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authorÁlvaro Fernández Rojas <noltari@gmail.com>2015-10-08 12:35:53 +0200
committerJacek Anaszewski <j.anaszewski@samsung.com>2015-11-03 08:59:40 +0100
commitd8fe1606d1a7181c877d8b1727cdcfb82f76e91c (patch)
treed7e4a1627e6d7686ce06cf9438232f830ba63efa /drivers/leds/leds-bcm6328.c
parent79653fbb3365002899e7d25ec5ca96aff4241ede (diff)
downloadlinux-d8fe1606d1a7181c877d8b1727cdcfb82f76e91c.tar.bz2
leds-bcm6328: simplify and improve default-state handling
This patch simplifies and improves the code related to default-state handling. It also changes the code to power off the LEDs by default. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Diffstat (limited to 'drivers/leds/leds-bcm6328.c')
-rw-r--r--drivers/leds/leds-bcm6328.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/leds/leds-bcm6328.c b/drivers/leds/leds-bcm6328.c
index e1c19557450f..bf063fae4ad0 100644
--- a/drivers/leds/leds-bcm6328.c
+++ b/drivers/leds/leds-bcm6328.c
@@ -281,11 +281,10 @@ static int bcm6328_led(struct device *dev, struct device_node *nc, u32 reg,
"linux,default-trigger",
NULL);
+ spin_lock_irqsave(lock, flags);
if (!of_property_read_string(nc, "default-state", &state)) {
- spin_lock_irqsave(lock, flags);
if (!strcmp(state, "on")) {
led->cdev.brightness = LED_FULL;
- bcm6328_led_mode(led, BCM6328_LED_MODE_ON);
} else if (!strcmp(state, "keep")) {
void __iomem *mode;
unsigned long val, shift;
@@ -296,21 +295,28 @@ static int bcm6328_led(struct device *dev, struct device_node *nc, u32 reg,
else
mode = mem + BCM6328_REG_MODE_LO;
- val = bcm6328_led_read(mode) >> (shift % 16);
+ val = bcm6328_led_read(mode) >>
+ BCM6328_LED_SHIFT(shift % 16);
val &= BCM6328_LED_MODE_MASK;
- if (val == BCM6328_LED_MODE_ON)
+ if ((led->active_low && val == BCM6328_LED_MODE_ON) ||
+ (!led->active_low && val == BCM6328_LED_MODE_OFF))
led->cdev.brightness = LED_FULL;
- else {
+ else
led->cdev.brightness = LED_OFF;
- bcm6328_led_mode(led, BCM6328_LED_MODE_OFF);
- }
} else {
led->cdev.brightness = LED_OFF;
- bcm6328_led_mode(led, BCM6328_LED_MODE_OFF);
}
- spin_unlock_irqrestore(lock, flags);
+ } else {
+ led->cdev.brightness = LED_OFF;
}
+ if ((led->active_low && led->cdev.brightness == LED_FULL) ||
+ (!led->active_low && led->cdev.brightness == LED_OFF))
+ bcm6328_led_mode(led, BCM6328_LED_MODE_ON);
+ else
+ bcm6328_led_mode(led, BCM6328_LED_MODE_OFF);
+ spin_unlock_irqrestore(lock, flags);
+
led->cdev.brightness_set = bcm6328_led_set;
led->cdev.blink_set = bcm6328_blink_set;