diff options
Diffstat (limited to 'drivers/i2c/chips/lm90.c')
| -rw-r--r-- | drivers/i2c/chips/lm90.c | 273 |
1 files changed, 151 insertions, 122 deletions
diff --git a/drivers/i2c/chips/lm90.c b/drivers/i2c/chips/lm90.c index 2c00ff83babc..a67dcadf7cb0 100644 --- a/drivers/i2c/chips/lm90.c +++ b/drivers/i2c/chips/lm90.c @@ -1,7 +1,7 @@ /* * lm90.c - Part of lm_sensors, Linux kernel modules for hardware * monitoring - * Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org> + * Copyright (C) 2003-2005 Jean Delvare <khali@linux-fr.org> * * Based on the lm83 driver. The LM90 is a sensor chip made by National * Semiconductor. It reports up to two temperatures (its own plus up to @@ -19,7 +19,7 @@ * Complete datasheets can be obtained from National's website at: * http://www.national.com/pf/LM/LM89.html * http://www.national.com/pf/LM/LM99.html - * Note that there is no way to differenciate between both chips. + * Note that there is no way to differentiate between both chips. * * This driver also supports the LM86, another sensor chip made by * National Semiconductor. It is exactly similar to the LM90 except it @@ -39,7 +39,7 @@ * chips made by Maxim. These chips are similar to the LM86. Complete * datasheet can be obtained at Maxim's website at: * http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2578 - * Note that there is no easy way to differenciate between the three + * Note that there is no easy way to differentiate between the three * variants. The extra address and features of the MAX6659 are not * supported by this driver. * @@ -70,13 +70,13 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> #include <linux/i2c-sensor.h> +#include <linux/hwmon-sysfs.h> /* * Addresses to scan @@ -139,9 +139,9 @@ SENSORS_INSMOD_6(lm90, adm1032, lm99, lm86, max6657, adt7461); /* * Conversions and various macros * For local temperatures and limits, critical limits and the hysteresis - * value, the LM90 uses signed 8-bit values with LSB = 1 degree Celcius. + * value, the LM90 uses signed 8-bit values with LSB = 1 degree Celsius. * For remote temperatures and limits, it uses signed 11-bit values with - * LSB = 0.125 degree Celcius, left-justified in 16-bit registers. + * LSB = 0.125 degree Celsius, left-justified in 16-bit registers. */ #define TEMP1_FROM_REG(val) ((val) * 1000) @@ -206,9 +206,14 @@ struct lm90_data { int kind; /* registers values */ - s8 temp_input1, temp_low1, temp_high1; /* local */ - s16 temp_input2, temp_low2, temp_high2; /* remote, combined */ - s8 temp_crit1, temp_crit2; + s8 temp8[5]; /* 0: local input + 1: local low limit + 2: local high limit + 3: local critical limit + 4: remote critical limit */ + s16 temp11[3]; /* 0: remote input + 1: remote low limit + 2: remote high limit */ u8 temp_hyst; u8 alarms; /* bitvector */ }; @@ -217,75 +222,88 @@ struct lm90_data { * Sysfs stuff */ -#define show_temp(value, converter) \ -static ssize_t show_##value(struct device *dev, char *buf) \ -{ \ - struct lm90_data *data = lm90_update_device(dev); \ - return sprintf(buf, "%d\n", converter(data->value)); \ +static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct lm90_data *data = lm90_update_device(dev); + return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp8[attr->index])); +} + +static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, + const char *buf, size_t count) +{ + static const u8 reg[4] = { + LM90_REG_W_LOCAL_LOW, + LM90_REG_W_LOCAL_HIGH, + LM90_REG_W_LOCAL_CRIT, + LM90_REG_W_REMOTE_CRIT, + }; + + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct i2c_client *client = to_i2c_client(dev); + struct lm90_data *data = i2c_get_clientdata(client); + long val = simple_strtol(buf, NULL, 10); + int nr = attr->index; + + down(&data->update_lock); + if (data->kind == adt7461) + data->temp8[nr] = TEMP1_TO_REG_ADT7461(val); + else + data->temp8[nr] = TEMP1_TO_REG(val); + i2c_smbus_write_byte_data(client, reg[nr - 1], data->temp8[nr]); + up(&data->update_lock); + return count; } -show_temp(temp_input1, TEMP1_FROM_REG); -show_temp(temp_input2, TEMP2_FROM_REG); -show_temp(temp_low1, TEMP1_FROM_REG); -show_temp(temp_low2, TEMP2_FROM_REG); -show_temp(temp_high1, TEMP1_FROM_REG); -show_temp(temp_high2, TEMP2_FROM_REG); -show_temp(temp_crit1, TEMP1_FROM_REG); -show_temp(temp_crit2, TEMP1_FROM_REG); - -#define set_temp1(value, reg) \ -static ssize_t set_##value(struct device *dev, const char *buf, \ - size_t count) \ -{ \ - struct i2c_client *client = to_i2c_client(dev); \ - struct lm90_data *data = i2c_get_clientdata(client); \ - long val = simple_strtol(buf, NULL, 10); \ - \ - down(&data->update_lock); \ - if (data->kind == adt7461) \ - data->value = TEMP1_TO_REG_ADT7461(val); \ - else \ - data->value = TEMP1_TO_REG(val); \ - i2c_smbus_write_byte_data(client, reg, data->value); \ - up(&data->update_lock); \ - return count; \ + +static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct lm90_data *data = lm90_update_device(dev); + return sprintf(buf, "%d\n", TEMP2_FROM_REG(data->temp11[attr->index])); } -#define set_temp2(value, regh, regl) \ -static ssize_t set_##value(struct device *dev, const char *buf, \ - size_t count) \ -{ \ - struct i2c_client *client = to_i2c_client(dev); \ - struct lm90_data *data = i2c_get_clientdata(client); \ - long val = simple_strtol(buf, NULL, 10); \ - \ - down(&data->update_lock); \ - if (data->kind == adt7461) \ - data->value = TEMP2_TO_REG_ADT7461(val); \ - else \ - data->value = TEMP2_TO_REG(val); \ - i2c_smbus_write_byte_data(client, regh, data->value >> 8); \ - i2c_smbus_write_byte_data(client, regl, data->value & 0xff); \ - up(&data->update_lock); \ - return count; \ + +static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, + const char *buf, size_t count) +{ + static const u8 reg[4] = { + LM90_REG_W_REMOTE_LOWH, + LM90_REG_W_REMOTE_LOWL, + LM90_REG_W_REMOTE_HIGHH, + LM90_REG_W_REMOTE_HIGHL, + }; + + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct i2c_client *client = to_i2c_client(dev); + struct lm90_data *data = i2c_get_clientdata(client); + long val = simple_strtol(buf, NULL, 10); + int nr = attr->index; + + down(&data->update_lock); + if (data->kind == adt7461) + data->temp11[nr] = TEMP2_TO_REG_ADT7461(val); + else + data->temp11[nr] = TEMP2_TO_REG(val); + i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], + data->temp11[nr] >> 8); + i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], + data->temp11[nr] & 0xff); + up(&data->update_lock); + return count; } -set_temp1(temp_low1, LM90_REG_W_LOCAL_LOW); -set_temp2(temp_low2, LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL); -set_temp1(temp_high1, LM90_REG_W_LOCAL_HIGH); -set_temp2(temp_high2, LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL); -set_temp1(temp_crit1, LM90_REG_W_LOCAL_CRIT); -set_temp1(temp_crit2, LM90_REG_W_REMOTE_CRIT); - -#define show_temp_hyst(value, basereg) \ -static ssize_t show_##value(struct device *dev, char *buf) \ -{ \ - struct lm90_data *data = lm90_update_device(dev); \ - return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->basereg) \ - - TEMP1_FROM_REG(data->temp_hyst)); \ + +static ssize_t show_temphyst(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct lm90_data *data = lm90_update_device(dev); + return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp8[attr->index]) + - TEMP1_FROM_REG(data->temp_hyst)); } -show_temp_hyst(temp_hyst1, temp_crit1); -show_temp_hyst(temp_hyst2, temp_crit2); -static ssize_t set_temp_hyst1(struct device *dev, const char *buf, - size_t count) +static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy, + const char *buf, size_t count) { struct i2c_client *client = to_i2c_client(dev); struct lm90_data *data = i2c_get_clientdata(client); @@ -293,36 +311,37 @@ static ssize_t set_temp_hyst1(struct device *dev, const char *buf, long hyst; down(&data->update_lock); - hyst = TEMP1_FROM_REG(data->temp_crit1) - val; + hyst = TEMP1_FROM_REG(data->temp8[3]) - val; i2c_smbus_write_byte_data(client, LM90_REG_W_TCRIT_HYST, HYST_TO_REG(hyst)); up(&data->update_lock); return count; } -static ssize_t show_alarms(struct device *dev, char *buf) +static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, + char *buf) { struct lm90_data *data = lm90_update_device(dev); return sprintf(buf, "%d\n", data->alarms); } -static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); -static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input2, NULL); -static DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_low1, - set_temp_low1); -static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_low2, - set_temp_low2); -static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_high1, - set_temp_high1); -static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_high2, - set_temp_high2); -static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit1, - set_temp_crit1); -static DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit2, - set_temp_crit2); -static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_hyst1, - set_temp_hyst1); -static DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_hyst2, NULL); +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0); +static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); +static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp8, + set_temp8, 1); +static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, + set_temp11, 1); +static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8, + set_temp8, 2); +static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, + set_temp11, 2); +static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp8, + set_temp8, 3); +static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8, + set_temp8, 4); +static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst, + set_temphyst, 3); +static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 4); static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); /* @@ -481,16 +500,26 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind) lm90_init_client(new_client); /* Register sysfs hooks */ - device_create_file(&new_client->dev, &dev_attr_temp1_input); - device_create_file(&new_client->dev, &dev_attr_temp2_input); - device_create_file(&new_client->dev, &dev_attr_temp1_min); - device_create_file(&new_client->dev, &dev_attr_temp2_min); - device_create_file(&new_client->dev, &dev_attr_temp1_max); - device_create_file(&new_client->dev, &dev_attr_temp2_max); - device_create_file(&new_client->dev, &dev_attr_temp1_crit); - device_create_file(&new_client->dev, &dev_attr_temp2_crit); - device_create_file(&new_client->dev, &dev_attr_temp1_crit_hyst); - device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp2_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp2_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp2_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_crit.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp2_crit.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_crit_hyst.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp2_crit_hyst.dev_attr); device_create_file(&new_client->dev, &dev_attr_alarms); return 0; @@ -541,16 +570,16 @@ static struct lm90_data *lm90_update_device(struct device *dev) u8 oldh, newh; dev_dbg(&client->dev, "Updating lm90 data.\n"); - data->temp_input1 = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_TEMP); - data->temp_high1 = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_HIGH); - data->temp_low1 = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_LOW); - data->temp_crit1 = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_CRIT); - data->temp_crit2 = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_CRIT); + data->temp8[0] = i2c_smbus_read_byte_data(client, + LM90_REG_R_LOCAL_TEMP); + data->temp8[1] = i2c_smbus_read_byte_data(client, + LM90_REG_R_LOCAL_LOW); + data->temp8[2] = i2c_smbus_read_byte_data(client, + LM90_REG_R_LOCAL_HIGH); + data->temp8[3] = i2c_smbus_read_byte_data(client, + LM90_REG_R_LOCAL_CRIT); + data->temp8[4] = i2c_smbus_read_byte_data(client, + LM90_REG_R_REMOTE_CRIT); data->temp_hyst = i2c_smbus_read_byte_data(client, LM90_REG_R_TCRIT_HYST); @@ -570,13 +599,13 @@ static struct lm90_data *lm90_update_device(struct device *dev) */ oldh = i2c_smbus_read_byte_data(client, LM90_REG_R_REMOTE_TEMPH); - data->temp_input2 = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_TEMPL); + data->temp11[0] = i2c_smbus_read_byte_data(client, + LM90_REG_R_REMOTE_TEMPL); newh = i2c_smbus_read_byte_data(client, LM90_REG_R_REMOTE_TEMPH); if (newh != oldh) { - data->temp_input2 = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_TEMPL); + data->temp11[0] = i2c_smbus_read_byte_data(client, + LM90_REG_R_REMOTE_TEMPL); #ifdef DEBUG oldh = i2c_smbus_read_byte_data(client, LM90_REG_R_REMOTE_TEMPH); @@ -586,16 +615,16 @@ static struct lm90_data *lm90_update_device(struct device *dev) "wrong.\n"); #endif } - data->temp_input2 |= (newh << 8); + data->temp11[0] |= (newh << 8); - data->temp_high2 = (i2c_smbus_read_byte_data(client, + data->temp11[1] = (i2c_smbus_read_byte_data(client, + LM90_REG_R_REMOTE_LOWH) << 8) + + i2c_smbus_read_byte_data(client, + LM90_REG_R_REMOTE_LOWL); + data->temp11[2] = (i2c_smbus_read_byte_data(client, LM90_REG_R_REMOTE_HIGHH) << 8) + i2c_smbus_read_byte_data(client, LM90_REG_R_REMOTE_HIGHL); - data->temp_low2 = (i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_LOWH) << 8) + - i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_LOWL); data->alarms = i2c_smbus_read_byte_data(client, LM90_REG_R_STATUS); |