| 1 | /* |
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| 2 | i2c-viapro.c - Part of lm_sensors, Linux kernel modules for hardware |
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| 3 | monitoring |
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| 4 | Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, |
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| 5 | Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>, |
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| 6 | Mark D. Studebaker <mdsxyz123@yahoo.com> |
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| 7 | |
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| 8 | This program is free software; you can redistribute it and/or modify |
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| 9 | it under the terms of the GNU General Public License as published by |
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| 10 | the Free Software Foundation; either version 2 of the License, or |
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| 11 | (at your option) any later version. |
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| 12 | |
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| 13 | This program is distributed in the hope that it will be useful, |
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | GNU General Public License for more details. |
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| 17 | |
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| 18 | You should have received a copy of the GNU General Public License |
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| 19 | along with this program; if not, write to the Free Software |
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| 20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 21 | */ |
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| 22 | |
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| 23 | /* |
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| 24 | Supports Via devices: |
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| 25 | 82C596A/B (0x3050) |
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| 26 | 82C596B (0x3051) |
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| 27 | 82C686A/B |
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| 28 | 8231 |
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| 29 | 8233 |
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| 30 | 8233A (0x3147 and 0x3177) |
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| 31 | 8235 |
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| 32 | 8237 |
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| 33 | Note: we assume there can only be one device, with one SMBus interface. |
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| 34 | */ |
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| 35 | |
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| 36 | #include <linux/module.h> |
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| 37 | #include <linux/pci.h> |
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| 38 | #include <linux/kernel.h> |
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| 39 | #include <linux/stddef.h> |
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| 40 | #include <linux/sched.h> |
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| 41 | #include <linux/ioport.h> |
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| 42 | #include <linux/i2c.h> |
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| 43 | #include <linux/init.h> |
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| 44 | #include <asm/io.h> |
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| 45 | #include "version.h" |
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| 46 | #include "sensors_compat.h" |
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| 47 | |
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| 48 | #define SMBBA1 0x90 |
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| 49 | #define SMBBA2 0x80 |
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| 50 | #define SMBBA3 0xD0 |
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| 51 | |
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| 52 | /* SMBus address offsets */ |
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| 53 | static unsigned short vt596_smba; |
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| 54 | #define SMBHSTSTS (vt596_smba + 0) |
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| 55 | #define SMBHSLVSTS (vt596_smba + 1) |
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| 56 | #define SMBHSTCNT (vt596_smba + 2) |
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| 57 | #define SMBHSTCMD (vt596_smba + 3) |
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| 58 | #define SMBHSTADD (vt596_smba + 4) |
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| 59 | #define SMBHSTDAT0 (vt596_smba + 5) |
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| 60 | #define SMBHSTDAT1 (vt596_smba + 6) |
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| 61 | #define SMBBLKDAT (vt596_smba + 7) |
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| 62 | #define SMBSLVCNT (vt596_smba + 8) |
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| 63 | #define SMBSHDWCMD (vt596_smba + 9) |
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| 64 | #define SMBSLVEVT (vt596_smba + 0xA) |
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| 65 | #define SMBSLVDAT (vt596_smba + 0xC) |
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| 66 | |
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| 67 | /* PCI Address Constants */ |
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| 68 | |
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| 69 | /* SMBus data in configuration space can be found in two places, |
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| 70 | We try to select the better one */ |
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| 71 | |
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| 72 | static unsigned short smb_cf_hstcfg = 0xD2; |
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| 73 | |
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| 74 | #define SMBHSTCFG (smb_cf_hstcfg) |
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| 75 | #define SMBSLVC (smb_cf_hstcfg + 1) |
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| 76 | #define SMBSHDW1 (smb_cf_hstcfg + 2) |
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| 77 | #define SMBSHDW2 (smb_cf_hstcfg + 3) |
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| 78 | #define SMBREV (smb_cf_hstcfg + 4) |
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| 79 | |
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| 80 | /* Other settings */ |
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| 81 | #define MAX_TIMEOUT 500 |
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| 82 | #define ENABLE_INT9 0 |
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| 83 | |
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| 84 | /* VT82C596 constants */ |
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| 85 | #define VT596_QUICK 0x00 |
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| 86 | #define VT596_BYTE 0x04 |
