| 1 | /* |
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| 2 | fscpos.c - Part of lm_sensors, Linux kernel modules for hardware |
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| 3 | monitoring |
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| 4 | Copyright (c) 2001 Hermann Jung <hej@odn.de> |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2 of the License, or |
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| 9 | (at your option) any later version. |
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| 10 | |
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| 11 | This program is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with this program; if not, write to the Free Software |
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| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 19 | */ |
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| 20 | |
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| 21 | /* |
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| 22 | fujitsu siemens poseidon chip, |
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| 23 | module based on lm80.c |
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| 24 | Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
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| 25 | and Philip Edelbrock <phil@netroedge.com> |
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| 26 | */ |
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| 27 | |
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| 28 | #include <linux/version.h> |
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| 29 | #include <linux/module.h> |
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| 30 | #include <linux/slab.h> |
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| 31 | #include <linux/proc_fs.h> |
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| 32 | #include <linux/ioport.h> |
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| 33 | #include <linux/sysctl.h> |
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| 34 | #include <asm/errno.h> |
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| 35 | #include <asm/io.h> |
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| 36 | #include <linux/types.h> |
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| 37 | #include <linux/i2c.h> |
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| 38 | #include "version.h" |
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| 39 | #include "sensors.h" |
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| 40 | #include <linux/init.h> |
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| 41 | |
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| 42 | #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,2,18)) || \ |
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| 43 | (LINUX_VERSION_CODE == KERNEL_VERSION(2,3,0)) |
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| 44 | #define init_MUTEX(s) do { *(s) = MUTEX; } while(0) |
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| 45 | #endif |
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| 46 | |
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| 47 | #ifndef THIS_MODULE |
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| 48 | #define THIS_MODULE NULL |
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| 49 | #endif |
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| 50 | |
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| 51 | |
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| 52 | /* Addresses to scan */ |
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| 53 | static unsigned short normal_i2c[] = { 0x73, SENSORS_I2C_END }; |
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| 54 | static unsigned short normal_i2c_range[] = { SENSORS_I2C_END }; |
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| 55 | static unsigned int normal_isa[] = { SENSORS_ISA_END }; |
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| 56 | static unsigned int normal_isa_range[] = { SENSORS_ISA_END }; |
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| 57 | |
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| 58 | /* Insmod parameters */ |
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| 59 | SENSORS_INSMOD_1(fscpos); |
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| 60 | |
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| 61 | /* The FSCPOS registers */ |
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| 62 | |
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| 63 | /* chip identification */ |
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| 64 | #define FSCPOS_REG_IDENT_0 0x00 |
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| 65 | #define FSCPOS_REG_IDENT_1 0x01 |
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| 66 | #define FSCPOS_REG_IDENT_2 0x02 |
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| 67 | #define FSCPOS_REG_REVISION 0x03 |
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| 68 | |
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| 69 | /* global control and status */ |
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| 70 | #define FSCPOS_REG_EVENT_STATE 0x04 |
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| 71 | #define FSCPOS_REG_CONTROL 0x05 |
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| 72 | |
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| 73 | /* watchdog */ |
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| 74 | #define FSCPOS_REG_WDOG_PRESET 0x28 |
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| 75 | #define FSCPOS_REG_WDOG_STATE 0x23 |
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| 76 | #define FSCPOS_REG_WDOG_CONTROL 0x21 |
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| 77 | |
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| 78 | /* fan 0 */ |
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| 79 | #define FSCPOS_REG_FAN0_MIN 0x55 |
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| 80 | #define FSCPOS_REG_FAN0_ACT 0x0e |
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| 81 | #define FSCPOS_REG_FAN0_STATE 0x0d |
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| 82 | #define FSCPOS_REG_FAN0_RIPPLE 0x0f |
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| 83 | |
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| 84 | /* fan 1 */ |
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| 85 | #define FSCPOS_REG_FAN1_MIN 0x65 |
