--- /dev/null
+/*
+ * w83781d.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ * Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
+ * Philip Edelbrock <phil@netroedge.com>,
+ * and Mark Studebaker <mdsxyz123@yahoo.com>
+ * Copyright (c) 2007 - 2008 Jean Delvare <jdelvare@suse.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Supports following chips:
+ *
+ * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
+ * as99127f 7 3 0 3 0x31 0x12c3 yes no
+ * as99127f rev.2 (type_name = as99127f) 0x31 0x5ca3 yes no
+ * w83781d 7 3 0 3 0x10-1 0x5ca3 yes yes
+ * w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes
+ * w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-vid.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+
+#ifdef CONFIG_ISA
+#include <linux/platform_device.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#endif
+
+#include "lm75.h"
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
+ 0x2e, 0x2f, I2C_CLIENT_END };
+
+enum chips { w83781d, w83782d, w83783s, as99127f };
+
+/* Insmod parameters */
+static unsigned short force_subclients[4];
+module_param_array(force_subclients, short, NULL, 0);
+MODULE_PARM_DESC(force_subclients,
+ "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
+
+static bool reset;
+module_param(reset, bool, 0);
+MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
+
+static bool init = 1;
+module_param(init, bool, 0);
+MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
+
+/* Constants specified below */
+
+/* Length of ISA address segment */
+#define W83781D_EXTENT 8
+
+/* Where are the ISA address/data registers relative to the base address */
+#define W83781D_ADDR_REG_OFFSET 5
+#define W83781D_DATA_REG_OFFSET 6
+
+/* The device registers */
+/* in nr from 0 to 8 */
+#define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
+ (0x554 + (((nr) - 7) * 2)))
+#define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
+ (0x555 + (((nr) - 7) * 2)))
+#define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
+ (0x550 + (nr) - 7))
+
+/* fan nr from 0 to 2 */
+#define W83781D_REG_FAN_MIN(nr) (0x3b + (nr))
+#define W83781D_REG_FAN(nr) (0x28 + (nr))
+
+#define W83781D_REG_BANK 0x4E
+#define W83781D_REG_TEMP2_CONFIG 0x152
+#define W83781D_REG_TEMP3_CONFIG 0x252
+/* temp nr from 1 to 3 */
+#define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \
+ ((nr == 2) ? (0x0150) : \
+ (0x27)))
+#define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \
+ ((nr == 2) ? (0x153) : \
+ (0x3A)))
+#define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \
+ ((nr == 2) ? (0x155) : \
+ (0x39)))
+
+#define W83781D_REG_CONFIG 0x40
+
+/* Interrupt status (W83781D, AS99127F) */
+#define W83781D_REG_ALARM1 0x41
+#define W83781D_REG_ALARM2 0x42
+
+/* Real-time status (W83782D, W83783S) */
+#define W83782D_REG_ALARM1 0x459
+#define W83782D_REG_ALARM2 0x45A
+#define W83782D_REG_ALARM3 0x45B
+
+#define W83781D_REG_BEEP_CONFIG 0x4D
+#define W83781D_REG_BEEP_INTS1 0x56
+#define W83781D_REG_BEEP_INTS2 0x57
+#define W83781D_REG_BEEP_INTS3 0x453 /* not on W83781D */
+
+#define W83781D_REG_VID_FANDIV 0x47
+
+#define W83781D_REG_CHIPID 0x49
+#define W83781D_REG_WCHIPID 0x58
+#define W83781D_REG_CHIPMAN 0x4F
+#define W83781D_REG_PIN 0x4B
+
+/* 782D/783S only */
+#define W83781D_REG_VBAT 0x5D
+
+/* PWM 782D (1-4) and 783S (1-2) only */
+static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F };
+#define W83781D_REG_PWMCLK12 0x5C
+#define W83781D_REG_PWMCLK34 0x45C
+
+#define W83781D_REG_I2C_ADDR 0x48
+#define W83781D_REG_I2C_SUBADDR 0x4A
+
+/*
+ * The following are undocumented in the data sheets however we
+ * received the information in an email from Winbond tech support
+ */
+/* Sensor selection - not on 781d */
+#define W83781D_REG_SCFG1 0x5D
+static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
+
+#define W83781D_REG_SCFG2 0x59
+static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
+
+#define W83781D_DEFAULT_BETA 3435
+
+/* Conversions */
+#define IN_TO_REG(val) clamp_val(((val) + 8) / 16, 0, 255)
+#define IN_FROM_REG(val) ((val) * 16)
+
+static inline u8
+FAN_TO_REG(long rpm, int div)
+{
+ if (rpm == 0)
+ return 255;
+ rpm = clamp_val(rpm, 1, 1000000);
+ return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
+}
+
+static inline long
+FAN_FROM_REG(u8 val, int div)
+{
+ if (val == 0)
+ return -1;
+ if (val == 255)
+ return 0;
+ return 1350000 / (val * div);
+}
+
+#define TEMP_TO_REG(val) clamp_val((val) / 1000, -127, 128)
+#define TEMP_FROM_REG(val) ((val) * 1000)
+
+#define BEEP_MASK_FROM_REG(val, type) ((type) == as99127f ? \
+ (~(val)) & 0x7fff : (val) & 0xff7fff)
+#define BEEP_MASK_TO_REG(val, type) ((type) == as99127f ? \
+ (~(val)) & 0x7fff : (val) & 0xff7fff)
+
+#define DIV_FROM_REG(val) (1 << (val))
+
+static inline u8
+DIV_TO_REG(long val, enum chips type)
+{
+ int i;
+ val = clamp_val(val, 1,
+ ((type == w83781d || type == as99127f) ? 8 : 128)) >> 1;
+ for (i = 0; i < 7; i++) {
+ if (val == 0)
+ break;
+ val >>= 1;
+ }
+ return i;
+}
+
+struct w83781d_data {
+ struct i2c_client *client;
+ struct device *hwmon_dev;
+ struct mutex lock;
+ enum chips type;
+
+ /* For ISA device only */
+ const char *name;
+ int isa_addr;
+
+ struct mutex update_lock;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+
+ struct i2c_client *lm75[2]; /* for secondary I2C addresses */
+ /* array of 2 pointers to subclients */
+
+ u8 in[9]; /* Register value - 8 & 9 for 782D only */
+ u8 in_max[9]; /* Register value - 8 & 9 for 782D only */
+ u8 in_min[9]; /* Register value - 8 & 9 for 782D only */
+ u8 fan[3]; /* Register value */
+ u8 fan_min[3]; /* Register value */
+ s8 temp; /* Register value */
+ s8 temp_max; /* Register value */
+ s8 temp_max_hyst; /* Register value */
+ u16 temp_add[2]; /* Register value */
+ u16 temp_max_add[2]; /* Register value */
+ u16 temp_max_hyst_add[2]; /* Register value */
+ u8 fan_div[3]; /* Register encoding, shifted right */
+ u8 vid; /* Register encoding, combined */
+ u32 alarms; /* Register encoding, combined */
+ u32 beep_mask; /* Register encoding, combined */
+ u8 pwm[4]; /* Register value */
+ u8 pwm2_enable; /* Boolean */
+ u16 sens[3]; /*
+ * 782D/783S only.
