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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/gpio.h>

#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux.h>
#include <mach/i2c.h>
#include <asm/mach/time.h>
#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
#include <mach/spi.h>
#endif
#include <mach/imx-uart.h>
#include <mach/mxc_nand.h>
#include <mach/irqs.h>
#include <mach/mmc.h>

#include "devices.h"

static int pca100_pins[] = {
      /* 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,
      /* 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,
};

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

static struct mxc_nand_platform_data pca100_nand_board_info = {
      .width = 1,
      .hw_ecc = 1,
};

static struct platform_device *platform_devices[] __initdata = {
      &mxc_w1_master_device,
      &mxc_fec_device,
};

static struct imxi2c_platform_data pca100_i2c_1_data = {
      .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("rtc-pcf8563", 0x51),
            .type = "pcf8563"
      }, {
            I2C_BOARD_INFO("lm75", 0x4a),
            .type = "lm75"
      }
};

#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[] = {GPIO_PORTD + 28, GPIO_PORTD + 27};

static struct spi_imx_master pca100_spi_0_data = {
      .chipselect = pca100_spi_cs,
      .num_chipselect = ARRAY_SIZE(pca100_spi_cs),
};
#endif

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

static void __init pca100_init(void)
{
      int ret;

      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);

      mxc_register_device(&mxc_uart_device0, &uart_pdata);

      mxc_gpio_mode(GPIO_PORTC | 29 | GPIO_GPIO | GPIO_IN);
      mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);

      mxc_register_device(&mxc_nand_device, &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));

      mxc_register_device(&mxc_i2c_device1, &pca100_i2c_1_data);

      mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
      mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_OUT);

      /* GPIO0_IRQ */
      mxc_gpio_mode(GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN);
      /* GPIO1_IRQ */
      mxc_gpio_mode(GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN);
      /* GPIO2_IRQ */
      mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN);

#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
      spi_register_board_info(pca100_spi_board_info,
                        ARRAY_SIZE(pca100_spi_board_info));
      mxc_register_device(&mxc_spi_device0, &pca100_spi_0_data);
#endif

      platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}

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")
      .phys_io        = AIPI_BASE_ADDR,
      .io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
      .boot_params    = PHYS_OFFSET + 0x100,
      .map_io         = mx27_map_io,
      .init_irq       = mxc_init_irq,
      .init_machine   = pca100_init,
      .timer          = &pca100_timer,
MACHINE_END


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