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sensors-detect @ 5588

Revision 5588, 150.4 KB (checked in by khali, 4 years ago)
Improve the format of /etc/sysconfig/lm_sensors as generated by sensors-detect. The new format is more flexible and less error-prone. The old format is still included for compatibility.
Property svn:eol-style set to `native` Property svn:executable set to ``* Property svn:keywords set to `Author Date Id Revision`

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1	#!/usr/bin/perl -w
2	#
3	# sensors-detect - Detect hardware monitoring chips
4	# Copyright (C) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>
5	# Copyright (C) 2004 - 2008 Jean Delvare <khali@linux-fr.org>
6	#
7	# This program is free software; you can redistribute it and/or modify
8	# it under the terms of the GNU General Public License as published by
9	# the Free Software Foundation; either version 2 of the License, or
10	# (at your option) any later version.
11	#
12	# This program is distributed in the hope that it will be useful,
13	# but WITHOUT ANY WARRANTY; without even the implied warranty of
14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	# GNU General Public License for more details.
16	#
17	# You should have received a copy of the GNU General Public License
18	# along with this program; if not, write to the Free Software
19	# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
20	# MA 02110-1301 USA.
21	#
22
23	require 5.004;
24
25	use strict;
26	use Fcntl;
27	use POSIX;
28	use File::Basename;
29
30	# We will call modprobe, which typically lives in either /sbin,
31	# /usr/sbin or /usr/local/bin. So make sure these are all in the PATH.
32	foreach ('/usr/sbin', '/usr/local/sbin', '/sbin') {
33	$ENV{PATH} = "$_:".$ENV{PATH}
34	unless $ENV{PATH} =~ m/(^\|:)$_\/?(:\|$)/;
35	}
36
37	#########################
38	# CONSTANT DECLARATIONS #
39	#########################
40
41	use constant NO_CACHE => 1;
42	use vars qw(@pci_adapters @chip_ids @ipmi_ifs @non_hwmon_chip_ids
43	$i2c_addresses_to_scan $revision @i2c_byte_cache);
44
45	$revision = '$Revision$ ($Date$)';
46	$revision =~ s/\$\w+: (.*?) \$/$1/g;
47	$revision =~ s/ $[^()]*$//;
48
49	# This is the list of SMBus or I2C adapters we recognize by their PCI
50	# signature. This is an easy and fast way to determine which SMBus or I2C
51	# adapters should be present.
52	# Each entry must have a vendid (Vendor ID), devid (Device ID) and
53	# procid (Device name) and driver (Device driver).
54	@pci_adapters = (
55	{
56	vendid => 0x8086,
57	devid => 0x7113,
58	procid => "Intel 82371AB PIIX4 ACPI",
59	driver => "i2c-piix4",
60	}, {
61	vendid => 0x8086,
62	devid => 0x7603,
63	procid => "Intel 82372FB PIIX5 ACPI",
64	driver => "to-be-tested",
65	}, {
66	vendid => 0x8086,
67	devid => 0x719b,
68	procid => "Intel 82443MX Mobile",
69	driver => "i2c-piix4",
70	}, {
71	vendid => 0x8086,
72	devid => 0x2413,
73	procid => "Intel 82801AA ICH",
74	driver => "i2c-i801",
75	}, {
76	vendid => 0x8086,
77	devid => 0x2423,
78	procid => "Intel 82801AB ICH0",
79	driver => "i2c-i801",
80	}, {
81	vendid => 0x8086,
82	devid => 0x2443,
83	procid => "Intel 82801BA ICH2",
84	driver => "i2c-i801",
85	}, {
86	vendid => 0x8086,
87	devid => 0x2483,
88	procid => "Intel 82801CA/CAM ICH3",
89	driver => "i2c-i801",
90	}, {
91	vendid => 0x8086,
92	devid => 0x24C3,
93	procid => "Intel 82801DB ICH4",
94	driver => "i2c-i801",
95	}, {
96	vendid => 0x8086,
97	devid => 0x24D3,
98	procid => "Intel 82801EB ICH5",
99	driver => "i2c-i801",
100	}, {
101	vendid => 0x8086,
102	devid => 0x25A4,
103	procid => "Intel 6300ESB",
104	driver => "i2c-i801",
105	}, {
106	vendid => 0x8086,
107	devid => 0x269B,
108	procid => "Intel Enterprise Southbridge - ESB2",
109	driver => "i2c-i801",
110	}, {
111	vendid => 0x8086,
112	devid => 0x266A,
113	procid => "Intel 82801FB ICH6",
114	driver => "i2c-i801",
115	}, {
116	vendid => 0x8086,
117	devid => 0x27DA,
118	procid => "Intel 82801G ICH7",
119	driver => "i2c-i801",
120	}, {
121	vendid => 0x8086,
122	devid => 0x283E,
123	procid => "Intel 82801H ICH8",
124	driver => "i2c-i801",
125	}, {
126	vendid => 0x8086,
127	devid => 0x2930,
128	procid => "Intel ICH9",
129	driver => "i2c-i801",
130	}, {
131	vendid => 0x8086,
132	devid => 0x5032,
133	procid => "Intel Tolapai",
134	driver => "i2c-i801",
135	}, {
136	vendid => 0x8086,
137	devid => 0x3A30,
138	procid => "Intel ICH10",
139	driver => "i2c-i801",
140	}, {
141	vendid => 0x8086,
142	devid => 0x3A60,
143	procid => "Intel ICH10",
144	driver => "i2c-i801",
145	}, {
146	vendid => 0x8086,
147	devid => 0x8119,
148	procid => "Intel SCH",
149	driver => "i2c-isch",
150	}, {
151	vendid => 0x1106,
152	devid => 0x3040,
153	procid => "VIA Technologies VT82C586B Apollo ACPI",
154	driver => "i2c-via",
155	}, {
156	vendid => 0x1106,
157	devid => 0x3050,
158	procid => "VIA Technologies VT82C596 Apollo ACPI",
159	driver => "i2c-viapro",
160	}, {
161	vendid => 0x1106,
162	devid => 0x3051,
163	procid => "VIA Technologies VT82C596B ACPI",
164	driver => "i2c-viapro",
165	}, {
166	vendid => 0x1106,
167	devid => 0x3057,
168	procid => "VIA Technologies VT82C686 Apollo ACPI",
169	driver => "i2c-viapro",
170	}, {
171	vendid => 0x1106,
172	devid => 0x3074,
173	procid => "VIA Technologies VT8233 VLink South Bridge",
174	driver => "i2c-viapro",
175	}, {
176	vendid => 0x1106,
177	devid => 0x3147,
178	procid => "VIA Technologies VT8233A South Bridge",
179	driver => "i2c-viapro",
180	}, {
181	vendid => 0x1106,
182	devid => 0x3177,
183	procid => "VIA Technologies VT8233A/8235 South Bridge",
184	driver => "i2c-viapro",
185	}, {
186	vendid => 0x1106,
187	devid => 0x3227,
188	procid => "VIA Technologies VT8237 South Bridge",
189	driver => "i2c-viapro",
190	}, {
191	vendid => 0x1106,
192	devid => 0x3337,
193	procid => "VIA Technologies VT8237A South Bridge",
194	driver => "i2c-viapro",
195	}, {
196	vendid => 0x1106,
197	devid => 0x8235,
198	procid => "VIA Technologies VT8231 South Bridge",
199	driver => "i2c-viapro",
200	}, {
201	vendid => 0x1106,
202	devid => 0x3287,
203	procid => "VIA Technologies VT8251 South Bridge",
204	driver => "i2c-viapro",
205	}, {
206	vendid => 0x1106,
207	devid => 0x8324,
208	procid => "VIA Technologies CX700 South Bridge",
209	driver => "i2c-viapro",
210	}, {
211	vendid => 0x1106,
212	devid => 0x8353,
213	procid => "VIA Technologies VX800/VX820 South Bridge",
214	driver => "i2c-viapro",
215	}, {
216	vendid => 0x1039,
217	devid => 0x0008,
218	procid => "Silicon Integrated Systems SIS5595",
219	driver => "i2c-sis5595",
220	}, {
221	vendid => 0x1039,
222	devid => 0x0630,
223	procid => "Silicon Integrated Systems SIS630",
224	driver => "i2c-sis630",
225	}, {
226	vendid => 0x1039,
227	devid => 0x0730,
228	procid => "Silicon Integrated Systems SIS730",
229	driver => "i2c-sis630",
230	}, {
231	vendid => 0x1039,
232	devid => 0x0016,
233	procid => "Silicon Integrated Systems SMBus Controller",
234	driver => "i2c-sis96x",
235	}, {
236	# Both Ali chips below have same PCI ID. Can't be helped. Only one should load.
237	vendid => 0x10b9,
238	devid => 0x7101,
239	procid => "Acer Labs 1533/1543",
240	driver => "i2c-ali15x3",
241	}, {
242	vendid => 0x10b9,
243	devid => 0x7101,
244	procid => "Acer Labs 1535",
245	driver => "i2c-ali1535",
246	}, {
247	vendid => 0x10b9,
248	devid => 0x1563,
249	procid => "Acer Labs 1563",
250	driver => "i2c-ali1563",
251	}, {
252	vendid => 0x1022,
253	devid => 0x740b,
254	procid => "AMD-756 Athlon ACPI",
255	driver => "i2c-amd756",
256	}, {
257	vendid => 0x1022,
258	devid => 0x7413,
259	procid => "AMD-766 Athlon ACPI",
260	driver => "i2c-amd756",
261	}, {
262	vendid => 0x1022,
263	devid => 0x7443,
264	procid => "AMD-768 System Management",
265	driver => "i2c-amd756",
266	}, {
267	vendid => 0x1022,
268	devid => 0x746b,
269	procid => "AMD-8111 ACPI",
270	driver => "i2c-amd756",
271	}, {
272	vendid => 0x1022,
273	devid => 0x746a,
274	procid => "AMD-8111 SMBus 2.0",
275	driver => "i2c-amd8111",
276	}, {
277	vendid => 0x10de,
278	devid => 0x01b4,
279	procid => "nVidia nForce SMBus",
280	driver => "i2c-amd756",
281	}, {
282	vendid => 0x10de,
283	devid => 0x0064,
284	procid => "nVidia Corporation nForce2 SMBus (MCP)",
285	driver => "i2c-nforce2",
286	}, {
287	vendid => 0x10de,
288	devid => 0x0084,
289	procid => "nVidia Corporation nForce2 Ultra 400 SMBus (MCP)",
290	driver => "i2c-nforce2",
291	}, {
292	vendid => 0x10de,
293	devid => 0x00D4,
294	procid => "nVidia Corporation nForce3 Pro150 SMBus (MCP)",
295	driver => "i2c-nforce2",
296	}, {
297	vendid => 0x10de,
298	devid => 0x00E4,
299	procid => "nVidia Corporation nForce3 250Gb SMBus (MCP)",
300	driver => "i2c-nforce2",
301	}, {
302	vendid => 0x10de,
303	devid => 0x0052,
304	procid => "nVidia Corporation nForce4 SMBus (MCP)",
305	driver => "i2c-nforce2",
306	}, {
307	vendid => 0x10de,
308	devid => 0x0034,
309	procid => "nVidia Corporation nForce4 SMBus (MCP-04)",
310	driver => "i2c-nforce2",
311	}, {
312	vendid => 0x10de,
313	devid => 0x0264,
314	procid => "nVidia Corporation nForce4 SMBus (MCP51)",
315	driver => "i2c-nforce2",
316	}, {
317	vendid => 0x10de,
318	devid => 0x0368,
319	procid => "nVidia Corporation nForce4 SMBus (MCP55)",
320	driver => "i2c-nforce2",
321	}, {
322	vendid => 0x10de,
323	devid => 0x03eb,
324	procid => "nVidia Corporation nForce4 SMBus (MCP61)",
325	driver => "i2c-nforce2",
326	}, {
327	vendid => 0x10de,
328	devid => 0x0446,
329	procid => "nVidia Corporation nForce4 SMBus (MCP65)",
330	driver => "i2c-nforce2",
331	}, {
332	vendid => 0x1166,
333	devid => 0x0200,
334	procid => "ServerWorks OSB4 South Bridge",
335	driver => "i2c-piix4",
336	}, {
337	vendid => 0x1055,
338	devid => 0x9463,
339	procid => "SMSC Victory66 South Bridge",
340	driver => "i2c-piix4",
341	}, {
342	vendid => 0x1166,
343	devid => 0x0201,
344	procid => "ServerWorks CSB5 South Bridge",
345	driver => "i2c-piix4",
346	}, {
347	vendid => 0x1166,
348	devid => 0x0203,
349	procid => "ServerWorks CSB6 South Bridge",
350	driver => "i2c-piix4",
351	}, {
352	vendid => 0x1166,
353	devid => 0x0205,
354	procid => "ServerWorks HT-1000 South Bridge",
355	driver => "i2c-piix4",
356	}, {
357	vendid => 0x1002,
358	devid => 0x4353,
359	procid => "ATI Technologies Inc ATI SMBus",
360	driver => "i2c-piix4",
361	}, {
362	vendid => 0x1002,
363	devid => 0x4363,
364	procid => "ATI Technologies Inc ATI SMBus",
365	driver => "i2c-piix4",
366	}, {
367	vendid => 0x1002,
368	devid => 0x4372,
369	procid => "ATI Technologies Inc IXP SB400 SMBus Controller",
370	driver => "i2c-piix4",
371	}, {
372	vendid => 0x1002,
373	devid => 0x4385,
374	procid => "ATI Technologies Inc SB600 SMBus",
375	driver => "i2c-piix4",
376	}, {
377	vendid => 0x100B,
378	devid => 0x0500,
379	procid => "SCx200 Bridge",
380	driver => "scx200_acb",
381	}, {
382	vendid => 0x100B,
383	devid => 0x0510,
384	procid => "SC1100 Bridge",
385	driver => "scx200_acb",
386	}, {
387	vendid => 0x100B,
388	devid => 0x002B,
389	procid => "CS5535 ISA bridge",
390	driver => "scx200_acb",
391	}, {
392	vendid => 0x1022,
393	devid => 0x2090,
394	procid => "CS5536 [Geode companion] ISA",
395	driver => "scx200_acb",
396	}
397	);
398
399	# Look-up table to find out an I2C bus' driver based on the bus name.
400	# The match field should contain a regular expression matching the I2C
401	# bus name as it would appear in /sys/class/i2c-adapter.
402	# Note that new drivers probably don't need to be added to this table
403	# if they bind to their device, as we will be able to get the driver name
404	# from sysfs directly.
405	use vars qw(@i2c_adapter_names);
406	@i2c_adapter_names = (
407	{ driver => "i2c-piix4", match => qr/^SMBus PIIX4 adapter at / },
408	{ driver => "i2c-i801", match => qr/^SMBus I801 adapter at / },
409	{ driver => "i2c-via", match => qr/^VIA i2c/ },
410	{ driver => "i2c-viapro", match => qr/^SMBus V(IA\|ia) Pro adapter at / },
411	{ driver => "i2c-sis5595", match => qr/^SMBus SIS5595 adapter at / },
412	{ driver => "i2c-sis630", match => qr/^SMBus SIS630 adapter at / },
413	{ driver => "i2c-sis96x", match => qr/^SiS96x SMBus adapter at / },
414	{ driver => "i2c-ali15x3", match => qr/^SMBus ALI15X3 adapter at / },
415	{ driver => "i2c-ali1535", match => qr/^SMBus ALI1535 adapter at/ },
416	{ driver => "i2c-ali1563", match => qr/^SMBus ALi 1563 Adapter @ / },
417	{ driver => "i2c-amd756", match => qr/^SMBus (AMD756\|AMD766\|AMD768\|AMD8111\|nVidia nForce) adapter at / },
418	{ driver => "i2c-amd8111", match => qr/^SMBus2 AMD8111 adapter at / },
419	{ driver => "i2c-nforce2", match => qr/^SMBus nForce2 adapter at / },
420	{ driver => "scx200_acb", match => qr/^(NatSemi SCx200 ACCESS\.bus\|SCx200 ACB\d+\|CS553[56] ACB\d+)/ },
421	);
422
423	# This is a list of all recognized I2C and ISA chips.
424	# Each entry must have the following fields:
425	# name: The full chip name
426	# driver: The driver name. Put in exactly:
427	# * "to-be-written" if it is not yet available
428	# * "use-isa-instead" if no i2c driver will be written
429	# i2c_addrs (optional): For I2C chips, the list of I2C addresses to
430	# probe.
431	# i2c_detect (optional): For I2C chips, the function to call to detect
432	# this chip. The function will be passed two parameters: an open file
433	# descriptor to access the bus, and the I2C address to probe.
434	# isa_addrs (optional): For ISA chips, the list of port addresses to
435	# probe.
436	# isa_detect (optional): For ISA chips, the function to call to detect
437	# this chip. The function will be passed one parameter: the ISA address
438	# to probe.
439	# alias_detect (optional): For chips which can be both on the ISA and the
440	# I2C bus, a function which detects whether two entries are the same.
441	# The function will be passed three parameters: the ISA address, an
442	# open file descriptor to access the I2C bus, and the I2C address.
443	@chip_ids = (
444	{
445	name => "Myson MTP008",
446	driver => "mtp008",
447	i2c_addrs => [0x2c..0x2e],
448	i2c_detect => sub { mtp008_detect(@_); },
449	}, {
450	name => "National Semiconductor LM78",
451	driver => "lm78",
452	i2c_addrs => [0x28..0x2f],
453	i2c_detect => sub { lm78_detect(@_, 0); },
454	isa_addrs => [0x290],
455	isa_detect => sub { lm78_isa_detect(@_, 0); },
456	alias_detect => sub { winbond_alias_detect(@_, 0x2b, 0x3d); },
457	}, {
458	name => "National Semiconductor LM79",
459	driver => "lm78",
460	i2c_addrs => [0x28..0x2f],
461	i2c_detect => sub { lm78_detect(@_, 2); },
462	isa_addrs => [0x290],
463	isa_detect => sub { lm78_isa_detect(@_, 2); },
464	alias_detect => sub { winbond_alias_detect(@_, 0x2b, 0x3d); },
465	}, {
466	name => "National Semiconductor LM75",
467	driver => "lm75",
468	i2c_addrs => [0x48..0x4f],
469	i2c_detect => sub { lm75_detect(@_, 0); },
470	}, {
471	name => "Dallas Semiconductor DS75",
472	driver => "lm75",
473	i2c_addrs => [0x48..0x4f],
474	i2c_detect => sub { lm75_detect(@_, 1); },
475	}, {
476	name => "National Semiconductor LM77",
477	driver => "lm77",
478	i2c_addrs => [0x48..0x4b],
479	i2c_detect => sub { lm77_detect(@_); },
480	}, {
481	name => "National Semiconductor LM80",
482	driver => "lm80",
483	i2c_addrs => [0x28..0x2f],
484	i2c_detect => sub { lm80_detect(@_); },
485	}, {
486	name => "National Semiconductor LM85",
487	driver => "lm85",
488	i2c_addrs => [0x2c..0x2e],
489	i2c_detect => sub { lm85_detect(@_, 0); },
490	}, {
491	name => "National Semiconductor LM96000 or PC8374L",
492	driver => "lm85",
493	i2c_addrs => [0x2c..0x2e],
494	i2c_detect => sub { lm85_detect(@_, 1); },
495	}, {
496	name => "Analog Devices ADM1027",
497	driver => "lm85",
498	i2c_addrs => [0x2c..0x2e],
499	i2c_detect => sub { lm85_detect(@_, 2); },
500	}, {
501	name => "Analog Devices ADT7460 or ADT7463",
502	driver => "lm85",
503	i2c_addrs => [0x2c..0x2e],
504	i2c_detect => sub { lm85_detect(@_, 3); },
505	}, {
506	name => "SMSC EMC6D100 or EMC6D101",
507	driver => "lm85",
508	i2c_addrs => [0x2c..0x2e],
509	i2c_detect => sub { lm85_detect(@_, 4); },
510	}, {
511	name => "SMSC EMC6D102",
512	driver => "lm85",
513	i2c_addrs => [0x2c..0x2e],
514	i2c_detect => sub { lm85_detect(@_, 5); },
515	}, {
516	name => "SMSC EMC6D103",
517	driver => "lm85",
518	i2c_addrs => [0x2c..0x2e],
519	i2c_detect => sub { lm85_detect(@_, 6); },
520	}, {
521	name => "Analog Devices ADT7462",
522	driver => "adt7462",
523	i2c_addrs => [0x5c, 0x58],
524	i2c_detect => sub { adt7467_detect(@_, 2); },
525	}, {
526	name => "Analog Devices ADT7466",
527	driver => "to-be-written",
528	i2c_addrs => [0x4c],
529	i2c_detect => sub { adt7467_detect(@_, 3); },
530	}, {
531	name => "Analog Devices ADT7467 or ADT7468",
532	driver => "to-be-written",
533	i2c_addrs => [0x2e],
534	i2c_detect => sub { adt7467_detect(@_, 0); },
535	}, {
536	name => "Analog Devices ADT7470",
537	driver => "adt7470",
538	i2c_addrs => [0x2c, 0x2e, 0x2f],
539	i2c_detect => sub { adt7467_detect(@_, 4); },
540	}, {
541	name => "Analog Devices ADT7473",
542	driver => "adt7473",
543	i2c_addrs => [0x2e],
544	i2c_detect => sub { adt7473_detect(@_, 0); },
545	}, {
546	name => "Analog Devices ADT7475",
547	driver => "to-be-written",
548	i2c_addrs => [0x2e],
549	i2c_detect => sub { adt7473_detect(@_, 1); },
550	}, {
551	name => "Analog Devices ADT7476",
552	driver => "to-be-written",
553	i2c_addrs => [0x2c..0x2e],
554	i2c_detect => sub { adt7467_detect(@_, 1); },
555	}, {
556	name => "Andigilog aSC7511",
557	driver => "to-be-written",
558	i2c_addrs => [0x4c],
559	i2c_detect => sub { andigilog_aSC7511_detect(@_); },
560	}, {
561	name => "Andigilog aSC7512",
562	driver => "to-be-written",
563	i2c_addrs => [0x58],
564	i2c_detect => sub { andigilog_detect(@_, 0); },
565	}, {
566	name => "Andigilog aSC7611",
567	driver => "to-be-written",
568	i2c_addrs => [0x2c..0x2e],
569	i2c_detect => sub { andigilog_detect(@_, 1); },
570	}, {
571	name => "Andigilog aSC7621",
572	driver => "to-be-written",
573	i2c_addrs => [0x2c..0x2e],
574	i2c_detect => sub { andigilog_detect(@_, 2); },
575	}, {
576	name => "National Semiconductor LM87",
577	driver => "lm87",
578	i2c_addrs => [0x2c..0x2e],
579	i2c_detect => sub { lm87_detect(@_, 0); },
580	}, {
581	name => "Analog Devices ADM1024",
582	driver => "lm87",
583	i2c_addrs => [0x2c..0x2e],
584	i2c_detect => sub { lm87_detect(@_, 1); },
585	}, {
586	name => "National Semiconductor LM93",
587	driver => "lm93",
588	i2c_addrs => [0x2c..0x2e],
589	i2c_detect => sub { lm93_detect(@_); },
590	}, {
591	name => "Winbond W83781D",
592	driver => "w83781d",
593	i2c_addrs => [0x28..0x2f],
594	i2c_detect => sub { w83781d_detect(@_, 0); },
595	isa_addrs => [0x290],
596	isa_detect => sub { w83781d_isa_detect(@_, 0); },
597	alias_detect => sub { winbond_alias_detect(@_, 0x2b, 0x3d); },
598	}, {
599	name => "Winbond W83782D",
600	driver => "w83781d",
601	i2c_addrs => [0x28..0x2f],
602	i2c_detect => sub { w83781d_detect(@_, 1); },
603	isa_addrs => [0x290],
604	isa_detect => sub { w83781d_isa_detect(@_, 1); },
605	alias_detect => sub { winbond_alias_detect(@_, 0x2b, 0x3d); },
606	}, {
607	name => "Winbond W83783S",
608	driver => "w83781d",
609	i2c_addrs => [0x2d],
610	i2c_detect => sub { w83781d_detect(@_, 2); },
611	}, {
612	name => "Winbond W83791D",
613	driver => "w83791d",
614	i2c_addrs => [0x2c..0x2f],
615	i2c_detect => sub { w83781d_detect(@_, 7); },
616	}, {
617	name => "Winbond W83792D",
618	driver => "w83792d",
619	i2c_addrs => [0x2c..0x2f],
620	i2c_detect => sub { w83781d_detect(@_, 8); },
621	}, {
622	name => "Winbond W83793R/G",
623	driver => "w83793",
624	i2c_addrs => [0x2c..0x2f],
625	i2c_detect => sub { w83793_detect(@_); },
626	}, {
627	name => "Winbond W83627HF",
628	driver => "use-isa-instead",
629	i2c_addrs => [0x28..0x2f],
630	i2c_detect => sub { w83781d_detect(@_, 3); },
631	}, {
632	name => "Winbond W83627EHF",
633	driver => "use-isa-instead",
634	i2c_addrs => [0x28..0x2f],
635	i2c_detect => sub { w83781d_detect(@_, 9); },
