/*
 * 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