omapfb: add support for the OMAP3 EVM LCD

objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o

objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o

objs-y$(CONFIG_MACH_OMAP_3430SDP) += lcd_2430sdp.o

objs-y$(CONFIG_MACH_OMAP_3430SDP) += lcd_2430sdp.o

objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o

objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o

objs-y$(CONFIG_MACH_OMAP3EVM) += lcd_omap3evm.o

objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o

objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o

omapfb-objs := $(objs-yy)

omapfb-objs := $(objs-yy)

/*

 * LCD panel support for the TI OMAP3 EVM board

 *

 * Author: Steve Sakoman <steve@sakoman.com>

 *

 * Derived from drivers/video/omap/lcd-apollon.c

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the

 * Free Software Foundation; either version 2 of the License, or (at your

 * option) any later version.

 *

 * 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.

 *

 * You should have received a copy of the GNU General Public License along

 * with this program; if not, write to the Free Software Foundation, Inc.,

 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

 */

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/gpio.h>

#include <linux/i2c/twl4030.h>

#include <mach/mux.h>

#include <mach/omapfb.h>

#include <asm/mach-types.h>

#define LCD_PANEL_ENABLE_GPIO       153

#define LCD_PANEL_LR                2

#define LCD_PANEL_UD                3

#define LCD_PANEL_INI               152

#define LCD_PANEL_QVGA              154

#define LCD_PANEL_RESB              155

#define ENABLE_VDAC_DEDICATED	0x03

#define ENABLE_VDAC_DEV_GRP	0x20

#define ENABLE_VPLL2_DEDICATED	0x05

#define ENABLE_VPLL2_DEV_GRP	0xE0

#define TWL_LED_LEDEN		0x00

#define TWL_PWMA_PWMAON		0x00

#define TWL_PWMA_PWMAOFF	0x01

static unsigned int bklight_level;

static int omap3evm_panel_init(struct lcd_panel *panel,

				struct omapfb_device *fbdev)

{

	gpio_request(LCD_PANEL_LR, "LCD lr");

	gpio_request(LCD_PANEL_UD, "LCD ud");

	gpio_request(LCD_PANEL_INI, "LCD ini");

	gpio_request(LCD_PANEL_RESB, "LCD resb");

	gpio_request(LCD_PANEL_QVGA, "LCD qvga");

	gpio_direction_output(LCD_PANEL_RESB, 1);

	gpio_direction_output(LCD_PANEL_INI, 1);

	gpio_direction_output(LCD_PANEL_QVGA, 0);

	gpio_direction_output(LCD_PANEL_LR, 1);

	gpio_direction_output(LCD_PANEL_UD, 1);

	twl4030_i2c_write_u8(TWL4030_MODULE_LED, 0x11, TWL_LED_LEDEN);

	twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON);

	twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF);

	bklight_level = 100;

	return 0;

}

static void omap3evm_panel_cleanup(struct lcd_panel *panel)

{

	gpio_free(LCD_PANEL_QVGA);

	gpio_free(LCD_PANEL_RESB);

	gpio_free(LCD_PANEL_INI);

	gpio_free(LCD_PANEL_UD);

	gpio_free(LCD_PANEL_LR);

}

static int omap3evm_panel_enable(struct lcd_panel *panel)

{

	gpio_set_value(LCD_PANEL_ENABLE_GPIO, 0);

	return 0;

}

static void omap3evm_panel_disable(struct lcd_panel *panel)

{

	gpio_set_value(LCD_PANEL_ENABLE_GPIO, 1);

}

static unsigned long omap3evm_panel_get_caps(struct lcd_panel *panel)

{

	return 0;

}

static int omap3evm_bklight_setlevel(struct lcd_panel *panel,

						unsigned int level)

{

	u8 c;

	if ((level >= 0) && (level <= 100)) {

		c = (125 * (100 - level)) / 100 + 2;

		twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, c, TWL_PWMA_PWMAOFF);

		bklight_level = level;

	}

	return 0;

}

static unsigned int omap3evm_bklight_getlevel(struct lcd_panel *panel)

{

	return bklight_level;

}

static unsigned int omap3evm_bklight_getmaxlevel(struct lcd_panel *panel)

{

	return 100;

}

struct lcd_panel omap3evm_panel = {

	.name		= "omap3evm",

	.config		= OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |

			  OMAP_LCDC_INV_HSYNC,

	.bpp		= 16,

	.data_lines	= 18,

	.x_res		= 480,

	.y_res		= 640,

	.hsw		= 3,		/* hsync_len (4) - 1 */

	.hfp		= 3,		/* right_margin (4) - 1 */

	.hbp		= 39,		/* left_margin (40) - 1 */

	.vsw		= 1,		/* vsync_len (2) - 1 */

	.vfp		= 2,		/* lower_margin */

	.vbp		= 7,		/* upper_margin (8) - 1 */

	.pixel_clock	= 26000,

	.init		= omap3evm_panel_init,

	.cleanup	= omap3evm_panel_cleanup,

	.enable		= omap3evm_panel_enable,

	.disable	= omap3evm_panel_disable,

	.get_caps	= omap3evm_panel_get_caps,

	.set_bklight_level      = omap3evm_bklight_setlevel,

	.get_bklight_level      = omap3evm_bklight_getlevel,

	.get_bklight_max        = omap3evm_bklight_getmaxlevel,

};

static int omap3evm_panel_probe(struct platform_device *pdev)

{

	omapfb_register_panel(&omap3evm_panel);

	return 0;

}

static int omap3evm_panel_remove(struct platform_device *pdev)

{

	return 0;

}

static int omap3evm_panel_suspend(struct platform_device *pdev,

				   pm_message_t mesg)

{

	return 0;

}

static int omap3evm_panel_resume(struct platform_device *pdev)

{

	return 0;

}

struct platform_driver omap3evm_panel_driver = {

	.probe		= omap3evm_panel_probe,

	.remove		= omap3evm_panel_remove,

	.suspend	= omap3evm_panel_suspend,

	.resume		= omap3evm_panel_resume,

	.driver		= {

		.name	= "omap3evm_lcd",

		.owner	= THIS_MODULE,

	},

};

static int __init omap3evm_panel_drv_init(void)

{

	return platform_driver_register(&omap3evm_panel_driver);

}

static void __exit omap3evm_panel_drv_exit(void)

{

	platform_driver_unregister(&omap3evm_panel_driver);

}

module_init(omap3evm_panel_drv_init);

module_exit(omap3evm_panel_drv_exit);