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| 86 | #define FSCPOS_REG_FAN1_ACT 0x6b |
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| 87 | #define FSCPOS_REG_FAN1_STATE 0x62 |
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| 88 | #define FSCPOS_REG_FAN1_RIPPLE 0x6f |
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| 89 | |
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| 90 | /* fan 2 */ |
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| 91 | /* min speed fan2 not supported */ |
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| 92 | #define FSCPOS_REG_FAN2_ACT 0xab |
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| 93 | #define FSCPOS_REG_FAN2_STATE 0xa2 |
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| 94 | #define FSCPOS_REG_FAN2_RIPPLE 0x0af |
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| 95 | |
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| 96 | /* voltage supervision */ |
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| 97 | #define FSCPOS_REG_VOLT_12 0x45 |
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| 98 | #define FSCPOS_REG_VOLT_5 0x42 |
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| 99 | #define FSCPOS_REG_VOLT_BATT 0x48 |
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| 100 | |
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| 101 | /* temperatures */ |
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| 102 | /* sensor 0 */ |
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| 103 | #define FSCPOS_REG_TEMP0_ACT 0x64 |
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| 104 | #define FSCPOS_REG_TEMP0_STATE 0x71 |
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| 105 | |
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| 106 | /* sensor 1 */ |
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| 107 | #define FSCPOS_REG_TEMP1_ACT 0x32 |
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| 108 | #define FSCPOS_REG_TEMP1_STATE 0x81 |
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| 109 | |
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| 110 | /* sensor 2 */ |
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| 111 | #define FSCPOS_REG_TEMP2_ACT 0x35 |
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| 112 | #define FSCPOS_REG_TEMP2_STATE 0x91 |
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| 113 | |
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| 114 | |
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| 115 | |
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| 116 | |
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| 117 | /* Conversions. Rounding and limit checking is only done on the TO_REG |
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| 118 | variants. Note that you should be a bit careful with which arguments |
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| 119 | these macros are called: arguments may be evaluated more than once. |
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| 120 | Fixing this is just not worth it. */ |
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| 121 | |
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| 122 | #define IN_TO_REG(val,nr) (SENSORS_LIMIT((val),0,255)) |
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| 123 | #define IN_FROM_REG(val,nr) (val) |
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| 124 | |
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| 125 | /* Initial limits */ |
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| 126 | |
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| 127 | #ifdef MODULE |
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| 128 | extern int init_module(void); |
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| 129 | extern int cleanup_module(void); |
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| 130 | #endif /* MODULE */ |
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| 131 | |
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| 132 | /* For each registered FSCPOS, we need to keep some data in memory. That |
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| 133 | data is pointed to by fscpos_list[NR]->data. The structure itself is |
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| 134 | dynamically allocated, at the same time when a new fscpos client is |
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| 135 | allocated. */ |
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| 136 | struct fscpos_data { |
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| 137 | int sysctl_id; |
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| 138 | |
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| 139 | struct semaphore update_lock; |
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| 140 | char valid; /* !=0 if following fields are valid */ |
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| 141 | unsigned long last_updated; /* In jiffies */ |
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| 142 | |
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| 143 | u8 revision; /* revision of chip */ |
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| 144 | u8 global_event; /* global event status */ |
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| 145 | u8 global_control; /* global control register */ |
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| 146 | u8 watchdog[3]; /* watchdog */ |
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| 147 | u8 volt[3]; /* 12, 5, battery current */ |
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| 148 | u8 temp_act[3]; /* temperature */ |
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| 149 | u8 temp_status[3]; /* status of sensor */ |
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| 150 | u8 fan_act[3]; /* fans revolutions per second */ |
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| 151 | u8 fan_status[3]; /* fan status */ |
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| 152 | u8 fan_min[3]; /* fan min value for rps */ |
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| 153 | u8 fan_ripple[3]; /* divider for rps */ |
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| 154 | }; |
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| 155 | |
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| 156 | |
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| 157 | #ifdef MODULE |
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| 158 | static |