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| 87 | #define VT596_BYTE_DATA 0x08 |
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| 88 | #define VT596_WORD_DATA 0x0C |
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| 89 | #define VT596_BLOCK_DATA 0x14 |
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| 90 | |
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| 91 | |
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| 92 | /* If force is set to anything different from 0, we forcibly enable the |
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| 93 | VT596. DANGEROUS! */ |
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| 94 | static int force; |
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| 95 | MODULE_PARM(force, "i"); |
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| 96 | MODULE_PARM_DESC(force, "Forcibly enable the SMBus. DANGEROUS!"); |
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| 97 | |
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| 98 | /* If force_addr is set to anything different from 0, we forcibly enable |
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| 99 | the VT596 at the given address. VERY DANGEROUS! */ |
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| 100 | static int force_addr; |
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| 101 | MODULE_PARM(force_addr, "i"); |
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| 102 | MODULE_PARM_DESC(force_addr, |
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| 103 | "Forcibly enable the SMBus at the given address. " |
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| 104 | "EXTREMELY DANGEROUS!"); |
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| 105 | |
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| 106 | |
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| 107 | static struct i2c_adapter vt596_adapter; |
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| 108 | |
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| 109 | /* Another internally used function */ |
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| 110 | static int vt596_transaction(void) |
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| 111 | { |
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| 112 | int temp; |
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| 113 | int result = 0; |
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| 114 | int timeout = 0; |
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| 115 | |
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| 116 | dev_dbg(&vt596_adapter, "Transaction (pre): CNT=%02x, CMD=%02x, " |
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| 117 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), |
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| 118 | inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), |
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| 119 | inb_p(SMBHSTDAT1)); |
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| 120 | |
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| 121 | /* Make sure the SMBus host is ready to start transmitting */ |
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| 122 | if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { |
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| 123 | dev_dbg(&vt596_adapter, "SMBus busy (0x%02x). " |
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| 124 | "Resetting...\n", temp); |
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| 125 | |
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| 126 | outb_p(temp, SMBHSTSTS); |
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| 127 | if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { |
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| 128 | dev_dbg(&vt596_adapter, "Failed! (0x%02x)\n", temp); |
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| 129 | |
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| 130 | return -1; |
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| 131 | } else { |
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| 132 | dev_dbg(&vt596_adapter, "Successfull!\n"); |
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| 133 | } |
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| 134 | } |
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| 135 | |
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| 136 | /* start the transaction by setting bit 6 */ |
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| 137 | outb_p(inb(SMBHSTCNT) | 0x040, SMBHSTCNT); |
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| 138 | |
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| 139 | /* We will always wait for a fraction of a second! |
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| 140 | I don't know if VIA needs this, Intel did */ |
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| 141 | do { |
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| 142 | i2c_delay(1); |
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| 143 | temp = inb_p(SMBHSTSTS); |
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| 144 | } while ((temp & 0x01) && (timeout++ < MAX_TIMEOUT)); |
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| 145 | |
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| 146 | /* If the SMBus is still busy, we give up */ |
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| 147 | if (timeout >= MAX_TIMEOUT) { |
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| 148 | result = -1; |
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| 149 | dev_dbg(&vt596_adapter, "SMBus Timeout!\n"); |
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| 150 | } |
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| 151 | |
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| 152 | if (temp & 0x10) { |
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| 153 | result = -1; |
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| 154 | dev_dbg(&vt596_adapter, "Error: Failed bus transaction\n"); |
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| 155 | } |
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| 156 | |
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| 157 | if (temp & 0x08) { |
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| 158 | result = -1; |
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| 159 | dev_info(&vt596_adapter, "Bus collision! SMBus may be " |
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| 160 | "locked until next hard\nreset. (sorry!)\n"); |
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| 161 | /* Clock stops and slave is stuck in mid-transmission */ |
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| 162 | } |
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| 163 | |
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| 164 | if (temp & 0x04) { |
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| 165 | result = -1; |
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| 166 | dev_dbg(&vt596_adapter, "Error: no response!\n"); |
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| 167 | } |
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| 168 | |
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| 169 | if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { |
