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2a1ed07718
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
933 lines
25 KiB
C
933 lines
25 KiB
C
/*
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* sis5595.c - Part of lm_sensors, Linux kernel modules
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* for hardware monitoring
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*
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* Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
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* Kyösti Mälkki <kmalkki@cc.hut.fi>, and
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* Mark D. Studebaker <mdsxyz123@yahoo.com>
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* Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
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* the help of Jean Delvare <jdelvare@suse.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* SiS southbridge has a LM78-like chip integrated on the same IC.
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* This driver is a customized copy of lm78.c
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*
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* Supports following revisions:
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* Version PCI ID PCI Revision
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* 1 1039/0008 AF or less
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* 2 1039/0008 B0 or greater
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*
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* Note: these chips contain a 0008 device which is incompatible with the
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* 5595. We recognize these by the presence of the listed
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* "blacklist" PCI ID and refuse to load.
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*
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* NOT SUPPORTED PCI ID BLACKLIST PCI ID
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* 540 0008 0540
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* 550 0008 0550
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* 5513 0008 5511
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* 5581 0008 5597
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* 5582 0008 5597
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* 5597 0008 5597
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* 5598 0008 5597/5598
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* 630 0008 0630
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* 645 0008 0645
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* 730 0008 0730
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* 735 0008 0735
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/ioport.h>
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#include <linux/pci.h>
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#include <linux/platform_device.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/jiffies.h>
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#include <linux/mutex.h>
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#include <linux/sysfs.h>
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#include <linux/acpi.h>
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#include <linux/io.h>
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/*
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* If force_addr is set to anything different from 0, we forcibly enable
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* the device at the given address.
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*/
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static u16 force_addr;
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module_param(force_addr, ushort, 0);
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MODULE_PARM_DESC(force_addr,
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"Initialize the base address of the sensors");
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static struct platform_device *pdev;
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/* Many SIS5595 constants specified below */
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/* Length of ISA address segment */
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#define SIS5595_EXTENT 8
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/* PCI Config Registers */
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#define SIS5595_BASE_REG 0x68
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#define SIS5595_PIN_REG 0x7A
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#define SIS5595_ENABLE_REG 0x7B
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/* Where are the ISA address/data registers relative to the base address */
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#define SIS5595_ADDR_REG_OFFSET 5
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#define SIS5595_DATA_REG_OFFSET 6
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/* The SIS5595 registers */
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#define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
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#define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
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#define SIS5595_REG_IN(nr) (0x20 + (nr))
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#define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
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#define SIS5595_REG_FAN(nr) (0x28 + (nr))
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/*
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* On the first version of the chip, the temp registers are separate.
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* On the second version,
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* TEMP pin is shared with IN4, configured in PCI register 0x7A.
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* The registers are the same as well.
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* OVER and HYST are really MAX and MIN.
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*/
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#define REV2MIN 0xb0
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#define SIS5595_REG_TEMP (((data->revision) >= REV2MIN) ? \
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SIS5595_REG_IN(4) : 0x27)
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#define SIS5595_REG_TEMP_OVER (((data->revision) >= REV2MIN) ? \
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SIS5595_REG_IN_MAX(4) : 0x39)
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#define SIS5595_REG_TEMP_HYST (((data->revision) >= REV2MIN) ? \
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SIS5595_REG_IN_MIN(4) : 0x3a)
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#define SIS5595_REG_CONFIG 0x40
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#define SIS5595_REG_ALARM1 0x41
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#define SIS5595_REG_ALARM2 0x42
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#define SIS5595_REG_FANDIV 0x47
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/*
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* Conversions. Limit checking is only done on the TO_REG
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* variants.