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| 159 | #else |
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| 160 | extern |
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| 161 | #endif |
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| 162 | int __init sensors_fscpos_init(void); |
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| 163 | static int __init fscpos_cleanup(void); |
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| 164 | |
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| 165 | static int fscpos_attach_adapter(struct i2c_adapter *adapter); |
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| 166 | static int fscpos_detect(struct i2c_adapter *adapter, int address, |
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| 167 | unsigned short flags, int kind); |
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| 168 | static int fscpos_detach_client(struct i2c_client *client); |
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| 169 | static int fscpos_command(struct i2c_client *client, unsigned int cmd, |
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| 170 | void *arg); |
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| 171 | static void fscpos_inc_use(struct i2c_client *client); |
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| 172 | static void fscpos_dec_use(struct i2c_client *client); |
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| 173 | |
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| 174 | static int fscpos_read_value(struct i2c_client *client, u8 register); |
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| 175 | static int fscpos_write_value(struct i2c_client *client, u8 register, |
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| 176 | u8 value); |
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| 177 | static void fscpos_update_client(struct i2c_client *client); |
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| 178 | static void fscpos_init_client(struct i2c_client *client); |
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| 179 | |
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| 180 | |
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| 181 | static void fscpos_in(struct i2c_client *client, int operation, int ctl_name, |
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| 182 | int *nrels_mag, long *results); |
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| 183 | static void fscpos_fan(struct i2c_client *client, int operation, |
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| 184 | int ctl_name, int *nrels_mag, long *results); |
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| 185 | static void fscpos_fan_internal(struct i2c_client *client, int operation, |
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| 186 | int ctl_name, int *nrels_mag, long *results, |
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| 187 | int nr, int reg_state, int reg_min, int res_ripple); |
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| 188 | static void fscpos_temp(struct i2c_client *client, int operation, |
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| 189 | int ctl_name, int *nrels_mag, long *results); |
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| 190 | static void fscpos_volt(struct i2c_client *client, int operation, |
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| 191 | int ctl_name, int *nrels_mag, long *results); |
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| 192 | static void fscpos_wdog(struct i2c_client *client, int operation, |
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| 193 | int ctl_name, int *nrels_mag, long *results); |
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| 194 | |
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| 195 | static int fscpos_id = 0; |
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| 196 | |
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| 197 | static struct i2c_driver fscpos_driver = { |
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| 198 | /* name */ "FSCPOS sensor driver", |
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| 199 | /* id */ I2C_DRIVERID_FSCPOS, |
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| 200 | /* flags */ I2C_DF_NOTIFY, |
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| 201 | /* attach_adapter */ &fscpos_attach_adapter, |
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| 202 | /* detach_client */ &fscpos_detach_client, |
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| 203 | /* command */ &fscpos_command, |
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| 204 | /* inc_use */ &fscpos_inc_use, |
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| 205 | /* dec_use */ &fscpos_dec_use |
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| 206 | }; |
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| 207 | |
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| 208 | /* Used by fscpos_init/cleanup */ |
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| 209 | static int __initdata fscpos_initialized = 0; |
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| 210 | |
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| 211 | /* The /proc/sys entries */ |
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| 212 | /* These files are created for each detected FSCPOS. This is just a template; |
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| 213 | though at first sight, you might think we could use a statically |
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| 214 | allocated list, we need some way to get back to the parent - which |
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| 215 | is done through one of the 'extra' fields which are initialized |
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| 216 | when a new copy is allocated. */ |
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| 217 | static ctl_table fscpos_dir_table_template[] = { |
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| 218 | {FSCPOS_SYSCTL_REV, "rev", NULL, 0, 0444, NULL, &i2c_proc_real, |
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| 219 | &i2c_sysctl_real, NULL, &fscpos_in}, |
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| 220 | {FSCPOS_SYSCTL_EVENT, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real, |
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| 221 | &i2c_sysctl_real, NULL, &fscpos_in}, |
