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1064 lines
30 KiB
1064 lines
30 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* vt8231.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) 2005 Roger Lucas <[email protected]> |
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* Copyright (c) 2002 Mark D. Studebaker <[email protected]> |
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* Aaron M. Marsh <[email protected]> |
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*/ |
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|
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/* |
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* Supports VIA VT8231 South Bridge embedded sensors |
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*/ |
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|
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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|
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/pci.h> |
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#include <linux/jiffies.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/hwmon-vid.h> |
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#include <linux/err.h> |
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#include <linux/mutex.h> |
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#include <linux/acpi.h> |
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#include <linux/io.h> |
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static int force_addr; |
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module_param(force_addr, int, 0); |
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MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); |
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static struct platform_device *pdev; |
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#define VT8231_EXTENT 0x80 |
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#define VT8231_BASE_REG 0x70 |
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#define VT8231_ENABLE_REG 0x74 |
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|
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/* |
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* The VT8231 registers |
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* |
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* The reset value for the input channel configuration is used (Reg 0x4A=0x07) |
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* which sets the selected inputs marked with '*' below if multiple options are |
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* possible: |
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* |
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* Voltage Mode Temperature Mode |
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* Sensor Linux Id Linux Id VIA Id |
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* -------- -------- -------- ------ |
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* CPU Diode N/A temp1 0 |
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* UIC1 in0 temp2 * 1 |
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* UIC2 in1 * temp3 2 |
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* UIC3 in2 * temp4 3 |
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* UIC4 in3 * temp5 4 |
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* UIC5 in4 * temp6 5 |
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* 3.3V in5 N/A |
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* |
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* Note that the BIOS may set the configuration register to a different value |
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* to match the motherboard configuration. |
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*/ |
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/* fans numbered 0-1 */ |
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#define VT8231_REG_FAN_MIN(nr) (0x3b + (nr)) |
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#define VT8231_REG_FAN(nr) (0x29 + (nr)) |
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|
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/* Voltage inputs numbered 0-5 */ |
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static const u8 regvolt[] = { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 }; |
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static const u8 regvoltmax[] = { 0x3d, 0x2b, 0x2d, 0x2f, 0x31, 0x33 }; |
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static const u8 regvoltmin[] = { 0x3e, 0x2c, 0x2e, 0x30, 0x32, 0x34 }; |
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/* |
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* Temperatures are numbered 1-6 according to the Linux kernel specification. |
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* |
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* In the VIA datasheet, however, the temperatures are numbered from zero. |
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* Since it is important that this driver can easily be compared to the VIA |
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* datasheet, we will use the VIA numbering within this driver and map the |
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* kernel sysfs device name to the VIA number in the sysfs callback. |
