diff options
| author | Riku Voipio <riku.voipio@iki.fi> | 2007-09-26 12:14:40 +0200 |
|---|---|---|
| committer | Mark M. Hoffman <mhoffman@lightlink.com> | 2007-11-08 14:42:46 +0100 |
| commit | ff312d07c2e1b1482fcc139b8af67ca39e9e98f0 (patch) | |
| tree | 21297694fea8776dd7713b2ea7b0cc9985ac40f4 /drivers | |
| parent | hwmon: (f75375s) Add new style bindings (diff) | |
| download | linux-ff312d07c2e1b1482fcc139b8af67ca39e9e98f0.tar.xz linux-ff312d07c2e1b1482fcc139b8af67ca39e9e98f0.zip | |
hwmon: (f75375s) Allow setting up fans with platform_data
Allow initializing fans on systems where BIOS does not do that by
default.
- define f75375s_platform_data in new file f75375s.h
- if platform_data was provided, set fans accordingly in f75375_init()
- split set_pwm_enable() to a sysfs callback and directly usable
set_pwm_enable_direct()
Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hwmon/f75375s.c | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c index 19b3427b5e9e..472b052770d3 100644 --- a/drivers/hwmon/f75375s.c +++ b/drivers/hwmon/f75375s.c @@ -34,6 +34,7 @@ #include <linux/i2c.h> #include <linux/err.h> #include <linux/mutex.h> +#include <linux/f75375s.h> /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END }; @@ -286,19 +287,14 @@ static ssize_t show_pwm_enable(struct device *dev, struct device_attribute return sprintf(buf, "%d\n", data->pwm_enable[nr]); } -static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) { - int nr = to_sensor_dev_attr(attr)->index; - struct i2c_client *client = to_i2c_client(dev); struct f75375_data *data = i2c_get_clientdata(client); - int val = simple_strtoul(buf, NULL, 10); u8 fanmode; if (val < 0 || val > 4) return -EINVAL; - mutex_lock(&data->update_lock); fanmode = f75375_read8(client, F75375_REG_FAN_TIMER); fanmode = ~(3 << FAN_CTRL_MODE(nr)); @@ -320,8 +316,22 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, } f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); data->pwm_enable[nr] = val; + return 0; +} + +static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + int err = 0; + + mutex_lock(&data->update_lock); + err = set_pwm_enable_direct(client, nr, val); mutex_unlock(&data->update_lock); - return count; + return err ? err : count; } static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr, @@ -604,9 +614,24 @@ static int f75375_detach_client(struct i2c_client *client) return 0; } +static void f75375_init(struct i2c_client *client, struct f75375_data *data, + struct f75375s_platform_data *f75375s_pdata) +{ + int nr; + set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]); + set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]); + for (nr = 0; nr < 2; nr++) { + data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255); + f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), + data->pwm[nr]); + } + +} + static int f75375_probe(struct i2c_client *client) { struct f75375_data *data = i2c_get_clientdata(client); + struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data; int err; if (!i2c_check_functionality(client->adapter, @@ -637,6 +662,9 @@ static int f75375_probe(struct i2c_client *client) goto exit_remove; } + if (f75375s_pdata != NULL) + f75375_init(client, data, f75375s_pdata); + return 0; exit_remove: |