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leds: leds-mc13783: Use proper "max_brightness" value fo LEDs 

Instead of using maximum value of 255 and shift it to appropriate
LED duty cycle, this patch introduce a helper to use proper maximum
value for each LED.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Alexander Shiyan 2014-01-31 22:36:30 -08:00 committed by Bryan Wu
parent 02e9e11e24
commit 677d13f27e
1 changed files with 14 additions and 13 deletions
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27
drivers/leds/leds-mc13783.c
View File

@ -45,11 +45,21 @@ struct mc13xxx_leds {
struct mc13xxx_led led[0];
};
static unsigned int mc13xxx_max_brightness(int id)
{
if (id >= MC13783_LED_MD && id <= MC13783_LED_KP)
return 0x0f;
else if (id >= MC13783_LED_R1 && id <= MC13783_LED_B3)
return 0x1f;
return 0x3f;
}
static void mc13xxx_led_work(struct work_struct *work)
{
struct mc13xxx_led *led = container_of(work, struct mc13xxx_led, work);
struct mc13xxx_leds *leds = led->leds;
unsigned int reg, mask, value, bank, off, shift;
unsigned int reg, bank, off, shift;
switch (led->id) {
case MC13783_LED_MD:
@ -57,8 +67,6 @@ static void mc13xxx_led_work(struct work_struct *work)
case MC13783_LED_KP:
reg = 2;
shift = 9 + (led->id - MC13783_LED_MD) * 4;
mask = 0x0f;
value = led->new_brightness >> 4;
break;
case MC13783_LED_R1:
case MC13783_LED_G1:
@ -73,16 +81,12 @@ static void mc13xxx_led_work(struct work_struct *work)
bank = off / 3;
reg = 3 + bank;
shift = (off - bank * 3) * 5 + 6;
value = led->new_brightness >> 3;
mask = 0x1f;
break;
case MC13892_LED_MD:
case MC13892_LED_AD:
case MC13892_LED_KP:
reg = (led->id - MC13892_LED_MD) / 2;
shift = 3 + (led->id - MC13892_LED_MD) * 12;
mask = 0x3f;
value = led->new_brightness >> 2;
break;
case MC13892_LED_R:
case MC13892_LED_G:
@ -91,22 +95,19 @@ static void mc13xxx_led_work(struct work_struct *work)
bank = off / 2;
reg = 2 + bank;
shift = (off - bank * 2) * 12 + 3;
value = led->new_brightness >> 2;
mask = 0x3f;
break;
case MC34708_LED_R:
case MC34708_LED_G:
reg = 0;
shift = 3 + (led->id - MC34708_LED_R) * 12;
value = led->new_brightness >> 2;
mask = 0x3f;
break;
default:
BUG();
}
mc13xxx_reg_rmw(leds->master, leds->devtype->ledctrl_base + reg,
mask << shift, value << shift);
mc13xxx_max_brightness(led->id) << shift,
led->new_brightness << shift);
}
static void mc13xxx_led_set(struct led_classdev *led_cdev,
@ -186,7 +187,7 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev)
leds->led[i].cdev.default_trigger = trig;
leds->led[i].cdev.flags = LED_CORE_SUSPENDRESUME;
leds->led[i].cdev.brightness_set = mc13xxx_led_set;
leds->led[i].cdev.brightness = LED_OFF;
leds->led[i].cdev.max_brightness = mc13xxx_max_brightness(id);
INIT_WORK(&leds->led[i].work, mc13xxx_led_work);