/*
   * 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/init.h>
  #include <linux/platform_device.h>
  #include <linux/dma-mapping.h>
  #include <linux/io.h>
  #include <linux/reboot.h>
  
  #include <mach/hardware.h>
  #include <linux/platform_data/i2c-davinci.h>
  #include <mach/irqs.h>
  #include <mach/cputype.h>
  #include <mach/mux.h>
  #include <linux/platform_data/mmc-davinci.h>
  #include <mach/time.h>
  #include <linux/platform_data/edma.h>
  
  
  #include "davinci.h"
  #include "clock.h"
  
  #define DAVINCI_I2C_BASE	     0x01C21000
  #define DAVINCI_ATA_BASE	     0x01C66000
  #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
  
  #define DAVINCI_DMA_MMCRXEVT	26
  #define DAVINCI_DMA_MMCTXEVT	27
  
  void __iomem  *davinci_sysmod_base;
  
  void davinci_map_sysmod(void)
  {
  	davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
  					      0x800);
  	/*
  	 * Throw a bug since a lot of board initialization code depends
  	 * on system module availability. ioremap() failing this early
  	 * need careful looking into anyway.
  	 */
  	BUG_ON(!davinci_sysmod_base);
  }
  
  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);
  }
  
  static struct resource ide_resources[] = {
  	{
  		.start		= DAVINCI_ATA_BASE,
  		.end		= DAVINCI_ATA_BASE + 0x7ff,
  		.flags		= IORESOURCE_MEM,
  	},
  	{
  		.start		= IRQ_IDE,
  		.end		= IRQ_IDE,
  		.flags		= IORESOURCE_IRQ,
  	},
  };
  
  static u64 ide_dma_mask = DMA_BIT_MASK(32);
  
  static struct platform_device ide_device = {
  	.name           = "palm_bk3710",
  	.id             = -1,
  	.resource       = ide_resources,
  	.num_resources  = ARRAY_SIZE(ide_resources),
  	.dev = {
  		.dma_mask		= &ide_dma_mask,
  		.coherent_dma_mask      = DMA_BIT_MASK(32),
  	},
  };
  
  void __init davinci_init_ide(void)
  {
  	if (cpu_is_davinci_dm644x()) {
  		davinci_cfg_reg(DM644X_HPIEN_DISABLE);
  		davinci_cfg_reg(DM644X_ATAEN);
  		davinci_cfg_reg(DM644X_HDIREN);
  	} else if (cpu_is_davinci_dm646x()) {
  		/* IRQ_DM646X_IDE is the same as IRQ_IDE */
  		davinci_cfg_reg(DM646X_ATAEN);
  	} else {
  		WARN_ON(1);
  		return;
  	}
  
  	platform_device_register(&ide_device);
  }
  
  #if IS_ENABLED(CONFIG_MMC_DAVINCI)
  
  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 = "dm6441-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 = "dm6441-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()) {
  			/* Configure pull down control */
  			unsigned v;
  
  			v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
  			__raw_writel(v & ~0xfc0,
  					DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
  
  			mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
  			mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
  							SZ_4K - 1;
  			mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
  			davinci_mmcsd1_device.name = "da830-mmc";
  		} 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;
  			davinci_mmcsd0_device.name = "da830-mmc";
  		} else if (cpu_is_davinci_dm644x()) {
  			/* REVISIT: should this be in board-init code? */
  			/* Power-on 3.3V IO cells */
  			__raw_writel(0,
  				DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
  			/*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		= "davinci-wdt",
  	.id		= -1,
  	.num_resources	= ARRAY_SIZE(wdt_resources),
  	.resource	= wdt_resources,
  };
  
  void davinci_restart(enum reboot_mode mode, const char *cmd)
  {
  	davinci_watchdog_reset(&davinci_wdt_device);
  }
  
  static void davinci_init_wdt(void)
  {
  	platform_device_register(&davinci_wdt_device);
  }
  
  static struct platform_device davinci_gpio_device = {
  	.name	= "davinci_gpio",
  	.id	= -1,
  };
  
  int davinci_gpio_register(struct resource *res, int size, void *pdata)
  {
  	davinci_gpio_device.resource = res;
  	davinci_gpio_device.num_resources = size;
  	davinci_gpio_device.dev.platform_data = pdata;
  	return platform_device_register(&davinci_gpio_device);
  }
  
  /*-------------------------------------------------------------------------*/
  
  /*-------------------------------------------------------------------------*/
  
  struct davinci_timer_instance davinci_timer_instance[2] = {
  	{
  		.base		= DAVINCI_TIMER0_BASE,
  		.bottom_irq	= IRQ_TINT0_TINT12,
  		.top_irq	= IRQ_TINT0_TINT34,
  	},
  	{
  		.base		= 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);