mach-armadillo5x0.c

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/*
 * armadillo5x0.c
 *
 * Copyright 2009 Alberto Panizzo <[email protected]>
 * updates in http://alberdroid.blogspot.com/
 *
 * Based on Atmark Techno, Inc. armadillo 500 BSP 2008
 * Based on mx31ads.c and pcm037.c Great Work!
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#include <linux/types.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/smsc911x.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/io.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/delay.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>

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

#include <mach/common.h>
#include <mach/iomux-mx3.h>
#include <mach/ulpi.h>

#include "devices-imx31.h"
#include "crmregs-imx3.h"

static int armadillo5x0_pins[] = {
    /* UART1 */
    MX31_PIN_CTS1__CTS1,
    MX31_PIN_RTS1__RTS1,
    MX31_PIN_TXD1__TXD1,
    MX31_PIN_RXD1__RXD1,
    /* UART2 */
    MX31_PIN_CTS2__CTS2,
    MX31_PIN_RTS2__RTS2,
    MX31_PIN_TXD2__TXD2,
    MX31_PIN_RXD2__RXD2,
    /* LAN9118_IRQ */
    IOMUX_MODE(MX31_PIN_GPIO1_0, IOMUX_CONFIG_GPIO),
    /* SDHC1 */
    MX31_PIN_SD1_DATA3__SD1_DATA3,
    MX31_PIN_SD1_DATA2__SD1_DATA2,
    MX31_PIN_SD1_DATA1__SD1_DATA1,
    MX31_PIN_SD1_DATA0__SD1_DATA0,
    MX31_PIN_SD1_CLK__SD1_CLK,
    MX31_PIN_SD1_CMD__SD1_CMD,
    /* Framebuffer */
    MX31_PIN_LD0__LD0,
    MX31_PIN_LD1__LD1,
    MX31_PIN_LD2__LD2,
    MX31_PIN_LD3__LD3,
    MX31_PIN_LD4__LD4,
    MX31_PIN_LD5__LD5,
    MX31_PIN_LD6__LD6,
    MX31_PIN_LD7__LD7,
    MX31_PIN_LD8__LD8,
    MX31_PIN_LD9__LD9,
    MX31_PIN_LD10__LD10,
    MX31_PIN_LD11__LD11,
    MX31_PIN_LD12__LD12,
    MX31_PIN_LD13__LD13,
    MX31_PIN_LD14__LD14,
    MX31_PIN_LD15__LD15,
    MX31_PIN_LD16__LD16,
    MX31_PIN_LD17__LD17,
    MX31_PIN_VSYNC3__VSYNC3,
    MX31_PIN_HSYNC__HSYNC,
    MX31_PIN_FPSHIFT__FPSHIFT,
    MX31_PIN_DRDY0__DRDY0,
    IOMUX_MODE(MX31_PIN_LCS1, IOMUX_CONFIG_GPIO), /*ADV7125_PSAVE*/
    /* I2C2 */
    MX31_PIN_CSPI2_MOSI__SCL,
    MX31_PIN_CSPI2_MISO__SDA,
    /* OTG */
    MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
    MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
    MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
    MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
    MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
    MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
    MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
    MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
    MX31_PIN_USBOTG_CLK__USBOTG_CLK,
    MX31_PIN_USBOTG_DIR__USBOTG_DIR,
    MX31_PIN_USBOTG_NXT__USBOTG_NXT,
    MX31_PIN_USBOTG_STP__USBOTG_STP,
    /* USB host 2 */
    IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_STXD3, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_SRXD3, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_SCK3, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_SFS3, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_STXD6, IOMUX_CONFIG_FUNC),
    IOMUX_MODE(MX31_PIN_SRXD6, IOMUX_CONFIG_FUNC),
};

/* USB */

#define OTG_RESET IOMUX_TO_GPIO(MX31_PIN_STXD4)
#define USBH2_RESET IOMUX_TO_GPIO(MX31_PIN_SCK6)
#define USBH2_CS IOMUX_TO_GPIO(MX31_PIN_GPIO1_3)

#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
            PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

static int usbotg_init(struct platform_device *pdev)
{
    int err;

    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);

