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saar.c

/*
 *  linux/arch/arm/mach-pxa/saar.c
 *
 *  Support for the Marvell PXA930 Handheld Platform (aka SAAR)
 *
 *  Copyright (C) 2007-2008 Marvell International Ltd.
 *
 *  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/interrupt.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/i2c.h>
#include <linux/smc91x.h>
#include <linux/mfd/da903x.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <mach/pxa930.h>
#include <plat/i2c.h>
#include <mach/pxafb.h>

#include "devices.h"
#include "generic.h"

#define GPIO_LCD_RESET  (16)

/* SAAR MFP configurations */
static mfp_cfg_t saar_mfp_cfg[] __initdata = {
      /* LCD */
      GPIO23_LCD_DD0,
      GPIO24_LCD_DD1,
      GPIO25_LCD_DD2,
      GPIO26_LCD_DD3,
      GPIO27_LCD_DD4,
      GPIO28_LCD_DD5,
      GPIO29_LCD_DD6,
      GPIO44_LCD_DD7,
      GPIO21_LCD_CS,
      GPIO22_LCD_VSYNC,
      GPIO17_LCD_FCLK_RD,
      GPIO18_LCD_LCLK_A0,
      GPIO19_LCD_PCLK_WR,
      GPIO16_GPIO, /* LCD reset */

      /* Ethernet */
      DF_nCS1_nCS3,
      GPIO97_GPIO,
};

#define SAAR_ETH_PHYS   (0x14000000)

static struct resource smc91x_resources[] = {
      [0] = {
            .start      = (SAAR_ETH_PHYS + 0x300),
            .end  = (SAAR_ETH_PHYS + 0xfffff),
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO97)),
            .end  = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO97)),
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
      }
};

static struct smc91x_platdata saar_smc91x_info = {
      .flags      = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
};

static struct platform_device smc91x_device = {
      .name       = "smc91x",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(smc91x_resources),
      .resource   = smc91x_resources,
      .dev        = {
            .platform_data = &saar_smc91x_info,
      },
};

#if defined(CONFIG_FB_PXA) || (CONFIG_FB_PXA_MODULE)
static uint16_t lcd_power_on[] = {
      /* single frame */
      SMART_CMD_NOOP,
      SMART_CMD(0x00),
      SMART_DELAY(0),

      SMART_CMD_NOOP,
      SMART_CMD(0x00),
      SMART_DELAY(0),

      SMART_CMD_NOOP,
      SMART_CMD(0x00),
      SMART_DELAY(0),

      SMART_CMD_NOOP,
      SMART_CMD(0x00),
      SMART_DELAY(10),

      /* calibration control */
      SMART_CMD(0x00),
      SMART_CMD(0xA4),
      SMART_DAT(0x80),
      SMART_DAT(0x01),
      SMART_DELAY(150),