636	}, {
637	name => "Winbond W83627DHG",
638	driver => "use-isa-instead",
639	i2c_addrs => [0x28..0x2f],
640	i2c_detect => sub { w83781d_detect(@_, 10); },
641	}, {
642	name => "Asus AS99127F (rev.1)",
643	driver => "w83781d",
644	i2c_addrs => [0x28..0x2f],
645	i2c_detect => sub { w83781d_detect(@_, 4); },
646	}, {
647	name => "Asus AS99127F (rev.2)",
648	driver => "w83781d",
649	i2c_addrs => [0x28..0x2f],
650	i2c_detect => sub { w83781d_detect(@_, 5); },
651	}, {
652	name => "Asus ASB100 Bach",
653	driver => "asb100",
654	i2c_addrs => [0x28..0x2f],
655	i2c_detect => sub { w83781d_detect(@_, 6); },
656	}, {
657	name => "Asus Mozart-2",
658	driver => "to-be-written",
659	i2c_addrs => [0x77],
660	i2c_detect => sub { mozart_detect(@_); },
661	}, {
662	name => "Winbond W83L784R/AR/G",
663	driver => "to-be-written",
664	i2c_addrs => [0x2d],
665	i2c_detect => sub { w83l784r_detect(@_, 0); },
666	}, {
667	name => "Winbond W83L785R/G",
668	driver => "to-be-written",
669	i2c_addrs => [0x2d],
670	i2c_detect => sub { w83l784r_detect(@_, 1); },
671	}, {
672	name => "Winbond W83L786NR/NG/R/G",
673	driver => "w83l786ng",
674	i2c_addrs => [0x2e, 0x2f],
675	i2c_detect => sub { w83l784r_detect(@_, 2); },
676	}, {
677	name => "Winbond W83L785TS-S",
678	driver => "w83l785ts",
679	i2c_addrs => [0x2e],
680	i2c_detect => sub { w83l784r_detect(@_, 3); },
681	}, {
682	name => "Genesys Logic GL518SM",
683	driver => "gl518sm",
684	i2c_addrs => [0x2c, 0x2d],
685	i2c_detect => sub { gl518sm_detect(@_, 0); },
686	}, {
687	name => "Genesys Logic GL520SM",
688	driver => "gl520sm",
689	i2c_addrs => [0x2c, 0x2d],
690	i2c_detect => sub { gl518sm_detect(@_, 1); },
691	}, {
692	name => "Genesys Logic GL525SM",
693	driver => "to-be-written",
694	i2c_addrs => [0x2d],
695	i2c_detect => sub { gl525sm_detect(@_); },
696	}, {
697	name => "Analog Devices ADM9240",
698	driver => "adm9240",
699	i2c_addrs => [0x2c..0x2f],
700	i2c_detect => sub { adm9240_detect(@_, 0); },
701	}, {
702	name => "Dallas Semiconductor DS1621/DS1631",
703	driver => "ds1621",
704	i2c_addrs => [0x48..0x4f],
705	i2c_detect => sub { ds1621_detect(@_); },
706	}, {
707	name => "Dallas Semiconductor DS1780",
708	driver => "adm9240",
709	i2c_addrs => [0x2c..0x2f],
710	i2c_detect => sub { adm9240_detect(@_, 1); },
711	}, {
712	name => "National Semiconductor LM81",
713	driver => "adm9240",
714	i2c_addrs => [0x2c..0x2f],
715	i2c_detect => sub { adm9240_detect(@_, 2); },
716	}, {
717	name => "Analog Devices ADM1026",
718	driver => "adm1026",
719	i2c_addrs => [0x2c..0x2e],
720	i2c_detect => sub { adm1026_detect(@_); },
721	}, {
722	name => "Analog Devices ADM1025",
723	driver => "adm1025",
724	i2c_addrs => [0x2c..0x2e],
725	i2c_detect => sub { adm1025_detect(@_, 0); },
726	}, {
727	name => "Philips NE1619",
728	driver => "adm1025",
729	i2c_addrs => [0x2c..0x2d],
730	i2c_detect => sub { adm1025_detect(@_, 1); },
731	}, {
732	name => "Analog Devices ADM1021",
733	driver => "adm1021",
734	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
735	i2c_detect => sub { adm1021_detect(@_, 0); },
736	}, {
737	name => "Analog Devices ADM1021A/ADM1023",
738	driver => "adm1021",
739	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
740	i2c_detect => sub { adm1021_detect(@_, 1); },
741	}, {
742	name => "Maxim MAX1617",
743	driver => "adm1021",
744	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
745	i2c_detect => sub { adm1021_detect(@_, 2); },
746	}, {
747	name => "Maxim MAX1617A",
748	driver => "adm1021",
749	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
750	i2c_detect => sub { adm1021_detect(@_, 3); },
751	}, {
752	name => "Maxim MAX1668",
753	driver => "max1668",
754	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
755	i2c_detect => sub { max1668_detect(@_, 0); },
756	}, {
757	name => "Maxim MAX1805",
758	driver => "max1668",
759	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
760	i2c_detect => sub { max1668_detect(@_, 1); },
761	}, {
762	name => "Maxim MAX1989",
763	driver => "max1668",
764	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
765	i2c_detect => sub { max1668_detect(@_, 2); },
766	}, {
767	name => "Maxim MAX6650/MAX6651",
768	driver => "max6650",
769	i2c_addrs => [0x1b, 0x1f, 0x48, 0x4b],
770	i2c_detect => sub { max6650_detect(@_); },
771	}, {
772	name => "Maxim MAX6655/MAX6656",
773	driver => "max6655",
774	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
775	i2c_detect => sub { max6655_detect(@_); },
776	}, {
777	name => "TI THMC10",
778	driver => "adm1021",
779	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
780	i2c_detect => sub { adm1021_detect(@_, 4); },
781	}, {
782	name => "National Semiconductor LM84",
783	driver => "adm1021",
784	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
785	i2c_detect => sub { adm1021_detect(@_, 5); },
786	}, {
787	name => "Genesys Logic GL523SM",
788	driver => "adm1021",
789	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
790	i2c_detect => sub { adm1021_detect(@_, 6); },
791	}, {
792	name => "Onsemi MC1066",
793	driver => "adm1021",
794	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
795	i2c_detect => sub { adm1021_detect(@_, 7); },
796	}, {
797	name => "Maxim MAX1618",
798	driver => "max1619",
799	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
800	i2c_detect => sub { max1619_detect(@_, 1); },
801	}, {
802	name => "Maxim MAX1619",
803	driver => "max1619",
804	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
805	i2c_detect => sub { max1619_detect(@_, 0); },
806	}, {
807	name => "National Semiconductor LM82/LM83",
808	driver => "lm83",
809	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
810	i2c_detect => sub { lm83_detect(@_); },
811	}, {
812	name => "National Semiconductor LM90",
813	driver => "lm90",
814	i2c_addrs => [0x4c],
815	i2c_detect => sub { lm90_detect(@_, 0); },
816	}, {
817	name => "National Semiconductor LM89/LM99",
818	driver => "lm90",
819	i2c_addrs => [0x4c..0x4d],
820	i2c_detect => sub { lm90_detect(@_, 1); },
821	}, {
822	name => "National Semiconductor LM86",
823	driver => "lm90",
824	i2c_addrs => [0x4c],
825	i2c_detect => sub { lm90_detect(@_, 2); },
826	}, {
827	name => "Analog Devices ADM1032",
828	driver => "lm90",
829	i2c_addrs => [0x4c..0x4d],
830	i2c_detect => sub { lm90_detect(@_, 3); },
831	}, {
832	name => "Maxim MAX6654/MAX6690",
833	driver => "to-be-written", # probably lm90
834	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
835	i2c_detect => sub { lm90_detect(@_, 4); },
836	}, {
837	name => "Maxim MAX6657/MAX6658/MAX6659",
838	driver => "lm90",
839	i2c_addrs => [0x4c],
840	i2c_detect => sub { max6657_detect(@_); },
841	}, {
842	name => "Maxim MAX6659",
843	driver => "lm90",
844	i2c_addrs => [0x4d..0x4e], # 0x4c is handled above
845	i2c_detect => sub { max6657_detect(@_); },
846	}, {
847	name => "Maxim MAX6646",
848	driver => "lm90",
849	i2c_addrs => [0x4d],
850	i2c_detect => sub { lm90_detect(@_, 6); },
851	}, {
852	name => "Maxim MAX6647",
853	driver => "lm90",
854	i2c_addrs => [0x4e],
855	i2c_detect => sub { lm90_detect(@_, 6); },
856	}, {
857	name => "Maxim MAX6648/MAX6649/MAX6692",
858	driver => "lm90",
859	i2c_addrs => [0x4c],
860	i2c_detect => sub { lm90_detect(@_, 6); },
861	}, {
862	name => "Maxim MAX6680/MAX6681",
863	driver => "lm90",
864	i2c_addrs => [0x18..0x1a, 0x29..0x2b, 0x4c..0x4e],
865	i2c_detect => sub { lm90_detect(@_, 7); },
866	}, {
867	name => "Winbond W83L771W/G",
868	driver => "lm90",
869	i2c_addrs => [0x4c],
870	i2c_detect => sub { lm90_detect(@_, 8); },
871	}, {
872	name => "Texas Instruments TMP401",
873	driver => "tmp401",
874	i2c_addrs => [0x4c],
875	i2c_detect => sub { lm90_detect(@_, 9); },
876	}, {
877	name => "Texas Instruments TMP411",
878	driver => "to-be-written",
879	i2c_addrs => [0x4c..0x4e],
880	i2c_detect => sub { lm90_detect(@_, 10); },
881	}, {
882	name => "National Semiconductor LM95231",
883	driver => "to-be-written",
884	i2c_addrs => [0x2b, 0x19, 0x2a],
885	i2c_detect => sub { lm95231_detect(@_); },
886	}, {
887	name => "National Semiconductor LM63",
888	driver => "lm63",
889	i2c_addrs => [0x4c],
890	i2c_detect => sub { lm63_detect(@_, 1); },
891	}, {
892	name => "National Semiconductor LM64",
893	driver => "to-be-written", # lm63
894	i2c_addrs => [0x18, 0x4e],
895	i2c_detect => sub { lm63_detect(@_, 3); },
896	}, {
897	name => "Fintek F75363SG",
898	driver => "lm63", # Not yet
899	i2c_addrs => [0x4c],
900	i2c_detect => sub { lm63_detect(@_, 2); },
901	}, {
902	name => "National Semiconductor LM92",
903	driver => "lm92",
904	i2c_addrs => [0x48..0x4b],
905	i2c_detect => sub { lm92_detect(@_, 0); },
906	}, {
907	name => "National Semiconductor LM76",
908	driver => "lm92",
909	i2c_addrs => [0x48..0x4b],
910	i2c_detect => sub { lm92_detect(@_, 1); },
911	}, {
912	name => "Maxim MAX6633/MAX6634/MAX6635",
913	driver => "lm92",
914	i2c_addrs => [0x48..0x4f], # The MAX6633 can also use 0x40-0x47 but we
915	# don't want to probe these addresses, it's
916	# dangerous.
917	i2c_detect => sub { lm92_detect(@_, 2); },
918	}, {
919	name => "Analog Devices ADT7461",
920	driver => "lm90",
921	i2c_addrs => [0x4c..0x4d],
922	i2c_detect => sub { lm90_detect(@_, 5); },
923	}, {
924	name => "Analog Devices ADT7481",
925	driver => "to-be-written",
926	i2c_addrs => [0x4c, 0x4b],
927	i2c_detect => sub { adt7481_detect(@_); },
928	}, {
929	name => "Analog Devices ADM1029",
930	driver => "adm1029",
931	i2c_addrs => [0x28..0x2f],
932	i2c_detect => sub { adm1029_detect(@_); },
933	}, {
934	name => "Analog Devices ADM1030",
935	driver => "adm1031",
936	i2c_addrs => [0x2c..0x2e],
937	i2c_detect => sub { adm1031_detect(@_, 0); },
938	}, {
939	name => "Analog Devices ADM1031",
940	driver => "adm1031",
941	i2c_addrs => [0x2c..0x2e],
942	i2c_detect => sub { adm1031_detect(@_, 1); },
943	}, {
944	name => "Analog Devices ADM1033",
945	driver => "to-be-written",
946	i2c_addrs => [0x50..0x53],
947	i2c_detect => sub { adm1034_detect(@_, 0); },
948	}, {
949	name => "Analog Devices ADM1034",
950	driver => "to-be-written",
951	i2c_addrs => [0x50..0x53],
952	i2c_detect => sub { adm1034_detect(@_, 1); },
953	}, {
954	name => "Analog Devices ADM1022",
955	driver => "thmc50",
956	i2c_addrs => [0x2c..0x2e],
957	i2c_detect => sub { adm1022_detect(@_, 0); },
958	}, {
959	name => "Texas Instruments THMC50",
960	driver => "thmc50",
961	i2c_addrs => [0x2c..0x2e],
962	i2c_detect => sub { adm1022_detect(@_, 1); },
963	}, {
964	name => "Analog Devices ADM1028",
965	driver => "thmc50",
966	i2c_addrs => [0x2e],
967	i2c_detect => sub { adm1022_detect(@_, 2); },
968	}, {
969	name => "Texas Instruments THMC51",
970	driver => "to-be-written", # thmc50
971	i2c_addrs => [0x2e], # At least (no datasheet)
972	i2c_detect => sub { adm1022_detect(@_, 3); },
973	}, {
974	name => "VIA VT1211 (I2C)",
975	driver => "use-isa-instead",
976	i2c_addrs => [0x2d],
977	i2c_detect => sub { vt1211_i2c_detect(@_); },
978	}, {
979	name => "ITE IT8712F",
980	driver => "it87",
981	i2c_addrs => [0x28..0x2f],
982	i2c_detect => sub { it8712_i2c_detect(@_); },
983	}, {
984	name => "FSC Poseidon I",
985	driver => sub { kernel_version_at_least(2, 6, 24) ? "fschmd" : "fscpos" },
986	i2c_addrs => [0x73],
987	i2c_detect => sub { fsc_detect(@_, 0); },
988	}, {
989	name => "FSC Poseidon II",
990	driver => "to-be-written",
991	i2c_addrs => [0x73],
992	i2c_detect => sub { fsc_detect(@_, 1); },
993	}, {
994	name => "FSC Scylla",
995	driver => "fschmd",
996	i2c_addrs => [0x73],
997	i2c_detect => sub { fsc_detect(@_, 2); },
998	}, {
999	name => "FSC Hermes",
1000	driver => sub { kernel_version_at_least(2, 6, 24) ? "fschmd" : "fscher" },
1001	i2c_addrs => [0x73],
1002	i2c_detect => sub { fsc_detect(@_, 3); },
1003	}, {
1004	name => "FSC Heimdal",
1005	driver => "fschmd",
1006	i2c_addrs => [0x73],
1007	i2c_detect => sub { fsc_detect(@_, 4); },
1008	}, {
1009	name => "FSC Heracles",
1010	driver => "fschmd",
1011	i2c_addrs => [0x73],
1012	i2c_detect => sub { fsc_detect(@_, 5); },
1013	}, {
1014	name => "ALi M5879",
1015	driver => "to-be-written",
1016	i2c_addrs => [0x2c..0x2d],
1017	i2c_detect => sub { m5879_detect(@_); },
1018	}, {
1019	name => "SMSC LPC47M15x/192/292/997",
1020	driver => "smsc47m192",
1021	i2c_addrs => [0x2c..0x2d],
1022	i2c_detect => sub { smsc47m192_detect(@_); },
1023	}, {
1024	name => "SMSC DME1737",
1025	driver => "dme1737",
1026	i2c_addrs => [0x2c..0x2e],
1027	i2c_detect => sub { dme1737_detect(@_, 1); },
1028	}, {
1029	name => "SMSC SCH5027D-NW",
1030	driver => "dme1737",
1031	i2c_addrs => [0x2c..0x2e],
1032	i2c_detect => sub { dme1737_detect(@_, 2); },
1033	}, {
1034	name => "Fintek F75121R/F75122R/RG (VID+GPIO)",
1035	driver => "to-be-written",
1036	i2c_addrs => [0x4e], # 0x37 not probed
1037	i2c_detect => sub { fintek_detect(@_, 2); },
1038	}, {
1039	name => "Fintek F75373S/SG",
1040	driver => "f75375s",
1041	i2c_addrs => [0x2d..0x2e],
1042	i2c_detect => sub { fintek_detect(@_, 3); },
1043	}, {
1044	name => "Fintek F75375S/SP",
1045	driver => "f75375s",
1046	i2c_addrs => [0x2d..0x2e],
1047	i2c_detect => sub { fintek_detect(@_, 4); },
1048	}, {
1049	name => "Fintek F75387SG/RG",
1050	driver => "to-be-written",
1051	i2c_addrs => [0x2d..0x2e],
1052	i2c_detect => sub { fintek_detect(@_, 5); },
1053	}, {
1054	name => "Fintek F75383S/M",
1055	driver => "to-be-written",
1056	i2c_addrs => [0x4c],
1057	i2c_detect => sub { fintek_detect(@_, 6); },
1058	}, {
1059	name => "Fintek F75384S/M",
1060	driver => "to-be-written",
1061	i2c_addrs => [0x4d],
1062	i2c_detect => sub { fintek_detect(@_, 6); },
1063	}, {
1064	name => "Fintek custom power control IC",
1065	driver => "to-be-written",
1066	i2c_addrs => [0x2f],
1067	i2c_detect => sub { fintek_detect(@_, 7); },
1068	}, {
1069	name => "Smart Battery",
1070	driver => "sbs", # ACPI driver, not sure if it always works
1071	i2c_addrs => [0x0b],
1072	i2c_detect => sub { smartbatt_detect(@_); },
1073	}
1074	);
1075
1076	# IPMI interfaces have their own array now
1077	@ipmi_ifs = (
1078	{
1079	name => "IPMI BMC KCS",
1080	driver => "ipmisensors",
1081	isa_addrs => [0x0ca0],
1082	isa_detect => sub { ipmi_detect(@_); },
1083	}, {
1084	name => "IPMI BMC SMIC",
1085	driver => "ipmisensors",
1086	isa_addrs => [0x0ca8],
1087	isa_detect => sub { ipmi_detect(@_); },
1088	}
1089	);
1090
1091	# Here is a similar list, but for devices which are not hardware monitoring
1092	# chips. We only list popular devices which happen to live at the same I2C
1093	# address as recognized hardware monitoring chips. The idea is to make it
1094	# clear that the chip in question is of no interest for lm-sensors.
1095	@non_hwmon_chip_ids = (
1096	{
1097	name => "Winbond W83791SD",
1098	i2c_addrs => [0x2c..0x2f],
1099	i2c_detect => sub { w83791sd_detect(@_); },
1100	}, {
1101	name => "Fintek F75111R/RG/N (GPIO)",
1102	i2c_addrs => [0x37, 0x4e],
1103	i2c_detect => sub { fintek_detect(@_, 1); },
1104	}, {
1105	name => "ITE IT8201R/IT8203R/IT8206R/IT8266R",
1106	i2c_addrs => [0x4e],
1107	i2c_detect => sub { ite_overclock_detect(@_); },
1108	}, {
1109	name => "SPD EEPROM",
1110	i2c_addrs => [0x50..0x57],
1111	i2c_detect => sub { eeprom_detect(@_); },
1112	}, {
1113	name => "EDID EEPROM",
1114	i2c_addrs => [0x50],
1115	i2c_detect => sub { ddcmonitor_detect(@_); },
1116	}
1117	);
1118
1119	# This is a list of all recognized superio chips.
1120	# Each entry must have the following fields:
1121	# name: The full chip name
1122	# driver: The driver name. Put in exactly:
1123	# * "to-be-written" if it is not yet available
1124	# * "not-a-sensor" if the chip doesn't have hardware monitoring
1125	# capabilities (listing such chips here removes the need of manual
1126	# lookup when people report them)
1127	# * "via-smbus-only" if this is a Super-I/O chip whose hardware
1128	# monitoring registers can only be accessed via the SMBus
1129	# devid: The device ID we have to match (base device)
1130	# devid_mask (optional): Bitmask to apply before checking the device ID
1131	# logdev: The logical device containing the sensors
1132	# features (optional): Features supported by this device, amongst:
1133	# * FEAT_IN
1134	# * FEAT_FAN
1135	# * FEAT_TEMP
1136	use vars qw(@superio_ids_natsemi @superio_ids_smsc @superio_ids_smsc_ns
1137	@superio_ids_winbond @superio_ids_ite @superio_ids);
1138
1139	use constant FEAT_IN => (1 << 0);
1140	use constant FEAT_FAN => (1 << 1);
1141	use constant FEAT_TEMP => (1 << 2);
1142	use constant FEAT_SMBUS => (1 << 7);
1143
1144	@superio_ids_natsemi = (
1145	{
1146	name => "Nat. Semi. PC8374L Super IO Sensors",
1147	driver => "to-be-written",
1148	devid => 0xf1,
1149	logdev => 0x08,
1150	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1151	}, {
1152	name => "Nat. Semi. PC87351 Super IO Fan Sensors",
1153	driver => "to-be-written",
1154	devid => 0xe2,
1155	logdev => 0x08,
1156	}, {
1157	name => "Nat. Semi. PC87360 Super IO Fan Sensors",
1158	driver => "pc87360",
1159	devid => 0xe1,
1160	logdev => 0x09,
1161	features => FEAT_FAN,
1162	}, {
1163	name => "Nat. Semi. PC87363 Super IO Fan Sensors",
1164	driver => "pc87360",
1165	devid => 0xe8,
1166	logdev => 0x09,
1167	features => FEAT_FAN,
1168	}, {
1169	name => "Nat. Semi. PC87364 Super IO Fan Sensors",
1170	driver => "pc87360",
1171	devid => 0xe4,
1172	logdev => 0x09,
1173	features => FEAT_FAN,
1174	}, {
1175	name => "Nat. Semi. PC87365 Super IO Fan Sensors",
1176	driver => "pc87360",
1177	devid => 0xe5,
1178	logdev => 0x09,
1179	features => FEAT_FAN,
1180	}, {
1181	name => "Nat. Semi. PC87365 Super IO Voltage Sensors",
1182	driver => "pc87360",
1183	devid => 0xe5,
1184	logdev => 0x0d,
1185	features => FEAT_IN,
1186	}, {
1187	name => "Nat. Semi. PC87365 Super IO Thermal Sensors",
1188	driver => "pc87360",
1189	devid => 0xe5,
1190	logdev => 0x0e,
1191	features => FEAT_TEMP,
1192	}, {
1193	name => "Nat. Semi. PC87366 Super IO Fan Sensors",
1194	driver => "pc87360",
1195	devid => 0xe9,
1196	logdev => 0x09,
1197	features => FEAT_FAN,
1198	}, {
1199	name => "Nat. Semi. PC87366 Super IO Voltage Sensors",
1200	driver => "pc87360",
1201	devid => 0xe9,
1202	logdev => 0x0d,
1203	features => FEAT_IN,
1204	}, {
1205	name => "Nat. Semi. PC87366 Super IO Thermal Sensors",
1206	driver => "pc87360",
1207	devid => 0xe9,
1208	logdev => 0x0e,
1209	features => FEAT_TEMP,
1210	}, {
1211	name => "Nat. Semi. PC87372 Super IO Fan Sensors",
1212	driver => "to-be-written",
1213	devid => 0xf0,
1214	logdev => 0x09,
1215	features => FEAT_FAN,
1216	}, {
1217	name => "Nat. Semi. PC87373 Super IO Fan Sensors",
1218	driver => "to-be-written",
1219	devid => 0xf3,
1220	logdev => 0x09,
1221	features => FEAT_FAN,
1222	}, {
1223	name => "Nat. Semi. PC87591 Super IO",
1224	driver => "to-be-written",
1225	devid => 0xec,
1226	logdev => 0x0f,
1227	}, {
1228	name => "Nat. Semi. PC87317 Super IO",
1229	driver => "not-a-sensor",
1230	devid => 0xd0,
1231	}, {
1232	name => "Nat. Semi. PC97317 Super IO",
1233	driver => "not-a-sensor",
1234	devid => 0xdf,
1235	}, {
1236	name => "Nat. Semi. PC8739x Super IO",
1237	driver => "not-a-sensor",
1238	devid => 0xea,
1239	}, {
1240	name => "Nat. Semi. PC8741x Super IO",
1241	driver => "not-a-sensor",
1242	devid => 0xee,
1243	}, {
1244	name => "Nat. Semi. PC87427 Super IO Fan Sensors",
1245	driver => "pc87427",
1246	devid => 0xf2,
1247	logdev => 0x09,
1248	features => FEAT_FAN,
1249	}, {
1250	name => "Nat. Semi. PC87427 Super IO Health Sensors",
1251	driver => "to-be-written",
1252	devid => 0xf2,
1253	logdev => 0x14,
1254	features => FEAT_IN \| FEAT_TEMP,
1255	}
1256	);
1257
1258	@superio_ids_smsc = (
1259	{
1260	name => "SMSC DME1737 Super IO",
1261	# Hardware monitoring features are accessed on the SMBus
1262	driver => "via-smbus-only",
1263	devid => 0x78,
1264	}, {
1265	name => "SMSC DME1737 Super IO",
1266	# The DME1737 shows up twice in this list because it can return either
1267	# 0x78 or 0x77 as its device ID.
