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path: root/drivers/hwmon/lm63.c
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-rw-r--r--drivers/hwmon/lm63.c639
1 files changed, 339 insertions, 300 deletions
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c
index 5e6457a6644..848b9611151 100644
--- a/drivers/hwmon/lm63.c
+++ b/drivers/hwmon/lm63.c
@@ -1,7 +1,7 @@
/*
* lm63.c - driver for the National Semiconductor LM63 temperature sensor
* with integrated fan control
- * Copyright (C) 2004-2008 Jean Delvare <khali@linux-fr.org>
+ * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de>
* Based on the lm90 driver.
*
* The LM63 is a sensor chip made by National Semiconductor. It measures
@@ -148,52 +148,16 @@ static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END };
#define UPDATE_INTERVAL(max, rate) \
((1000 << (LM63_MAX_CONVRATE - (rate))) / (max))
-/*
- * Functions declaration
- */
-
-static int lm63_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int lm63_remove(struct i2c_client *client);
-
-static struct lm63_data *lm63_update_device(struct device *dev);
-
-static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info);
-static void lm63_init_client(struct i2c_client *client);
-
enum chips { lm63, lm64, lm96163 };
/*
- * Driver data (common to all clients)
- */
-
-static const struct i2c_device_id lm63_id[] = {
- { "lm63", lm63 },
- { "lm64", lm64 },
- { "lm96163", lm96163 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, lm63_id);
-
-static struct i2c_driver lm63_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "lm63",
- },
- .probe = lm63_probe,
- .remove = lm63_remove,
- .id_table = lm63_id,
- .detect = lm63_detect,
- .address_list = normal_i2c,
-};
-
-/*
* Client data (each client gets its own)
*/
struct lm63_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
+ const struct attribute_group *groups[5];
char valid; /* zero until following fields are valid */
char lut_valid; /* zero until lut fields are valid */
unsigned long last_updated; /* in jiffies */
@@ -242,6 +206,143 @@ static inline int lut_temp_from_reg(struct lm63_data *data, int nr)
return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000);
}
+static inline int lut_temp_to_reg(struct lm63_data *data, long val)
+{
+ val -= data->temp2_offset;
+ if (data->lut_temp_highres)
+ return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500);
+ else
+ return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000);
+}
+
+/*
+ * Update the lookup table register cache.
+ * client->update_lock must be held when calling this function.
+ */
+static void lm63_update_lut(struct lm63_data *data)
+{
+ struct i2c_client *client = data->client;
+ int i;
+
+ if (time_after(jiffies, data->lut_last_updated + 5 * HZ) ||
+ !data->lut_valid) {
+ for (i = 0; i < data->lut_size; i++) {
+ data->pwm1[1 + i] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LUT_PWM(i));
+ data->temp8[3 + i] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LUT_TEMP(i));
+ }
+ data->lut_temp_hyst = i2c_smbus_read_byte_data(client,
+ LM63_REG_LUT_TEMP_HYST);
+
+ data->lut_last_updated = jiffies;
+ data->lut_valid = 1;
+ }
+}
+
+static struct lm63_data *lm63_update_device(struct device *dev)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long next_update;
+
+ mutex_lock(&data->update_lock);
+
+ next_update = data->last_updated +
+ msecs_to_jiffies(data->update_interval);
+ if (time_after(jiffies, next_update) || !data->valid) {
+ if (data->config & 0x04) { /* tachometer enabled */
+ /* order matters for fan1_input */
+ data->fan[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_COUNT_LSB) & 0xFC;
+ data->fan[0] |= i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_COUNT_MSB) << 8;
+ data->fan[1] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_LIMIT_LSB) & 0xFC)
+ | (i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_LIMIT_MSB) << 8);
+ }
+
+ data->pwm1_freq = i2c_smbus_read_byte_data(client,
+ LM63_REG_PWM_FREQ);
+ if (data->pwm1_freq == 0)
+ data->pwm1_freq = 1;
+ data->pwm1[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_PWM_VALUE);
+
+ data->temp8[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LOCAL_TEMP);
+ data->temp8[1] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LOCAL_HIGH);
+
+ /* order matters for temp2_input */
+ data->temp11[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TEMP_MSB) << 8;
+ data->temp11[0] |= i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TEMP_LSB);
+ data->temp11[1] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_LOW_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_LOW_LSB);
+ data->temp11[2] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_HIGH_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_HIGH_LSB);
+ data->temp11[3] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_OFFSET_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_OFFSET_LSB);
+
+ if (data->kind == lm96163)
+ data->temp11u = (i2c_smbus_read_byte_data(client,
+ LM96163_REG_REMOTE_TEMP_U_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM96163_REG_REMOTE_TEMP_U_LSB);
+
+ data->temp8[2] = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TCRIT);
+ data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TCRIT_HYST);
+
+ data->alarms = i2c_smbus_read_byte_data(client,
+ LM63_REG_ALERT_STATUS) & 0x7F;
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ lm63_update_lut(data);
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
+/*
+ * Trip points in the lookup table should be in ascending order for both
+ * temperatures and PWM output values.
