board-cm-t3517.c

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/*
 * linux/arch/arm/mach-omap2/board-cm-t3517.c
 *
 * Support for the CompuLab CM-T3517 modules
 *
 * Copyright (C) 2010 CompuLab, Ltd.
 * Author: Igor Grinberg <[email protected]>
 *
 * 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.
 *
 * 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 St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/rtc-v3020.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/can/platform/ti_hecc.h>

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

#include "common.h"
#include <plat/usb.h>
#include <linux/platform_data/mtd-nand-omap2.h>
#include <plat/gpmc.h>

#include "am35xx.h"

#include "mux.h"
#include "control.h"
#include "common-board-devices.h"
#include "am35xx-emac.h"

#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static struct gpio_led cm_t3517_leds[] = {
    [0] = {
        .gpio           = 186,
        .name           = "cm-t3517:green",
        .default_trigger    = "heartbeat",
        .active_low     = 0,
    },
};

static struct gpio_led_platform_data cm_t3517_led_pdata = {
    .num_leds   = ARRAY_SIZE(cm_t3517_leds),
    .leds       = cm_t3517_leds,
};

static struct platform_device cm_t3517_led_device = {
    .name       = "leds-gpio",
    .id     = -1,
    .dev        = {
        .platform_data  = &cm_t3517_led_pdata,
    },
};

static void __init cm_t3517_init_leds(void)
{
    platform_device_register(&cm_t3517_led_device);
}
#else
static inline void cm_t3517_init_leds(void) {}
#endif

#if defined(CONFIG_CAN_TI_HECC) || defined(CONFIG_CAN_TI_HECC_MODULE)
static struct resource cm_t3517_hecc_resources[] = {
    {
        .start  = AM35XX_IPSS_HECC_BASE,
        .end    = AM35XX_IPSS_HECC_BASE + SZ_16K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = 24 + OMAP_INTC_START,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct ti_hecc_platform_data cm_t3517_hecc_pdata = {
    .scc_hecc_offset    = AM35XX_HECC_SCC_HECC_OFFSET,
    .scc_ram_offset     = AM35XX_HECC_SCC_RAM_OFFSET,
    .hecc_ram_offset    = AM35XX_HECC_RAM_OFFSET,
    .mbx_offset     = AM35XX_HECC_MBOX_OFFSET,
    .int_line       = AM35XX_HECC_INT_LINE,
    .version        = AM35XX_HECC_VERSION,
};

static struct platform_device cm_t3517_hecc_device = {
    .name       = "ti_hecc",
    .id     = 1,
    .num_resources  = ARRAY_SIZE(cm_t3517_hecc_resources),
    .resource   = cm_t3517_hecc_resources,
    .dev        = {
        .platform_data  = &cm_t3517_hecc_pdata,
    },
};

static void cm_t3517_init_hecc(void)
{
    platform_device_register(&cm_t3517_hecc_device);
}
#else
static inline void cm_t3517_init_hecc(void) {}
#endif

#if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
#define RTC_IO_GPIO     (153)
#define RTC_WR_GPIO     (154)
#define RTC_RD_GPIO     (53)
#define RTC_CS_GPIO     (163)
#define RTC_CS_EN_GPIO      (160)

struct v3020_platform_data cm_t3517_v3020_pdata = {
    .use_gpio   = 1,
    .gpio_cs    = RTC_CS_GPIO,
    .gpio_wr    = RTC_WR_GPIO,
    .gpio_rd    = RTC_RD_GPIO,
    .gpio_io    = RTC_IO_GPIO,
};

static struct platform_device cm_t3517_rtc_device = {
    .name       = "v3020",
    .id     = -1,
    .dev        = {
        .platform_data = &cm_t3517_v3020_pdata,
    }
};

static void __init cm_t3517_init_rtc(void)
{
    int err;

    err = gpio_request_one(RTC_CS_EN_GPIO, GPIOF_OUT_INIT_HIGH,
                   "rtc cs en");
    if (err) {
        pr_err("CM-T3517: rtc cs en gpio request failed: %d\n", err);
        return;
    }

    platform_device_register(&cm_t3517_rtc_device);
}
#else
static inline void cm_t3517_init_rtc(void) {}
#endif

