saar.c

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/*
 *  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/i2c/pxa-i2c.h>
#include <linux/smc91x.h>
#include <linux/mfd/da903x.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/onenand.h>

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

#include <mach/pxa930.h>
#include <linux/platform_data/video-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,

    /* DFI */
    DF_INT_RnB_ND_INT_RnB,
    DF_nRE_nOE_ND_nRE,
    DF_nWE_ND_nWE,
    DF_CLE_nOE_ND_CLE,
    DF_nADV1_ALE_ND_ALE,
    DF_nADV2_ALE_nCS3,
    DF_nCS0_ND_nCS0,
    DF_IO0_ND_IO0,
    DF_IO1_ND_IO1,
    DF_IO2_ND_IO2,
    DF_IO3_ND_IO3,
    DF_IO4_ND_IO4,
    DF_IO5_ND_IO5,
    DF_IO6_ND_IO6,
    DF_IO7_ND_IO7,
    DF_IO8_ND_IO8,
    DF_IO9_ND_IO9,
    DF_IO10_ND_IO10,
    DF_IO11_ND_IO11,
    DF_IO12_ND_IO12,
    DF_IO13_ND_IO13,
    DF_IO14_ND_IO14,
    DF_IO15_ND_IO15,
};

#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  = PXA_GPIO_TO_IRQ(mfp_to_gpio(MFP_PIN_GPIO97)),
        .end    = PXA_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) || defined(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)
{
    pxa_set_fb_info(NULL, &saar_lcd_info);
}
#else
static inline void saar_init_lcd(void) {}
#endif

#if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
static struct da9034_backlight_pdata saar_da9034_backlight = {
    .output_current = 4,    /* 4mA */
};

static struct da903x_subdev_info saar_da9034_subdevs[] = {
    [0] = {
        .name       = "da903x-backlight",
        .id     = DA9034_ID_WLED,
        .platform_data  = &saar_da9034_backlight,
    },
};

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        = PXA_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

#if defined(CONFIG_MTD_ONENAND) || defined(CONFIG_MTD_ONENAND_MODULE)
static struct mtd_partition saar_onenand_partitions[] = {
    {
        .name       = "bootloader",
        .offset     = 0,
        .size       = SZ_1M,
        .mask_flags = MTD_WRITEABLE,
    }, {
        .name       = "reserved",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_128K,
        .mask_flags = MTD_WRITEABLE,
    }, {
        .name       = "reserved",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_8M,
        .mask_flags = MTD_WRITEABLE,
    }, {
        .name       = "kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = (SZ_2M + SZ_1M),
        .mask_flags = 0,
    }, {
        .name       = "filesystem",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_32M + SZ_16M,
        .mask_flags = 0,
    }
};

static struct onenand_platform_data saar_onenand_info = {
    .parts      = saar_onenand_partitions,
    .nr_parts   = ARRAY_SIZE(saar_onenand_partitions),
};

#define SMC_CS0_PHYS_BASE   (0x10000000)

static struct resource saar_resource_onenand[] = {
    [0] = {
        .start  = SMC_CS0_PHYS_BASE,
        .end    = SMC_CS0_PHYS_BASE + SZ_1M,
        .flags  = IORESOURCE_MEM,
    },
};

static struct platform_device saar_device_onenand = {
    .name       = "onenand-flash",
    .id     = -1,
    .dev        = {
        .platform_data  = &saar_onenand_info,
    },
    .resource   = saar_resource_onenand,
    .num_resources  = ARRAY_SIZE(saar_resource_onenand),
};

static void __init saar_init_onenand(void)
{
    platform_device_register(&saar_device_onenand);
}
#else
static void __init saar_init_onenand(void) {}
#endif

static void __init saar_init(void)
{
    /* initialize MFP configurations */
    pxa3xx_mfp_config(ARRAY_AND_SIZE(saar_mfp_cfg));

    pxa_set_ffuart_info(NULL);
    pxa_set_btuart_info(NULL);
    pxa_set_stuart_info(NULL);

    platform_device_register(&smc91x_device);
    saar_init_onenand();

    saar_init_i2c();
    saar_init_lcd();
}

MACHINE_START(SAAR, "PXA930 Handheld Platform (aka SAAR)")
    /* Maintainer: Eric Miao <[email protected]> */
    .atag_offset    = 0x100,
    .map_io         = pxa3xx_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq       = pxa3xx_init_irq,
    .handle_irq       = pxa3xx_handle_irq,
    .timer          = &pxa_timer,
    .init_machine   = saar_init,
    .restart    = pxa_restart,
MACHINE_END