diff options
| -rw-r--r-- | drivers/leds/leds-pca9532.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c index 244ae3ff79b5..c7a4f677ed4d 100644 --- a/drivers/leds/leds-pca9532.c +++ b/drivers/leds/leds-pca9532.c @@ -53,6 +53,7 @@ struct pca9532_data { #define PCA9532_PWM_ID_1 1 u8 pwm[2]; u8 psc[2]; + bool hw_blink; }; static int pca9532_probe(struct i2c_client *client); @@ -238,8 +239,13 @@ static int pca9532_set_blink(struct led_classdev *led_cdev, unsigned long *delay_on, unsigned long *delay_off) { struct pca9532_led *led = ldev_to_led(led_cdev); + struct i2c_client *client = led->client; + struct pca9532_data *data = i2c_get_clientdata(client); int err; + if (!data->hw_blink) + return -EINVAL; + if (*delay_on == 0 && *delay_off == 0) { /* led subsystem ask us for a blink rate */ *delay_on = 1000; @@ -395,6 +401,7 @@ static int pca9532_configure(struct i2c_client *client, data->psc[i]); } + data->hw_blink = true; for (i = 0; i < data->chip_info->num_leds; i++) { struct pca9532_led *led = &data->leds[i]; struct pca9532_led *pled = &pdata->leds[i]; @@ -429,6 +436,8 @@ static int pca9532_configure(struct i2c_client *client, pca9532_setled(led); break; case PCA9532_TYPE_N2100_BEEP: + /* PWM1 is reserved for beeper so blink will not use hardware */ + data->hw_blink = false; BUG_ON(data->idev); led->state = PCA9532_PWM1; pca9532_setled(led); |