+ * 1 = pentium diode; 2 = 3904 diode;
+ * 4 = thermistor
+ */
+ u8 vrm;
+};
+
+static struct w83781d_data *w83781d_data_if_isa(void);
+static int w83781d_alias_detect(struct i2c_client *client, u8 chipid);
+
+static int w83781d_read_value(struct w83781d_data *data, u16 reg);
+static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value);
+static struct w83781d_data *w83781d_update_device(struct device *dev);
+static void w83781d_init_device(struct device *dev);
+
+/* following are the sysfs callback functions */
+#define show_in_reg(reg) \
+static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
+ char *buf) \
+{ \
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
+ struct w83781d_data *data = w83781d_update_device(dev); \
+ return sprintf(buf, "%ld\n", \
+ (long)IN_FROM_REG(data->reg[attr->index])); \
+}
+show_in_reg(in);
+show_in_reg(in_min);
+show_in_reg(in_max);
+
+#define store_in_reg(REG, reg) \
+static ssize_t store_in_##reg(struct device *dev, struct device_attribute \
+ *da, const char *buf, size_t count) \
+{ \
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
+ struct w83781d_data *data = dev_get_drvdata(dev); \
+ int nr = attr->index; \
+ unsigned long val; \
+ int err = kstrtoul(buf, 10, &val); \
+ if (err) \
+ return err; \
+ mutex_lock(&data->update_lock); \
+ data->in_##reg[nr] = IN_TO_REG(val); \
+ w83781d_write_value(data, W83781D_REG_IN_##REG(nr), \
+ data->in_##reg[nr]); \
+ \
+ mutex_unlock(&data->update_lock); \
+ return count; \
+}
+store_in_reg(MIN, min);
+store_in_reg(MAX, max);
+
+#define sysfs_in_offsets(offset) \
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
+ show_in, NULL, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
+ show_in_min, store_in_min, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
+ show_in_max, store_in_max, offset)
+
+sysfs_in_offsets(0);
+sysfs_in_offsets(1);
+sysfs_in_offsets(2);
+sysfs_in_offsets(3);
+sysfs_in_offsets(4);
+sysfs_in_offsets(5);
+sysfs_in_offsets(6);
+sysfs_in_offsets(7);
+sysfs_in_offsets(8);
+
+#define show_fan_reg(reg) \
+static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
+ char *buf) \
+{ \
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
+ struct w83781d_data *data = w83781d_update_device(dev); \
+ return sprintf(buf, "%ld\n", \
+ FAN_FROM_REG(data->reg[attr->index], \
+ DIV_FROM_REG(data->fan_div[attr->index]))); \
+}
+show_fan_reg(fan);
+show_fan_reg(fan_min);
+
+static ssize_t
+store_fan_min(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ int nr = attr->index;
+ 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]));
+ w83781d_write_value(data, W83781D_REG_FAN_MIN(nr),
+ data->fan_min[nr]);
+
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
+ show_fan_min, store_fan_min, 0);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
+ show_fan_min, store_fan_min, 1);
+static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
+static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR,
+ show_fan_min, store_fan_min, 2);
+
+#define show_temp_reg(reg) \
+static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
+ char *buf) \
+{ \
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
+ struct w83781d_data *data = w83781d_update_device(dev); \
+ int nr = attr->index; \
+ if (nr >= 2) { /* TEMP2 and TEMP3 */ \
+ return sprintf(buf, "%d\n", \
+ LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
+ } else { /* TEMP1 */ \
+ return sprintf(buf, "%ld\n", (long)TEMP_FROM_REG(data->reg)); \
+ } \
+}
+show_temp_reg(temp);
+show_temp_reg(temp_max);
+show_temp_reg(temp_max_hyst);
+
+#define store_temp_reg(REG, reg) \
+static ssize_t store_temp_##reg(struct device *dev, \
+ struct device_attribute *da, const char *buf, size_t count) \
+{ \
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
+ struct w83781d_data *data = dev_get_drvdata(dev); \
+ int nr = attr->index; \
+ long val; \
+ int err = kstrtol(buf, 10, &val); \
+ if (err) \
+ return err; \
+ mutex_lock(&data->update_lock); \
+ \
+ if (nr >= 2) { /* TEMP2 and TEMP3 */ \
+ data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
+ w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
+ data->temp_##reg##_add[nr-2]); \
+ } else { /* TEMP1 */ \
+ data->temp_##reg = TEMP_TO_REG(val); \
+ w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
+ data->temp_##reg); \
+ } \
+ \
+ mutex_unlock(&data->update_lock); \
+ return count; \
+}
+store_temp_reg(OVER, max);
+store_temp_reg(HYST, max_hyst);
+
+#define sysfs_temp_offsets(offset) \
+static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
+ show_temp, NULL, offset); \
+static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
+ show_temp_max, store_temp_max, offset); \
+static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
+ show_temp_max_hyst, store_temp_max_hyst, offset);
+
+sysfs_temp_offsets(1);
+sysfs_temp_offsets(2);
+sysfs_temp_offsets(3);
+
+static ssize_t
+show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
+}
+
+static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
+
+static ssize_t
+show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ return sprintf(buf, "%ld\n", (long) data->vrm);
+}
+
+static ssize_t
+store_vrm_reg(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+ data->vrm = clamp_val(val, 0, 255);
+
+ return count;
+}
+
+static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
+
+static ssize_t
+show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ return sprintf(buf, "%u\n", data->alarms);
+}
+
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
+
+static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ int bitnr = to_sensor_dev_attr(attr)->index;
+ return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
+}
+
+/* The W83781D has a single alarm bit for temp2 and temp3 */
+static ssize_t show_temp3_alarm(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ int bitnr = (data->type == w83781d) ? 5 : 13;
+ return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
+}
+
+static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
+static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
+static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10);
+static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16);
+static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17);
+static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
+static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
+static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11);
+static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0);
+
+static ssize_t show_beep_mask(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ return sprintf(buf, "%ld\n",
+ (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
+}
+
+static ssize_t
+store_beep_mask(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct w83781d_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->beep_mask &= 0x8000; /* preserve beep enable */
+ data->beep_mask |= BEEP_MASK_TO_REG(val, data->type);
+ w83781d_write_value(data, W83781D_REG_BEEP_INTS1,
+ data->beep_mask & 0xff);
+ w83781d_write_value(data, W83781D_REG_BEEP_INTS2,
+ (data->beep_mask >> 8) & 0xff);
+ if (data->type != w83781d && data->type != as99127f) {
+ w83781d_write_value(data, W83781D_REG_BEEP_INTS3,
+ ((data->beep_mask) >> 16) & 0xff);
+ }
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
+ show_beep_mask, store_beep_mask);
+
+static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ int bitnr = to_sensor_dev_attr(attr)->index;
+ return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
+}
+
+static ssize_t
+store_beep(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ int bitnr = to_sensor_dev_attr(attr)->index;
+ u8 reg;
+ unsigned long bit;
+ int err;
+
+ err = kstrtoul(buf, 10, &bit);
+ if (err)
+ return err;
+
+ if (bit & ~1)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ if (bit)
+ data->beep_mask |= (1 << bitnr);
+ else
+ data->beep_mask &= ~(1 << bitnr);
+
+ if (bitnr < 8) {
+ reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
+ if (bit)
+ reg |= (1 << bitnr);
+ else
+ reg &= ~(1 << bitnr);
+ w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg);
+ } else if (bitnr < 16) {
+ reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
+ if (bit)
+ reg |= (1 << (bitnr - 8));
+ else
+ reg &= ~(1 << (bitnr - 8));
+ w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg);
+ } else {
+ reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3);
+ if (bit)
+ reg |= (1 << (bitnr - 16));
+ else
+ reg &= ~(1 << (bitnr - 16));
+ w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg);
+ }
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+/* The W83781D has a single beep bit for temp2 and temp3 */
+static ssize_t show_temp3_beep(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ int bitnr = (data->type == w83781d) ? 5 : 13;
+ return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
+}
+
+static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 0);
+static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 1);
+static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 2);
+static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 3);
+static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 8);
+static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 9);
+static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 10);
+static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 16);
+static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 17);
+static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 6);
+static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 7);
+static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 11);
+static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 4);
+static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 5);
+static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO,
+ show_temp3_beep, store_beep, 13);
+static SENSOR_DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
+ show_beep, store_beep, 15);
+
+static ssize_t
+show_fan_div(struct device *dev, struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct w83781d_data *data = w83781d_update_device(dev);
+ return sprintf(buf, "%ld\n",
+ (long) DIV_FROM_REG(data->fan_div[attr->index]));
+}
+
+/*
+ * Note: we save and restore the fan minimum here, because its value is
+ * determined in part by the fan divisor. This follows the principle of
+ * least surprise; the user doesn't expect the fan minimum to change just
+ * because the divisor changed.