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*/ |
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#define VT8231_REG_TEMP_LOW01 0x49 |
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#define VT8231_REG_TEMP_LOW25 0x4d |
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static const u8 regtemp[] = { 0x1f, 0x21, 0x22, 0x23, 0x24, 0x25 }; |
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static const u8 regtempmax[] = { 0x39, 0x3d, 0x2b, 0x2d, 0x2f, 0x31 }; |
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static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 }; |
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#define TEMP_FROM_REG(reg) (((253 * 4 - (reg)) * 550 + 105) / 210) |
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#define TEMP_MAXMIN_FROM_REG(reg) (((253 - (reg)) * 2200 + 105) / 210) |
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#define TEMP_MAXMIN_TO_REG(val) (253 - ((val) * 210 + 1100) / 2200) |
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#define VT8231_REG_CONFIG 0x40 |
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#define VT8231_REG_ALARM1 0x41 |
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#define VT8231_REG_ALARM2 0x42 |
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#define VT8231_REG_FANDIV 0x47 |
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#define VT8231_REG_UCH_CONFIG 0x4a |
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#define VT8231_REG_TEMP1_CONFIG 0x4b |
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#define VT8231_REG_TEMP2_CONFIG 0x4c |
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|
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/* |
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* temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux |
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* numbering |
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*/ |
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#define ISTEMP(i, ch_config) ((i) == 0 ? 1 : \ |
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((ch_config) >> ((i)+1)) & 0x01) |
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/* voltages 0-5 */ |
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#define ISVOLT(i, ch_config) ((i) == 5 ? 1 : \ |
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!(((ch_config) >> ((i)+2)) & 0x01)) |
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#define DIV_FROM_REG(val) (1 << (val)) |
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/* |
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* NB The values returned here are NOT temperatures. The calibration curves |
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* for the thermistor curves are board-specific and must go in the |
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* sensors.conf file. Temperature sensors are actually ten bits, but the |
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* VIA datasheet only considers the 8 MSBs obtained from the regtemp[] |
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* register. The temperature value returned should have a magnitude of 3, |
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* so we use the VIA scaling as the "true" scaling and use the remaining 2 |
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* LSBs as fractional precision. |
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* |
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* All the on-chip hardware temperature comparisons for the alarms are only |
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* 8-bits wide, and compare against the 8 MSBs of the temperature. The bits |
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* in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are |
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* ignored. |
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*/ |
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/* |
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****** FAN RPM CONVERSIONS ******** |
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* This chip saturates back at 0, not at 255 like many the other chips. |
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* So, 0 means 0 RPM |
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*/ |
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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 || rpm > 1310720) |
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return 0; |
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return clamp_val(1310720 / (rpm * div), 1, 255); |
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} |
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#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : 1310720 / ((val) * (div))) |
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struct vt8231_data { |
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unsigned short addr; |
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const char *name; |
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struct mutex update_lock; |
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struct device *hwmon_dev; |
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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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u8 in[6]; /* Register value */ |
