/* drivers/video/backlight/vgg2432a4.c * * VGG2432A4 (ILI9320) LCD controller driver. * * Copyright 2007 Simtec Electronics *	http://armlinux.simtec.co.uk/ *	Ben Dooks <ben@simtec.co.uk> * * 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 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 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 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 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_PMstatic int vgg2432a4_suspend(struct spi_device *spi, pm_message_t state){	return ili9320_suspend(dev_get_drvdata(&spi->dev), state);}static int vgg2432a4_resume(struct spi_device *spi){	return ili9320_resume(dev_get_drvdata(&spi->dev));}#else#define vgg2432a4_suspend	NULL#define vgg2432a4_resume 	NULL#endifstatic struct ili9320_client vgg2432a4_client = {	.name	= "VGG2432A4",	.init	= vgg2432a4_lcd_init,};/* Device probe */static int __devinit 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 __devexit vgg2432a4_remove(struct spi_device *spi){	return ili9320_remove(dev_get_drvdata(&spi->dev));}static void vgg2432a4_shutdown(struct spi_device *spi){	ili9320_shutdown(dev_get_drvdata(&spi->dev));}static struct spi_driver vgg2432a4_driver = {	.driver = {		.name		= "VGG2432A4",		.owner		= THIS_MODULE,	},	.probe		= vgg2432a4_probe,	.remove		= __devexit_p(vgg2432a4_remove),	.shutdown	= vgg2432a4_shutdown,	.suspend	= vgg2432a4_suspend,	.resume		= vgg2432a4_resume,};/* Device driver initialisation */static int __init vgg2432a4_init(void){	return spi_register_driver(&vgg2432a4_driver);}static void __exit vgg2432a4_exit(void){	spi_unregister_driver(&vgg2432a4_driver);}module_init(vgg2432a4_init);module_exit(vgg2432a4_exit);MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");MODULE_DESCRIPTION("VGG2432A4 LCD Driver");MODULE_LICENSE("GPL v2");