diff options
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-lp5523.c | 56 |
1 files changed, 16 insertions, 40 deletions
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c index 6cb41607519..d0c4068ecdd 100644 --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -105,7 +105,6 @@ #define SHIFT_MASK(id) (((id) - 1) * 2) struct lp5523_engine { - const struct attribute_group *attributes; int id; u8 mode; u8 prog_page; @@ -403,14 +402,23 @@ static ssize_t store_engine_leds(struct device *dev, struct i2c_client *client = to_i2c_client(dev); struct lp5523_chip *chip = i2c_get_clientdata(client); u16 mux = 0; + ssize_t ret; if (lp5523_mux_parse(buf, &mux, len)) return -EINVAL; + mutex_lock(&chip->lock); + ret = -EINVAL; + if (chip->engines[nr - 1].mode != LP5523_CMD_LOAD) + goto leave; + if (lp5523_load_mux(&chip->engines[nr - 1], mux)) - return -EINVAL; + goto leave; - return len; + ret = len; +leave: + mutex_unlock(&chip->lock); + return ret; } #define store_leds(nr) \ @@ -556,7 +564,11 @@ static int lp5523_do_store_load(struct lp5523_engine *engine, mutex_lock(&chip->lock); - ret = lp5523_load_program(engine, pattern); + if (engine->mode == LP5523_CMD_LOAD) + ret = lp5523_load_program(engine, pattern); + else + ret = -EINVAL; + mutex_unlock(&chip->lock); if (ret) { @@ -737,37 +749,18 @@ static struct attribute *lp5523_attributes[] = { &dev_attr_engine2_mode.attr, &dev_attr_engine3_mode.attr, &dev_attr_selftest.attr, - NULL -}; - -static struct attribute *lp5523_engine1_attributes[] = { &dev_attr_engine1_load.attr, &dev_attr_engine1_leds.attr, - NULL -}; - -static struct attribute *lp5523_engine2_attributes[] = { &dev_attr_engine2_load.attr, &dev_attr_engine2_leds.attr, - NULL -}; - -static struct attribute *lp5523_engine3_attributes[] = { &dev_attr_engine3_load.attr, &dev_attr_engine3_leds.attr, - NULL }; static const struct attribute_group lp5523_group = { .attrs = lp5523_attributes, }; -static const struct attribute_group lp5523_engine_group[] = { - {.attrs = lp5523_engine1_attributes }, - {.attrs = lp5523_engine2_attributes }, - {.attrs = lp5523_engine3_attributes }, -}; - static int lp5523_register_sysfs(struct i2c_client *client) { struct device *dev = &client->dev; @@ -788,10 +781,6 @@ static void lp5523_unregister_sysfs(struct i2c_client *client) sysfs_remove_group(&dev->kobj, &lp5523_group); - for (i = 0; i < ARRAY_SIZE(chip->engines); i++) - if (chip->engines[i].mode == LP5523_CMD_LOAD) - sysfs_remove_group(&dev->kobj, &lp5523_engine_group[i]); - for (i = 0; i < chip->num_leds; i++) sysfs_remove_group(&chip->leds[i].cdev.dev->kobj, &lp5523_led_attribute_group); @@ -802,10 +791,6 @@ static void lp5523_unregister_sysfs(struct i2c_client *client) /*--------------------------------------------------------------*/ static int lp5523_set_mode(struct lp5523_engine *engine, u8 mode) { - /* engine to chip */ - struct lp5523_chip *chip = engine_to_lp5523(engine); - struct i2c_client *client = chip->client; - struct device *dev = &client->dev; int ret = 0; /* if in that mode already do nothing, except for run */ @@ -817,18 +802,10 @@ static int lp5523_set_mode(struct lp5523_engine *engine, u8 mode) } else if (mode == LP5523_CMD_LOAD) { lp5523_set_engine_mode(engine, LP5523_CMD_DISABLED); lp5523_set_engine_mode(engine, LP5523_CMD_LOAD); - - ret = sysfs_create_group(&dev->kobj, engine->attributes); - if (ret) - return ret; } else if (mode == LP5523_CMD_DISABLED) { lp5523_set_engine_mode(engine, LP5523_CMD_DISABLED); } - /* remove load attribute from sysfs if not in load mode */ - if (engine->mode == LP5523_CMD_LOAD && mode != LP5523_CMD_LOAD) - sysfs_remove_group(&dev->kobj, engine->attributes); - engine->mode = mode; return ret; @@ -845,7 +822,6 @@ static int __init lp5523_init_engine(struct lp5523_engine *engine, int id) engine->engine_mask = LP5523_ENG_MASK_BASE >> SHIFT_MASK(id); engine->prog_page = id - 1; engine->mux_page = id + 2; - engine->attributes = &lp5523_engine_group[id - 1]; return 0; } |