add support for the GPIO expander used on the Cambria based on patches from Chris

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14244 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 107 insertions, 0 deletions

diff --git a/target/linux/ixp4xx/patches-2.6.28/193-cambria_pld_gpio.patch b/target/linux/ixp4xx/patches-2.6.28/193-cambria_pld_gpio.patch
new file mode 100644
index 0000000000..299630f171
--- /dev/null
+++ b/target/linux/ixp4xx/patches-2.6.28/193-cambria_pld_gpio.patch
@@ -0,0 +1,107 @@
+--- a/arch/arm/mach-ixp4xx/cambria-setup.c
++++ b/arch/arm/mach-ixp4xx/cambria-setup.c
+@@ -12,11 +12,14 @@
+  */
+ 
+ #include <linux/device.h>
++#include <linux/gpio_buttons.h>
+ #include <linux/i2c.h>
+ #include <linux/i2c-gpio.h>
+ #include <linux/i2c/at24.h>
++#include <linux/i2c/gw_i2c_pld.h>
+ #include <linux/if_ether.h>
+ #include <linux/init.h>
++#include <linux/input.h>
+ #include <linux/kernel.h>
+ #include <linux/leds.h>
+ #include <linux/memory.h>
+@@ -323,6 +326,39 @@ static struct platform_device cambria_us
+ 	},
+ };
+ 
++static struct gw_i2c_pld_platform_data gw_i2c_pld_data0 = {
++	.gpio_base	= 16,
++	.nr_gpio	= 8,
++};
++
++static struct gw_i2c_pld_platform_data gw_i2c_pld_data1 = {
++	.gpio_base	= 24,
++	.nr_gpio	= 2,
++};
++
++
++static struct gpio_button cambria_gpio_buttons[] = {
++	{
++		.desc		= "user",
++		.type		= EV_KEY,
++		.code		= BTN_0,
++		.threshold	= 2,
++		.gpio		= 25,
++	}
++};
++
++static struct gpio_buttons_platform_data cambria_gpio_buttons_data = {
++	.poll_interval	= 500,
++	.nbuttons	= 1,
++	.buttons	= cambria_gpio_buttons,	
++};
++
++static struct platform_device cambria_gpio_buttons_device = {
++	.name			= "gpio-buttons",
++	.id			= -1,
++	.dev.platform_data	= &cambria_gpio_buttons_data,
++};
++
+ static struct platform_device *cambria_devices[] __initdata = {
+ 	&cambria_i2c_gpio,
+ 	&cambria_flash,
+@@ -331,6 +367,11 @@ static struct platform_device *cambria_d
+ 
+ static void __init cambria_gw23xx_setup(void)
+ {
++	cambria_gpio_resources[0].start = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) |\
++																		(1 << 5) | (1 << 8) | (1 << 9) | (1 << 12);
++	cambria_gpio_resources[0].end = cambria_gpio_resources[0].start;
++
++	platform_device_register(&cambria_gpio);
+ 	platform_device_register(&cambria_npec_device);
+ 	platform_device_register(&cambria_npea_device);
+ }
+@@ -377,7 +418,8 @@ static void __init cambria_gw2358_setup(
+ 	cambria_optional_uart_data[1].membase	= (void __iomem *)ioremap(0x53F80000, 0x0fff);
+ 	cambria_optional_uart_data[1].irq		= IRQ_IXP4XX_GPIO4;
+ 
+-	cambria_gpio_resources[0].start = (1 << 14);
++	cambria_gpio_resources[0].start = (1 << 14) | (1 << 16) | (1 << 17) | (1 << 18) |\
++																		(1 << 19) | (1 << 20) | (1 << 24) | (1 << 25);
+ 	cambria_gpio_resources[0].end = cambria_gpio_resources[0].start;
+ 
+ 	platform_device_register(&cambria_gpio);
+@@ -391,7 +433,12 @@ static void __init cambria_gw2358_setup(
+ 
+ 	platform_device_register(&cambria_pata);
+ 
++	cambria_gpio_leds[0].gpio = 24;
++	platform_device_register(&cambria_gpio_leds_device);
++
+ 	platform_device_register(&cambria_latch_leds_device);
++
++	platform_device_register(&cambria_gpio_buttons_device);
+ }
+ 
+ static struct cambria_board_info cambria_boards[] __initdata = {
+@@ -460,6 +507,14 @@ static struct i2c_board_info __initdata 
+ 		I2C_BOARD_INFO("24c08", 0x51),
+ 		.platform_data	= &cambria_eeprom_info
+ 	},
++	{
++		I2C_BOARD_INFO("gw_i2c_pld", 0x56),
++		.platform_data	= &gw_i2c_pld_data0,
++	},
++	{
++		I2C_BOARD_INFO("gw_i2c_pld", 0x57),
++		.platform_data	= &gw_i2c_pld_data1,
++	},
+ };
+ 
+ static void __init cambria_init(void)