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| 222 | {FSCPOS_SYSCTL_CONTROL, "control", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 223 | &i2c_sysctl_real, NULL, &fscpos_in}, |
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| 224 | {FSCPOS_SYSCTL_TEMP0, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 225 | &i2c_sysctl_real, NULL, &fscpos_temp}, |
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| 226 | {FSCPOS_SYSCTL_TEMP1, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 227 | &i2c_sysctl_real, NULL, &fscpos_temp}, |
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| 228 | {FSCPOS_SYSCTL_TEMP2, "temp3", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 229 | &i2c_sysctl_real, NULL, &fscpos_temp}, |
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| 230 | {FSCPOS_SYSCTL_VOLT0, "in0", NULL, 0, 0444, NULL, &i2c_proc_real, |
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| 231 | &i2c_sysctl_real, NULL, &fscpos_volt}, |
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| 232 | {FSCPOS_SYSCTL_VOLT1, "in1", NULL, 0, 0444, NULL, &i2c_proc_real, |
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| 233 | &i2c_sysctl_real, NULL, &fscpos_volt}, |
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| 234 | {FSCPOS_SYSCTL_VOLT2, "in2", NULL, 0, 0444, NULL, &i2c_proc_real, |
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| 235 | &i2c_sysctl_real, NULL, &fscpos_volt}, |
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| 236 | {FSCPOS_SYSCTL_FAN0, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 237 | &i2c_sysctl_real, NULL, &fscpos_fan}, |
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| 238 | {FSCPOS_SYSCTL_FAN1, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 239 | &i2c_sysctl_real, NULL, &fscpos_fan}, |
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| 240 | {FSCPOS_SYSCTL_FAN2, "fan3", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 241 | &i2c_sysctl_real, NULL, &fscpos_fan}, |
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| 242 | {FSCPOS_SYSCTL_WDOG, "wdog", NULL, 0, 0644, NULL, &i2c_proc_real, |
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| 243 | &i2c_sysctl_real, NULL, &fscpos_wdog}, |
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| 244 | {0} |
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| 245 | }; |
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| 246 | |
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| 247 | int fscpos_attach_adapter(struct i2c_adapter *adapter) |
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| 248 | { |
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| 249 | return i2c_detect(adapter, &addr_data, fscpos_detect); |
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| 250 | } |
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| 251 | |
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| 252 | int fscpos_detect(struct i2c_adapter *adapter, int address, |
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| 253 | unsigned short flags, int kind) |
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| 254 | { |
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| 255 | int i; |
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| 256 | struct i2c_client *new_client; |
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| 257 | struct fscpos_data *data; |
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| 258 | int err = 0; |
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| 259 | const char *type_name, *client_name; |
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| 260 | |
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| 261 | /* Make sure we aren't probing the ISA bus!! This is just a safety check |
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| 262 | at this moment; i2c_detect really won't call us. */ |
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| 263 | #ifdef DEBUG |
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| 264 | if (i2c_is_isa_adapter(adapter)) { |
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| 265 | printk |
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| 266 | ("fscpos.o: fscpos_detect called for an ISA bus adapter?!?\n"); |
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| 267 | return 0; |
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| 268 | } |
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| 269 | #endif |
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| 270 | |
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| 271 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
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| 272 | goto ERROR0; |
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| 273 | |
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| 274 | /* OK. For now, we presume we have a valid client. We now create the |
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| 275 | client structure, even though we cannot fill it completely yet. |
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| 276 | But it allows us to access fscpos_{read,write}_value. */ |
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| 277 | if (!(new_client = kmalloc(sizeof(struct i2c_client) + |
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| 278 | sizeof(struct fscpos_data), |
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| 279 | GFP_KERNEL))) { |
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| 280 | err = -ENOMEM; |
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| 281 | goto ERROR0; |
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| 282 | } |
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| 283 | |
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| 284 | data = (struct fscpos_data *) (new_client + 1); |
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| 285 | new_client->addr = address; |
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| 286 | new_client->data = data; |
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| 287 | new_client->adapter = adapter; |
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| 288 | new_client->driver = &fscpos_driver; |
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| 289 | new_client->flags = 0; |
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| 290 | |
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| 291 | /* Do the remaining detection unless force or force_fscpos parameter */ |
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| 292 | if (kind < 0) { |