+ */
+static ssize_t
+store_fan_div(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ unsigned long min;
+ int nr = attr->index;
+ u8 reg;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+
+ /* Save fan_min */
+ min = FAN_FROM_REG(data->fan_min[nr],
+ DIV_FROM_REG(data->fan_div[nr]));
+
+ data->fan_div[nr] = DIV_TO_REG(val, data->type);
+
+ reg = (w83781d_read_value(data, nr == 2 ?
+ W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
+ & (nr == 0 ? 0xcf : 0x3f))
+ | ((data->fan_div[nr] & 0x03) << (nr == 0 ? 4 : 6));
+ w83781d_write_value(data, nr == 2 ?
+ W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
+
+ /* w83781d and as99127f don't have extended divisor bits */
+ if (data->type != w83781d && data->type != as99127f) {
+ reg = (w83781d_read_value(data, W83781D_REG_VBAT)
+ & ~(1 << (5 + nr)))
+ | ((data->fan_div[nr] & 0x04) << (3 + nr));
+ w83781d_write_value(data, W83781D_REG_VBAT, reg);
+ }
+
+ /* Restore fan_min */
+ data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
+ w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]);
+
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
+ show_fan_div, store_fan_div, 0);
+static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
+ show_fan_div, store_fan_div, 1);
+static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR,
+ show_fan_div, store_fan_div, 2);
+
+static ssize_t
+show_pwm(struct device *dev, struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct w83781d_data *data = w83781d_update_device(dev);
+ return sprintf(buf, "%d\n", (int)data->pwm[attr->index]);
+}
+
+static ssize_t
+show_pwm2_enable(struct device *dev, struct device_attribute *da, char *buf)
+{
+ struct w83781d_data *data = w83781d_update_device(dev);
+ return sprintf(buf, "%d\n", (int)data->pwm2_enable);
+}
+
+static ssize_t
+store_pwm(struct device *dev, struct device_attribute *da, const char *buf,
+ size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ int nr = attr->index;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->pwm[nr] = clamp_val(val, 0, 255);
+ w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t
+store_pwm2_enable(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ unsigned long val;
+ u32 reg;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+
+ switch (val) {
+ case 0:
+ case 1:
+ reg = w83781d_read_value(data, W83781D_REG_PWMCLK12);
+ w83781d_write_value(data, W83781D_REG_PWMCLK12,
+ (reg & 0xf7) | (val << 3));
+
+ reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
+ w83781d_write_value(data, W83781D_REG_BEEP_CONFIG,
+ (reg & 0xef) | (!val << 4));
+
+ data->pwm2_enable = val;
+ break;
+
+ default:
+ mutex_unlock(&data->update_lock);
+ return -EINVAL;
+ }
+
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0);
+static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1);
+static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2);
+static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3);
+/* only PWM2 can be enabled/disabled */
+static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
+ show_pwm2_enable, store_pwm2_enable);
+
+static ssize_t
+show_sensor(struct device *dev, struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct w83781d_data *data = w83781d_update_device(dev);
+ return sprintf(buf, "%d\n", (int)data->sens[attr->index]);
+}
+
+static ssize_t
+store_sensor(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ int nr = attr->index;
+ unsigned long val;
+ u32 tmp;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+
+ switch (val) {
+ case 1: /* PII/Celeron diode */
+ tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
+ w83781d_write_value(data, W83781D_REG_SCFG1,
+ tmp | BIT_SCFG1[nr]);
+ tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
+ w83781d_write_value(data, W83781D_REG_SCFG2,
+ tmp | BIT_SCFG2[nr]);
+ data->sens[nr] = val;
+ break;
+ case 2: /* 3904 */
+ tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
+ w83781d_write_value(data, W83781D_REG_SCFG1,
+ tmp | BIT_SCFG1[nr]);
+ tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
+ w83781d_write_value(data, W83781D_REG_SCFG2,
+ tmp & ~BIT_SCFG2[nr]);
+ data->sens[nr] = val;
+ break;
+ case W83781D_DEFAULT_BETA:
+ dev_warn(dev,
+ "Sensor type %d is deprecated, please use 4 instead\n",
+ W83781D_DEFAULT_BETA);
+ /* fall through */
+ case 4: /* thermistor */
+ tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
+ w83781d_write_value(data, W83781D_REG_SCFG1,
+ tmp & ~BIT_SCFG1[nr]);
+ data->sens[nr] = val;
+ break;
+ default:
+ dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n",
+ (long) val);
+ break;
+ }
+
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
+ show_sensor, store_sensor, 0);
+static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
+ show_sensor, store_sensor, 1);
+static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
+ show_sensor, store_sensor, 2);
+
+/*
+ * Assumes that adapter is of I2C, not ISA variety.
