mach-pca100.c

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/*
 * Copyright 2007 Robert Schwebel <[email protected]>, Pengutronix
 * Copyright (C) 2009 Sascha Hauer ([email protected])
 *
 * 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/platform_device.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/dma-mapping.h>
#include <linux/spi/spi.h>
#include <linux/spi/eeprom.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>

#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx27.h>
#include <asm/mach/time.h>
#include <mach/ulpi.h>

#include "devices-imx27.h"

#define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
#define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
#define SPI1_SS0 (GPIO_PORTD + 28)
#define SPI1_SS1 (GPIO_PORTD + 27)
#define SD2_CD (GPIO_PORTC + 29)

static const int pca100_pins[] __initconst = {
    /* UART1 */
    PE12_PF_UART1_TXD,
    PE13_PF_UART1_RXD,
    PE14_PF_UART1_CTS,
    PE15_PF_UART1_RTS,
    /* SDHC */
    PB4_PF_SD2_D0,
    PB5_PF_SD2_D1,
    PB6_PF_SD2_D2,
    PB7_PF_SD2_D3,
    PB8_PF_SD2_CMD,
    PB9_PF_SD2_CLK,
    SD2_CD | GPIO_GPIO | GPIO_IN,
    /* FEC */
    PD0_AIN_FEC_TXD0,
    PD1_AIN_FEC_TXD1,
    PD2_AIN_FEC_TXD2,
    PD3_AIN_FEC_TXD3,
    PD4_AOUT_FEC_RX_ER,
    PD5_AOUT_FEC_RXD1,
    PD6_AOUT_FEC_RXD2,
    PD7_AOUT_FEC_RXD3,
    PD8_AF_FEC_MDIO,
    PD9_AIN_FEC_MDC,
    PD10_AOUT_FEC_CRS,
    PD11_AOUT_FEC_TX_CLK,
    PD12_AOUT_FEC_RXD0,
    PD13_AOUT_FEC_RX_DV,
    PD14_AOUT_FEC_RX_CLK,
    PD15_AOUT_FEC_COL,
    PD16_AIN_FEC_TX_ER,
    PF23_AIN_FEC_TX_EN,
    /* SSI1 */
    PC20_PF_SSI1_FS,
    PC21_PF_SSI1_RXD,
    PC22_PF_SSI1_TXD,
    PC23_PF_SSI1_CLK,
    /* onboard I2C */
    PC5_PF_I2C2_SDA,
    PC6_PF_I2C2_SCL,
    /* external I2C */
    PD17_PF_I2C_DATA,
    PD18_PF_I2C_CLK,
    /* SPI1 */
    PD25_PF_CSPI1_RDY,
    PD29_PF_CSPI1_SCLK,
    PD30_PF_CSPI1_MISO,
    PD31_PF_CSPI1_MOSI,
    /* OTG */
    OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
    PC7_PF_USBOTG_DATA5,
    PC8_PF_USBOTG_DATA6,
    PC9_PF_USBOTG_DATA0,
    PC10_PF_USBOTG_DATA2,
    PC11_PF_USBOTG_DATA1,
    PC12_PF_USBOTG_DATA4,
    PC13_PF_USBOTG_DATA3,
    PE0_PF_USBOTG_NXT,
    PE1_PF_USBOTG_STP,
    PE2_PF_USBOTG_DIR,
    PE24_PF_USBOTG_CLK,
    PE25_PF_USBOTG_DATA7,
    /* USBH2 */
    USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
    PA0_PF_USBH2_CLK,
    PA1_PF_USBH2_DIR,
    PA2_PF_USBH2_DATA7,
    PA3_PF_USBH2_NXT,
    PA4_PF_USBH2_STP,
    PD19_AF_USBH2_DATA4,
    PD20_AF_USBH2_DATA3,
    PD21_AF_USBH2_DATA6,
    PD22_AF_USBH2_DATA0,
    PD23_AF_USBH2_DATA2,
    PD24_AF_USBH2_DATA1,
    PD26_AF_USBH2_DATA5,
    /* display */
    PA5_PF_LSCLK,
    PA6_PF_LD0,
    PA7_PF_LD1,
    PA8_PF_LD2,
    PA9_PF_LD3,
    PA10_PF_LD4,
    PA11_PF_LD5,
    PA12_PF_LD6,
    PA13_PF_LD7,
    PA14_PF_LD8,
    PA15_PF_LD9,
    PA16_PF_LD10,
    PA17_PF_LD11,
    PA18_PF_LD12,
    PA19_PF_LD13,
    PA20_PF_LD14,
    PA21_PF_LD15,
    PA22_PF_LD16,
    PA23_PF_LD17,
    PA26_PF_PS,
    PA28_PF_HSYNC,
    PA29_PF_VSYNC,
    PA31_PF_OE_ACD,
    /* free GPIO */
    GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN, /* GPIO0_IRQ */
    GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN, /* GPIO1_IRQ */
    GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN, /* GPIO2_IRQ */
};

