linux-imx

/*

 *  LCD / Backlight control code for Sharp SL-6000x (tosa)

 *

 *  Copyright (c) 2005      Dirk Opfer

 *  Copyright (c) 2007,2008 Dmitry Baryshkov

 *

 *  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/kernel.h>

#include <linux/module.h>

#include <linux/device.h>

#include <linux/spi/spi.h>

#include <linux/i2c.h>

#include <linux/slab.h>

#include <linux/gpio.h>

#include <linux/delay.h>

#include <linux/lcd.h>

#include <linux/fb.h>

​

#include <asm/mach/sharpsl_param.h>

​

#include <mach/tosa.h>

​

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

​

#define TG_REG0_VQV 0x0001

#define TG_REG0_COLOR   0x0002

#define TG_REG0_UD  0x0004

#define TG_REG0_LR  0x0008

​

#define DAC_BASE    0x4e

​

struct tosa_lcd_data {

    struct spi_device *spi;

    struct lcd_device *lcd;

    struct i2c_client *i2c;

​

    int lcd_power;

    bool is_vga;

};

​

static int tosa_tg_send(struct spi_device *spi, int adrs, uint8_t data)

{

    u8 buf[1];

    struct spi_message msg;

    struct spi_transfer xfer = {

        .len        = 1,

        .cs_change  = 0,

        .tx_buf     = buf,

    };

​

    buf[0] = ((adrs & 0x07) << 5) | (data & 0x1f);

    spi_message_init(&msg);

    spi_message_add_tail(&xfer, &msg);

​

    return spi_sync(spi, &msg);

}

​

int tosa_bl_enable(struct spi_device *spi, int enable)