board-apollon.c

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/*
 * linux/arch/arm/mach-omap2/board-apollon.c
 *
 * Copyright (C) 2005,2006 Samsung Electronics
 * Author: Kyungmin Park <[email protected]>
 *
 * Modified from mach-omap/omap2/board-h4.c
 *
 * Code for apollon OMAP2 board. Should work on many OMAP2 systems where
 * the bootloader passes the board-specific data to the kernel.
 * Do not put any board specific code to this file; create a new machine
 * type if you need custom low-level initializations.
 *
 * 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/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/onenand.h>
#include <linux/delay.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/smc91x.h>
#include <linux/gpio.h>

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

#include <plat/led.h>
#include "common.h"
#include <plat/gpmc.h>

#include <video/omapdss.h>
#include <video/omap-panel-generic-dpi.h>

#include "mux.h"
#include "control.h"

/* LED & Switch macros */
#define LED0_GPIO13     13
#define LED1_GPIO14     14
#define LED2_GPIO15     15
#define SW_ENTER_GPIO16     16
#define SW_UP_GPIO17        17
#define SW_DOWN_GPIO58      58

#define APOLLON_FLASH_CS    0
#define APOLLON_ETH_CS      1
#define APOLLON_ETHR_GPIO_IRQ   74

static struct mtd_partition apollon_partitions[] = {
    {
        .name       = "X-Loader + U-Boot",
        .offset     = 0,
        .size       = SZ_128K,
        .mask_flags = MTD_WRITEABLE,
    },
    {
        .name       = "params",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_128K,
    },
    {
        .name       = "kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_2M,
    },
    {
        .name       = "rootfs",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_16M,
    },
    {
        .name       = "filesystem00",
        .offset     = MTDPART_OFS_APPEND,
        .size       = SZ_32M,
    },
    {
        .name       = "filesystem01",
        .offset     = MTDPART_OFS_APPEND,
        .size       = MTDPART_SIZ_FULL,
    },
};

static struct onenand_platform_data apollon_flash_data = {
    .parts      = apollon_partitions,
    .nr_parts   = ARRAY_SIZE(apollon_partitions),
};

static struct resource apollon_flash_resource[] = {
    [0] = {
        .flags      = IORESOURCE_MEM,
    },
};

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

static void __init apollon_flash_init(void)
{
    unsigned long base;

    if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
        printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
        return;
    }
    apollon_flash_resource[0].start = base;
    apollon_flash_resource[0].end   = base + SZ_128K - 1;
}

static struct smc91x_platdata appolon_smc91x_info = {
    .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
    .leda   = RPC_LED_100_10,
    .ledb   = RPC_LED_TX_RX,
};

static struct resource apollon_smc91x_resources[] = {
    [0] = {
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
    },
};

static struct platform_device apollon_smc91x_device = {
    .name       = "smc91x",
    .id     = -1,
    .dev    = {
        .platform_data  = &appolon_smc91x_info,
    },
    .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
    .resource   = apollon_smc91x_resources,
};

static struct omap_led_config apollon_led_config[] = {
    {
        .cdev   = {
            .name   = "apollon:led0",
        },
        .gpio   = LED0_GPIO13,
    },
    {
        .cdev   = {
            .name   = "apollon:led1",
        },
        .gpio   = LED1_GPIO14,
    },
    {
        .cdev   = {
            .name   = "apollon:led2",
        },
        .gpio   = LED2_GPIO15,
    },
};

static struct omap_led_platform_data apollon_led_data = {
    .nr_leds    = ARRAY_SIZE(apollon_led_config),
    .leds       = apollon_led_config,
};

static struct platform_device apollon_led_device = {
    .name       = "omap-led",
    .id     = -1,
    .dev        = {
        .platform_data  = &apollon_led_data,
    },
};

static struct platform_device *apollon_devices[] __initdata = {
    &apollon_onenand_device,
    &apollon_smc91x_device,
    &apollon_led_device,
};

static inline void __init apollon_init_smc91x(void)
{
    unsigned long base;

    unsigned int rate;
    struct clk *gpmc_fck;
    int eth_cs;
    int err;

    gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
    if (IS_ERR(gpmc_fck)) {
        WARN_ON(1);
        return;
    }

    clk_prepare_enable(gpmc_fck);
    rate = clk_get_rate(gpmc_fck);

    eth_cs = APOLLON_ETH_CS;