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| 170 | outb_p(temp, SMBHSTSTS); |
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| 171 | if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { |
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| 172 | dev_warn(&vt596_adapter, "Failed reset at end " |
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| 173 | "of transaction (%02x)\n", temp); |
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| 174 | } |
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| 175 | } |
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| 176 | |
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| 177 | dev_dbg(&vt596_adapter, "Transaction (post): CNT=%02x, CMD=%02x, " |
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| 178 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), |
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| 179 | inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), |
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| 180 | inb_p(SMBHSTDAT1)); |
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| 181 | |
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| 182 | return result; |
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| 183 | } |
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| 184 | |
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| 185 | /* Return -1 on error. */ |
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| 186 | static s32 vt596_access(struct i2c_adapter *adap, u16 addr, |
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| 187 | unsigned short flags, char read_write, u8 command, |
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| 188 | int size, union i2c_smbus_data *data) |
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| 189 | { |
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| 190 | int i, len; |
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| 191 | |
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| 192 | switch (size) { |
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| 193 | case I2C_SMBUS_QUICK: |
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| 194 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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| 195 | SMBHSTADD); |
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| 196 | size = VT596_QUICK; |
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| 197 | break; |
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| 198 | case I2C_SMBUS_BYTE: |
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| 199 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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| 200 | SMBHSTADD); |
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| 201 | if (read_write == I2C_SMBUS_WRITE) |
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| 202 | outb_p(command, SMBHSTCMD); |
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| 203 | size = VT596_BYTE; |
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| 204 | break; |
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| 205 | case I2C_SMBUS_BYTE_DATA: |
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| 206 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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| 207 | SMBHSTADD); |
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| 208 | outb_p(command, SMBHSTCMD); |
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| 209 | if (read_write == I2C_SMBUS_WRITE) |
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| 210 | outb_p(data->byte, SMBHSTDAT0); |
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| 211 | size = VT596_BYTE_DATA; |
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| 212 | break; |
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| 213 | case I2C_SMBUS_WORD_DATA: |
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| 214 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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| 215 | SMBHSTADD); |
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| 216 | outb_p(command, SMBHSTCMD); |
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| 217 | if (read_write == I2C_SMBUS_WRITE) { |
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| 218 | outb_p(data->word & 0xff, SMBHSTDAT0); |
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| 219 | outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1); |
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| 220 | } |
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| 221 | size = VT596_WORD_DATA; |
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| 222 | break; |
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| 223 | case I2C_SMBUS_BLOCK_DATA: |
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| 224 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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| 225 | SMBHSTADD); |
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| 226 | outb_p(command, SMBHSTCMD); |
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| 227 | if (read_write == I2C_SMBUS_WRITE) { |
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| 228 | len = data->block[0]; |
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| 229 | if (len < 0) |
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| 230 | len = 0; |
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| 231 | if (len > I2C_SMBUS_BLOCK_MAX) |
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| 232 | len = I2C_SMBUS_BLOCK_MAX; |
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| 233 | outb_p(len, SMBHSTDAT0); |
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| 234 | i = inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */ |
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| 235 | for (i = 1; i <= len; i++) |
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| 236 | outb_p(data->block[i], SMBBLKDAT); |
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| 237 | } |
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| 238 | size = VT596_BLOCK_DATA; |
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| 239 | break; |
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| 240 | default: |
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| 241 | dev_warn(&vt596_adapter, "Unsupported transaction %d\n", size); |
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| 242 | return -1; |
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| 243 | } |
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| 244 | |
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| 245 | outb_p((size & 0x1C) + (ENABLE_INT9 & 1), SMBHSTCNT); |
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| 246 | |
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| 247 | if (vt596_transaction()) /* Error in transaction */ |
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| 248 | return -1; |
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| 249 | |
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| 250 | if ((read_write == I2C_SMBUS_WRITE) || (size == VT596_QUICK)) |
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| 251 | return 0; |
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| 252 | |
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| 253 | switch (size) { |
