[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 <linux/platform_data/spi-omap2-mcspi.h>
#include <video/omapdss.h>
#include "board-zoom.h"

#include "soc.h"
#include "common.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)
{
}

/* Register offsets in TWL4030_MODULE_INTBR */
#define TWL_INTBR_PMBR1	0xD
#define TWL_INTBR_GPBR1	0xC

/* Register offsets in TWL_MODULE_PWM */
#define TWL_LED_PWMON	0x3
#define TWL_LED_PWMOFF	0x4

static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level)
{
#ifdef CONFIG_TWL4030_CORE
	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(TWL_MODULE_PWM, 0x7F, TWL_LED_PWMOFF);
	twl_i2c_write_u8(TWL_MODULE_PWM, c, TWL_LED_PWMON);
#else
	pr_warn("Backlight not enabled\n");
#endif

	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,
};

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>
2203747c	17	#include <linux/platform_data/spi-omap2-mcspi.h>
a0b38cc4	18	#include <video/omapdss.h>
8599e7c5	19	#include "board-zoom.h"
a6490335	20
e4c060db	21	#include "soc.h"
dbc04161	22	#include "common.h"
4b25408f	23
a6490335 K	24	#define LCD_PANEL_RESET_GPIO_PROD 96
	25	#define LCD_PANEL_RESET_GPIO_PILOT 55
	26	#define LCD_PANEL_QVGA_GPIO 56
	27
bc593f5d IG	28	static struct gpio zoom_lcd_gpios[] __initdata = {
	29	{ -EINVAL, GPIOF_OUT_INIT_HIGH, "lcd reset" },
	30	{ LCD_PANEL_QVGA_GPIO, GPIOF_OUT_INIT_HIGH, "lcd qvga" },
	31	};
	32
89c4705e	33	static void __init zoom_lcd_panel_init(void)
a6490335	34	{
bc593f5d	35	zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
a6490335 K	36	LCD_PANEL_RESET_GPIO_PROD :
	37	LCD_PANEL_RESET_GPIO_PILOT;
	38
bc593f5d IG	39	if (gpio_request_array(zoom_lcd_gpios, ARRAY_SIZE(zoom_lcd_gpios)))
bc593f5d IG	40	pr_err("%s: Failed to get LCD GPIOs.\n", __func__);
a6490335 K	41	}
	42
	43	static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev)
	44	{
	45	return 0;
	46	}
	47
	48	static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev)
	49	{
	50	}
	51
c6dc9646	52	/* Register offsets in TWL4030_MODULE_INTBR */
a6490335 K	53	#define TWL_INTBR_PMBR1 0xD
a6490335 K	54	#define TWL_INTBR_GPBR1 0xC
c6dc9646 PU	55
	56	/* Register offsets in TWL_MODULE_PWM */
	57	#define TWL_LED_PWMON 0x3
	58	#define TWL_LED_PWMOFF 0x4
a6490335 K	59
	60	static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level)
	61	{
38232f7b	62	#ifdef CONFIG_TWL4030_CORE
a6490335 K	63	unsigned char c;
	64	u8 mux_pwm, enb_pwm;
	65
	66	if (level > 100)
	67	return -1;
	68
	69	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1);
	70	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1);
	71
	72	if (level == 0) {
	73	/* disable pwm1 output and clock */
	74	enb_pwm = enb_pwm & 0xF5;
	75	/* change pwm1 pin to gpio pin */
	76	mux_pwm = mux_pwm & 0xCF;
	77	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	78	enb_pwm, TWL_INTBR_GPBR1);
	79	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	80	mux_pwm, TWL_INTBR_PMBR1);
	81	return 0;
	82	}
	83
	84	if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) {
	85	/* change gpio pin to pwm1 pin */
	86	mux_pwm = mux_pwm \| 0x30;
	87	/* enable pwm1 output and clock*/
	88	enb_pwm = enb_pwm \| 0x0A;
	89	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	90	mux_pwm, TWL_INTBR_PMBR1);
	91	twl_i2c_write_u8(TWL4030_MODULE_INTBR,
	92	enb_pwm, TWL_INTBR_GPBR1);
	93	}
	94
	95	c = ((50 * (100 - level)) / 100) + 1;
c6dc9646 PU	96	twl_i2c_write_u8(TWL_MODULE_PWM, 0x7F, TWL_LED_PWMOFF);
c6dc9646 PU	97	twl_i2c_write_u8(TWL_MODULE_PWM, c, TWL_LED_PWMON);
38232f7b TL	98	#else
	99	pr_warn("Backlight not enabled\n");
	100	#endif
a6490335 K	101
	102	return 0;
	103	}
	104
	105	static struct omap_dss_device zoom_lcd_device = {
	106	.name = "lcd",
	107	.driver_name = "NEC_8048_panel",
	108	.type = OMAP_DISPLAY_TYPE_DPI,
	109	.phy.dpi.data_lines = 24,
	110	.platform_enable = zoom_panel_enable_lcd,
	111	.platform_disable = zoom_panel_disable_lcd,
	112	.max_backlight_level = 100,
	113	.set_backlight = zoom_set_bl_intensity,
	114	};
	115
	116	static struct omap_dss_device *zoom_dss_devices[] = {
	117	&zoom_lcd_device,
	118	};
	119
	120	static struct omap_dss_board_info zoom_dss_data = {
	121	.num_devices = ARRAY_SIZE(zoom_dss_devices),
	122	.devices = zoom_dss_devices,
	123	.default_device = &zoom_lcd_device,
	124	};
	125
a6490335 K	126	static struct omap2_mcspi_device_config dss_lcd_mcspi_config = {
a6490335 K	127	.turbo_mode = 1,
a6490335 K	128	};
	129
	130	static struct spi_board_info nec_8048_spi_board_info[] __initdata = {
	131	[0] = {
	132	.modalias = "nec_8048_spi",
	133	.bus_num = 1,
	134	.chip_select = 2,
	135	.max_speed_hz = 375000,
	136	.controller_data = &dss_lcd_mcspi_config,
	137	},
	138	};
	139
a6490335 K	140	void __init zoom_display_init(void)
a6490335 K	141	{
d5e13227	142	omap_display_init(&zoom_dss_data);
a6490335 K	143	spi_register_board_info(nec_8048_spi_board_info,
	144	ARRAY_SIZE(nec_8048_spi_board_info));
	145	zoom_lcd_panel_init();
	146	}
	147