forked from luck/tmp_suning_uos_patched
leds-lp55xx: use lp55xx common led registration function
LED class devices are registered in lp5521_register_leds() and lp5523_register_leds(). Two separate functions are merged into consolidated lp55xx function, lp55xx_register_leds(). Error handling fix: Unregistering LEDS are handled in lp55xx_register_leds() when LED registration failure occurs. So each driver error handler is changed to 'err_register_leds' Chip dependency: 'brightness_work_fn' and 'set_led_current' To make the structure abstract, both functions are configured in each driver. Those functions should be done by each driver because register control is chip-dependant work. lp55xx_init_led: skeleton Will be filled in next patch Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Milo(Woogyom) Kim
Bryan Wu
parent
6ce6176263
commit
9e9b3db1b2
|
|
@ -738,44 +738,6 @@ static int lp5521_init_led(struct lp5521_led *led,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int lp5521_register_leds(struct lp5521_chip *chip)
|
||||
{
|
||||
struct lp5521_platform_data *pdata = chip->pdata;
|
||||
struct i2c_client *client = chip->client;
|
||||
int i;
|
||||
int led;
|
||||
int ret;
|
||||
|
||||
/* Initialize leds */
|
||||
chip->num_channels = pdata->num_channels;
|
||||
chip->num_leds = 0;
|
||||
led = 0;
|
||||
for (i = 0; i < pdata->num_channels; i++) {
|
||||
/* Do not initialize channels that are not connected */
|
||||
if (pdata->led_config[i].led_current == 0)
|
||||
continue;
|
||||
|
||||
ret = lp5521_init_led(&chip->leds[led], client, i, pdata);
|
||||
if (ret) {
|
||||
dev_err(&client->dev, "error initializing leds\n");
|
||||
return ret;
|
||||
}
|
||||
chip->num_leds++;
|
||||
|
||||
chip->leds[led].id = led;
|
||||
/* Set initial LED current */
|
||||
lp5521_set_led_current(chip, led,
|
||||
chip->leds[led].led_current);
|
||||
|
||||
INIT_WORK(&(chip->leds[led].brightness_work),
|
||||
lp5521_led_brightness_work);
|
||||
|
||||
led++;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void lp5521_unregister_leds(struct lp5521_chip *chip)
|
||||
{
|
||||
int i;
|
||||
|
|
@ -836,9 +798,9 @@ static int lp5521_probe(struct i2c_client *client,
|
|||
|
||||
dev_info(&client->dev, "%s programmable led chip found\n", id->name);
|
||||
|
||||
ret = lp5521_register_leds(old_chip);
|
||||
ret = lp55xx_register_leds(led, chip);
|
||||
if (ret)
|
||||
goto fail2;
|
||||
goto err_register_leds;
|
||||
|
||||
ret = lp5521_register_sysfs(client);
|
||||
if (ret) {
|
||||
|
|
@ -848,6 +810,7 @@ static int lp5521_probe(struct i2c_client *client,
|
|||
return ret;
|
||||
fail2:
|
||||
lp5521_unregister_leds(old_chip);
|
||||
err_register_leds:
|
||||
lp55xx_deinit_device(chip);
|
||||
err_init:
|
||||
return ret;
|
||||
|
|
|
|||
|
|
@ -822,46 +822,6 @@ static int lp5523_init_led(struct lp5523_led *led, struct device *dev,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int lp5523_register_leds(struct lp5523_chip *chip, const char *name)
|
||||
{
|
||||
struct lp5523_platform_data *pdata = chip->pdata;
|
||||
struct i2c_client *client = chip->client;
|
||||
int i;
|
||||
int led;
|
||||
int ret;
|
||||
|
||||
/* Initialize leds */
|
||||
chip->num_channels = pdata->num_channels;
|
||||
chip->num_leds = 0;
|
||||
led = 0;
|
||||
for (i = 0; i < pdata->num_channels; i++) {
|
||||
/* Do not initialize channels that are not connected */
|
||||
if (pdata->led_config[i].led_current == 0)
|
||||
continue;
|
||||
|
||||
INIT_WORK(&chip->leds[led].brightness_work,
|
||||
lp5523_led_brightness_work);
|
||||
|
||||
ret = lp5523_init_led(&chip->leds[led], &client->dev, i, pdata,
|
||||
name);
|
||||
if (ret) {
|
||||
dev_err(&client->dev, "error initializing leds\n");
|
||||
return ret;
|
||||
}
|
||||
chip->num_leds++;
|
||||
|
||||
chip->leds[led].id = led;
|
||||
/* Set LED current */
|
||||
lp5523_write(client,
|
||||
LP5523_REG_LED_CURRENT_BASE + chip->leds[led].chan_nr,
|
||||
chip->leds[led].led_current);
|
||||
|
||||
led++;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void lp5523_unregister_leds(struct lp5523_chip *chip)
|
||||
{
|
||||
