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leds-bcm6328: add more init configuration options

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This patch adds more init register configuration options:
- Serial LEDs multiplexing.
- Serial LEDs clock signal low/high polarity.
- Serial LEDs data signal low/high polarity.
- Serial LEDs shift direction inverted/normal.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
This commit is contained in:
Álvaro Fernández Rojas 2015-10-08 12:35:54 +02:00 committed by Jacek Anaszewski
parent d8fe1606d1
commit 9f82c778ce
1 changed files with 14 additions and 1 deletions
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15
drivers/leds/leds-bcm6328.c
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@ -41,6 +41,11 @@
#define BCM6328_SERIAL_LED_SHIFT_DIR BIT(16)
#define BCM6328_LED_SHIFT_TEST BIT(30)
#define BCM6328_LED_TEST BIT(31)
#define BCM6328_INIT_MASK (BCM6328_SERIAL_LED_EN | \
BCM6328_SERIAL_LED_MUX | \
BCM6328_SERIAL_LED_CLK_NPOL | \
BCM6328_SERIAL_LED_DATA_PPOL | \
BCM6328_SERIAL_LED_SHIFT_DIR)
#define BCM6328_LED_MODE_MASK 3
#define BCM6328_LED_MODE_OFF 0
@ -366,9 +371,17 @@ static int bcm6328_leds_probe(struct platform_device *pdev)
bcm6328_led_write(mem + BCM6328_REG_LNKACTSEL_LO, 0);
val = bcm6328_led_read(mem + BCM6328_REG_INIT);
val &= ~BCM6328_SERIAL_LED_EN;
val &= ~(BCM6328_INIT_MASK);
if (of_property_read_bool(np, "brcm,serial-leds"))
val |= BCM6328_SERIAL_LED_EN;
if (of_property_read_bool(np, "brcm,serial-mux"))
val |= BCM6328_SERIAL_LED_MUX;
if (of_property_read_bool(np, "brcm,serial-clk-low"))
val |= BCM6328_SERIAL_LED_CLK_NPOL;
if (!of_property_read_bool(np, "brcm,serial-dat-low"))
val |= BCM6328_SERIAL_LED_DATA_PPOL;
if (!of_property_read_bool(np, "brcm,serial-shift-inv"))
val |= BCM6328_SERIAL_LED_SHIFT_DIR;
bcm6328_led_write(mem + BCM6328_REG_INIT, val);
for_each_available_child_of_node(np, child) {