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*/
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/*
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* IN: mV, (0V to 4.08V)
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* REG: 16mV/bit
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*/
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static inline u8 IN_TO_REG(unsigned long val)
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{
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unsigned long nval = clamp_val(val, 0, 4080);
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return (nval + 8) / 16;
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}
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#define IN_FROM_REG(val) ((val) * 16)
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static inline u8 FAN_TO_REG(long rpm, int div)
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{
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if (rpm <= 0)
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return 255;
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if (rpm > 1350000)
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return 1;
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return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
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}
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static inline int FAN_FROM_REG(u8 val, int div)
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{
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return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div);
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}
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/*
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* TEMP: mC (-54.12C to +157.53C)
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* REG: 0.83C/bit + 52.12, two's complement
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*/
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static inline int TEMP_FROM_REG(s8 val)
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{
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return val * 830 + 52120;
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}
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static inline s8 TEMP_TO_REG(long val)
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{
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int nval = clamp_val(val, -54120, 157530) ;
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return nval < 0 ? (nval - 5212 - 415) / 830 : (nval - 5212 + 415) / 830;
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}
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/*
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* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
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* REG: 0, 1, 2, or 3 (respectively) (defaults to 1)
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*/
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static inline u8 DIV_TO_REG(int val)
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{
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return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1;
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}
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#define DIV_FROM_REG(val) (1 << (val))
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/*
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* For each registered chip, we need to keep some data in memory.
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* The structure is dynamically allocated.
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*/
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struct sis5595_data {
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unsigned short addr;
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const char *name;
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struct device *hwmon_dev;
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struct mutex lock;
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struct mutex update_lock;
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char valid; /* !=0 if following fields are valid */
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unsigned long last_updated; /* In jiffies */
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char maxins; /* == 3 if temp enabled, otherwise == 4 */
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u8 revision; /* Reg. value */
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u8 in[5]; /* Register value */
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u8 in_max[5]; /* Register value */
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u8 in_min[5]; /* Register value */
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u8 fan[2]; /* Register value */
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u8 fan_min[2]; /* Register value */
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s8 temp; /* Register value */
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s8 temp_over; /* Register value */
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s8 temp_hyst; /* Register value */
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u8 fan_div[2]; /* Register encoding, shifted right */
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u16 alarms; /* Register encoding, combined */
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};
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static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
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static int sis5595_probe(struct platform_device *pdev);
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static int sis5595_remove(struct platform_device *pdev);
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static int sis5595_read_value(struct sis5595_data *data, u8 reg);
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static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value);
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static struct sis5595_data *sis5595_update_device(struct device *dev);
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static void sis5595_init_device(struct sis5595_data *data);
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static struct platform_driver sis5595_driver = {
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.driver = {
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.name = "sis5595",
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},
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.probe = sis5595_probe,
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.remove = sis5595_remove,
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};
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/* 4 Voltages */
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static ssize_t show_in(struct device *dev, struct device_attribute *da,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
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}
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static ssize_t show_in_min(struct device *dev, struct device_attribute *da,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
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}
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static ssize_t show_in_max(struct device *dev, struct device_attribute *da,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
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}
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static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
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const char *buf, size_t count)
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{
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struct sis5595_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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data->in_min[nr] = IN_TO_REG(val);
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sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t set_in_max(struct device *dev, struct device_attribute *da,
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const char *buf, size_t count)
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{
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struct sis5595_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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data->in_max[nr] = IN_TO_REG(val);
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sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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#define show_in_offset(offset) \
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static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
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show_in, NULL, offset); \
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static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
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show_in_min, set_in_min, offset); \
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static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
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show_in_max, set_in_max, offset);
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show_in_offset(0);
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show_in_offset(1);
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show_in_offset(2);
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show_in_offset(3);
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show_in_offset(4);
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/* Temperature */
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static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
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}
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static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
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}
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static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sis5595_data *data = dev_get_drvdata(dev);
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long val;
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int err;
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err = kstrtol(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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data->temp_over = TEMP_TO_REG(val);
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sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
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}
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static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sis5595_data *data = dev_get_drvdata(dev);
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long val;
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int err;
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err = kstrtol(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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data->temp_hyst = TEMP_TO_REG(val);
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sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
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static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
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show_temp_over, set_temp_over);
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static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
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show_temp_hyst, set_temp_hyst);
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/* 2 Fans */
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static ssize_t show_fan(struct device *dev, struct device_attribute *da,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
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DIV_FROM_REG(data->fan_div[nr])));
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}
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static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
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DIV_FROM_REG(data->fan_div[nr])));
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}
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static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
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const char *buf, size_t count)
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{
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struct sis5595_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
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sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
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char *buf)
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{
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struct sis5595_data *data = sis5595_update_device(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
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}
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/*
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* Note: we save and restore the fan minimum here, because its value is
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* determined in part by the fan divisor. This follows the principle of
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* least surprise; the user doesn't expect the fan minimum to change just
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* because the divisor changed.