int i;
|
||||
|
|
@ -922,9 +882,9 @@ static int lp5523_probe(struct i2c_client *client,
|
|||
|
||||
dev_info(&client->dev, "%s Programmable led chip found\n", id->name);
|
||||
|
||||
ret = lp5523_register_leds(old_chip, id->name);
|
||||
ret = lp55xx_register_leds(led, chip);
|
||||
if (ret)
|
||||
goto fail2;
|
||||
goto err_register_leds;
|
||||
|
||||
ret = lp5523_register_sysfs(client);
|
||||
if (ret) {
|
||||
|
|
@ -934,6 +894,7 @@ static int lp5523_probe(struct i2c_client *client,
|
|||
return ret;
|
||||
fail2:
|
||||
lp5523_unregister_leds(old_chip);
|
||||
err_register_leds:
|
||||
lp55xx_deinit_device(chip);
|
||||
err_init:
|
||||
return ret;
|
||||
|
|
|
|||
|
|
@ -63,6 +63,12 @@ static int lp55xx_post_init_device(struct lp55xx_chip *chip)
|
|||
return cfg->post_init_device(chip);
|
||||
}
|
||||
|
||||
static int lp55xx_init_led(struct lp55xx_led *led,
|
||||
struct lp55xx_chip *chip, int chan)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val)
|
||||
{
|
||||
return i2c_smbus_write_byte_data(chip->cl, reg, val);
|
||||
|
|
@ -170,6 +176,55 @@ void lp55xx_deinit_device(struct lp55xx_chip *chip)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(lp55xx_deinit_device);
|
||||
|
||||
int lp55xx_register_leds(struct lp55xx_led *led, struct lp55xx_chip *chip)
|
||||
{
|
||||
struct lp55xx_platform_data *pdata = chip->pdata;
|
||||
struct lp55xx_device_config *cfg = chip->cfg;
|
||||
int num_channels = pdata->num_channels;
|
||||
struct lp55xx_led *each;
|
||||
u8 led_current;
|
||||
int ret;
|
||||
int i;
|
||||
|
||||
if (!cfg->brightness_work_fn) {
|
||||
dev_err(&chip->cl->dev, "empty brightness configuration\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
for (i = 0; i < num_channels; i++) {
|
||||
|
||||
/* do not initialize channels that are not connected */
|
||||
if (pdata->led_config[i].led_current == 0)
|
||||
continue;
|
||||
|
||||
led_current = pdata->led_config[i].led_current;
|
||||
each = led + i;
|
||||
ret = lp55xx_init_led(each, chip, i);
|
||||
if (ret)
|
||||
goto err_init_led;
|
||||
|
||||
INIT_WORK(&each->brightness_work, cfg->brightness_work_fn);
|
||||
|
||||
chip->num_leds++;
|
||||
each->chip = chip;
|
||||
|
||||
/* setting led current at each channel */
|
||||
if (cfg->set_led_current)
|
||||
cfg->set_led_current(each, led_current);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_init_led:
|
||||
for (i = 0; i < chip->num_leds; i++) {
|
||||
each = led + i;
|
||||
led_classdev_unregister(&each->cdev);
|
||||
flush_work(&each->brightness_work);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(lp55xx_register_leds);
|
||||
|
||||
MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>");
|
||||
MODULE_DESCRIPTION("LP55xx Common Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
|
|||
|
|
@ -33,6 +33,8 @@ struct lp55xx_reg {
|
|||
* @reset : Chip specific reset command
|
||||
* @enable : Chip specific enable command
|
||||
* @post_init_device : Chip specific initialization code
|
||||
* @brightness_work_fn : Brightness work function
|
||||
* @set_led_current : LED current set function
|
||||
*/
|
||||
struct lp55xx_device_config {
|
||||
const struct lp55xx_reg reset;
|
||||
|
|
@ -40,6 +42,12 @@ struct lp55xx_device_config {
|
|||
|
||||
/* define if the device has specific initialization process */
|
||||
int (*post_init_device) (struct lp55xx_chip *chip);
|
||||
|
||||
/* access brightness register */
|
||||
void (*brightness_work_fn)(struct work_struct *work);
|
||||
|
||||
/* current setting function */
|
||||
void (*set_led_current) (struct lp55xx_led *led, u8 led_current);
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
@ -88,4 +96,7 @@ extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg,
|
|||
extern int lp55xx_init_device(struct lp55xx_chip *chip);
|
||||
extern void lp55xx_deinit_device(struct lp55xx_chip *chip);
|
||||
|
||||
/* common LED class device functions */
|
||||
extern int lp55xx_register_leds(struct lp55xx_led *led,
|
||||
struct lp55xx_chip *chip);
|
||||
#endif /* _LEDS_LP55XX_COMMON_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user