+ * OTHERWISE DON'T CALL THIS
+ */
+static int
+w83781d_detect_subclients(struct i2c_client *new_client)
+{
+ int i, val1 = 0, id;
+ int err;
+ int address = new_client->addr;
+ unsigned short sc_addr[2];
+ struct i2c_adapter *adapter = new_client->adapter;
+ struct w83781d_data *data = i2c_get_clientdata(new_client);
+ enum chips kind = data->type;
+ int num_sc = 1;
+
+ id = i2c_adapter_id(adapter);
+
+ if (force_subclients[0] == id && force_subclients[1] == address) {
+ for (i = 2; i <= 3; i++) {
+ if (force_subclients[i] < 0x48 ||
+ force_subclients[i] > 0x4f) {
+ dev_err(&new_client->dev,
+ "Invalid subclient address %d; must be 0x48-0x4f\n",
+ force_subclients[i]);
+ err = -EINVAL;
+ goto ERROR_SC_1;
+ }
+ }
+ w83781d_write_value(data, W83781D_REG_I2C_SUBADDR,
+ (force_subclients[2] & 0x07) |
+ ((force_subclients[3] & 0x07) << 4));
+ sc_addr[0] = force_subclients[2];
+ } else {
+ val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR);
+ sc_addr[0] = 0x48 + (val1 & 0x07);
+ }
+
+ if (kind != w83783s) {
+ num_sc = 2;
+ if (force_subclients[0] == id &&
+ force_subclients[1] == address) {
+ sc_addr[1] = force_subclients[3];
+ } else {
+ sc_addr[1] = 0x48 + ((val1 >> 4) & 0x07);
+ }
+ if (sc_addr[0] == sc_addr[1]) {
+ dev_err(&new_client->dev,
+ "Duplicate addresses 0x%x for subclients.\n",
+ sc_addr[0]);
+ err = -EBUSY;
+ goto ERROR_SC_2;
+ }
+ }
+
+ for (i = 0; i < num_sc; i++) {
+ data->lm75[i] = i2c_new_dummy(adapter, sc_addr[i]);
+ if (!data->lm75[i]) {
+ dev_err(&new_client->dev,
+ "Subclient %d registration at address 0x%x failed.\n",
+ i, sc_addr[i]);
+ err = -ENOMEM;
+ if (i == 1)
+ goto ERROR_SC_3;
+ goto ERROR_SC_2;
+ }
+ }
+
+ return 0;
+
+/* Undo inits in case of errors */
+ERROR_SC_3:
+ i2c_unregister_device(data->lm75[0]);
+ERROR_SC_2:
+ERROR_SC_1:
+ return err;
+}
+
+#define IN_UNIT_ATTRS(X) \
+ &sensor_dev_attr_in##X##_input.dev_attr.attr, \
+ &sensor_dev_attr_in##X##_min.dev_attr.attr, \
+ &sensor_dev_attr_in##X##_max.dev_attr.attr, \
+ &sensor_dev_attr_in##X##_alarm.dev_attr.attr, \
+ &sensor_dev_attr_in##X##_beep.dev_attr.attr
+
+#define FAN_UNIT_ATTRS(X) \
+ &sensor_dev_attr_fan##X##_input.dev_attr.attr, \
+ &sensor_dev_attr_fan##X##_min.dev_attr.attr, \
+ &sensor_dev_attr_fan##X##_div.dev_attr.attr, \
+ &sensor_dev_attr_fan##X##_alarm.dev_attr.attr, \
+ &sensor_dev_attr_fan##X##_beep.dev_attr.attr
+
+#define TEMP_UNIT_ATTRS(X) \
+ &sensor_dev_attr_temp##X##_input.dev_attr.attr, \
+ &sensor_dev_attr_temp##X##_max.dev_attr.attr, \
+ &sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr, \
+ &sensor_dev_attr_temp##X##_alarm.dev_attr.attr, \
+ &sensor_dev_attr_temp##X##_beep.dev_attr.attr
+
+static struct attribute *w83781d_attributes[] = {
+ IN_UNIT_ATTRS(0),
+ IN_UNIT_ATTRS(2),
+ IN_UNIT_ATTRS(3),
+ IN_UNIT_ATTRS(4),
+ IN_UNIT_ATTRS(5),
+ IN_UNIT_ATTRS(6),
+ FAN_UNIT_ATTRS(1),
+ FAN_UNIT_ATTRS(2),
+ FAN_UNIT_ATTRS(3),
+ TEMP_UNIT_ATTRS(1),
+ TEMP_UNIT_ATTRS(2),
+ &dev_attr_cpu0_vid.attr,
+ &dev_attr_vrm.attr,
+ &dev_attr_alarms.attr,
+ &dev_attr_beep_mask.attr,
+ &sensor_dev_attr_beep_enable.dev_attr.attr,
+ NULL
+};
+static const struct attribute_group w83781d_group = {
+ .attrs = w83781d_attributes,
+};
+
+static struct attribute *w83781d_attributes_in1[] = {
+ IN_UNIT_ATTRS(1),
+ NULL
+};
+static const struct attribute_group w83781d_group_in1 = {
+ .attrs = w83781d_attributes_in1,
+};
+
+static struct attribute *w83781d_attributes_in78[] = {
+ IN_UNIT_ATTRS(7),
+ IN_UNIT_ATTRS(8),
+ NULL
+};
+static const struct attribute_group w83781d_group_in78 = {
+ .attrs = w83781d_attributes_in78,
+};
+
+static struct attribute *w83781d_attributes_temp3[] = {
+ TEMP_UNIT_ATTRS(3),
+ NULL
+};
+static const struct attribute_group w83781d_group_temp3 = {
+ .attrs = w83781d_attributes_temp3,
+};
+
+static struct attribute *w83781d_attributes_pwm12[] = {
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ &dev_attr_pwm2_enable.attr,
+ NULL
+};
+static const struct attribute_group w83781d_group_pwm12 = {
+ .attrs = w83781d_attributes_pwm12,
+};
+
+static struct attribute *w83781d_attributes_pwm34[] = {
+ &sensor_dev_attr_pwm3.dev_attr.attr,
+ &sensor_dev_attr_pwm4.dev_attr.attr,
+ NULL
+};
+static const struct attribute_group w83781d_group_pwm34 = {
+ .attrs = w83781d_attributes_pwm34,
+};
+
+static struct attribute *w83781d_attributes_other[] = {
+ &sensor_dev_attr_temp1_type.dev_attr.attr,
+ &sensor_dev_attr_temp2_type.dev_attr.attr,
+ &sensor_dev_attr_temp3_type.dev_attr.attr,
+ NULL
+};
+static const struct attribute_group w83781d_group_other = {
+ .attrs = w83781d_attributes_other,
+};
+
+/* No clean up is done on error, it's up to the caller */
+static int
+w83781d_create_files(struct device *dev, int kind, int is_isa)
+{
+ int err;
+
+ err = sysfs_create_group(&dev->kobj, &w83781d_group);
+ if (err)
+ return err;
+
+ if (kind != w83783s) {
+ err = sysfs_create_group(&dev->kobj, &w83781d_group_in1);
+ if (err)
+ return err;
+ }
+ if (kind != as99127f && kind != w83781d && kind != w83783s) {
+ err = sysfs_create_group(&dev->kobj, &w83781d_group_in78);
+ if (err)
+ return err;
+ }
+ if (kind != w83783s) {
+ err = sysfs_create_group(&dev->kobj, &w83781d_group_temp3);
+ if (err)
+ return err;
+
+ if (kind != w83781d) {
+ err = sysfs_chmod_file(&dev->kobj,
+ &sensor_dev_attr_temp3_alarm.dev_attr.attr,
+ S_IRUGO | S_IWUSR);
+ if (err)
+ return err;
+ }
+ }
+
+ if (kind != w83781d && kind != as99127f) {
+ err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm12);
+ if (err)
+ return err;
+ }
+ if (kind == w83782d && !is_isa) {
+ err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm34);
+ if (err)
+ return err;
+ }
+
+ if (kind != as99127f && kind != w83781d) {
+ err = device_create_file(dev,
+ &sensor_dev_attr_temp1_type.dev_attr);
+ if (err)
+ return err;
+ err = device_create_file(dev,
+ &sensor_dev_attr_temp2_type.dev_attr);
+ if (err)
+ return err;
+ if (kind != w83783s) {
+ err = device_create_file(dev,
+ &sensor_dev_attr_temp3_type.dev_attr);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int
+w83781d_detect(struct i2c_client *client, struct i2c_board_info *info)
+{
+ int val1, val2;
+ struct w83781d_data *isa = w83781d_data_if_isa();
+ struct i2c_adapter *adapter = client->adapter;
+ int address = client->addr;
+ const char *client_name;
+ enum vendor { winbond, asus } vendid;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ /*
+ * We block updates of the ISA device to minimize the risk of
+ * concurrent access to the same W83781D chip through different
+ * interfaces.
