mach-pcm038.c

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/*
 * Copyright 2007 Robert Schwebel <[email protected]>, Pengutronix
 * Copyright (C) 2008 Juergen Beisert ([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/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/io.h>
#include <linux/mtd/plat-ram.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
#include <linux/irq.h>
#include <linux/gpio.h>

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

#include <mach/board-pcm038.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx27.h>
#include <mach/ulpi.h>

#include "devices-imx27.h"

static const int pcm038_pins[] __initconst = {
    /* UART1 */
    PE12_PF_UART1_TXD,
    PE13_PF_UART1_RXD,
    PE14_PF_UART1_CTS,
    PE15_PF_UART1_RTS,
    /* UART2 */
    PE3_PF_UART2_CTS,
    PE4_PF_UART2_RTS,
    PE6_PF_UART2_TXD,
    PE7_PF_UART2_RXD,
    /* UART3 */
    PE8_PF_UART3_TXD,
    PE9_PF_UART3_RXD,
    PE10_PF_UART3_CTS,
    PE11_PF_UART3_RTS,
    /* 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,
    /* I2C2 */
    PC5_PF_I2C2_SDA,
    PC6_PF_I2C2_SCL,
    /* SPI1 */
    PD25_PF_CSPI1_RDY,
    PD29_PF_CSPI1_SCLK,
    PD30_PF_CSPI1_MISO,
    PD31_PF_CSPI1_MOSI,
    /* SSI1 */
    PC20_PF_SSI1_FS,
    PC21_PF_SSI1_RXD,
    PC22_PF_SSI1_TXD,
    PC23_PF_SSI1_CLK,
    /* SSI4 */
    PC16_PF_SSI4_FS,
    PC17_PF_SSI4_RXD,
    PC18_PF_SSI4_TXD,
    PC19_PF_SSI4_CLK,
    /* USB host */
    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,
};

/*
 * Phytec's PCM038 comes with 2MiB battery buffered SRAM,
 * 16 bit width
 */

static struct platdata_mtd_ram pcm038_sram_data = {
    .bankwidth = 2,
};

static struct resource pcm038_sram_resource = {
    .start = MX27_CS1_BASE_ADDR,
    .end   = MX27_CS1_BASE_ADDR + 512 * 1024 - 1,
    .flags = IORESOURCE_MEM,
};

static struct platform_device pcm038_sram_mtd_device = {
    .name = "mtd-ram",
    .id = 0,
    .dev = {
        .platform_data = &pcm038_sram_data,
    },
    .num_resources = 1,
    .resource = &pcm038_sram_resource,
};

/*
 * Phytec's phyCORE-i.MX27 comes with 32MiB flash,
 * 16 bit width
 */
static struct physmap_flash_data pcm038_flash_data = {
    .width = 2,
};

static struct resource pcm038_flash_resource = {
    .start = 0xc0000000,
    .end   = 0xc1ffffff,
    .flags = IORESOURCE_MEM,
};

static struct platform_device pcm038_nor_mtd_device = {
    .name = "physmap-flash",
    .id = 0,
    .dev = {
        .platform_data = &pcm038_flash_data,
    },
    .num_resources = 1,
    .resource = &pcm038_flash_resource,
};

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

static const struct mxc_nand_platform_data
pcm038_nand_board_info __initconst = {
    .width = 1,
    .hw_ecc = 1,
};

static struct platform_device *platform_devices[] __initdata = {
    &pcm038_nor_mtd_device,
    &pcm038_sram_mtd_device,
};

/* On pcm038 there's a sram attached to CS1, we enable the chipselect here and
 * setup other stuffs to access the sram. */
static void __init pcm038_init_sram(void)
{
    __raw_writel(0x0000d843, MX27_IO_ADDRESS(MX27_WEIM_CSCRxU(1)));
    __raw_writel(0x22252521, MX27_IO_ADDRESS(MX27_WEIM_CSCRxL(1)));
    __raw_writel(0x22220a00, MX27_IO_ADDRESS(MX27_WEIM_CSCRxA(1)));
}

static const struct imxi2c_platform_data pcm038_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 pcm038_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 int pcm038_spi_cs[] = {GPIO_PORTD + 28};

static const struct spi_imx_master pcm038_spi0_data __initconst = {
    .chipselect = pcm038_spi_cs,
    .num_chipselect = ARRAY_SIZE(pcm038_spi_cs),
};

static struct regulator_consumer_supply sdhc1_consumers[] = {
    {
        .dev_name = "mxc-mmc.1",
        .supply = "sdhc_vcc",
    },
};

