board-omap3logic.c

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/*
 * linux/arch/arm/mach-omap2/board-omap3logic.c
 *
 * Copyright (C) 2010 Li-Pro.Net
 * Stephan Linz <[email protected]>
 *
 * Copyright (C) 2010-2012 Logic Product Development, Inc.
 * Peter Barada <[email protected]>
 * Ashwin BIhari <[email protected]>
 *
 * Modified from Beagle, EVM, and RX51
 *
 * 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/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/gpio.h>

#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>

#include <linux/i2c/twl.h>
#include <linux/mmc/host.h>

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

#include "gpmc-smsc911x.h"
#include <plat/gpmc.h>
#include <plat/sdrc.h>
#include <plat/usb.h>

#include "common.h"
#include "mux.h"
#include "hsmmc.h"
#include "control.h"
#include "common-board-devices.h"

#define OMAP3LOGIC_SMSC911X_CS          1

#define OMAP3530_LV_SOM_MMC_GPIO_CD     110
#define OMAP3530_LV_SOM_MMC_GPIO_WP     126
#define OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ   152

#define OMAP3_TORPEDO_MMC_GPIO_CD       127
#define OMAP3_TORPEDO_SMSC911X_GPIO_IRQ     129

static struct regulator_consumer_supply omap3logic_vmmc1_supply[] = {
    REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data omap3logic_vmmc1 = {
    .constraints = {
        .name           = "VMMC1",
        .min_uV         = 1850000,
        .max_uV         = 3150000,
        .valid_modes_mask   = REGULATOR_MODE_NORMAL
                    | REGULATOR_MODE_STANDBY,
        .valid_ops_mask     = REGULATOR_CHANGE_VOLTAGE
                    | REGULATOR_CHANGE_MODE
                    | REGULATOR_CHANGE_STATUS,
    },
    .num_consumer_supplies  = ARRAY_SIZE(omap3logic_vmmc1_supply),
    .consumer_supplies      = omap3logic_vmmc1_supply,
};

static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
    .use_leds   = true,
    .pullups    = BIT(1),
    .pulldowns  = BIT(2)  | BIT(6)  | BIT(7)  | BIT(8)
            | BIT(13) | BIT(15) | BIT(16) | BIT(17),
};

static struct twl4030_usb_data omap3logic_usb_data = {
    .usb_mode   = T2_USB_MODE_ULPI,
};


static struct twl4030_platform_data omap3logic_twldata = {
    /* platform_data for children goes here */
    .gpio       = &omap3logic_gpio_data,
    .vmmc1      = &omap3logic_vmmc1,
    .usb        = &omap3logic_usb_data,
};

static int __init omap3logic_i2c_init(void)
{
    omap3_pmic_init("twl4030", &omap3logic_twldata);
    return 0;
}

static struct omap2_hsmmc_info __initdata board_mmc_info[] = {
    {
        .name       = "external",
        .mmc        = 1,
        .caps       = MMC_CAP_4_BIT_DATA,
        .gpio_cd    = -EINVAL,
        .gpio_wp    = -EINVAL,
    },
    {}      /* Terminator */
};

static void __init board_mmc_init(void)
{
    if (machine_is_omap3530_lv_som()) {
        /* OMAP3530 LV SOM board */
        board_mmc_info[0].gpio_cd = OMAP3530_LV_SOM_MMC_GPIO_CD;
        board_mmc_info[0].gpio_wp = OMAP3530_LV_SOM_MMC_GPIO_WP;
        omap_mux_init_signal("gpio_110", OMAP_PIN_OUTPUT);
        omap_mux_init_signal("gpio_126", OMAP_PIN_OUTPUT);
    } else if (machine_is_omap3_torpedo()) {
        /* OMAP3 Torpedo board */
        board_mmc_info[0].gpio_cd = OMAP3_TORPEDO_MMC_GPIO_CD;
        omap_mux_init_signal("gpio_127", OMAP_PIN_OUTPUT);
    } else {
        /* unsupported board */
        printk(KERN_ERR "%s(): unknown machine type\n", __func__);
        return;
    }

    omap_hsmmc_init(board_mmc_info);
}

static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
    .cs             = OMAP3LOGIC_SMSC911X_CS,
    .gpio_irq       = -EINVAL,
    .gpio_reset     = -EINVAL,
};

/* TODO/FIXME (comment by Peter Barada, LogicPD):
 * Fix the PBIAS voltage for Torpedo MMC1 pins that
 * are used for other needs (IRQs, etc).            */
static void omap3torpedo_fix_pbias_voltage(void)
{
    u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
    u32 reg;

    if (machine_is_omap3_torpedo())
    {
        /* Set the bias for the pin */
        reg = omap_ctrl_readl(control_pbias_offset);

        reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
        omap_ctrl_writel(reg, control_pbias_offset);

        /* 100ms delay required for PBIAS configuration */
        msleep(100);

        reg |= OMAP343X_PBIASLITEVMODE1;
        reg |= OMAP343X_PBIASLITEPWRDNZ1;
        omap_ctrl_writel(reg | 0x300, control_pbias_offset);
    }
}

static inline void __init board_smsc911x_init(void)
{
    if (machine_is_omap3530_lv_som()) {
        /* OMAP3530 LV SOM board */
        board_smsc911x_data.gpio_irq =
                    OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
        omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
    } else if (machine_is_omap3_torpedo()) {
        /* OMAP3 Torpedo board */
        board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
        omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
    } else {
        /* unsupported board */
        printk(KERN_ERR "%s(): unknown machine type\n", __func__);
        return;
    }

    gpmc_smsc911x_init(&board_smsc911x_data);
}

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
    /* mUSB */
    OMAP3_MUX(HSUSB0_CLK, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_STP, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT),
    OMAP3_MUX(HSUSB0_DIR, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_NXT, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA0, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA1, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA2, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA3, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA4, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA5, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA6, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
    OMAP3_MUX(HSUSB0_DATA7, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),

    { .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static struct regulator_consumer_supply dummy_supplies[] = {
    REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
    REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
};

static void __init omap3logic_init(void)
{
    regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
    omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
    omap3torpedo_fix_pbias_voltage();
    omap3logic_i2c_init();
    omap_serial_init();
    omap_sdrc_init(NULL, NULL);
    board_mmc_init();
    board_smsc911x_init();

    usb_musb_init(NULL);

    /* Ensure SDRC pins are mux'd for self-refresh */
    omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
    omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
}

MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
    .atag_offset    = 0x100,
    .reserve    = omap_reserve,
    .map_io     = omap3_map_io,
    .init_early = omap35xx_init_early,
    .init_irq   = omap3_init_irq,
    .handle_irq = omap3_intc_handle_irq,
    .init_machine   = omap3logic_init,
    .init_late  = omap35xx_init_late,
    .timer      = &omap3_timer,
    .restart    = omap_prcm_restart,
MACHINE_END

MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
    .atag_offset    = 0x100,
    .reserve    = omap_reserve,
    .map_io     = omap3_map_io,
    .init_early = omap35xx_init_early,
    .init_irq   = omap3_init_irq,
    .handle_irq = omap3_intc_handle_irq,
    .init_machine   = omap3logic_init,
    .init_late  = omap35xx_init_late,
    .timer      = &omap3_timer,
    .restart    = omap_prcm_restart,
MACHINE_END