1268	# Hardware monitoring features are accessed on the SMBus
1269	driver => "via-smbus-only",
1270	devid => 0x77,
1271	}, {
1272	name => "SMSC EMC2700LPC Super IO",
1273	# no datasheet
1274	devid => 0x67,
1275	}, {
1276	name => "SMSC FDC37B72x Super IO",
1277	driver => "not-a-sensor",
1278	devid => 0x4c,
1279	}, {
1280	name => "SMSC FDC37B78x Super IO",
1281	driver => "not-a-sensor",
1282	devid => 0x44,
1283	}, {
1284	name => "SMSC FDC37C672 Super IO",
1285	driver => "not-a-sensor",
1286	devid => 0x40,
1287	}, {
1288	name => "SMSC FDC37M707 Super IO",
1289	driver => "not-a-sensor",
1290	devid => 0x42,
1291	}, {
1292	name => "SMSC FDC37M81x Super IO",
1293	driver => "not-a-sensor",
1294	devid => 0x4d,
1295	}, {
1296	name => "SMSC LPC47B27x Super IO Fan Sensors",
1297	driver => "smsc47m1",
1298	devid => 0x51,
1299	logdev => 0x0a,
1300	features => FEAT_FAN,
1301	}, {
1302	name => "SMSC LPC47B34x Super IO",
1303	driver => "not-a-sensor",
1304	devid => 0x56,
1305	}, {
1306	name => "SMSC LPC47B357/M967 Super IO",
1307	driver => "not-a-sensor",
1308	devid => 0x5d,
1309	}, {
1310	name => "SMSC LPC47B367-NC Super IO",
1311	driver => "not-a-sensor",
1312	devid => 0x6d,
1313	}, {
1314	name => "SMSC LPC47B37x Super IO Fan Sensors",
1315	driver => "to-be-written",
1316	devid => 0x52,
1317	logdev => 0x0a,
1318	features => FEAT_FAN,
1319	}, {
1320	name => "SMSC LPC47B397-NC Super IO",
1321	driver => "smsc47b397",
1322	devid => 0x6f,
1323	logdev => 0x08,
1324	features => FEAT_FAN \| FEAT_TEMP,
1325	}, {
1326	name => "SMSC LPC47M10x/112/13x Super IO Fan Sensors",
1327	driver => "smsc47m1",
1328	devid => 0x59,
1329	logdev => 0x0a,
1330	features => FEAT_FAN,
1331	}, {
1332	name => "SMSC LPC47M14x Super IO Fan Sensors",
1333	driver => "smsc47m1",
1334	devid => 0x5f,
1335	logdev => 0x0a,
1336	features => FEAT_FAN,
1337	}, {
1338	name => "SMSC LPC47M15x/192/997 Super IO Fan Sensors",
1339	driver => "smsc47m1",
1340	devid => 0x60,
1341	logdev => 0x0a,
1342	features => FEAT_FAN,
1343	}, {
1344	name => "SMSC LPC47M172 Super IO Fan Sensors",
1345	driver => "to-be-written",
1346	devid => 0x14,
1347	logdev => 0x0a,
1348	features => FEAT_FAN,
1349	}, {
1350	name => "SMSC LPC47M182 Super IO Fan Sensors",
1351	driver => "to-be-written",
1352	devid => 0x74,
1353	logdev => 0x0a,
1354	features => FEAT_FAN,
1355	}, {
1356	name => "SMSC LPC47M233 Super IO Sensors",
1357	driver => "smsc47m1",
1358	devid => 0x6b80,
1359	devid_mask => 0xff80,
1360	logdev => 0x0a,
1361	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1362	}, {
1363	name => "SMSC LPC47M292 Super IO Fan Sensors",
1364	driver => "smsc47m1",
1365	devid => 0x6b00,
1366	devid_mask => 0xff80,
1367	logdev => 0x0a,
1368	features => FEAT_FAN,
1369	}, {
1370	name => "SMSC LPC47M584-NC Super IO",
1371	# No datasheet
1372	devid => 0x76,
1373	}, {
1374	name => "SMSC LPC47N252 Super IO Fan Sensors",
1375	driver => "to-be-written",
1376	devid => 0x0e,
1377	logdev => 0x09,
1378	features => FEAT_FAN,
1379	}, {
1380	name => "SMSC LPC47S42x Super IO Fan Sensors",
1381	driver => "to-be-written",
1382	devid => 0x57,
1383	logdev => 0x0a,
1384	features => FEAT_FAN,
1385	}, {
1386	name => "SMSC LPC47S45x Super IO Fan Sensors",
1387	driver => "to-be-written",
1388	devid => 0x62,
1389	logdev => 0x0a,
1390	features => FEAT_FAN,
1391	}, {
1392	name => "SMSC LPC47U33x Super IO Fan Sensors",
1393	driver => "to-be-written",
1394	devid => 0x54,
1395	logdev => 0x0a,
1396	features => FEAT_FAN,
1397	}, {
1398	name => "SMSC SCH3112 Super IO",
1399	driver => "dme1737",
1400	devid => 0x7c,
1401	logdev => 0x0a,
1402	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1403	}, {
1404	name => "SMSC SCH3114 Super IO",
1405	driver => "dme1737",
1406	devid => 0x7d,
1407	logdev => 0x0a,
1408	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1409	}, {
1410	name => "SMSC SCH3116 Super IO",
1411	driver => "dme1737",
1412	devid => 0x7f,
1413	logdev => 0x0a,
1414	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1415	}, {
1416	name => "SMSC SCH4307 Super IO Fan Sensors",
1417	driver => "to-be-written",
1418	devid => 0x90,
1419	logdev => 0x08,
1420	features => FEAT_FAN,
1421	}, {
1422	name => "SMSC SCH5027D-NW Super IO",
1423	# Hardware monitoring features are accessed on the SMBus
1424	driver => "via-smbus-only",
1425	devid => 0x89,
1426	}, {
1427	name => "SMSC SCH5127 Super IO",
1428	driver => "dme1737",
1429	devid => 0x86,
1430	logdev => 0x0a,
1431	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1432	}, {
1433	name => "SMSC SCH5307-NS Super IO",
1434	driver => "smsc47b397",
1435	devid => 0x81,
1436	logdev => 0x08,
1437	features => FEAT_FAN \| FEAT_TEMP,
1438	}, {
1439	name => "SMSC SCH5317 Super IO",
1440	driver => "smsc47b397",
1441	devid => 0x85,
1442	logdev => 0x08,
1443	features => FEAT_FAN \| FEAT_TEMP,
1444	}, {
1445	name => "SMSC SCH5317 Super IO",
1446	# The SCH5317 shows up twice in this list because it can return either
1447	# 0x85 or 0x8c as its device ID.
1448	driver => "smsc47b397",
1449	devid => 0x8c,
1450	logdev => 0x08,
1451	features => FEAT_FAN \| FEAT_TEMP,
1452	}, {
1453	name => "SMSC SCH5504-NS Super IO",
1454	# No datasheet
1455	driver => "not-a-sensor",
1456	devid => 0x79,
1457	}, {
1458	name => "SMSC SCH5514D-NS Super IO",
1459	# No datasheet
1460	driver => "not-a-sensor",
1461	devid => 0x83,
1462	}
1463	);
1464
1465	# Non-standard SMSC chip list. These chips differ from the standard ones
1466	# listed above in that the device ID register address is 0x0d instead of
1467	# 0x20 (as specified by the ISA PNP spec).
1468	@superio_ids_smsc_ns = (
1469	{
1470	name => "SMSC FDC37C665 Super IO",
1471	driver => "not-a-sensor",
1472	devid => 0x65,
1473	}, {
1474	name => "SMSC FDC37C666 Super IO",
1475	driver => "not-a-sensor",
1476	devid => 0x66,
1477	}, {
1478	name => "SMSC FDC37C669 Super IO",
1479	driver => "not-a-sensor",
1480	devid => 0x03,
1481	}, {
1482	name => "SMSC FDC37N769 Super IO",
1483	driver => "not-a-sensor",
1484	devid => 0x28,
1485	}, {
1486	name => "SMSC LPC47N227 Super IO",
1487	driver => "not-a-sensor",
1488	devid => 0x5a,
1489	}
1490	);
1491
1492	@superio_ids_winbond = (
1493	{
1494	name => "VIA VT1211 Super IO Sensors",
1495	driver => "vt1211",
1496	devid => 0x3c,
1497	logdev => 0x0b,
1498	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1499	}, {
1500	name => "VIA VT1212 Super IO Lite", # in 100 pin TQFP package
1501	driver => "not-a-sensor",
1502	devid => 0x3e,
1503	}, {
1504	name => "VIA VT1212 Super IO Lite", # in 48 pin LQFP package
1505	driver => "not-a-sensor",
1506	devid => 0x3f,
1507	}, {
1508	name => "Winbond W83627HF/F/HG/G Super IO Sensors",
1509	driver => "w83627hf",
1510	devid => 0x52,
1511	logdev => 0x0b,
1512	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1513	}, {
1514	name => "Winbond W83627THF/THG Super IO Sensors",
1515	driver => "w83627hf",
1516	devid => 0x82,
1517	logdev => 0x0b,
1518	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1519	}, {
1520	name => "Winbond W83637HF/HG Super IO Sensors",
1521	driver => "w83627hf",
1522	devid => 0x70,
1523	logdev => 0x0b,
1524	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1525	}, {
1526	name => "Winbond W83687THF Super IO Sensors",
1527	driver => "w83627hf",
1528	devid => 0x85,
1529	logdev => 0x0b,
1530	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1531	}, {
1532	name => "Winbond W83697HF/F/HG Super IO Sensors",
1533	driver => "w83627hf",
1534	devid => 0x60,
1535	logdev => 0x0b,
1536	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1537	}, {
1538	name => "Winbond W83697SF/UF/UG Super IO PWM",
1539	driver => "to-be-written",
1540	devid => 0x68,
1541	logdev => 0x0b,
1542	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1543	}, {
1544	name => "Winbond W83627EHF/EF/EHG/EG Super IO Sensors",
1545	driver => "w83627ehf",
1546	# W83627EHF datasheet says 0x886x but 0x8853 was seen, thus the
1547	# broader mask. W83627EHG was seen with ID 0x8863.
1548	devid => 0x8840,
1549	devid_mask => 0xFFC0,
1550	logdev => 0x0b,
1551	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1552	}, {
1553	name => "Winbond W83627DHG Super IO Sensors",
1554	driver => "w83627ehf",
1555	devid => 0xA020,
1556	devid_mask => 0xFFF0,
1557	logdev => 0x0b,
1558	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1559	}, {
1560	name => "Winbond W83667HG Super IO Sensors",
1561	driver => "to-be-written",
1562	devid => 0xA510,
1563	devid_mask => 0xFFF0,
1564	logdev => 0x0b,
1565	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1566	}, {
1567	name => "Winbond W83L517D Super IO",
1568	driver => "not-a-sensor",
1569	devid => 0x61,
1570	}, {
1571	name => "Fintek F71805F/FG Super IO Sensors",
1572	driver => "f71805f",
1573	devid => 0x0406,
1574	logdev => 0x04,
1575	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1576	}, {
1577	name => "Fintek F71862FG Super IO Sensors",
1578	driver => "to-be-written",
1579	devid => 0x0601,
1580	logdev => 0x04,
1581	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1582	}, {
1583	name => "Fintek F71806FG/F71872FG Super IO Sensors",
1584	driver => "f71805f",
1585	devid => 0x0341,
1586	logdev => 0x04,
1587	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1588	}, {
1589	name => "Fintek F71858DG Super IO Sensors",
1590	driver => "to-be-written",
1591	devid => 0x0507,
1592	logdev => 0x02,
1593	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1594	}, {
1595	name => "Fintek F71882FG/F71883FG Super IO Sensors",
1596	driver => "f71882fg",
1597	devid => 0x0541,
1598	logdev => 0x04,
1599	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1600	}, {
1601	name => "Fintek F81216D Super IO",
1602	driver => "not-a-sensor",
1603	devid => 0x0208,
1604	}, {
1605	name => "Fintek F81218D Super IO",
1606	driver => "not-a-sensor",
1607	devid => 0x0206,
1608	}, {
1609	name => "Asus F8000 Super IO",
1610	driver => "f71882fg",
1611	devid => 0x0581,
1612	logdev => 0x04,
1613	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1614	}, {
1615	# Shouldn't be in this family, but seems to be still.
1616	name => "ITE IT8708F Super IO",
1617	driver => "not-a-sensor",
1618	devid => 0x8708,
1619	}, {
1620	# Shouldn't be in this family, but seems to be still.
1621	name => "ITE IT8710F Super IO",
1622	driver => "not-a-sensor",
1623	devid => 0x8710,
1624	}
1625	);
1626
1627	@superio_ids_ite = (
1628	{
1629	name => "ITE IT8702F Super IO Fan Sensors",
1630	driver => "to-be-written",
1631	devid => 0x8702,
1632	logdev => 0x04,
1633	features => FEAT_FAN,
1634	}, {
1635	name => "ITE IT8705F Super IO Sensors",
1636	driver => "it87",
1637	devid => 0x8705,
1638	logdev => 0x04,
1639	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1640	}, {
1641	name => "ITE IT8712F Super IO Sensors",
1642	driver => "it87",
1643	devid => 0x8712,
1644	logdev => 0x04,
1645	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1646	}, {
1647	name => "ITE IT8716F Super IO Sensors",
1648	driver => "it87",
1649	devid => 0x8716,
1650	logdev => 0x04,
1651	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1652	}, {
1653	name => "ITE IT8718F Super IO Sensors",
1654	driver => "it87",
1655	devid => 0x8718,
1656	logdev => 0x04,
1657	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1658	}, {
1659	name => "ITE IT8720F Super IO Sensors",
1660	driver => "it87",
1661	devid => 0x8720,
1662	logdev => 0x04,
1663	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1664	}, {
1665	name => "ITE IT8726F Super IO Sensors",
1666	driver => "it87",
1667	devid => 0x8726,
1668	logdev => 0x04,
1669	features => FEAT_IN \| FEAT_FAN \| FEAT_TEMP,
1670	}
1671	);
1672
1673	# Entries are grouped by family. Each family entry has the following fields:
1674	# family: The family name
1675	# guess (optional): Typical logical device address. This lets us do
1676	# generic probing if we fail to recognize the chip.
1677	# enter: The password sequence to write to the address register
1678	# chips: Array of chips
1679	# The order of families matters, because we stop as soon as one family
1680	# succeeds. So we have to list families with shorter password sequences
1681	# first.
1682	@superio_ids = (
1683	{
1684	family => "National Semiconductor",
1685	enter =>
1686	{
1687	0x2e => [],
1688	0x4e => [],
1689	},
1690	chips => \@superio_ids_natsemi,
1691	}, {
1692	family => "SMSC",
1693	enter =>
1694	{
1695	0x2e => [0x55],
1696	0x4e => [0x55],
1697	},
1698	chips => \@superio_ids_smsc,
1699	ns_detect => \&smsc_ns_detect_superio,
1700	ns_chips => \@superio_ids_smsc_ns,
1701	}, {
1702	family => "VIA/Winbond/Fintek",
1703	guess => 0x290,
1704	enter =>
1705	{
1706	0x2e => [0x87, 0x87],
1707	0x4e => [0x87, 0x87],
1708	},
1709	chips => \@superio_ids_winbond,
1710	}, {
1711	family => "ITE",
1712	guess => 0x290,
1713	enter =>
1714	{
1715	0x2e => [0x87, 0x01, 0x55, 0x55],
1716	0x4e => [0x87, 0x01, 0x55, 0xaa],
1717	},
1718	chips => \@superio_ids_ite,
1719	}
1720	);
1721
1722	# Drivers for bridge, CPU and memory embedded sensors
1723	# Each entry must have the following fields:
1724	# name: The device name
1725	# driver: The driver name. Put "to-be-written" if no driver is available.
1726	# detect: Detection callback function. No parameter will be passed to
1727	# this function, it must use global lists of PCI devices, CPU,
1728	# etc. It must return a confidence value, undef if no supported
1729	# CPU is found.
1730	use vars qw(@cpu_ids);
1731
1732	@cpu_ids = (
1733	{
1734	name => "Silicon Integrated Systems SIS5595",
1735	driver => "sis5595",
1736	detect => \&sis5595_pci_detect,
1737	}, {
1738	name => "VIA VT82C686 Integrated Sensors",
1739	driver => "via686a",
1740	detect => \&via686a_pci_detect,
1741	}, {
1742	name => "VIA VT8231 Integrated Sensors",
1743	driver => "vt8231",
1744	detect => \&via8231_pci_detect,
1745	}, {
1746	name => "AMD K8 thermal sensors",
1747	driver => "k8temp",
1748	detect => \&k8temp_pci_detect,
1749	}, {
1750	name => "AMD K10 thermal sensors",
1751	driver => "to-be-written",
1752	detect => \&k10temp_pci_detect,
1753	}, {
1754	name => "Intel Core family thermal sensor",
1755	driver => "coretemp",
1756	detect => \&coretemp_detect,
1757	}, {
1758	name => "Intel AMB FB-DIMM thermal sensor",
1759	driver => "i5k_amb",
1760	detect => \&intel_amb_detect,
1761	}, {
1762	name => "VIA C7 thermal and voltage sensors",
1763	driver => "c7temp",
1764	detect => \&c7temp_detect,
1765	}
1766	);
1767
1768	#######################
1769	# AUXILIARY FUNCTIONS #
1770	#######################
1771
1772	# $_[0] is the sought value
1773	# $_[1..] is the list to seek in
1774	# Returns: 1 if found, 0 if not.
1775	sub contains
1776	{
1777	my $sought = shift;
1778	local $_;
1779
1780	foreach (@_) {
1781	return 1 if $sought eq $_;
1782	}
1783	return 0;
1784	}
1785
1786	# Address can be decimal or hexadecimal
1787	sub valid_address
1788	{
1789	my $value = shift;
1790
1791	if ($value !~ m/^(0x[0-9a-f]+\|[0-9]+)$/i) {
1792	print "$value is not a valid address, sorry.\n";
1793	exit -1;
1794	}
1795	$value = oct($value) if $value =~ m/^0x/i;
1796
1797	return $value;
1798	}
1799
1800	sub parse_not_to_scan
1801	{
1802	my ($min, $max, $to_parse) = @_;
1803	my @ranges = split /\s, \s/, $to_parse;
1804	my @res;
1805	my $range;
1806
1807	foreach $range (@ranges) {
1808	my ($start, $end) = split /\s-\s/, $range;
1809	$start = valid_address($start);
1810	if (defined $end) {
1811	$end = valid_address($end);
1812	if ($end <= $start) {
1813	print "$start-$end is not a valid range, sorry.\n";
1814	exit -1;
1815	}
1816	$start = $min if $start < $min;
1817	$end = $max if $end > $max;
1818	push @res, ($start..$end);
1819	} else {
1820	push @res, $start if $start >= $min and $start <= $max;
1821	}
1822	}
1823
1824	return sort { $a <=> $b } @res;
1825	}
1826
1827	# $_[0]: Reference to list 1
1828	# $_[1]: Reference to list 2
1829	# Result: 0 if they have no elements in common, 1 if they have
1830	# Elements must be numeric.
1831	sub any_list_match
1832	{
1833	my ($list1, $list2) = @_;
1834	my ($el1, $el2);
1835
1836	foreach $el1 (@$list1) {
1837	foreach $el2 (@$list2) {
1838	return 1 if $el1 == $el2;
1839	}
1840	}
1841	return 0;
1842	}
1843
1844	###################
1845	# I/O PORT ACCESS #
1846	###################
1847
1848	sub initialize_ioports
1849	{
1850	sysopen(IOPORTS, "/dev/port", O_RDWR)
1851	or die "/dev/port: $!\n";
1852	binmode(IOPORTS);
1853	}
1854
1855	sub close_ioports
1856	{
1857	close(IOPORTS);
1858	}
1859
1860	# $_[0]: port to read
1861	# Returns: -1 on failure, read value on success.
1862	sub inb
1863	{
1864	my ($res, $nrchars);
1865	sysseek(IOPORTS, $_[0], 0) or return -1;
1866	$nrchars = sysread(IOPORTS, $res, 1);
1867	return -1 if not defined $nrchars or $nrchars != 1;
1868	$res = unpack("C", $res);
1869	return $res;
1870	}
1871
1872	# $_[0]: port to write
1873	# $_[1]: value to write
1874	# We assume this can't fail.
1875	sub outb
1876	{
1877	sysseek(IOPORTS, $_[0], 0);
1878	syswrite(IOPORTS, pack("C", $_[1]), 1);
1879	}
1880
1881	# $_[0]: Address register
1882	# $_[1]: Data register
1883	# $_[2]: Register to read
1884	# Returns: read value
1885	sub isa_read_byte
1886	{
1887	outb($_[0], $_[2]);
1888	return inb($_[1]);
1889	}
1890
1891	# $_[0]: Base address
1892	# $_[1]: Register to read
1893	# Returns: read value
1894	# This one can be used for any ISA chip with index register at
1895	# offset 5 and data register at offset 6.
1896	sub isa_read_i5d6
1897	{
1898	my ($addr, $reg) = @_;
1899	return isa_read_byte($addr + 5, $addr + 6, $reg);
1900	}
1901
1902	#################
1903	# AUTODETECTION #
1904	#################
1905
1906	use vars qw($dev_i2c $sysfs_root);
1907
1908	sub initialize_conf
1909	{
1910	my $use_devfs = 0;
1911	open(local *INPUTFILE, "/proc/mounts") or die "Can't access /proc/mounts!";
1912	local $_;
1913	while (<INPUTFILE>) {
1914	if (m@^\w+ /dev devfs @) {
1915	$use_devfs = 1;
1916	$dev_i2c = '/dev/i2c/';
1917	}
1918	if (m@^\S+ (/\w+) sysfs @) {
1919	$sysfs_root = $1;
1920	}
1921	}
1922	close(INPUTFILE);
1923
1924	# We need sysfs for many things
1925	if (!defined $sysfs_root) {
1926	print "Sysfs not mounted?\n";
1927	exit -1;
1928	}
1929
1930	my $use_udev = 0;
1931	if (open(*INPUTFILE, '/etc/udev/udev.conf')) {
1932	while (<INPUTFILE>) {
1933	next unless m/^\sudev_db\s=\s\"([^"])\"/
1934	\|\| m/^\sudev_db\s=\s*(\S+)/;
1935	if (-e $1) {
1936	$use_udev = 1;
1937	$dev_i2c = '/dev/i2c-';
1938	}
1939	last;
1940	}
1941	close(INPUTFILE);
1942	}
1943
1944	if (!$use_udev) {
1945	# Try some known default udev db locations, just in case
1946	if (-e '/dev/.udev.tdb' \|\| -e '/dev/.udev'
1947	\|\| -e '/dev/.udevdb') {
1948	$use_udev = 1;
1949	$dev_i2c = '/dev/i2c-';
1950	}
1951	}
1952
1953	if (!($use_devfs \|\| $use_udev)) {
1954	if (! -c '/dev/i2c-0' && -x '/sbin/MAKEDEV') {
1955	system("/sbin/MAKEDEV i2c");
1956	}
1957	if (! -c '/dev/i2c-0' && -x '/dev/MAKEDEV') {
1958	system("/dev/MAKEDEV i2c");
1959	}
1960	if (-c '/dev/i2c-0') {
1961	$dev_i2c = '/dev/i2c-';
1962	} else { # default
1963	print "No i2c device files found.\n";
1964	exit -1;
1965	}
1966	}
1967	}
1968
1969	# [0] -> VERSION
1970	# [1] -> PATCHLEVEL
1971	# [2] -> SUBLEVEL
1972	# [3] -> EXTRAVERSION
1973	#
1974	use vars qw(@kernel_version $kernel_arch);
1975
1976	sub initialize_kernel_version
1977	{
1978	`uname -r` =~ /(\d+)\.(\d+)\.(\d+)(.*)/;
1979	@kernel_version = ($1, $2, $3, $4);
1980	chomp($kernel_arch = `uname -m`);
1981
1982	# We only support kernels >= 2.6.5
1983	if (!kernel_version_at_least(2, 6, 5)) {
1984	print "Kernel version is unsupported (too old, >= 2.6.5 needed)\n";
1985	exit -1;
1986	}
1987	}
1988
1989	sub kernel_version_at_least
1990	{
1991	my ($vers, $plvl, $slvl) = @_;
1992	return 1 if ($kernel_version[0] > $vers \|\|
1993	($kernel_version[0] == $vers &&
1994	($kernel_version[1] > $plvl \|\|
1995	($kernel_version[1] == $plvl &&
1996	($kernel_version[2] >= $slvl)))));
1997	return 0;
1998	}
1999
2000	# @cpu is a list of reference to hashes, one hash per CPU.
2001	# Each entry has the following keys: vendor_id, cpu family, model,
2002	# model name and stepping, directly taken from /proc/cpuinfo.
2003	use vars qw(@cpu);
2004
2005	sub initialize_cpu_list
2006	{
2007	local $_;
2008	my $entry;
2009
2010	open(local *INPUTFILE, "/proc/cpuinfo") or die "Can't access /proc/cpuinfo!";
2011	while (<INPUTFILE>) {
2012	if (m/^processor\s:\s(\d+)/) {
2013	push @cpu, $entry if scalar keys(%{$entry}); # Previous entry
2014	$entry = {}; # New entry
2015	next;
2016	}
2017	if (m/^(vendor_id\|cpu family\|model\|model name\|stepping)\s:\s(.+)$/) {
2018	my $k = $1;
2019	my $v = $2;
2020	$v =~ s/\s+/ /g; # Merge multiple spaces
2021	$v =~ s/ $//; # Trim trailing space
2022	$entry->{$k} = $v;
2023	next;
2024	}
2025	}
2026	close(INPUTFILE);
2027	push @cpu, $entry if scalar keys(%{$entry}); # Last entry
2028	}
2029
2030	# @i2c_adapters is a list of references to hashes, one hash per I2C/SMBus
2031	# adapter present on the system. Each entry has the following keys: name
2032	# (directly taken from /sys/class/i2c-adapter) and driver.
2033	use vars qw(@i2c_adapters);
2034
2035	sub initialize_i2c_adapters_list
2036	{
2037	my $entry;
2038	local $_;
2039
2040	my $class_dir = "${sysfs_root}/class/i2c-adapter";
2041	opendir(local *ADAPTERS, $class_dir) or return;
2042
2043	while (defined($_ = readdir(ADAPTERS))) {
2044	next unless m/^i2c-(\d+)$/;
2045	$entry = {}; # New entry
2046	$entry->{name} = sysfs_device_attribute("${class_dir}/i2c-$1",
2047	"name")
2048	\|\| sysfs_device_attribute("${class_dir}/i2c-$1/device",
2049	"name");
2050	next if $entry->{name} eq "ISA main adapter";
2051
2052	# First try to get the I2C adapter driver name from sysfs,
2053	# and if it fails, fall back to searching our list of known
2054	# I2C adapters.
2055	$entry->{driver} = sysfs_device_driver("${class_dir}/i2c-$1/device")
2056	\|\| find_i2c_adapter_driver($entry->{name})
2057	\|\| 'UNKNOWN';
2058	$i2c_adapters[$1] = $entry;
2059	}
2060	closedir(ADAPTERS);
2061	}
2062
2063	###########
2064	# MODULES #
2065	###########
2066
2067	use vars qw(%modules_list %modules_supported @modules_we_loaded);
2068
2069	sub initialize_modules_list
2070	{
2071	local $_;
2072
2073	open(local *INPUTFILE, "/proc/modules") or return;
2074	while (<INPUTFILE>) {
2075	tr/-/_/; # Probably not needed
2076	$modules_list{$1} = 1 if m/^(\S*)/;
2077	}
2078	}
2079
2080	sub is_module_loaded
2081	{
2082	my $module = shift;
2083	$module =~ tr/-/_/;
2084	return exists $modules_list{$module}
2085	}
2086
2087	sub load_module
2088	{
2089	my $module = shift;
2090
2091	return if is_module_loaded($module);
2092
2093	system("modprobe", $module);
2094	if (($? >> 8) != 0) {
2095	print "Failed to load module $module.\n";
2096	return -1;
2097	}
2098
2099	print "Module $module loaded successfully.\n";
2100	push @modules_we_loaded, $module;
2101
2102	# Update the list of loaded modules
2103	my $normalized = $module;
2104	$normalized =~ tr/-/_/;
2105	$modules_list{$normalized} = 1;
2106	}
2107
2108	sub loaded_by_us
2109	{
2110	my $sought = shift;
2111	local $_;
2112
2113	$sought =~ tr/-/_/;
2114	foreach (@modules_we_loaded) {
2115	my $module = $_;
2116	$module =~ tr/-/_/;
2117	return 1 if $module eq $sought;
2118	}
2119	return 0;
2120	}
2121
2122	sub initialize_modules_supported
2123	{
2124	foreach my $chip (@chip_ids) {
2125	next if $chip->{driver} eq "to-be-written";
2126	next if $chip->{driver} eq "use-isa-instead";
2127
2128	my $normalized = $chip->{driver};
2129	$normalized =~ tr/-/_/;
2130	$modules_supported{$normalized}++;
2131	}
2132	}
2133
2134	sub unload_modules
2135	{
2136	return unless @modules_we_loaded;
2137
2138	# Attempt to unload all kernel drivers we loaded ourselves
2139	while (my $module = pop @modules_we_loaded) {
2140	print "Unloading $module... ";
2141	system("modprobe -r $module 2> /dev/null");
2142	if (($? >> 8) == 0) {
2143	print "OK\n";
2144	} else {
2145	print "failed\n";
2146	}
2147	}
2148	print "\n";
2149	}
2150
2151	############
2152	# DMI DATA #
2153	############
2154
2155	use vars qw(%dmi);
2156
2157	sub initialize_dmi_data
2158	{
2159	my %items = (
2160	# sysfs file name => dmidecode string name
2161	sys_vendor => 'system-manufacturer',
2162	product_name => 'system-product-name',
2163	product_version => 'system-version',
2164	board_vendor => 'baseboard-manufacturer',
2165	board_name => 'baseboard-product-name',
2166	board_version => 'baseboard-product-name',
2167	chassis_type => 'chassis-type',
2168	);
2169	# Many BIOS have broken DMI data, filter it out
2170	my %fake = (
2171	'System Manufacturer' => 1,
2172	'System Name' => 1,
2173	);
2174	my $dmi_id_dir;
2175
2176	# First try reading the strings from sysfs if available
2177	if (-d ($dmi_id_dir = "$sysfs_root/devices/virtual/dmi/id") # kernel >= 2.6.28
2178	\|\| -d ($dmi_id_dir = "$sysfs_root/class/dmi/id")) {
2179	foreach my $k (keys %items) {
2180	$dmi{$k} = sysfs_device_attribute($dmi_id_dir, $k);
2181	}
2182	} else {
2183	# Else fallback on calling dmidecode
2184	my $version;
2185	if (open(local *DMIDECODE, "dmidecode --version 2>/dev/null \|")) {
2186	$version = <DMIDECODE>;
2187	close(DMIDECODE);
2188	chomp $version if defined $version;
2189	}
2190
2191	if (!defined $version
2192	\|\| !($version =~ m/^(\d+).(\d+)$/)
2193	\|\| !(($1 == 2 && $2 >= 7) \|\| $1 > 2)) {
2194	print "# DMI data unavailable, please consider installing dmidecode 2.7\n".