    /* Chip already enabled by hardware */
    /* OTG phy reset*/
    err = gpio_request(OTG_RESET, "USB-OTG-RESET");
    if (err) {
        pr_err("Failed to request the usb otg reset gpio\n");
        return err;
    }

    err = gpio_direction_output(OTG_RESET, 1/*HIGH*/);
    if (err) {
        pr_err("Failed to reset the usb otg phy\n");
        goto otg_free_reset;
    }

    gpio_set_value(OTG_RESET, 0/*LOW*/);
    mdelay(5);
    gpio_set_value(OTG_RESET, 1/*HIGH*/);
    mdelay(10);

    return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
            MXC_EHCI_INTERFACE_DIFF_UNI);

otg_free_reset:
    gpio_free(OTG_RESET);
    return err;
}

static int usbh2_init(struct platform_device *pdev)
{
    int err;

    mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);

    mxc_iomux_set_gpr(MUX_PGP_UH2, true);


    /* Enable the chip */
    err = gpio_request(USBH2_CS, "USB-H2-CS");
    if (err) {
        pr_err("Failed to request the usb host 2 CS gpio\n");
        return err;
    }

    err = gpio_direction_output(USBH2_CS, 0/*Enabled*/);
    if (err) {
        pr_err("Failed to drive the usb host 2 CS gpio\n");
        goto h2_free_cs;
    }

    /* H2 phy reset*/
    err = gpio_request(USBH2_RESET, "USB-H2-RESET");
    if (err) {
        pr_err("Failed to request the usb host 2 reset gpio\n");
        goto h2_free_cs;
    }

    err = gpio_direction_output(USBH2_RESET, 1/*HIGH*/);
    if (err) {
        pr_err("Failed to reset the usb host 2 phy\n");
        goto h2_free_reset;
    }

    gpio_set_value(USBH2_RESET, 0/*LOW*/);
    mdelay(5);
    gpio_set_value(USBH2_RESET, 1/*HIGH*/);
    mdelay(10);

    return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
            MXC_EHCI_INTERFACE_DIFF_UNI);

h2_free_reset:
    gpio_free(USBH2_RESET);
h2_free_cs:
    gpio_free(USBH2_CS);
    return err;
}

static struct mxc_usbh_platform_data usbotg_pdata __initdata = {
    .init   = usbotg_init,
    .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};

static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
    .init   = usbh2_init,
    .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};

/* RTC over I2C*/
#define ARMADILLO5X0_RTC_GPIO   IOMUX_TO_GPIO(MX31_PIN_SRXD4)

static struct i2c_board_info armadillo5x0_i2c_rtc = {
    I2C_BOARD_INFO("s35390a", 0x30),
};

/* GPIO BUTTONS */
static struct gpio_keys_button armadillo5x0_buttons[] = {
    {
        .code       = KEY_ENTER, /*28*/
        .gpio       = IOMUX_TO_GPIO(MX31_PIN_SCLK0),
        .active_low = 1,
        .desc       = "menu",
        .wakeup     = 1,
    }, {
        .code       = KEY_BACK, /*158*/
        .gpio       = IOMUX_TO_GPIO(MX31_PIN_SRST0),
        .active_low = 1,
        .desc       = "back",
        .wakeup     = 1,
    }
};

static const struct gpio_keys_platform_data
        armadillo5x0_button_data __initconst = {
    .buttons    = armadillo5x0_buttons,
    .nbuttons   = ARRAY_SIZE(armadillo5x0_buttons),
};

/*
 * NAND Flash
 */
static const struct mxc_nand_platform_data
armadillo5x0_nand_board_info __initconst = {
    .width      = 1,
    .hw_ecc     = 1,
};

