[linux.git] / drivers / video / backlight / vgg2432a4.c

/* drivers/video/backlight/vgg2432a4.c
 *
 * VGG2432A4 (ILI9320) LCD controller driver.
 *
 * Copyright 2007 Simtec Electronics
 *	http://armlinux.simtec.co.uk/
 *	Ben Dooks <[email protected]>
 *
 * 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/delay.h>
#include <linux/err.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/lcd.h>
#include <linux/module.h>

#include <linux/spi/spi.h>

#include <video/ili9320.h>

#include "ili9320.h"

/* Device initialisation sequences */

static const struct ili9320_reg vgg_init1[] = {
	{
		.address = ILI9320_POWER1,
		.value	 = ILI9320_POWER1_AP(0) | ILI9320_POWER1_BT(0),
	}, {
		.address = ILI9320_POWER2,
		.value	 = (ILI9320_POWER2_VC(7) |
			    ILI9320_POWER2_DC0(0) | ILI9320_POWER2_DC1(0)),
	}, {
		.address = ILI9320_POWER3,
		.value	 = ILI9320_POWER3_VRH(0),
	}, {
		.address = ILI9320_POWER4,
		.value	 = ILI9320_POWER4_VREOUT(0),
	},
};

static const struct ili9320_reg vgg_init2[] = {
	{
		.address = ILI9320_POWER1,
		.value   = (ILI9320_POWER1_AP(3) | ILI9320_POWER1_APE |
			    ILI9320_POWER1_BT(7) | ILI9320_POWER1_SAP),
	}, {
		.address = ILI9320_POWER2,
		.value   = ILI9320_POWER2_VC(7) | ILI9320_POWER2_DC0(3),
	}
};

static const struct ili9320_reg vgg_gamma[] = {
	{
		.address = ILI9320_GAMMA1,
		.value	 = 0x0000,
	}, {
		.address = ILI9320_GAMMA2,
		.value   = 0x0505,
	}, {
		.address = ILI9320_GAMMA3,
		.value	 = 0x0004,
	}, {
		.address = ILI9320_GAMMA4,
		.value	 = 0x0006,
	}, {
		.address = ILI9320_GAMMA5,
		.value	 = 0x0707,
	}, {
		.address = ILI9320_GAMMA6,
		.value	 = 0x0105,
	}, {
		.address = ILI9320_GAMMA7,
		.value	 = 0x0002,
	}, {
		.address = ILI9320_GAMMA8,
		.value	 = 0x0707,
	}, {
		.address = ILI9320_GAMMA9,
		.value	 = 0x0704,
	}, {
		.address = ILI9320_GAMMA10,
		.value	 = 0x807,
	}

};

static const struct ili9320_reg vgg_init0[] = {
	[0]	= {
		/* set direction and scan mode gate */
		.address = ILI9320_DRIVER,
		.value	 = ILI9320_DRIVER_SS,
	}, {
		.address = ILI9320_DRIVEWAVE,
		.value	 = (ILI9320_DRIVEWAVE_MUSTSET |
			    ILI9320_DRIVEWAVE_EOR | ILI9320_DRIVEWAVE_BC),
	}, {
		.address = ILI9320_ENTRYMODE,
		.value	 = ILI9320_ENTRYMODE_ID(3) | ILI9320_ENTRYMODE_BGR,
	}, {
		.address = ILI9320_RESIZING,
		.value	 = 0x0,
	},
};


static int vgg2432a4_lcd_init(struct ili9320 *lcd,
			      struct ili9320_platdata *cfg)
{
	unsigned int addr;
	int ret;

	/* Set VCore before anything else (VGG243237-6UFLWA) */
	ret = ili9320_write(lcd, 0x00e5, 0x8000);
	if (ret)
		goto err_initial;

	/* Start the oscillator up before we can do anything else. */
	ret = ili9320_write(lcd, ILI9320_OSCILATION, ILI9320_OSCILATION_OSC);
	if (ret)
		goto err_initial;