static const struct imxuart_platform_data uart_pdata __initconst = {
    .flags = IMXUART_HAVE_RTSCTS,
};

static const struct mxc_nand_platform_data
pca100_nand_board_info __initconst = {
    .width = 1,
    .hw_ecc = 1,
};

static const struct imxi2c_platform_data pca100_i2c1_data __initconst = {
    .bitrate = 100000,
};

static struct at24_platform_data board_eeprom = {
    .byte_len = 4096,
    .page_size = 32,
    .flags = AT24_FLAG_ADDR16,
};

static struct i2c_board_info pca100_i2c_devices[] = {
    {
        I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
        .platform_data = &board_eeprom,
    }, {
        I2C_BOARD_INFO("pcf8563", 0x51),
    }, {
        I2C_BOARD_INFO("lm75", 0x4a),
    }
};

static struct spi_eeprom at25320 = {
    .name       = "at25320an",
    .byte_len   = 4096,
    .page_size  = 32,
    .flags      = EE_ADDR2,
};

static struct spi_board_info pca100_spi_board_info[] __initdata = {
    {
        .modalias = "at25",
        .max_speed_hz = 30000,
        .bus_num = 0,
        .chip_select = 1,
        .platform_data = &at25320,
    },
};

static int pca100_spi_cs[] = {SPI1_SS0, SPI1_SS1};

static const struct spi_imx_master pca100_spi0_data __initconst = {
    .chipselect = pca100_spi_cs,
    .num_chipselect = ARRAY_SIZE(pca100_spi_cs),
};

static void pca100_ac97_warm_reset(struct snd_ac97 *ac97)
{
    mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);
    gpio_set_value(GPIO_PORTC + 20, 1);
    udelay(2);
    gpio_set_value(GPIO_PORTC + 20, 0);
    mxc_gpio_mode(PC20_PF_SSI1_FS);
    msleep(2);
}

static void pca100_ac97_cold_reset(struct snd_ac97 *ac97)
{
    mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);  /* FS */
    gpio_set_value(GPIO_PORTC + 20, 0);
    mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT);  /* TX */
    gpio_set_value(GPIO_PORTC + 22, 0);
    mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT);  /* reset */
    gpio_set_value(GPIO_PORTC + 28, 0);
    udelay(10);
    gpio_set_value(GPIO_PORTC + 28, 1);
    mxc_gpio_mode(PC20_PF_SSI1_FS);
    mxc_gpio_mode(PC22_PF_SSI1_TXD);
    msleep(2);
}

static const struct imx_ssi_platform_data pca100_ssi_pdata __initconst = {
    .ac97_reset     = pca100_ac97_cold_reset,
    .ac97_warm_reset    = pca100_ac97_warm_reset,
    .flags          = IMX_SSI_USE_AC97,
};

static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
        void *data)
{
    int ret;

    ret = request_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), detect_irq,
              IRQF_DISABLED | IRQF_TRIGGER_FALLING,
              "imx-mmc-detect", data);
    if (ret)
        printk(KERN_ERR
            "pca100: Failed to reuest irq for sd/mmc detection\n");

    return ret;
}

static void pca100_sdhc2_exit(struct device *dev, void *data)
{
    free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
}

static const struct imxmmc_platform_data sdhc_pdata __initconst = {
    .init = pca100_sdhc2_init,
    .exit = pca100_sdhc2_exit,
};

static int otg_phy_init(struct platform_device *pdev)
{
    gpio_set_value(OTG_PHY_CS_GPIO, 0);

    mdelay(10);

    return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}

static struct mxc_usbh_platform_data otg_pdata __initdata = {
    .init   = otg_phy_init,
    .portsc = MXC_EHCI_MODE_ULPI,
};