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u8 in_max[6]; /* Register value */ |
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u8 in_min[6]; /* Register value */ |
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u16 temp[6]; /* Register value 10 bit, right aligned */ |
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u8 temp_max[6]; /* Register value */ |
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u8 temp_min[6]; /* 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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u8 fan_div[2]; /* Register encoding, shifted right */ |
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u16 alarms; /* Register encoding */ |
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u8 uch_config; |
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}; |
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static struct pci_dev *s_bridge; |
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static int vt8231_probe(struct platform_device *pdev); |
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static int vt8231_remove(struct platform_device *pdev); |
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static struct vt8231_data *vt8231_update_device(struct device *dev); |
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static void vt8231_init_device(struct vt8231_data *data); |
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static inline int vt8231_read_value(struct vt8231_data *data, u8 reg) |
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{ |
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return inb_p(data->addr + reg); |
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} |
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static inline void vt8231_write_value(struct vt8231_data *data, u8 reg, |
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u8 value) |
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{ |
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outb_p(value, data->addr + reg); |
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} |
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|
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/* following are the sysfs callback functions */ |
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static ssize_t in_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", ((data->in[nr] - 3) * 10000) / 958); |
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} |
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static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", ((data->in_min[nr] - 3) * 10000) / 958); |
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} |
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static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", (((data->in_max[nr] - 3) * 10000) / 958)); |
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} |
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static ssize_t in_min_store(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 sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = dev_get_drvdata(dev); |
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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] = clamp_val(((val * 958) / 10000) + 3, 0, 255); |
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vt8231_write_value(data, regvoltmin[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 *attr, |
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const char *buf, size_t count) |
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{ |
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = dev_get_drvdata(dev); |
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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] = clamp_val(((val * 958) / 10000) + 3, 0, 255); |
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vt8231_write_value(data, regvoltmax[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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/* Special case for input 5 as this has 3.3V scaling built into the chip */ |
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static ssize_t in5_input_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", |
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(((data->in[5] - 3) * 10000 * 54) / (958 * 34))); |
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} |
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static ssize_t in5_min_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", |
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(((data->in_min[5] - 3) * 10000 * 54) / (958 * 34))); |
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} |
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static ssize_t in5_max_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", |
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(((data->in_max[5] - 3) * 10000 * 54) / (958 * 34))); |
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} |
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static ssize_t in5_min_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 vt8231_data *data = dev_get_drvdata(dev); |
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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[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
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0, 255); |