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| 254 | case VT596_BYTE: |
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| 255 | /* Where is the result put? I assume here it is in |
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| 256 | * SMBHSTDAT0 but it might just as well be in the |
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| 257 | * SMBHSTCMD. No clue in the docs |
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| 258 | */ |
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| 259 | data->byte = inb_p(SMBHSTDAT0); |
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| 260 | break; |
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| 261 | case VT596_BYTE_DATA: |
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| 262 | data->byte = inb_p(SMBHSTDAT0); |
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| 263 | break; |
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| 264 | case VT596_WORD_DATA: |
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| 265 | data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); |
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| 266 | break; |
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| 267 | case VT596_BLOCK_DATA: |
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| 268 | data->block[0] = inb_p(SMBHSTDAT0); |
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| 269 | if (data->block[0] > I2C_SMBUS_BLOCK_MAX) |
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| 270 | data->block[0] = I2C_SMBUS_BLOCK_MAX; |
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| 271 | i = inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */ |
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| 272 | for (i = 1; i <= data->block[0]; i++) |
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| 273 | data->block[i] = inb_p(SMBBLKDAT); |
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| 274 | break; |
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| 275 | } |
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| 276 | return 0; |
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| 277 | } |
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| 278 | |
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| 279 | static void vt596_inc(struct i2c_adapter *adapter) |
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| 280 | { |
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| 281 | #ifdef MODULE |
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| 282 | MOD_INC_USE_COUNT; |
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| 283 | #endif |
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| 284 | } |
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| 285 | |
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| 286 | static void vt596_dec(struct i2c_adapter *adapter) |
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| 287 | { |
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| 288 | #ifdef MODULE |
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| 289 | MOD_DEC_USE_COUNT; |
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| 290 | #endif |
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| 291 | } |
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| 292 | |
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| 293 | static u32 vt596_func(struct i2c_adapter *adapter) |
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| 294 | { |
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| 295 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | |
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| 296 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | |
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| 297 | I2C_FUNC_SMBUS_BLOCK_DATA; |
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| 298 | } |
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| 299 | |
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| 300 | static struct i2c_algorithm smbus_algorithm = { |
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| 301 | .name = "Non-I2C SMBus adapter", |
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| 302 | .id = I2C_ALGO_SMBUS, |
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| 303 | .smbus_xfer = vt596_access, |
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| 304 | .functionality = vt596_func, |
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| 305 | }; |
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| 306 | |
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| 307 | static struct i2c_adapter vt596_adapter = { |
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| 308 | .id = I2C_ALGO_SMBUS | I2C_HW_SMBUS_VIA2, |
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| 309 | .algo = &smbus_algorithm, |
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| 310 | .name = "unset", |
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| 311 | .inc_use = vt596_inc, |
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| 312 | .dec_use = vt596_dec, |
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| 313 | }; |
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| 314 | |
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| 315 | static int __init vt596_probe(struct pci_dev *pdev, |
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| 316 | const struct pci_device_id *id) |
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| 317 | { |
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| 318 | unsigned char temp; |
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| 319 | int error = -ENODEV; |
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| 320 | |
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| 321 | /* Determine the address of the SMBus areas */ |
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| 322 | if (force_addr) { |
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| 323 | vt596_smba = force_addr & 0xfff0; |
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| 324 | force = 0; |
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| 325 | goto found; |
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| 326 | } |
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| 327 | |
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| 328 | if ((pci_read_config_word(pdev, id->driver_data, &vt596_smba)) || |
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| 329 | !(vt596_smba & 0x1)) { |
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| 330 | /* try 2nd address and config reg. for 596 */ |
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| 331 | if (id->device == PCI_DEVICE_ID_VIA_82C596_3 && |
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| 332 | !pci_read_config_word(pdev, SMBBA2, &vt596_smba) && |
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| 333 | (vt596_smba & 0x1)) { |
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| 334 | smb_cf_hstcfg = 0x84; |
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| 335 | } else { |
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| 336 | /* no matches at all */ |
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| 337 | dev_err(pdev, "Cannot configure " |
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| 338 | "SMBus I/O Base address\n"); |