2195	"# or later for better results.\n";
2196	return;
2197	}
2198
2199	foreach my $k (keys %items) {
2200	next unless open(local *DMIDECODE,
2201	"dmidecode -s $items{$k} 2>/dev/null \|");
2202	$dmi{$k} = <DMIDECODE>;
2203	close(DMIDECODE);
2204	}
2205	}
2206
2207	# Strip trailing white-space, discard empty field
2208	foreach my $k (keys %dmi) {
2209	if (!defined $dmi{$k}) {
2210	delete $dmi{$k};
2211	next;
2212	}
2213	$dmi{$k} =~ s/\s*$//;
2214	delete $dmi{$k} if $dmi{$k} eq '' \|\| exists $fake{$dmi{$k}};
2215	}
2216	}
2217
2218	sub print_dmi_summary
2219	{
2220	my ($system, $board);
2221	if (defined $dmi{sys_vendor} && defined $dmi{product_name}) {
2222	$system = "$dmi{sys_vendor} $dmi{product_name}";
2223	}
2224	if (defined $dmi{board_vendor} && defined $dmi{board_name}) {
2225	$board = "$dmi{board_vendor} $dmi{board_name}";
2226	}
2227
2228	if (defined $system) {
2229	print "# System: $system";
2230	print " (laptop)" if (is_laptop());
2231	print "\n";
2232	}
2233	print "# Board: $board\n" if defined $board
2234	&& (!defined $system \|\| $system ne $board);
2235	}
2236
2237	sub dmi_match
2238	{
2239	my $key = shift;
2240	my $value;
2241
2242	return unless defined $dmi{$key};
2243	while (defined ($value = shift)) {
2244	return 1 if $dmi{$key} =~ m/\b$value\b/i;
2245	}
2246	return 0;
2247	}
2248
2249	sub is_laptop
2250	{
2251	return 0 unless $dmi{chassis_type};
2252	return 1 if $dmi{chassis_type} =~ m/(Laptop\|Notebook\|Hand Held)/i;
2253	return 1 if $dmi{chassis_type} =~ m/^(9\|10\|11\|14)$/;
2254	return 0;
2255	}
2256
2257	#################
2258	# SYSFS HELPERS #
2259	#################
2260
2261	# From a sysfs device path, return the driver (module) name, or undef
2262	sub sysfs_device_driver
2263	{
2264	my $device = shift;
2265
2266	my $link = readlink("$device/driver/module");
2267	return unless defined $link;
2268	return basename($link);
2269	}
2270
2271	# From a sysfs device path, return the subsystem name, or undef
2272	sub sysfs_device_subsystem
2273	{
2274	my $device = shift;
2275
2276	my $link = readlink("$device/subsystem");
2277	return unless defined $link;
2278	return basename($link);
2279	}
2280
2281	# From a sysfs device path and an attribute name, return the attribute
2282	# value, or undef
2283	sub sysfs_device_attribute
2284	{
2285	my ($device, $attr) = @_;
2286	my $value;
2287
2288	open(local *FILE, "$device/$attr") or return;
2289	$value = <FILE>;
2290	close(FILE);
2291	return unless defined $value;
2292
2293	chomp($value);
2294	return $value;
2295	}
2296
2297	##############
2298	# PCI ACCESS #
2299	##############
2300
2301	use vars qw(%pci_list);
2302
2303	# This function returns a list of hashes. Each hash has some PCI information:
2304	# 'domain', 'bus', 'slot' and 'func' uniquely identify a PCI device in a
2305	# computer; 'vendid' and 'devid' uniquely identify a type of device.
2306	# 'class' lets us spot unknown SMBus adapters.
2307	sub read_sys_dev_pci
2308	{
2309	my $devices = shift;
2310	my ($dev, @pci_list);
2311
2312	opendir(local *DEVICES, "$devices")
2313	or die "$devices: $!";
2314
2315	while (defined($dev = readdir(DEVICES))) {
2316	my %record;
2317	next unless $dev =~
2318	m/^(?:([\da-f]+):)?([\da-f]+):([\da-f]+)\.([\da-f]+)$/;
2319
2320	$record{domain} = hex $1;
2321	$record{bus} = hex $2;
2322	$record{slot} = hex $3;
2323	$record{func} = hex $4;
2324
2325	$record{vendid} = oct sysfs_device_attribute("$devices/$dev",
2326	"vendor");
2327	$record{devid} = oct sysfs_device_attribute("$devices/$dev",
2328	"device");
2329	$record{class} = (oct sysfs_device_attribute("$devices/$dev",
2330	"class")) >> 8;
2331
2332	push @pci_list, \%record;
2333	}
2334
2335	return \@pci_list;
2336	}
2337
2338	sub initialize_pci
2339	{
2340	my $pci_list;
2341	local $_;
2342
2343	$pci_list = read_sys_dev_pci("$sysfs_root/bus/pci/devices");
2344
2345	# Note that we lose duplicate devices at this point, but we don't
2346	# really care. What matters to us is which unique devices are present,
2347	# not how many of each.
2348	%pci_list = map {
2349	sprintf("%04x:%04x", $_->{vendid}, $_->{devid}) => $_
2350	} @{$pci_list};
2351	}
2352
2353	#####################
2354	# ADAPTER DETECTION #
2355	#####################
2356
2357	# Build and return a PCI device's bus ID
2358	sub pci_busid
2359	{
2360	my $device = shift;
2361	my $busid;
2362
2363	$busid = sprintf("\%02x:\%02x.\%x",
2364	$device->{bus}, $device->{slot}, $device->{func});
2365	$busid = sprintf("\%04x:", $device->{domain}) . $busid
2366	if defined $device->{domain};
2367
2368	return $busid;
2369	}
2370
2371	sub adapter_pci_detection
2372	{
2373	my ($key, $device, $try, %smbus, $count);
2374
2375	# Build a list of detected SMBus devices
2376	foreach $key (keys %pci_list) {
2377	$device = $pci_list{$key};
2378	$smbus{$key}++
2379	if exists $device->{class} &&
2380	$device->{class} == 0x0c05; # SMBus
2381	}
2382
2383	# Loop over the known I2C/SMBus adapters
2384	foreach $try (@pci_adapters) {
2385	$key = sprintf("%04x:%04x", $try->{vendid}, $try->{devid});
2386	next unless exists $pci_list{$key};
2387
2388	$device = $pci_list{$key};
2389	if ($try->{driver} eq "to-be-tested") {
2390	print "\nWe are currently looking for testers for this adapter!\n".
2391	"Please check http://www.lm-sensors.org/wiki/Devices\n".
2392	"and/or contact us if you want to help.\n\n".
2393	"Continue... ";
2394	<STDIN>;
2395	print "\n";
2396	}
2397
2398	if ($try->{driver} =~ m/^to-be-/) {
2399	printf "No known driver for device \%s: \%s\n",
2400	pci_busid($device), $try->{procid};
2401	} else {
2402	printf "Using driver `\%s' for device \%s: \%s\n",
2403	$try->{driver}, pci_busid($device),
2404	$try->{procid};
2405	$count++;
2406	load_module($try->{driver});
2407	}
2408
2409	# Delete from detected SMBus device list
2410	delete $smbus{$key};
2411	}
2412
2413	# Now see if there are unknown SMBus devices left
2414	foreach $key (keys %smbus) {
2415	$device = $pci_list{$key};
2416	printf "Found unknown SMBus adapter \%04x:\%04x at \%s.\n",
2417	$device->{vendid}, $device->{devid}, pci_busid($device);
2418	}
2419
2420	print "Sorry, no supported PCI bus adapters found.\n"
2421	unless $count;
2422	}
2423
2424	# $_[0]: Adapter description as found in /sys/class/i2c-adapter
2425	sub find_i2c_adapter_driver
2426	{
2427	my $name = shift;
2428	my $entry;
2429
2430	foreach $entry (@i2c_adapter_names) {
2431	return $entry->{driver}
2432	if $name =~ $entry->{match};
2433	}
2434	}
2435
2436	#############################
2437	# I2C AND SMBUS /DEV ACCESS #
2438	#############################
2439
2440	# This should really go into a separate module/package.
2441
2442	# These are copied from <linux/i2c-dev.h>
2443
2444	use constant IOCTL_I2C_SLAVE => 0x0703;
2445	use constant IOCTL_I2C_FUNCS => 0x0705;
2446	use constant IOCTL_I2C_SMBUS => 0x0720;
2447
2448	use constant SMBUS_READ => 1;
2449	use constant SMBUS_WRITE => 0;
2450
2451	use constant SMBUS_QUICK => 0;
2452	use constant SMBUS_BYTE => 1;
2453	use constant SMBUS_BYTE_DATA => 2;
2454	use constant SMBUS_WORD_DATA => 3;
2455
2456	use constant I2C_FUNC_SMBUS_QUICK => 0x00010000;
2457	use constant I2C_FUNC_SMBUS_READ_BYTE => 0x00020000;
2458
2459	# Get the i2c adapter's functionalities
2460	# $_[0]: Reference to an opened filehandle
2461	# Returns: -1 on failure, functionality bitfield on success.
2462	sub i2c_get_funcs
2463	{
2464	my $file = shift;
2465	my $funcs = pack("L", 0); # Allocate space
2466
2467	ioctl($file, IOCTL_I2C_FUNCS, $funcs) or return -1;
2468	$funcs = unpack("L", $funcs);
2469
2470	return $funcs;
2471	}
2472
2473	# Select the device to communicate with through its address.
2474	# $_[0]: Reference to an opened filehandle
2475	# $_[1]: Address to select
2476	# Returns: 0 on failure, 1 on success.
2477	sub i2c_set_slave_addr
2478	{
2479	my ($file, $addr) = @_;
2480
2481	# Reset register data cache
2482	@i2c_byte_cache = ();
2483
2484	$addr += 0; # Make sure it's a number not a string
2485	ioctl($file, IOCTL_I2C_SLAVE, $addr) or return 0;
2486	return 1;
2487	}
2488
2489	# i2c_smbus_access is based upon the corresponding C function (see
2490	# <linux/i2c-dev.h>). You should not need to call this directly.
2491	# $_[0]: Reference to an opened filehandle
2492	# $_[1]: SMBUS_READ for reading, SMBUS_WRITE for writing
2493	# $_[2]: Command (usually register number)
2494	# $_[3]: Transaction kind (SMBUS_BYTE, SMBUS_BYTE_DATA, etc.)
2495	# $_[4]: Reference to an array used for input/output of data
2496	# Returns: 0 on failure, 1 on success.
2497	# Note that we need to get back to Integer boundaries through the 'x2'
2498	# in the pack. This is very compiler-dependent; I wish there was some other
2499	# way to do this.
2500	sub i2c_smbus_access
2501	{
2502	my ($file, $read_write, $command, $size, $data) = @_;
2503	my $data_array = pack("C32", @$data);
2504	my $ioctl_data = pack("C2x2Ip", $read_write, $command, $size,
2505	$data_array);
2506
2507	ioctl($file, IOCTL_I2C_SMBUS, $ioctl_data) or return 0;
2508	@{$_[4]} = unpack("C32", $data_array);
2509	return 1;
2510	}
2511
2512	# $_[0]: Reference to an opened filehandle
2513	# Returns: -1 on failure, the read byte on success.
2514	sub i2c_smbus_read_byte
2515	{
2516	my ($file) = @_;
2517	my @data;
2518
2519	i2c_smbus_access($file, SMBUS_READ, 0, SMBUS_BYTE, \@data)
2520	or return -1;
2521	return $data[0];
2522	}
2523
2524	# $_[0]: Reference to an opened filehandle
2525	# $_[1]: Command byte (usually register number)
2526	# Returns: -1 on failure, the read byte on success.
2527	# Read byte data values are cached by default. As we keep reading the
2528	# same registers over and over again in the detection functions, and
2529	# SMBus can be slow, caching results in a big performance boost.
2530	sub i2c_smbus_read_byte_data
2531	{
2532	my ($file, $command, $nocache) = @_;
2533	my @data;
2534
2535	return $i2c_byte_cache[$command]
2536	if !$nocache && exists $i2c_byte_cache[$command];
2537
2538	i2c_smbus_access($file, SMBUS_READ, $command, SMBUS_BYTE_DATA, \@data)
2539	or return -1;
2540	return ($i2c_byte_cache[$command] = $data[0]);
2541	}
2542
2543	# $_[0]: Reference to an opened filehandle
2544	# $_[1]: Command byte (usually register number)
2545	# Returns: -1 on failure, the read word on success.
2546	# Use this function with care, some devices don't like word reads,
2547	# so you should do as much of the detection as possible using byte reads,
2548	# and only start using word reads when there is a good chance that
2549	# the detection will succeed.
2550	# Note: some devices use the wrong endianness.
2551	sub i2c_smbus_read_word_data
2552	{
2553	my ($file, $command) = @_;
2554	my @data;
2555	i2c_smbus_access($file, SMBUS_READ, $command, SMBUS_WORD_DATA, \@data)
2556	or return -1;
2557	return $data[0] + 256 * $data[1];
2558	}
2559
2560	# $_[0]: Reference to an opened filehandle
2561	# $_[1]: Address
2562	# $_[2]: Functionalities of this i2c adapter
2563	# Returns: 1 on successful probing, 0 else.
2564	# This function is meant to prevent AT24RF08 corruption and write-only
2565	# chips locks. This is done by choosing the best probing method depending
2566	# on the address range.
2567	sub i2c_probe
2568	{
2569	my ($file, $addr, $funcs) = @_;
2570
2571	if (($addr >= 0x50 && $addr <= 0x5F)
2572	\|\| ($addr >= 0x30 && $addr <= 0x37)) {
2573	# This covers all EEPROMs we know of, including page protection
2574	# addresses. Note that some page protection addresses will not
2575	# reveal themselves with this, because they ack on write only,
2576	# but this is probably better since some EEPROMs write-protect
2577	# themselves permanently on almost any write to their page
2578	# protection address.
2579	return 0 unless ($funcs & I2C_FUNC_SMBUS_READ_BYTE);
2580	return i2c_smbus_access($file, SMBUS_READ, 0, SMBUS_BYTE, []);
2581	} else {
2582	return 0 unless ($funcs & I2C_FUNC_SMBUS_QUICK);
2583	return i2c_smbus_access($file, SMBUS_WRITE, 0, SMBUS_QUICK, []);
2584	}
2585	}
2586
2587	# $_[0]: Reference to an opened file handle
2588	# Returns: 1 if the device is safe to access, 0 else.
2589	# This function is meant to prevent access to 1-register-only devices,
2590	# which are designed to be accessed with SMBus receive byte and SMBus send
2591	# byte transactions (i.e. short reads and short writes) and treat SMBus
2592	# read byte as a real write followed by a read. The device detection
2593	# routines would write random values to the chip with possibly very nasty
2594	# results for the hardware. Note that this function won't catch all such
2595	# chips, as it assumes that reads and writes relate to the same register,
2596	# but that's the best we can do.
2597	sub i2c_safety_check
2598	{
2599	my ($file) = @_;
2600	my $data;
2601
2602	# First we receive a byte from the chip, and remember it.
2603	$data = i2c_smbus_read_byte($file);
2604	return 1 if ($data < 0);
2605
2606	# We receive a byte again; very likely to be the same for
2607	# 1-register-only devices.
2608	return 1 if (i2c_smbus_read_byte($file) != $data);
2609
2610	# Then we try a standard byte read, with a register offset equal to
2611	# the byte we received; we should receive the same byte value in return.
2612	return 1 if (i2c_smbus_read_byte_data($file, $data) != $data);
2613
2614	# Then we try a standard byte read, with a slightly different register
2615	# offset; we should again receive the same byte value in return.
2616	return 1 if (i2c_smbus_read_byte_data($file, $data ^ 1) != ($data ^ 1));
2617
2618	# Apprently this is a 1-register-only device, restore the original
2619	# register value and leave it alone.
2620	i2c_smbus_read_byte_data($file, $data);
2621	return 0;
2622	}
2623
2624	####################
2625	# ADAPTER SCANNING #
2626	####################
2627
2628	use vars qw(%chips_detected);
2629
2630	# We will build a complicated structure %chips_detected here, being a hash
2631	# where keys are driver names and values are detected chip information in
2632	# the form of a list of hashes of type 'detect_data'.
2633
2634	# Type detect_data:
2635	# A hash
2636	# with field 'i2c_devnr', contianing the /dev/i2c-* number of this
2637	# adapter (if this is an I2C detection)
2638	# with field 'i2c_addr', containing the I2C address of the detection;
2639	# (if this is an I2C detection)
2640	# with field 'i2c_sub_addrs', containing a reference to a list of
2641	# other I2C addresses (if this is an I2C detection)
2642	# with field 'isa_addr' containing the ISA address this chip is on
2643	# (if this is an ISA detection)
2644	# with field 'conf', containing the confidence level of this detection
2645	# with field 'chipname', containing the chip name
2646	# with optional field 'alias_detect', containing a reference to an alias
2647	# detection function for this chip
2648
2649	# This adds a detection to the above structure.
2650	# Not all possibilities of i2c_addr and i2c_sub_addrs are exhausted.
2651	# In all normal cases, it should be all right.
2652	# $_[0]: chip driver
2653	# $_[1]: reference to data hash
2654	# Returns: Nothing
2655	sub add_i2c_to_chips_detected
2656	{
2657	my ($chipdriver, $datahash) = @_;
2658	my ($i, $new_detected_ref, $detected_ref, $detected_entry,
2659	$put_in_detected, @hash_addrs, @entry_addrs);
2660
2661	# First determine where the hash has to be added.
2662	$chips_detected{$chipdriver} = []
2663	unless exists $chips_detected{$chipdriver};
2664	$new_detected_ref = $chips_detected{$chipdriver};
2665
2666	# Find out whether our new entry should go into the detected list
2667	# or not. We compare all i2c addresses; if at least one matches,
2668	# but our confidence value is lower, we assume this is a misdetection,
2669	# in which case we simply discard our new entry.
2670	@hash_addrs = ($datahash->{i2c_addr});
2671	push @hash_addrs, @{$datahash->{i2c_sub_addrs}}
2672	if exists $datahash->{i2c_sub_addrs};
2673	$put_in_detected = 1;
2674	FIND_LOOP:
2675	foreach $detected_ref (values %chips_detected) {
2676	foreach $detected_entry (@{$detected_ref}) {
2677	next unless defined $detected_entry->{i2c_addr};
2678	@entry_addrs = ($detected_entry->{i2c_addr});
2679	push @entry_addrs, @{$detected_entry->{i2c_sub_addrs}}
2680	if exists $detected_entry->{i2c_sub_addrs};
2681	if ($detected_entry->{i2c_devnr} == $datahash->{i2c_devnr} &&
2682	any_list_match(\@entry_addrs, \@hash_addrs)) {
2683	if ($detected_entry->{conf} >= $datahash->{conf}) {
2684	$put_in_detected = 0;
2685	}
2686	last FIND_LOOP;
2687	}
2688	}
2689	}
2690
2691	return unless $put_in_detected;
2692
2693	# Here, we discard all entries which match at least in one main or
2694	# sub address. This may not be the best idea to do, as it may remove
2695	# detections without replacing them with second-best ones. Too bad.
2696	foreach $detected_ref (values %chips_detected) {
2697	for ($i = @$detected_ref-1; $i >=0; $i--) {
2698	next unless defined $detected_ref->[$i]->{i2c_addr};
2699	@entry_addrs = ($detected_ref->[$i]->{i2c_addr});
2700	push @entry_addrs, @{$detected_ref->[$i]->{i2c_sub_addrs}}
2701	if exists $detected_ref->[$i]->{i2c_sub_addrs};
2702	if ($detected_ref->[$i]->{i2c_devnr} == $datahash->{i2c_devnr} &&
2703	any_list_match(\@entry_addrs, \@hash_addrs)) {
2704	splice @$detected_ref, $i, 1;
2705	}
2706	}
2707	}
2708
2709	# Now add the new entry to detected
2710	push @$new_detected_ref, $datahash;
2711	}
2712
2713	# This adds a detection to the above structure.
2714	# $_[0]: chip driver
2715	# $_[1]: reference to data hash
2716	sub add_isa_to_chips_detected
2717	{
2718	my ($chipdriver, $datahash) = @_;
2719	my ($i, $new_detected_ref, $detected_ref);
2720
2721	# First determine where the hash has to be added.
2722	$chips_detected{$chipdriver} = []
2723	unless exists $chips_detected{$chipdriver};
2724	$new_detected_ref = $chips_detected{$chipdriver};
2725
2726	# Find out whether our new entry should go into the detected list
2727	# or not. We only compare main isa_addr here, of course.
2728	foreach $detected_ref (values %chips_detected) {
2729	for ($i = 0; $i < @{$detected_ref}; $i++) {
2730	if (exists $detected_ref->[$i]->{isa_addr} and
2731	exists $datahash->{isa_addr} and
2732	$detected_ref->[$i]->{isa_addr} == $datahash->{isa_addr}) {
2733	if ($detected_ref->[$i]->{conf} < $datahash->{conf}) {
2734	splice @$detected_ref, $i, 1;
2735	push @$new_detected_ref, $datahash;
2736	}
2737	return;
2738	}
2739	}
2740	}
2741
2742	# Not found? OK, put it in the detected list
2743	push @$new_detected_ref, $datahash;
2744	}
2745
2746	# $_[0]: reference to an array of chips which may be aliases of each other
2747	sub find_aliases
2748	{
2749	my $detected = shift;
2750	my ($isa, $i2c, $dev, $alias_detect, $is_alias);
2751
2752	for ($isa = 0; $isa < @{$detected}; $isa++) {
2753	# Look for chips with an ISA address but no I2C address
2754	next unless defined $detected->[$isa];
2755	next unless $detected->[$isa]->{isa_addr};
2756	next if defined $detected->[$isa]->{i2c_addr};
2757	# Additionally, the chip must possibly have I2C aliases
2758	next unless defined $detected->[$isa]->{alias_detect};
2759
2760	for ($i2c = 0; $i2c < @{$detected}; $i2c++) {
2761	# Look for chips with an I2C address but no ISA address
2762	next unless defined $detected->[$i2c];
2763	next unless defined $detected->[$i2c]->{i2c_addr};
2764	next if $detected->[$i2c]->{isa_addr};
2765	# Additionally, it must have the same chip name
2766	next unless $detected->[$i2c]->{chipname} eq
2767	$detected->[$isa]->{chipname};
2768
2769	# We have potential aliases, check if they actually are
2770	$dev = $dev_i2c.$detected->[$i2c]->{i2c_devnr};
2771	open(local *FILE, $dev) or
2772	print("Can't open $dev\n"),
2773	next;
2774	binmode(FILE);
2775	i2c_set_slave_addr(\*FILE, $detected->[$i2c]->{i2c_addr}) or
2776	print("Can't set I2C address for $dev\n"),
2777	next;
2778
2779	initialize_ioports();
2780	$alias_detect = $detected->[$isa]->{alias_detect};
2781	$is_alias = &$alias_detect($detected->[$isa]->{isa_addr},
2782	\*FILE,
2783	$detected->[$i2c]->{i2c_addr});
2784	close(FILE);
2785	close_ioports();
2786
2787	next unless $is_alias;
2788	# This is an alias: copy the I2C data into the ISA
2789	# entry, then discard the I2C entry
2790	$detected->[$isa]->{i2c_devnr} = $detected->[$i2c]->{i2c_devnr};
2791	$detected->[$isa]->{i2c_addr} = $detected->[$i2c]->{i2c_addr};
2792	$detected->[$isa]->{i2c_sub_addr} = $detected->[$i2c]->{i2c_sub_addr};
2793	undef $detected->[$i2c];
2794	last;
2795	}
2796	}
2797
2798	# The loops above may have made the chip list sparse, make it
2799	# compact again
2800	for ($isa = 0; $isa < @{$detected}; ) {
2801	if (defined($detected->[$isa])) {
2802	$isa++;
2803	} else {
2804	splice @{$detected}, $isa, 1;
2805	}
2806	}
2807	}
2808
2809	# From the list of known I2C/SMBus devices, build a list of I2C addresses
2810	# which are worth probing. There's no point in probing an address for which
2811	# we don't know a single device, and probing some addresses has caused
2812	# random trouble in the past.
2813	sub i2c_addresses_to_scan
2814	{
2815	my @used;
2816	my @addresses;
2817	my $addr;
2818
2819	foreach my $chip (@chip_ids) {
2820	next unless defined $chip->{i2c_addrs};
2821	foreach $addr (@{$chip->{i2c_addrs}}) {
2822	$used[$addr]++;
2823	}
2824	}
2825
2826	for ($addr = 0x03; $addr <= 0x77; $addr++) {
2827	push @addresses, $addr if $used[$addr];
2828	}
2829	return \@addresses;
2830	}
2831
2832	# $_[0]: The number of the adapter to scan
2833	# $_[1]: Address
2834	sub add_busy_i2c_address
2835	{
2836	my ($adapter_nr, $addr) = @_;
2837	# If the address is busy, we can normally find out which driver
2838	# requested it (if the kernel is recent enough, at least 2.6.16 and
2839	# later are known to work), and we assume it is the right one.