+ */
+static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data)
+{
+ int i;
+
+ mutex_lock(&data->update_lock);
+ lm63_update_lut(data);
+
+ for (i = 1; i < data->lut_size; i++) {
+ if (data->pwm1[1 + i - 1] > data->pwm1[1 + i]
+ || data->temp8[3 + i - 1] > data->temp8[3 + i]) {
+ dev_warn(dev,
+ "Lookup table doesn't look sane (check entries %d and %d)\n",
+ i, i + 1);
+ break;
+ }
+ }
+ mutex_unlock(&data->update_lock);
+
+ return i == data->lut_size ? 0 : 1;
+}
+
/*
* Sysfs callback functions and files
*/
@@ -257,8 +358,8 @@ static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
static ssize_t set_fan(struct device *dev, struct device_attribute *dummy,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int err;
@@ -294,13 +395,16 @@ static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr,
return sprintf(buf, "%d\n", pwm);
}
-static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy,
+static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = attr->index;
unsigned long val;
int err;
+ u8 reg;
if (!(data->config_fan & 0x20)) /* register is read-only */
return -EPERM;
@@ -309,11 +413,13 @@ static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy,
if (err)
return err;
- val = SENSORS_LIMIT(val, 0, 255);
+ reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE;
+ val = clamp_val(val, 0, 255);
+
mutex_lock(&data->update_lock);
- data->pwm1[0] = data->pwm_highres ? val :
+ data->pwm1[nr] = data->pwm_highres ? val :
(val * data->pwm1_freq * 2 + 127) / 255;
- i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1[0]);
+ i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]);
mutex_unlock(&data->update_lock);
return count;
}
@@ -325,6 +431,41 @@ static ssize_t show_pwm1_enable(struct device *dev,
return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
}
+static ssize_t set_pwm1_enable(struct device *dev,
+ struct device_attribute *dummy,
+ const char *buf, size_t count)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+ if (val < 1 || val > 2)
+ return -EINVAL;
+
+ /*
+ * Only let the user switch to automatic mode if the lookup table
+ * looks sane.
+ */
+ if (val == 2 && lm63_lut_looks_bad(dev, data))
+ return -EPERM;
+
+ mutex_lock(&data->update_lock);
+ data->config_fan = i2c_smbus_read_byte_data(client,
+ LM63_REG_CONFIG_FAN);
+ if (val == 1)
+ data->config_fan |= 0x20;
+ else
+ data->config_fan &= ~0x20;
+ i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN,
+ data->config_fan);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
/*
* There are 8bit registers for both local(temp1) and remote(temp2) sensor.
* For remote sensor registers temp2_offset has to be considered,
@@ -364,26 +505,34 @@ static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int nr = attr->index;
- int reg = nr == 2 ? LM63_REG_REMOTE_TCRIT : LM63_REG_LOCAL_HIGH;
long val;
int err;
int temp;
+ u8 reg;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
- if (nr == 2) {
+ switch (nr) {
+ case 2:
+ reg = LM63_REG_REMOTE_TCRIT;
if (data->remote_unsigned)
temp = TEMP8U_TO_REG(val - data->temp2_offset);
else
temp = TEMP8_TO_REG(val - data->temp2_offset);
- } else {
+ break;
+ case 1:
+ reg = LM63_REG_LOCAL_HIGH;
temp = TEMP8_TO_REG(val);
+ break;
+ default: /* lookup table */
+ reg = LM63_REG_LUT_TEMP(nr - 3);
+ temp = lut_temp_to_reg(data, val);
}
data->temp8[nr] = temp;
i2c_smbus_write_byte_data(client, reg, temp);
@@ -430,8 +579,8 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
};
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
long val;
int err;
int nr = attr->index;
@@ -486,8 +635,8 @@ static ssize_t set_temp2_crit_hyst(struct device *dev,
struct device_attribute *dummy,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
long val;
int err;
long hyst;
@@ -508,11 +657,11 @@ static ssize_t set_temp2_crit_hyst(struct device *dev,
* Set conversion rate.
* client->update_lock must be held when calling this function.