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| 339 | return -ENODEV; |
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| 340 | } |
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| 341 | } |
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| 342 | |
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| 343 | vt596_smba &= 0xfff0; |
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| 344 | if (vt596_smba == 0) { |
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| 345 | dev_err(pdev, "SMBus base address " |
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| 346 | "uninitialized - upgrade BIOS or use " |
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| 347 | "force_addr=0xaddr\n"); |
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| 348 | return -ENODEV; |
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| 349 | } |
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| 350 | |
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| 351 | found: |
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| 352 | if (!request_region(vt596_smba, 8, "viapro-smbus")) { |
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| 353 | dev_err(pdev, "SMBus region 0x%x already in use!\n", |
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| 354 | vt596_smba); |
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| 355 | return -ENODEV; |
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| 356 | } |
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| 357 | |
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| 358 | pci_read_config_byte(pdev, SMBHSTCFG, &temp); |
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| 359 | /* If force_addr is set, we program the new address here. Just to make |
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| 360 | sure, we disable the VT596 first. */ |
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| 361 | if (force_addr) { |
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| 362 | pci_write_config_byte(pdev, SMBHSTCFG, temp & 0xfe); |
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| 363 | pci_write_config_word(pdev, id->driver_data, vt596_smba); |
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| 364 | pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01); |
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| 365 | dev_warn(pdev, "WARNING: SMBus interface set to new " |
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| 366 | "address 0x%04x!\n", vt596_smba); |
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| 367 | } else if ((temp & 1) == 0) { |
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| 368 | if (force) { |
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| 369 | /* NOTE: This assumes I/O space and other allocations |
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| 370 | * WERE done by the Bios! Don't complain if your |
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| 371 | * hardware does weird things after enabling this. |
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| 372 | * :') Check for Bios updates before resorting to |
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| 373 | * this. |
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| 374 | */ |
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| 375 | pci_write_config_byte(pdev, SMBHSTCFG, temp | 1); |
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| 376 | dev_info(pdev, "Enabling SMBus device\n"); |
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| 377 | } else { |
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| 378 | dev_err(pdev, "SMBUS: Error: Host SMBus " |
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| 379 | "controller not enabled! - upgrade BIOS or " |
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| 380 | "use force=1\n"); |
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| 381 | goto release_region; |
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| 382 | } |
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| 383 | } |
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| 384 | |
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| 385 | if ((temp & 0x0E) == 8) |
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| 386 | dev_dbg(pdev, "using Interrupt 9 for SMBus.\n"); |
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| 387 | else if ((temp & 0x0E) == 0) |
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| 388 | dev_dbg(pdev, "using Interrupt SMI# for SMBus.\n"); |
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| 389 | else |
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| 390 | dev_dbg(pdev, "Illegal Interrupt configuration " |
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| 391 | "(or code out of date)!\n"); |
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| 392 | |
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| 393 | pci_read_config_byte(pdev, SMBREV, &temp); |
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| 394 | dev_dbg(pdev, "SMBREV = 0x%X\n", temp); |
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| 395 | dev_dbg(pdev, "VT596_smba = 0x%X\n", vt596_smba); |
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| 396 | |
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| 397 | snprintf(vt596_adapter.name, 32, |
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| 398 | "SMBus Via Pro adapter at %04x", vt596_smba); |
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| 399 | |
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| 400 | return i2c_add_adapter(&vt596_adapter); |
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| 401 | |
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| 402 | release_region: |
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| 403 | release_region(vt596_smba, 8); |
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| 404 | return error; |
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| 405 | } |
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| 406 | |
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| 407 | /* 8233A is undefined before kernel 2.4.19 */ |
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| 408 | #ifndef PCI_DEVICE_ID_VIA_8233A |
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| 409 | #define PCI_DEVICE_ID_VIA_8233A 0x3147 |
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| 410 | #endif |
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| 411 | /* 8235 is undefined before kernel 2.4.20 */ |
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| 412 | #ifndef PCI_DEVICE_ID_VIA_8235 |
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| 413 | #define PCI_DEVICE_ID_VIA_8235 0x3177 |
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| 414 | #endif |
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| 415 | /* 8237 is undefined before kernel 2.4.21 */ |
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| 416 | #ifndef PCI_DEVICE_ID_VIA_8237 |
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| 417 | #define PCI_DEVICE_ID_VIA_8237 0x3227 |
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| 418 | #endif |
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| 419 | static struct pci_device_id vt596_ids[] __initdata = { |
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| 420 | { |