      /*Power-On Init sequence*/
      SMART_CMD(0x00),  /* output ctrl */
      SMART_CMD(0x01),
      SMART_DAT(0x01),
      SMART_DAT(0x00),
      SMART_CMD(0x00),  /* wave ctrl */
      SMART_CMD(0x02),
      SMART_DAT(0x07),
      SMART_DAT(0x00),
      SMART_CMD(0x00),
      SMART_CMD(0x03),  /* entry mode */
      SMART_DAT(0xD0),
      SMART_DAT(0x30),
      SMART_CMD(0x00),
      SMART_CMD(0x08),  /* display ctrl 2 */
      SMART_DAT(0x08),
      SMART_DAT(0x08),
      SMART_CMD(0x00),
      SMART_CMD(0x09),  /* display ctrl 3 */
      SMART_DAT(0x04),
      SMART_DAT(0x2F),
      SMART_CMD(0x00),
      SMART_CMD(0x0A),  /* display ctrl 4 */
      SMART_DAT(0x00),
      SMART_DAT(0x08),
      SMART_CMD(0x00),
      SMART_CMD(0x0D),  /* Frame Marker position */
      SMART_DAT(0x00),
      SMART_DAT(0x08),
      SMART_CMD(0x00),
      SMART_CMD(0x60),  /* Driver output control */
      SMART_DAT(0x27),
      SMART_DAT(0x00),
      SMART_CMD(0x00),
      SMART_CMD(0x61),  /* Base image display control */
      SMART_DAT(0x00),
      SMART_DAT(0x01),
      SMART_CMD(0x00),
      SMART_CMD(0x30),  /* Y settings 30h-3Dh */
      SMART_DAT(0x07),
      SMART_DAT(0x07),
      SMART_CMD(0x00),
      SMART_CMD(0x31),
      SMART_DAT(0x00),
      SMART_DAT(0x07),
      SMART_CMD(0x00),
      SMART_CMD(0x32),  /* Timing(3), ASW HOLD=0.5CLK */
      SMART_DAT(0x04),
      SMART_DAT(0x00),
      SMART_CMD(0x00),
      SMART_CMD(0x33),  /* Timing(4), CKV ST=0CLK, CKV ED=1CLK */
      SMART_DAT(0x03),
      SMART_DAT(0x03),
      SMART_CMD(0x00),
      SMART_CMD(0x34),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00),
      SMART_CMD(0x35),
      SMART_DAT(0x02),
      SMART_DAT(0x05),
      SMART_CMD(0x00),
      SMART_CMD(0x36),
      SMART_DAT(0x1F),
      SMART_DAT(0x1F),
      SMART_CMD(0x00),
      SMART_CMD(0x37),
      SMART_DAT(0x07),
      SMART_DAT(0x07),
      SMART_CMD(0x00),
      SMART_CMD(0x38),
      SMART_DAT(0x00),
      SMART_DAT(0x07),
      SMART_CMD(0x00),
      SMART_CMD(0x39),
      SMART_DAT(0x04),
      SMART_DAT(0x00),
      SMART_CMD(0x00),
      SMART_CMD(0x3A),
      SMART_DAT(0x03),
      SMART_DAT(0x03),
      SMART_CMD(0x00),
      SMART_CMD(0x3B),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00),
      SMART_CMD(0x3C),
      SMART_DAT(0x02),
      SMART_DAT(0x05),
      SMART_CMD(0x00),
      SMART_CMD(0x3D),
      SMART_DAT(0x1F),
      SMART_DAT(0x1F),
      SMART_CMD(0x00),  /* Display control 1 */
      SMART_CMD(0x07),
      SMART_DAT(0x00),
      SMART_DAT(0x01),
      SMART_CMD(0x00),  /* Power control 5 */
      SMART_CMD(0x17),
      SMART_DAT(0x00),
      SMART_DAT(0x01),
      SMART_CMD(0x00),  /* Power control 1 */
      SMART_CMD(0x10),
      SMART_DAT(0x10),
      SMART_DAT(0xB0),
      SMART_CMD(0x00),  /* Power control 2 */
      SMART_CMD(0x11),
      SMART_DAT(0x01),
      SMART_DAT(0x30),
      SMART_CMD(0x00),  /* Power control 3 */
      SMART_CMD(0x12),
      SMART_DAT(0x01),
      SMART_DAT(0x9E),
      SMART_CMD(0x00),  /* Power control 4 */
      SMART_CMD(0x13),
      SMART_DAT(0x17),
      SMART_DAT(0x00),
      SMART_CMD(0x00),  /* Power control 3 */
      SMART_CMD(0x12),
      SMART_DAT(0x01),
      SMART_DAT(0xBE),
      SMART_DELAY(100),

