1 files changed, 284 insertions, 0 deletions

diff --git a/drivers/video/backlight/vgg2432a4.c b/drivers/video/backlight/vgg2432a4.c
new file mode 100644
index 000000000000..593c7687d54a
--- /dev/null
+++ b/drivers/video/backlight/vgg2432a4.c
@@ -0,0 +1,284 @@
+/* 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, ILI9320_RGBIF2_DPL);
+
+        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 __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");
+
+