/*
 * MTD NOR Flash
 */
static struct mtd_partition armadillo5x0_nor_flash_partitions[] = {
    {
        .name       = "nor.bootloader",
        .offset     = 0x00000000,
        .size       = 4*32*1024,
    }, {
        .name       = "nor.kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 16*128*1024,
    }, {
        .name       = "nor.userland",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 110*128*1024,
    }, {
        .name       = "nor.config",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 1*128*1024,
    },
};

static const struct physmap_flash_data
        armadillo5x0_nor_flash_pdata __initconst = {
    .width      = 2,
    .parts      = armadillo5x0_nor_flash_partitions,
    .nr_parts   = ARRAY_SIZE(armadillo5x0_nor_flash_partitions),
};

static const struct resource armadillo5x0_nor_flash_resource __initconst = {
    .flags      = IORESOURCE_MEM,
    .start      = MX31_CS0_BASE_ADDR,
    .end        = MX31_CS0_BASE_ADDR + SZ_64M - 1,
};

/*
 * FB support
 */
static const struct fb_videomode fb_modedb[] = {
    {   /* 640x480 @ 60 Hz */
        .name       = "CRT-VGA",
        .refresh    = 60,
        .xres       = 640,
        .yres       = 480,
        .pixclock   = 39721,
        .left_margin    = 35,
        .right_margin   = 115,
        .upper_margin   = 43,
        .lower_margin   = 1,
        .hsync_len  = 10,
        .vsync_len  = 1,
        .sync       = FB_SYNC_OE_ACT_HIGH,
        .vmode      = FB_VMODE_NONINTERLACED,
        .flag       = 0,
    }, {/* 800x600 @ 56 Hz */
        .name       = "CRT-SVGA",
        .refresh    = 56,
        .xres       = 800,
        .yres       = 600,
        .pixclock   = 30000,
        .left_margin    = 30,
        .right_margin   = 108,
        .upper_margin   = 13,
        .lower_margin   = 10,
        .hsync_len  = 10,
        .vsync_len  = 1,
        .sync       = FB_SYNC_OE_ACT_HIGH | FB_SYNC_HOR_HIGH_ACT |
                  FB_SYNC_VERT_HIGH_ACT,
        .vmode      = FB_VMODE_NONINTERLACED,
        .flag       = 0,
    },
};

static struct mx3fb_platform_data mx3fb_pdata __initdata = {
    .name       = "CRT-VGA",
    .mode       = fb_modedb,
    .num_modes  = ARRAY_SIZE(fb_modedb),
};

/*
 * SDHC 1
 * MMC support
 */
static int armadillo5x0_sdhc1_get_ro(struct device *dev)
{
    return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_ATA_RESET_B));
}

static int armadillo5x0_sdhc1_init(struct device *dev,
                   irq_handler_t detect_irq, void *data)
{
    int ret;
    int gpio_det, gpio_wp;

    gpio_det = IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK);
    gpio_wp = IOMUX_TO_GPIO(MX31_PIN_ATA_RESET_B);

    ret = gpio_request(gpio_det, "sdhc-card-detect");
    if (ret)
        return ret;

    gpio_direction_input(gpio_det);

    ret = gpio_request(gpio_wp, "sdhc-write-protect");
    if (ret)
        goto err_gpio_free;

    gpio_direction_input(gpio_wp);

    /* When supported the trigger type have to be BOTH */
    ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK)),
              detect_irq,
              IRQF_DISABLED | IRQF_TRIGGER_FALLING,
              "sdhc-detect", data);

    if (ret)
        goto err_gpio_free_2;

    return 0;

err_gpio_free_2:
    gpio_free(gpio_wp);

err_gpio_free:
    gpio_free(gpio_det);

    return ret;

}

static void armadillo5x0_sdhc1_exit(struct device *dev, void *data)
{
    free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK)), data);
    gpio_free(IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK));
    gpio_free(IOMUX_TO_GPIO(MX31_PIN_ATA_RESET_B));
}

static const struct imxmmc_platform_data sdhc_pdata __initconst = {
    .get_ro = armadillo5x0_sdhc1_get_ro,
    .init = armadillo5x0_sdhc1_init,
    .exit = armadillo5x0_sdhc1_exit,
};

