[deliverable/linux.git] / arch / arm / mach-omap2 / board-zoom-display.c

/*
 * Copyright (C) 2010 Texas Instruments Inc.
 *
 * Modified from mach-omap2/board-zoom-peripherals.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/i2c/twl.h>
#include <linux/spi/spi.h>
#include <plat/mcspi.h>
#include <video/omapdss.h>

#define LCD_PANEL_RESET_GPIO_PROD	96
#define LCD_PANEL_RESET_GPIO_PILOT	55
#define LCD_PANEL_QVGA_GPIO		56

static struct gpio zoom_lcd_gpios[] __initdata = {
	{ -EINVAL,		GPIOF_OUT_INIT_HIGH, "lcd reset" },
	{ LCD_PANEL_QVGA_GPIO,	GPIOF_OUT_INIT_HIGH, "lcd qvga"	 },
};

static void __init zoom_lcd_panel_init(void)
{
	zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
			LCD_PANEL_RESET_GPIO_PROD :
			LCD_PANEL_RESET_GPIO_PILOT;

	if (gpio_request_array(zoom_lcd_gpios, ARRAY_SIZE(zoom_lcd_gpios)))
		pr_err("%s: Failed to get LCD GPIOs.\n", __func__);
}

static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev)
{
	return 0;
}

static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev)
{
}

/*
 * PWMA/B register offsets (TWL4030_MODULE_PWMA)
 */
#define TWL_INTBR_PMBR1	0xD
#define TWL_INTBR_GPBR1	0xC
#define TWL_LED_PWMON	0x0
#define TWL_LED_PWMOFF	0x1

static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level)
{
	unsigned char c;
	u8 mux_pwm, enb_pwm;

	if (level > 100)
		return -1;

	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1);
	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1);

	if (level == 0) {
		/* disable pwm1 output and clock */
		enb_pwm = enb_pwm & 0xF5;
		/* change pwm1 pin to gpio pin */
		mux_pwm = mux_pwm & 0xCF;
		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
					enb_pwm, TWL_INTBR_GPBR1);
		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
					mux_pwm, TWL_INTBR_PMBR1);
		return 0;
	}

	if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) {
		/* change gpio pin to pwm1 pin */
		mux_pwm = mux_pwm | 0x30;
		/* enable pwm1 output and clock*/
		enb_pwm = enb_pwm | 0x0A;
		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
					mux_pwm, TWL_INTBR_PMBR1);
		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
					enb_pwm, TWL_INTBR_GPBR1);
	}

	c = ((50 * (100 - level)) / 100) + 1;
	twl_i2c_write_u8(TWL4030_MODULE_PWM1, 0x7F, TWL_LED_PWMOFF);
	twl_i2c_write_u8(TWL4030_MODULE_PWM1, c, TWL_LED_PWMON);

	return 0;
}

static struct omap_dss_device zoom_lcd_device = {
	.name			= "lcd",
	.driver_name		= "NEC_8048_panel",
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.phy.dpi.data_lines	= 24,
	.platform_enable	= zoom_panel_enable_lcd,
	.platform_disable	= zoom_panel_disable_lcd,
	.max_backlight_level	= 100,
	.set_backlight		= zoom_set_bl_intensity,
};

static struct omap_dss_device *zoom_dss_devices[] = {
	&zoom_lcd_device,
};

static struct omap_dss_board_info zoom_dss_data = {
	.num_devices		= ARRAY_SIZE(zoom_dss_devices),
	.devices		= zoom_dss_devices,
	.default_device		= &zoom_lcd_device,
};

static struct omap2_mcspi_device_config dss_lcd_mcspi_config = {
	.turbo_mode		= 1,
	.single_channel	= 1,  /* 0: slave, 1: master */
};

static struct spi_board_info nec_8048_spi_board_info[] __initdata = {
	[0] = {
		.modalias		= "nec_8048_spi",
		.bus_num		= 1,
		.chip_select		= 2,
		.max_speed_hz		= 375000,
		.controller_data	= &dss_lcd_mcspi_config,
	},
};

