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/*
* arch/arm/mach-omap2/board-blaze-panel.c
*
* Copyright (C) 2011 Texas Instruments
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/leds-omap4430sdp-display.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl.h>
#include <plat/i2c.h>
#include "board-blaze.h"
#include "mux.h"
#define DP_4430_GPIO_59 59
#define LED_SEC_DISP_GPIO 27
#define DSI2_GPIO_59 59
#define LED_PWM2ON 0x03
#define LED_PWM2OFF 0x04
#define LED_TOGGLE3 0x92
static void blaze_init_display_led(void)
{
twl_i2c_write_u8(TWL_MODULE_PWM, 0xFF, LED_PWM2ON);
twl_i2c_write_u8(TWL_MODULE_PWM, 0x7F, LED_PWM2OFF);
twl_i2c_write_u8(TWL6030_MODULE_ID1, 0x30, LED_TOGGLE3);
}
static void blaze_set_primary_brightness(u8 brightness)
{
if (brightness > 1) {
if (brightness == 255)
brightness = 0x7f;
else
brightness = (~(brightness/2)) & 0x7f;
twl_i2c_write_u8(TWL6030_MODULE_ID1, 0x30, LED_TOGGLE3);
twl_i2c_write_u8(TWL_MODULE_PWM, brightness, LED_PWM2ON);
} else if (brightness <= 1) {
twl_i2c_write_u8(TWL6030_MODULE_ID1, 0x08, LED_TOGGLE3);
twl_i2c_write_u8(TWL6030_MODULE_ID1, 0x38, LED_TOGGLE3);
}
}
static void blaze_set_secondary_brightness(u8 brightness)
{
if (brightness > 0)
brightness = 1;
gpio_set_value(LED_SEC_DISP_GPIO, brightness);
}
static struct omap4430_sdp_disp_led_platform_data blaze_disp_led_data = {
.flags = LEDS_CTRL_AS_ONE_DISPLAY,
.display_led_init = blaze_init_display_led,
.primary_display_set = blaze_set_primary_brightness,
.secondary_display_set = blaze_set_secondary_brightness,
};
static void __init omap_disp_led_init(void)
{
/* Seconday backlight control */
gpio_request(DSI2_GPIO_59, "dsi2_bl_gpio");
gpio_direction_output(DSI2_GPIO_59, 0);
if (blaze_disp_led_data.flags & LEDS_CTRL_AS_ONE_DISPLAY) {
pr_info("%s: Configuring as one display LED\n", __func__);
gpio_set_value(DSI2_GPIO_59, 1);
}
gpio_request(LED_SEC_DISP_GPIO, "dsi1_bl_gpio");
gpio_direction_output(LED_SEC_DISP_GPIO, 1);
mdelay(120);
gpio_set_value(LED_SEC_DISP_GPIO, 0);
}
static struct platform_device blaze_disp_led = {
.name = "display_led",
.id = -1,
.dev = {
.platform_data = &blaze_disp_led_data,
},
};
int __init blaze_panel_init(void)
{
omap_disp_led_init();
platform_device_register(&blaze_disp_led);
return 0;
}
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