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board-cm-t3517.c

/*
 * linux/arch/arm/mach-omap2/board-cm-t3517.c
 *
 * Support for the CompuLab CM-T3517 modules
 *
 * Copyright (C) 2010 CompuLab, Ltd.
 * Author: Igor Grinberg <grinberg@compulab.co.il>
 *
 * 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 <plat/board.h>
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/nand.h>
#include <plat/gpmc.h>

#include <mach/am35xx.h>

#include "mux.h"
#include "control.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      = INT_35XX_HECC0_IRQ,
            .end  = INT_35XX_HECC0_IRQ,
            .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(RTC_CS_EN_GPIO, "rtc cs en");
      if (err) {
            pr_err("CM-T3517: rtc cs en gpio request failed: %d\n", err);
            return;
      }

      gpio_direction_output(RTC_CS_EN_GPIO, 1);

      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 ehci_hcd_omap_platform_data cm_t3517_ehci_pdata __initdata = {
      .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
      .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
      .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,

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

static int cm_t3517_init_usbh(void)
{
      int err;

      err = gpio_request(USB_HUB_RESET_GPIO, "usb hub rst");
      if (err) {
            pr_err("CM-T3517: usb hub rst gpio request failed: %d\n", err);
      } else {
            gpio_direction_output(USB_HUB_RESET_GPIO, 0);
            udelay(10);
            gpio_set_value(USB_HUB_RESET_GPIO, 1);
            msleep(1);
      }

      usb_ehci_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)
#define NAND_BLOCK_SIZE       SZ_128K

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),
      .dma_channel            = -1, /* disable DMA in OMAP NAND driver */
      .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

static struct omap_board_config_kernel cm_t3517_config[] __initdata = {
};

static void __init cm_t3517_init_irq(void)
{
      omap_board_config = cm_t3517_config;
      omap_board_config_size = ARRAY_SIZE(cm_t3517_config);

      omap2_init_common_infrastructure();
      omap2_init_common_devices(NULL, NULL);
      omap_init_irq();
}

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 },
};

static void __init cm_t3517_init(void)
{
      omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
      omap_serial_init();
      cm_t3517_init_leds();
      cm_t3517_init_nand();
      cm_t3517_init_rtc();
      cm_t3517_init_usbh();
      cm_t3517_init_hecc();
}

MACHINE_START(CM_T3517, "Compulab CM-T3517")
      .boot_params      = 0x80000100,
      .map_io           = omap3_map_io,
      .reserve        = omap_reserve,
      .init_irq   = cm_t3517_init_irq,
      .init_machine     = cm_t3517_init,
      .timer            = &omap_timer,
MACHINE_END

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