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| 293 | if (fscpos_read_value(new_client, FSCPOS_REG_IDENT_0) != 0x50) |
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| 294 | goto ERROR1; |
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| 295 | if (fscpos_read_value(new_client, FSCPOS_REG_IDENT_1) != 0x45) |
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| 296 | goto ERROR1; |
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| 297 | if (fscpos_read_value(new_client, FSCPOS_REG_IDENT_2) != 0x47) |
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| 298 | goto ERROR1; |
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| 299 | } |
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| 300 | |
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| 301 | kind = fscpos; |
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| 302 | |
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| 303 | type_name = "fscpos"; |
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| 304 | client_name = "fsc poseidon chip"; |
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| 305 | |
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| 306 | /* Fill in the remaining client fields and put it into the global list */ |
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| 307 | strcpy(new_client->name, client_name); |
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| 308 | |
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| 309 | new_client->id = fscpos_id++; |
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| 310 | data->valid = 0; |
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| 311 | init_MUTEX(&data->update_lock); |
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| 312 | |
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| 313 | /* Tell the I2C layer a new client has arrived */ |
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| 314 | if ((err = i2c_attach_client(new_client))) |
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| 315 | goto ERROR3; |
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| 316 | |
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| 317 | /* Register a new directory entry with module sensors */ |
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| 318 | if ((i = i2c_register_entry(new_client, type_name, |
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| 319 | fscpos_dir_table_template, |
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| 320 | THIS_MODULE)) < 0) { |
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| 321 | err = i; |
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| 322 | goto ERROR4; |
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| 323 | } |
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| 324 | data->sysctl_id = i; |
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| 325 | |
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| 326 | fscpos_init_client(new_client); |
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| 327 | return 0; |
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| 328 | |
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| 329 | /* OK, this is not exactly good programming practice, usually. But it is |
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| 330 | very code-efficient in this case. */ |
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| 331 | ERROR4: |
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| 332 | i2c_detach_client(new_client); |
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| 333 | ERROR3: |
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| 334 | ERROR1: |
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| 335 | kfree(new_client); |
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| 336 | ERROR0: |
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| 337 | return err; |
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| 338 | } |
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| 339 | |
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| 340 | int fscpos_detach_client(struct i2c_client *client) |
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| 341 | { |
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| 342 | int err; |
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| 343 | |
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| 344 | i2c_deregister_entry(((struct fscpos_data *) (client->data))-> |
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| 345 | sysctl_id); |
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| 346 | |
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| 347 | if ((err = i2c_detach_client(client))) { |
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| 348 | printk |
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| 349 | ("fscpos.o: Client deregistration failed, client not detached.\n"); |
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| 350 | return err; |
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| 351 | } |
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| 352 | |
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| 353 | kfree(client); |
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| 354 | |
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| 355 | return 0; |
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| 356 | } |
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| 357 | |
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| 358 | /* No commands defined yet */ |
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| 359 | int fscpos_command(struct i2c_client *client, unsigned int cmd, void *arg) |
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| 360 | { |
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| 361 | return 0; |
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| 362 | } |
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| 363 | |
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| 364 | void fscpos_inc_use(struct i2c_client *client) |
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| 365 | { |
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| 366 | #ifdef MODULE |
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| 367 | MOD_INC_USE_COUNT; |
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| 368 | #endif |
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| 369 | } |
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| 370 | |
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| 371 | void fscpos_dec_use(struct i2c_client *client) |
