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   1 /*
   2  * mach-davinci/devices.c
   3  *
   4  * DaVinci platform device setup/initialization
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/io.h>
  18
  19 #include <asm/mach/map.h>
  20
  21 #include <mach/hardware.h>
  22 #include <mach/i2c.h>
  23 #include <mach/irqs.h>
  24 #include <mach/cputype.h>
  25 #include <mach/mux.h>
  26 #include <mach/edma.h>
  27 #include <mach/mmc.h>
  28
  29 #define DAVINCI_I2C_BASE             0x01C21000
  30 #define DAVINCI_MMCSD0_BASE          0x01E10000
  31 #define DM355_MMCSD0_BASE            0x01E11000
  32 #define DM355_MMCSD1_BASE            0x01E00000
  33
  34 static struct resource i2c_resources[] = {
  35         {
  36                 .start          = DAVINCI_I2C_BASE,
  37                 .end            = DAVINCI_I2C_BASE + 0x40,
  38                 .flags          = IORESOURCE_MEM,
  39         },
  40         {
  41                 .start          = IRQ_I2C,
  42                 .flags          = IORESOURCE_IRQ,
  43         },
  44 };
  45
  46 static struct platform_device davinci_i2c_device = {
  47         .name           = "i2c_davinci",
  48         .id             = 1,
  49         .num_resources  = ARRAY_SIZE(i2c_resources),
  50         .resource       = i2c_resources,
  51 };
  52
  53 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  54 {
  55         if (cpu_is_davinci_dm644x())
  56                 davinci_cfg_reg(DM644X_I2C);
  57
  58         davinci_i2c_device.dev.platform_data = pdata;
  59         (void) platform_device_register(&davinci_i2c_device);
  60 }
  61
  62 #if     defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
  63
  64 static u64 mmcsd0_dma_mask = DMA_32BIT_MASK;
  65
  66 static struct resource mmcsd0_resources[] = {
  67         {
  68                 /* different on dm355 */
  69                 .start = DAVINCI_MMCSD0_BASE,
  70                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
  71                 .flags = IORESOURCE_MEM,
  72         },
  73         /* IRQs:  MMC/SD, then SDIO */
  74         {
  75                 .start = IRQ_MMCINT,
  76                 .flags = IORESOURCE_IRQ,
  77         }, {
  78                 /* different on dm355 */
  79                 .start = IRQ_SDIOINT,
  80                 .flags = IORESOURCE_IRQ,
  81         },
  82         /* DMA channels: RX, then TX */
  83         {
  84                 .start = DAVINCI_DMA_MMCRXEVT,
  85                 .flags = IORESOURCE_DMA,
  86         }, {
  87                 .start = DAVINCI_DMA_MMCTXEVT,
  88                 .flags = IORESOURCE_DMA,
  89         },
  90 };
  91
  92 static struct platform_device davinci_mmcsd0_device = {
  93         .name = "davinci_mmc",
  94         .id = 0,
  95         .dev = {
  96                 .dma_mask = &mmcsd0_dma_mask,
  97                 .coherent_dma_mask = DMA_32BIT_MASK,
  98         },
  99         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 100         .resource = mmcsd0_resources,
 101 };
 102
 103 static u64 mmcsd1_dma_mask = DMA_32BIT_MASK;
 104
 105 static struct resource mmcsd1_resources[] = {
 106         {
 107                 .start = DM355_MMCSD1_BASE,
 108                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 109                 .flags = IORESOURCE_MEM,
 110         },
 111         /* IRQs:  MMC/SD, then SDIO */
 112         {
 113                 .start = IRQ_DM355_MMCINT1,
 114                 .flags = IORESOURCE_IRQ,
 115         }, {
 116                 .start = IRQ_DM355_SDIOINT1,
 117                 .flags = IORESOURCE_IRQ,
 118         },
 119         /* DMA channels: RX, then TX */
 120         {
 121                 .start = 30,    /* rx */
 122                 .flags = IORESOURCE_DMA,
 123         }, {
 124                 .start = 31,    /* tx */
 125                 .flags = IORESOURCE_DMA,
 126         },
 127 };
 128
 129 static struct platform_device davinci_mmcsd1_device = {
 130         .name = "davinci_mmc",
 131         .id = 1,
 132         .dev = {
 133                 .dma_mask = &mmcsd1_dma_mask,
 134                 .coherent_dma_mask = DMA_32BIT_MASK,
 135         },
 136         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 137         .resource = mmcsd1_resources,
 138 };
 139
 140
 141 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 142 {
 143         struct platform_device  *pdev = NULL;
 144
 145         if (WARN_ON(cpu_is_davinci_dm646x()))
 146                 return;
 147
 148         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 149          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 150          *
 151          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 152          * not handled right here ...
 153          */
 154         switch (module) {
 155         case 1:
 156                 if (!cpu_is_davinci_dm355())
 157                         break;
 158
 159                 /* REVISIT we may not need all these pins if e.g. this
 160                  * is a hard-wired SDIO device...
 161                  */
 162                 davinci_cfg_reg(DM355_SD1_CMD);
 163                 davinci_cfg_reg(DM355_SD1_CLK);
 164                 davinci_cfg_reg(DM355_SD1_DATA0);
 165                 davinci_cfg_reg(DM355_SD1_DATA1);
 166                 davinci_cfg_reg(DM355_SD1_DATA2);
 167                 davinci_cfg_reg(DM355_SD1_DATA3);
 168
 169                 pdev = &davinci_mmcsd1_device;
 170                 break;
 171         case 0:
 172                 if (cpu_is_davinci_dm355()) {
 173                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 174                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 175                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 176
 177                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 178                         davinci_cfg_reg(DM355_MMCSD0);
 179
 180                         /* enable RX EDMA */
 181                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 182                 }
 183
 184                 else if (cpu_is_davinci_dm644x()) {
 185                         /* REVISIT: should this be in board-init code? */
 186                         void __iomem *base =
 187                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
 188
 189                         /* Power-on 3.3V IO cells */
 190                         __raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
 191                         /*Set up the pull regiter for MMC */
 192                         davinci_cfg_reg(DM644X_MSTK);
 193                 }
 194
 195                 pdev = &davinci_mmcsd0_device;
 196                 break;
 197         }
 198
 199         if (WARN_ON(!pdev))
 200                 return;
 201
 202         pdev->dev.platform_data = config;
 203         platform_device_register(pdev);
 204 }
 205
 206 #else
 207
 208 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 209 {
 210 }
 211
 212 #endif
 213
 214 /*-------------------------------------------------------------------------*/
 215
 216 static struct resource wdt_resources[] = {
 217         {
 218                 .start  = 0x01c21c00,
 219                 .end    = 0x01c21fff,
 220                 .flags  = IORESOURCE_MEM,
 221         },
 222 };
 223
 224 struct platform_device davinci_wdt_device = {
 225         .name           = "watchdog",
 226         .id             = -1,
 227         .num_resources  = ARRAY_SIZE(wdt_resources),
 228         .resource       = wdt_resources,
 229 };
 230
 231 static void davinci_init_wdt(void)
 232 {
 233         platform_device_register(&davinci_wdt_device);
 234 }
 235
 236 /*-------------------------------------------------------------------------*/
 237
 238 static int __init davinci_init_devices(void)
 239 {
 240         /* please keep these calls, and their implementations above,
 241          * in alphabetical order so they're easier to sort through.
 242          */
 243         davinci_init_wdt();
 244
 245         return 0;
 246 }
 247 arch_initcall(davinci_init_devices);
 248