Logo Search packages:      
Sourcecode: linux version File versions  Download package

mach-pca100.c

/*
 * Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
 * Copyright (C) 2009 Sascha Hauer (kernel@pengutronix.de)
 *
 * 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/audmux.h>
#include <mach/mxc_nand.h>
#include <mach/irqs.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),
      }
};

#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
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),
};
#endif

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(IRQ_GPIOC(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(IRQ_GPIOC(29), data);
}

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

#if defined(CONFIG_USB_ULPI)
static int otg_phy_init(struct platform_device *pdev)
{
      gpio_set_value(OTG_PHY_CS_GPIO, 0);
      return 0;
}

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

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

static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
      .init = usbh2_phy_init,
      .portsc     = MXC_EHCI_MODE_ULPI,
      .flags      = MXC_EHCI_INTERFACE_DIFF_UNI,
};
#endif

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

static int otg_mode_host;

static int __init pca100_otg_mode(char *options)
{
      if (!strcmp(options, "host"))
            otg_mode_host = 1;
      else if (!strcmp(options, "device"))
            otg_mode_host = 0;
      else
            pr_info("otg_mode neither \"host\" nor \"device\". "
                  "Defaulting to device\n");
      return 0;
}
__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;

      /* SSI unit */
      mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
                          MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
                          MXC_AUDMUX_V1_PCR_TFCSEL(3) |
                          MXC_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */
                          MXC_AUDMUX_V1_PCR_RXDSEL(3));
      mxc_audmux_v1_configure_port(3,
                          MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
                          MXC_AUDMUX_V1_PCR_TFCSEL(0) |
                          MXC_AUDMUX_V1_PCR_TFSDIR |
                          MXC_AUDMUX_V1_PCR_RXDSEL(0));

      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);

#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
      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);
#endif

      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 defined(CONFIG_USB_ULPI)
      if (otg_mode_host) {
            otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
                        ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);

            imx27_add_mxc_ehci_otg(&otg_pdata);
      }

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

      imx27_add_mxc_ehci_hs(2, &usbh2_pdata);
#endif
      if (!otg_mode_host) {
            gpio_set_value(OTG_PHY_CS_GPIO, 0);
            imx27_add_fsl_usb2_udc(&otg_device_pdata);
      }

      imx27_add_imx_fb(&pca100_fb_data);

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

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")
      .boot_params    = MX27_PHYS_OFFSET + 0x100,
      .map_io         = mx27_map_io,
      .init_irq       = mx27_init_irq,
      .init_machine   = pca100_init,
      .timer          = &pca100_timer,
MACHINE_END


Generated by  Doxygen 1.6.0   Back to index