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vt8231_write_value(data, regvoltmin[5], data->in_min[5]); |
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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 in5_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 vt8231_data *data = dev_get_drvdata(dev); |
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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[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
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0, 255); |
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vt8231_write_value(data, regvoltmax[5], data->in_max[5]); |
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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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static DEVICE_ATTR_RO(in5_input); |
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static DEVICE_ATTR_RW(in5_min); |
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static DEVICE_ATTR_RW(in5_max); |
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/* Temperatures */ |
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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 vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", data->temp[0] * 250); |
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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 vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", data->temp_max[0] * 1000); |
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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 vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", data->temp_min[0] * 1000); |
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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 vt8231_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_max[0] = clamp_val((val + 500) / 1000, 0, 255); |
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vt8231_write_value(data, regtempmax[0], data->temp_max[0]); |
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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_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 vt8231_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_min[0] = clamp_val((val + 500) / 1000, 0, 255); |
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vt8231_write_value(data, regtempmin[0], data->temp_min[0]); |
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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 temp_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); |
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} |
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static ssize_t temp_max_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_max[nr])); |
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} |
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static ssize_t temp_min_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = vt8231_update_device(dev); |
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return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_min[nr])); |
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} |
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static ssize_t temp_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 sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_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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|
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mutex_lock(&data->update_lock); |
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data->temp_max[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
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vt8231_write_value(data, regtempmax[nr], data->temp_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 ssize_t temp_min_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 sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
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int nr = sensor_attr->index; |
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struct vt8231_data *data = dev_get_drvdata(dev); |
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long val; |
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int err; |
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|
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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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|
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mutex_lock(&data->update_lock); |
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data->temp_min[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
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vt8231_write_value(data, regtempmin[nr], data->temp_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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|
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/* |
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* Note that these map the Linux temperature sensor numbering (1-6) to the VIA |
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* temperature sensor numbering (0-5) |
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*/ |
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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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|