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*/
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static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
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const char *buf, size_t count)
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{
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struct sis5595_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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int nr = attr->index;
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unsigned long min;
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int reg;
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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min = FAN_FROM_REG(data->fan_min[nr],
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DIV_FROM_REG(data->fan_div[nr]));
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reg = sis5595_read_value(data, SIS5595_REG_FANDIV);
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switch (val) {
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case 1:
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data->fan_div[nr] = 0;
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break;
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case 2:
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data->fan_div[nr] = 1;
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break;
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case 4:
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data->fan_div[nr] = 2;
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break;
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case 8:
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data->fan_div[nr] = 3;
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break;
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default:
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dev_err(dev,
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"fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n",
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val);
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mutex_unlock(&data->update_lock);
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return -EINVAL;
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}
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switch (nr) {
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case 0:
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reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
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break;
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case 1:
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|
reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
|
|
break;
|
|
}
|
|
sis5595_write_value(data, SIS5595_REG_FANDIV, reg);
|
|
data->fan_min[nr] =
|
|
FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
|
|
sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define show_fan_offset(offset) \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
|
|
show_fan, NULL, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
|
|
show_fan_min, set_fan_min, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
|
|
show_fan_div, set_fan_div, offset - 1);
|
|
|
|
show_fan_offset(1);
|
|
show_fan_offset(2);
|
|
|
|
/* Alarms */
|
|
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct sis5595_data *data = sis5595_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->alarms);
|
|
}
|
|
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
|
|
|
|
static ssize_t show_alarm(struct device *dev, struct device_attribute *da,
|
|
char *buf)
|
|
{
|
|
struct sis5595_data *data = sis5595_update_device(dev);
|
|