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| 421 | .vendor = PCI_VENDOR_ID_VIA, |
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| 422 | .device = PCI_DEVICE_ID_VIA_82C596_3, |
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| 423 | .subvendor = PCI_ANY_ID, |
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| 424 | .subdevice = PCI_ANY_ID, |
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| 425 | .driver_data = SMBBA1, |
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| 426 | }, |
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| 427 | { |
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| 428 | .vendor = PCI_VENDOR_ID_VIA, |
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| 429 | .device = PCI_DEVICE_ID_VIA_82C596B_3, |
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| 430 | .subvendor = PCI_ANY_ID, |
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| 431 | .subdevice = PCI_ANY_ID, |
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| 432 | .driver_data = SMBBA1, |
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| 433 | }, |
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| 434 | { |
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| 435 | .vendor = PCI_VENDOR_ID_VIA, |
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| 436 | .device = PCI_DEVICE_ID_VIA_82C686_4, |
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| 437 | .subvendor = PCI_ANY_ID, |
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| 438 | .subdevice = PCI_ANY_ID, |
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| 439 | .driver_data = SMBBA1, |
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| 440 | }, |
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| 441 | { |
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| 442 | .vendor = PCI_VENDOR_ID_VIA, |
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| 443 | .device = PCI_DEVICE_ID_VIA_8233_0, |
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| 444 | .subvendor = PCI_ANY_ID, |
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| 445 | .subdevice = PCI_ANY_ID, |
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| 446 | .driver_data = SMBBA3 |
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| 447 | }, |
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| 448 | { |
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| 449 | .vendor = PCI_VENDOR_ID_VIA, |
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| 450 | .device = PCI_DEVICE_ID_VIA_8233A, |
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| 451 | .subvendor = PCI_ANY_ID, |
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| 452 | .subdevice = PCI_ANY_ID, |
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| 453 | .driver_data = SMBBA3, |
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| 454 | }, |
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| 455 | { |
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| 456 | .vendor = PCI_VENDOR_ID_VIA, |
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| 457 | .device = PCI_DEVICE_ID_VIA_8235, |
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| 458 | .subvendor = PCI_ANY_ID, |
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| 459 | .subdevice = PCI_ANY_ID, |
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| 460 | .driver_data = SMBBA3 |
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| 461 | }, |
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| 462 | { |
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| 463 | .vendor = PCI_VENDOR_ID_VIA, |
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| 464 | .device = PCI_DEVICE_ID_VIA_8237, |
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| 465 | .subvendor = PCI_ANY_ID, |
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| 466 | .subdevice = PCI_ANY_ID, |
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| 467 | .driver_data = SMBBA3 |
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| 468 | }, |
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| 469 | { |
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| 470 | .vendor = PCI_VENDOR_ID_VIA, |
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| 471 | .device = PCI_DEVICE_ID_VIA_8231_4, |
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| 472 | .subvendor = PCI_ANY_ID, |
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| 473 | .subdevice = PCI_ANY_ID, |
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| 474 | .driver_data = SMBBA1, |
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| 475 | }, |
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| 476 | { 0, } |
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| 477 | }; |
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| 478 | |
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| 479 | static int __init i2c_vt596_init(void) |
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| 480 | { |
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| 481 | struct pci_dev *dev; |
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| 482 | const struct pci_device_id *id; |
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| 483 | |
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| 484 | printk("i2c-viapro.o version %s (%s)\n", LM_VERSION, LM_DATE); |
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| 485 | pci_for_each_dev(dev) { |
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| 486 | id = pci_match_device(vt596_ids, dev); |
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| 487 | if(id) |
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| 488 | if(vt596_probe(dev, id) >= 0) |
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| 489 | return 0; |
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| 490 | } |
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| 491 | return -ENODEV; |
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| 492 | } |
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| 493 | |
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| 494 | |
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| 495 | static void __exit i2c_vt596_exit(void) |
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| 496 | { |
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| 497 | i2c_del_adapter(&vt596_adapter); |
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| 498 | release_region(vt596_smba, 8); |
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| 499 | } |
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| 500 | |
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| 501 | MODULE_AUTHOR( |
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| 502 | "Frodo Looijaard <frodol@dds.nl> and " |
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| 503 | "Philip Edelbrock <phil@netroedge.com>"); |
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| 504 | MODULE_DESCRIPTION("vt82c596 SMBus driver"); |
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| 505 | MODULE_LICENSE("GPL"); |
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| 506 | |
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| 507 | module_init(i2c_vt596_init); |
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| 508 | module_exit(i2c_vt596_exit); |
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