*/
-static void lm63_set_convrate(struct i2c_client *client, struct lm63_data *data,
- unsigned int interval)
+static void lm63_set_convrate(struct lm63_data *data, unsigned int interval)
{
- int i;
+ struct i2c_client *client = data->client;
unsigned int update_interval;
+ int i;
/* Shift calculations to avoid rounding errors */
interval <<= 6;
@@ -540,8 +689,7 @@ static ssize_t set_update_interval(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
unsigned long val;
int err;
@@ -550,7 +698,7 @@ static ssize_t set_update_interval(struct device *dev,
return err;
mutex_lock(&data->update_lock);
- lm63_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000));
+ lm63_set_convrate(data, clamp_val(val, 0, 100000));
mutex_unlock(&data->update_lock);
return count;
@@ -559,8 +707,7 @@ static ssize_t set_update_interval(struct device *dev,
static ssize_t show_type(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
return sprintf(buf, data->trutherm ? "1\n" : "2\n");
}
@@ -568,8 +715,8 @@ static ssize_t show_type(struct device *dev, struct device_attribute *attr,
static ssize_t set_type(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int ret;
u8 reg;
@@ -613,65 +760,78 @@ static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan,
set_fan, 1);
static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0);
-static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IRUGO, show_pwm1, NULL, 1);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IRUGO,
- show_lut_temp, NULL, 3);
+static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
+ show_pwm1_enable, set_pwm1_enable);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 1);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 3);
static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 3);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IRUGO, show_pwm1, NULL, 2);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO,
- show_lut_temp, NULL, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 2);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 4);
static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 4);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IRUGO, show_pwm1, NULL, 3);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IRUGO,
- show_lut_temp, NULL, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 3);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 5);
static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 5);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IRUGO, show_pwm1, NULL, 4);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IRUGO,
- show_lut_temp, NULL, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 6);
static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 6);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IRUGO, show_pwm1, NULL, 5);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IRUGO,
- show_lut_temp, NULL, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 7);
static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 7);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IRUGO, show_pwm1, NULL, 6);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IRUGO,
- show_lut_temp, NULL, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 8);
static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 8);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IRUGO, show_pwm1, NULL, 7);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IRUGO,
- show_lut_temp, NULL, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 9);
static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 9);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IRUGO, show_pwm1, NULL, 8);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IRUGO,
- show_lut_temp, NULL, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 10);
static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 10);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IRUGO, show_pwm1, NULL, 9);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IRUGO,
- show_lut_temp, NULL, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 11);
static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 11);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IRUGO, show_pwm1, NULL, 10);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IRUGO,
- show_lut_temp, NULL, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 12);
static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 12);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IRUGO, show_pwm1, NULL, 11);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IRUGO,
- show_lut_temp, NULL, 13);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 13);
static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 13);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IRUGO, show_pwm1, NULL, 12);
-static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IRUGO,
- show_lut_temp, NULL, 14);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 14);
static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO,
show_lut_temp_hyst, NULL, 14);
@@ -753,6 +913,15 @@ static struct attribute *lm63_attributes[] = {
NULL
};