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static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); |
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static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); |
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static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_min, 1); |
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static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2); |
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static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2); |
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static SENSOR_DEVICE_ATTR_RW(temp3_max_hyst, temp_min, 2); |
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static SENSOR_DEVICE_ATTR_RO(temp4_input, temp, 3); |
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static SENSOR_DEVICE_ATTR_RW(temp4_max, temp_max, 3); |
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static SENSOR_DEVICE_ATTR_RW(temp4_max_hyst, temp_min, 3); |
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static SENSOR_DEVICE_ATTR_RO(temp5_input, temp, 4); |
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static SENSOR_DEVICE_ATTR_RW(temp5_max, temp_max, 4); |
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static SENSOR_DEVICE_ATTR_RW(temp5_max_hyst, temp_min, 4); |
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static SENSOR_DEVICE_ATTR_RO(temp6_input, temp, 5); |
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static SENSOR_DEVICE_ATTR_RW(temp6_max, temp_max, 5); |
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static SENSOR_DEVICE_ATTR_RW(temp6_max_hyst, temp_min, 5); |
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|
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/* Fans */ |
|
static ssize_t fan_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
|
int nr = sensor_attr->index; |
|
struct vt8231_data *data = vt8231_update_device(dev); |
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
|
DIV_FROM_REG(data->fan_div[nr]))); |
|
} |
|
|
|
static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
|
int nr = sensor_attr->index; |
|
struct vt8231_data *data = vt8231_update_device(dev); |
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], |
|
DIV_FROM_REG(data->fan_div[nr]))); |
|
} |
|
|
|
static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
|
int nr = sensor_attr->index; |
|
struct vt8231_data *data = vt8231_update_device(dev); |
|
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); |
|
} |
|
|
|
static ssize_t fan_min_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
|
int nr = sensor_attr->index; |
|
struct vt8231_data *data = dev_get_drvdata(dev); |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
|
vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static ssize_t fan_div_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct vt8231_data *data = dev_get_drvdata(dev); |
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
|
unsigned long val; |
|
int nr = sensor_attr->index; |
|
int old = vt8231_read_value(data, VT8231_REG_FANDIV); |
|
long min = FAN_FROM_REG(data->fan_min[nr], |
|
DIV_FROM_REG(data->fan_div[nr])); |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
switch (val) { |
|
case 1: |
|
data->fan_div[nr] = 0; |
|
break; |
|
case 2: |
|
data->fan_div[nr] = 1; |
|
break; |
|
case 4: |
|
data->fan_div[nr] = 2; |
|
break; |
|
case 8: |
|
data->fan_div[nr] = 3; |
|
break; |
|
default: |
|
dev_err(dev, |
|
"fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", |
|
val); |
|
mutex_unlock(&data->update_lock); |
|
return -EINVAL; |
|
} |
|
|
|
/* Correct the fan minimum speed */ |
|
data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
|
vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
|
|
|
old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); |
|
vt8231_write_value(data, VT8231_REG_FANDIV, old); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
|
static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); |
|
static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); |
|
static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
|
static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); |
|
|
|
/* Alarms */ |
|
static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct vt8231_data *data = vt8231_update_device(dev); |
|
return sprintf(buf, "%d\n", data->alarms); |
|
} |
|
static DEVICE_ATTR_RO(alarms); |
|
|
|
static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int bitnr = to_sensor_dev_attr(attr)->index; |
|
struct vt8231_data *data = vt8231_update_device(dev); |
|
return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
|
} |
|
static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 11); |
|
static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 0); |
|
static SENSOR_DEVICE_ATTR_RO(temp4_alarm, alarm, 1); |
|
static SENSOR_DEVICE_ATTR_RO(temp5_alarm, alarm, 3); |
|
static SENSOR_DEVICE_ATTR_RO(temp6_alarm, alarm, 8); |
|
static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 11); |
|
static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 0); |
|
static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 1); |
|
static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); |
|
static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8); |
|
static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 2); |
|
