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authorJean-Jacques Hiblot <jjhiblot@ti.com>2019-09-23 12:02:50 +0200
committerPavel <pavel@ucw.cz>2019-11-03 17:38:09 +0100
commita2cafdfd8cf5ad8adda6c0ce44a59f46431edf02 (patch)
tree0f8261c0d918a3dc164d25ac1d0701a2a978dca1 /drivers/leds
parentda61a66a829d67b854089aa5ec4c5a2031bb0864 (diff)
leds: tlc591xx: update the maximum brightness
The TLC chips actually offer 257 levels: - 0: led OFF - 1-255: Led dimmed is using a PWM. The duty cycle range from 0.4% to 99.6% - 256: led fully ON Fixes: e370d010a5fe ("leds: tlc591xx: Driver for the TI 8/16 Channel i2c LED driver") Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Signed-off-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-tlc591xx.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
index 8eadb673dc2e..a8911ebd30e5 100644
--- a/drivers/leds/leds-tlc591xx.c
+++ b/drivers/leds/leds-tlc591xx.c
@@ -13,6 +13,7 @@
#include <linux/slab.h>
#define TLC591XX_MAX_LEDS 16
+#define TLC591XX_MAX_BRIGHTNESS 256
#define TLC591XX_REG_MODE1 0x00
#define MODE1_RESPON_ADDR_MASK 0xF0
@@ -112,11 +113,11 @@ tlc591xx_brightness_set(struct led_classdev *led_cdev,
struct tlc591xx_priv *priv = led->priv;
int err;
- switch (brightness) {
+ switch ((int)brightness) {
case 0:
err = tlc591xx_set_ledout(priv, led, LEDOUT_OFF);
break;
- case LED_FULL:
+ case TLC591XX_MAX_BRIGHTNESS:
err = tlc591xx_set_ledout(priv, led, LEDOUT_ON);
break;
default:
@@ -209,7 +210,7 @@ tlc591xx_probe(struct i2c_client *client,
led->priv = priv;
led->led_no = reg;
led->ldev.brightness_set_blocking = tlc591xx_brightness_set;
- led->ldev.max_brightness = LED_FULL;
+ led->ldev.max_brightness = TLC591XX_MAX_BRIGHTNESS;
err = devm_led_classdev_register_ext(dev, &led->ldev,
&init_data);
if (err < 0) {