From 91d139cf3630eff73f161494ee0c596472c11fef Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Fri, 8 Oct 2010 10:22:51 -0700 Subject: [PATCH] omap3: Add i2c eeprom driver to read EDID on IGEP v2 Add i2c eeprom driver to access monitor EDID binary information from user space, something that is required by 'decode-edid' and 'parse-edid'. Signed-off-by: Enric Balletbo i Serra Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-igep0020.c | 33 ++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 9 deletions(-) diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c index 22f73b4e0b438..cfd67bf0acd99 100644 --- a/arch/arm/mach-omap2/board-igep0020.c +++ b/arch/arm/mach-omap2/board-igep0020.c @@ -542,7 +542,7 @@ static struct twl4030_platform_data igep2_twldata = { }; -static struct i2c_board_info __initdata igep2_i2c_boardinfo[] = { +static struct i2c_board_info __initdata igep2_i2c1_boardinfo[] = { { I2C_BOARD_INFO("twl4030", 0x48), .flags = I2C_CLIENT_WAKE, @@ -551,14 +551,29 @@ static struct i2c_board_info __initdata igep2_i2c_boardinfo[] = { }, }; -static int __init igep2_i2c_init(void) +static struct i2c_board_info __initdata igep2_i2c3_boardinfo[] = { + { + I2C_BOARD_INFO("eeprom", 0x50), + }, +}; + +static void __init igep2_i2c_init(void) { - omap_register_i2c_bus(1, 2600, igep2_i2c_boardinfo, - ARRAY_SIZE(igep2_i2c_boardinfo)); - /* Bus 3 is attached to the DVI port where devices like the pico DLP - * projector don't work reliably with 400kHz */ - omap_register_i2c_bus(3, 100, NULL, 0); - return 0; + int ret; + + ret = omap_register_i2c_bus(1, 2600, igep2_i2c1_boardinfo, + ARRAY_SIZE(igep2_i2c1_boardinfo)); + if (ret) + pr_warning("IGEP2: Could not register I2C1 bus (%d)\n", ret); + + /* + * Bus 3 is attached to the DVI port where devices like the pico DLP + * projector don't work reliably with 400kHz + */ + ret = omap_register_i2c_bus(3, 100, igep2_i2c3_boardinfo, + ARRAY_SIZE(igep2_i2c3_boardinfo)); + if (ret) + pr_warning("IGEP2: Could not register I2C3 bus (%d)\n", ret); } static struct omap_musb_board_data musb_board_data = { @@ -636,7 +651,7 @@ static void __init igep2_init(void) /* Get IGEP2 hardware revision */ igep2_get_revision(); - + /* Register I2C busses and drivers */ igep2_i2c_init(); platform_add_devices(igep2_devices, ARRAY_SIZE(igep2_devices)); omap_serial_init();