+static struct attribute *lm63_attributes_temp2_type[] = {
+ &dev_attr_temp2_type.attr,
+ NULL
+};
+
+static const struct attribute_group lm63_group_temp2_type = {
+ .attrs = lm63_attributes_temp2_type,
+};
+
static struct attribute *lm63_attributes_extra_lut[] = {
&sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr,
@@ -784,8 +953,7 @@ static umode_t lm63_attribute_mode(struct kobject *kobj,
struct attribute *attr, int index)
{
struct device *dev = container_of(kobj, struct device, kobj);
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct lm63_data *data = dev_get_drvdata(dev);
if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr
&& (data->kind == lm64 ||
@@ -817,28 +985,25 @@ static const struct attribute_group lm63_group_fan1 = {
*/
/* Return 0 if detection is successful, -ENODEV otherwise */
-static int lm63_detect(struct i2c_client *new_client,
+static int lm63_detect(struct i2c_client *client,
struct i2c_board_info *info)
{
- struct i2c_adapter *adapter = new_client->adapter;
+ struct i2c_adapter *adapter = client->adapter;
u8 man_id, chip_id, reg_config1, reg_config2;
u8 reg_alert_status, reg_alert_mask;
- int address = new_client->addr;
+ int address = client->addr;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- man_id = i2c_smbus_read_byte_data(new_client, LM63_REG_MAN_ID);
- chip_id = i2c_smbus_read_byte_data(new_client, LM63_REG_CHIP_ID);
+ man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID);
+ chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID);
- reg_config1 = i2c_smbus_read_byte_data(new_client,
- LM63_REG_CONFIG1);
- reg_config2 = i2c_smbus_read_byte_data(new_client,
- LM63_REG_CONFIG2);
- reg_alert_status = i2c_smbus_read_byte_data(new_client,
+ reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
+ reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2);
+ reg_alert_status = i2c_smbus_read_byte_data(client,
LM63_REG_ALERT_STATUS);
- reg_alert_mask = i2c_smbus_read_byte_data(new_client,
- LM63_REG_ALERT_MASK);
+ reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK);
if (man_id != 0x01 /* National Semiconductor */
|| (reg_config1 & 0x18) != 0x00
@@ -863,81 +1028,14 @@ static int lm63_detect(struct i2c_client *new_client,
return 0;
}
-static int lm63_probe(struct i2c_client *new_client,
- const struct i2c_device_id *id)
-{
- struct lm63_data *data;
- int err;
-
- data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL);
- if (!data) {
- err = -ENOMEM;
- goto exit;
- }
-
- i2c_set_clientdata(new_client, data);
- data->valid = 0;
- mutex_init(&data->update_lock);
-
- /* Set the device type */
- data->kind = id->driver_data;
- if (data->kind == lm64)
- data->temp2_offset = 16000;
-
- /* Initialize chip */
- lm63_init_client(new_client);
-
- /* Register sysfs hooks */
- err = sysfs_create_group(&new_client->dev.kobj, &lm63_group);
- if (err)
- goto exit_free;
- if (data->config & 0x04) { /* tachometer enabled */
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm63_group_fan1);
- if (err)
- goto exit_remove_files;
- }
- if (data->kind == lm96163) {
- err = device_create_file(&new_client->dev,
- &dev_attr_temp2_type);
- if (err)
- goto exit_remove_files;
-
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm63_group_extra_lut);
- if (err)
- goto exit_remove_files;
- }
-
- data->hwmon_dev = hwmon_device_register(&new_client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto exit_remove_files;
- }
-
- return 0;
-
-exit_remove_files:
- sysfs_remove_group(&new_client->dev.kobj, &lm63_group);
- sysfs_remove_group(&new_client->dev.kobj, &lm63_group_fan1);
- if (data->kind == lm96163) {
- device_remove_file(&new_client->dev, &dev_attr_temp2_type);
- sysfs_remove_group(&new_client->dev.kobj,
- &lm63_group_extra_lut);
- }
-exit_free:
- kfree(data);
-exit:
- return err;
-}
-
/*
* Ideally we shouldn't have to initialize anything, since the BIOS
* should have taken care of everything
*/
-static void lm63_init_client(struct i2c_client *client)
+static void lm63_init_client(struct lm63_data *data)
{
- struct lm63_data *data = i2c_get_clientdata(client);
+ struct i2c_client *client = data->client;
+ struct device *dev = &client->dev;
u8 convrate;
data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
@@ -946,7 +1044,7 @@ static void lm63_init_client(struct i2c_client *client)
/* Start converting if needed */
if (data->config & 0x40) { /* standby */
- dev_dbg(&client->dev, "Switching to operational mode\n");
+ dev_dbg(dev, "Switching to operational mode\n");
data->config &= 0xA7;
i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1,
data->config);
@@ -999,139 +1097,80 @@ static void lm63_init_client(struct i2c_client *client)
/* Show some debug info about the LM63 configuration */
if (data->kind == lm63)
- dev_dbg(&client->dev, "Alert/tach pin configured for %s\n",
+ dev_dbg(dev, "Alert/tach pin configured for %s\n",
(data->config & 0x04) ? "tachometer input" :
"alert output");
- dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n",
+ dev_dbg(dev, "PWM clock %s kHz, output frequency %u Hz\n",
(data->config_fan & 0x08) ? "1.4" : "360",
((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq);
- dev_dbg(&client->dev, "PWM output active %s, %s mode\n",