void __init zoom_display_init(void)
{
	omap_display_init(&zoom_dss_data);
	spi_register_board_info(nec_8048_spi_board_info,
				ARRAY_SIZE(nec_8048_spi_board_info));
	zoom_lcd_panel_init();
}
Commit	Line	Data
a6490335 K	1	/*
	2	* Copyright (C) 2010 Texas Instruments Inc.
	3	*
	4	* Modified from mach-omap2/board-zoom-peripherals.c
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/init.h>
	13	#include <linux/platform_device.h>
	14	#include <linux/gpio.h>
	15	#include <linux/i2c/twl.h>
	16	#include <linux/spi/spi.h>
	17	#include <plat/mcspi.h>
a0b38cc4	18	#include <video/omapdss.h>
a6490335 K	19
	20	#define LCD_PANEL_RESET_GPIO_PROD 96
	21	#define LCD_PANEL_RESET_GPIO_PILOT 55
	22	#define LCD_PANEL_QVGA_GPIO 56
	23
bc593f5d IG	24	static struct gpio zoom_lcd_gpios[] __initdata = {
	25	{ -EINVAL, GPIOF_OUT_INIT_HIGH, "lcd reset" },
	26	{ LCD_PANEL_QVGA_GPIO, GPIOF_OUT_INIT_HIGH, "lcd qvga" },
	27	};
	28
89c4705e	29	static void __init zoom_lcd_panel_init(void)
a6490335	30	{
bc593f5d	31	zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
a6490335 K	32	LCD_PANEL_RESET_GPIO_PROD :
	33	LCD_PANEL_RESET_GPIO_PILOT;
	34
bc593f5d IG	35	if (gpio_request_array(zoom_lcd_gpios, ARRAY_SIZE(zoom_lcd_gpios)))
bc593f5d IG	36	pr_err("%s: Failed to get LCD GPIOs.\n", __func__);
a6490335 K	37	}
	38
	39	static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev)
	40	{
	41	return 0;
	42	}
	43
	44	static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev)
	45	{
	46	}
	47
	48	/*
	49	* PWMA/B register offsets (TWL4030_MODULE_PWMA)
	50	*/
	51	#define TWL_INTBR_PMBR1 0xD
	52	#define TWL_INTBR_GPBR1 0xC
	53	#define TWL_LED_PWMON 0x0
	54	#define TWL_LED_PWMOFF 0x1
	55
	56	static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level)
	57	{
	58	unsigned char c;
	59	u8 mux_pwm, enb_pwm;
	60
	61	if (level > 100)
	62	return -1;
	63
	64	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1);
	65	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1);
	66
	67	if (level == 0) {
	68	/* disable pwm1 output and clock */
	69	enb_pwm = enb_pwm & 0xF5;
	70	/* change pwm1 pin to gpio pin */
	71	mux_pwm = mux_pwm & 0xCF;
	72	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	73	enb_pwm, TWL_INTBR_GPBR1);
	74	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	75	mux_pwm, TWL_INTBR_PMBR1);
	76	return 0;
	77	}
	78
	79	if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) {
	80	/* change gpio pin to pwm1 pin */
	81	mux_pwm = mux_pwm \| 0x30;
	82	/* enable pwm1 output and clock*/
	83	enb_pwm = enb_pwm \| 0x0A;
	84	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	85	mux_pwm, TWL_INTBR_PMBR1);
	86	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	87	enb_pwm, TWL_INTBR_GPBR1);
	88	}
	89
	90	c = ((50 * (100 - level)) / 100) + 1;
	91	twl_i2c_write_u8(TWL4030_MODULE_PWM1, 0x7F, TWL_LED_PWMOFF);
	92	twl_i2c_write_u8(TWL4030_MODULE_PWM1, c, TWL_LED_PWMON);
	93
	94	return 0;
	95	}
	96
	97	static struct omap_dss_device zoom_lcd_device = {
	98	.name = "lcd",
	99	.driver_name = "NEC_8048_panel",
	100	.type = OMAP_DISPLAY_TYPE_DPI,
101	.phy.dpi.data_lines = 24,
102	.platform_enable = zoom_panel_enable_lcd,
103	.platform_disable = zoom_panel_disable_lcd,
104	.max_backlight_level = 100,
105	.set_backlight = zoom_set_bl_intensity,
106	};
107
108	static struct omap_dss_device *zoom_dss_devices[] = {
109	&zoom_lcd_device,
110	};
111
112	static struct omap_dss_board_info zoom_dss_data = {
113	.num_devices = ARRAY_SIZE(zoom_dss_devices),
114	.devices = zoom_dss_devices,
115	.default_device = &zoom_lcd_device,
116	};
117
a6490335 K	118	static struct omap2_mcspi_device_config dss_lcd_mcspi_config = {
	119	.turbo_mode = 1,
	120	.single_channel = 1, /* 0: slave, 1: master */
	121	};
	122
	123	static struct spi_board_info nec_8048_spi_board_info[] __initdata = {
	124	[0] = {
	125	.modalias = "nec_8048_spi",
	126	.bus_num = 1,
	127	.chip_select = 2,
	128	.max_speed_hz = 375000,
	129	.controller_data = &dss_lcd_mcspi_config,
	130	},
	131	};
	132
a6490335 K	133	void __init zoom_display_init(void)
a6490335 K	134	{
d5e13227	135	omap_display_init(&zoom_dss_data);
a6490335 K	136	spi_register_board_info(nec_8048_spi_board_info,
	137	ARRAY_SIZE(nec_8048_spi_board_info));
	138	zoom_lcd_panel_init();
	139	}
	140