    /* Make sure CS1 timings are correct */
    gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);

    if (rate >= 160000000) {
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
    } else if (rate >= 130000000) {
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
    } else {/* rate = 100000000 */
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
    }

    if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
        printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
        goto out;
    }
    apollon_smc91x_resources[0].start = base + 0x300;
    apollon_smc91x_resources[0].end   = base + 0x30f;
    udelay(100);

    omap_mux_init_gpio(APOLLON_ETHR_GPIO_IRQ, 0);
    err = gpio_request_one(APOLLON_ETHR_GPIO_IRQ, GPIOF_IN, "SMC91x irq");
    if (err) {
        printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
            APOLLON_ETHR_GPIO_IRQ);
        gpmc_cs_free(APOLLON_ETH_CS);
    }
out:
    clk_disable_unprepare(gpmc_fck);
    clk_put(gpmc_fck);
}

static struct panel_generic_dpi_data apollon_panel_data = {
    .name           = "apollon",
};

static struct omap_dss_device apollon_lcd_device = {
    .name           = "lcd",
    .driver_name        = "generic_dpi_panel",
    .type           = OMAP_DISPLAY_TYPE_DPI,
    .phy.dpi.data_lines = 18,
    .data           = &apollon_panel_data,
};

static struct omap_dss_device *apollon_dss_devices[] = {
    &apollon_lcd_device,
};

static struct omap_dss_board_info apollon_dss_data = {
    .num_devices    = ARRAY_SIZE(apollon_dss_devices),
    .devices    = apollon_dss_devices,
    .default_device = &apollon_lcd_device,
};

static struct gpio apollon_gpio_leds[] __initdata = {
    { LED0_GPIO13, GPIOF_OUT_INIT_LOW, "LED0" }, /* LED0 - AA10 */
    { LED1_GPIO14, GPIOF_OUT_INIT_LOW, "LED1" }, /* LED1 - AA6  */
    { LED2_GPIO15, GPIOF_OUT_INIT_LOW, "LED2" }, /* LED2 - AA4  */
};

static void __init apollon_led_init(void)
{
    omap_mux_init_signal("vlynq_clk.gpio_13", 0);
    omap_mux_init_signal("vlynq_rx1.gpio_14", 0);
    omap_mux_init_signal("vlynq_rx0.gpio_15", 0);

    gpio_request_array(apollon_gpio_leds, ARRAY_SIZE(apollon_gpio_leds));
}

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
    { .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static void __init omap_apollon_init(void)
{
    u32 v;

    omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC);

    apollon_init_smc91x();
    apollon_led_init();
    apollon_flash_init();

    /* REVISIT: where's the correct place */
    omap_mux_init_signal("sys_nirq", OMAP_PULL_ENA | OMAP_PULL_UP);

    /* LCD PWR_EN */
    omap_mux_init_signal("mcbsp2_dr.gpio_11", OMAP_PULL_ENA | OMAP_PULL_UP);

    /* Use Internal loop-back in MMC/SDIO Module Input Clock selection */
    v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
    v |= (1 << 24);
    omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);

    /*
     * Make sure the serial ports are muxed on at this point.
     * You have to mux them off in device drivers later on
     * if not needed.
     */
    apollon_smc91x_resources[1].start = gpio_to_irq(APOLLON_ETHR_GPIO_IRQ);
    apollon_smc91x_resources[1].end = gpio_to_irq(APOLLON_ETHR_GPIO_IRQ);
    platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
    omap_serial_init();
    omap_sdrc_init(NULL, NULL);
    omap_display_init(&apollon_dss_data);
}

MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
    /* Maintainer: Kyungmin Park <[email protected]> */
    .atag_offset    = 0x100,
    .reserve    = omap_reserve,
    .map_io     = omap242x_map_io,
    .init_early = omap2420_init_early,
    .init_irq   = omap2_init_irq,
    .handle_irq = omap2_intc_handle_irq,
    .init_machine   = omap_apollon_init,
    .init_late  = omap2420_init_late,
    .timer      = &omap2_timer,
    .restart    = omap_prcm_restart,
MACHINE_END