| /* 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_PM |
| static 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 |
| #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(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 = vgg2432a4_remove, |
| .shutdown = vgg2432a4_shutdown, |
| .suspend = vgg2432a4_suspend, |
| .resume = vgg2432a4_resume, |
| }; |
| |
| module_spi_driver(vgg2432a4_driver); |
| |
| MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>"); |
| MODULE_DESCRIPTION("VGG2432A4 LCD Driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("spi:VGG2432A4"); |