+ */
+ if (isa)
+ mutex_lock(&isa->update_lock);
+
+ if (i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG) & 0x80) {
+ dev_dbg(&adapter->dev,
+ "Detection of w83781d chip failed at step 3\n");
+ goto err_nodev;
+ }
+
+ val1 = i2c_smbus_read_byte_data(client, W83781D_REG_BANK);
+ val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
+ /* Check for Winbond or Asus ID if in bank 0 */
+ if (!(val1 & 0x07) &&
+ ((!(val1 & 0x80) && val2 != 0xa3 && val2 != 0xc3) ||
+ ((val1 & 0x80) && val2 != 0x5c && val2 != 0x12))) {
+ dev_dbg(&adapter->dev,
+ "Detection of w83781d chip failed at step 4\n");
+ goto err_nodev;
+ }
+ /*
+ * If Winbond SMBus, check address at 0x48.
+ * Asus doesn't support, except for as99127f rev.2
+ */
+ if ((!(val1 & 0x80) && val2 == 0xa3) ||
+ ((val1 & 0x80) && val2 == 0x5c)) {
+ if (i2c_smbus_read_byte_data(client, W83781D_REG_I2C_ADDR)
+ != address) {
+ dev_dbg(&adapter->dev,
+ "Detection of w83781d chip failed at step 5\n");
+ goto err_nodev;
+ }
+ }
+
+ /* Put it now into bank 0 and Vendor ID High Byte */
+ i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
+ (i2c_smbus_read_byte_data(client, W83781D_REG_BANK)
+ & 0x78) | 0x80);
+
+ /* Get the vendor ID */
+ val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
+ if (val2 == 0x5c)
+ vendid = winbond;
+ else if (val2 == 0x12)
+ vendid = asus;
+ else {
+ dev_dbg(&adapter->dev,
+ "w83781d chip vendor is neither Winbond nor Asus\n");
+ goto err_nodev;
+ }
+
+ /* Determine the chip type. */
+ val1 = i2c_smbus_read_byte_data(client, W83781D_REG_WCHIPID);
+ if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
+ client_name = "w83781d";
+ else if (val1 == 0x30 && vendid == winbond)
+ client_name = "w83782d";
+ else if (val1 == 0x40 && vendid == winbond && address == 0x2d)
+ client_name = "w83783s";
+ else if (val1 == 0x31)
+ client_name = "as99127f";
+ else
+ goto err_nodev;
+
+ if (val1 <= 0x30 && w83781d_alias_detect(client, val1)) {
+ dev_dbg(&adapter->dev,
+ "Device at 0x%02x appears to be the same as ISA device\n",
+ address);
+ goto err_nodev;
+ }
+
+ if (isa)
+ mutex_unlock(&isa->update_lock);
+
+ strlcpy(info->type, client_name, I2C_NAME_SIZE);
+
+ return 0;
+
+ err_nodev:
+ if (isa)
+ mutex_unlock(&isa->update_lock);
+ return -ENODEV;
+}
+
+static void w83781d_remove_files(struct device *dev)
+{
+ sysfs_remove_group(&dev->kobj, &w83781d_group);
+ sysfs_remove_group(&dev->kobj, &w83781d_group_in1);
+ sysfs_remove_group(&dev->kobj, &w83781d_group_in78);
+ sysfs_remove_group(&dev->kobj, &w83781d_group_temp3);
+ sysfs_remove_group(&dev->kobj, &w83781d_group_pwm12);
+ sysfs_remove_group(&dev->kobj, &w83781d_group_pwm34);
+ sysfs_remove_group(&dev->kobj, &w83781d_group_other);
+}
+
+static int
+w83781d_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct w83781d_data *data;
+ int err;
+
+ data = devm_kzalloc(dev, sizeof(struct w83781d_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->lock);
+ mutex_init(&data->update_lock);
+
+ data->type = id->driver_data;
+ data->client = client;
+
+ /* attach secondary i2c lm75-like clients */
+ err = w83781d_detect_subclients(client);
+ if (err)
+ return err;
+
+ /* Initialize the chip */
+ w83781d_init_device(dev);
+
+ /* Register sysfs hooks */
+ err = w83781d_create_files(dev, data->type, 0);
+ if (err)
+ goto exit_remove_files;
+
+ data->hwmon_dev = hwmon_device_register(dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
+ goto exit_remove_files;
+ }
+
+ return 0;
+
+ exit_remove_files:
+ w83781d_remove_files(dev);
+ if (data->lm75[0])
+ i2c_unregister_device(data->lm75[0]);
+ if (data->lm75[1])
+ i2c_unregister_device(data->lm75[1]);
+ return err;
+}
+
+static int
+w83781d_remove(struct i2c_client *client)
+{
+ struct w83781d_data *data = i2c_get_clientdata(client);
+ struct device *dev = &client->dev;
+
+ hwmon_device_unregister(data->hwmon_dev);
+ w83781d_remove_files(dev);
+
+ if (data->lm75[0])
+ i2c_unregister_device(data->lm75[0]);
+ if (data->lm75[1])
+ i2c_unregister_device(data->lm75[1]);
+
+ return 0;
+}
+
+static int
+w83781d_read_value_i2c(struct w83781d_data *data, u16 reg)
+{
+ struct i2c_client *client = data->client;
+ int res, bank;
+ struct i2c_client *cl;
+
+ bank = (reg >> 8) & 0x0f;
+ if (bank > 2)
+ /* switch banks */
+ i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
+ bank);
+ if (bank == 0 || bank > 2) {
+ res = i2c_smbus_read_byte_data(client, reg & 0xff);
+ } else {
+ /* switch to subclient */
+ cl = data->lm75[bank - 1];
+ /* convert from ISA to LM75 I2C addresses */
+ switch (reg & 0xff) {
+ case 0x50: /* TEMP */
+ res = i2c_smbus_read_word_swapped(cl, 0);
+ break;
+ case 0x52: /* CONFIG */
+ res = i2c_smbus_read_byte_data(cl, 1);
+ break;
+ case 0x53: /* HYST */
+ res = i2c_smbus_read_word_swapped(cl, 2);
+ break;
+ case 0x55: /* OVER */
+ default:
+ res = i2c_smbus_read_word_swapped(cl, 3);
+ break;
+ }
+ }
+ if (bank > 2)
+ i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
+
+ return res;
+}
+
+static int
+w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value)
+{
+ struct i2c_client *client = data->client;
+ int bank;
+ struct i2c_client *cl;
+
+ bank = (reg >> 8) & 0x0f;
+ if (bank > 2)
+ /* switch banks */
+ i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
+ bank);
+ if (bank == 0 || bank > 2) {
+ i2c_smbus_write_byte_data(client, reg & 0xff,
+ value & 0xff);
+ } else {
+ /* switch to subclient */
+ cl = data->lm75[bank - 1];
+ /* convert from ISA to LM75 I2C addresses */
+ switch (reg & 0xff) {
+ case 0x52: /* CONFIG */
+ i2c_smbus_write_byte_data(cl, 1, value & 0xff);
+ break;
+ case 0x53: /* HYST */
+ i2c_smbus_write_word_swapped(cl, 2, value);
+ break;
+ case 0x55: /* OVER */
+ i2c_smbus_write_word_swapped(cl, 3, value);
+ break;
+ }
+ }
+ if (bank > 2)
+ i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
+
+ return 0;
+}
+
+static void
+w83781d_init_device(struct device *dev)
+{
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ int i, p;
+ int type = data->type;
+ u8 tmp;
+
+ if (reset && type != as99127f) { /*
+ * this resets registers we don't have
+ * documentation for on the as99127f
+ */
+ /*
+ * Resetting the chip has been the default for a long time,
+ * but it causes the BIOS initializations (fan clock dividers,
+ * thermal sensor types...) to be lost, so it is now optional.