	/* must wait at-lesat 10ms after starting */
	mdelay(15);

	ret = ili9320_write_regs(lcd, vgg_init0, ARRAY_SIZE(vgg_init0));
	if (ret != 0)
		goto err_initial;

	ili9320_write(lcd, ILI9320_DISPLAY2, cfg->display2);
	ili9320_write(lcd, ILI9320_DISPLAY3, cfg->display3);
	ili9320_write(lcd, ILI9320_DISPLAY4, cfg->display4);

	ili9320_write(lcd, ILI9320_RGB_IF1, cfg->rgb_if1);
	ili9320_write(lcd, ILI9320_FRAMEMAKER, 0x0);
	ili9320_write(lcd, ILI9320_RGB_IF2, cfg->rgb_if2);

	ret = ili9320_write_regs(lcd, vgg_init1, ARRAY_SIZE(vgg_init1));
	if (ret != 0)
		goto err_vgg;

	mdelay(300);

	ret = ili9320_write_regs(lcd, vgg_init2, ARRAY_SIZE(vgg_init2));
	if (ret != 0)
		goto err_vgg2;

	mdelay(100);

	ili9320_write(lcd, ILI9320_POWER3, 0x13c);

	mdelay(100);

	ili9320_write(lcd, ILI9320_POWER4, 0x1c00);
	ili9320_write(lcd, ILI9320_POWER7, 0x000e);

	mdelay(100);

	ili9320_write(lcd, ILI9320_GRAM_HORIZ_ADDR, 0x00);
	ili9320_write(lcd, ILI9320_GRAM_VERT_ADD, 0x00);

	ret = ili9320_write_regs(lcd, vgg_gamma, ARRAY_SIZE(vgg_gamma));
	if (ret != 0)
		goto err_vgg3;

	ili9320_write(lcd, ILI9320_HORIZ_START, 0x0);
	ili9320_write(lcd, ILI9320_HORIZ_END, cfg->hsize - 1);
	ili9320_write(lcd, ILI9320_VERT_START, 0x0);
	ili9320_write(lcd, ILI9320_VERT_END, cfg->vsize - 1);

	ili9320_write(lcd, ILI9320_DRIVER2,
		      ILI9320_DRIVER2_NL(((cfg->vsize - 240) / 8) + 0x1D));

	ili9320_write(lcd, ILI9320_BASE_IMAGE, 0x1);
	ili9320_write(lcd, ILI9320_VERT_SCROLL, 0x00);

	for (addr = ILI9320_PARTIAL1_POSITION; addr <= ILI9320_PARTIAL2_END;
	     addr++) {
		ili9320_write(lcd, addr, 0x0);
	}

	ili9320_write(lcd, ILI9320_INTERFACE1, 0x10);
	ili9320_write(lcd, ILI9320_INTERFACE2, cfg->interface2);
	ili9320_write(lcd, ILI9320_INTERFACE3, cfg->interface3);
	ili9320_write(lcd, ILI9320_INTERFACE4, cfg->interface4);
	ili9320_write(lcd, ILI9320_INTERFACE5, cfg->interface5);
	ili9320_write(lcd, ILI9320_INTERFACE6, cfg->interface6);

	lcd->display1 = (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_DTE |
			 ILI9320_DISPLAY1_GON | ILI9320_DISPLAY1_BASEE |
			 0x40);

	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);

	return 0;

 err_vgg3:
 err_vgg2:
 err_vgg:
 err_initial:
	return ret;
}

#ifdef CONFIG_PM_SLEEP
static int vgg2432a4_suspend(struct device *dev)
{
	return ili9320_suspend(dev_get_drvdata(dev));
}
static int vgg2432a4_resume(struct device *dev)
{
	return ili9320_resume(dev_get_drvdata(dev));
}
#endif

static struct ili9320_client vgg2432a4_client = {
	.name	= "VGG2432A4",
	.init	= vgg2432a4_lcd_init,
};

