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openwrt-xburst/target/linux/lantiq/patches-3.2/0014-MIPS-lantiq-fix-pull-gpio-up-resistors-usage.patch
jogo f21c103e5a kernel: update linux 3.2 to 3.2.13 and refresh patches
Also remove a duplicate patch from lantiq (already in generic).

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31158 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-04-01 07:56:55 +00:00

44 lines
1.5 KiB
Diff

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(-)
--- 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(stru
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(str
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;