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| 372 | { |
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| 373 | #ifdef MODULE |
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| 374 | MOD_DEC_USE_COUNT; |
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| 375 | #endif |
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| 376 | } |
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| 377 | |
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| 378 | |
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| 379 | int fscpos_read_value(struct i2c_client *client, u8 reg) |
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| 380 | { |
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| 381 | #ifdef DEBUG |
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| 382 | printk("fscpos: read reg 0x%02x\n",reg); |
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| 383 | #endif |
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| 384 | return i2c_smbus_read_byte_data(client, reg); |
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| 385 | } |
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| 386 | |
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| 387 | int fscpos_write_value(struct i2c_client *client, u8 reg, u8 value) |
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| 388 | { |
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| 389 | #ifdef DEBUG |
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| 390 | printk("fscpos: write reg 0x%02x, val 0x%02x\n",reg, value); |
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| 391 | #endif |
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| 392 | return i2c_smbus_write_byte_data(client, reg, value); |
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| 393 | } |
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| 394 | |
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| 395 | /* Called when we have found a new FSCPOS. It should set limits, etc. */ |
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| 396 | void fscpos_init_client(struct i2c_client *client) |
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| 397 | { |
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| 398 | struct fscpos_data *data = client->data; |
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| 399 | |
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| 400 | /* read revision from chip */ |
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| 401 | data->revision = fscpos_read_value(client,FSCPOS_REG_REVISION); |
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| 402 | /* setup missing fan2_min value */ |
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| 403 | data->fan_min[2] = 0xff; |
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| 404 | } |
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| 405 | |
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| 406 | void fscpos_update_client(struct i2c_client *client) |
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| 407 | { |
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| 408 | struct fscpos_data *data = client->data; |
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| 409 | |
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| 410 | down(&data->update_lock); |
|---|
| 411 | |
|---|
| 412 | if ((jiffies - data->last_updated > 2 * HZ) || |
|---|
| 413 | (jiffies < data->last_updated) || !data->valid) { |
|---|
| 414 | |
|---|
| 415 | #ifdef DEBUG |
|---|
| 416 | printk("Starting fscpos update\n"); |
|---|
| 417 | #endif |
|---|
| 418 | data->temp_act[0] = fscpos_read_value(client, FSCPOS_REG_TEMP0_ACT); |
|---|
| 419 | data->temp_act[1] = fscpos_read_value(client, FSCPOS_REG_TEMP1_ACT); |
|---|
| 420 | data->temp_act[2] = fscpos_read_value(client, FSCPOS_REG_TEMP2_ACT); |
|---|
| 421 | data->temp_status[0] = fscpos_read_value(client, FSCPOS_REG_TEMP0_STATE); |
|---|
| 422 | data->temp_status[1] = fscpos_read_value(client, FSCPOS_REG_TEMP1_STATE); |
|---|
| 423 | data->temp_status[2] = fscpos_read_value(client, FSCPOS_REG_TEMP2_STATE); |
|---|
| 424 | |
|---|
| 425 | data->volt[0] = fscpos_read_value(client, FSCPOS_REG_VOLT_12); |
|---|
| 426 | data->volt[1] = fscpos_read_value(client, FSCPOS_REG_VOLT_5); |
|---|
| 427 | data->volt[2] = fscpos_read_value(client, FSCPOS_REG_VOLT_BATT); |
|---|
| 428 | |
|---|
| 429 | data->fan_act[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_ACT); |
|---|
| 430 | data->fan_act[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_ACT); |
|---|
| 431 | data->fan_act[2] = fscpos_read_value(client, FSCPOS_REG_FAN2_ACT); |
|---|
| 432 | data->fan_status[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_STATE); |
|---|
| 433 | data->fan_status[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_STATE); |
|---|
| 434 | data->fan_status[2] = fscpos_read_value(client, FSCPOS_REG_FAN2_STATE); |
|---|
| 435 | data->fan_min[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_MIN); |
|---|
| 436 | data->fan_min[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_MIN); |
|---|
| 437 | /* fan2_min is not supported */ |
|---|
| 438 | data->fan_ripple[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_RIPPLE); |
|---|
| 439 | data->fan_ripple[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_RIPPLE); |
|---|
| 440 | data->fan_ripple[2] = fscpos_read_value(client, FSCPOS_REG_FAN2_RIPPLE); |
|---|
| 441 | |
|---|
| 442 | data->watchdog[0] = fscpos_read_value(client, FSCPOS_REG_WDOG_PRESET); |
|---|
| 443 | data->watchdog[1] = fscpos_read_value(client, FSCPOS_REG_WDOG_STATE); |
|---|
| 444 | data->watchdog[2] = fscpos_read_value(client, FSCPOS_REG_WDOG_CONTROL); |
|---|
| 445 | |
|---|
| 446 | data->global_event = fscpos_read_value(client, FSCPOS_REG_EVENT_STATE); |
|---|
| 447 | |
|---|
| 448 | data->last_updated = jiffies; |
|---|
| 449 | data->valid = 1; |
|---|
| 450 | } |
|---|
| 451 | |
|---|
| 452 | up(&data->update_lock); |
|---|
| 453 | } |
|---|
| 454 | |
|---|
| 455 | |
|---|
| 456 | /* The next few functions are the call-back functions of the /proc/sys and |
|---|
| 457 | sysctl files. Which function is used is defined in the ctl_table in |
|---|
| 458 | the extra1 field. |
|---|
| 459 | Each function must return the magnitude (power of 10 to divide the date |
|---|
| 460 | with) if it is called with operation==SENSORS_PROC_REAL_INFO. It must |
|---|
| 461 | put a maximum of *nrels elements in results reflecting the data of this |
