linux-imx

/*

 * tdo24m - SPI-based drivers for Toppoly TDO24M series LCD panels

 *

 * Copyright (C) 2008 Marvell International Ltd.

 *  Eric Miao <eric.miao@marvell.com>

 *

 *  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

 *  publishhed by the Free Software Foundation.

 */

​

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/device.h>

#include <linux/spi/spi.h>

#include <linux/spi/tdo24m.h>

#include <linux/fb.h>

#include <linux/lcd.h>

#include <linux/slab.h>

​

#define POWER_IS_ON(pwr)    ((pwr) <= FB_BLANK_NORMAL)

​

#define TDO24M_SPI_BUFF_SIZE    (4)

#define MODE_QVGA   0

#define MODE_VGA    1

​

struct tdo24m {

    struct spi_device   *spi_dev;

    struct lcd_device   *lcd_dev;

​

    struct spi_message  msg;

    struct spi_transfer xfer;

    uint8_t         *buf;

​

    int (*adj_mode)(struct tdo24m *lcd, int mode);

    int color_invert;

​

    int         power;

    int         mode;

};

​

/* use bit 30, 31 as the indicator of command parameter number */

#define CMD0(x)     ((0 << 30) | (x))

#define CMD1(x, x1) ((1 << 30) | ((x) << 9) | 0x100 | (x1))

#define CMD2(x, x1, x2) ((2 << 30) | ((x) << 18) | 0x20000 |\

            ((x1) << 9) | 0x100 | (x2))

#define CMD_NULL    (-1)

​

static const uint32_t lcd_panel_reset[] = {

    CMD0(0x1), /* reset */

    CMD0(0x0), /* nop */

    CMD0(0x0), /* nop */

    CMD0(0x0), /* nop */

    CMD_NULL,

};

​

static const uint32_t lcd_panel_on[] = {

    CMD0(0x29),     /* Display ON */

    CMD2(0xB8, 0xFF, 0xF9), /* Output Control */

    CMD0(0x11),     /* Sleep out */

    CMD1(0xB0, 0x16),   /* Wake */

    CMD_NULL,

};

​

static const uint32_t lcd_panel_off[] = {

    CMD0(0x28),     /* Display OFF */

    CMD2(0xB8, 0x80, 0x02), /* Output Control */

    CMD0(0x10),     /* Sleep in */

    CMD1(0xB0, 0x00),   /* Deep stand by in */

    CMD_NULL,

};

​

static const uint32_t lcd_vga_pass_through_tdo24m[] = {

    CMD1(0xB0, 0x16),

    CMD1(0xBC, 0x80),

    CMD1(0xE1, 0x00),

    CMD1(0x36, 0x50),

    CMD1(0x3B, 0x00),

    CMD_NULL,

};

​

static const uint32_t lcd_qvga_pass_through_tdo24m[] = {

    CMD1(0xB0, 0x16),

    CMD1(0xBC, 0x81),

    CMD1(0xE1, 0x00),

    CMD1(0x36, 0x50),

    CMD1(0x3B, 0x22),

    CMD_NULL,

};

​

static const uint32_t lcd_vga_transfer_tdo24m[] = {