arch/arm/mach-davinci/devices.c

   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/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/dma-mapping.h>
  15 #include <linux/io.h>
  16
  17 #include <mach/hardware.h>
  18 #include <mach/i2c.h>
  19 #include <mach/irqs.h>
  20 #include <mach/cputype.h>
  21 #include <mach/mux.h>
  22 #include <mach/edma.h>
  23 #include <mach/mmc.h>
  24 #include <mach/time.h>
  25
  26 #define DAVINCI_I2C_BASE             0x01C21000
  27 #define DAVINCI_MMCSD0_BASE          0x01E10000
  28 #define DM355_MMCSD0_BASE            0x01E11000
  29 #define DM355_MMCSD1_BASE            0x01E00000
  30 #define DM365_MMCSD0_BASE            0x01D11000
  31 #define DM365_MMCSD1_BASE            0x01D00000
  32
  33 static struct resource i2c_resources[] = {
  34         {
  35                 .start          = DAVINCI_I2C_BASE,
  36                 .end            = DAVINCI_I2C_BASE + 0x40,
  37                 .flags          = IORESOURCE_MEM,
  38         },
  39         {
  40                 .start          = IRQ_I2C,
  41                 .flags          = IORESOURCE_IRQ,
  42         },
  43 };
  44
  45 static struct platform_device davinci_i2c_device = {
  46         .name           = "i2c_davinci",
  47         .id             = 1,
  48         .num_resources  = ARRAY_SIZE(i2c_resources),
  49         .resource       = i2c_resources,
  50 };
  51
  52 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  53 {
  54         if (cpu_is_davinci_dm644x())
  55                 davinci_cfg_reg(DM644X_I2C);
  56
  57         davinci_i2c_device.dev.platform_data = pdata;
  58         (void) platform_device_register(&davinci_i2c_device);
  59 }
  60
  61 #if     defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
  62
  63 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
  64
  65 static struct resource mmcsd0_resources[] = {
  66         {
  67                 /* different on dm355 */
  68                 .start = DAVINCI_MMCSD0_BASE,
  69                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
  70                 .flags = IORESOURCE_MEM,
  71         },
  72         /* IRQs:  MMC/SD, then SDIO */
  73         {
  74                 .start = IRQ_MMCINT,
  75                 .flags = IORESOURCE_IRQ,
  76         }, {
  77                 /* different on dm355 */
  78                 .start = IRQ_SDIOINT,
  79                 .flags = IORESOURCE_IRQ,
  80         },
  81         /* DMA channels: RX, then TX */
  82         {
  83                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
  84                 .flags = IORESOURCE_DMA,
  85         }, {
  86                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
  87                 .flags = IORESOURCE_DMA,
  88         },
  89 };
  90
  91 static struct platform_device davinci_mmcsd0_device = {
  92         .name = "davinci_mmc",
  93         .id = 0,
  94         .dev = {
  95                 .dma_mask = &mmcsd0_dma_mask,
  96                 .coherent_dma_mask = DMA_BIT_MASK(32),
  97         },
  98         .num_resources = ARRAY_SIZE(mmcsd0_resources),
  99         .resource = mmcsd0_resources,
 100 };
 101
 102 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 103
 104 static struct resource mmcsd1_resources[] = {
 105         {
 106                 .start = DM355_MMCSD1_BASE,
 107                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 108                 .flags = IORESOURCE_MEM,
 109         },
 110         /* IRQs:  MMC/SD, then SDIO */
 111         {
 112                 .start = IRQ_DM355_MMCINT1,
 113                 .flags = IORESOURCE_IRQ,
 114         }, {
 115                 .start = IRQ_DM355_SDIOINT1,
 116                 .flags = IORESOURCE_IRQ,
 117         },
 118         /* DMA channels: RX, then TX */
 119         {
 120                 .start = EDMA_CTLR_CHAN(0, 30), /* rx */
 121                 .flags = IORESOURCE_DMA,
 122         }, {
 123                 .start = EDMA_CTLR_CHAN(0, 31), /* tx */
 124                 .flags = IORESOURCE_DMA,
 125         },
 126 };
 127
 128 static struct platform_device davinci_mmcsd1_device = {
 129         .name = "davinci_mmc",
 130         .id = 1,
 131         .dev = {
 132                 .dma_mask = &mmcsd1_dma_mask,
 133                 .coherent_dma_mask = DMA_BIT_MASK(32),
 134         },
 135         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 136         .resource = mmcsd1_resources,
 137 };
 138
 139
 140 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 141 {
 142         struct platform_device  *pdev = NULL;
 143
 144         if (WARN_ON(cpu_is_davinci_dm646x()))
 145                 return;
 146
 147         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 148          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 149          *
 150          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 151          * not handled right here ...