+ * It might even go away if nobody reports it as being useful,
+ * as I see very little reason why this would be needed at
+ * all.
+ */
+ dev_info(dev,
+ "If reset=1 solved a problem you were having, please report!\n");
+
+ /* save these registers */
+ i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
+ p = w83781d_read_value(data, W83781D_REG_PWMCLK12);
+ /*
+ * Reset all except Watchdog values and last conversion values
+ * This sets fan-divs to 2, among others
+ */
+ w83781d_write_value(data, W83781D_REG_CONFIG, 0x80);
+ /*
+ * Restore the registers and disable power-on abnormal beep.
+ * This saves FAN 1/2/3 input/output values set by BIOS.
+ */
+ w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
+ w83781d_write_value(data, W83781D_REG_PWMCLK12, p);
+ /*
+ * Disable master beep-enable (reset turns it on).
+ * Individual beep_mask should be reset to off but for some
+ * reason disabling this bit helps some people not get beeped
+ */
+ w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0);
+ }
+
+ /*
+ * Disable power-on abnormal beep, as advised by the datasheet.
+ * Already done if reset=1.
+ */
+ if (init && !reset && type != as99127f) {
+ i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
+ w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
+ }
+
+ data->vrm = vid_which_vrm();
+
+ if ((type != w83781d) && (type != as99127f)) {
+ tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
+ for (i = 1; i <= 3; i++) {
+ if (!(tmp & BIT_SCFG1[i - 1])) {
+ data->sens[i - 1] = 4;
+ } else {
+ if (w83781d_read_value
+ (data,
+ W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
+ data->sens[i - 1] = 1;
+ else
+ data->sens[i - 1] = 2;
+ }
+ if (type == w83783s && i == 2)
+ break;
+ }
+ }
+
+ if (init && type != as99127f) {
+ /* Enable temp2 */
+ tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG);
+ if (tmp & 0x01) {
+ dev_warn(dev,
+ "Enabling temp2, readings might not make sense\n");
+ w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG,
+ tmp & 0xfe);
+ }
+
+ /* Enable temp3 */
+ if (type != w83783s) {
+ tmp = w83781d_read_value(data,
+ W83781D_REG_TEMP3_CONFIG);
+ if (tmp & 0x01) {
+ dev_warn(dev,
+ "Enabling temp3, readings might not make sense\n");
+ w83781d_write_value(data,
+ W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
+ }
+ }
+ }
+
+ /* Start monitoring */
+ w83781d_write_value(data, W83781D_REG_CONFIG,
+ (w83781d_read_value(data,
+ W83781D_REG_CONFIG) & 0xf7)
+ | 0x01);
+
+ /* A few vars need to be filled upon startup */
+ for (i = 0; i < 3; i++) {
+ data->fan_min[i] = w83781d_read_value(data,
+ W83781D_REG_FAN_MIN(i));
+ }
+
+ mutex_init(&data->update_lock);
+}
+
+static struct w83781d_data *w83781d_update_device(struct device *dev)
+{
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int i;
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+ || !data->valid) {
+ dev_dbg(dev, "Starting device update\n");
+
+ for (i = 0; i <= 8; i++) {
+ if (data->type == w83783s && i == 1)
+ continue; /* 783S has no in1 */
+ data->in[i] =
+ w83781d_read_value(data, W83781D_REG_IN(i));
+ data->in_min[i] =
+ w83781d_read_value(data, W83781D_REG_IN_MIN(i));
+ data->in_max[i] =
+ w83781d_read_value(data, W83781D_REG_IN_MAX(i));
+ if ((data->type != w83782d) && (i == 6))
+ break;
+ }
+ for (i = 0; i < 3; i++) {
+ data->fan[i] =
+ w83781d_read_value(data, W83781D_REG_FAN(i));
+ data->fan_min[i] =
+ w83781d_read_value(data, W83781D_REG_FAN_MIN(i));
+ }
+ if (data->type != w83781d && data->type != as99127f) {
+ for (i = 0; i < 4; i++) {
+ data->pwm[i] =
+ w83781d_read_value(data,
+ W83781D_REG_PWM[i]);
+ /* Only W83782D on SMBus has PWM3 and PWM4 */
+ if ((data->type != w83782d || !client)
+ && i == 1)
+ break;
+ }
+ /* Only PWM2 can be disabled */
+ data->pwm2_enable = (w83781d_read_value(data,
+ W83781D_REG_PWMCLK12) & 0x08) >> 3;
+ }
+
+ data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1));
+ data->temp_max =
+ w83781d_read_value(data, W83781D_REG_TEMP_OVER(1));
+ data->temp_max_hyst =
+ w83781d_read_value(data, W83781D_REG_TEMP_HYST(1));
+ data->temp_add[0] =
+ w83781d_read_value(data, W83781D_REG_TEMP(2));
+ data->temp_max_add[0] =
+ w83781d_read_value(data, W83781D_REG_TEMP_OVER(2));
+ data->temp_max_hyst_add[0] =
+ w83781d_read_value(data, W83781D_REG_TEMP_HYST(2));
+ if (data->type != w83783s) {
+ data->temp_add[1] =
+ w83781d_read_value(data, W83781D_REG_TEMP(3));
+ data->temp_max_add[1] =
+ w83781d_read_value(data,
+ W83781D_REG_TEMP_OVER(3));
+ data->temp_max_hyst_add[1] =
+ w83781d_read_value(data,
+ W83781D_REG_TEMP_HYST(3));
+ }
+ i = w83781d_read_value(data, W83781D_REG_VID_FANDIV);
+ data->vid = i & 0x0f;
+ data->vid |= (w83781d_read_value(data,
+ W83781D_REG_CHIPID) & 0x01) << 4;
+ data->fan_div[0] = (i >> 4) & 0x03;
+ data->fan_div[1] = (i >> 6) & 0x03;
+ data->fan_div[2] = (w83781d_read_value(data,
+ W83781D_REG_PIN) >> 6) & 0x03;
+ if ((data->type != w83781d) && (data->type != as99127f)) {
+ i = w83781d_read_value(data, W83781D_REG_VBAT);
+ data->fan_div[0] |= (i >> 3) & 0x04;
+ data->fan_div[1] |= (i >> 4) & 0x04;
+ data->fan_div[2] |= (i >> 5) & 0x04;
+ }
+ if (data->type == w83782d) {
+ data->alarms = w83781d_read_value(data,
+ W83782D_REG_ALARM1)
+ | (w83781d_read_value(data,
+ W83782D_REG_ALARM2) << 8)
+ | (w83781d_read_value(data,
+ W83782D_REG_ALARM3) << 16);
+ } else if (data->type == w83783s) {
+ data->alarms = w83781d_read_value(data,
+ W83782D_REG_ALARM1)
+ | (w83781d_read_value(data,
+ W83782D_REG_ALARM2) << 8);
+ } else {
+ /*
+ * No real-time status registers, fall back to
+ * interrupt status registers
+ */
+ data->alarms = w83781d_read_value(data,
+ W83781D_REG_ALARM1)
+ | (w83781d_read_value(data,
+ W83781D_REG_ALARM2) << 8);
+ }
+ i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
+ data->beep_mask = (i << 8) +
+ w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
+ if ((data->type != w83781d) && (data->type != as99127f)) {
+ data->beep_mask |=
+ w83781d_read_value(data,
+ W83781D_REG_BEEP_INTS3) << 16;
+ }
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
+static const struct i2c_device_id w83781d_ids[] = {
+ { "w83781d", w83781d, },
+ { "w83782d", w83782d, },
+ { "w83783s", w83783s, },
+ { "as99127f", as99127f },
+ { /* LIST END */ }
+};
+MODULE_DEVICE_TABLE(i2c, w83781d_ids);
+
+static struct i2c_driver w83781d_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "w83781d",
+ },
+ .probe = w83781d_probe,
+ .remove = w83781d_remove,
+ .id_table = w83781d_ids,
+ .detect = w83781d_detect,
+ .address_list = normal_i2c,
+};
+
+/*
+ * ISA related code
+ */
+#ifdef CONFIG_ISA
+
+/* ISA device, if found */
+static struct platform_device *pdev;
+
+static unsigned short isa_address = 0x290;
+
+/*
+ * I2C devices get this name attribute automatically, but for ISA devices
+ * we must create it by ourselves.
