/*
 * mach-davinci/devices.c
 *
 * DaVinci platform device setup/initialization
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>

#include <asm/mach/map.h>

#include <mach/hardware.h>
#include <mach/i2c.h>
#include <mach/irqs.h>
#include <mach/cputype.h>
#include <mach/mux.h>
#include <mach/edma.h>
#include <mach/mmc.h>
#include <mach/time.h>

#define DAVINCI_I2C_BASE             0x01C21000
#define DAVINCI_MMCSD0_BASE          0x01E10000
#define DM355_MMCSD0_BASE            0x01E11000
#define DM355_MMCSD1_BASE            0x01E00000
#define DM365_MMCSD0_BASE            0x01D11000
#define DM365_MMCSD1_BASE            0x01D00000

static struct resource i2c_resources[] = {
        {
                .start          = DAVINCI_I2C_BASE,
                .end            = DAVINCI_I2C_BASE + 0x40,
                .flags          = IORESOURCE_MEM,
        },
        {
                .start          = IRQ_I2C,
                .flags          = IORESOURCE_IRQ,
        },
};

static struct platform_device davinci_i2c_device = {
        .name           = "i2c_davinci",
        .id             = 1,
        .num_resources  = ARRAY_SIZE(i2c_resources),
        .resource       = i2c_resources,
};

void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
{
        if (cpu_is_davinci_dm644x())
                davinci_cfg_reg(DM644X_I2C);

        davinci_i2c_device.dev.platform_data = pdata;
        (void) platform_device_register(&davinci_i2c_device);
}

#if     defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)

static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);

static struct resource mmcsd0_resources[] = {
        {
                /* different on dm355 */
                .start = DAVINCI_MMCSD0_BASE,
                .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
                .flags = IORESOURCE_MEM,
        },
        /* IRQs:  MMC/SD, then SDIO */
        {
                .start = IRQ_MMCINT,
                .flags = IORESOURCE_IRQ,
        }, {
                /* different on dm355 */
                .start = IRQ_SDIOINT,
                .flags = IORESOURCE_IRQ,
        },
        /* DMA channels: RX, then TX */
        {
                .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
                .flags = IORESOURCE_DMA,
        }, {
                .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
                .flags = IORESOURCE_DMA,
        },
};

static struct platform_device davinci_mmcsd0_device = {
        .name = "davinci_mmc",
        .id = 0,
        .dev = {
                .dma_mask = &mmcsd0_dma_mask,
                .coherent_dma_mask = DMA_BIT_MASK(32),
        },
        .num_resources = ARRAY_SIZE(mmcsd0_resources),
        .resource = mmcsd0_resources,
};

static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);

static struct resource mmcsd1_resources[] = {
        {
                .start = DM355_MMCSD1_BASE,
                .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
                .flags = IORESOURCE_MEM,
        },
        /* IRQs:  MMC/SD, then SDIO */
        {
                .start = IRQ_DM355_MMCINT1,
                .flags = IORESOURCE_IRQ,
        }, {
                .start = IRQ_DM355_SDIOINT1,
                .flags = IORESOURCE_IRQ,
        },
        /* DMA channels: RX, then TX */
        {
                .start = EDMA_CTLR_CHAN(0, 30), /* rx */
                .flags = IORESOURCE_DMA,
        }, {
                .start = EDMA_CTLR_CHAN(0, 31), /* tx */
                .flags = IORESOURCE_DMA,
        },
};

static struct platform_device davinci_mmcsd1_device = {
        .name = "davinci_mmc",
        .id = 1,
        .dev = {
                .dma_mask = &mmcsd1_dma_mask,
                .coherent_dma_mask = DMA_BIT_MASK(32),
        },
        .num_resources = ARRAY_SIZE(mmcsd1_resources),
        .resource = mmcsd1_resources,
};


void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
{
        struct platform_device  *pdev = NULL;

        if (WARN_ON(cpu_is_davinci_dm646x()))
                return;

        /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
         * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
         *
         * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
         * not handled right here ...
         */
        switch (module) {
        case 1:
                if (cpu_is_davinci_dm355()) {
                        /* REVISIT we may not need all these pins if e.g. this
                         * is a hard-wired SDIO device...
                         */
                        davinci_cfg_reg(DM355_SD1_CMD);
                        davinci_cfg_reg(DM355_SD1_CLK);
                        davinci_cfg_reg(DM355_SD1_DATA0);
                        davinci_cfg_reg(DM355_SD1_DATA1);
                        davinci_cfg_reg(DM355_SD1_DATA2);
                        davinci_cfg_reg(DM355_SD1_DATA3);
                } else if (cpu_is_davinci_dm365()) {
                        void __iomem *pupdctl1 =
                                IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE + 0x7c);

                        /* Configure pull down control */
                        __raw_writel((__raw_readl(pupdctl1) & ~0x400),
                                        pupdctl1);

                        mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
                        mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
                                                        SZ_4K - 1;
                        mmcsd0_resources[2].start = IRQ_DM365_SDIOINT1;
                } else
                        break;

                pdev = &davinci_mmcsd1_device;
                break;
        case 0:
                if (cpu_is_davinci_dm355()) {
                        mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
                        mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
                        mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;

                        /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
                        davinci_cfg_reg(DM355_MMCSD0);

                        /* enable RX EDMA */
                        davinci_cfg_reg(DM355_EVT26_MMC0_RX);
                } else if (cpu_is_davinci_dm365()) {
                        mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
                        mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
                                                        SZ_4K - 1;
                        mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
                } else if (cpu_is_davinci_dm644x()) {
                        /* REVISIT: should this be in board-init code? */
                        void __iomem *base =
                                IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);

                        /* Power-on 3.3V IO cells */
                        __raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
                        /*Set up the pull regiter for MMC */
                        davinci_cfg_reg(DM644X_MSTK);
                }

                pdev = &davinci_mmcsd0_device;
                break;
        }

        if (WARN_ON(!pdev))
                return;

        pdev->dev.platform_data = config;
        platform_device_register(pdev);
}

#else

void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
{
}

#endif

/*-------------------------------------------------------------------------*/

static struct resource wdt_resources[] = {
        {
                .start  = DAVINCI_WDOG_BASE,
                .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
                .flags  = IORESOURCE_MEM,
        },
};

struct platform_device davinci_wdt_device = {
        .name           = "watchdog",
        .id             = -1,
        .num_resources  = ARRAY_SIZE(wdt_resources),
        .resource       = wdt_resources,
};

static void davinci_init_wdt(void)
{
        platform_device_register(&davinci_wdt_device);
}

/*-------------------------------------------------------------------------*/

struct davinci_timer_instance davinci_timer_instance[2] = {
        {
                .base           = IO_ADDRESS(DAVINCI_TIMER0_BASE),
                .bottom_irq     = IRQ_TINT0_TINT12,
                .top_irq        = IRQ_TINT0_TINT34,
        },
        {
                .base           = IO_ADDRESS(DAVINCI_TIMER1_BASE),
                .bottom_irq     = IRQ_TINT1_TINT12,
                .top_irq        = IRQ_TINT1_TINT34,
        },
};

/*-------------------------------------------------------------------------*/

static int __init davinci_init_devices(void)
{
        /* please keep these calls, and their implementations above,
         * in alphabetical order so they're easier to sort through.
         */
        davinci_init_wdt();

        return 0;
}
arch_initcall(davinci_init_devices);