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mach-armadillo5x0.c

/*
 * armadillo5x0.c
 *
 * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
 * 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/gpio_keys.h>
#include <linux/i2c.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/delay.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/ipu.h>
#include <mach/mx3fb.h>
#include <mach/ulpi.h>

#include "devices-imx31.h"
#include "devices.h"
#include "crm_regs.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 */
#if defined(CONFIG_USB_ULPI)

#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*/);

      return 0;

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*/);

      return 0;

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,
      .flags      = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_DIFF_UNI,
};

static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
      .init = usbh2_init,
      .portsc     = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
      .flags      = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_DIFF_UNI,
};
#endif /* CONFIG_USB_ULPI */

/* 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 struct gpio_keys_platform_data armadillo5x0_button_data = {
      .buttons    = armadillo5x0_buttons,
      .nbuttons   = ARRAY_SIZE(armadillo5x0_buttons),
};

static struct platform_device armadillo5x0_button_device = {
      .name       = "gpio-keys",
      .id         = -1,
      .num_resources    = 0,
      .dev        = {
            .platform_data    = &armadillo5x0_button_data,
      }
};

/*
 * 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 struct physmap_flash_data armadillo5x0_nor_flash_pdata = {
      .width            = 2,
      .parts            = armadillo5x0_nor_flash_partitions,
      .nr_parts   = ARRAY_SIZE(armadillo5x0_nor_flash_partitions),
};

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

static struct platform_device armadillo5x0_nor_flash = {
      .name             = "physmap-flash",
      .id               = -1,
      .num_resources          = 1,
      .resource         = &armadillo5x0_nor_flash_resource,
};

/*
 * 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 ipu_platform_data mx3_ipu_data = {
      .irq_base = MXC_IPU_IRQ_START,
};

static struct mx3fb_platform_data mx3fb_pdata = {
      .dma_dev    = &mx3_ipu.dev,
      .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(IOMUX_TO_IRQ(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(IOMUX_TO_IRQ(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,
      }, {
            .start      = IOMUX_TO_IRQ(MX31_PIN_GPIO1_0),
            .end  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_0),
            .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,
      &armadillo5x0_button_device,
};

/*
 * Perform board specific initializations
 */
static void __init armadillo5x0_init(void)
{
      mxc_iomux_setup_multiple_pins(armadillo5x0_pins,
                  ARRAY_SIZE(armadillo5x0_pins), "armadillo5x0");

      platform_add_devices(devices, ARRAY_SIZE(devices));
      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 */
      mxc_register_device(&mx3_ipu, &mx3_ipu_data);
      mxc_register_device(&mx3_fb, &mx3fb_pdata);

      /* Register NOR Flash */
      mxc_register_device(&armadillo5x0_nor_flash,
                      &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(MXC_CCM_RCSR) | (1 << 30), 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 */
#if defined(CONFIG_USB_ULPI)
      usbotg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
                  ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
      usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
                  ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);

      imx31_add_mxc_ehci_otg(&usbotg_pdata);
      imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
#endif
}

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  */
      .boot_params      = MX3x_PHYS_OFFSET + 0x100,
      .map_io           = mx31_map_io,
      .init_irq   = mx31_init_irq,
      .timer            = &armadillo5x0_timer,
      .init_machine     = armadillo5x0_init,
MACHINE_END

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