diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.2/0014-MIPS-lantiq-fix-pull-gpio-up-resistors-usage.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.2/0014-MIPS-lantiq-fix-pull-gpio-up-resistors-usage.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.2/0014-MIPS-lantiq-fix-pull-gpio-up-resistors-usage.patch b/target/linux/lantiq/patches-3.2/0014-MIPS-lantiq-fix-pull-gpio-up-resistors-usage.patch new file mode 100644 index 0000000..40b8667 --- /dev/null +++ b/target/linux/lantiq/patches-3.2/0014-MIPS-lantiq-fix-pull-gpio-up-resistors-usage.patch @@ -0,0 +1,48 @@ +From e97f45d255f4a223d38e2f39c1ddf7a3e0766527 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Thu, 27 Oct 2011 20:06:30 +0200 +Subject: [PATCH 14/70] MIPS: lantiq: fix pull gpio up resistors usage + +The register that enables a gpios internal pullups was not used. This patch +makes sure the pullups are activated correctly. + +Signed-off-by: Matti Laakso <malaakso@elisanet.fi> +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + arch/mips/lantiq/xway/gpio.c | 6 ++++++ + 1 files changed, 6 insertions(+), 0 deletions(-) + +diff --git a/arch/mips/lantiq/xway/gpio.c b/arch/mips/lantiq/xway/gpio.c +index f204f6c..14ff7c7 100644 +--- a/arch/mips/lantiq/xway/gpio.c ++++ b/arch/mips/lantiq/xway/gpio.c +@@ -21,6 +21,8 @@ + #define LTQ_GPIO_ALTSEL0 0x0C + #define LTQ_GPIO_ALTSEL1 0x10 + #define LTQ_GPIO_OD 0x14 ++#define LTQ_GPIO_PUDSEL 0x1C ++#define LTQ_GPIO_PUDEN 0x20 + + #define PINS_PER_PORT 16 + #define MAX_PORTS 3 +@@ -106,6 +108,8 @@ static int ltq_gpio_direction_input(struct gpio_chip *chip, unsigned int offset) + + ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_OD, offset); + ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_DIR, offset); ++ ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_PUDSEL, offset); ++ ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_PUDEN, offset); + + return 0; + } +@@ -117,6 +121,8 @@ static int ltq_gpio_direction_output(struct gpio_chip *chip, + + ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_OD, offset); + ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_DIR, offset); ++ ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_PUDSEL, offset); ++ ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_PUDEN, offset); + ltq_gpio_set(chip, offset, value); + + return 0; +-- +1.7.7.1 + |