static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); |
|
|
|
static ssize_t name_show(struct device *dev, struct device_attribute |
|
*devattr, char *buf) |
|
{ |
|
struct vt8231_data *data = dev_get_drvdata(dev); |
|
return sprintf(buf, "%s\n", data->name); |
|
} |
|
static DEVICE_ATTR_RO(name); |
|
|
|
static struct attribute *vt8231_attributes_temps[6][5] = { |
|
{ |
|
&dev_attr_temp1_input.attr, |
|
&dev_attr_temp1_max_hyst.attr, |
|
&dev_attr_temp1_max.attr, |
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr, |
|
NULL |
|
}, { |
|
&sensor_dev_attr_temp2_input.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max_hyst.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max.dev_attr.attr, |
|
&sensor_dev_attr_temp2_alarm.dev_attr.attr, |
|
NULL |
|
}, { |
|
&sensor_dev_attr_temp3_input.dev_attr.attr, |
|
&sensor_dev_attr_temp3_max_hyst.dev_attr.attr, |
|
&sensor_dev_attr_temp3_max.dev_attr.attr, |
|
&sensor_dev_attr_temp3_alarm.dev_attr.attr, |
|
NULL |
|
}, { |
|
&sensor_dev_attr_temp4_input.dev_attr.attr, |
|
&sensor_dev_attr_temp4_max_hyst.dev_attr.attr, |
|
&sensor_dev_attr_temp4_max.dev_attr.attr, |
|
&sensor_dev_attr_temp4_alarm.dev_attr.attr, |
|
NULL |
|
}, { |
|
&sensor_dev_attr_temp5_input.dev_attr.attr, |
|
&sensor_dev_attr_temp5_max_hyst.dev_attr.attr, |
|
&sensor_dev_attr_temp5_max.dev_attr.attr, |
|
&sensor_dev_attr_temp5_alarm.dev_attr.attr, |
|
NULL |
|
}, { |
|
&sensor_dev_attr_temp6_input.dev_attr.attr, |
|
&sensor_dev_attr_temp6_max_hyst.dev_attr.attr, |
|
&sensor_dev_attr_temp6_max.dev_attr.attr, |
|
&sensor_dev_attr_temp6_alarm.dev_attr.attr, |
|
NULL |
|
} |
|
}; |
|
|
|
static const struct attribute_group vt8231_group_temps[6] = { |
|
{ .attrs = vt8231_attributes_temps[0] }, |
|
{ .attrs = vt8231_attributes_temps[1] }, |
|
{ .attrs = vt8231_attributes_temps[2] }, |
|
{ .attrs = vt8231_attributes_temps[3] }, |
|
{ .attrs = vt8231_attributes_temps[4] }, |
|
{ .attrs = vt8231_attributes_temps[5] }, |
|
}; |
|
|
|
static struct attribute *vt8231_attributes_volts[6][5] = { |
|
{ |
|
&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, |
|
NULL |
|
}, { |
|
&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, |
|
NULL |
|
}, { |
|
&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, |
|
NULL |
|
}, { |
|
&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, |
|
NULL |
|
}, { |
|
&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 |
|
}, { |
|
&dev_attr_in5_input.attr, |
|
&dev_attr_in5_min.attr, |
|
&dev_attr_in5_max.attr, |
|
&sensor_dev_attr_in5_alarm.dev_attr.attr, |
|
NULL |
|
} |
|
}; |
|
|
|
static const struct attribute_group vt8231_group_volts[6] = { |
|
{ .attrs = vt8231_attributes_volts[0] }, |
|
{ .attrs = vt8231_attributes_volts[1] }, |
|
{ .attrs = vt8231_attributes_volts[2] }, |
|
{ .attrs = vt8231_attributes_volts[3] }, |
|
{ .attrs = vt8231_attributes_volts[4] }, |
|
{ .attrs = vt8231_attributes_volts[5] }, |
|
}; |
|
|
|
static struct attribute *vt8231_attributes[] = { |
|
&sensor_dev_attr_fan1_input.dev_attr.attr, |
|
&sensor_dev_attr_fan2_input.dev_attr.attr, |
|
&sensor_dev_attr_fan1_min.dev_attr.attr, |
|
&sensor_dev_attr_fan2_min.dev_attr.attr, |
|
&sensor_dev_attr_fan1_div.dev_attr.attr, |
|
&sensor_dev_attr_fan2_div.dev_attr.attr, |
|
&sensor_dev_attr_fan1_alarm.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 vt8231_group = { |
|
.attrs = vt8231_attributes, |
|
}; |
|
|
|
static struct platform_driver vt8231_driver = { |
|
.driver = { |
|
.name = "vt8231", |
|
}, |
|
.probe = vt8231_probe, |
|
.remove = vt8231_remove, |
|
}; |
|
|
|
static const struct pci_device_id vt8231_pci_ids[] = { |
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) }, |
|
{ 0, } |
|
}; |
|
|
|
MODULE_DEVICE_TABLE(pci, vt8231_pci_ids); |
|
|
|
static int vt8231_pci_probe(struct pci_dev *dev, |
|
const struct pci_device_id *id); |
|
|
|
static struct pci_driver vt8231_pci_driver = { |
|
.name = "vt8231", |
|
.id_table = vt8231_pci_ids, |
|
.probe = vt8231_pci_probe, |
|
}; |
|
|
|
static int vt8231_probe(struct platform_device *pdev) |
|
{ |
|
struct resource *res; |
|
struct vt8231_data *data; |
|
int err = 0, i; |
|
|
|
/* Reserve the ISA region */ |
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
|
if (!devm_request_region(&pdev->dev, res->start, VT8231_EXTENT, |
|
vt8231_driver.driver.name)) { |
|
dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n", |
|
(unsigned long)res->start, (unsigned long)res->end); |
|
return -ENODEV; |
|
} |
|
|
|
data = devm_kzalloc(&pdev->dev, sizeof(struct vt8231_data), GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
platform_set_drvdata(pdev, data); |
|
data->addr = res->start; |
|
data->name = "vt8231"; |
|
|
|
mutex_init(&data->update_lock); |
|
vt8231_init_device(data); |
|
|
|
/* Register sysfs hooks */ |
|
err = sysfs_create_group(&pdev->dev.kobj, &vt8231_group); |
|
if (err) |
|
return err; |
|
|
|
/* Must update device information to find out the config field */ |
|
data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG); |
|
|
|
for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) { |
|
if (ISTEMP(i, data->uch_config)) { |
|
err = sysfs_create_group(&pdev->dev.kobj, |
|
&vt8231_group_temps[i]); |
|
if (err) |
|
goto exit_remove_files; |
|
} |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) { |
|
if (ISVOLT(i, data->uch_config)) { |
|
err = sysfs_create_group(&pdev->dev.kobj, |
|
&vt8231_group_volts[i]); |