int nr = to_sensor_dev_attr(da)->index;
|
|
return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
|
|
}
|
|
static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 15);
|
|
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 15);
|
|
|
|
static ssize_t show_name(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct sis5595_data *data = dev_get_drvdata(dev);
|
|
return sprintf(buf, "%s\n", data->name);
|
|
}
|
|
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
|
|
|
static struct attribute *sis5595_attributes[] = {
|
|
&sensor_dev_attr_in0_input.dev_attr.attr,
|
|
&sensor_dev_attr_in0_min.dev_attr.attr,
|
|
&sensor_dev_attr_in0_max.dev_attr.attr,
|
|
&sensor_dev_attr_in0_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
&sensor_dev_attr_in1_min.dev_attr.attr,
|
|
&sensor_dev_attr_in1_max.dev_attr.attr,
|
|
&sensor_dev_attr_in1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
&sensor_dev_attr_in2_min.dev_attr.attr,
|
|
&sensor_dev_attr_in2_max.dev_attr.attr,
|
|
&sensor_dev_attr_in2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in3_input.dev_attr.attr,
|
|
&sensor_dev_attr_in3_min.dev_attr.attr,
|
|
&sensor_dev_attr_in3_max.dev_attr.attr,
|
|
&sensor_dev_attr_in3_alarm.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
|
|
|
|
&dev_attr_alarms.attr,
|
|
&dev_attr_name.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group sis5595_group = {
|
|
.attrs = sis5595_attributes,
|
|
};
|
|
|
|
static struct attribute *sis5595_attributes_in4[] = {
|
|
&sensor_dev_attr_in4_input.dev_attr.attr,
|
|
&sensor_dev_attr_in4_min.dev_attr.attr,
|
|
&sensor_dev_attr_in4_max.dev_attr.attr,
|
|
&sensor_dev_attr_in4_alarm.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group sis5595_group_in4 = {
|
|
.attrs = sis5595_attributes_in4,
|
|
};
|
|
|
|
static struct attribute *sis5595_attributes_temp1[] = {
|
|
&dev_attr_temp1_input.attr,
|
|
&dev_attr_temp1_max.attr,
|
|
&dev_attr_temp1_max_hyst.attr,
|
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group sis5595_group_temp1 = {
|
|
.attrs = sis5595_attributes_temp1,
|
|
};
|
|
|
|
/* This is called when the module is loaded */
|
|
static int sis5595_probe(struct platform_device *pdev)
|
|
{
|
|
int err = 0;
|
|
int i;
|
|
struct sis5595_data *data;
|
|
struct resource *res;
|
|
char val;
|
|
|
|
/* Reserve the ISA region */
|
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
|
if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT,
|
|
sis5595_driver.driver.name))
|
|
return -EBUSY;
|
|
|
|
data = devm_kzalloc(&pdev->dev, sizeof(struct sis5595_data),
|
|
GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&data->lock);
|
|
mutex_init(&data->update_lock);
|
|
data->addr = res->start;
|
|
data->name = "sis5595";
|
|
platform_set_drvdata(pdev, data);
|
|
|
|
/*
|
|
* Check revision and pin registers to determine whether 4 or 5 voltages
|
|
*/
|
|
data->revision = s_bridge->revision;
|
|
/* 4 voltages, 1 temp */
|
|
data->maxins = 3;
|
|
if (data->revision >= REV2MIN) {
|
|
pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
|
|
if (!(val & 0x80))
|
|
/* 5 voltages, no temps */
|
|
data->maxins = 4;
|
|
}
|
|
|
|
/* Initialize the SIS5595 chip */
|
|
sis5595_init_device(data);
|
|
|
|
/* A few vars need to be filled upon startup */
|
|
for (i = 0; i < 2; i++) {
|
|
data->fan_min[i] = sis5595_read_value(data,
|
|
SIS5595_REG_FAN_MIN(i));
|
|
}
|
|
|
|
/* Register sysfs hooks */
|
|
err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group);
|
|
if (err)
|
|
return err;
|
|
if (data->maxins == 4) {
|
|
err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_in4);
|
|
if (err)
|
|
goto exit_remove_files;
|
|
} else {
|
|
err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_temp1);
|
|
if (err)
|
|
goto exit_remove_files;
|
|
}
|
|
|
|
