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915 lines
25 KiB
915 lines
25 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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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 <[email protected]>, |
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* Kyösti Mälkki <[email protected]>, and |
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* Mark D. Studebaker <[email protected]> |
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* Ported to Linux 2.6 by Aurelien Jarno <[email protected]> with |
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* the help of Jean Delvare <[email protected]> |
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*/ |
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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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|
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/* Many SIS5595 constants specified below */ |
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|
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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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|
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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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|
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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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/* |
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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 in_show(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 in_min_show(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 in_max_show(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 in_min_store(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 in_max_store(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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static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0); |
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static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); |
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static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); |
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static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1); |
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static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); |
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static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); |
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static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2); |
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static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); |
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static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); |
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static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3); |
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static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); |
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static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); |
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static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4); |
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static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); |
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static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); |
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/* Temperature */ |
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static ssize_t temp1_input_show(struct device *dev, |
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struct device_attribute *attr, 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 temp1_max_show(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 temp1_max_store(struct device *dev, |
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struct device_attribute *attr, const char *buf, |
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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 temp1_max_hyst_show(struct device *dev, |
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struct device_attribute *attr, 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 temp1_max_hyst_store(struct device *dev, |
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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_RO(temp1_input); |
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static DEVICE_ATTR_RW(temp1_max); |
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static DEVICE_ATTR_RW(temp1_max_hyst); |
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/* 2 Fans */ |
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static ssize_t fan_show(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 fan_min_show(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 fan_min_store(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 fan_div_show(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 fan_div_store(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); |
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break; |
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} |
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sis5595_write_value(data, SIS5595_REG_FANDIV, reg); |
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data->fan_min[nr] = |
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FAN_TO_REG(min, 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 SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
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static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); |
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static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); |
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static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); |
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static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
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static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); |
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|
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/* Alarms */ |
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static ssize_t alarms_show(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", data->alarms); |
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} |
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static DEVICE_ATTR_RO(alarms); |
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static ssize_t alarm_show(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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int nr = to_sensor_dev_attr(da)->index; |
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return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); |
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} |
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static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
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static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); |
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static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); |
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static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); |
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static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 15); |
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static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); |
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static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); |
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static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 15); |
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|
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static ssize_t name_show(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 = dev_get_drvdata(dev); |
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return sprintf(buf, "%s\n", data->name); |
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} |
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static DEVICE_ATTR_RO(name); |
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|
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static struct attribute *sis5595_attributes[] = { |
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&sensor_dev_attr_in0_input.dev_attr.attr, |
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&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 <[email protected]>"); |
|
MODULE_DESCRIPTION("SiS 5595 Sensor device"); |
|
MODULE_LICENSE("GPL"); |
|
|
|
module_init(sm_sis5595_init); |
|
module_exit(sm_sis5595_exit);
|
|
|