+ dev_dbg(dev, "PWM output active %s, %s mode\n",
(data->config_fan & 0x10) ? "low" : "high",
(data->config_fan & 0x20) ? "manual" : "auto");
}
-static int lm63_remove(struct i2c_client *client)
-{
- struct lm63_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &lm63_group);
- sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1);
- if (data->kind == lm96163) {
- device_remove_file(&client->dev, &dev_attr_temp2_type);
- sysfs_remove_group(&client->dev.kobj, &lm63_group_extra_lut);
- }
-
- kfree(data);
- return 0;
-}
-
-static struct lm63_data *lm63_update_device(struct device *dev)
+static int lm63_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm63_data *data = i2c_get_clientdata(client);
- unsigned long next_update;
- int i;
-
- mutex_lock(&data->update_lock);
-
- next_update = data->last_updated
- + msecs_to_jiffies(data->update_interval) + 1;
-
- if (time_after(jiffies, next_update) || !data->valid) {
- if (data->config & 0x04) { /* tachometer enabled */
- /* order matters for fan1_input */
- data->fan[0] = i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_COUNT_LSB) & 0xFC;
- data->fan[0] |= i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_COUNT_MSB) << 8;
- data->fan[1] = (i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_LIMIT_LSB) & 0xFC)
- | (i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_LIMIT_MSB) << 8);
- }
-
- data->pwm1_freq = i2c_smbus_read_byte_data(client,
- LM63_REG_PWM_FREQ);
- if (data->pwm1_freq == 0)
- data->pwm1_freq = 1;
- data->pwm1[0] = i2c_smbus_read_byte_data(client,
- LM63_REG_PWM_VALUE);
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct lm63_data *data;
+ int groups = 0;
- data->temp8[0] = i2c_smbus_read_byte_data(client,
- LM63_REG_LOCAL_TEMP);
- data->temp8[1] = i2c_smbus_read_byte_data(client,
- LM63_REG_LOCAL_HIGH);
+ data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
- /* order matters for temp2_input */
- data->temp11[0] = i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_TEMP_MSB) << 8;
- data->temp11[0] |= i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_TEMP_LSB);
- data->temp11[1] = (i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_LOW_MSB) << 8)
- | i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_LOW_LSB);
- data->temp11[2] = (i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_HIGH_MSB) << 8)
- | i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_HIGH_LSB);
- data->temp11[3] = (i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_OFFSET_MSB) << 8)
- | i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_OFFSET_LSB);
+ data->client = client;
+ mutex_init(&data->update_lock);
- if (data->kind == lm96163)
- data->temp11u = (i2c_smbus_read_byte_data(client,
- LM96163_REG_REMOTE_TEMP_U_MSB) << 8)
- | i2c_smbus_read_byte_data(client,
- LM96163_REG_REMOTE_TEMP_U_LSB);
+ /* Set the device type */
+ data->kind = id->driver_data;
+ if (data->kind == lm64)
+ data->temp2_offset = 16000;
- data->temp8[2] = i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_TCRIT);
- data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_TCRIT_HYST);
+ /* Initialize chip */
+ lm63_init_client(data);
- data->alarms = i2c_smbus_read_byte_data(client,
- LM63_REG_ALERT_STATUS) & 0x7F;
+ /* Register sysfs hooks */
+ data->groups[groups++] = &lm63_group;
+ if (data->config & 0x04) /* tachometer enabled */
+ data->groups[groups++] = &lm63_group_fan1;
- data->last_updated = jiffies;
- data->valid = 1;
+ if (data->kind == lm96163) {
+ data->groups[groups++] = &lm63_group_temp2_type;
+ data->groups[groups++] = &lm63_group_extra_lut;
}
- if (time_after(jiffies, data->lut_last_updated + 5 * HZ) ||
- !data->lut_valid) {
- for (i = 0; i < data->lut_size; i++) {
- data->pwm1[1 + i] = i2c_smbus_read_byte_data(client,
- LM63_REG_LUT_PWM(i));
- data->temp8[3 + i] = i2c_smbus_read_byte_data(client,
- LM63_REG_LUT_TEMP(i));
- }
- data->lut_temp_hyst = i2c_smbus_read_byte_data(client,
- LM63_REG_LUT_TEMP_HYST);
-
- data->lut_last_updated = jiffies;
- data->lut_valid = 1;
- }
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data, data->groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
- mutex_unlock(&data->update_lock);
+/*
+ * Driver data (common to all clients)
+ */
- return data;
-}
+static const struct i2c_device_id lm63_id[] = {
+ { "lm63", lm63 },
+ { "lm64", lm64 },
+ { "lm96163", lm96163 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm63_id);
-static int __init sensors_lm63_init(void)
-{
- return i2c_add_driver(&lm63_driver);
-}
+static struct i2c_driver lm63_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "lm63",
+ },
+ .probe = lm63_probe,
+ .id_table = lm63_id,
+ .detect = lm63_detect,
+ .address_list = normal_i2c,
+};
-static void __exit sensors_lm63_exit(void)
-{
- i2c_del_driver(&lm63_driver);
-}
+module_i2c_driver(lm63_driver);
-MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
+MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
MODULE_DESCRIPTION("LM63 driver");
MODULE_LICENSE("GPL");
-
-module_init(sensors_lm63_init);
-module_exit(sensors_lm63_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 12:05:10 +0000