diff options
Diffstat (limited to 'recipes/linux/linux-2.6.27/ts72xx/0003-Debounce-IRQ.patch')
| -rw-r--r-- | recipes/linux/linux-2.6.27/ts72xx/0003-Debounce-IRQ.patch | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.27/ts72xx/0003-Debounce-IRQ.patch b/recipes/linux/linux-2.6.27/ts72xx/0003-Debounce-IRQ.patch new file mode 100644 index 0000000000..21410ab7f0 --- /dev/null +++ b/recipes/linux/linux-2.6.27/ts72xx/0003-Debounce-IRQ.patch @@ -0,0 +1,97 @@ +From 51bba77f0953f87a88a8fce9fb8827bdba57a2c5 Mon Sep 17 00:00:00 2001 +From: Matthieu Crapet <mcrapet@gmail.com> +Date: Sun, 4 Jan 2009 00:42:43 +0100 +Subject: [PATCH] Debounce IRQ +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf-8 +Content-Transfer-Encoding: 8bit + +Signed-off-by: Petr Štetiar <ynezz@true.cz> +--- + arch/arm/mach-ep93xx/core.c | 18 ++++++++++++++++++ + arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h | 3 +++ + arch/arm/mach-ep93xx/include/mach/gpio.h | 2 ++ + 3 files changed, 23 insertions(+), 0 deletions(-) + +diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c +index d6967de..1928c93 100644 +--- a/arch/arm/mach-ep93xx/core.c ++++ b/arch/arm/mach-ep93xx/core.c +@@ -152,12 +152,14 @@ static unsigned char gpio_int_unmasked[3]; + static unsigned char gpio_int_enabled[3]; + static unsigned char gpio_int_type1[3]; + static unsigned char gpio_int_type2[3]; ++static unsigned char gpio_int_debouce[3]; + + /* Port ordering is: A B F */ + static const u8 int_type1_register_offset[3] = { 0x90, 0xac, 0x4c }; + static const u8 int_type2_register_offset[3] = { 0x94, 0xb0, 0x50 }; + static const u8 eoi_register_offset[3] = { 0x98, 0xb4, 0x54 }; + static const u8 int_en_register_offset[3] = { 0x9c, 0xb8, 0x58 }; ++static const u8 int_debounce_register_offset[3] = { 0xa8, 0xc4, 0x64 }; + + void ep93xx_gpio_update_int_params(unsigned port) + { +@@ -180,6 +182,22 @@ void ep93xx_gpio_int_mask(unsigned line) + gpio_int_unmasked[line >> 3] &= ~(1 << (line & 7)); + } + ++void ep93xx_gpio_int_debounce(unsigned int irq, int enable) ++{ ++ int line = irq_to_gpio(irq); ++ int port = line >> 3; ++ int port_mask = 1 << (line & 7); ++ ++ if (enable) ++ gpio_int_debouce[port] |= port_mask; ++ else ++ gpio_int_debouce[port] &= ~port_mask; ++ ++ __raw_writeb(gpio_int_debouce[port], ++ EP93XX_GPIO_REG(int_debounce_register_offset[port])); ++} ++EXPORT_SYMBOL(ep93xx_gpio_int_debounce); ++ + /************************************************************************* + * EP93xx IRQ handling + *************************************************************************/ +diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h +index 9f4458c..5582138 100644 +--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h ++++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h +@@ -78,16 +78,19 @@ + #define EP93XX_GPIO_F_INT_ACK EP93XX_GPIO_REG(0x54) + #define EP93XX_GPIO_F_INT_ENABLE EP93XX_GPIO_REG(0x58) + #define EP93XX_GPIO_F_INT_STATUS EP93XX_GPIO_REG(0x5c) ++#define EP93XX_GPIO_F_INT_DEBOUNCE EP93XX_GPIO_REG(0x64) + #define EP93XX_GPIO_A_INT_TYPE1 EP93XX_GPIO_REG(0x90) + #define EP93XX_GPIO_A_INT_TYPE2 EP93XX_GPIO_REG(0x94) + #define EP93XX_GPIO_A_INT_ACK EP93XX_GPIO_REG(0x98) + #define EP93XX_GPIO_A_INT_ENABLE EP93XX_GPIO_REG(0x9c) + #define EP93XX_GPIO_A_INT_STATUS EP93XX_GPIO_REG(0xa0) ++#define EP93XX_GPIO_A_INT_DEBOUNCE EP93XX_GPIO_REG(0xa8) + #define EP93XX_GPIO_B_INT_TYPE1 EP93XX_GPIO_REG(0xac) + #define EP93XX_GPIO_B_INT_TYPE2 EP93XX_GPIO_REG(0xb0) + #define EP93XX_GPIO_B_INT_ACK EP93XX_GPIO_REG(0xb4) + #define EP93XX_GPIO_B_INT_ENABLE EP93XX_GPIO_REG(0xb8) + #define EP93XX_GPIO_B_INT_STATUS EP93XX_GPIO_REG(0xbc) ++#define EP93XX_GPIO_B_INT_DEBOUNCE EP93XX_GPIO_REG(0xc4) + + #define EP93XX_AAC_BASE (EP93XX_APB_VIRT_BASE + 0x00080000) + +diff --git a/arch/arm/mach-ep93xx/include/mach/gpio.h b/arch/arm/mach-ep93xx/include/mach/gpio.h +index f702041..0a1498a 100644 +--- a/arch/arm/mach-ep93xx/include/mach/gpio.h ++++ b/arch/arm/mach-ep93xx/include/mach/gpio.h +@@ -99,6 +99,8 @@ + /* maximum value for irq capable line identifiers */ + #define EP93XX_GPIO_LINE_MAX_IRQ EP93XX_GPIO_LINE_F(7) + ++extern void ep93xx_gpio_int_debounce(unsigned int irq, int enable); ++ + /* new generic GPIO API - see Documentation/gpio.txt */ + + #include <asm-generic/gpio.h> +-- +1.6.0.4 + |