static struct regulator_init_data sdhc1_data = {
    .constraints = {
        .min_uV = 3000000,
        .max_uV = 3400000,
        .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
            REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
        .valid_modes_mask = REGULATOR_MODE_NORMAL |
            REGULATOR_MODE_FAST,
        .always_on = 0,
        .boot_on = 0,
    },
    .num_consumer_supplies = ARRAY_SIZE(sdhc1_consumers),
    .consumer_supplies = sdhc1_consumers,
};

static struct regulator_consumer_supply cam_consumers[] = {
    {
        .dev_name = NULL,
        .supply = "imx_cam_vcc",
    },
};

static struct regulator_init_data cam_data = {
    .constraints = {
        .min_uV = 3000000,
        .max_uV = 3400000,
        .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
            REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
        .valid_modes_mask = REGULATOR_MODE_NORMAL |
            REGULATOR_MODE_FAST,
        .always_on = 0,
        .boot_on = 0,
    },
    .num_consumer_supplies = ARRAY_SIZE(cam_consumers),
    .consumer_supplies = cam_consumers,
};

static struct mc13xxx_regulator_init_data pcm038_regulators[] = {
    {
        .id = MC13783_REG_VCAM,
        .init_data = &cam_data,
    }, {
        .id = MC13783_REG_VMMC1,
        .init_data = &sdhc1_data,
    },
};

static struct mc13xxx_platform_data pcm038_pmic = {
    .regulators = {
        .regulators = pcm038_regulators,
        .num_regulators = ARRAY_SIZE(pcm038_regulators),
    },
    .flags = MC13XXX_USE_ADC | MC13XXX_USE_TOUCHSCREEN,
};

static struct spi_board_info pcm038_spi_board_info[] __initdata = {
    {
        .modalias = "mc13783",
        /* irq number is run-time assigned */
        .max_speed_hz = 300000,
        .bus_num = 0,
        .chip_select = 0,
        .platform_data = &pcm038_pmic,
        .mode = SPI_CS_HIGH,
    }
};

static int pcm038_usbh2_init(struct platform_device *pdev)
{
    return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
            MXC_EHCI_INTERFACE_DIFF_UNI);
}

static const struct mxc_usbh_platform_data usbh2_pdata __initconst = {
    .init   = pcm038_usbh2_init,
    .portsc = MXC_EHCI_MODE_ULPI,
};

static void __init pcm038_init(void)
{
    imx27_soc_init();

    mxc_gpio_setup_multiple_pins(pcm038_pins, ARRAY_SIZE(pcm038_pins),
            "PCM038");

    pcm038_init_sram();

    imx27_add_imx_uart0(&uart_pdata);
    imx27_add_imx_uart1(&uart_pdata);
    imx27_add_imx_uart2(&uart_pdata);

    mxc_gpio_mode(PE16_AF_OWIRE);
    imx27_add_mxc_nand(&pcm038_nand_board_info);

    /* only the i2c master 1 is used on this CPU card */
    i2c_register_board_info(1, pcm038_i2c_devices,
                ARRAY_SIZE(pcm038_i2c_devices));

    imx27_add_imx_i2c(1, &pcm038_i2c1_data);

    /* PE18 for user-LED D40 */
    mxc_gpio_mode(GPIO_PORTE | 18 | GPIO_GPIO | GPIO_OUT);

    mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);

    /* MC13783 IRQ */
    mxc_gpio_mode(GPIO_PORTB | 23 | GPIO_GPIO | GPIO_IN);

    imx27_add_spi_imx0(&pcm038_spi0_data);
    pcm038_spi_board_info[0].irq = gpio_to_irq(IMX_GPIO_NR(2, 23));
    spi_register_board_info(pcm038_spi_board_info,
                ARRAY_SIZE(pcm038_spi_board_info));

    imx27_add_mxc_ehci_hs(2, &usbh2_pdata);

    imx27_add_fec(NULL);
    platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
    imx27_add_imx2_wdt();
    imx27_add_mxc_w1();

#ifdef CONFIG_MACH_PCM970_BASEBOARD
    pcm970_baseboard_init();
#endif
}

static void __init pcm038_timer_init(void)
{
    mx27_clocks_init(26000000);
}

static struct sys_timer pcm038_timer = {
    .init = pcm038_timer_init,
};

MACHINE_START(PCM038, "phyCORE-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,
    .timer = &pcm038_timer,
    .init_machine = pcm038_init,
    .restart    = mxc_restart,
MACHINE_END