#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
#define HSUSB1_RESET_GPIO   (146)
#define HSUSB2_RESET_GPIO   (147)
#define USB_HUB_RESET_GPIO  (152)

static struct usbhs_omap_board_data cm_t3517_ehci_pdata __initdata = {
    .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
    .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
    .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,

    .phy_reset  = true,
    .reset_gpio_port[0]  = HSUSB1_RESET_GPIO,
    .reset_gpio_port[1]  = HSUSB2_RESET_GPIO,
    .reset_gpio_port[2]  = -EINVAL,
};

static int __init cm_t3517_init_usbh(void)
{
    int err;

    err = gpio_request_one(USB_HUB_RESET_GPIO, GPIOF_OUT_INIT_LOW,
                   "usb hub rst");
    if (err) {
        pr_err("CM-T3517: usb hub rst gpio request failed: %d\n", err);
    } else {
        udelay(10);
        gpio_set_value(USB_HUB_RESET_GPIO, 1);
        msleep(1);
    }

    usbhs_init(&cm_t3517_ehci_pdata);

    return 0;
}
#else
static inline int cm_t3517_init_usbh(void)
{
    return 0;
}
#endif

#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
static struct mtd_partition cm_t3517_nand_partitions[] = {
    {
        .name           = "xloader",
        .offset         = 0,            /* Offset = 0x00000 */
        .size           = 4 * NAND_BLOCK_SIZE,
        .mask_flags     = MTD_WRITEABLE
    },
    {
        .name           = "uboot",
        .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
        .size           = 15 * NAND_BLOCK_SIZE,
    },
    {
        .name           = "uboot environment",
        .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
        .size           = 2 * NAND_BLOCK_SIZE,
    },
    {
        .name           = "linux",
        .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x2A0000 */
        .size           = 32 * NAND_BLOCK_SIZE,
    },
    {
        .name           = "rootfs",
        .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x6A0000 */
        .size           = MTDPART_SIZ_FULL,
    },
};

static struct omap_nand_platform_data cm_t3517_nand_data = {
    .parts          = cm_t3517_nand_partitions,
    .nr_parts       = ARRAY_SIZE(cm_t3517_nand_partitions),
    .cs         = 0,
};

static void __init cm_t3517_init_nand(void)
{
    if (gpmc_nand_init(&cm_t3517_nand_data) < 0)
        pr_err("CM-T3517: NAND initialization failed\n");
}
#else
static inline void cm_t3517_init_nand(void) {}
#endif

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
    /* GPIO186 - Green LED */
    OMAP3_MUX(SYS_CLKOUT2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),

    /* RTC GPIOs: */
    /* IO - GPIO153 */
    OMAP3_MUX(MCBSP4_DR, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
    /* WR# - GPIO154 */
    OMAP3_MUX(MCBSP4_DX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
    /* RD# - GPIO53 */
    OMAP3_MUX(GPMC_NCS2, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
    /* CS# - GPIO163 */
    OMAP3_MUX(UART3_CTS_RCTX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
    /* CS EN - GPIO160 */
    OMAP3_MUX(MCBSP_CLKS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),

    /* HSUSB1 RESET */
    OMAP3_MUX(UART2_TX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
    /* HSUSB2 RESET */
    OMAP3_MUX(UART2_RX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
    /* CM-T3517 USB HUB nRESET */
    OMAP3_MUX(MCBSP4_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),

    { .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static void __init cm_t3517_init(void)
{
    omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
    omap_serial_init();
    omap_sdrc_init(NULL, NULL);
    cm_t3517_init_leds();
    cm_t3517_init_nand();
    cm_t3517_init_rtc();
    cm_t3517_init_usbh();
    cm_t3517_init_hecc();
    am35xx_emac_init(AM35XX_DEFAULT_MDIO_FREQUENCY, 1);
}

MACHINE_START(CM_T3517, "Compulab CM-T3517")
    .atag_offset    = 0x100,
    .reserve        = omap_reserve,
    .map_io     = omap3_map_io,
    .init_early = am35xx_init_early,
    .init_irq   = omap3_init_irq,
    .handle_irq = omap3_intc_handle_irq,
    .init_machine   = cm_t3517_init,
    .init_late  = am35xx_init_late,
    .timer      = &omap3_timer,
    .restart    = omap_prcm_restart,
MACHINE_END