+ */
+static ssize_t
+show_name(struct device *dev, struct device_attribute *devattr, char *buf)
+{
+ struct w83781d_data *data = dev_get_drvdata(dev);
+ return sprintf(buf, "%s\n", data->name);
+}
+static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
+
+static struct w83781d_data *w83781d_data_if_isa(void)
+{
+ return pdev ? platform_get_drvdata(pdev) : NULL;
+}
+
+/* Returns 1 if the I2C chip appears to be an alias of the ISA chip */
+static int w83781d_alias_detect(struct i2c_client *client, u8 chipid)
+{
+ struct w83781d_data *isa;
+ int i;
+
+ if (!pdev) /* No ISA chip */
+ return 0;
+
+ isa = platform_get_drvdata(pdev);
+
+ if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr)
+ return 0; /* Address doesn't match */
+ if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid)
+ return 0; /* Chip type doesn't match */
+
+ /*
+ * We compare all the limit registers, the config register and the
+ * interrupt mask registers
+ */
+ for (i = 0x2b; i <= 0x3d; i++) {
+ if (w83781d_read_value(isa, i) !=
+ i2c_smbus_read_byte_data(client, i))
+ return 0;
+ }
+ if (w83781d_read_value(isa, W83781D_REG_CONFIG) !=
+ i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG))
+ return 0;
+ for (i = 0x43; i <= 0x46; i++) {
+ if (w83781d_read_value(isa, i) !=
+ i2c_smbus_read_byte_data(client, i))
+ return 0;
+ }
+
+ return 1;
+}
+
+static int
+w83781d_read_value_isa(struct w83781d_data *data, u16 reg)
+{
+ int word_sized, res;
+
+ word_sized = (((reg & 0xff00) == 0x100)
+ || ((reg & 0xff00) == 0x200))
+ && (((reg & 0x00ff) == 0x50)
+ || ((reg & 0x00ff) == 0x53)
+ || ((reg & 0x00ff) == 0x55));
+ if (reg & 0xff00) {
+ outb_p(W83781D_REG_BANK,
+ data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ outb_p(reg >> 8,
+ data->isa_addr + W83781D_DATA_REG_OFFSET);
+ }
+ outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ res = inb_p(data->isa_addr + W83781D_DATA_REG_OFFSET);
+ if (word_sized) {
+ outb_p((reg & 0xff) + 1,
+ data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ res =
+ (res << 8) + inb_p(data->isa_addr +
+ W83781D_DATA_REG_OFFSET);
+ }
+ if (reg & 0xff00) {
+ outb_p(W83781D_REG_BANK,
+ data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
+ }
+ return res;
+}
+
+static void
+w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value)
+{
+ int word_sized;
+
+ word_sized = (((reg & 0xff00) == 0x100)
+ || ((reg & 0xff00) == 0x200))
+ && (((reg & 0x00ff) == 0x53)
+ || ((reg & 0x00ff) == 0x55));
+ if (reg & 0xff00) {
+ outb_p(W83781D_REG_BANK,
+ data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ outb_p(reg >> 8,
+ data->isa_addr + W83781D_DATA_REG_OFFSET);
+ }
+ outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ if (word_sized) {
+ outb_p(value >> 8,
+ data->isa_addr + W83781D_DATA_REG_OFFSET);
+ outb_p((reg & 0xff) + 1,
+ data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ }
+ outb_p(value & 0xff, data->isa_addr + W83781D_DATA_REG_OFFSET);
+ if (reg & 0xff00) {
+ outb_p(W83781D_REG_BANK,
+ data->isa_addr + W83781D_ADDR_REG_OFFSET);
+ outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
+ }
+}
+
+/*
+ * The SMBus locks itself, usually, but nothing may access the Winbond between
+ * bank switches. ISA access must always be locked explicitly!
+ * We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
+ * would slow down the W83781D access and should not be necessary.
+ * There are some ugly typecasts here, but the good news is - they should
+ * nowhere else be necessary!
+ */
+static int
+w83781d_read_value(struct w83781d_data *data, u16 reg)
+{
+ struct i2c_client *client = data->client;
+ int res;
+
+ mutex_lock(&data->lock);
+ if (client)
+ res = w83781d_read_value_i2c(data, reg);
+ else
+ res = w83781d_read_value_isa(data, reg);
+ mutex_unlock(&data->lock);
+ return res;
+}
+
+static int
+w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
+{
+ struct i2c_client *client = data->client;
+
+ mutex_lock(&data->lock);
+ if (client)
+ w83781d_write_value_i2c(data, reg, value);
+ else
+ w83781d_write_value_isa(data, reg, value);
+ mutex_unlock(&data->lock);
+ return 0;
+}
+
+static int
+w83781d_isa_probe(struct platform_device *pdev)
+{
+ int err, reg;
+ struct w83781d_data *data;
+ struct resource *res;
+
+ /* Reserve the ISA region */
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!devm_request_region(&pdev->dev,
+ res->start + W83781D_ADDR_REG_OFFSET, 2,
+ "w83781d"))
+ return -EBUSY;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(struct w83781d_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ mutex_init(&data->lock);
+ data->isa_addr = res->start;
+ platform_set_drvdata(pdev, data);
+
+ reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
+ switch (reg) {
+ case 0x30:
+ data->type = w83782d;
+ data->name = "w83782d";
+ break;
+ default:
+ data->type = w83781d;
+ data->name = "w83781d";
+ }
+
+ /* Initialize the W83781D chip */
+ w83781d_init_device(&pdev->dev);
+
+ /* Register sysfs hooks */
+ err = w83781d_create_files(&pdev->dev, data->type, 1);
+ if (err)
+ goto exit_remove_files;
+
+ err = device_create_file(&pdev->dev, &dev_attr_name);
+ 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:
+ w83781d_remove_files(&pdev->dev);
+ device_remove_file(&pdev->dev, &dev_attr_name);
+ return err;
+}
+
+static int
+w83781d_isa_remove(struct platform_device *pdev)
+{
+ struct w83781d_data *data = platform_get_drvdata(pdev);
+
+ hwmon_device_unregister(data->hwmon_dev);
+ w83781d_remove_files(&pdev->dev);
+ device_remove_file(&pdev->dev, &dev_attr_name);
+
+ return 0;
+}
+
+static struct platform_driver w83781d_isa_driver = {
+ .driver = {
+ .name = "w83781d",
+ },
+ .probe = w83781d_isa_probe,
+ .remove = w83781d_isa_remove,
+};
+
+/* return 1 if a supported chip is found, 0 otherwise */
+static int __init
+w83781d_isa_found(unsigned short address)
+{
+ int val, save, found = 0;
+ int port;
+
+ /*
+ * Some boards declare base+0 to base+7 as a PNP device, some base+4
+ * to base+7 and some base+5 to base+6. So we better request each port
+ * individually for the probing phase.
