From 2e7f6122642773fa467ab80adc30ef20c80dbda6 Mon Sep 17 00:00:00 2001 From: Brunner Michael Date: Wed, 31 Jul 2013 20:55:39 +0200 Subject: [PATCH] gpio: Fix bit masking in Kontron PLD GPIO driver This patch fixes the bit masking within the GPIO driver. The masking is basically done twice which causes the wrong GPIOs to be addressed. Signed-off-by: Michael Brunner Signed-off-by: Guenter Roeck Signed-off-by: Linus Walleij --- drivers/gpio/gpio-kempld.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/gpio/gpio-kempld.c b/drivers/gpio/gpio-kempld.c index 3f0e13b0595..efdc3924d7d 100644 --- a/drivers/gpio/gpio-kempld.c +++ b/drivers/gpio/gpio-kempld.c @@ -46,9 +46,9 @@ static void kempld_gpio_bitop(struct kempld_device_data *pld, status = kempld_read8(pld, reg); if (val) - status |= (1 << bit); + status |= KEMPLD_GPIO_MASK(bit); else - status &= ~(1 << bit); + status &= ~KEMPLD_GPIO_MASK(bit); kempld_write8(pld, reg, status); } @@ -60,7 +60,7 @@ static int kempld_gpio_get_bit(struct kempld_device_data *pld, u8 reg, u8 bit) status = kempld_read8(pld, reg); kempld_release_mutex(pld); - return !!(status & (1 << bit)); + return !!(status & KEMPLD_GPIO_MASK(bit)); } static int kempld_gpio_get(struct gpio_chip *chip, unsigned offset) @@ -69,8 +69,7 @@ static int kempld_gpio_get(struct gpio_chip *chip, unsigned offset) = container_of(chip, struct kempld_gpio_data, chip); struct kempld_device_data *pld = gpio->pld; - return kempld_gpio_get_bit(pld, KEMPLD_GPIO_LVL_NUM(offset), - KEMPLD_GPIO_MASK(offset)); + return kempld_gpio_get_bit(pld, KEMPLD_GPIO_LVL_NUM(offset), offset); } static void kempld_gpio_set(struct gpio_chip *chip, unsigned offset, int value) @@ -80,8 +79,7 @@ static void kempld_gpio_set(struct gpio_chip *chip, unsigned offset, int value) struct kempld_device_data *pld = gpio->pld; kempld_get_mutex(pld); - kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), - KEMPLD_GPIO_MASK(offset), value); + kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), offset, value); kempld_release_mutex(pld); } @@ -92,8 +90,7 @@ static int kempld_gpio_direction_input(struct gpio_chip *chip, unsigned offset) struct kempld_device_data *pld = gpio->pld; kempld_get_mutex(pld); - kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), - KEMPLD_GPIO_MASK(offset), 0); + kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), offset, 0); kempld_release_mutex(pld); return 0; @@ -107,10 +104,8 @@ static int kempld_gpio_direction_output(struct gpio_chip *chip, unsigned offset, struct kempld_device_data *pld = gpio->pld; kempld_get_mutex(pld); - kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), - KEMPLD_GPIO_MASK(offset), value); - kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), - KEMPLD_GPIO_MASK(offset), 1); + kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), offset, value); + kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), offset, 1); kempld_release_mutex(pld); return 0; @@ -122,8 +117,7 @@ static int kempld_gpio_get_direction(struct gpio_chip *chip, unsigned offset) = container_of(chip, struct kempld_gpio_data, chip); struct kempld_device_data *pld = gpio->pld; - return kempld_gpio_get_bit(pld, KEMPLD_GPIO_DIR_NUM(offset), - KEMPLD_GPIO_MASK(offset)); + return kempld_gpio_get_bit(pld, KEMPLD_GPIO_DIR_NUM(offset), offset); } static int kempld_gpio_pincount(struct kempld_device_data *pld) -- 2.41.0