From cccb6d3c149603b9c15d3c460dff317455df1766 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Wed, 23 Jul 2008 21:31:37 -0700
Subject: fb: add support for the ILI9320 video display controller

Provide support for the ILI9320 display controller chip which is found in
many LCD displays.  Included with this is support for an example LCD using
this chip, the VGG2432A4.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 drivers/video/backlight/Kconfig     |  17 ++
 drivers/video/backlight/Makefile    |   4 +-
 drivers/video/backlight/ili9320.c   | 330 ++++++++++++++++++++++++++++++++++++
 drivers/video/backlight/ili9320.h   |  80 +++++++++
 drivers/video/backlight/vgg2432a4.c | 284 +++++++++++++++++++++++++++++++
 5 files changed, 714 insertions(+), 1 deletion(-)
 create mode 100644 drivers/video/backlight/ili9320.c
 create mode 100644 drivers/video/backlight/ili9320.h
 create mode 100644 drivers/video/backlight/vgg2432a4.c

(limited to 'drivers/video/backlight')

diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 30bf7f2f163..a5b3a92ffdc 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -36,6 +36,23 @@ config LCD_LTV350QV
 
 	  The LTV350QV panel is present on all ATSTK1000 boards.
 
+config LCD_ILI9320
+	tristate
+	depends on LCD_CLASS_DEVICE && BACKLIGHT_LCD_SUPPORT
+	default n
+	help
+	  If you have a panel based on the ILI9320 controller chip
+	  then say y to include a power driver for it.
+
+config LCD_VGG2432A4
+	tristate "VGG2432A4 LCM device support"
+	depends on BACKLIGHT_LCD_SUPPORT && LCD_CLASS_DEVICE && SPI_MASTER
+	select LCD_ILI9320
+	default n
+	help
+	  If you have a VGG2432A4 panel based on the ILI9320 controller chip
+	  then say y to include a power driver for it.
+
 #
 # Backlight
 #
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index b51a7cd1250..366d84e380c 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -1,7 +1,9 @@
 # Backlight & LCD drivers
 
 obj-$(CONFIG_LCD_CLASS_DEVICE)     += lcd.o
-obj-$(CONFIG_LCD_LTV350QV)	+= ltv350qv.o
+obj-$(CONFIG_LCD_LTV350QV)	   += ltv350qv.o
+obj-$(CONFIG_LCD_ILI9320)	   += ili9320.o
+obj-$(CONFIG_LCD_VGG2432A4)	   += vgg2432a4.o
 
 obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
 obj-$(CONFIG_BACKLIGHT_CORGI)	+= corgi_bl.o
diff --git a/drivers/video/backlight/ili9320.c b/drivers/video/backlight/ili9320.c
new file mode 100644
index 00000000000..ba89b41b639
--- /dev/null
+++ b/drivers/video/backlight/ili9320.c
@@ -0,0 +1,330 @@
+/* drivers/video/backlight/ili9320.c
+ *
+ * ILI9320 LCD controller driver core.
+ *
+ * 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"
+
+
+static inline int ili9320_write_spi(struct ili9320 *ili,
+				    unsigned int reg,
+				    unsigned int value)
+{
+	struct ili9320_spi *spi = &ili->access.spi;
+	unsigned char *addr = spi->buffer_addr;
+	unsigned char *data = spi->buffer_data;
+
+	/* spi message consits of:
+	 * first byte: ID and operation
+	 */
+
+	addr[0] = spi->id | ILI9320_SPI_INDEX | ILI9320_SPI_WRITE;
+	addr[1] = reg >> 8;
+	addr[2] = reg;
+
+	/* second message is the data to transfer */
+
+	data[0] = spi->id | ILI9320_SPI_DATA  | ILI9320_SPI_WRITE;
+ 	data[1] = value >> 8;
+	data[2] = value;
+
+	return spi_sync(spi->dev, &spi->message);
+}
+
+int ili9320_write(struct ili9320 *ili, unsigned int reg, unsigned int value)
+{
+	dev_dbg(ili->dev, "write: reg=%02x, val=%04x\n", reg, value);
+	return ili->write(ili, reg, value);
+}
+
+EXPORT_SYMBOL_GPL(ili9320_write);
+
+int ili9320_write_regs(struct ili9320 *ili,
+		       struct ili9320_reg *values,
+		       int nr_values)
+{
+	int index;
+	int ret;
+
+	for (index = 0; index < nr_values; index++, values++) {
+		ret = ili9320_write(ili, values->address, values->value);
+		if (ret != 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_write_regs);
+
+static void ili9320_reset(struct ili9320 *lcd)
+{
+	struct ili9320_platdata *cfg = lcd->platdata;
+
+	cfg->reset(1);
+	mdelay(50);
+
+	cfg->reset(0);
+	mdelay(50);
+
+	cfg->reset(1);
+	mdelay(100);
+}
+
+static inline int ili9320_init_chip(struct ili9320 *lcd)
+{
+	int ret;
+
+	ili9320_reset(lcd);
+
+	ret = lcd->client->init(lcd, lcd->platdata);
+	if (ret != 0) {
+		dev_err(lcd->dev, "failed to initialise display\n");
+		return ret;
+	}
+
+	lcd->initialised = 1;
+	return 0;
+}
+
+static inline int ili9320_power_on(struct ili9320 *lcd)
+{
+	if (!lcd->initialised)
+		ili9320_init_chip(lcd);
+
+	lcd->display1 |= (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);
+	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);
+
+	return 0;
+}
+
+static inline int ili9320_power_off(struct ili9320 *lcd)
+{
+	lcd->display1 &= ~(ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);
+	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);
+
+	return 0;
+}
+
+#define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
+
+static int ili9320_power(struct ili9320 *lcd, int power)
+{
+	int ret = 0;
+
+	dev_dbg(lcd->dev, "power %d => %d\n", lcd->power, power);
+
+	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+		ret = ili9320_power_on(lcd);
+	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+		ret = ili9320_power_off(lcd);
+
+	if (ret == 0)
+		lcd->power = power;
+	else
+		dev_warn(lcd->dev, "failed to set power mode %d\n", power);
+
+	return ret;
+}
+
+static inline struct ili9320 *to_our_lcd(struct lcd_device *lcd)
+{
+	return lcd_get_data(lcd);
+}
+
+static int ili9320_set_power(struct lcd_device *ld, int power)
+{
+	struct ili9320 *lcd = to_our_lcd(ld);
+
+	return ili9320_power(lcd, power);
+}
+
+static int ili9320_get_power(struct lcd_device *ld)
+{
+	struct ili9320 *lcd = to_our_lcd(ld);
+
+	return lcd->power;
+}
+
+static struct lcd_ops ili9320_ops = {
+	.get_power	= ili9320_get_power,
+	.set_power	= ili9320_set_power,
+};
+
+static void __devinit ili9320_setup_spi(struct ili9320 *ili,
+					struct spi_device *dev)
+{
+	struct ili9320_spi *spi = &ili->access.spi;
+
+	ili->write = ili9320_write_spi;
+	spi->dev = dev;
+
+	/* fill the two messages we are going to use to send the data
+	 * with, the first the address followed by the data. The datasheet
+	 * says they should be done as two distinct cycles of the SPI CS line.
+	 */
+
+	spi->xfer[0].tx_buf = spi->buffer_addr;
+	spi->xfer[1].tx_buf = spi->buffer_data;
+	spi->xfer[0].len = 3;
+	spi->xfer[1].len = 3;
+	spi->xfer[0].bits_per_word = 8;
+	spi->xfer[1].bits_per_word = 8;
+	spi->xfer[0].cs_change = 1;
+
+	spi_message_init(&spi->message);
+	spi_message_add_tail(&spi->xfer[0], &spi->message);
+	spi_message_add_tail(&spi->xfer[1], &spi->message);
+}
+
+int __devinit ili9320_probe_spi(struct spi_device *spi,
+				struct ili9320_client *client)
+{
+	struct ili9320_platdata *cfg = spi->dev.platform_data;
+	struct device *dev = &spi->dev;
+	struct ili9320 *ili;
+	struct lcd_device *lcd;
+	int ret = 0;
+
+	/* verify we where given some information */
+
+	if (cfg == NULL) {
+		dev_err(dev, "no platform data supplied\n");
+		return -EINVAL;
+	}
+
+	if (cfg->hsize <= 0 || cfg->vsize <= 0 || cfg->reset == NULL) {