      /* display mode : 240*320 */
      SMART_CMD(0x00),  /* RAM address set(H) 0*/
      SMART_CMD(0x20),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00),  /* RAM address set(V)   4*/
      SMART_CMD(0x21),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00),  /* Start of Window RAM address set(H) 8*/
      SMART_CMD(0x50),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00),  /* End of Window RAM address set(H) 12*/
      SMART_CMD(0x51),
      SMART_DAT(0x00),
      SMART_DAT(0xEF),
      SMART_CMD(0x00),  /* Start of Window RAM address set(V) 16*/
      SMART_CMD(0x52),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00),  /* End of Window RAM address set(V) 20*/
      SMART_CMD(0x53),
      SMART_DAT(0x01),
      SMART_DAT(0x3F),
      SMART_CMD(0x00),  /* Panel interface control 1 */
      SMART_CMD(0x90),
      SMART_DAT(0x00),
      SMART_DAT(0x1A),
      SMART_CMD(0x00),  /* Panel interface control 2 */
      SMART_CMD(0x92),
      SMART_DAT(0x04),
      SMART_DAT(0x00),
      SMART_CMD(0x00),  /* Panel interface control 3 */
      SMART_CMD(0x93),
      SMART_DAT(0x00),
      SMART_DAT(0x05),
      SMART_DELAY(20),
};

static uint16_t lcd_panel_on[] = {
      SMART_CMD(0x00),
      SMART_CMD(0x07),
      SMART_DAT(0x00),
      SMART_DAT(0x21),
      SMART_DELAY(1),

      SMART_CMD(0x00),
      SMART_CMD(0x07),
      SMART_DAT(0x00),
      SMART_DAT(0x61),
      SMART_DELAY(100),

      SMART_CMD(0x00),
      SMART_CMD(0x07),
      SMART_DAT(0x01),
      SMART_DAT(0x73),
      SMART_DELAY(1),
};

static uint16_t lcd_panel_off[] = {
      SMART_CMD(0x00),
      SMART_CMD(0x07),
      SMART_DAT(0x00),
      SMART_DAT(0x72),
      SMART_DELAY(40),

      SMART_CMD(0x00),
      SMART_CMD(0x07),
      SMART_DAT(0x00),
      SMART_DAT(0x01),
      SMART_DELAY(1),

      SMART_CMD(0x00),
      SMART_CMD(0x07),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_DELAY(1),
};

static uint16_t lcd_power_off[] = {
      SMART_CMD(0x00),
      SMART_CMD(0x10),
      SMART_DAT(0x00),
      SMART_DAT(0x80),

      SMART_CMD(0x00),
      SMART_CMD(0x11),
      SMART_DAT(0x01),
      SMART_DAT(0x60),

      SMART_CMD(0x00),
      SMART_CMD(0x12),
      SMART_DAT(0x01),
      SMART_DAT(0xAE),
      SMART_DELAY(40),

      SMART_CMD(0x00),
      SMART_CMD(0x10),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
};

static uint16_t update_framedata[] = {
      /* set display ram: 240*320 */
      SMART_CMD(0x00), /* RAM address set(H) 0*/
      SMART_CMD(0x20),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00), /* RAM address set(V) 4*/
      SMART_CMD(0x21),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00), /* Start of Window RAM address set(H) 8 */
      SMART_CMD(0x50),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00), /* End of Window RAM address set(H) 12 */
      SMART_CMD(0x51),
      SMART_DAT(0x00),
      SMART_DAT(0xEF),
      SMART_CMD(0x00), /* Start of Window RAM address set(V) 16 */
      SMART_CMD(0x52),
      SMART_DAT(0x00),
      SMART_DAT(0x00),
      SMART_CMD(0x00), /* End of Window RAM address set(V) 20 */
      SMART_CMD(0x53),
      SMART_DAT(0x01),
      SMART_DAT(0x3F),

      /* wait for vsync cmd before transferring frame data */
      SMART_CMD_WAIT_FOR_VSYNC,