|---|
| 462 | file, and set *nrels to the number it actually put in it, if operation== |
|---|
| 463 | SENSORS_PROC_REAL_READ. Finally, it must get upto *nrels elements from |
|---|
| 464 | results and write them to the chip, if operations==SENSORS_PROC_REAL_WRITE. |
|---|
| 465 | Note that on SENSORS_PROC_REAL_READ, I do not check whether results is |
|---|
| 466 | large enough (by checking the incoming value of *nrels). This is not very |
|---|
| 467 | good practice, but as long as you put less than about 5 values in results, |
|---|
| 468 | you can assume it is large enough. */ |
|---|
| 469 | void fscpos_in(struct i2c_client *client, int operation, int ctl_name, |
|---|
| 470 | int *nrels_mag, long *results) |
|---|
| 471 | { |
|---|
| 472 | struct fscpos_data *data = client->data; |
|---|
| 473 | |
|---|
| 474 | if (operation == SENSORS_PROC_REAL_INFO) |
|---|
| 475 | *nrels_mag = 0; |
|---|
| 476 | else if (operation == SENSORS_PROC_REAL_READ) { |
|---|
| 477 | fscpos_update_client(client); |
|---|
| 478 | switch(ctl_name) { |
|---|
| 479 | case FSCPOS_SYSCTL_REV: |
|---|
| 480 | results[0] = data->revision ; |
|---|
| 481 | break; |
|---|
| 482 | case FSCPOS_SYSCTL_EVENT: |
|---|
| 483 | results[0] = data->global_event & 0x1f; |
|---|
| 484 | break; |
|---|
| 485 | case FSCPOS_SYSCTL_CONTROL: |
|---|
| 486 | results[0] = data->global_control & 0x01; |
|---|
| 487 | break; |
|---|
| 488 | default: |
|---|
| 489 | printk("fscpos: ctl_name %d not supported\n", |
|---|
| 490 | ctl_name); |
|---|
| 491 | *nrels_mag = 0; |
|---|
| 492 | return; |
|---|
| 493 | } |
|---|
| 494 | *nrels_mag = 1; |
|---|
| 495 | } else if (operation == SENSORS_PROC_REAL_WRITE) { |
|---|
| 496 | if((ctl_name == FSCPOS_SYSCTL_CONTROL) && (*nrels_mag >= 1)) { |
|---|
| 497 | data->global_control = (results[0] & 0x01); |
|---|
| 498 | printk("fscpos: writing 0x%02x to global_control\n", |
|---|
| 499 | data->global_control); |
|---|
| 500 | fscpos_write_value(client,FSCPOS_REG_CONTROL, |
|---|
| 501 | data->global_control); |
|---|
| 502 | } |
|---|
| 503 | else |
|---|
| 504 | printk("fscpos: writing to chip not supported\n"); |
|---|
| 505 | } |
|---|
| 506 | } |
|---|
| 507 | |
|---|
| 508 | #define TEMP_FROM_REG(val) (val-128) |
|---|
| 509 | |
|---|
| 510 | |
|---|
| 511 | void fscpos_temp(struct i2c_client *client, int operation, int ctl_name, |
|---|
| 512 | int *nrels_mag, long *results) |
|---|
| 513 | { |
|---|
| 514 | struct fscpos_data *data = client->data; |
|---|
| 515 | |
|---|
| 516 | if (operation == SENSORS_PROC_REAL_INFO) |
|---|
| 517 | *nrels_mag = 0; |
|---|
| 518 | else if (operation == SENSORS_PROC_REAL_READ) { |
|---|
| 519 | fscpos_update_client(client); |
|---|
| 520 | switch(ctl_name) { |
|---|
| 521 | case FSCPOS_SYSCTL_TEMP0: |
|---|
| 522 | results[0] = data->temp_status[0] & 0x03; |
|---|
| 523 | results[1] = TEMP_FROM_REG(data->temp_act[0]); |
|---|
| 524 | break; |
|---|
| 525 | case FSCPOS_SYSCTL_TEMP1: |
|---|
| 526 | results[0] = data->temp_status[1] & 0x03; |
|---|
| 527 | results[1] = TEMP_FROM_REG(data->temp_act[1]); |
|---|
| 528 | break; |
|---|
| 529 | case FSCPOS_SYSCTL_TEMP2: |
|---|
| 530 | results[0] = data->temp_status[2] & 0x03; |
|---|
| 531 | results[1] = TEMP_FROM_REG(data->temp_act[2]); |
|---|
| 532 | break; |
|---|
| 533 | default: |
|---|
| 534 | printk("fscpos: ctl_name %d not supported\n", |
|---|
| 535 | ctl_name); |
|---|
| 536 | *nrels_mag = 0; |
|---|
| 537 | return; |
|---|
| 538 | } |
|---|
| 539 | *nrels_mag = 2; |
|---|
| 540 | } else if (operation == SENSORS_PROC_REAL_WRITE) { |
|---|
| 541 | if(*nrels_mag >= 1) { |
|---|
| 542 | switch(ctl_name) { |
|---|
| 543 | case FSCPOS_SYSCTL_TEMP0: |
|---|
| 544 | data->temp_status[0] = |
|---|
| 545 | (data->temp_status[0] & ~0x02) |
|---|
| 546 | | (results[0] & 0x02); |
|---|
| 547 | printk("fscpos: writing value 0x%02x " |
|---|
| 548 | "to temp0_status\n", |
|---|
| 549 | data->temp_status[0]); |
|---|
| 550 | fscpos_write_value(client, |
|---|
| 551 | FSCPOS_REG_TEMP0_STATE, |
|---|
| 552 | data->temp_status[0] & 0x02); |
|---|
| 553 | break; |
|---|
| 554 | case FSCPOS_SYSCTL_TEMP1: |
|---|
| 555 | data->temp_status[1] = (data->temp_status[1] & ~0x02) | (results[0] & 0x02); |
|---|
| 556 | printk("fscpos: writing value 0x%02x to temp1_status\n", data->temp_status[1]); |
|---|
| 557 | fscpos_write_value(client,FSCPOS_REG_TEMP1_STATE, |
|---|
| 558 | data->temp_status[1] & 0x02); |
|---|
| 559 | break; |
|---|
| 560 | case FSCPOS_SYSCTL_TEMP2: |
|---|
| 561 | data->temp_status[2] = (data->temp_status[2] & ~0x02) | (results[0] & 0x02); |
|---|
| 562 | printk("fscpos: writing value 0x%02x to temp2_status\n", data->temp_status[2]); |
|---|
| 563 | fscpos_write_value(client,FSCPOS_REG_TEMP2_STATE, |
|---|
| 564 | data->temp_status[2] & 0x02); |
|---|
| 565 | break; |
|---|
| 566 | default: |
|---|
| 567 | printk("fscpos: ctl_name %d not supported\n",ctl_name); |
|---|
| 568 | } |
|---|
| 569 | } |
|---|
| 570 | else |
|---|
| 571 | printk("fscpos: writing to chip not supported\n"); |
|---|
| 572 | } |
|---|
| 573 | } |
|---|
| 574 | |
|---|
| 575 | #define VOLT_FROM_REG(val,mult) (val*mult/255) |
|---|
| 576 | |
|---|
| 577 | void fscpos_volt(struct i2c_client *client, int operation, int ctl_name, |
|---|
| 578 | int *nrels_mag, long *results) |
|---|
| 579 | { |
|---|
| 580 | struct fscpos_data *data = client->data; |
|---|
| 581 | if (operation == SENSORS_PROC_REAL_INFO) |
|---|
| 582 | *nrels_mag = 2; |
|---|
| 583 | else if (operation == SENSORS_PROC_REAL_READ) { |
|---|
| 584 | fscpos_update_client(client); |
|---|
| 585 | switch(ctl_name) { |
|---|
| 586 | case FSCPOS_SYSCTL_VOLT0: |
|---|
| 587 | results[0] = VOLT_FROM_REG(data->volt[0],1420); |
|---|
| 588 | break; |
|---|
| 589 | case FSCPOS_SYSCTL_VOLT1: |
|---|
| 590 | results[0] = VOLT_FROM_REG(data->volt[1],660); |
|---|
| 591 | break; |
|---|
| 592 | case FSCPOS_SYSCTL_VOLT2: |
|---|
| 593 | results[0] = VOLT_FROM_REG(data->volt[2],330); |
|---|
| 594 | break; |
|---|
| 595 | default: |
|---|
| 596 | printk("fscpos: ctl_name %d not supported\n", |
|---|
| 597 | ctl_name); |
|---|
| 598 | *nrels_mag = 0; |
|---|
| 599 | return; |
|---|
| 600 | } |
|---|
| 601 | *nrels_mag = 1; |
|---|
| 602 | } else if (operation == SENSORS_PROC_REAL_WRITE) { |
|---|
| 603 | printk("fscpos: writing to chip not supported\n"); |
|---|
| 604 | } |
|---|
| 605 | } |
|---|
| 606 | |
|---|
| 607 | void fscpos_fan(struct i2c_client *client, int operation, int ctl_name, |
|---|
