linux: add ts72xx support to 2.6.22.6 and 2.6.22+2.6.23-rc5 (see version policy for the renaming reason), closes #2918

1 files changed, 87 insertions, 0 deletions

diff --git a/packages/linux/linux-2.6.22.6/ts72xx/ep93xx-gpio-interrupt-debounce.diff b/packages/linux/linux-2.6.22.6/ts72xx/ep93xx-gpio-interrupt-debounce.diff
new file mode 100644
index 0000000000..27146c30f1
--- /dev/null
+++ b/packages/linux/linux-2.6.22.6/ts72xx/ep93xx-gpio-interrupt-debounce.diff
@@ -0,0 +1,87 @@
+
+Implement GPIO interrupt debouncing on ep93xx.
+
+Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
+
+Index: linux-2.6.22/arch/arm/mach-ep93xx/core.c
+===================================================================
+--- linux-2.6.22.orig/arch/arm/mach-ep93xx/core.c
++++ linux-2.6.22/arch/arm/mach-ep93xx/core.c
+@@ -154,6 +154,7 @@ struct sys_timer ep93xx_timer = {
+  *************************************************************************/
+ static unsigned char gpio_int_unmasked[3];
+ static unsigned char gpio_int_enabled[3];
++static unsigned char gpio_int_debounce[3];
+ static unsigned char gpio_int_type1[3];
+ static unsigned char gpio_int_type2[3];
+ 
+@@ -161,16 +162,19 @@ static void update_gpio_int_params(int a
+ {
+ 	if (abf == 0) {
+ 		__raw_writeb(0, EP93XX_GPIO_A_INT_ENABLE);
++		__raw_writeb(gpio_int_debounce[0], EP93XX_GPIO_A_INT_DEBOUNCE);
+ 		__raw_writeb(gpio_int_type2[0], EP93XX_GPIO_A_INT_TYPE2);
+ 		__raw_writeb(gpio_int_type1[0], EP93XX_GPIO_A_INT_TYPE1);
+ 		__raw_writeb(gpio_int_unmasked[0] & gpio_int_enabled[0], EP93XX_GPIO_A_INT_ENABLE);
+ 	} else if (abf == 1) {
+ 		__raw_writeb(0, EP93XX_GPIO_B_INT_ENABLE);
++		__raw_writeb(gpio_int_debounce[1], EP93XX_GPIO_B_INT_DEBOUNCE);
+ 		__raw_writeb(gpio_int_type2[1], EP93XX_GPIO_B_INT_TYPE2);
+ 		__raw_writeb(gpio_int_type1[1], EP93XX_GPIO_B_INT_TYPE1);
+ 		__raw_writeb(gpio_int_unmasked[1] & gpio_int_enabled[1], EP93XX_GPIO_B_INT_ENABLE);
+ 	} else if (abf == 2) {
+ 		__raw_writeb(0, EP93XX_GPIO_F_INT_ENABLE);
++		__raw_writeb(gpio_int_debounce[2], EP93XX_GPIO_F_INT_DEBOUNCE);
+ 		__raw_writeb(gpio_int_type2[2], EP93XX_GPIO_F_INT_TYPE2);
+ 		__raw_writeb(gpio_int_type1[2], EP93XX_GPIO_F_INT_TYPE1);
+ 		__raw_writeb(gpio_int_unmasked[2] & gpio_int_enabled[2], EP93XX_GPIO_F_INT_ENABLE);
+@@ -361,6 +365,13 @@ static int ep93xx_gpio_irq_type(unsigned
+ 	} else {
+ 		gpio_int_enabled[port] &= ~(1 << line);
+ 	}
++
++	if (type & IRQ_TYPE_DEBOUNCE) {
++		gpio_int_debounce[port] |= 1 << line;
++	} else {
++		gpio_int_debounce[port] &= ~(1 << line);
++	}
++
+ 	update_gpio_int_params(port);
+ 
+ 	return 0;
+Index: linux-2.6.22/include/asm-arm/arch-ep93xx/ep93xx-regs.h
+===================================================================
+--- linux-2.6.22.orig/include/asm-arm/arch-ep93xx/ep93xx-regs.h
++++ linux-2.6.22/include/asm-arm/arch-ep93xx/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)
+ 
+Index: linux-2.6.22/include/linux/irq.h
+===================================================================
+--- linux-2.6.22.orig/include/linux/irq.h
++++ linux-2.6.22/include/linux/irq.h
+@@ -44,6 +44,7 @@ typedef	void fastcall (*irq_flow_handler
+ #define IRQ_TYPE_LEVEL_LOW	0x00000008	/* Level low type */
+ #define IRQ_TYPE_SENSE_MASK	0x0000000f	/* Mask of the above */
+ #define IRQ_TYPE_PROBE		0x00000010	/* Probing in progress */
++#define IRQ_TYPE_DEBOUNCE	0x00000020	/* Enable HW debounce */
+ 
+ /* Internal flags */
+ #define IRQ_INPROGRESS		0x00000100	/* IRQ handler active - do not enter! */