data->hwmon_dev = hwmon_device_register(&pdev->dev);
|
|
if (IS_ERR(data->hwmon_dev)) {
|
|
err = PTR_ERR(data->hwmon_dev);
|
|
goto exit_remove_files;
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit_remove_files:
|
|
sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
|
|
sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
|
|
sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
|
|
return err;
|
|
}
|
|
|
|
static int sis5595_remove(struct platform_device *pdev)
|
|
{
|
|
struct sis5595_data *data = platform_get_drvdata(pdev);
|
|
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
|
|
sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
|
|
sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* ISA access must be locked explicitly. */
|
|
static int sis5595_read_value(struct sis5595_data *data, u8 reg)
|
|
{
|
|
int res;
|
|
|
|
mutex_lock(&data->lock);
|
|
outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
|
|
res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET);
|
|
mutex_unlock(&data->lock);
|
|
return res;
|
|
}
|
|
|
|
static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value)
|
|
{
|
|
mutex_lock(&data->lock);
|
|
outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
|
|
outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET);
|
|
mutex_unlock(&data->lock);
|
|
}
|
|
|
|
/* Called when we have found a new SIS5595. */
|
|
static void sis5595_init_device(struct sis5595_data *data)
|
|
{
|
|
u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG);
|
|
if (!(config & 0x01))
|
|
sis5595_write_value(data, SIS5595_REG_CONFIG,
|
|
(config & 0xf7) | 0x01);
|
|
}
|
|
|
|
static struct sis5595_data *sis5595_update_device(struct device *dev)
|
|
{
|
|
struct sis5595_data *data = dev_get_drvdata(dev);
|
|
int i;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|
|
|| !data->valid) {
|
|
|
|
for (i = 0; i <= data->maxins; i++) {
|
|
data->in[i] =
|
|
sis5595_read_value(data, SIS5595_REG_IN(i));
|
|
data->in_min[i] =
|
|
sis5595_read_value(data,
|
|
SIS5595_REG_IN_MIN(i));
|
|
data->in_max[i] =
|
|
sis5595_read_value(data,
|
|
SIS5595_REG_IN_MAX(i));
|
|
}
|
|
for (i = 0; i < 2; i++) {
|
|
data->fan[i] =
|
|
sis5595_read_value(data, SIS5595_REG_FAN(i));
|
|
data->fan_min[i] =
|
|
sis5595_read_value(data,
|
|
SIS5595_REG_FAN_MIN(i));
|
|
}
|
|
if (data->maxins == 3) {
|
|
data->temp =
|
|
sis5595_read_value(data, SIS5595_REG_TEMP);
|
|
data->temp_over =
|
|
sis5595_read_value(data, SIS5595_REG_TEMP_OVER);
|
|
data->temp_hyst =
|
|
sis5595_read_value(data, SIS5595_REG_TEMP_HYST);
|
|
}
|
|
i = sis5595_read_value(data, SIS5595_REG_FANDIV);
|
|
data->fan_div[0] = (i >> 4) & 0x03;
|
|
data->fan_div[1] = i >> 6;
|
|
data->alarms =
|
|
sis5595_read_value(data, SIS5595_REG_ALARM1) |
|
|
(sis5595_read_value(data, SIS5595_REG_ALARM2) << 8);
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static const struct pci_device_id sis5595_pci_ids[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
|
|
{ 0, }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
|
|
|
|
static int blacklist[] = {
|
|
PCI_DEVICE_ID_SI_540,
|
|
PCI_DEVICE_ID_SI_550,
|
|
PCI_DEVICE_ID_SI_630,
|
|
PCI_DEVICE_ID_SI_645,
|
|
PCI_DEVICE_ID_SI_730,
|
|
PCI_DEVICE_ID_SI_735,
|
|
PCI_DEVICE_ID_SI_5511, /*
|
|
* 5513 chip has the 0008 device but
|
|
* that ID shows up in other chips so we
|
|
* use the 5511 ID for recognition
|
|
*/
|
|
PCI_DEVICE_ID_SI_5597,
|
|
PCI_DEVICE_ID_SI_5598,
|
|
0 };
|
|
|
|
static int sis5595_device_add(unsigned short address)
|
|
{
|
|
struct resource res = {
|
|
.start = address,
|
|
.end = address + SIS5595_EXTENT - 1,
|
|
.name = "sis5595",
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
int err;
|
|
|
|
err = acpi_check_resource_conflict(&res);
|
|
if (err)
|
|
goto exit;
|