/* Device probe */

static int vgg2432a4_probe(struct spi_device *spi)
{
	int ret;

	ret = ili9320_probe_spi(spi, &vgg2432a4_client);
	if (ret != 0) {
		dev_err(&spi->dev, "failed to initialise ili9320\n");
		return ret;
	}

	return 0;
}

static int vgg2432a4_remove(struct spi_device *spi)
{
	return ili9320_remove(spi_get_drvdata(spi));
}

static void vgg2432a4_shutdown(struct spi_device *spi)
{
	ili9320_shutdown(spi_get_drvdata(spi));
}

static SIMPLE_DEV_PM_OPS(vgg2432a4_pm_ops, vgg2432a4_suspend, vgg2432a4_resume);

static struct spi_driver vgg2432a4_driver = {
	.driver = {
		.name		= "VGG2432A4",
		.pm		= &vgg2432a4_pm_ops,
	},
	.probe		= vgg2432a4_probe,
	.remove		= vgg2432a4_remove,
	.shutdown	= vgg2432a4_shutdown,
};

module_spi_driver(vgg2432a4_driver);

MODULE_AUTHOR("Ben Dooks <[email protected]>");
MODULE_DESCRIPTION("VGG2432A4 LCD Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("spi:VGG2432A4");
Commit	Line	Data
cccb6d3c BD	1	/* drivers/video/backlight/vgg2432a4.c
	2	*
	3	* VGG2432A4 (ILI9320) LCD controller driver.
	4	*
	5	* Copyright 2007 Simtec Electronics
	6	* http://armlinux.simtec.co.uk/
	7	* Ben Dooks <[email protected]>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13
	14	#include <linux/delay.h>
	15	#include <linux/err.h>
	16	#include <linux/fb.h>
	17	#include <linux/init.h>
	18	#include <linux/lcd.h>
	19	#include <linux/module.h>
	20
	21	#include <linux/spi/spi.h>
	22
	23	#include <video/ili9320.h>
	24
	25	#include "ili9320.h"
	26
	27	/* Device initialisation sequences */
	28
3fd00432	29	static const struct ili9320_reg vgg_init1[] = {
cccb6d3c BD	30	{
	31	.address = ILI9320_POWER1,
	32	.value = ILI9320_POWER1_AP(0) \| ILI9320_POWER1_BT(0),
	33	}, {
	34	.address = ILI9320_POWER2,
	35	.value = (ILI9320_POWER2_VC(7) \|
	36	ILI9320_POWER2_DC0(0) \| ILI9320_POWER2_DC1(0)),
	37	}, {
	38	.address = ILI9320_POWER3,
	39	.value = ILI9320_POWER3_VRH(0),
	40	}, {
	41	.address = ILI9320_POWER4,
	42	.value = ILI9320_POWER4_VREOUT(0),
	43	},
	44	};
	45
3fd00432	46	static const struct ili9320_reg vgg_init2[] = {
cccb6d3c BD	47	{
	48	.address = ILI9320_POWER1,
	49	.value = (ILI9320_POWER1_AP(3) \| ILI9320_POWER1_APE \|
	50	ILI9320_POWER1_BT(7) \| ILI9320_POWER1_SAP),
	51	}, {
	52	.address = ILI9320_POWER2,
	53	.value = ILI9320_POWER2_VC(7) \| ILI9320_POWER2_DC0(3),
	54	}
	55	};
	56
3fd00432	57	static const struct ili9320_reg vgg_gamma[] = {
cccb6d3c BD	58	{
	59	.address = ILI9320_GAMMA1,
	60	.value = 0x0000,
	61	}, {
	62	.address = ILI9320_GAMMA2,
	63	.value = 0x0505,
	64	}, {
	65	.address = ILI9320_GAMMA3,
	66	.value = 0x0004,
	67	}, {
	68	.address = ILI9320_GAMMA4,
	69	.value = 0x0006,
	70	}, {
	71	.address = ILI9320_GAMMA5,
	72	.value = 0x0707,
	73	}, {
	74	.address = ILI9320_GAMMA6,
	75	.value = 0x0105,
	76	}, {
