board-h4.c

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/*
 * linux/arch/arm/mach-omap2/board-h4.c
 *
 * Copyright (C) 2005 Nokia Corporation
 * Author: Paul Mundt <[email protected]>
 *
 * Modified from mach-omap/omap1/board-generic.c
 *
 * 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/gpio.h>
#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/physmap.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/input.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/input/matrix_keypad.h>

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

#include <plat/menelaus.h>
#include <plat/dma.h>
#include <plat/gpmc.h>
#include "debug-devices.h"

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

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

#define H4_FLASH_CS 0
#define H4_SMC91X_CS    1

#define H4_ETHR_GPIO_IRQ        92

#if defined(CONFIG_KEYBOARD_MATRIX) || defined(CONFIG_KEYBOARD_MATRIX_MODULE)
static const uint32_t board_matrix_keys[] = {
    KEY(0, 0, KEY_LEFT),
    KEY(1, 0, KEY_RIGHT),
    KEY(2, 0, KEY_A),
    KEY(3, 0, KEY_B),
    KEY(4, 0, KEY_C),
    KEY(0, 1, KEY_DOWN),
    KEY(1, 1, KEY_UP),
    KEY(2, 1, KEY_E),
    KEY(3, 1, KEY_F),
    KEY(4, 1, KEY_G),
    KEY(0, 2, KEY_ENTER),
    KEY(1, 2, KEY_I),
    KEY(2, 2, KEY_J),
    KEY(3, 2, KEY_K),
    KEY(4, 2, KEY_3),
    KEY(0, 3, KEY_M),
    KEY(1, 3, KEY_N),
    KEY(2, 3, KEY_O),
    KEY(3, 3, KEY_P),
    KEY(4, 3, KEY_Q),
    KEY(0, 4, KEY_R),
    KEY(1, 4, KEY_4),
    KEY(2, 4, KEY_T),
    KEY(3, 4, KEY_U),
    KEY(4, 4, KEY_ENTER),
    KEY(0, 5, KEY_V),
    KEY(1, 5, KEY_W),
    KEY(2, 5, KEY_L),
    KEY(3, 5, KEY_S),
    KEY(4, 5, KEY_ENTER),
};

static const struct matrix_keymap_data board_keymap_data = {
    .keymap         = board_matrix_keys,
    .keymap_size        = ARRAY_SIZE(board_matrix_keys),
};

static unsigned int board_keypad_row_gpios[] = {
    88, 89, 124, 11, 6, 96
};

static unsigned int board_keypad_col_gpios[] = {
    90, 91, 100, 36, 12, 97, 98
};

static struct matrix_keypad_platform_data board_keypad_platform_data = {
    .keymap_data    = &board_keymap_data,
    .row_gpios  = board_keypad_row_gpios,
    .num_row_gpios  = ARRAY_SIZE(board_keypad_row_gpios),
    .col_gpios  = board_keypad_col_gpios,
    .num_col_gpios  = ARRAY_SIZE(board_keypad_col_gpios),
    .active_low = 1,

    .debounce_ms        = 20,
    .col_scan_delay_us  = 5,
};

static struct platform_device board_keyboard = {
    .name   = "matrix-keypad",
    .id = -1,
    .dev    = {
        .platform_data = &board_keypad_platform_data,
    },
};
static void __init board_mkp_init(void)
{
    omap_mux_init_gpio(88, OMAP_PULL_ENA | OMAP_PULL_UP);
    omap_mux_init_gpio(89, OMAP_PULL_ENA | OMAP_PULL_UP);
    omap_mux_init_gpio(124, OMAP_PULL_ENA | OMAP_PULL_UP);
    omap_mux_init_signal("mcbsp2_dr.gpio_11", OMAP_PULL_ENA | OMAP_PULL_UP);
    if (omap_has_menelaus()) {
        omap_mux_init_signal("sdrc_a14.gpio0",
            OMAP_PULL_ENA | OMAP_PULL_UP);
        omap_mux_init_signal("vlynq_rx0.gpio_15", 0);
        omap_mux_init_signal("gpio_98", 0);
        board_keypad_row_gpios[5] = 0;
        board_keypad_col_gpios[2] = 15;
        board_keypad_col_gpios[6] = 18;
    } else {
        omap_mux_init_signal("gpio_96", OMAP_PULL_ENA | OMAP_PULL_UP);
        omap_mux_init_signal("gpio_100", 0);
        omap_mux_init_signal("gpio_98", 0);
    }
    omap_mux_init_signal("gpio_90", 0);
    omap_mux_init_signal("gpio_91", 0);
    omap_mux_init_signal("gpio_36", 0);
    omap_mux_init_signal("mcbsp2_clkx.gpio_12", 0);
    omap_mux_init_signal("gpio_97", 0);

    platform_device_register(&board_keyboard);
}
#else
static inline void board_mkp_init(void)
{
}
#endif

