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ARM: OMAP1: osk5912: Mistral eeprom support

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List the 4 Kbit I2C EEPROM included on the Mistral board.

Also add a comment about the hardware workaround needed to
properly support the WAKE button.  More info at

  http://elinux.org/OSK_Mistral_wakeup_button_mod

Still no support for the (optional) camera sensor.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
David Brownell 2008-12-10 17:35:53 -08:00 committed by Tony Lindgren
parent 944e1bffb6
commit 2430c62e4b
1 changed files with 27 additions and 2 deletions
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29
arch/arm/mach-omap1/board-osk.c
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@ -260,7 +260,6 @@ static struct i2c_board_info __initdata osk_i2c_board_info[] = {
},
/* TODO when driver support is ready:
* - aic23 audio chip at 0x1a
* - on Mistral, 24c04 eeprom at 0x50
* - optionally on Mistral, ov9640 camera sensor at 0x30
*/
};
@ -337,11 +336,28 @@ static struct omap_board_config_kernel osk_config[] __initdata = {
#ifdef CONFIG_OMAP_OSK_MISTRAL
#include <linux/input.h>
#include <linux/i2c/at24.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <mach/keypad.h>
static struct at24_platform_data at24c04 = {
.byte_len = SZ_4K / 8,
.page_size = 16,
};
static struct i2c_board_info __initdata mistral_i2c_board_info[] = {
{
/* NOTE: powered from LCD supply */
I2C_BOARD_INFO("24c04", 0x50),
.platform_data = &at24c04,
},
/* TODO when driver support is ready:
* - optionally ov9640 camera sensor at 0x30
*/
};
static const int osk_keymap[] = {
/* KEY(col, row, code) */
KEY(0, 0, KEY_F1), /* SW4 */
@ -488,7 +504,13 @@ static void __init osk_mistral_init(void)
spi_register_board_info(mistral_boardinfo,
ARRAY_SIZE(mistral_boardinfo));
/* the sideways button (SW1) is for use as a "wakeup" button */
/* the sideways button (SW1) is for use as a "wakeup" button
*
* NOTE: The Mistral board has the wakeup button (SW1) wired
* to the LCD 3.3V rail, which is powered down during suspend.
* To allow this button to wake up the omap, work around this
* HW bug by rewiring SW1 to use the main 3.3V rail.
*/
omap_cfg_reg(N15_1610_MPUIO2);
if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) {
int ret = 0;
@ -521,6 +543,9 @@ static void __init osk_mistral_init(void)
if (gpio_request(2, "lcd_pwr") == 0)
gpio_direction_output(2, 1);
i2c_register_board_info(1, mistral_i2c_board_info,
ARRAY_SIZE(mistral_i2c_board_info));
platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
}
#else