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 #include "clock.h"
  27
  28 #define DAVINCI_I2C_BASE             0x01C21000
  29 #define DAVINCI_ATA_BASE             0x01C66000
  30 #define DAVINCI_MMCSD0_BASE          0x01E10000
  31 #define DM355_MMCSD0_BASE            0x01E11000
  32 #define DM355_MMCSD1_BASE            0x01E00000
  33 #define DM365_MMCSD0_BASE            0x01D11000
  34 #define DM365_MMCSD1_BASE            0x01D00000
  35
  36 static struct resource i2c_resources[] = {
  37         {
  38                 .start          = DAVINCI_I2C_BASE,
  39                 .end            = DAVINCI_I2C_BASE + 0x40,
  40                 .flags          = IORESOURCE_MEM,
  41         },
  42         {
  43                 .start          = IRQ_I2C,
  44                 .flags          = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct platform_device davinci_i2c_device = {
  49         .name           = "i2c_davinci",
  50         .id             = 1,
  51         .num_resources  = ARRAY_SIZE(i2c_resources),
  52         .resource       = i2c_resources,
  53 };
  54
  55 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  56 {
  57         if (cpu_is_davinci_dm644x())
  58                 davinci_cfg_reg(DM644X_I2C);
  59
  60         davinci_i2c_device.dev.platform_data = pdata;
  61         (void) platform_device_register(&davinci_i2c_device);
  62 }
  63
  64 static struct resource ide_resources[] = {
  65         {
  66                 .start          = DAVINCI_ATA_BASE,
  67                 .end            = DAVINCI_ATA_BASE + 0x7ff,
  68                 .flags          = IORESOURCE_MEM,
  69         },
  70         {
  71                 .start          = IRQ_IDE,
  72                 .end            = IRQ_IDE,
  73                 .flags          = IORESOURCE_IRQ,
  74         },
  75 };
  76
  77 static u64 ide_dma_mask = DMA_BIT_MASK(32);
  78
  79 static struct platform_device ide_device = {
  80         .name           = "palm_bk3710",
  81         .id             = -1,
  82         .resource       = ide_resources,
  83         .num_resources  = ARRAY_SIZE(ide_resources),
  84         .dev = {
  85                 .dma_mask               = &ide_dma_mask,
  86                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  87         },
  88 };
  89
  90 void __init davinci_init_ide(void)
  91 {
  92         if (cpu_is_davinci_dm644x()) {
  93                 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
  94                 davinci_cfg_reg(DM644X_ATAEN);
  95                 davinci_cfg_reg(DM644X_HDIREN);
  96         } else if (cpu_is_davinci_dm646x()) {
  97                 /* IRQ_DM646X_IDE is the same as IRQ_IDE */
  98                 davinci_cfg_reg(DM646X_ATAEN);
  99         } else {
 100                 WARN_ON(1);
 101                 return;
 102         }
 103
 104         platform_device_register(&ide_device);
 105 }
 106
 107 #if     defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
 108
 109 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
 110
 111 static struct resource mmcsd0_resources[] = {
 112         {
 113                 /* different on dm355 */
 114                 .start = DAVINCI_MMCSD0_BASE,
 115                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
 116                 .flags = IORESOURCE_MEM,
 117         },
 118         /* IRQs:  MMC/SD, then SDIO */
 119         {
 120                 .start = IRQ_MMCINT,
 121                 .flags = IORESOURCE_IRQ,
 122         }, {
 123                 /* different on dm355 */
 124                 .start = IRQ_SDIOINT,
 125                 .flags = IORESOURCE_IRQ,
 126         },
 127         /* DMA channels: RX, then TX */
 128         {
 129                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
 130                 .flags = IORESOURCE_DMA,
 131         }, {
 132                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
 133                 .flags = IORESOURCE_DMA,
 134         },
 135 };
 136
 137 static struct platform_device davinci_mmcsd0_device = {
 138         .name = "davinci_mmc",
 139         .id = 0,
 140         .dev = {
 141                 .dma_mask = &mmcsd0_dma_mask,
 142                 .coherent_dma_mask = DMA_BIT_MASK(32),
 143         },
 144         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 145         .resource = mmcsd0_resources,
 146 };
 147
 148 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 149
 150 static struct resource mmcsd1_resources[] = {
 151         {
 152                 .start = DM355_MMCSD1_BASE,
 153                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 154                 .flags = IORESOURCE_MEM,
 155         },
 156         /* IRQs:  MMC/SD, then SDIO */
 157         {
 158                 .start = IRQ_DM355_MMCINT1,
 159                 .flags = IORESOURCE_IRQ,
 160         }, {
 161                 .start = IRQ_DM355_SDIOINT1,
 162                 .flags = IORESOURCE_IRQ,
 163         },
 164         /* DMA channels: RX, then TX */
 165         {
 166                 .start = EDMA_CTLR_CHAN(0, 30), /* rx */
 167                 .flags = IORESOURCE_DMA,
 168         }, {
 169                 .start = EDMA_CTLR_CHAN(0, 31), /* tx */
 170                 .flags = IORESOURCE_DMA,
 171         },
 172 };
 173
 174 static struct platform_device davinci_mmcsd1_device = {
 175         .name = "davinci_mmc",
 176         .id = 1,
 177         .dev = {
 178                 .dma_mask = &mmcsd1_dma_mask,
 179                 .coherent_dma_mask = DMA_BIT_MASK(32),
 180         },
 181         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 182         .resource = mmcsd1_resources,
 183 };
 184
 185
 186 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 187 {
 188         struct platform_device  *pdev = NULL;
 189
 190         if (WARN_ON(cpu_is_davinci_dm646x()))
 191                 return;
 192
 193         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 194          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 195          *
 196          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 197          * not handled right here ...