static struct mtd_partition h4_partitions[] = {
    /* bootloader (U-Boot, etc) in first sector */
    {
          .name     = "bootloader",
          .offset       = 0,
          .size     = SZ_128K,
          .mask_flags   = MTD_WRITEABLE, /* force read-only */
    },
    /* bootloader params in the next sector */
    {
          .name     = "params",
          .offset       = MTDPART_OFS_APPEND,
          .size     = SZ_128K,
          .mask_flags   = 0,
    },
    /* kernel */
    {
          .name     = "kernel",
          .offset       = MTDPART_OFS_APPEND,
          .size     = SZ_2M,
          .mask_flags   = 0
    },
    /* file system */
    {
          .name     = "filesystem",
          .offset       = MTDPART_OFS_APPEND,
          .size     = MTDPART_SIZ_FULL,
          .mask_flags   = 0
    }
};

static struct physmap_flash_data h4_flash_data = {
    .width      = 2,
    .parts      = h4_partitions,
    .nr_parts   = ARRAY_SIZE(h4_partitions),
};

static struct resource h4_flash_resource = {
    .flags      = IORESOURCE_MEM,
};

static struct platform_device h4_flash_device = {
    .name       = "physmap-flash",
    .id     = 0,
    .dev        = {
        .platform_data  = &h4_flash_data,
    },
    .num_resources  = 1,
    .resource   = &h4_flash_resource,
};

static struct platform_device *h4_devices[] __initdata = {
    &h4_flash_device,
};

static struct panel_generic_dpi_data h4_panel_data = {
    .name           = "h4",
};

static struct omap_dss_device h4_lcd_device = {
    .name           = "lcd",
    .driver_name        = "generic_dpi_panel",
    .type           = OMAP_DISPLAY_TYPE_DPI,
    .phy.dpi.data_lines = 16,
    .data           = &h4_panel_data,
};

static struct omap_dss_device *h4_dss_devices[] = {
    &h4_lcd_device,
};

static struct omap_dss_board_info h4_dss_data = {
    .num_devices    = ARRAY_SIZE(h4_dss_devices),
    .devices    = h4_dss_devices,
    .default_device = &h4_lcd_device,
};

/* 2420 Sysboot setup (2430 is different) */
static u32 get_sysboot_value(void)
{
    return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
        (OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
         OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
         OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
}

/* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 *
 * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 *  correctly.  The macro needs to look at production_id not just hawkeye.
 */
static u32 is_gpmc_muxed(void)
{
    u32 mux;
    mux = get_sysboot_value();
    if ((mux & 0xF) == 0xd)
        return 1;   /* NAND config (could be either) */
    if (mux & 0x2)      /* if mux'ed */
        return 1;
    else
        return 0;
}

static inline void __init h4_init_debug(void)
{
    int eth_cs;
    unsigned long cs_mem_base;
    unsigned int muxed, rate;
    struct clk *gpmc_fck;

    eth_cs  = H4_SMC91X_CS;

    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);
    clk_disable_unprepare(gpmc_fck);
    clk_put(gpmc_fck);

    if (is_gpmc_muxed())
        muxed = 0x200;
    else
        muxed = 0;

    /* Make sure CS1 timings are correct */
    gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
              0x00011000 | muxed);

    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(eth_cs, SZ_16M, &cs_mem_base) < 0) {
        printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
        goto out;
    }

    udelay(100);

    omap_mux_init_gpio(92, 0);
    if (debug_card_init(cs_mem_base, H4_ETHR_GPIO_IRQ) < 0)
        gpmc_cs_free(eth_cs);

out:
    clk_disable_unprepare(gpmc_fck);
    clk_put(gpmc_fck);
}

static void __init h4_init_flash(void)
{
    unsigned long base;

    if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
        printk("Can't request GPMC CS for flash\n");
        return;
    }
    h4_flash_resource.start = base;
    h4_flash_resource.end   = base + SZ_64M - 1;
}

static struct at24_platform_data m24c01 = {
    .byte_len   = SZ_1K / 8,
    .page_size  = 16,
};

static struct i2c_board_info __initdata h4_i2c_board_info[] = {
    {
        I2C_BOARD_INFO("isp1301_omap", 0x2d),
    },
    {   /* EEPROM on mainboard */
        I2C_BOARD_INFO("24c01", 0x52),
        .platform_data  = &m24c01,
    },
    {   /* EEPROM on cpu card */
        I2C_BOARD_INFO("24c01", 0x57),
        .platform_data  = &m24c01,
    },
};

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

static void __init omap_h4_init(void)
{
    omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAF);

    /*
     * 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.
     */

    board_mkp_init();
    h4_i2c_board_info[0].irq = gpio_to_irq(125);
    i2c_register_board_info(1, h4_i2c_board_info,
            ARRAY_SIZE(h4_i2c_board_info));

    platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
    omap_serial_init();
    omap_sdrc_init(NULL, NULL);
    h4_init_flash();

    omap_display_init(&h4_dss_data);
}

MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
    /* Maintainer: Paul Mundt <[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_h4_init,
    .init_late  = omap2420_init_late,
    .timer      = &omap2_timer,
    .restart    = omap_prcm_restart,
MACHINE_END