	77	.address = ILI9320_GAMMA7,
	78	.value = 0x0002,
	79	}, {
	80	.address = ILI9320_GAMMA8,
	81	.value = 0x0707,
	82	}, {
	83	.address = ILI9320_GAMMA9,
	84	.value = 0x0704,
	85	}, {
	86	.address = ILI9320_GAMMA10,
	87	.value = 0x807,
	88	}
	89
	90	};
	91
3fd00432	92	static const struct ili9320_reg vgg_init0[] = {
cccb6d3c BD	93	[0] = {
	94	/* set direction and scan mode gate */
	95	.address = ILI9320_DRIVER,
	96	.value = ILI9320_DRIVER_SS,
	97	}, {
	98	.address = ILI9320_DRIVEWAVE,
	99	.value = (ILI9320_DRIVEWAVE_MUSTSET \|
	100	ILI9320_DRIVEWAVE_EOR \| ILI9320_DRIVEWAVE_BC),
	101	}, {
	102	.address = ILI9320_ENTRYMODE,
	103	.value = ILI9320_ENTRYMODE_ID(3) \| ILI9320_ENTRYMODE_BGR,
	104	}, {
	105	.address = ILI9320_RESIZING,
	106	.value = 0x0,
	107	},
	108	};
	109
	110
	111	static int vgg2432a4_lcd_init(struct ili9320 *lcd,
	112	struct ili9320_platdata *cfg)
	113	{
	114	unsigned int addr;
	115	int ret;
	116
	117	/* Set VCore before anything else (VGG243237-6UFLWA) */
	118	ret = ili9320_write(lcd, 0x00e5, 0x8000);
	119	if (ret)
	120	goto err_initial;
	121
	122	/* Start the oscillator up before we can do anything else. */
	123	ret = ili9320_write(lcd, ILI9320_OSCILATION, ILI9320_OSCILATION_OSC);
	124	if (ret)
	125	goto err_initial;
	126
	127	/* must wait at-lesat 10ms after starting */
	128	mdelay(15);
	129
	130	ret = ili9320_write_regs(lcd, vgg_init0, ARRAY_SIZE(vgg_init0));
	131	if (ret != 0)
	132	goto err_initial;
	133
	134	ili9320_write(lcd, ILI9320_DISPLAY2, cfg->display2);
	135	ili9320_write(lcd, ILI9320_DISPLAY3, cfg->display3);
	136	ili9320_write(lcd, ILI9320_DISPLAY4, cfg->display4);
	137
	138	ili9320_write(lcd, ILI9320_RGB_IF1, cfg->rgb_if1);
	139	ili9320_write(lcd, ILI9320_FRAMEMAKER, 0x0);
866bbdba	140	ili9320_write(lcd, ILI9320_RGB_IF2, cfg->rgb_if2);
cccb6d3c BD	141
	142	ret = ili9320_write_regs(lcd, vgg_init1, ARRAY_SIZE(vgg_init1));
	143	if (ret != 0)
	144	goto err_vgg;
	145
	146	mdelay(300);
	147
	148	ret = ili9320_write_regs(lcd, vgg_init2, ARRAY_SIZE(vgg_init2));
	149	if (ret != 0)
	150	goto err_vgg2;
	151
	152	mdelay(100);
	153
	154	ili9320_write(lcd, ILI9320_POWER3, 0x13c);
	155
	156	mdelay(100);
	157
	158	ili9320_write(lcd, ILI9320_POWER4, 0x1c00);
	159	ili9320_write(lcd, ILI9320_POWER7, 0x000e);
	160
	161	mdelay(100);
	162
	163	ili9320_write(lcd, ILI9320_GRAM_HORIZ_ADDR, 0x00);
	164	ili9320_write(lcd, ILI9320_GRAM_VERT_ADD, 0x00);
	165
	166	ret = ili9320_write_regs(lcd, vgg_gamma, ARRAY_SIZE(vgg_gamma));
	167	if (ret != 0)
	168	goto err_vgg3;
	169
	170	ili9320_write(lcd, ILI9320_HORIZ_START, 0x0);
	171	ili9320_write(lcd, ILI9320_HORIZ_END, cfg->hsize - 1);
	172	ili9320_write(lcd, ILI9320_VERT_START, 0x0);
	173	ili9320_write(lcd, ILI9320_VERT_END, cfg->vsize - 1);
	174
	175	ili9320_write(lcd, ILI9320_DRIVER2,
