From 5d4292a524d8908060b077f4d80c106cb288f2e7 Mon Sep 17 00:00:00 2001 From: Vaibhav Hiremath Date: Sat, 13 Feb 2010 11:47:57 +0000 Subject: [PATCH] AM3517: Enable I2C-GPIO Expander driver support for AM3517EVM Add platform hook-up interface to support I2C based GPIo expander (TCA6416). There are 3 instances of I2C Expander on AM3517EVM, - One is over I2C-2 mounted on Base board - Two are over I2C3 mounted on UI Card Signed-off-by: Vaibhav Hiremath Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-am3517evm.c | 40 +++++++++++++++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c index fe2446d..e6b8967 100644 --- a/arch/arm/mach-omap2/board-am3517evm.c +++ b/arch/arm/mach-omap2/board-am3517evm.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -71,11 +72,46 @@ static void __init am3517_evm_rtc_init(void) am3517evm_i2c_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ); } +/* + * I2C GPIO Expander - TCA6416 + */ + +/* Mounted on Base-Board */ +static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = { + .gpio_base = OMAP_MAX_GPIO_LINES, +}; +static struct i2c_board_info __initdata am3517evm_tca6516_info_0[] = { + { + I2C_BOARD_INFO("tca6416", 0x21), + .platform_data = &am3517evm_gpio_expander_info_0, + }, +}; + +/* Mounted on UI Card */ +static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = { + .gpio_base = OMAP_MAX_GPIO_LINES + 16, +}; +static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = { + .gpio_base = OMAP_MAX_GPIO_LINES + 32, +}; +static struct i2c_board_info __initdata am3517evm_ui_tca6516_info[] = { + { + I2C_BOARD_INFO("tca6416", 0x20), + .platform_data = &am3517evm_ui_gpio_expander_info_1, + }, + { + I2C_BOARD_INFO("tca6416", 0x21), + .platform_data = &am3517evm_ui_gpio_expander_info_2, + }, +}; + static int __init am3517_evm_i2c_init(void) { omap_register_i2c_bus(1, 400, NULL, 0); - omap_register_i2c_bus(2, 400, NULL, 0); - omap_register_i2c_bus(3, 400, NULL, 0); + omap_register_i2c_bus(2, 400, am3517evm_tca6516_info_0, + ARRAY_SIZE(am3517evm_tca6516_info_0)); + omap_register_i2c_bus(3, 400, am3517evm_ui_tca6516_info, + ARRAY_SIZE(am3517evm_ui_tca6516_info)); return 0; } -- 2.7.4