 198          */
 199         switch (module) {
 200         case 1:
 201                 if (cpu_is_davinci_dm355()) {
 202                         /* REVISIT we may not need all these pins if e.g. this
 203                          * is a hard-wired SDIO device...
 204                          */
 205                         davinci_cfg_reg(DM355_SD1_CMD);
 206                         davinci_cfg_reg(DM355_SD1_CLK);
 207                         davinci_cfg_reg(DM355_SD1_DATA0);
 208                         davinci_cfg_reg(DM355_SD1_DATA1);
 209                         davinci_cfg_reg(DM355_SD1_DATA2);
 210                         davinci_cfg_reg(DM355_SD1_DATA3);
 211                 } else if (cpu_is_davinci_dm365()) {
 212                         void __iomem *pupdctl1 =
 213                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE + 0x7c);
 214
 215                         /* Configure pull down control */
 216                         __raw_writel((__raw_readl(pupdctl1) & ~0xfc0),
 217                                         pupdctl1);
 218
 219                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 220                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 221                                                         SZ_4K - 1;
 222                         mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
 223                 } else
 224                         break;
 225
 226                 pdev = &davinci_mmcsd1_device;
 227                 break;
 228         case 0:
 229                 if (cpu_is_davinci_dm355()) {
 230                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 231                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 232                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 233
 234                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 235                         davinci_cfg_reg(DM355_MMCSD0);
 236
 237                         /* enable RX EDMA */
 238                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 239                 } else if (cpu_is_davinci_dm365()) {
 240                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 241                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 242                                                         SZ_4K - 1;
 243                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
 244                 } else if (cpu_is_davinci_dm644x()) {
 245                         /* REVISIT: should this be in board-init code? */
 246                         void __iomem *base =
 247                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
 248
 249                         /* Power-on 3.3V IO cells */
 250                         __raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
 251                         /*Set up the pull regiter for MMC */
 252                         davinci_cfg_reg(DM644X_MSTK);
 253                 }
 254
 255                 pdev = &davinci_mmcsd0_device;
 256                 break;
 257         }
 258
 259         if (WARN_ON(!pdev))
 260                 return;
 261
 262         pdev->dev.platform_data = config;
 263         platform_device_register(pdev);
 264 }
 265
 266 #else
 267
 268 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 269 {
 270 }
 271
 272 #endif
 273
 274 /*-------------------------------------------------------------------------*/
 275
 276 static struct resource wdt_resources[] = {
 277         {
 278                 .start  = DAVINCI_WDOG_BASE,
 279                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 280                 .flags  = IORESOURCE_MEM,
 281         },
 282 };
 283
 284 struct platform_device davinci_wdt_device = {
 285         .name           = "watchdog",
 286         .id             = -1,
 287         .num_resources  = ARRAY_SIZE(wdt_resources),
 288         .resource       = wdt_resources,
 289 };
 290
 291 static void davinci_init_wdt(void)
 292 {
 293         platform_device_register(&davinci_wdt_device);
 294 }
 295
 296 /*-------------------------------------------------------------------------*/
 297
 298 struct davinci_timer_instance davinci_timer_instance[2] = {
 299         {
 300                 .base           = DAVINCI_TIMER0_BASE,
 301                 .bottom_irq     = IRQ_TINT0_TINT12,
 302                 .top_irq        = IRQ_TINT0_TINT34,
 303         },
 304         {
 305                 .base           = DAVINCI_TIMER1_BASE,
 306                 .bottom_irq     = IRQ_TINT1_TINT12,
 307                 .top_irq        = IRQ_TINT1_TINT34,
 308         },
 309 };
 310
 311 /*-------------------------------------------------------------------------*/
 312
 313 static int __init davinci_init_devices(void)
 314 {
 315         /* please keep these calls, and their implementations above,
 316          * in alphabetical order so they're easier to sort through.
 317          */
 318         davinci_init_wdt();
 319
 320         return 0;
 321 }
 322 arch_initcall(davinci_init_devices);
 323