+		dev_err(dev, "invalid platform data supplied\n");
+		return -EINVAL;
+	}
+
+	/* allocate and initialse our state */
+
+	ili = kzalloc(sizeof(struct ili9320), GFP_KERNEL);
+	if (ili == NULL) {
+		dev_err(dev, "no memory for device\n");
+		return -ENOMEM;
+	}
+
+	ili->access.spi.id = ILI9320_SPI_IDCODE | ILI9320_SPI_ID(1);
+
+	ili->dev = dev;
+	ili->client = client;
+	ili->power = FB_BLANK_POWERDOWN;
+	ili->platdata = cfg;
+
+	dev_set_drvdata(&spi->dev, ili);
+
+	ili9320_setup_spi(ili, spi);
+
+	lcd = lcd_device_register("ili9320", dev, ili, &ili9320_ops);
+	if (IS_ERR(lcd)) {
+		dev_err(dev, "failed to register lcd device\n");
+		ret = PTR_ERR(lcd);
+		goto err_free;
+	}
+
+	ili->lcd = lcd;
+
+	dev_info(dev, "initialising %s\n", client->name);
+
+	ret = ili9320_power(ili, FB_BLANK_UNBLANK);
+	if (ret != 0) {
+		dev_err(dev, "failed to set lcd power state\n");
+		goto err_unregister;
+	}
+
+	return 0;
+
+ err_unregister:
+	lcd_device_unregister(lcd);
+
+ err_free:
+	kfree(ili);
+
+	return ret;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_probe_spi);
+
+int __devexit ili9320_remove(struct ili9320 *ili)
+{
+	ili9320_power(ili, FB_BLANK_POWERDOWN);
+
+	lcd_device_unregister(ili->lcd);
+	kfree(ili);
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_remove);
+
+#ifdef CONFIG_PM
+int ili9320_suspend(struct ili9320 *lcd, pm_message_t state)
+{
+	int ret;
+
+	dev_dbg(lcd->dev, "%s: event %d\n", __func__, state.event);
+
+	if (state.event == PM_EVENT_SUSPEND) {
+		ret = ili9320_power(lcd, FB_BLANK_POWERDOWN);
+
+		if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {
+			ili9320_write(lcd, ILI9320_POWER1, lcd->power1 |
+				      ILI9320_POWER1_SLP |
+				      ILI9320_POWER1_DSTB);
+			lcd->initialised = 0;
+		}
+
+		return ret;
+	}
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_suspend);
+
+int ili9320_resume(struct ili9320 *lcd)
+{
+	dev_info(lcd->dev, "resuming from power state %d\n", lcd->power);
+
+	if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {
+		ili9320_write(lcd, ILI9320_POWER1, 0x00);
+	}
+
+	return ili9320_power(lcd, FB_BLANK_UNBLANK);
+}
+
+EXPORT_SYMBOL_GPL(ili9320_resume);
+#endif
+
+/* Power down all displays on reboot, poweroff or halt */
+void ili9320_shutdown(struct ili9320 *lcd)
+{
+	ili9320_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+EXPORT_SYMBOL_GPL(ili9320_shutdown);
+
+MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");
+MODULE_DESCRIPTION("ILI9320 LCD Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/video/backlight/ili9320.h b/drivers/video/backlight/ili9320.h
new file mode 100644
index 00000000000..e388eca7cac
--- /dev/null
+++ b/drivers/video/backlight/ili9320.h
@@ -0,0 +1,80 @@
+/* drivers/video/backlight/ili9320.h
+ *
+ * ILI9320 LCD controller driver core.
+ *
+ * Copyright 2007 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * http://armlinux.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.
+*/
+
+/* Holder for register and value pairs. */
+struct ili9320_reg {
+	unsigned short		address;
+	unsigned short		value;
+};
+
+struct ili9320;
+
+struct ili9320_client {
+	const char	*name;
+	int	(*init)(struct ili9320 *ili, struct ili9320_platdata *cfg);
+
+};
+/* Device attached via an SPI bus. */
+struct  ili9320_spi {
+	struct spi_device	*dev;
+	struct spi_message	message;
+	struct spi_transfer	xfer[2];
+
+	unsigned char		id;
+	unsigned char		buffer_addr[4];
+	unsigned char		buffer_data[4];
+};
+
+/* ILI9320 device state. */
+struct ili9320 {
+	union {
+		struct ili9320_spi	spi;	/* SPI attachged device. */
+	} access;				/* Register access method. */
+
+	struct device			*dev;
+	struct lcd_device		*lcd;	/* LCD device we created. */
+	struct ili9320_client		*client;
+	struct ili9320_platdata		*platdata;
+
+	int				 power; /* current power state. */
+	int				 initialised;
+
+	unsigned short			 display1;
+	unsigned short			 power1;
+
+	int (*write)(struct ili9320 *ili, unsigned int reg, unsigned int val);
+};
+
+
+/* ILI9320 register access routines */
+
+extern int ili9320_write(struct ili9320 *ili,
+			 unsigned int reg, unsigned int value);
+
+extern int ili9320_write_regs(struct ili9320 *ili,
+			      struct ili9320_reg *values,
+			      int nr_values);
+
+/* Device probe */
+
+extern int ili9320_probe_spi(struct spi_device *spi,
+			     struct ili9320_client *cli);
+
+extern int ili9320_remove(struct ili9320 *lcd);
+extern void ili9320_shutdown(struct ili9320 *lcd);
+
+/* PM */
+
+extern int ili9320_suspend(struct ili9320 *lcd, pm_message_t state);
+extern int ili9320_resume(struct ili9320 *lcd);
diff --git a/drivers/video/backlight/vgg2432a4.c b/drivers/video/backlight/vgg2432a4.c
new file mode 100644
index 00000000000..593c7687d54
--- /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");
+
+
-- 
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