2840	my ($device, $driver, $new_hash);
2841
2842	$device = sprintf("$sysfs_root/bus/i2c/devices/\%d-\%04x",
2843	$adapter_nr, $addr);
2844	$driver = sysfs_device_driver($device);
2845
2846	if (!defined($driver)) {
2847	printf("Client at address 0x%02x can not be probed - ".
2848	"unload all client drivers first!\n", $addr);
2849	return;
2850	}
2851
2852	$new_hash = {
2853	conf => 6, # Arbitrary confidence
2854	i2c_addr => $addr,
2855	chipname => sysfs_device_attribute($device, "name")
2856	\|\| "unknown",
2857	i2c_devnr => $adapter_nr,
2858	};
2859
2860	printf "Client found at address 0x\%02x\n", $addr;
2861	printf "Handled by driver `\%s' (already loaded), chip type `\%s'\n",
2862	$driver, $new_hash->{chipname};
2863
2864	# Only add it to the list if this is something we would have detected,
2865	# else we end up with random i2c chip drivers listed (for example
2866	# media/video drivers.)
2867	if (exists $modules_supported{$driver}) {
2868	add_i2c_to_chips_detected($driver, $new_hash);
2869	} else {
2870	print " (note: this is probably NOT a sensor chip!)\n";
2871	}
2872	}
2873
2874	# $_[0]: The number of the adapter to scan
2875	# $_[1]: Address
2876	# $_[2]: Chip being probed
2877	sub probe_free_i2c_address
2878	{
2879	my ($adapter_nr, $addr, $chip) = @_;
2880	my ($conf, @other_addr, $new_hash);
2881
2882	printf("\%-60s", sprintf("Probing for `\%s'... ", $chip->{name}));
2883	if (($conf, @other_addr) = &{$chip->{i2c_detect}} (\*FILE, $addr)) {
2884	if ($chip->{driver} eq "not-a-sensor") {
2885	print "Yes\n",
2886	" (confidence $conf, not a hardware monitoring chip";
2887	} else {
2888	print "Success!\n",
2889	" (confidence $conf, driver `$chip->{driver}'";
2890	}
2891	if (@other_addr) {
2892	print ", other addresses:";
2893	@other_addr = sort @other_addr;
2894	foreach my $other_addr (@other_addr) {
2895	printf(" 0x%02x", $other_addr);
2896	}
2897	}
2898	print ")\n";
2899
2900	return if ($chip->{driver} eq "not-a-sensor"
2901	\|\| $chip->{driver} eq "use-isa-instead");
2902
2903	$new_hash = {
2904	conf => $conf,
2905	i2c_addr => $addr,
2906	chipname => $chip->{name},
2907	i2c_devnr => $adapter_nr,
2908	};
2909	if (@other_addr) {
2910	my @other_addr_copy = @other_addr;
2911	$new_hash->{i2c_sub_addrs} = \@other_addr_copy;
2912	}
2913	add_i2c_to_chips_detected($chip->{driver}, $new_hash);
2914	} else {
2915	print "No\n";
2916	}
2917	}
2918
2919	# $_[0]: The number of the adapter to check
2920	# Returns: PCI class of the adapter if available, 0 if not
2921	sub get_i2c_adapter_class
2922	{
2923	my ($adapter_nr) = @_;
2924	my ($adapter, $subsystem, $class);
2925
2926	$adapter = "$sysfs_root/class/i2c-adapter/i2c-$adapter_nr";
2927	$subsystem = sysfs_device_subsystem("$adapter/device");
2928	return 0 unless defined $subsystem && $subsystem eq "pci";
2929
2930	$class = sysfs_device_attribute("$adapter/device", "class");
2931	return 0 unless defined $class;
2932	$class = oct($class) if $class =~ /^0/;
2933	return $class >> 8;
2934	}
2935
2936	# $_[0]: The number of the adapter to scan
2937	sub scan_i2c_adapter
2938	{
2939	my ($adapter_nr, $smbus_default) = @_;
2940	my ($funcs, $chip, $addr, $class, $default, $input, @not_to_scan);
2941
2942	$class = get_i2c_adapter_class($adapter_nr);
2943	if (($class & 0xff00) == 0x0400) {
2944	# Do not probe adapters on PCI multimedia cards by default
2945	$default = 0;
2946	} elsif ($class == 0x0c01 \|\| $class == 0x0c05
2947	\|\| find_i2c_adapter_driver($i2c_adapters[$adapter_nr]->{name})) {
2948	$default = $smbus_default;
2949	} else {
2950	$default = 1;
2951	}
2952
2953	printf "Next adapter: $i2c_adapters[$adapter_nr]->{name} (i2c-$adapter_nr)\n".
2954	"Do you want to scan it? (\%s/selectively): ",
2955	$default ? "YES/no" : "yes/NO";
2956
2957	$input = <STDIN>;
2958	if ($input =~ /^\s*n/i
2959	\|\| (!$default && $input !~ /^\s*[ys]/i)) {
2960	print "\n";
2961	return;
2962	}
2963
2964	if ($input =~ /^\s*s/i) {
2965	print "Please enter one or more addresses not to scan. Separate them with commas.\n",
2966	"You can specify a range by using dashes. Example: 0x58-0x5f,0x69.\n",
2967	"Addresses: ";
2968	$input = <STDIN>;
2969	chomp($input);
2970	@not_to_scan = parse_not_to_scan(0x03, 0x77, $input);
2971	}
2972
2973	open(local *FILE, "$dev_i2c$adapter_nr") or
2974	(print "Can't open $dev_i2c$adapter_nr\n"), return;
2975	binmode(FILE);
2976
2977	# Can we probe this adapter?
2978	$funcs = i2c_get_funcs(\*FILE);
2979	if ($funcs < 0) {
2980	print "Adapter failed to provide its functionalities, skipping.\n";
2981	return;
2982	}
2983	if (!($funcs & (I2C_FUNC_SMBUS_QUICK \| I2C_FUNC_SMBUS_READ_BYTE))) {
2984	print "Adapter cannot be probed, skipping.\n";
2985	return;
2986	}
2987	if (~$funcs & (I2C_FUNC_SMBUS_QUICK \| I2C_FUNC_SMBUS_READ_BYTE)) {
2988	print "Adapter doesn't support all probing functions.\n",
2989	"Some addresses won't be probed.\n";
2990	}
2991
2992	# Now scan each address in turn
2993	foreach $addr (@{$i2c_addresses_to_scan}) {
2994	# As the not_to_scan list is sorted, we can check it fast
2995	shift @not_to_scan # User skipped an address which we didn't intend to probe anyway
2996	while (@not_to_scan and $not_to_scan[0] < $addr);
2997	if (@not_to_scan and $not_to_scan[0] == $addr) {
2998	shift @not_to_scan;
2999	next;
3000	}
3001
3002	if (!i2c_set_slave_addr(\*FILE, $addr)) {
3003	add_busy_i2c_address($adapter_nr, $addr);
3004	next;
3005	}
3006
3007	next unless i2c_probe(\*FILE, $addr, $funcs);
3008	printf "Client found at address 0x%02x\n", $addr;
3009	if (!i2c_safety_check(\*FILE)) {
3010	print "Seems to be a 1-register-only device, skipping.\n";
3011	next;
3012	}
3013
3014	$\| = 1;
3015	foreach $chip (@chip_ids, @non_hwmon_chip_ids) {
3016	next unless exists $chip->{i2c_addrs}
3017	&& contains($addr, @{$chip->{i2c_addrs}});
3018	probe_free_i2c_address($adapter_nr, $addr, $chip);
3019	}
3020	$\| = 0;
3021	}
3022	print "\n";
3023	}
3024
3025	sub scan_isa_bus
3026	{
3027	my $chip_list_ref = shift;
3028	my ($chip, $addr, $conf);
3029
3030	$\| = 1;
3031	foreach $chip (@{$chip_list_ref}) {
3032	next if not exists $chip->{isa_addrs} or not exists $chip->{isa_detect};
3033	foreach $addr (@{$chip->{isa_addrs}}) {
3034	printf("\%-60s", sprintf("Probing for `\%s'\ at 0x\%x... ",
3035	$chip->{name}, $addr));
3036	$conf = &{$chip->{isa_detect}} ($addr);
3037	print("No\n"), next if not defined $conf;
3038	print "Success!\n";
3039	printf " (confidence %d, driver `%s')\n", $conf, $chip->{driver};
3040	my $new_hash = {
3041	conf => $conf,
3042	isa_addr => $addr,
3043	chipname => $chip->{name},
3044	alias_detect => $chip->{alias_detect},
3045	};
3046	add_isa_to_chips_detected($chip->{driver}, $new_hash);
3047	}
3048	}
3049	$\| = 0;
3050	}
3051
3052	use vars qw(%superio);
3053
3054	# The following are taken from the PNP ISA spec (so it's supposed
3055	# to be common to all Super I/O chips):
3056	# devidreg: The device ID register(s)
3057	# logdevreg: The logical device register
3058	# actreg: The activation register within the logical device
3059	# actmask: The activation bit in the activation register
3060	# basereg: The I/O base register within the logical device
3061	%superio = (
3062	devidreg => 0x20,
3063	logdevreg => 0x07,
3064	actreg => 0x30,
3065	actmask => 0x01,
3066	basereg => 0x60,
3067	);
3068
3069	sub exit_superio
3070	{
3071	my ($addrreg, $datareg) = @_;
3072
3073	# Some chips (SMSC, Winbond) want this
3074	outb($addrreg, 0xaa);
3075
3076	# Return to "Wait For Key" state (PNP-ISA spec)
3077	outb($addrreg, 0x02);
3078	outb($datareg, 0x02);
3079	}
3080
3081	# Guess if an unknown Super-I/O chip has sensors
3082	sub guess_superio_ld
3083	{
3084	my ($addrreg, $datareg, $typical_addr) = @_;
3085	my ($oldldn, $ldn, $addr);
3086
3087	# Save logical device number
3088	outb($addrreg, $superio{logdevreg});
3089	$oldldn = inb($datareg);
3090
3091	for ($ldn = 0; $ldn < 16; $ldn++) {
3092	# Select logical device
3093	outb($addrreg, $superio{logdevreg});
3094	outb($datareg, $ldn);
3095
3096	# Read base I/O address
3097	outb($addrreg, $superio{basereg});
3098	$addr = inb($datareg) << 8;
3099	outb($addrreg, $superio{basereg} + 1);
3100	$addr \|= inb($datareg);
3101	next unless ($addr & 0xfff8) == $typical_addr;
3102
3103	printf " (logical device \%X has address 0x\%x, could be sensors)\n",
3104	$ldn, $addr;
3105	last;
3106	}
3107
3108	# Be nice, restore original logical device
3109	outb($addrreg, $superio{logdevreg});
3110	outb($datareg, $oldldn);
3111	}
3112
3113	# Returns: features bitmask if device added to chips_detected, 0 if not
3114	sub probe_superio
3115	{
3116	my ($addrreg, $datareg, $chip) = @_;
3117	my ($val, $addr);
3118
3119	printf "\%-60s", "Found `$chip->{name}'";
3120
3121	# Does it have hardware monitoring capabilities?
3122	if (!exists $chip->{driver}) {
3123	print "\n (no information available)\n";
3124	return 0;
3125	}
3126	if ($chip->{driver} eq "not-a-sensor") {
3127	print "\n (no hardware monitoring capabilities)\n";
3128	return 0;
3129	}
3130	if ($chip->{driver} eq "via-smbus-only") {
3131	print "\n (hardware monitoring capabilities accessible via SMBus only)\n";
3132	return FEAT_SMBUS;
3133	}
3134
3135	# Switch to the sensor logical device
3136	outb($addrreg, $superio{logdevreg});
3137	outb($datareg, $chip->{logdev});
3138
3139	# Check the activation register
3140	outb($addrreg, $superio{actreg});
3141	$val = inb($datareg);
3142	if (!($val & $superio{actmask})) {
3143	print "\n (but not activated)\n";
3144	return 0;
3145	}
3146
3147	# Get the IO base register
3148	outb($addrreg, $superio{basereg});
3149	$addr = inb($datareg);
3150	outb($addrreg, $superio{basereg} + 1);
3151	$addr = ($addr << 8) \| inb($datareg);
3152	if ($addr == 0) {
3153	print "\n (but no address specified)\n";
3154	return 0;
3155	}
3156	print "Success!\n";
3157	printf " (address 0x\%x, driver `%s')\n", $addr, $chip->{driver};
3158	my $new_hash = {
3159	conf => 9,
3160	isa_addr => $addr,
3161	chipname => $chip->{name}
3162	};
3163	add_isa_to_chips_detected($chip->{driver}, $new_hash);
3164	return $chip->{features};
3165	}
3166
3167	# Detection routine for non-standard SMSC Super I/O chips
3168	# $_[0]: Super I/O LPC config/index port
3169	# $_[1]: Super I/O LPC data port
3170	# $_[2]: Reference to array of non-standard chips
3171	# Return values: 1 if non-standard chip found, 0 otherwise
3172	sub smsc_ns_detect_superio
3173	{
3174	my ($addrreg, $datareg, $ns_chips) = @_;
3175	my ($val, $chip);
3176
3177	# read alternate device ID register
3178	outb($addrreg, 0x0d);
3179	$val = inb($datareg);
3180	return 0 if $val == 0x00 \|\| $val == 0xff;
3181
3182	print "Yes\n";
3183
3184	foreach $chip (@{$ns_chips}) {
3185	if ($chip->{devid} == $val) {
3186	probe_superio($addrreg, $datareg, $chip);
3187	return 1;
3188	}
3189	}
3190
3191	printf("Found unknown non-standard chip with ID 0x%02x\n", $val);
3192	return 1;
3193	}
3194
3195	# Returns: features supported by the device added, if any
3196	sub scan_superio
3197	{
3198	my ($addrreg, $datareg) = @_;
3199	my ($val, $found);
3200	my $features = 0;
3201
3202	printf("Probing for Super-I/O at 0x\%x/0x\%x\n", $addrreg, $datareg);
3203
3204	$\| = 1;
3205	# reset state to avoid false positives
3206	exit_superio($addrreg, $datareg);
3207	foreach my $family (@superio_ids) {
3208	printf("\%-60s", "Trying family `$family->{family}'... ");
3209	# write the password
3210	foreach $val (@{$family->{enter}->{$addrreg}}) {
3211	outb($addrreg, $val);
3212	}
3213	# call the non-standard detection routine first if it exists
3214	if (defined($family->{ns_detect}) &&
3215	&{$family->{ns_detect}}($addrreg, $datareg, $family->{ns_chips})) {
3216	last;
3217	}
3218
3219	# did it work?
3220	outb($addrreg, $superio{devidreg});
3221	$val = inb($datareg);
3222	outb($addrreg, $superio{devidreg} + 1);
3223	$val = ($val << 8) \| inb($datareg);
3224	if ($val == 0x0000 \|\| $val == 0xffff) {
3225	print "No\n";
3226	next;
3227	}
3228	print "Yes\n";
3229
3230	$found = 0;
3231	foreach my $chip (@{$family->{chips}}) {
3232	if (($chip->{devid} > 0xff &&
3233	($val & ($chip->{devid_mask} \|\| 0xffff)) == $chip->{devid})
3234	\|\| ($chip->{devid} <= 0xff &&
3235	($val >> 8) == $chip->{devid})) {
3236	$features \|= probe_superio($addrreg, $datareg, $chip);
3237	$found++;
3238	}
3239	}
3240
3241	if (!$found) {
3242	printf("Found unknown chip with ID 0x%04x\n", $val);
3243	# Guess if a logical device could correspond to sensors
3244	guess_superio_ld($addrreg, $datareg, $family->{guess})
3245	if defined $family->{guess};
3246	}
3247	last;
3248	}
3249	exit_superio($addrreg, $datareg);
3250	$\| = 0;
3251	return $features;
3252	}
3253
3254	sub scan_cpu
3255	{
3256	my $entry = shift;
3257	my $confidence;
3258
3259	printf("\%-60s", "$entry->{name}... ");
3260	if (defined ($confidence = $entry->{detect}())) {
3261	print "Success!\n";
3262	printf " (driver `%s')\n", $entry->{driver};
3263	my $new_hash = {
3264	conf => $confidence,
3265	chipname => $entry->{name},
3266	};
3267	add_isa_to_chips_detected($entry->{driver}, $new_hash);
3268	} else {
3269	print "No\n";
3270	}
3271	}
3272
3273	##################
3274	# CHIP DETECTION #
3275	##################
3276
3277	# This routine allows you to dynamically update the chip detection list.
3278	# The most common use is to allow for different chip to driver mappings
3279	# based on different linux kernels
3280	sub chip_special_cases
3281	{
3282	# Some chip to driver mappings depend on the environment
3283	foreach my $chip (@chip_ids) {
3284	if (ref($chip->{driver}) eq 'CODE') {
3285	$chip->{driver} = $chip->{driver}->();
3286	}
3287	}
3288
3289	# Also fill the fake driver name of non-hwmon chips
3290	foreach my $chip (@non_hwmon_chip_ids) {
3291	$chip->{driver} = "not-a-sensor";
3292	}
3293	}
3294
3295	# Each function returns a confidence value. The higher this value, the more
3296	# sure we are about this chip. This may help overrule false positives,
3297	# although we also attempt to prevent false positives in the first place.
3298
3299	# Each function returns a list. The first element is the confidence value;
3300	# Each element after it is an SMBus address. In this way, we can detect
3301	# chips with several SMBus addresses. The SMBus address for which the
3302	# function was called is never returned.
3303
3304	# All I2C detection functions below take at least 2 parameters:
3305	# $_[0]: Reference to the file descriptor to access the chip
3306	# $_[1]: Address
3307	# Some of these functions which can detect more than one type of device,
3308	# take a third parameter:
3309	# $_[2]: Chip to detect
3310
3311	# Registers used: 0x58
3312	sub mtp008_detect
3313	{
3314	my ($file, $addr) = @_;
3315	return if i2c_smbus_read_byte_data($file, 0x58) != 0xac;
3316	return 3;
3317	}
3318
3319	# Chip to detect: 0 = LM78, 2 = LM79
3320	# Registers used:
3321	# 0x40: Configuration
3322	# 0x48: Full I2C Address
3323	# 0x49: Device ID
3324	sub lm78_detect
3325	{
3326	my ($file, $addr, $chip) = @_;
3327	my $reg;
3328
3329	return unless i2c_smbus_read_byte_data($file, 0x48) == $addr;
3330	return unless (i2c_smbus_read_byte_data($file, 0x40) & 0x80) == 0x00;
3331
3332	$reg = i2c_smbus_read_byte_data($file, 0x49);
3333	return if $chip == 0 && ($reg != 0x00 && $reg != 0x20 && $reg != 0x40);
3334	return if $chip == 2 && ($reg & 0xfe) != 0xc0;
3335
3336	# Explicitly prevent misdetection of Winbond chips
3337	$reg = i2c_smbus_read_byte_data($file, 0x4f);
3338	return if $reg == 0xa3 \|\| $reg == 0x5c;
3339
3340	return 6;
3341	}
3342
3343	# Chip to detect: 0 = LM75, 1 = DS75
3344	# Registers used:
3345	# 0x00: Temperature
3346	# 0x01: Configuration
3347	# 0x02: Hysteresis
3348	# 0x03: Overtemperature Shutdown
3349	# 0x04-0x07: No registers
3350	# The first detection step is based on the fact that the LM75 has only
3351	# four registers, and cycles addresses over 8-byte boundaries. We use the
3352	# 0x04-0x07 addresses (unused) to improve the reliability. These are not
3353	# real registers and will always return the last returned value. This isn't
3354	# documented.
3355	# Note that register 0x00 may change, so we can't use the modulo trick on it.
3356	# The DS75 is a bit different, it doesn't cycle over 8-byte boundaries, and
3357	# all register addresses from 0x04 to 0x0f behave like 0x04-0x07 do for
3358	# the LM75.
3359	# Not all devices enjoy SMBus read word transactions, so we use read byte
3360	# transactions even for the 16-bit registers. The low bits aren't very
3361	# useful for detection anyway.
3362	sub lm75_detect
3363	{
3364	my ($file, $addr, $chip) = @_;
3365	my $i;
3366	my $cur = i2c_smbus_read_byte_data($file, 0x00);
3367	my $conf = i2c_smbus_read_byte_data($file, 0x01);
3368
3369	my $hyst = i2c_smbus_read_byte_data($file, 0x02, NO_CACHE);
3370	my $maxreg = $chip == 1 ? 0x0f : 0x07;
3371	for $i (0x04 .. $maxreg) {
3372	return if i2c_smbus_read_byte_data($file, $i, NO_CACHE) != $hyst;
3373	}
3374
3375	my $os = i2c_smbus_read_byte_data($file, 0x03, NO_CACHE);
3376	for $i (0x04 .. $maxreg) {
3377	return if i2c_smbus_read_byte_data($file, $i, NO_CACHE) != $os;
3378	}
3379
3380	if ($chip == 0) {
3381	for ($i = 8; $i <= 248; $i += 40) {
3382	return if i2c_smbus_read_byte_data($file, $i + 0x01) != $conf
3383	or i2c_smbus_read_byte_data($file, $i + 0x02) != $hyst
3384	or i2c_smbus_read_byte_data($file, $i + 0x03) != $os;
3385	}
3386	}
3387
3388	# All registers hold the same value, obviously a misdetection
3389	return if $conf == $cur and $cur == $hyst and $cur == $os;
3390
3391	# Unused bits
3392	return if $chip == 0 and ($conf & 0xe0);
3393	return if $chip == 1 and ($conf & 0x80);
3394
3395	# Most probable value ranges
3396	return 6 if $cur <= 100 and ($hyst >= 10 && $hyst <= 125)
3397	and ($os >= 20 && $os <= 127) and $hyst < $os;
3398	return 3;
3399	}
3400
3401	# Registers used:
3402	# 0x00: Temperature
3403	# 0x01: Configuration
3404	# 0x02: Hysteresis
3405	# 0x03: Overtemperature Shutdown
3406	# 0x04: Low limit
3407	# 0x05: High limit
3408	# 0x06-0x07: No registers
3409	# The first detection step is based on the fact that the LM77 has only
3410	# six registers, and cycles addresses over 8-byte boundaries. We use the
3411	# 0x06-0x07 addresses (unused) to improve the reliability. These are not
3412	# real registers and will always return the last returned value. This isn't
3413	# documented.
3414	# Note that register 0x00 may change, so we can't use the modulo trick on it.
3415	# Not all devices enjoy SMBus read word transactions, so we use read byte
3416	# transactions even for the 16-bit registers at first. We only use read word
3417	# transactions in the end when we are already almost certain that we have an
3418	# LM77 chip.
3419	sub lm77_detect
3420	{
3421	my ($file, $addr) = @_;
3422	my $i;
3423	my $cur = i2c_smbus_read_byte_data($file, 0x00);
3424	my $conf = i2c_smbus_read_byte_data($file, 0x01);
3425	my $hyst = i2c_smbus_read_byte_data($file, 0x02);
3426	my $os = i2c_smbus_read_byte_data($file, 0x03);
3427
3428	my $low = i2c_smbus_read_byte_data($file, 0x04, NO_CACHE);
3429	return if i2c_smbus_read_byte_data($file, 0x06, NO_CACHE) != $low;
3430	return if i2c_smbus_read_byte_data($file, 0x07, NO_CACHE) != $low;
3431
3432	my $high = i2c_smbus_read_byte_data($file, 0x05, NO_CACHE);
3433	return if i2c_smbus_read_byte_data($file, 0x06, NO_CACHE) != $high;
3434	return if i2c_smbus_read_byte_data($file, 0x07, NO_CACHE) != $high;
3435
3436	for ($i = 8; $i <= 248; $i += 40) {
3437	return if i2c_smbus_read_byte_data($file, $i + 0x01) != $conf;
3438	return if i2c_smbus_read_byte_data($file, $i + 0x02) != $hyst;
3439	return if i2c_smbus_read_byte_data($file, $i + 0x03) != $os;
3440	return if i2c_smbus_read_byte_data($file, $i + 0x04) != $low;
3441	return if i2c_smbus_read_byte_data($file, $i + 0x05) != $high;
3442	}
3443
3444	# All registers hold the same value, obviously a misdetection
3445	return if $conf == $cur and $cur == $hyst
3446	and $cur == $os and $cur == $low and $cur == $high;
3447
3448	# Unused bits
3449	return if ($conf & 0xe0)
3450	or (($cur >> 4) != 0 && ($cur >> 4) != 0xf)
3451	or (($hyst >> 4) != 0 && ($hyst >> 4) != 0xf)
3452	or (($os >> 4) != 0 && ($os >> 4) != 0xf)
3453	or (($low >> 4) != 0 && ($low >> 4) != 0xf)
3454	or (($high >> 4) != 0 && ($high >> 4) != 0xf);
3455
3456	# Make sure the chip supports SMBus read word transactions
3457	foreach $i (0x00, 0x02, 0x03, 0x04, 0x05) {
3458	return if i2c_smbus_read_word_data($file, $i) < 0;
3459	}
3460
3461	return 3;
3462	}
3463
3464	# Chip to detect: 0 = LM92, 1 = LM76, 2 = MAX6633/MAX6634/MAX6635
3465	# Registers used:
3466	# 0x01: Configuration (National Semiconductor only)
3467	# 0x02: Hysteresis
3468	# 0x03: Critical Temp
3469	# 0x04: Low Limit
3470	# 0x05: High Limit
3471	# 0x07: Manufacturer ID (LM92 only)
3472	# One detection step is based on the fact that the LM92 and clones have a
3473	# limited number of registers, which cycle modulo 16 address values.
3474	# Note that register 0x00 may change, so we can't use the modulo trick on it.
3475	# Not all devices enjoy SMBus read word transactions, so we use read byte
3476	# transactions even for the 16-bit registers at first. We only use read
3477	# word transactions in the end when we are already almost certain that we
3478	# have an LM92 chip or compatible.
