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>

1 files changed, 80 insertions, 0 deletions

diff --git a/drivers/video/backlight/ili9320.h b/drivers/video/backlight/ili9320.h
new file mode 100644
index 000000000000..e388eca7cac5
--- /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);