/*
 * SMSC 9118
 * Network support
 */
static struct resource armadillo5x0_smc911x_resources[] = {
    {
        .start  = MX31_CS3_BASE_ADDR,
        .end    = MX31_CS3_BASE_ADDR + SZ_32M - 1,
        .flags  = IORESOURCE_MEM,
    }, {
        /* irq number is run-time assigned */
        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
    },
};

static struct smsc911x_platform_config smsc911x_info = {
    .flags      = SMSC911X_USE_16BIT,
    .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
    .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
};

static struct platform_device armadillo5x0_smc911x_device = {
    .name           = "smsc911x",
    .id             = -1,
    .num_resources  = ARRAY_SIZE(armadillo5x0_smc911x_resources),
    .resource       = armadillo5x0_smc911x_resources,
    .dev            = {
        .platform_data = &smsc911x_info,
    },
};

/* UART device data */
static const struct imxuart_platform_data uart_pdata __initconst = {
    .flags = IMXUART_HAVE_RTSCTS,
};

static struct platform_device *devices[] __initdata = {
    &armadillo5x0_smc911x_device,
};

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

/*
 * Perform board specific initializations
 */
static void __init armadillo5x0_init(void)
{
    imx31_soc_init();

    mxc_iomux_setup_multiple_pins(armadillo5x0_pins,
            ARRAY_SIZE(armadillo5x0_pins), "armadillo5x0");

    regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));

    armadillo5x0_smc911x_resources[1].start =
            gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_0));
    armadillo5x0_smc911x_resources[1].end =
            gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_0));
    platform_add_devices(devices, ARRAY_SIZE(devices));
    imx_add_gpio_keys(&armadillo5x0_button_data);
    imx31_add_imx_i2c1(NULL);

    /* Register UART */
    imx31_add_imx_uart0(&uart_pdata);
    imx31_add_imx_uart1(&uart_pdata);

    /* SMSC9118 IRQ pin */
    gpio_direction_input(MX31_PIN_GPIO1_0);

    /* Register SDHC */
    imx31_add_mxc_mmc(0, &sdhc_pdata);

    /* Register FB */
    imx31_add_ipu_core();
    imx31_add_mx3_sdc_fb(&mx3fb_pdata);

    /* Register NOR Flash */
    platform_device_register_resndata(NULL, "physmap-flash", -1,
            &armadillo5x0_nor_flash_resource, 1,
            &armadillo5x0_nor_flash_pdata,
            sizeof(armadillo5x0_nor_flash_pdata));

    /* Register NAND Flash */
    imx31_add_mxc_nand(&armadillo5x0_nand_board_info);

    /* set NAND page size to 2k if not configured via boot mode pins */
    __raw_writel(__raw_readl(mx3_ccm_base + MXC_CCM_RCSR) |
                    (1 << 30), mx3_ccm_base + MXC_CCM_RCSR);

    /* RTC */
    /* Get RTC IRQ and register the chip */
    if (gpio_request(ARMADILLO5X0_RTC_GPIO, "rtc") == 0) {
        if (gpio_direction_input(ARMADILLO5X0_RTC_GPIO) == 0)
            armadillo5x0_i2c_rtc.irq = gpio_to_irq(ARMADILLO5X0_RTC_GPIO);
        else
            gpio_free(ARMADILLO5X0_RTC_GPIO);
    }
    if (armadillo5x0_i2c_rtc.irq == 0)
        pr_warning("armadillo5x0_init: failed to get RTC IRQ\n");
    i2c_register_board_info(1, &armadillo5x0_i2c_rtc, 1);

    /* USB */

    usbotg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
            ULPI_OTG_DRVVBUS_EXT);
    if (usbotg_pdata.otg)
        imx31_add_mxc_ehci_otg(&usbotg_pdata);
    usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
            ULPI_OTG_DRVVBUS_EXT);
    if (usbh2_pdata.otg)
        imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
}

static void __init armadillo5x0_timer_init(void)
{
    mx31_clocks_init(26000000);
}

static struct sys_timer armadillo5x0_timer = {
    .init   = armadillo5x0_timer_init,
};

MACHINE_START(ARMADILLO5X0, "Armadillo-500")
    /* Maintainer: Alberto Panizzo  */
    .atag_offset = 0x100,
    .map_io = mx31_map_io,
    .init_early = imx31_init_early,
    .init_irq = mx31_init_irq,
    .handle_irq = imx31_handle_irq,
    .timer = &armadillo5x0_timer,
    .init_machine = armadillo5x0_init,
    .restart    = mxc_restart,
MACHINE_END