3479	sub lm92_detect
3480	{
3481	my ($file, $addr, $chip) = @_;
3482
3483	my $conf = i2c_smbus_read_byte_data($file, 0x01);
3484	my $hyst = i2c_smbus_read_byte_data($file, 0x02);
3485	my $crit = i2c_smbus_read_byte_data($file, 0x03);
3486	my $low = i2c_smbus_read_byte_data($file, 0x04);
3487	my $high = i2c_smbus_read_byte_data($file, 0x05);
3488
3489	return if $conf == 0 and $hyst == 0 and $crit == 0
3490	and $low == 0 and $high == 0;
3491
3492	# Unused bits
3493	return if ($chip == 0 \|\| $chip == 1)
3494	and ($conf & 0xE0);
3495
3496	for (my $i = 0; $i <= 240; $i += 16) {
3497	return if i2c_smbus_read_byte_data($file, $i + 0x01) != $conf;
3498	return if i2c_smbus_read_byte_data($file, $i + 0x02) != $hyst;
3499	return if i2c_smbus_read_byte_data($file, $i + 0x03) != $crit;
3500	return if i2c_smbus_read_byte_data($file, $i + 0x04) != $low;
3501	return if i2c_smbus_read_byte_data($file, $i + 0x05) != $high;
3502	}
3503
3504	return if $chip == 0
3505	and i2c_smbus_read_word_data($file, 0x07) != 0x0180;
3506
3507	# Make sure the chip supports SMBus read word transactions
3508	$hyst = i2c_smbus_read_word_data($file, 0x02);
3509	return if $hyst < 0;
3510	$crit = i2c_smbus_read_word_data($file, 0x03);
3511	return if $crit < 0;
3512	$low = i2c_smbus_read_word_data($file, 0x04);
3513	return if $low < 0;
3514	$high = i2c_smbus_read_word_data($file, 0x05);
3515	return if $high < 0;
3516
3517	foreach my $temp ($hyst, $crit, $low, $high) {
3518	return if $chip == 2 and ($temp & 0x7F00);
3519	return if $chip != 2 and ($temp & 0x0700);
3520	}
3521
3522	return ($chip == 0) ? 4 : 2;
3523	}
3524
3525	# Registers used:
3526	# 0xAA: Temperature
3527	# 0xA1: High limit
3528	# 0xA2: Low limit
3529	# 0xA8: Counter
3530	# 0xA9: Slope
3531	# 0xAC: Configuration
3532	# Detection is weak. We check if bit 4 (NVB) is clear, because it is
3533	# unlikely to be set (would mean that EEPROM is currently being accessed).
3534	# We also check the value of the counter and slope registers, the datasheet
3535	# doesn't mention the possible values but the conversion formula together
3536	# with experimental evidence suggest possible sanity checks.
3537	# Not all devices enjoy SMBus read word transactions, so we do as much as
3538	# possible with read byte transactions first, and only use read word
3539	# transactions second.
3540	sub ds1621_detect
3541	{
3542	my ($file, $addr) = @_;
3543
3544	my $conf = i2c_smbus_read_byte_data($file, 0xAC);
3545	return if ($conf & 0x10);
3546
3547	my $counter = i2c_smbus_read_byte_data($file, 0xA8);
3548	my $slope = i2c_smbus_read_byte_data($file, 0xA9);
3549	return if ($slope != 0x10 \|\| $counter > $slope);
3550
3551	my $temp = i2c_smbus_read_word_data($file, 0xAA);
3552	return if $temp < 0 \|\| ($temp & 0x0f00);
3553	# On the DS1631, the following two checks are too strict in theory,
3554	# but in practice I very much doubt that anyone will set temperature
3555	# limits not a multiple of 0.5 degrees C.
3556	my $high = i2c_smbus_read_word_data($file, 0xA1);
3557	return if $high < 0 \|\| ($high & 0x7f00);
3558	my $low = i2c_smbus_read_word_data($file, 0xA2);
3559	return if $low < 0 \|\| ($low & 0x7f00);
3560
3561	return if ($temp == 0 && $high == 0 && $low == 0 && $conf == 0);
3562
3563	return 3;
3564	}
3565
3566	# Registers used:
3567	# 0x00: Configuration register
3568	# 0x02: Interrupt state register
3569	# 0x2a-0x3d: Limits registers
3570	# This one is easily misdetected since it doesn't provide identification
3571	# registers. So we have to use some tricks:
3572	# - 6-bit addressing, so limits readings modulo 0x40 should be unchanged
3573	# - positive temperature limits
3574	# - limits order correctness
3575	# Hopefully this should limit the rate of false positives, without increasing
3576	# the rate of false negatives.
3577	# Thanks to Lennard Klein for testing on a non-LM80 chip, which was
3578	# previously misdetected, and isn't anymore. For reference, it scored
3579	# a final confidence of 0, and changing from strict limit comparisons
3580	# to loose comparisons did not change the score.
3581	sub lm80_detect
3582	{
3583	my ($file, $addr) = @_;
3584	my ($i, $reg);
3585
3586	return if (i2c_smbus_read_byte_data($file, 0x00) & 0x80) != 0;
3587	return if (i2c_smbus_read_byte_data($file, 0x02) & 0xc0) != 0;
3588
3589	for ($i = 0x2a; $i <= 0x3d; $i++) {
3590	$reg = i2c_smbus_read_byte_data($file, $i);
3591	return if i2c_smbus_read_byte_data($file, $i+0x40) != $reg;
3592	return if i2c_smbus_read_byte_data($file, $i+0x80) != $reg;
3593	return if i2c_smbus_read_byte_data($file, $i+0xc0) != $reg;
3594	}
3595
3596	# Refine a bit by checking whether limits are in the correct order
3597	# (min<max for voltages, hyst<max for temperature). Since it is still
3598	# possible that the chip is an LM80 with limits not properly set,
3599	# a few "errors" are tolerated.
3600	my $confidence = 0;
3601	for ($i = 0x2a; $i <= 0x3a; $i++) {
3602	$confidence++
3603	if i2c_smbus_read_byte_data($file, $i) < i2c_smbus_read_byte_data($file, $i+1);
3604	}
3605	# hot temp<OS temp
3606	$confidence++
3607	if i2c_smbus_read_byte_data($file, 0x38) < i2c_smbus_read_byte_data($file, 0x3a);
3608
3609	# Negative temperature limits are unlikely.
3610	for ($i = 0x3a; $i <= 0x3d; $i++) {
3611	$confidence++ if (i2c_smbus_read_byte_data($file, $i) & 0x80) == 0;
3612	}
3613
3614	# $confidence is between 0 and 14
3615	$confidence = ($confidence >> 1) - 4;
3616	# $confidence is now between -4 and 3
3617
3618	return unless $confidence > 0;
3619
3620	return $confidence;
3621	}
3622
3623	# Registers used:
3624	# 0x02: Status 1
3625	# 0x03: Configuration
3626	# 0x04: Company ID of LM84
3627	# 0x35: Status 2
3628	# 0xfe: Manufacturer ID
3629	# 0xff: Chip ID / die revision
3630	# We can use the LM84 Company ID register because the LM83 and the LM82 are
3631	# compatible with the LM84.
3632	# The LM83 chip ID is missing from the datasheet and was contributed by
3633	# Magnus Forsstrom: 0x03.
3634	# At least some revisions of the LM82 seem to be repackaged LM83, so they
3635	# have the same chip ID, and temp2/temp4 will be stuck in "OPEN" state.
3636	# For this reason, we don't even try to distinguish between both chips.
3637	# Thanks to Ben Gardner for reporting.
3638	sub lm83_detect
3639	{
3640	my ($file, $addr) = @_;
3641	return if i2c_smbus_read_byte_data($file, 0xfe) != 0x01;
3642	my $chipid = i2c_smbus_read_byte_data($file, 0xff);
3643	return if $chipid != 0x01 && $chipid != 0x03;
3644
3645	my $confidence = 4;
3646	$confidence++
3647	if (i2c_smbus_read_byte_data($file, 0x02) & 0xa8) == 0x00;
3648	$confidence++
3649	if (i2c_smbus_read_byte_data($file, 0x03) & 0x41) == 0x00;
3650	$confidence++
3651	if i2c_smbus_read_byte_data($file, 0x04) == 0x00;
3652	$confidence++
3653	if (i2c_smbus_read_byte_data($file, 0x35) & 0x48) == 0x00;
3654
3655	return $confidence;
3656	}
3657
3658	# Chip to detect: 0 = LM90, 1 = LM89/LM99, 2 = LM86, 3 = ADM1032,
3659	# 4 = MAX6654/MAX6690, 5 = ADT7461,
3660	# 6 = MAX6646/MAX6647/MAX6648/MAX6649/MAX6692,
3661	# 7 = MAX6680/MAX6681, 8 = W83L771W/G, 9 = TMP401, 10 = TMP411
3662	# Registers used:
3663	# 0x03: Configuration
3664	# 0x04: Conversion rate
3665	# 0xfe: Manufacturer ID
3666	# 0xff: Chip ID / die revision
3667	sub lm90_detect
3668	{
3669	my ($file, $addr, $chip) = @_;
3670	my $mid = i2c_smbus_read_byte_data($file, 0xfe);
3671	my $cid = i2c_smbus_read_byte_data($file, 0xff);
3672	my $conf = i2c_smbus_read_byte_data($file, 0x03);
3673	my $rate = i2c_smbus_read_byte_data($file, 0x04);
3674
3675	if ($chip == 0) {
3676	return if ($conf & 0x2a) != 0;
3677	return if $rate > 0x09;
3678	return if $mid != 0x01; # National Semiconductor
3679	return 8 if $cid == 0x21; # LM90
3680	return 6 if ($cid & 0x0f) == 0x20;
3681	}
3682	if ($chip == 1) {
3683	return if ($conf & 0x2a) != 0;
3684	return if $rate > 0x09;
3685	return if $mid != 0x01; # National Semiconductor
3686	return 8 if $addr == 0x4c and $cid == 0x31; # LM89/LM99
3687	return 8 if $addr == 0x4d and $cid == 0x34; # LM89-1/LM99-1
3688	return 6 if ($cid & 0x0f) == 0x30;
3689	}
3690	if ($chip == 2) {
3691	return if ($conf & 0x2a) != 0;
3692	return if $rate > 0x09;
3693	return if $mid != 0x01; # National Semiconductor
3694	return 8 if $cid == 0x11; # LM86
3695	return 6 if ($cid & 0xf0) == 0x10;
3696	}
3697	if ($chip == 3) {
3698	return if ($conf & 0x3f) != 0;
3699	return if $rate > 0x0a;
3700	return if $mid != 0x41; # Analog Devices
3701	return 6 if ($cid & 0xf0) == 0x40; # ADM1032
3702	}
3703	if ($chip == 4) {
3704	return if ($conf & 0x07) != 0;
3705	return if $rate > 0x07;
3706	return if $mid != 0x4d; # Maxim
3707	return 8 if $cid == 0x08; # MAX6654/MAX6690
3708	}
3709	if ($chip == 5) {
3710	return if ($conf & 0x1b) != 0;
3711	return if $rate > 0x0a;
3712	return if $mid != 0x41; # Analog Devices
3713	return 8 if $cid == 0x51; # ADT7461
3714	}
3715	if ($chip == 6) {
3716	return if ($conf & 0x3f) != 0;
3717	return if $rate > 0x07;
3718	return if $mid != 0x4d; # Maxim
3719	return 8 if $cid == 0x59; # MAX6648/MAX6692
3720	}
3721	if ($chip == 7) {
3722	return if ($conf & 0x03) != 0;
3723	return if $rate > 0x07;
3724	return if $mid != 0x4d; # Maxim
3725	return 8 if $cid == 0x01; # MAX6680/MAX6681
3726	}
3727	if ($chip == 8) {
3728	return if ($conf & 0x2a) != 0;
3729	return if $rate > 0x09;
3730	return if $mid != 0x5c; # Winbond
3731	return 6 if $cid == 0x00; # W83L771W/G
3732	}
3733	if ($chip == 9) {
3734	return if ($conf & 0x1B) != 0;
3735	return if $rate > 0x0F;
3736	return if $mid != 0x55; # Texas Instruments
3737	return 8 if $cid == 0x11; # TMP401
3738	}
3739	if ($chip == 10) {
3740	return if ($conf & 0x1B) != 0;
3741	return if $rate > 0x0F;
3742	return if $mid != 0x55; # Texas Instruments
3743	return 6 if ($addr == 0x4c && $cid == 0x12); # TMP411A
3744	return 6 if ($addr == 0x4d && $cid == 0x13); # TMP411B
3745	return 6 if ($addr == 0x4e && $cid == 0x10); # TMP411C
3746	}
3747	return;
3748	}
3749
3750	# Registers used:
3751	# 0x03: Configuration (no low nibble, returns the previous low nibble)
3752	# 0x04: Conversion rate
3753	# 0xfe: Manufacturer ID
3754	# 0xff: no register
3755	sub max6657_detect
3756	{
3757	my ($file, $addr) = @_;
3758	my $mid = i2c_smbus_read_byte_data($file, 0xfe, NO_CACHE);
3759	my $cid = i2c_smbus_read_byte_data($file, 0xff, NO_CACHE);
3760	my $conf = i2c_smbus_read_byte_data($file, 0x03, NO_CACHE);
3761
3762	return if $mid != 0x4d; # Maxim
3763	return if ($conf & 0x1f) != 0x0d;
3764	return if $cid != 0x4d; # No register, returns previous value
3765
3766	my $rate = i2c_smbus_read_byte_data($file, 0x04, NO_CACHE);
3767	return if $rate > 0x09;
3768
3769	$cid = i2c_smbus_read_byte_data($file, 0xff, NO_CACHE);
3770	$conf = i2c_smbus_read_byte_data($file, 0x03, NO_CACHE);
3771	return if ($conf & 0x0f) != $rate;
3772	return if $cid != $rate; # No register, returns previous value
3773
3774	return 5;
3775	}
3776
3777	# Registers used:
3778	# 0x03: Configuration
3779	# 0xfe: Manufacturer ID
3780	# 0xff: Revision ID
3781	sub lm95231_detect
3782	{
3783	my ($file, $addr) = @_;
3784	my $mid = i2c_smbus_read_byte_data($file, 0xfe);
3785	my $cid = i2c_smbus_read_byte_data($file, 0xff);
3786	my $conf = i2c_smbus_read_byte_data($file, 0x03);
3787
3788	return if ($conf & 0x89) != 0;
3789	return if $mid != 0x01; # National Semiconductor
3790	return if $cid != 0xa1; # LM95231
3791
3792	return 6;
3793	}
3794
3795	# Registers used:
3796	# 0x03: Configuration 1
3797	# 0x24: Configuration 2
3798	# 0x3d: Manufacturer ID
3799	# 0x3e: Device ID
3800	sub adt7481_detect
3801	{
3802	my ($file, $addr) = @_;
3803	my $mid = i2c_smbus_read_byte_data($file, 0x3d);
3804	my $cid = i2c_smbus_read_byte_data($file, 0x3e);
3805	my $conf1 = i2c_smbus_read_byte_data($file, 0x03);
3806	my $conf2 = i2c_smbus_read_byte_data($file, 0x24);
3807
3808	return if ($conf1 & 0x10) != 0;
3809	return if ($conf2 & 0x7f) != 0;
3810	return if $mid != 0x41; # Analog Devices
3811	return if $cid != 0x81; # ADT7481
3812
3813	return 6;
3814	}
3815
3816	# Chip to detect: 1 = LM63, 2 = F75363SG, 3 = LM64
3817	# Registers used:
3818	# 0xfe: Manufacturer ID
3819	# 0xff: Chip ID / die revision
3820	# 0x03: Configuration (two or three unused bits)
3821	# 0x16: Alert mask (two or three unused bits)
3822	sub lm63_detect
3823	{
3824	my ($file, $addr, $chip) = @_;
3825
3826	my $mid = i2c_smbus_read_byte_data($file, 0xfe);
3827	my $cid = i2c_smbus_read_byte_data($file, 0xff);
3828	my $conf = i2c_smbus_read_byte_data($file, 0x03);
3829	my $mask = i2c_smbus_read_byte_data($file, 0x16);
3830
3831	if ($chip == 1) {
3832	return if $mid != 0x01 # National Semiconductor
3833	\|\| $cid != 0x41; # LM63
3834	return if ($conf & 0x18) != 0x00
3835	\|\| ($mask & 0xa4) != 0xa4;
3836	} elsif ($chip == 2) {
3837	return if $mid != 0x23 # Fintek
3838	\|\| $cid != 0x20; # F75363SG
3839	return if ($conf & 0x1a) != 0x00
3840	\|\| ($mask & 0x84) != 0x00;
3841	} elsif ($chip == 3) {
3842	return if $mid != 0x01 # National Semiconductor
3843	\|\| $cid != 0x51; # LM64
3844	return if ($conf & 0x18) != 0x00
3845	\|\| ($mask & 0xa4) != 0xa4;
3846	}
3847
3848	return 6;
3849	}
3850
3851	# Registers used:
3852	# 0x02, 0x03: Fan support
3853	# 0x06: Temperature support
3854	# 0x07, 0x08, 0x09: Fan config
3855	# 0x0d: Manufacturer ID
3856	# 0x0e: Chip ID / die revision
3857	sub adm1029_detect
3858	{
3859	my ($file, $addr) = @_;
3860	my $mid = i2c_smbus_read_byte_data($file, 0x0d);
3861	my $cid = i2c_smbus_read_byte_data($file, 0x0e);
3862	my $cfg;
3863
3864	return unless $mid == 0x41; # Analog Devices
3865	return unless ($cid & 0xF0) == 0x00; # ADM1029
3866
3867	# Extra check on unused bits
3868	$cfg = i2c_smbus_read_byte_data($file, 0x02);
3869	return unless $cfg == 0x03;
3870	$cfg = i2c_smbus_read_byte_data($file, 0x06);
3871	return unless ($cfg & 0xF9) == 0x01;
3872	foreach my $reg (0x03, 0x07, 0x08, 0x09) {
3873	$cfg = i2c_smbus_read_byte_data($file, $reg);
3874	return unless ($cfg & 0xFC) == 0x00;
3875	}
3876
3877	return 7;
3878	}
3879
3880	# Chip to detect: 0 = ADM1030, 1 = ADM1031
3881	# Registers used:
3882	# 0x01: Config 2
3883	# 0x03: Status 2
3884	# 0x0d, 0x0e, 0x0f: Temperature offsets
3885	# 0x22: Fan speed config
3886	# 0x3d: Chip ID
3887	# 0x3e: Manufacturer ID
3888	# 0x3f: Die revision
3889	sub adm1031_detect
3890	{
3891	my ($file, $addr, $chip) = @_;
3892	my $mid = i2c_smbus_read_byte_data($file, 0x3e);
3893	my $cid = i2c_smbus_read_byte_data($file, 0x3d);
3894	my $drev = i2c_smbus_read_byte_data($file, 0x3f);
3895	my $conf2 = i2c_smbus_read_byte_data($file, 0x01);
3896	my $stat2 = i2c_smbus_read_byte_data($file, 0x03);
3897	my $fsc = i2c_smbus_read_byte_data($file, 0x22);
3898	my $lto = i2c_smbus_read_byte_data($file, 0x0d);
3899	my $r1to = i2c_smbus_read_byte_data($file, 0x0e);
3900	my $r2to = i2c_smbus_read_byte_data($file, 0x0f);
3901	my $confidence = 3;
3902
3903	if ($chip == 0) {
3904	return if $mid != 0x41; # Analog Devices
3905	return if $cid != 0x30; # ADM1030
3906	$confidence++ if ($drev & 0x70) == 0x00;
3907	$confidence++ if ($conf2 & 0x4A) == 0x00;
3908	$confidence++ if ($stat2 & 0x3F) == 0x00;
3909	$confidence++ if ($fsc & 0xF0) == 0x00;
3910	$confidence++ if ($lto & 0x70) == 0x00;
3911	$confidence++ if ($r1to & 0x70) == 0x00;
3912	return $confidence;
3913	}
3914	if ($chip == 1) {
3915	return if $mid != 0x41; # Analog Devices
3916	return if $cid != 0x31; # ADM1031
3917	$confidence++ if ($drev & 0x70) == 0x00;
3918	$confidence++ if ($lto & 0x70) == 0x00;
3919	$confidence++ if ($r1to & 0x70) == 0x00;
3920	$confidence++ if ($r2to & 0x70) == 0x00;
3921	return $confidence;
3922	}
3923	}
3924
3925	# Chip to detect: 0 = ADM1033, 1 = ADM1034
3926	# Registers used:
3927	# 0x3d: Chip ID
3928	# 0x3e: Manufacturer ID
3929	# 0x3f: Die revision
3930	sub adm1034_detect
3931	{
3932	my ($file, $addr, $chip) = @_;
3933	my $mid = i2c_smbus_read_byte_data($file, 0x3e);
3934	my $cid = i2c_smbus_read_byte_data($file, 0x3d);
3935	my $drev = i2c_smbus_read_byte_data($file, 0x3f);
3936
3937	if ($chip == 0) {
3938	return if $mid != 0x41; # Analog Devices
3939	return if $cid != 0x33; # ADM1033
3940	return if ($drev & 0xf8) != 0x00;
3941	return 6 if $drev == 0x02;
3942	return 4;
3943	}
3944	if ($chip == 1) {
3945	return if $mid != 0x41; # Analog Devices
3946	return if $cid != 0x34; # ADM1034
3947	return if ($drev & 0xf8) != 0x00;
3948	return 6 if $drev == 0x02;
3949	return 4;
3950	}
3951	}
3952
3953	# Chip to detect: 0 = ADT7467/ADT7468, 1 = ADT7476, 2 = ADT7462, 3 = ADT7466,
3954	# 4 = ADT7470
3955	# Registers used:
3956	# 0x3d: Chip ID
3957	# 0x3e: Manufacturer ID
3958	# 0x3f: Die revision
3959	sub adt7467_detect
3960	{
3961	my ($file, $addr, $chip) = @_;
3962	my $mid = i2c_smbus_read_byte_data($file, 0x3e);
3963	my $cid = i2c_smbus_read_byte_data($file, 0x3d);
3964	my $drev = i2c_smbus_read_byte_data($file, 0x3f);
3965
3966	return if $mid != 0x41; # Analog Devices
3967
3968	if ($chip == 0) {
3969	return if $cid != 0x68; # ADT7467
3970	return if ($drev & 0xf0) != 0x70;
3971	return 7 if $drev == 0x71 \|\| $drev == 0x72;
3972	return 5;
3973	}
3974	if ($chip == 1) {
3975	return if $cid != 0x76; # ADT7476
3976	return if ($drev & 0xf0) != 0x60;
3977	return 7 if $drev == 0x69;
3978	return 5;
3979	}
3980	if ($chip == 2) {
3981	return if $cid != 0x62; # ADT7462
3982	return if ($drev & 0xf0) != 0x00;
3983	return 7 if $drev == 0x04;
3984	return 5;
3985	}
3986	if ($chip == 3) {
3987	return if $cid != 0x66; # ADT7466
3988	return if ($drev & 0xf0) != 0x00;
3989	return 7 if $drev == 0x02;
3990	return 5;
3991	}
3992	if ($chip == 4) {
3993	return if $cid != 0x70; # ADT7470
3994	return if ($drev & 0xf0) != 0x00;
3995	return 7 if $drev == 0x00;
3996	return 5;
3997	}
3998	}
3999
4000	# Chip to detect: 0 = ADT7473, 1 = ADT7475
4001	# Registers used:
4002	# 0x3d: Chip ID
4003	# 0x3e: Manufacturer ID
4004	sub adt7473_detect
4005	{
4006	my ($file, $addr, $chip) = @_;
4007	my $mid = i2c_smbus_read_byte_data($file, 0x3e);
4008	my $cid = i2c_smbus_read_byte_data($file, 0x3d);
4009
4010	return if $mid != 0x41; # Analog Devices
4011
4012	return if $chip == 0 && $cid != 0x73; # ADT7473
4013	return if $chip == 1 && $cid != 0x75; # ADT7475
4014	return 5;
4015	}
4016
4017	# Chip to detect: 0 = aSC7512, 1 = aSC7611, 2 = aSC7621
4018	# Registers used:
4019	# 0x3e: Manufacturer ID
4020	# 0x3f: Version
4021	sub andigilog_detect
4022	{
4023	my ($file, $addr, $chip) = @_;
4024	my $mid = i2c_smbus_read_byte_data($file, 0x3e);
4025	my $cid = i2c_smbus_read_byte_data($file, 0x3f);
4026
4027	return if $mid != 0x61; # Andigilog
4028
4029	return if $chip == 0 && $cid != 0x62;
4030	return if $chip == 1 && $cid != 0x69;
4031	return if $chip == 2 && ($cid != 0x6C && $cid != 0x6D);
4032	return 5;
4033	}
4034
4035	# Registers used:
4036	# 0xfe: Manufacturer ID
4037	# 0xff: Die Code
4038	sub andigilog_aSC7511_detect
4039	{
4040	my ($file, $addr) = @_;
4041	my $mid = i2c_smbus_read_byte_data($file, 0xfe);
4042	my $die = i2c_smbus_read_byte_data($file, 0xff);
4043
4044	return if $mid != 0x61; # Andigilog
4045	return if $die != 0x00;
4046	return 3;
4047	}
4048
4049	# Chip to detect: 0 = LM85, 1 = LM96000, 2 = ADM1027, 3 = ADT7463,
4050	# 4 = EMC6D100/101, 5 = EMC6D102, 6 = EMC6D103
4051	# Registers used:
4052	# 0x3e: Vendor register
4053	# 0x3d: Device ID register (Analog Devices only)
4054	# 0x3f: Version/Stepping register
4055	sub lm85_detect
4056	{
4057	my ($file, $addr, $chip) = @_;
4058	my $vendor = i2c_smbus_read_byte_data($file, 0x3e);
4059	my $verstep = i2c_smbus_read_byte_data($file, 0x3f);
4060
4061	if ($chip == 0) {
4062	return if $vendor != 0x01; # National Semiconductor
4063	return if $verstep != 0x60 # LM85 C
4064	&& $verstep != 0x62; # LM85 B
4065	} elsif ($chip == 1) {
4066	return if $vendor != 0x01; # National Semiconductor
4067	return if $verstep != 0x68 # LM96000
4068	&& $verstep != 0x69; # LM96000
4069	} elsif ($chip == 2) {
4070	return if $vendor != 0x41; # Analog Devices
4071	return if $verstep != 0x60; # ADM1027
4072	} elsif ($chip == 3) {
4073	return if $vendor != 0x41; # Analog Devices
4074	return if $verstep != 0x62 # ADT7463
4075	&& $verstep != 0x6a; # ADT7463 C
4076	} elsif ($chip == 4) {
4077	return if $vendor != 0x5c; # SMSC
4078	return if $verstep != 0x60 # EMC6D100/101 A0
4079	&& $verstep != 0x61; # EMC6D100/101 A1
4080	} elsif ($chip == 5) {
4081	return if $vendor != 0x5c; # SMSC
4082	return if $verstep != 0x65; # EMC6D102
4083	} elsif ($chip == 6) {
4084	return if $vendor != 0x5c; # SMSC
4085	return if $verstep != 0x68; # EMC6D103
4086	}
4087
4088	if ($vendor == 0x41) { # Analog Devices
4089	return if i2c_smbus_read_byte_data($file, 0x3d) != 0x27;
4090	return 8;
4091	}
4092	return 7;
4093	}
4094
4095	# Chip to detect: 0 = LM87, 1 = ADM1024
4096	# Registers used:
4097	# 0x3e: Company ID
4098	# 0x3f: Revision
4099	# 0x40: Configuration
4100	sub lm87_detect
4101	{
4102	my ($file, $addr, $chip) = @_;
4103	my $cid = i2c_smbus_read_byte_data($file, 0x3e);
4104	my $rev = i2c_smbus_read_byte_data($file, 0x3f);
4105
4106	if ($chip == 0) {
4107	return if $cid != 0x02; # National Semiconductor
4108	return if ($rev & 0xfc) != 0x04; # LM87
4109	}
4110	if ($chip == 1) {
4111	return if $cid != 0x41; # Analog Devices
4112	return if ($rev & 0xf0) != 0x10; # ADM1024
4113	}
4114
4115	my $cfg = i2c_smbus_read_byte_data($file, 0x40);
4116	return if ($cfg & 0x80) != 0x00;
4117
4118	return 7;
4119	}
4120
4121	# Chip to detect: 0 = W83781D, 1 = W83782D, 2 = W83783S, 3 = W83627HF,
4122	# 4 = AS99127F (rev.1), 5 = AS99127F (rev.2), 6 = ASB100,
4123	# 7 = W83791D, 8 = W83792D, 9 = W83627EHF, 10 = W83627DHG
4124	# Registers used:
4125	# 0x48: Full I2C Address
4126	# 0x4a: I2C addresses of emulated LM75 chips
4127	# 0x4e: Vendor ID byte selection, and bank selection
4128	# 0x4f: Vendor ID
4129	# 0x58: Device ID (only when in bank 0)
4130	# Note: Fails if the W8378xD is not in bank 0!