|
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: |
|
for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
|
sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
|
|
|
for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) |
|
sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
|
|
|
sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); |
|
return err; |
|
} |
|
|
|
static int vt8231_remove(struct platform_device *pdev) |
|
{ |
|
struct vt8231_data *data = platform_get_drvdata(pdev); |
|
int i; |
|
|
|
hwmon_device_unregister(data->hwmon_dev); |
|
|
|
for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
|
sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
|
|
|
for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) |
|
sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
|
|
|
sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); |
|
|
|
return 0; |
|
} |
|
|
|
static void vt8231_init_device(struct vt8231_data *data) |
|
{ |
|
vt8231_write_value(data, VT8231_REG_TEMP1_CONFIG, 0); |
|
vt8231_write_value(data, VT8231_REG_TEMP2_CONFIG, 0); |
|
} |
|
|
|
static struct vt8231_data *vt8231_update_device(struct device *dev) |
|
{ |
|
struct vt8231_data *data = dev_get_drvdata(dev); |
|
int i; |
|
u16 low; |
|
|
|
mutex_lock(&data->update_lock); |
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
|
|| !data->valid) { |
|
for (i = 0; i < 6; i++) { |
|
if (ISVOLT(i, data->uch_config)) { |
|
data->in[i] = vt8231_read_value(data, |
|
regvolt[i]); |
|
data->in_min[i] = vt8231_read_value(data, |
|
regvoltmin[i]); |
|
data->in_max[i] = vt8231_read_value(data, |
|
regvoltmax[i]); |
|
} |
|
} |
|
for (i = 0; i < 2; i++) { |
|
data->fan[i] = vt8231_read_value(data, |
|
VT8231_REG_FAN(i)); |
|
data->fan_min[i] = vt8231_read_value(data, |
|
VT8231_REG_FAN_MIN(i)); |
|
} |
|
|
|
low = vt8231_read_value(data, VT8231_REG_TEMP_LOW01); |
|
low = (low >> 6) | ((low & 0x30) >> 2) |
|
| (vt8231_read_value(data, VT8231_REG_TEMP_LOW25) << 4); |
|
for (i = 0; i < 6; i++) { |
|
if (ISTEMP(i, data->uch_config)) { |
|
data->temp[i] = (vt8231_read_value(data, |
|
regtemp[i]) << 2) |
|
| ((low >> (2 * i)) & 0x03); |
|
data->temp_max[i] = vt8231_read_value(data, |
|
regtempmax[i]); |
|
data->temp_min[i] = vt8231_read_value(data, |
|
regtempmin[i]); |
|
} |
|
} |
|
|
|
i = vt8231_read_value(data, VT8231_REG_FANDIV); |
|
data->fan_div[0] = (i >> 4) & 0x03; |
|
data->fan_div[1] = i >> 6; |
|
data->alarms = vt8231_read_value(data, VT8231_REG_ALARM1) | |
|
(vt8231_read_value(data, VT8231_REG_ALARM2) << 8); |
|
|
|
/* Set alarm flags correctly */ |
|
if (!data->fan[0] && data->fan_min[0]) |
|
data->alarms |= 0x40; |
|
else if (data->fan[0] && !data->fan_min[0]) |
|
data->alarms &= ~0x40; |
|
|
|
if (!data->fan[1] && data->fan_min[1]) |
|
data->alarms |= 0x80; |
|
else if (data->fan[1] && !data->fan_min[1]) |
|
data->alarms &= ~0x80; |
|
|
|
data->last_updated = jiffies; |
|
data->valid = 1; |
|
} |
|
|
|
mutex_unlock(&data->update_lock); |
|
|
|
return data; |
|
} |
|
|
|
static int vt8231_device_add(unsigned short address) |
|
{ |
|
struct resource res = { |
|
.start = address, |
|
.end = address + VT8231_EXTENT - 1, |
|
.name = "vt8231", |
|
.flags = IORESOURCE_IO, |
|
}; |
|
int err; |
|
|
|
err = acpi_check_resource_conflict(&res); |
|
if (err) |
|
goto exit; |
|
|
|
pdev = platform_device_alloc("vt8231", 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 vt8231_pci_probe(struct pci_dev *dev, |
|
const struct pci_device_id *id) |
|
{ |
|
u16 address, val; |
|
if (force_addr) { |
|
address = force_addr & 0xff00; |
|
dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", |
|
address); |
|
|
|
if (PCIBIOS_SUCCESSFUL != |
|
pci_write_config_word(dev, VT8231_BASE_REG, address | 1)) |
|
return -ENODEV; |
|
} |
|
|
|
pci_read_config_word(dev, VT8231_BASE_REG, &val); |
|
if (val == (u16)~0) |
|
return -ENODEV; |
|
|
|
address = val & ~(VT8231_EXTENT - 1); |
|
if (address == 0) { |
|
dev_err(&dev->dev, "base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
|
return -ENODEV; |
|
} |
|
|
|
pci_read_config_word(dev, VT8231_ENABLE_REG, &val); |
|
if (val == (u16)~0) |
|
return -ENODEV; |
|
|
|
if (!(val & 0x0001)) { |
|
dev_warn(&dev->dev, "enabling sensors\n"); |
|
if (PCIBIOS_SUCCESSFUL != |
|
pci_write_config_word(dev, VT8231_ENABLE_REG, |
|
val | 0x0001)) |
|
return -ENODEV; |
|
} |
|
|
|
if (platform_driver_register(&vt8231_driver)) |
|
goto exit; |
|
|
|
/* Sets global pdev as a side effect */ |
|
if (vt8231_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. |
|
*/ |
|
|
|
/* |
|
* We do, however, mark ourselves as using the PCI device to stop it |
|
* getting unloaded. |
|
*/ |
|
s_bridge = pci_dev_get(dev); |
|
return -ENODEV; |
|
|
|
exit_unregister: |
|
platform_driver_unregister(&vt8231_driver); |
|
exit: |
|
return -ENODEV; |
|
} |
|
|
|
static int __init sm_vt8231_init(void) |
|
{ |
|
return pci_register_driver(&vt8231_pci_driver); |
|
} |
|
|
|
static void __exit sm_vt8231_exit(void) |
|
{ |
|
pci_unregister_driver(&vt8231_pci_driver); |
|
if (s_bridge != NULL) { |
|
platform_device_unregister(pdev); |
|
platform_driver_unregister(&vt8231_driver); |
|
pci_dev_put(s_bridge); |
|
s_bridge = NULL; |
|
} |
|
} |
|
|
|
MODULE_AUTHOR("Roger Lucas <[email protected]>"); |
|
MODULE_DESCRIPTION("VT8231 sensors"); |
|
MODULE_LICENSE("GPL"); |
|
|
|
module_init(sm_vt8231_init); |
|
module_exit(sm_vt8231_exit);
|
|
|