|
|
|
pdev = platform_device_alloc("sis5595", address);
|
|
if (!pdev) {
|
|
err = -ENOMEM;
|
|
pr_err("Device allocation failed\n");
|
|
goto exit;
|
|
}
|
|
|
|
err = platform_device_add_resources(pdev, &res, 1);
|
|
if (err) {
|
|
pr_err("Device resource addition failed (%d)\n", err);
|
|
goto exit_device_put;
|
|
}
|
|
|
|
err = platform_device_add(pdev);
|
|
if (err) {
|
|
pr_err("Device addition failed (%d)\n", err);
|
|
goto exit_device_put;
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit_device_put:
|
|
platform_device_put(pdev);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static int sis5595_pci_probe(struct pci_dev *dev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
u16 address;
|
|
u8 enable;
|
|
int *i;
|
|
|
|
for (i = blacklist; *i != 0; i++) {
|
|
struct pci_dev *d;
|
|
d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
|
|
if (d) {
|
|
dev_err(&d->dev,
|
|
"Looked for SIS5595 but found unsupported device %.4x\n",
|
|
*i);
|
|
pci_dev_put(d);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
force_addr &= ~(SIS5595_EXTENT - 1);
|
|
if (force_addr) {
|
|
dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr);
|
|
pci_write_config_word(dev, SIS5595_BASE_REG, force_addr);
|
|
}
|
|
|
|
if (PCIBIOS_SUCCESSFUL !=
|
|
pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
|
|
dev_err(&dev->dev, "Failed to read ISA address\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
address &= ~(SIS5595_EXTENT - 1);
|
|
if (!address) {
|
|
dev_err(&dev->dev,
|
|
"Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
|
|
return -ENODEV;
|
|
}
|
|
if (force_addr && address != force_addr) {
|
|
/* doesn't work for some chips? */
|
|
dev_err(&dev->dev, "Failed to force ISA address\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (PCIBIOS_SUCCESSFUL !=
|
|
pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
|
|
dev_err(&dev->dev, "Failed to read enable register\n");
|
|
return -ENODEV;
|
|
}
|
|
if (!(enable & 0x80)) {
|
|
if ((PCIBIOS_SUCCESSFUL !=
|
|
pci_write_config_byte(dev, SIS5595_ENABLE_REG,
|
|
enable | 0x80))
|
|
|| (PCIBIOS_SUCCESSFUL !=
|
|
pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
|
|
|| (!(enable & 0x80))) {
|
|
/* doesn't work for some chips! */
|
|
dev_err(&dev->dev, "Failed to enable HWM device\n");
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
if (platform_driver_register(&sis5595_driver)) {
|
|
dev_dbg(&dev->dev, "Failed to register sis5595 driver\n");
|
|
goto exit;
|
|
}
|
|
|
|
s_bridge = pci_dev_get(dev);
|
|
/* Sets global pdev as a side effect */
|
|
if (sis5595_device_add(address))
|
|
goto exit_unregister;
|
|
|
|
/*
|
|
* Always return failure here. This is to allow other drivers to bind
|
|
* to this pci device. We don't really want to have control over the
|
|
* pci device, we only wanted to read as few register values from it.
|
|
*/
|
|
return -ENODEV;
|
|
|
|
exit_unregister:
|
|
pci_dev_put(dev);
|
|
platform_driver_unregister(&sis5595_driver);
|
|
exit:
|
|
return -ENODEV;
|
|
}
|
|
|
|
static struct pci_driver sis5595_pci_driver = {
|
|
.name = "sis5595",
|
|
.id_table = sis5595_pci_ids,
|
|
.probe = sis5595_pci_probe,
|
|
};
|
|
|
|
static int __init sm_sis5595_init(void)
|
|
{
|
|
return pci_register_driver(&sis5595_pci_driver);
|
|
}
|
|
|
|
static void __exit sm_sis5595_exit(void)
|
|
{
|
|
pci_unregister_driver(&sis5595_pci_driver);
|
|
if (s_bridge != NULL) {
|
|
platform_device_unregister(pdev);
|
|
platform_driver_unregister(&sis5595_driver);
|
|
pci_dev_put(s_bridge);
|
|
s_bridge = NULL;
|
|
}
|
|
}
|
|
|
|
MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
|
|
MODULE_DESCRIPTION("SiS 5595 Sensor device");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sm_sis5595_init);
|
|
module_exit(sm_sis5595_exit);
|