4131	# Note: Asus chips do not have their I2C address at register 0x48?
4132	# AS99127F rev.1 and ASB100 have 0x00, confirmation wanted for
4133	# AS99127F rev.2.
4134	sub w83781d_detect
4135	{
4136	my ($file, $addr, $chip) = @_;
4137	my ($reg1, $reg2, @res);
4138
4139	return unless (i2c_smbus_read_byte_data($file, 0x48) == $addr)
4140	or ($chip >= 4 && $chip <= 6);
4141
4142	$reg1 = i2c_smbus_read_byte_data($file, 0x4e);
4143	$reg2 = i2c_smbus_read_byte_data($file, 0x4f);
4144	if ($chip == 4) { # Asus AS99127F (rev.1)
4145	return unless (($reg1 & 0x80) == 0x00 and $reg2 == 0xc3) or
4146	(($reg1 & 0x80) == 0x80 and $reg2 == 0x12);
4147	} elsif ($chip == 6) { # Asus ASB100
4148	return unless (($reg1 & 0x80) == 0x00 and $reg2 == 0x94) or
4149	(($reg1 & 0x80) == 0x80 and $reg2 == 0x06);
4150	} else { # Winbond and Asus AS99127F (rev.2)
4151	return unless (($reg1 & 0x80) == 0x00 and $reg2 == 0xa3) or
4152	(($reg1 & 0x80) == 0x80 and $reg2 == 0x5c);
4153	}
4154
4155	return unless ($reg1 & 0x07) == 0x00;
4156
4157	$reg1 = i2c_smbus_read_byte_data($file, 0x58);
4158	return if $chip == 0 and ($reg1 != 0x10 && $reg1 != 0x11);
4159	return if $chip == 1 and $reg1 != 0x30;
4160	return if $chip == 2 and $reg1 != 0x40;
4161	return if $chip == 3 and $reg1 != 0x21;
4162	return if $chip == 4 and $reg1 != 0x31;
4163	return if $chip == 5 and $reg1 != 0x31;
4164	return if $chip == 6 and $reg1 != 0x31;
4165	return if $chip == 7 and $reg1 != 0x71;
4166	return if $chip == 8 and $reg1 != 0x7a;
4167	return if $chip == 9 and ($reg1 != 0x88 && $reg1 != 0xa1);
4168	return if $chip == 10 and $reg1 != 0xc1;
4169	# Default address is 0x2d
4170	@res = ($addr != 0x2d) ? (7) : (8);
4171	return @res if $chip >= 9; # No subclients
4172
4173	$reg1 = i2c_smbus_read_byte_data($file, 0x4a);
4174	push @res, ($reg1 & 0x07) + 0x48 unless $reg1 & 0x08;
4175	push @res, (($reg1 & 0x70) >> 4) + 0x48
4176	unless ($reg1 & 0x80 or $chip == 2);
4177	return @res;
4178	}
4179
4180	# Registers used:
4181	# 0x0b: Full I2C Address
4182	# 0x0c: I2C addresses of emulated LM75 chips
4183	# 0x00: Vendor ID byte selection, and bank selection(Bank 0, 1, 2)
4184	# 0x0d: Vendor ID(Bank 0, 1, 2)
4185	# 0x0e: Device ID(Bank 0, 1, 2)
4186	sub w83793_detect
4187	{
4188	my ($file, $addr) = @_;
4189	my ($bank, $reg, @res);
4190
4191	$bank = i2c_smbus_read_byte_data($file, 0x00);
4192	$reg = i2c_smbus_read_byte_data($file, 0x0d);
4193
4194	return unless (($bank & 0x80) == 0x00 and $reg == 0xa3) or
4195	(($bank & 0x80) == 0x80 and $reg == 0x5c);
4196
4197	$reg = i2c_smbus_read_byte_data($file, 0x0e);
4198	return if $reg != 0x7b;
4199
4200	# If bank 0 is selected, we can do more checks
4201	return 6 unless ($bank & 0x07) == 0;
4202	$reg = i2c_smbus_read_byte_data($file, 0x0b);
4203	return unless ($reg == ($addr << 1));
4204
4205	$reg = i2c_smbus_read_byte_data($file, 0x0c);
4206	@res = (8);
4207	push @res, ($reg & 0x07) + 0x48 unless $reg & 0x08;
4208	push @res, (($reg & 0x70) >> 4) + 0x48 unless $reg & 0x80;
4209	return @res;
4210	}
4211
4212	# Registers used:
4213	# 0x48: Full I2C Address
4214	# 0x4e: Vendor ID byte selection
4215	# 0x4f: Vendor ID
4216	# 0x58: Device ID
4217	# Note that the datasheet was useless and this detection routine
4218	# is based on dumps we received from users. Also, the W83781SD is NOT
4219	# a hardware monitoring chip as far as we know, but we still want to
4220	# detect it so that people won't keep reporting it as an unknown chip
4221	# we should investigate about.
4222	sub w83791sd_detect
4223	{
4224	my ($file, $addr) = @_;
4225	my ($reg1, $reg2);
4226
4227	return unless (i2c_smbus_read_byte_data($file, 0x48) == $addr);
4228
4229	$reg1 = i2c_smbus_read_byte_data($file, 0x4e);
4230	$reg2 = i2c_smbus_read_byte_data($file, 0x4f);
4231	return unless (!($reg1 & 0x80) && $reg2 == 0xa3)
4232	\|\| (($reg1 & 0x80) && $reg2 == 0x5c);
4233
4234	$reg1 = i2c_smbus_read_byte_data($file, 0x58);
4235	return unless $reg1 == 0x72;
4236
4237	return 3;
4238	}
4239
4240	# Registers used:
4241	# 0x4e: Vendor ID high byte
4242	# 0x4f: Vendor ID low byte
4243	# 0x58: Device ID
4244	# Note: The values were given by Alex van Kaam, we don't have datasheets
4245	# to confirm.
4246	sub mozart_detect
4247	{
4248	my ($file, $addr) = @_;
4249	my ($vid, $dev);
4250
4251	$vid = (i2c_smbus_read_byte_data($file, 0x4e) << 8)
4252	+ i2c_smbus_read_byte_data($file, 0x4f);
4253	$dev = i2c_smbus_read_byte_data($file, 0x58);
4254
4255	return unless ($dev == 0x56 && $vid == 0x9436) # ASM58
4256	\|\| ($dev == 0x56 && $vid == 0x9406) # AS2K129R
4257	\|\| ($dev == 0x10 && $vid == 0x5ca3);
4258
4259	return 5;
4260	}
4261
4262	# Chip to detect: 0 = GL518SM, 1 = GL520SM
4263	# Registers used:
4264	# 0x00: Device ID
4265	# 0x01: Revision ID
4266	# 0x03: Configuration
4267	sub gl518sm_detect
4268	{
4269	my ($file, $addr, $chip) = @_;
4270	my $reg;
4271
4272	$reg = i2c_smbus_read_byte_data($file, 0x00);
4273	return if $chip == 0 && $reg != 0x80;
4274	return if $chip == 1 && $reg != 0x20;
4275
4276	return unless (i2c_smbus_read_byte_data($file, 0x03) & 0x80) == 0x00;
4277	$reg = i2c_smbus_read_byte_data($file, 0x01);
4278	return unless $reg == 0x00 or $reg == 0x80;
4279	return 6;
4280	}
4281
4282	# Registers used:
4283	# 0x00: Device ID
4284	# 0x03: Configuration
4285	# Mediocre detection
4286	sub gl525sm_detect
4287	{
4288	my ($file, $addr) = @_;
4289	return unless i2c_smbus_read_byte_data($file, 0x00) == 0x25;
4290	return unless (i2c_smbus_read_byte_data($file, 0x03) & 0x80) == 0x00;
4291	return 5;
4292	}
4293
4294	# Chip to detect: 0 = ADM9240, 1 = DS1780, 2 = LM81
4295	# Registers used:
4296	# 0x3e: Company ID
4297	# 0x40: Configuration
4298	# 0x48: Full I2C Address
4299	sub adm9240_detect
4300	{
4301	my ($file, $addr, $chip) = @_;
4302	my $reg;
4303	$reg = i2c_smbus_read_byte_data($file, 0x3e);
4304	return unless ($chip == 0 and $reg == 0x23) or
4305	($chip == 1 and $reg == 0xda) or
4306	($chip == 2 and $reg == 0x01);
4307	return unless (i2c_smbus_read_byte_data($file, 0x40) & 0x80) == 0x00;
4308	return unless i2c_smbus_read_byte_data($file, 0x48) == $addr;
4309
4310	return 7;
4311	}
4312
4313	# Chip to detect: 0 = ADM1022, 1 = THMC50, 2 = ADM1028, 3 = THMC51
4314	# Registers used:
4315	# 0x3e: Company ID
4316	# 0x3f: Revision
4317	# 0x40: Configuration
4318	sub adm1022_detect
4319	{
4320	my ($file, $addr, $chip) = @_;
4321	my $reg;
4322	$reg = i2c_smbus_read_byte_data($file, 0x3e);
4323	return unless ($chip == 0 and $reg == 0x41) or
4324	($chip == 1 and $reg == 0x49) or
4325	($chip == 2 and $reg == 0x41) or
4326	($chip == 3 and $reg == 0x49);
4327	$reg = i2c_smbus_read_byte_data($file, 0x40);
4328	return if ($reg & 0x10); # Soft Reset always reads 0
4329	return if ($chip != 0 and ($reg & 0x80)); # Reserved on THMC50 and ADM1028
4330	$reg = i2c_smbus_read_byte_data($file, 0x3f) & 0xf0;
4331	return unless ($chip == 0 and $reg == 0xc0) or
4332	($chip == 1 and $reg == 0xc0) or
4333	($chip == 2 and $reg == 0xd0) or
4334	($chip == 3 and $reg == 0xd0);
4335	return 8;
4336	}
4337
4338	# Chip to detect: 0 = ADM1025, 1 = NE1619
4339	# Registers used:
4340	# 0x3e: Company ID
4341	# 0x3f: Revision
4342	# 0x40: Configuration
4343	# 0x41: Status 1
4344	# 0x42: Status 2
4345	sub adm1025_detect
4346	{
4347	my ($file, $addr, $chip) = @_;
4348	my $reg;
4349
4350	$reg = i2c_smbus_read_byte_data($file, 0x3e);
4351	return if ($chip == 0) and ($reg != 0x41);
4352	return if ($chip == 1) and ($reg != 0xA1);
4353
4354	return unless (i2c_smbus_read_byte_data($file, 0x40) & 0x80) == 0x00;
4355	return unless (i2c_smbus_read_byte_data($file, 0x41) & 0xC0) == 0x00;
4356	return unless (i2c_smbus_read_byte_data($file, 0x42) & 0xBC) == 0x00;
4357	return unless (i2c_smbus_read_byte_data($file, 0x3f) & 0xf0) == 0x20;
4358
4359	return 8;
4360	}
4361
4362	# Registers used:
4363	# 0x16: Company ID
4364	# 0x17: Revision
4365	sub adm1026_detect
4366	{
4367	my ($file, $addr) = @_;
4368	my $reg;
4369	$reg = i2c_smbus_read_byte_data($file, 0x16);
4370	return unless ($reg == 0x41);
4371	return unless (i2c_smbus_read_byte_data($file, 0x17) & 0xf0) == 0x40;
4372	return 8;
4373	}
4374
4375	# Chip to detect: 0 = ADM1021, 1 = ADM1021A/ADM1023, 2 = MAX1617, 3 = MAX1617A,
4376	# 4 = THMC10, 5 = LM84, 6 = GL523, 7 = MC1066
4377	# Registers used:
4378	# 0x04: Company ID (LM84 only)
4379	# 0xfe: Company ID (all but LM84 and MAX1617)
4380	# 0xff: Revision (ADM1021, ADM1021A/ADM1023 and MAX1617A)
4381	# 0x02: Status
4382	# 0x03: Configuration
4383	# 0x04: Conversion rate
4384	# 0x00-0x01, 0x05-0x08: Temperatures (MAX1617 and LM84)
4385	# Note: Especially the MAX1617 has very bad detection; we give it a low
4386	# confidence value.
4387	sub adm1021_detect
4388	{
4389	my ($file, $addr, $chip) = @_;
4390	my $man_id = i2c_smbus_read_byte_data($file, 0xfe);
4391	my $rev = i2c_smbus_read_byte_data($file, 0xff);
4392	my $conf = i2c_smbus_read_byte_data($file, 0x03);
4393	my $status = i2c_smbus_read_byte_data($file, 0x02);
4394	my $convrate = i2c_smbus_read_byte_data($file, 0x04);
4395
4396	# Check manufacturer IDs and product revisions when available
4397	return if $chip == 0 and $man_id != 0x41 \|\| ($rev & 0xf0) != 0x00;
4398	return if $chip == 1 and $man_id != 0x41 \|\| ($rev & 0xf0) != 0x30;
4399	return if $chip == 3 and $man_id != 0x4d \|\| $rev != 0x01;
4400	return if $chip == 4 and $man_id != 0x49;
4401	return if $chip == 5 and $convrate != 0x00;
4402	return if $chip == 6 and $man_id != 0x23;
4403	return if $chip == 7 and $man_id != 0x54;
4404
4405	# Check unused bits
4406	if ($chip == 5) { # LM84
4407	return if ($status & 0xab) != 0;
4408	return if ($conf & 0x7f) != 0;
4409	} else {
4410	return if ($status & 0x03) != 0;
4411	return if ($conf & 0x3f) != 0;
4412	return if ($convrate & 0xf8) != 0;
4413	}
4414
4415	# Extra checks for MAX1617 and LM84, since those are often misdetected.
4416	# We verify several assertions (6 for the MAX1617, 4 for the LM84) and
4417	# discard the chip if any fail. Note that these checks are not done
4418	# by the adm1021 driver.
4419	if ($chip == 2 \|\| $chip == 5) {
4420	my $lte = i2c_smbus_read_byte_data($file, 0x00);
4421	my $rte = i2c_smbus_read_byte_data($file, 0x01);
4422	my $lhi = i2c_smbus_read_byte_data($file, 0x05);
4423	my $rhi = i2c_smbus_read_byte_data($file, 0x07);
4424	my $llo = i2c_smbus_read_byte_data($file, 0x06);
4425	my $rlo = i2c_smbus_read_byte_data($file, 0x08);
4426
4427	# If all registers hold the same value, it has to be a misdetection
4428	return if $lte == $rte and $lte == $lhi and $lte == $rhi
4429	and $lte == $llo and $lte == $rlo;
4430
4431	# Negative temperatures
4432	return if ($lte & 0x80) or ($rte & 0x80);
4433	# Negative high limits
4434	return if ($lhi & 0x80) or ($rhi & 0x80);
4435	# Low limits over high limits
4436	if ($chip == 2) {
4437	$llo -= 256 if ($llo & 0x80);
4438	$rlo -= 256 if ($rlo & 0x80);
4439	return if ($llo > $lhi) or ($rlo > $rhi);
4440	}
4441	return 3;
4442	}
4443
4444	return ($chip <= 3) ? 7 : 5;
4445	}
4446
4447	# Chip to detect: 0 = MAX1668, 1 = MAX1805, 2 = MAX1989
4448	# Registers used:
4449	# 0xfe: Company ID
4450	# 0xff: Device ID
4451	sub max1668_detect
4452	{
4453	my ($file, $addr, $chip) = @_;
4454	my $man_id = i2c_smbus_read_byte_data($file, 0xfe);
4455	my $dev_id = i2c_smbus_read_byte_data($file, 0xff);
4456
4457	return if $man_id != 0x4d;
4458	return if $chip == 0 and $dev_id != 0x03;
4459	return if $chip == 1 and $dev_id != 0x05;
4460	return if $chip == 2 and $dev_id != 0x0b;
4461
4462	return 7;
4463	}
4464
4465	# Chip to detect: 0 = MAX1619, 1 = MAX1618
4466	# Registers used:
4467	# 0xfe: Company ID
4468	# 0xff: Device ID
4469	# 0x02: Status
4470	# 0x03: Configuration
4471	# 0x04: Conversion rate
4472	sub max1619_detect
4473	{
4474	my ($file, $addr, $chip) = @_;
4475	my $man_id = i2c_smbus_read_byte_data($file, 0xfe);
4476	my $dev_id = i2c_smbus_read_byte_data($file, 0xff);
4477	my $conf = i2c_smbus_read_byte_data($file, 0x03);
4478	my $status = i2c_smbus_read_byte_data($file, 0x02);
4479	my $convrate = i2c_smbus_read_byte_data($file, 0x04);
4480
4481	return if $man_id != 0x4D; # Maxim
4482
4483	if ($chip == 0) { # MAX1619
4484	return if $dev_id != 0x04
4485	or ($conf & 0x03)
4486	or ($status & 0x61)
4487	or $convrate >= 8;
4488	}
4489	if ($chip == 1) { # MAX1618
4490	return if $dev_id != 0x02
4491	or ($conf & 0x07)
4492	or ($status & 0x63);
4493	}
4494
4495	return 7;
4496	}
4497
4498	# Registers used:
4499	# 0x28: User ID
4500	# 0x29: User ID2
4501	sub ite_overclock_detect
4502	{
4503	my ($file, $addr) = @_;
4504
4505	my $uid1 = i2c_smbus_read_byte_data($file, 0x28);
4506	my $uid2 = i2c_smbus_read_byte_data($file, 0x29);
4507	return if $uid1 != 0x83 \|\| $uid2 != 0x12;
4508
4509	return 6;
4510	}
4511
4512	# Registers used:
4513	# 0x00: Configuration
4514	# 0x48: Full I2C Address
4515	# 0x58: Mfr ID
4516	# 0x5b: Device ID
4517	sub it8712_i2c_detect
4518	{
4519	my ($file, $addr) = @_;
4520	my $reg;
4521	return unless i2c_smbus_read_byte_data($file, 0x48) == $addr;
4522	return unless (i2c_smbus_read_byte_data($file, 0x00) & 0x90) == 0x10;
4523	return unless i2c_smbus_read_byte_data($file, 0x58) == 0x90;
4524	return if i2c_smbus_read_byte_data($file, 0x5b) != 0x12;
4525	return 7 + ($addr == 0x2d);
4526	}
4527
4528	# Registers used:
4529	# 0-63: SPD Data and Checksum
4530	sub eeprom_detect
4531	{
4532	my ($file, $addr) = @_;
4533	my $checksum = 0;
4534
4535	# Check the checksum for validity (works for most DIMMs and RIMMs)
4536	for (my $i = 0; $i <= 62; $i++) {
4537	$checksum += i2c_smbus_read_byte_data($file, $i);
4538	}
4539	$checksum &= 255;
4540
4541	return 8 if $checksum == i2c_smbus_read_byte_data($file, 63);
4542	return;
4543	}
4544
4545	# Registers used:
4546	# 0x00..0x07: DDC signature
4547	sub ddcmonitor_detect
4548	{
4549	my ($file, $addr) = @_;
4550
4551	return unless
4552	i2c_smbus_read_byte_data($file, 0x00) == 0x00 and
4553	i2c_smbus_read_byte_data($file, 0x01) == 0xFF and
4554	i2c_smbus_read_byte_data($file, 0x02) == 0xFF and
4555	i2c_smbus_read_byte_data($file, 0x03) == 0xFF and
4556	i2c_smbus_read_byte_data($file, 0x04) == 0xFF and
4557	i2c_smbus_read_byte_data($file, 0x05) == 0xFF and
4558	i2c_smbus_read_byte_data($file, 0x06) == 0xFF and
4559	i2c_smbus_read_byte_data($file, 0x07) == 0x00;
4560
4561	return 8;
4562	}
4563
4564	# Chip to detect: 0 = Poseidon I, 1 = Poseidon II, 2 = Scylla,
4565	# 3 = Hermes, 4 = Heimdal, 5 = Heracles
4566	# Registers used:
4567	# 0x00-0x02: Identification (3 capital ASCII letters)
4568	sub fsc_detect
4569	{
4570	my ($file, $addr, $chip) = @_;
4571	my $id;
4572
4573	$id = chr(i2c_smbus_read_byte_data($file, 0x00))
4574	. chr(i2c_smbus_read_byte_data($file, 0x01))
4575	. chr(i2c_smbus_read_byte_data($file, 0x02));
4576
4577	return if $chip == 0 and $id ne 'PEG'; # Pegasus? aka Poseidon I
4578	return if $chip == 1 and $id ne 'POS'; # Poseidon II
4579	return if $chip == 2 and $id ne 'SCY'; # Scylla
4580	return if $chip == 3 and $id ne 'HER'; # Hermes
4581	return if $chip == 4 and $id ne 'HMD'; # Heimdal
4582	return if $chip == 5 and $id ne 'HRC'; # Heracles
4583
4584	return 8;
4585	}
4586
4587	# Registers used:
4588	# 0x3E: Manufacturer ID
4589	# 0x3F: Version/Stepping
4590	sub lm93_detect
4591	{
4592	my ($file, $addr) = @_;
4593	return unless i2c_smbus_read_byte_data($file, 0x3E) == 0x01
4594	and i2c_smbus_read_byte_data($file, 0x3F) == 0x73;
4595	return 5;
4596	}
4597
4598	# Registers used:
4599	# 0x3F: Revision ID
4600	# 0x48: Address
4601	# 0x4A, 0x4B, 0x4F, 0x57, 0x58: Reserved bits.
4602	# We do not use 0x49's reserved bits on purpose. The register is named
4603	# "VID4/Device ID" so it is doubtful bits 7-1 are really unused.
4604	sub m5879_detect
4605	{
4606	my ($file, $addr) = @_;
4607
4608	return unless i2c_smbus_read_byte_data($file, 0x3F) == 0x01;
4609	return unless i2c_smbus_read_byte_data($file, 0x48) == $addr;
4610
4611	return unless (i2c_smbus_read_byte_data($file, 0x4A) & 0x06) == 0
4612	and (i2c_smbus_read_byte_data($file, 0x4B) & 0xFC) == 0
4613	and (i2c_smbus_read_byte_data($file, 0x4F) & 0xFC) == 0
4614	and (i2c_smbus_read_byte_data($file, 0x57) & 0xFE) == 0
4615	and (i2c_smbus_read_byte_data($file, 0x58) & 0xEF) == 0;
4616
4617	return 7;
4618	}
4619
4620	# Registers used:
4621	# 0x3E: Manufacturer ID
4622	# 0x3F: Version/Stepping
4623	# 0x47: VID (3 reserved bits)
4624	# 0x49: VID4 (7 reserved bits)
4625	sub smsc47m192_detect
4626	{
4627	my ($file, $addr) = @_;
4628	return unless i2c_smbus_read_byte_data($file, 0x3E) == 0x55
4629	and (i2c_smbus_read_byte_data($file, 0x3F) & 0xF0) == 0x20
4630	and (i2c_smbus_read_byte_data($file, 0x47) & 0x70) == 0x00
4631	and (i2c_smbus_read_byte_data($file, 0x49) & 0xFE) == 0x80;
4632	return ($addr == 0x2d ? 6 : 5);
4633	}
4634
4635	# Chip to detect: 1 = DME1737, 2 = SCH5027
4636	# Registers used:
4637	# 0x3E: Manufacturer ID
4638	# 0x3F: Version/Stepping
4639	# 0x73: Read-only test register (4 test bits)
4640	# 0x8A: Read-only test register (7 test bits)
4641	# 0xBA: Read-only test register (8 test bits)
4642	sub dme1737_detect
4643	{
4644	my ($file, $addr, $chip) = @_;
4645	my $vendor = i2c_smbus_read_byte_data($file, 0x3E);
4646	my $verstep = i2c_smbus_read_byte_data($file, 0x3F);
4647
4648	return unless $vendor == 0x5C; # SMSC
4649
4650	if ($chip == 1) { # DME1737
4651	return unless ($verstep & 0xF8) == 0x88 and
4652	(i2c_smbus_read_byte_data($file, 0x73) & 0x0F) == 0x09 and
4653	(i2c_smbus_read_byte_data($file, 0x8A) & 0x7F) == 0x4D;
4654	} elsif ($chip == 2) { # SCH5027
4655	return unless $verstep >= 0x69 and $verstep <= 0x6F and
4656	i2c_smbus_read_byte_data($file, 0xBA) == 0x0F;
4657	}
4658
4659	return ($addr == 0x2e ? 6 : 5);
4660	}
4661
4662	# Chip to detect: 1 = F75111R/RG/N, 2 = F75121R/F75122R/RG, 3 = F75373S/SG,
4663	# 4 = F75375S/SP, 5 = F75387SG/RG, 6 = F75383M/S/F75384M/S,
4664	# 7 = custom power control IC
4665	# Registers used:
4666	# 0x5A-0x5B: Chip ID
4667	# 0x5D-0x5E: Vendor ID
4668	sub fintek_detect
4669	{
4670	my ($file, $addr, $chip) = @_;
4671	my $chipid = (i2c_smbus_read_byte_data($file, 0x5A) << 8)
4672	\| i2c_smbus_read_byte_data($file, 0x5B);
4673	my $vendid = (i2c_smbus_read_byte_data($file, 0x5D) << 8)
4674	\| i2c_smbus_read_byte_data($file, 0x5E);
4675
4676	return unless $vendid == 0x1934; # Fintek ID
4677
4678	if ($chip == 1) { # F75111R/RG/N
4679	return unless $chipid == 0x0300;
4680	} elsif ($chip == 2) { # F75121R/F75122R/RG
4681	return unless $chipid == 0x0301;
4682	} elsif ($chip == 3) { # F75373S/SG
4683	return unless $chipid == 0x0204;
4684	} elsif ($chip == 4) { # F75375S/SP
4685	return unless $chipid == 0x0306;
4686	} elsif ($chip == 5) { # F75387SG/RG
4687	return unless $chipid == 0x0410;
4688	} elsif ($chip == 6) { # F75383M/S/F75384M/S
4689	# The datasheet has 0x0303, but Fintek say 0x0413 is also
4690	# possible
4691	return unless $chipid == 0x0303 \|\| $chipid == 0x0413;
4692	} elsif ($chip == 7) { # custom power control IC
4693	return unless $chipid == 0x0302;
4694	}
4695
4696	return 7;
4697	}
4698
4699	# This checks for non-FFFF values for temperature, voltage, and current.