      /* write ram */
      SMART_CMD(0x00),
      SMART_CMD(0x22),

      /* write frame data */
      SMART_CMD_WRITE_FRAME,
};

static void ltm022a97a_lcd_power(int on, struct fb_var_screeninfo *var)
{
      static int pin_requested = 0;
      struct fb_info *info = container_of(var, struct fb_info, var);
      int err;

      if (!pin_requested) {
            err = gpio_request(GPIO_LCD_RESET, "lcd reset");
            if (err) {
                  pr_err("failed to request gpio for LCD reset\n");
                  return;
            }

            gpio_direction_output(GPIO_LCD_RESET, 0);
            pin_requested = 1;
      }

      if (on) {
            gpio_set_value(GPIO_LCD_RESET, 0); msleep(100);
            gpio_set_value(GPIO_LCD_RESET, 1); msleep(10);

            pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_power_on));
            pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_panel_on));
      } else {
            pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_panel_off));
            pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_power_off));
      }

      err = pxafb_smart_flush(info);
      if (err)
            pr_err("%s: timed out\n", __func__);
}

static void ltm022a97a_update(struct fb_info *info)
{
      pxafb_smart_queue(info, ARRAY_AND_SIZE(update_framedata));
      pxafb_smart_flush(info);
}

static struct pxafb_mode_info toshiba_ltm022a97a_modes[] = {
      [0] = {
            .xres             = 240,
            .yres             = 320,
            .bpp              = 16,
            .a0csrd_set_hld         = 30,
            .a0cswr_set_hld         = 30,
            .wr_pulse_width         = 30,
            .rd_pulse_width   = 30,
            .op_hold_time           = 30,
            .cmd_inh_time           = 60,

            /* L_LCLK_A0 and L_LCLK_RD active low */
            .sync             = FB_SYNC_HOR_HIGH_ACT |
                                FB_SYNC_VERT_HIGH_ACT,
      },
};

static struct pxafb_mach_info saar_lcd_info = {
      .modes                  = toshiba_ltm022a97a_modes,
      .num_modes        = 1,
      .lcd_conn         = LCD_SMART_PANEL_8BPP | LCD_PCLK_EDGE_FALL,
      .pxafb_lcd_power  = ltm022a97a_lcd_power,
      .smart_update           = ltm022a97a_update,
};

static void __init saar_init_lcd(void)
{
      set_pxa_fb_info(&saar_lcd_info);
}
#else
static inline void saar_init_lcd(void) {}
#endif

#if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
static struct da903x_subdev_info saar_da9034_subdevs[] = {
      [0] = {
            .name       = "da903x-backlight",
            .id         = DA9034_ID_WLED,
      },
};

static struct da903x_platform_data saar_da9034_info = {
      .num_subdevs      = ARRAY_SIZE(saar_da9034_subdevs),
      .subdevs    = saar_da9034_subdevs,
};

static struct i2c_board_info saar_i2c_info[] = {
      [0] = {
            .type       = "da9034",
            .addr       = 0x34,
            .platform_data    = &saar_da9034_info,
            .irq        = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO83)),
      },
};

static void __init saar_init_i2c(void)
{
      pxa_set_i2c_info(NULL);
      i2c_register_board_info(0, ARRAY_AND_SIZE(saar_i2c_info));
}
#else
static inline void saar_init_i2c(void) {}
#endif
static void __init saar_init(void)
{
      /* initialize MFP configurations */
      pxa3xx_mfp_config(ARRAY_AND_SIZE(saar_mfp_cfg));

      platform_device_register(&smc91x_device);

      saar_init_i2c();
      saar_init_lcd();
}

MACHINE_START(SAAR, "PXA930 Handheld Platform (aka SAAR)")
      /* Maintainer: Eric Miao <eric.miao@marvell.com> */
      .phys_io        = 0x40000000,
      .boot_params    = 0xa0000100,
      .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .map_io         = pxa_map_io,
      .init_irq       = pxa3xx_init_irq,
      .timer          = &pxa_timer,
      .init_machine   = saar_init,
MACHINE_END

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