+ */
+ for (port = address; port < address + W83781D_EXTENT; port++) {
+ if (!request_region(port, 1, "w83781d")) {
+ pr_debug("Failed to request port 0x%x\n", port);
+ goto release;
+ }
+ }
+
+#define REALLY_SLOW_IO
+ /*
+ * We need the timeouts for at least some W83781D-like
+ * chips. But only if we read 'undefined' registers.
+ */
+ val = inb_p(address + 1);
+ if (inb_p(address + 2) != val
+ || inb_p(address + 3) != val
+ || inb_p(address + 7) != val) {
+ pr_debug("Detection failed at step %d\n", 1);
+ goto release;
+ }
+#undef REALLY_SLOW_IO
+
+ /*
+ * We should be able to change the 7 LSB of the address port. The
+ * MSB (busy flag) should be clear initially, set after the write.
+ */
+ save = inb_p(address + W83781D_ADDR_REG_OFFSET);
+ if (save & 0x80) {
+ pr_debug("Detection failed at step %d\n", 2);
+ goto release;
+ }
+ val = ~save & 0x7f;
+ outb_p(val, address + W83781D_ADDR_REG_OFFSET);
+ if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) {
+ outb_p(save, address + W83781D_ADDR_REG_OFFSET);
+ pr_debug("Detection failed at step %d\n", 3);
+ goto release;
+ }
+
+ /* We found a device, now see if it could be a W83781D */
+ outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET);
+ val = inb_p(address + W83781D_DATA_REG_OFFSET);
+ if (val & 0x80) {
+ pr_debug("Detection failed at step %d\n", 4);
+ goto release;
+ }
+ outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
+ save = inb_p(address + W83781D_DATA_REG_OFFSET);
+ outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET);
+ val = inb_p(address + W83781D_DATA_REG_OFFSET);
+ if ((!(save & 0x80) && (val != 0xa3))
+ || ((save & 0x80) && (val != 0x5c))) {
+ pr_debug("Detection failed at step %d\n", 5);
+ goto release;
+ }
+ outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET);
+ val = inb_p(address + W83781D_DATA_REG_OFFSET);
+ if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */
+ pr_debug("Detection failed at step %d\n", 6);
+ goto release;
+ }
+
+ /* The busy flag should be clear again */
+ if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) {
+ pr_debug("Detection failed at step %d\n", 7);
+ goto release;
+ }
+
+ /* Determine the chip type */
+ outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
+ save = inb_p(address + W83781D_DATA_REG_OFFSET);
+ outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET);
+ outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET);
+ val = inb_p(address + W83781D_DATA_REG_OFFSET);
+ if ((val & 0xfe) == 0x10 /* W83781D */
+ || val == 0x30) /* W83782D */
+ found = 1;
+
+ if (found)
+ pr_info("Found a %s chip at %#x\n",
+ val == 0x30 ? "W83782D" : "W83781D", (int)address);
+
+ release:
+ for (port--; port >= address; port--)
+ release_region(port, 1);
+ return found;
+}
+
+static int __init
+w83781d_isa_device_add(unsigned short address)
+{
+ struct resource res = {
+ .start = address,
+ .end = address + W83781D_EXTENT - 1,
+ .name = "w83781d",
+ .flags = IORESOURCE_IO,
+ };
+ int err;
+
+ pdev = platform_device_alloc("w83781d", 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:
+ pdev = NULL;
+ return err;
+}
+
+static int __init
+w83781d_isa_register(void)
+{
+ int res;
+
+ if (w83781d_isa_found(isa_address)) {
+ res = platform_driver_register(&w83781d_isa_driver);
+ if (res)
+ goto exit;
+
+ /* Sets global pdev as a side effect */
+ res = w83781d_isa_device_add(isa_address);
+ if (res)
+ goto exit_unreg_isa_driver;
+ }
+
+ return 0;
+
+exit_unreg_isa_driver:
+ platform_driver_unregister(&w83781d_isa_driver);
+exit:
+ return res;
+}
+
+static void
+w83781d_isa_unregister(void)
+{
+ if (pdev) {
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&w83781d_isa_driver);
+ }
+}
+#else /* !CONFIG_ISA */
+
+static struct w83781d_data *w83781d_data_if_isa(void)
+{
+ return NULL;
+}
+
+static int
+w83781d_alias_detect(struct i2c_client *client, u8 chipid)
+{
+ return 0;
+}
+
+static int
+w83781d_read_value(struct w83781d_data *data, u16 reg)
+{
+ int res;
+
+ mutex_lock(&data->lock);
+ res = w83781d_read_value_i2c(data, reg);
+ mutex_unlock(&data->lock);
+
+ return res;
+}
+
+static int
+w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
+{
+ mutex_lock(&data->lock);
+ w83781d_write_value_i2c(data, reg, value);
+ mutex_unlock(&data->lock);
+
+ return 0;
+}
+
+static int __init
+w83781d_isa_register(void)
+{
+ return 0;
+}
+
+static void
+w83781d_isa_unregister(void)
+{
+}
+#endif /* CONFIG_ISA */
+
+static int __init
+sensors_w83781d_init(void)
+{
+ int res;
+
+ /*
+ * We register the ISA device first, so that we can skip the
+ * registration of an I2C interface to the same device.
+ */
+ res = w83781d_isa_register();
+ if (res)
+ goto exit;
+
+ res = i2c_add_driver(&w83781d_driver);
+ if (res)
+ goto exit_unreg_isa;
+
+ return 0;
+
+ exit_unreg_isa:
+ w83781d_isa_unregister();
+ exit:
+ return res;
+}
+
+static void __exit
+sensors_w83781d_exit(void)
+{
+ w83781d_isa_unregister();
+ i2c_del_driver(&w83781d_driver);
+}
+
+MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
+ "Philip Edelbrock <phil@netroedge.com>, "
+ "and Mark Studebaker <mdsxyz123@yahoo.com>");
+MODULE_DESCRIPTION("W83781D driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_w83781d_init);
+module_exit(sensors_w83781d_exit);
Code Review / kvmfornfv.git / blobdiff