4700	# The address (0x0b) is specified by the SMBus standard so it's likely
4701	# that this really is a smart battery.
4702	sub smartbatt_detect
4703	{
4704	my ($file, $addr) = @_;
4705
4706	return if i2c_smbus_read_word_data($file, 0x08) == 0xffff
4707	\|\| i2c_smbus_read_word_data($file, 0x09) == 0xffff
4708	\|\| i2c_smbus_read_word_data($file, 0x0a) == 0xffff;
4709	return 5;
4710	}
4711
4712	# Chip to detect: 0 = W83L784R/AR/G, 1 = W83L785R/G, 2 = W83L786NR/NG/R/G,
4713	# 3 = W83L785TS-S
4714	# Registers used:
4715	# 0x40: Configuration
4716	# 0x4a: Full I2C Address (W83L784R only)
4717	# 0x4b: I2C addresses of emulated LM75 chips (W83L784R only)
4718	# 0x4c: Winbond Vendor ID (Low Byte)
4719	# 0x4d: Winbond Vendor ID (High Byte)
4720	# 0x4e: Chip ID
4721	sub w83l784r_detect
4722	{
4723	my ($file, $addr, $chip) = @_;
4724	my ($reg, @res);
4725
4726	return unless (i2c_smbus_read_byte_data($file, 0x40) & 0x80) == 0x00;
4727	return if $chip == 0
4728	and i2c_smbus_read_byte_data($file, 0x4a) != $addr;
4729	return unless i2c_smbus_read_byte_data($file, 0x4c) == 0xa3;
4730	return unless i2c_smbus_read_byte_data($file, 0x4d) == 0x5c;
4731
4732	$reg = i2c_smbus_read_byte_data($file, 0x4e);
4733	return if $chip == 0 and $reg != 0x50;
4734	return if $chip == 1 and $reg != 0x60;
4735	return if $chip == 2 and $reg != 0x80;
4736	return if $chip == 3 and $reg != 0x70;
4737
4738	return 8 if $chip != 0; # No subclients
4739
4740	@res = (8);
4741	$reg = i2c_smbus_read_byte_data($file, 0x4b);
4742	push @res, ($reg & 0x07) + 0x48 unless $reg & 0x08;
4743	push @res, (($reg & 0x70) >> 4) + 0x48 unless $reg & 0x80;
4744	return @res;
4745	}
4746
4747	# The max6650 has no device ID register. However, a few registers have
4748	# spare bits, which are documented as being always zero on read. We read
4749	# all of these registers check the spare bits. Any non-zero means this
4750	# is not a max6650/1.
4751	#
4752	# The always zero bits are:
4753	# configuration byte register (0x02) - top 2 bits
4754	# gpio status register (0x14) - top 3 bits
4755	# alarm enable register (0x08) - top 3 bits
4756	# alarm status register (0x0A) - top 3 bits
4757	# tachometer count time register (0x16) - top 6 bits
4758	# Additionally, not all values are possible for lower 3 bits of
4759	# the configuration register.
4760	sub max6650_detect
4761	{
4762	my ($file, $addr) = @_;
4763
4764	my $conf = i2c_smbus_read_byte_data($file, 0x02);
4765
4766	return if i2c_smbus_read_byte_data($file, 0x16) & 0xFC;
4767	return if i2c_smbus_read_byte_data($file, 0x0A) & 0xE0;
4768	return if i2c_smbus_read_byte_data($file, 0x08) & 0xE0;
4769	return if i2c_smbus_read_byte_data($file, 0x14) & 0xE0;
4770	return if ($conf & 0xC0) or ($conf & 0x07) > 4;
4771
4772	return 3;
4773	}
4774
4775	sub max6655_detect
4776	{
4777	my ($file, $addr) = @_;
4778
4779	# checking RDID (Device ID)
4780	return unless i2c_smbus_read_byte_data($file, 0xfe) == 0x0a;
4781	# checking RDRV (Manufacturer ID)
4782	return unless i2c_smbus_read_byte_data($file, 0xff) == 0x4d;
4783	# checking unused bits (conversion rate, extended temperature)
4784	return unless i2c_smbus_read_byte_data($file, 0x04) & 0xf8;
4785	return unless i2c_smbus_read_byte_data($file, 0x10) & 0x1f;
4786	return unless i2c_smbus_read_byte_data($file, 0x11) & 0x1f;
4787	return unless i2c_smbus_read_byte_data($file, 0x12) & 0x1f;
4788
4789	return 6;
4790	}
4791
4792	# This isn't very good detection.
4793	# Verify the i2c address, and the stepping ID (which is 0xb0 on
4794	# my chip but could be different for others...
4795	sub vt1211_i2c_detect
4796	{
4797	my ($file, $addr) = @_;
4798	return unless (i2c_smbus_read_byte_data($file, 0x48) & 0x7f) == $addr;
4799	return unless i2c_smbus_read_byte_data($file, 0x3f) == 0xb0;
4800	return 2;
4801	}
4802
4803	# All ISA detection functions below take at least 1 parameter:
4804	# $_[0]: Address
4805	# Some of these functions which can detect more than one type of device,
4806	# take a second parameter:
4807	# $_[1]: Chip to detect
4808
4809	# Chip to detect: 0 = LM78, 2 = LM79
4810	sub lm78_isa_detect
4811	{
4812	my ($addr, $chip) = @_;
4813	my $val = inb($addr + 1);
4814	return if inb($addr + 2) != $val or inb($addr + 3) != $val or
4815	inb($addr + 7) != $val;
4816
4817	$val = inb($addr + 5);
4818	outb($addr + 5, ~$val & 0x7f);
4819	if ((inb($addr+5) & 0x7f) != (~ $val & 0x7f)) {
4820	outb($addr+5, $val);
4821	return;
4822	}
4823
4824	return unless (isa_read_i5d6($addr, 0x40) & 0x80) == 0x00;
4825	my $reg = isa_read_i5d6($addr, 0x49);
4826	return if $chip == 0 && ($reg != 0x00 && $reg != 0x20 && $reg != 0x40);
4827	return if $chip == 2 && ($reg & 0xfe) != 0xc0;
4828
4829	# Explicitly prevent misdetection of Winbond chips
4830	$reg = isa_read_i5d6($addr, 0x4f);
4831	return if $reg == 0xa3 \|\| $reg == 0x5c;
4832
4833	# Explicitly prevent misdetection of ITE chips
4834	$reg = isa_read_i5d6($addr, 0x58);
4835	return if $reg == 0x90;
4836
4837	return 6;
4838	}
4839
4840	# Chip to detect: 0 = W83781D, 1 = W83782D
4841	sub w83781d_isa_detect
4842	{
4843	my ($addr, $chip) = @_;
4844	my ($reg1, $reg2);
4845	my $val = inb($addr + 1);
4846	return if inb($addr + 2) != $val or inb($addr + 3) != $val or
4847	inb($addr + 7) != $val;
4848
4849	$val = inb($addr + 5);
4850	outb($addr+5, ~$val & 0x7f);
4851	if ((inb($addr+5) & 0x7f) != (~ $val & 0x7f)) {
4852	outb($addr+5, $val);
4853	return;
4854	}
4855
4856	$reg1 = isa_read_i5d6($addr, 0x4e);
4857	$reg2 = isa_read_i5d6($addr, 0x4f);
4858	return unless (($reg1 & 0x80) == 0x00 and $reg2 == 0xa3) or
4859	(($reg1 & 0x80) == 0x80 and $reg2 == 0x5c);
4860	return unless ($reg1 & 0x07) == 0x00;
4861	$reg1 = isa_read_i5d6($addr, 0x58);
4862	return if $chip == 0 && ($reg1 & 0xfe) != 0x10;
4863	return if $chip == 1 && ($reg1 & 0xfe) != 0x30;
4864
4865	return 8;
4866	}
4867
4868	# We simply look for a register at standard locations.
4869	# For KCS, use the STATUS register. For SMIC, use the FLAGS register.
4870	# Incidentally they live at the same offset.
4871	sub ipmi_detect
4872	{
4873	my ($addr) = @_;
4874	return if inb($addr + 3) == 0xff;
4875	return 4;
4876	}
4877
4878	###################
4879	# ALIAS DETECTION #
4880	###################
4881
4882	# These functions take at least 3 parameters:
4883	# $_[0]: ISA/LPC address
4884	# $_[1]: I2C file handle
4885	# $_[2]: I2C address
4886	# Some of these functions may take extra parameters.
4887	# They return 1 if both devices are the same, 0 if not.
4888
4889	# Extra parameters:
4890	# $_[3]: First limit register to compare
4891	# $_[4]: Last limit register to compare
4892	sub winbond_alias_detect
4893	{
4894	my ($isa_addr, $file, $i2c_addr, $first, $last) = @_;
4895	my $i;
4896
4897	return 0 unless isa_read_i5d6($isa_addr, 0x48) == $i2c_addr;
4898	for ($i = $first; $i <= $last; $i++) {
4899	return 0 unless isa_read_i5d6($isa_addr, $i) ==
4900	i2c_smbus_read_byte_data($file, $i);
4901	}
4902	return 1;
4903	}
4904
4905	############################
4906	# PCI CHIP / CPU DETECTION #
4907	############################
4908
4909	sub sis5595_pci_detect
4910	{
4911	return unless exists $pci_list{'1039:0008'};
4912	return 9;
4913	}
4914
4915	sub via686a_pci_detect
4916	{
4917	return unless exists $pci_list{'1106:3057'};
4918	return 9;
4919	}
4920
4921	sub via8231_pci_detect
4922	{
4923	return unless exists $pci_list{'1106:8235'};
4924	return 9;
4925	}
4926
4927	sub k8temp_pci_detect
4928	{
4929	return unless exists $pci_list{'1022:1103'};
4930	return 9;
4931	}
4932
4933	sub k10temp_pci_detect
4934	{
4935	return unless exists $pci_list{'1022:1203'};
4936	return 9;
4937	}
4938
4939	sub intel_amb_detect
4940	{
4941	if ((exists $pci_list{'8086:25f0'}) \|\| # Intel 5000
4942	(exists $pci_list{'8086:4030'})) { # Intel 5400
4943	return 9;
4944	}
4945	return;
4946	}
4947
4948	sub coretemp_detect
4949	{
4950	my $probecpu;
4951	foreach $probecpu (@cpu) {
4952	if ($probecpu->{vendor_id} eq 'GenuineIntel' &&
4953	$probecpu->{'cpu family'} == 6 &&
4954	($probecpu->{model} == 14 \|\|
4955	$probecpu->{model} == 15 \|\|
4956	$probecpu->{model} == 0x16 \|\|
4957	$probecpu->{model} == 0x17 \|\|
4958	$probecpu->{model} == 0x1a)) {
4959	return 9;
4960	}
4961	}
4962	return;
4963	}
4964
4965	sub c7temp_detect
4966	{
4967	my $probecpu;
4968	foreach $probecpu (@cpu) {
4969	if ($probecpu->{vendor_id} eq 'CentaurHauls' &&
4970	$probecpu->{'cpu family'} == 6 &&
4971	($probecpu->{model} == 0xa \|\|
4972	$probecpu->{model} == 0xd)) {
4973	return 9;
4974	}
4975	}
4976	return;
4977	}
4978
4979	#################
4980	# SPECIAL MODES #
4981	#################
4982
4983	sub show_i2c_stats
4984	{
4985	my ($chip, $addr, %histo, $chips);
4986
4987	# Gather the data
4988	foreach $chip (@chip_ids) {
4989	next unless defined $chip->{i2c_addrs};
4990	$chips++;
4991	foreach my $addr (@{$chip->{i2c_addrs}}) {
4992	$histo{$addr}++;
4993	}
4994	}
4995
4996	# Display the data
4997	printf "\%d I2C chips known, \%d I2C addresses probed\n\n",
4998	$chips, scalar keys %histo;
4999	print " 0 1 2 3 4 5 6 7 8 9 a b c d e f\n".
5000	"00: ";
5001	for (my $addr = 0x03; $addr <= 0x77; $addr++) {
5002	printf("\n\%02x:", $addr) if ($addr % 16) == 0;
5003	if (defined $histo{$addr}) {
5004	printf ' %02d', $histo{$addr};
5005	} else {
5006	print ' --';
5007	}
5008	}
5009	print "\n";
5010	}
5011
5012	################
5013	# MAIN PROGRAM #
5014	################
5015
5016	# $_[0]: reference to a list of chip hashes
5017	sub print_chips_report
5018	{
5019	my ($listref) = @_;
5020	my $data;
5021
5022	foreach $data (@$listref) {
5023	my $is_i2c = exists $data->{i2c_addr};
5024	my $is_isa = exists $data->{isa_addr};
5025	print " * ";
5026	if ($is_i2c) {
5027	printf "Bus `%s'\n", $i2c_adapters[$data->{i2c_devnr}]->{name};
5028	printf " Busdriver `%s', I2C address 0x%02x",
5029	$i2c_adapters[$data->{i2c_devnr}]->{driver}, $data->{i2c_addr};
5030	if (exists $data->{i2c_sub_addrs}) {
5031	print " (and";
5032	my $sub_addr;
5033	foreach $sub_addr (@{$data->{i2c_sub_addrs}}) {
5034	printf " 0x%02x", $sub_addr;
5035	}
5036	print ")"
5037	}
5038	print "\n ";
5039	}
5040	if ($is_isa) {
5041	print "ISA bus";
5042	if ($data->{isa_addr}) {
5043	printf ", address 0x%x", $data->{isa_addr};
5044	}
5045	print " (Busdriver `i2c-isa')"
5046	unless kernel_version_at_least(2, 6, 18);
5047	print "\n ";
5048	}
5049	printf "Chip `%s' (confidence: %d)\n",
5050	$data->{chipname}, $data->{conf};
5051	}
5052	}
5053
5054	sub generate_modprobes
5055	{
5056	my ($driver, $detection, $adap);
5057	my ($isa, $ipmi);
5058	my ($modprobes, $configfile, %bus_modules, %hwmon_modules);
5059
5060	foreach $driver (keys %chips_detected) {
5061	foreach $detection (@{$chips_detected{$driver}}) {
5062	# Tag adapters which host hardware monitoring chips we want to access
5063	if (exists $detection->{i2c_devnr}
5064	&& !exists $detection->{isa_addr}) {
5065	$i2c_adapters[$detection->{i2c_devnr}]->{used}++;
5066	}
5067
5068	if (exists $detection->{isa_addr}) {
5069	$isa = 1;
5070	}
5071	}
5072	if ($driver eq "ipmisensors") {
5073	$ipmi = 1;
5074	}
5075	}
5076
5077	# Handle aliases
5078	# As of kernel 2.6.28, alias detection is handled by kernel drivers
5079	# directly, so module options are no longer needed.
5080	unless (kernel_version_at_least(2, 6, 28)) {
5081	foreach $driver (keys %chips_detected) {
5082	my @optionlist = ();
5083	foreach $detection (@{$chips_detected{$driver}}) {
5084	next unless exists $detection->{i2c_addr}
5085	&& exists $detection->{isa_addr}
5086	&& $i2c_adapters[$detection->{i2c_devnr}]->{used};
5087
5088	push @optionlist, sprintf("%d,0x%02x",
5089	$detection->{i2c_devnr},
5090	$detection->{i2c_addr});
5091	}
5092
5093	next if not @optionlist;
5094	$configfile = "# hwmon module options\n"
5095	unless defined $configfile;
5096	$configfile .= "options $driver ignore=".
5097	(join ",", @optionlist)."\n";
5098	}
5099	}
5100
5101	# If we added any module option to handle aliases, we need to load all
5102	# the adapter drivers so that the numbers will be the same. If not, then
5103	# we only load the adapter drivers which are useful.
5104	foreach $adap (@i2c_adapters) {
5105	next unless loaded_by_us($adap->{driver});
5106	next if not defined $configfile and not $adap->{used};
5107	$modprobes .= "# I2C adapter drivers\n" unless defined $modprobes;
5108	$modprobes .= "modprobe $adap->{driver}\n"
5109	unless exists $bus_modules{$adap->{driver}};
5110	$bus_modules{$adap->{driver}}++;
5111	}
5112
5113	# i2c-isa is loaded automatically (as a dependency) since 2.6.14,
5114	# and will soon be gone.
5115	if ($isa && !kernel_version_at_least(2, 6, 18)) {
5116	$modprobes .= "modprobe i2c-isa\n";
5117	$bus_modules{"i2c-isa"}++;
5118	}
5119	if ($ipmi) {
5120	$modprobes .= "# You must also install and load the IPMI modules\n";
5121	$modprobes .= "modprobe ipmi-si\n";
5122	$bus_modules{"ipmi-si"}++;
5123	}
5124
5125	# Now determine the chip probe lines
5126	$modprobes .= "# Chip drivers\n";
5127	foreach $driver (keys %chips_detected) {
5128	next if not @{$chips_detected{$driver}};
5129	if ($driver eq "to-be-written") {
5130	$modprobes .= "# no driver for ${$chips_detected{$driver}}[0]{chipname} yet\n";
5131	} else {
5132	open(local *INPUTFILE, "modprobe -l $driver 2>/dev/null \|");
5133	local $_;
5134	my $modulefound = 0;
5135	while (<INPUTFILE>) {
5136	if (m@/@) {
5137	$modulefound = 1;
5138	last;
5139	}
5140	}
5141	close(INPUTFILE);
5142	# Check return value from modprobe in case modprobe -l
5143	# isn't supported
5144	if ((($? >> 8) == 0) && ! $modulefound) {
5145	$modprobes .= "# Warning: the required module $driver is not currently installed\n".
5146	"# on your system. For status of 2.6 kernel ports check\n".
5147	"# http://www.lm-sensors.org/wiki/Devices. If driver is built\n".
5148	"# into the kernel, or unavailable, comment out the following line.\n";
5149	}
5150	$modprobes .= "modprobe $driver\n";
5151	$hwmon_modules{$driver}++;
5152	}
5153	}
5154
5155	my @bus_modules = sort keys %bus_modules;
5156	my @hwmon_modules = sort keys %hwmon_modules;
5157	return ($modprobes, $configfile, \@bus_modules, \@hwmon_modules);
5158	}
5159
5160	sub main
5161	{
5162	my ($input, $superio_features);
5163
5164	# Handle special command line cases first
5165	if (defined $ARGV[0] && $ARGV[0] eq "--stat") {
5166	show_i2c_stats();
5167	exit 0;
5168	}
5169
5170	# We won't go very far if not root
5171	unless ($> == 0) {
5172	print "You need to be root to run this script.\n";
5173	exit -1;
5174	}
5175
5176	if (-x "/sbin/service" && -f "/etc/init.d/lm_sensors" &&
5177	-f "/var/lock/subsys/lm_sensors") {
5178	system("/sbin/service", "lm_sensors", "stop");
5179	}
5180
5181	initialize_kernel_version();
5182	initialize_conf();
5183	initialize_pci();
5184	initialize_modules_list();
5185	# Make sure any special case chips are added to the chip_ids list
5186	# before making the support modules list
5187	chip_special_cases();
5188	initialize_modules_supported();
5189	initialize_cpu_list();
5190
5191	print "# sensors-detect revision $revision\n";
5192	initialize_dmi_data();
5193	print_dmi_summary();
5194	print "\n";
5195	print "This program will help you determine which kernel modules you need\n",
5196	"to load to use lm_sensors most effectively. It is generally safe\n",
5197	"and recommended to accept the default answers to all questions,\n",
5198	"unless you know what you're doing.\n\n";
5199
5200	print "Some south bridges, CPUs or memory controllers contain embedded sensors.\n".
5201	"Do you want to scan for them? This is totally safe. (YES/no): ";
5202	unless (<STDIN> =~ /^\s*n/i) {
5203	$\| = 1;
5204	foreach my $entry (@cpu_ids) {
5205	scan_cpu($entry);
5206	}
5207	$\| = 0;
5208	}
5209	print "\n";
5210
5211	$superio_features = 0;
5212	# Skip "random" I/O port probing on PPC
5213	if ($kernel_arch ne 'ppc'
5214	&& $kernel_arch ne 'ppc64') {
5215	print "Some Super I/O chips contain embedded sensors. We have to write to\n".
5216	"standard I/O ports to probe them. This is usually safe.\n";
5217	print "Do you want to scan for Super I/O sensors? (YES/no): ";
5218	unless (<STDIN> =~ /^\s*n/i) {
5219	initialize_ioports();
5220	$superio_features \|= scan_superio(0x2e, 0x2f);
5221	$superio_features \|= scan_superio(0x4e, 0x4f);
5222	close_ioports();
5223	}
5224	print "\n";
5225
5226	unless (is_laptop()) {
5227	print "Some systems (mainly servers) implement IPMI, a set of common interfaces\n".
5228	"through which system health data may be retrieved, amongst other things.\n".
5229	"We have to read from arbitrary I/O ports to probe for such interfaces.\n".
5230	"This is normally safe. Do you want to scan for IPMI interfaces?\n".
5231	"(YES/no): ";
5232	unless (<STDIN> =~ /^\s*n/i) {
5233	initialize_ioports();
5234	scan_isa_bus(\@ipmi_ifs);
5235	close_ioports();
5236	}
5237	print "\n";
5238	}
5239
5240	printf "Some hardware monitoring chips are accessible through the ISA I/O ports.\n".
5241	"We have to write to arbitrary I/O ports to probe them. This is usually\n".
5242	"safe though. Yes, you do have ISA I/O ports even if you do not have any\n".
5243	"ISA slots! Do you want to scan the ISA I/O ports? (\%s): ",
5244	$superio_features ? "yes/NO" : "YES/no";
5245	$input = <STDIN>;
5246	unless ($input =~ /^\s*n/i
5247	\|\| ($superio_features && $input !~ /^\s*y/i)) {
5248	initialize_ioports();
5249	scan_isa_bus(\@chip_ids);
5250	close_ioports();
5251	}
5252	print "\n";
5253	}
5254
5255	print "Lastly, we can probe the I2C/SMBus adapters for connected hardware\n".
5256	"monitoring devices. This is the most risky part, and while it works\n".
5257	"reasonably well on most systems, it has been reported to cause trouble\n".
5258	"on some systems.\n".
5259	"Do you want to probe the I2C/SMBus adapters now? (YES/no): ";
5260
5261	unless (<STDIN> =~ /^\s*n/i) {
5262	adapter_pci_detection();
5263	load_module("i2c-dev") unless -e "$sysfs_root/class/i2c-dev";
5264	initialize_i2c_adapters_list();
5265	$i2c_addresses_to_scan = i2c_addresses_to_scan();
5266	print "\n";
5267
5268	# Skip SMBus probing by default if Super-I/O has all the features
5269	my $by_default = ~$superio_features & (FEAT_IN \| FEAT_FAN \| FEAT_TEMP);
5270	# Except on Asus and Tyan boards which often have more than
5271	# one hardware monitoring chip
5272	$by_default = 1 if dmi_match('board_vendor', 'asustek', 'tyan',
5273	'supermicro');
5274
5275	for (my $dev_nr = 0; $dev_nr < @i2c_adapters; $dev_nr++) {
5276	next unless exists $i2c_adapters[$dev_nr];
5277	scan_i2c_adapter($dev_nr, $by_default);
5278	}
5279	}
5280
5281	if (!keys %chips_detected) {
5282	print "Sorry, no sensors were detected.\n";
5283	if (is_laptop() && -d "$sysfs_root/firmware/acpi") {
5284	print "This is relatively common on laptops, where thermal management is\n".
5285	"handled by ACPI rather than the OS.\n";
5286	} else {
5287	print "Either your system has no sensors, or they are not supported, or\n".
5288	"they are connected to an I2C or SMBus adapter that is not\n".
5289	"supported. If you find out what chips are on your board, check\n".
5290	"http://www.lm-sensors.org/wiki/Devices for driver status.\n";
5291	}
5292	exit;
5293	}
5294
5295	print "Now follows a summary of the probes I have just done.\n".
5296	"Just press ENTER to continue: ";
5297	<STDIN>;
5298
5299	foreach my $driver (keys %chips_detected) {
5300	next unless @{$chips_detected{$driver}};
5301	find_aliases($chips_detected{$driver});
5302	print "\nDriver `$driver':\n";
5303	print_chips_report($chips_detected{$driver});
5304	}
5305	print "\n";
5306
5307	my ($modprobes, $configfile, $bus_modules, $hwmon_modules) = generate_modprobes();
5308
5309	if (defined $configfile) {
5310	my $have_modprobe_d = -d '/etc/modprobe.d';
5311	printf "Do you want to \%s /etc/modprobe.d/lm_sensors? (\%s): ",
5312	(-e '/etc/modprobe.d/lm_sensors' ? 'overwrite' : 'generate'),
5313	($have_modprobe_d ? 'YES/no' : 'yes/NO');
5314	$_ = <STDIN>;
5315	if (($have_modprobe_d and not m/^\sn/i) or m/^\sy/i) {
5316	unless ($have_modprobe_d) {
5317	mkdir('/etc/modprobe.d', 0777)
5318	or die "Sorry, can't create /etc/modprobe.d ($!)";
5319	}
5320	open(local *MODPROBE_D, ">/etc/modprobe.d/lm_sensors")
5321	or die "Sorry, can't create /etc/modprobe.d/lm_sensors ($!)";
5322	print MODPROBE_D "# Generated by sensors-detect on " . scalar localtime() . "\n";
5323	print MODPROBE_D $configfile;
5324	close(MODPROBE_D);
5325	} else {
5326	print "To make the sensors modules behave correctly, add these lines to\n".
5327	"/etc/modprobe.conf:\n\n";
5328	print "#----cut here----\n".
5329	