/*
 * Copyright (C) 2008 Juergen Beisert (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/gpio.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/can/platform/sja1000.h>

#include <asm/mach/arch.h>

#include "common.h"
#include "devices-imx27.h"
#include "hardware.h"
#include "iomux-mx27.h"

static const int pcm970_pins[] __initconst = {
        /* 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,
        /* 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,
        PA24_PF_REV,
        PA25_PF_CLS,
        PA26_PF_PS,
        PA27_PF_SPL_SPR,
        PA28_PF_HSYNC,
        PA29_PF_VSYNC,
        PA30_PF_CONTRAST,
        PA31_PF_OE_ACD,
        /*
         * it seems the data line misses a pullup, so we must enable
         * the internal pullup as a local workaround
         */
        PD17_PF_I2C_DATA | GPIO_PUEN,
        PD18_PF_I2C_CLK,
        /* Camera */
        PB10_PF_CSI_D0,
        PB11_PF_CSI_D1,
        PB12_PF_CSI_D2,
        PB13_PF_CSI_D3,
        PB14_PF_CSI_D4,
        PB15_PF_CSI_MCLK,
        PB16_PF_CSI_PIXCLK,
        PB17_PF_CSI_D5,
        PB18_PF_CSI_D6,
        PB19_PF_CSI_D7,
        PB20_PF_CSI_VSYNC,
        PB21_PF_CSI_HSYNC,
};

static int pcm970_sdhc2_get_ro(struct device *dev)
{
        return gpio_get_value(GPIO_PORTC + 28);
}

static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
{
        int ret;

        ret = request_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), detect_irq,
                          IRQF_TRIGGER_FALLING, "imx-mmc-detect", data);
        if (ret)
                return ret;

        ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
        if (ret) {
                free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
                return ret;
        }

        gpio_direction_input(GPIO_PORTC + 28);

        return 0;
}

static void pcm970_sdhc2_exit(struct device *dev, void *data)
{
        free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
        gpio_free(GPIO_PORTC + 28);
}

static const struct imxmmc_platform_data sdhc_pdata __initconst = {
        .get_ro = pcm970_sdhc2_get_ro,
        .init = pcm970_sdhc2_init,
        .exit = pcm970_sdhc2_exit,
};

static struct imx_fb_videomode pcm970_modes[] = {
        {
                .mode = {
                        .name           = "Sharp-LQ035Q7",
                        .refresh        = 60,
                        .xres           = 240,
                        .yres           = 320,
                        .pixclock       = 188679, /* in ps (5.3MHz) */
                        .hsync_len      = 7,
                        .left_margin    = 5,
                        .right_margin   = 16,
                        .vsync_len      = 1,
                        .upper_margin   = 7,
                        .lower_margin   = 9,
                },
                /*
                 * - HSYNC active high
                 * - VSYNC active high
                 * - clk notenabled while idle
                 * - clock not inverted
                 * - data not inverted
                 * - data enable low active
                 * - enable sharp mode
                 */
                .pcr            = 0xF00080C0,
                .bpp            = 16,
        }, {
                .mode = {
                        .name           = "TX090",
                        .refresh        = 60,
                        .xres           = 240,
                        .yres           = 320,
                        .pixclock       = 38255,
                        .left_margin    = 144,
                        .right_margin   = 0,
                        .upper_margin   = 7,
                        .lower_margin   = 40,
                        .hsync_len      = 96,
                        .vsync_len      = 1,
                },
                /*
                 * - HSYNC active low (1 << 22)
                 * - VSYNC active low (1 << 23)
                 * - clk notenabled while idle
                 * - clock not inverted
                 * - data not inverted
                 * - data enable low active
                 * - enable sharp mode
                 */
                .pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19),
                .bpp = 32,
        },
};

static const struct imx_fb_platform_data pcm038_fb_data __initconst = {
        .mode = pcm970_modes,
        .num_modes = ARRAY_SIZE(pcm970_modes),

        .pwmr           = 0x00A903FF,
        .lscr1          = 0x00120300,
        .dmacr          = 0x00020010,
};

static struct resource pcm970_sja1000_resources[] = {
        {
                .start   = MX27_CS4_BASE_ADDR,
                .end     = MX27_CS4_BASE_ADDR + 0x100 - 1,
                .flags   = IORESOURCE_MEM,
        }, {
                /* irq number is run-time assigned */
                .flags   = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
        },
};

static struct sja1000_platform_data pcm970_sja1000_platform_data = {
        .osc_freq       = 16000000,
        .ocr            = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
        .cdr            = CDR_CBP,
};

static struct platform_device pcm970_sja1000 = {
        .name = "sja1000_platform",
        .dev = {
                .platform_data = &pcm970_sja1000_platform_data,
        },
        .resource = pcm970_sja1000_resources,
        .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
};

/*
 * system init for baseboard usage. Will be called by pcm038 init.
 *
 * Add platform devices present on this baseboard and init
 * them from CPU side as far as required to use them later on
 */
void __init pcm970_baseboard_init(void)
{
        mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
                        "PCM970");

        imx27_add_imx_fb(&pcm038_fb_data);
        mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN);
        imx27_add_mxc_mmc(1, &sdhc_pdata);
        pcm970_sja1000_resources[1].start = gpio_to_irq(IMX_GPIO_NR(5, 19));
        pcm970_sja1000_resources[1].end = gpio_to_irq(IMX_GPIO_NR(5, 19));
        platform_device_register(&pcm970_sja1000);
}