	176	ILI9320_DRIVER2_NL(((cfg->vsize - 240) / 8) + 0x1D));
	177
	178	ili9320_write(lcd, ILI9320_BASE_IMAGE, 0x1);
	179	ili9320_write(lcd, ILI9320_VERT_SCROLL, 0x00);
	180
	181	for (addr = ILI9320_PARTIAL1_POSITION; addr <= ILI9320_PARTIAL2_END;
	182	addr++) {
	183	ili9320_write(lcd, addr, 0x0);
	184	}
	185
	186	ili9320_write(lcd, ILI9320_INTERFACE1, 0x10);
	187	ili9320_write(lcd, ILI9320_INTERFACE2, cfg->interface2);
	188	ili9320_write(lcd, ILI9320_INTERFACE3, cfg->interface3);
	189	ili9320_write(lcd, ILI9320_INTERFACE4, cfg->interface4);
	190	ili9320_write(lcd, ILI9320_INTERFACE5, cfg->interface5);
	191	ili9320_write(lcd, ILI9320_INTERFACE6, cfg->interface6);
	192
	193	lcd->display1 = (ILI9320_DISPLAY1_D(3) \| ILI9320_DISPLAY1_DTE \|
	194	ILI9320_DISPLAY1_GON \| ILI9320_DISPLAY1_BASEE \|
	195	0x40);
	196
	197	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);
	198
	199	return 0;
	200
	201	err_vgg3:
	202	err_vgg2:
	203	err_vgg:
	204	err_initial:
205	return ret;
206	}
207
eb39ad25 JH	208	#ifdef CONFIG_PM_SLEEP
eb39ad25 JH	209	static int vgg2432a4_suspend(struct device *dev)
cccb6d3c	210	{
eb39ad25	211	return ili9320_suspend(dev_get_drvdata(dev));
cccb6d3c	212	}
eb39ad25	213	static int vgg2432a4_resume(struct device *dev)
cccb6d3c	214	{
eb39ad25	215	return ili9320_resume(dev_get_drvdata(dev));
cccb6d3c	216	}
cccb6d3c BD	217	#endif
	218
	219	static struct ili9320_client vgg2432a4_client = {
	220	.name = "VGG2432A4",
	221	.init = vgg2432a4_lcd_init,
	222	};
	223
	224	/* Device probe */
	225
1b9e450d	226	static int vgg2432a4_probe(struct spi_device *spi)
cccb6d3c BD	227	{
	228	int ret;
	229
	230	ret = ili9320_probe_spi(spi, &vgg2432a4_client);
	231	if (ret != 0) {
	232	dev_err(&spi->dev, "failed to initialise ili9320\n");
	233	return ret;
	234	}
	235
	236	return 0;
	237	}
	238
7e4b9d0b	239	static int vgg2432a4_remove(struct spi_device *spi)
cccb6d3c	240	{
1b8d2834	241	return ili9320_remove(spi_get_drvdata(spi));
cccb6d3c BD	242	}
	243
	244	static void vgg2432a4_shutdown(struct spi_device *spi)
	245	{
1b8d2834	246	ili9320_shutdown(spi_get_drvdata(spi));
cccb6d3c BD	247	}
cccb6d3c BD	248
eb39ad25 JH	249	static SIMPLE_DEV_PM_OPS(vgg2432a4_pm_ops, vgg2432a4_suspend, vgg2432a4_resume);
eb39ad25 JH	250
cccb6d3c BD	251	static struct spi_driver vgg2432a4_driver = {
	252	.driver = {
	253	.name = "VGG2432A4",
eb39ad25	254	.pm = &vgg2432a4_pm_ops,
cccb6d3c BD	255	},
cccb6d3c BD	256	.probe = vgg2432a4_probe,
d1723fa2	257	.remove = vgg2432a4_remove,
cccb6d3c	258	.shutdown = vgg2432a4_shutdown,
cccb6d3c BD	259	};
cccb6d3c BD	260
462dd838	261	module_spi_driver(vgg2432a4_driver);
cccb6d3c BD	262
	263	MODULE_AUTHOR("Ben Dooks <[email protected]>");
	264	MODULE_DESCRIPTION("VGG2432A4 LCD Driver");
	265	MODULE_LICENSE("GPL v2");
e0626e38	266	MODULE_ALIAS("spi:VGG2432A4");