This patch makes sure blink hardware is disabled for selected GPIO. Blink
hardware is controled by GPO_BLINK register and is available for GPIOs from 0
to 31.
Signed-off-by: Vincent Donnefort <vdonnef...@gmail.com>
---
Changes for v2:
- Rebased on for-next branch of linux-gpio git tree
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git
drivers/gpio/gpio-ich.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c
index e16d932..2729e3d 100644
--- a/drivers/gpio/gpio-ich.c
+++ b/drivers/gpio/gpio-ich.c
@@ -41,12 +41,14 @@ enum GPIO_REG {
GPIO_USE_SEL = 0,
GPIO_IO_SEL,
GPIO_LVL,
+ GPO_BLINK
};
-static const u8 ichx_regs[3][3] = {
+static const u8 ichx_regs[4][3] = {
{0x00, 0x30, 0x40}, /* USE_SEL[1-3] offsets */
{0x04, 0x34, 0x44}, /* IO_SEL[1-3] offsets */
{0x0c, 0x38, 0x48}, /* LVL[1-3] offsets */
+ {0x18, 0x18, 0x18}, /* BLINK offset */
};
static const u8 ichx_reglen[3] = {
@@ -148,6 +150,10 @@ static int ichx_gpio_direction_input(struct gpio_chip
*gpio, unsigned nr)
static int ichx_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
int val)
{
+ /* Disable blink hardware which is available for GPIOs from 0 to 31. */
+ if (nr < 32)
+ ichx_write_bit(GPO_BLINK, nr, 0, 0);
+
/* Set GPIO output value. */
ichx_write_bit(GPIO_LVL, nr, val, 0);
--
1.7.9.5
--
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