| 608 | int *nrels_mag, long *results) |
|---|
| 609 | { |
|---|
| 610 | |
|---|
| 611 | switch(ctl_name) { |
|---|
| 612 | case FSCPOS_SYSCTL_FAN0: |
|---|
| 613 | fscpos_fan_internal(client,operation,ctl_name,nrels_mag,results, |
|---|
| 614 | 0,FSCPOS_REG_FAN0_STATE,FSCPOS_REG_FAN0_MIN, |
|---|
| 615 | FSCPOS_REG_FAN0_RIPPLE); |
|---|
| 616 | break; |
|---|
| 617 | case FSCPOS_SYSCTL_FAN1: |
|---|
| 618 | fscpos_fan_internal(client,operation,ctl_name,nrels_mag,results, |
|---|
| 619 | 1,FSCPOS_REG_FAN1_STATE,FSCPOS_REG_FAN1_MIN, |
|---|
| 620 | FSCPOS_REG_FAN1_RIPPLE); |
|---|
| 621 | break; |
|---|
| 622 | case FSCPOS_SYSCTL_FAN2: |
|---|
| 623 | fscpos_fan_internal(client,operation,ctl_name,nrels_mag,results, |
|---|
| 624 | 2,FSCPOS_REG_FAN2_STATE,0xff, |
|---|
| 625 | FSCPOS_REG_FAN2_RIPPLE); |
|---|
| 626 | break; |
|---|
| 627 | default: |
|---|
| 628 | printk("fscpos: illegal fan nr %d\n",ctl_name); |
|---|
| 629 | } |
|---|
| 630 | } |
|---|
| 631 | |
|---|
| 632 | #define RPM_FROM_REG(val) (val*60) |
|---|
| 633 | |
|---|
| 634 | void fscpos_fan_internal(struct i2c_client *client, int operation, int ctl_name, |
|---|
| 635 | int *nrels_mag, long *results, int nr, |
|---|
| 636 | int reg_state, int reg_min, int reg_ripple ) |
|---|
| 637 | { |
|---|
| 638 | struct fscpos_data *data = client->data; |
|---|
| 639 | |
|---|
| 640 | if (operation == SENSORS_PROC_REAL_INFO) |
|---|
| 641 | *nrels_mag = 0; |
|---|
| 642 | else if (operation == SENSORS_PROC_REAL_READ) { |
|---|
| 643 | fscpos_update_client(client); |
|---|
| 644 | results[0] = data->fan_status[nr] & 0x04; |
|---|
| 645 | results[1] = data->fan_min[nr]; |
|---|
| 646 | results[2] = data->fan_ripple[nr] & 0x03; |
|---|
| 647 | results[3] = RPM_FROM_REG(data->fan_act[nr]); |
|---|
| 648 | *nrels_mag = 4; |
|---|
| 649 | } else if (operation == SENSORS_PROC_REAL_WRITE) { |
|---|
| 650 | if(*nrels_mag >= 1) { |
|---|
| 651 | data->fan_status[nr] = results[0] & 0x04; |
|---|
| 652 | printk("fscpos: writing value 0x%02x to fan%d_status\n", |
|---|
| 653 | data->fan_status[nr],nr); |
|---|
| 654 | fscpos_write_value(client,reg_state, |
|---|
| 655 | data->fan_status[nr]); |
|---|
| 656 | } |
|---|
| 657 | if((*nrels_mag >= 2) && (nr < 2)) { |
|---|
| 658 | /* minimal speed for fan2 not supported */ |
|---|
| 659 | data->fan_min[nr] = results[1]; |
|---|
| 660 | printk("fscpos: writing value 0x%02x to fan%d_min\n", |
|---|
| 661 | data->fan_min[nr],nr); |
|---|
| 662 | fscpos_write_value(client,reg_min, |
|---|
| 663 | data->fan_min[nr]); |
|---|
| 664 | } |
|---|
| 665 | if(*nrels_mag >= 3) { |
|---|
| 666 | if((results[2] & 0x03) == 0) { |
|---|
| 667 | printk("fscpos: fan%d ripple 0 not allowed\n",nr); |
|---|
| 668 | return; |
|---|
| 669 | } |
|---|
| 670 | data->fan_ripple[nr] = results[2] & 0x03; |
|---|
| 671 | printk("fscpos: writing value 0x%02x to fan%d_ripple\n", |
|---|
| 672 | data->fan_ripple[nr],nr); |
|---|
| 673 | fscpos_write_value(client,reg_ripple, |
|---|
| 674 | data->fan_ripple[nr]); |
|---|
| 675 | } |
|---|
| 676 | } |
|---|
| 677 | } |
|---|
| 678 | |
|---|
| 679 | void fscpos_wdog(struct i2c_client *client, int operation, int ctl_name, |
|---|
| 680 | int *nrels_mag, long *results) |
|---|
| 681 | { |
|---|
| 682 | struct fscpos_data *data = client->data; |
|---|
| 683 | |
|---|
| 684 | if (operation == SENSORS_PROC_REAL_INFO) |
|---|
| 685 | *nrels_mag = 0; |
|---|
| 686 | else if (operation == SENSORS_PROC_REAL_READ) { |
|---|
| 687 | fscpos_update_client(client); |
|---|
| 688 | results[0] = data->watchdog[0] ; |
|---|
| 689 | results[1] = data->watchdog[1] & 0x02; |
|---|
| 690 | results[2] = data->watchdog[2] & 0xb0; |
|---|
| 691 | *nrels_mag = 3; |
|---|
| 692 | } else if (operation == SENSORS_PROC_REAL_WRITE) { |
|---|
| 693 | if (*nrels_mag >= 1) { |
|---|
| 694 | data->watchdog[0] = results[0] & 0xff; |
|---|
| 695 | printk("fscpos: writing value 0x%02x to wdog_preset\n", |
|---|
| 696 | data->watchdog[0]); |
|---|
| 697 | fscpos_write_value(client,FSCPOS_REG_WDOG_PRESET, |
|---|
| 698 | data->watchdog[0]); |
|---|
| 699 | } |
|---|
| 700 | if (*nrels_mag >= 2) { |
|---|
| 701 | data->watchdog[1] = results[1] & 0x02; |
|---|
| 702 | printk("fscpos: writing value 0x%02x to wdog_state\n", |
|---|
| 703 | data->watchdog[1]); |
|---|
| 704 | fscpos_write_value(client,FSCPOS_REG_WDOG_STATE, |
|---|
| 705 | data->watchdog[1]); |
|---|
| 706 | } |
|---|
| 707 | if (*nrels_mag >= 3) { |
|---|
| 708 | data->watchdog[2] = results[2] & 0xb0; |
|---|
| 709 | printk("fscpos: writing value 0x%02x to wdog_control\n", |
|---|
| 710 | data->watchdog[2]); |
|---|
| 711 | fscpos_write_value(client,FSCPOS_REG_WDOG_CONTROL, |
|---|
| 712 | data->watchdog[2]); |
|---|
| 713 | } |
|---|
| 714 | } |
|---|
| 715 | } |
|---|
| 716 | |
|---|
| 717 | int __init sensors_fscpos_init(void) |
|---|
| 718 | { |
|---|
| 719 | int res; |
|---|
| 720 | |
|---|
| 721 | printk("fscpos.o version %s (%s)\n", LM_VERSION, LM_DATE); |
|---|
| 722 | fscpos_initialized = 0; |
|---|
| 723 | |
|---|
| 724 | if ((res = i2c_add_driver(&fscpos_driver))) { |
|---|
| 725 | printk |
|---|
| 726 | ("fscpos.o: Driver registration failed, module not inserted.\n"); |
|---|
| 727 | fscpos_cleanup(); |
|---|
| 728 | return res; |
|---|
| 729 | } |
|---|
| 730 | fscpos_initialized++; |
|---|
| 731 | return 0; |
|---|
| 732 | } |
|---|
| 733 | |
|---|
| 734 | int __init fscpos_cleanup(void) |
|---|
| 735 | { |
|---|
| 736 | int res; |
|---|
| 737 | |
|---|
| 738 | if (fscpos_initialized >= 1) { |
|---|
| 739 | if ((res = i2c_del_driver(&fscpos_driver))) { |
|---|
| 740 | printk |
|---|
| 741 | ("fscpos.o: Driver deregistration failed, module not removed.\n"); |
|---|
| 742 | return res; |
|---|
| 743 | } |
|---|
| 744 | fscpos_initialized--; |
|---|
| 745 | } |
|---|
| 746 | return 0; |
|---|
| 747 | } |
|---|
| 748 | |
|---|
| 749 | EXPORT_NO_SYMBOLS; |
|---|
| 750 | |
|---|
| 751 | #ifdef MODULE |
|---|
| 752 | |
|---|
| 753 | MODULE_AUTHOR |
|---|
| 754 | ("Hermann Jung <hej@odn.de> based on work from Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock <phil@netroedge.com>"); |
|---|
| 755 | MODULE_DESCRIPTION("fujitsu siemens poseidon chip driver"); |
|---|
| 756 | |
|---|
| 757 | int init_module(void) |
|---|
| 758 | { |
|---|
| 759 | return sensors_fscpos_init(); |
|---|
| 760 | } |
|---|
| 761 | |
|---|
| 762 | int cleanup_module(void) |
|---|
| 763 | { |
|---|
| 764 | return fscpos_cleanup(); |
|---|
| 765 | } |
|---|
| 766 | |
|---|
| 767 | #endif /* MODULE */ |
|---|