 152          */
 153         switch (module) {
 154         case 1:
 155                 if (cpu_is_davinci_dm355()) {
 156                         /* REVISIT we may not need all these pins if e.g. this
 157                          * is a hard-wired SDIO device...
 158                          */
 159                         davinci_cfg_reg(DM355_SD1_CMD);
 160                         davinci_cfg_reg(DM355_SD1_CLK);
 161                         davinci_cfg_reg(DM355_SD1_DATA0);
 162                         davinci_cfg_reg(DM355_SD1_DATA1);
 163                         davinci_cfg_reg(DM355_SD1_DATA2);
 164                         davinci_cfg_reg(DM355_SD1_DATA3);
 165                 } else if (cpu_is_davinci_dm365()) {
 166                         void __iomem *pupdctl1 =
 167                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE + 0x7c);
 168
 169                         /* Configure pull down control */
 170                         __raw_writel((__raw_readl(pupdctl1) & ~0x400),
 171                                         pupdctl1);
 172
 173                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 174                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 175                                                         SZ_4K - 1;
 176                         mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
 177                 } else
 178                         break;
 179
 180                 pdev = &davinci_mmcsd1_device;
 181                 break;
 182         case 0:
 183                 if (cpu_is_davinci_dm355()) {
 184                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 185                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 186                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 187
 188                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 189                         davinci_cfg_reg(DM355_MMCSD0);
 190
 191                         /* enable RX EDMA */
 192                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 193                 } else if (cpu_is_davinci_dm365()) {
 194                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 195                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 196                                                         SZ_4K - 1;
 197                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
 198                 } else if (cpu_is_davinci_dm644x()) {
 199                         /* REVISIT: should this be in board-init code? */
 200                         void __iomem *base =
 201                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
 202
 203                         /* Power-on 3.3V IO cells */
 204                         __raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
 205                         /*Set up the pull regiter for MMC */
 206                         davinci_cfg_reg(DM644X_MSTK);
 207                 }
 208
 209                 pdev = &davinci_mmcsd0_device;
 210                 break;
 211         }
 212
 213         if (WARN_ON(!pdev))
 214                 return;
 215
 216         pdev->dev.platform_data = config;
 217         platform_device_register(pdev);
 218 }
 219
 220 #else
 221
 222 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 223 {
 224 }
 225
 226 #endif
 227
 228 /*-------------------------------------------------------------------------*/
 229
 230 static struct resource wdt_resources[] = {
 231         {
 232                 .start  = DAVINCI_WDOG_BASE,
 233                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 234                 .flags  = IORESOURCE_MEM,
 235         },
 236 };
 237
 238 struct platform_device davinci_wdt_device = {
 239         .name           = "watchdog",
 240         .id             = -1,
 241         .num_resources  = ARRAY_SIZE(wdt_resources),
 242         .resource       = wdt_resources,
 243 };
 244
 245 static void davinci_init_wdt(void)
 246 {
 247         platform_device_register(&davinci_wdt_device);
 248 }
 249
 250 /*-------------------------------------------------------------------------*/
 251
 252 struct davinci_timer_instance davinci_timer_instance[2] = {
 253         {
 254                 .base           = IO_ADDRESS(DAVINCI_TIMER0_BASE),
 255                 .bottom_irq     = IRQ_TINT0_TINT12,
 256                 .top_irq        = IRQ_TINT0_TINT34,
 257         },
 258         {
 259                 .base           = IO_ADDRESS(DAVINCI_TIMER1_BASE),
 260                 .bottom_irq     = IRQ_TINT1_TINT12,
 261                 .top_irq        = IRQ_TINT1_TINT34,
 262         },
 263 };
 264
 265 /*-------------------------------------------------------------------------*/
 266
 267 static int __init davinci_init_devices(void)
 268 {
 269         /* please keep these calls, and their implementations above,
 270          * in alphabetical order so they're easier to sort through.
 271          */
 272         davinci_init_wdt();
 273
 274         return 0;
 275 }
 276 arch_initcall(davinci_init_devices);
 277