static int usbh2_phy_init(struct platform_device *pdev)
{
    gpio_set_value(USBH2_PHY_CS_GPIO, 0);

    mdelay(10);

    return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}

static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
    .init   = usbh2_phy_init,
    .portsc = MXC_EHCI_MODE_ULPI,
};

static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
    .operating_mode = FSL_USB2_DR_DEVICE,
    .phy_mode       = FSL_USB2_PHY_ULPI,
};

static bool otg_mode_host __initdata;

static int __init pca100_otg_mode(char *options)
{
    if (!strcmp(options, "host"))
        otg_mode_host = true;
    else if (!strcmp(options, "device"))
        otg_mode_host = false;
    else
        pr_info("otg_mode neither \"host\" nor \"device\". "
            "Defaulting to device\n");
    return 1;
}
__setup("otg_mode=", pca100_otg_mode);

/* framebuffer info */
static struct imx_fb_videomode pca100_fb_modes[] = {
    {
        .mode = {
            .name       = "EMERGING-ETV570G0DHU",
            .refresh    = 60,
            .xres       = 640,
            .yres       = 480,
            .pixclock   = 39722, /* in ps (25.175 MHz) */
            .hsync_len  = 30,
            .left_margin    = 114,
            .right_margin   = 16,
            .vsync_len  = 3,
            .upper_margin   = 32,
            .lower_margin   = 0,
        },
        /*
         * TFT
         * Pixel pol active high
         * HSYNC active low
         * VSYNC active low
         * use HSYNC for ACD count
         * line clock disable while idle
         * always enable line clock even if no data
         */
        .pcr = 0xf0c08080,
        .bpp = 16,
    },
};

static const struct imx_fb_platform_data pca100_fb_data __initconst = {
    .mode = pca100_fb_modes,
    .num_modes = ARRAY_SIZE(pca100_fb_modes),

    .pwmr       = 0x00A903FF,
    .lscr1      = 0x00120300,
    .dmacr      = 0x00020010,
};

static void __init pca100_init(void)
{
    int ret;

    imx27_soc_init();

    ret = mxc_gpio_setup_multiple_pins(pca100_pins,
            ARRAY_SIZE(pca100_pins), "PCA100");
    if (ret)
        printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);

    imx27_add_imx_ssi(0, &pca100_ssi_pdata);

    imx27_add_imx_uart0(&uart_pdata);

    imx27_add_mxc_mmc(1, &sdhc_pdata);

    imx27_add_mxc_nand(&pca100_nand_board_info);

    /* only the i2c master 1 is used on this CPU card */
    i2c_register_board_info(1, pca100_i2c_devices,
                ARRAY_SIZE(pca100_i2c_devices));

    imx27_add_imx_i2c(1, &pca100_i2c1_data);

    mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_IN);
    mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_IN);
    spi_register_board_info(pca100_spi_board_info,
                ARRAY_SIZE(pca100_spi_board_info));
    imx27_add_spi_imx0(&pca100_spi0_data);

    gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
    gpio_direction_output(OTG_PHY_CS_GPIO, 1);
    gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
    gpio_direction_output(USBH2_PHY_CS_GPIO, 1);

    if (otg_mode_host) {
        otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
                ULPI_OTG_DRVVBUS_EXT);

        if (otg_pdata.otg)
            imx27_add_mxc_ehci_otg(&otg_pdata);
    } else {
        gpio_set_value(OTG_PHY_CS_GPIO, 0);
        imx27_add_fsl_usb2_udc(&otg_device_pdata);
    }

    usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
                ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);

    if (usbh2_pdata.otg)
        imx27_add_mxc_ehci_hs(2, &usbh2_pdata);

    imx27_add_imx_fb(&pca100_fb_data);

    imx27_add_fec(NULL);
    imx27_add_imx2_wdt();
    imx27_add_mxc_w1();
}

static void __init pca100_timer_init(void)
{
    mx27_clocks_init(26000000);
}

static struct sys_timer pca100_timer = {
    .init = pca100_timer_init,
};

MACHINE_START(PCA100, "phyCARD-i.MX27")
    .atag_offset = 0x100,
    .map_io = mx27_map_io,
    .init_early = imx27_init_early,
    .init_irq = mx27_init_irq,
    .handle_irq = imx27_handle_irq,
    .init_machine = pca100_init,
    .timer = &pca100_timer,
    .restart    = mxc_restart,
MACHINE_END