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 /* System control register offsets */
  37 #define DM64XX_VDD3P3V_PWDN     0x48
  38
  39 static struct resource i2c_resources[] = {
  40         {
  41                 .start          = DAVINCI_I2C_BASE,
  42                 .end            = DAVINCI_I2C_BASE + 0x40,
  43                 .flags          = IORESOURCE_MEM,
  44         },
  45         {
  46                 .start          = IRQ_I2C,
  47                 .flags          = IORESOURCE_IRQ,
  48         },
  49 };
  50
  51 static struct platform_device davinci_i2c_device = {
  52         .name           = "i2c_davinci",
  53         .id             = 1,
  54         .num_resources  = ARRAY_SIZE(i2c_resources),
  55         .resource       = i2c_resources,
  56 };
  57
  58 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  59 {
  60         if (cpu_is_davinci_dm644x())
  61                 davinci_cfg_reg(DM644X_I2C);
  62
  63         davinci_i2c_device.dev.platform_data = pdata;
  64         (void) platform_device_register(&davinci_i2c_device);
  65 }
  66
  67 static struct resource ide_resources[] = {
  68         {
  69                 .start          = DAVINCI_ATA_BASE,
  70                 .end            = DAVINCI_ATA_BASE + 0x7ff,
  71                 .flags          = IORESOURCE_MEM,
  72         },
  73         {
  74                 .start          = IRQ_IDE,
  75                 .end            = IRQ_IDE,
  76                 .flags          = IORESOURCE_IRQ,
  77         },
  78 };
  79
  80 static u64 ide_dma_mask = DMA_BIT_MASK(32);
  81
  82 static struct platform_device ide_device = {
  83         .name           = "palm_bk3710",
  84         .id             = -1,
  85         .resource       = ide_resources,
  86         .num_resources  = ARRAY_SIZE(ide_resources),
  87         .dev = {
  88                 .dma_mask               = &ide_dma_mask,
  89                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  90         },
  91 };
  92
  93 void __init davinci_init_ide(void)
  94 {
  95         if (cpu_is_davinci_dm644x()) {
  96                 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
  97                 davinci_cfg_reg(DM644X_ATAEN);
  98                 davinci_cfg_reg(DM644X_HDIREN);
  99         } else if (cpu_is_davinci_dm646x()) {
 100                 /* IRQ_DM646X_IDE is the same as IRQ_IDE */
 101                 davinci_cfg_reg(DM646X_ATAEN);
 102         } else {
 103                 WARN_ON(1);
 104                 return;
 105         }
 106
 107         platform_device_register(&ide_device);
 108 }
 109
 110 #if     defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
 111
 112 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
 113
 114 static struct resource mmcsd0_resources[] = {
 115         {
 116                 /* different on dm355 */
 117                 .start = DAVINCI_MMCSD0_BASE,
 118                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
 119                 .flags = IORESOURCE_MEM,
 120         },
 121         /* IRQs:  MMC/SD, then SDIO */
 122         {
 123                 .start = IRQ_MMCINT,
 124                 .flags = IORESOURCE_IRQ,
 125         }, {
 126                 /* different on dm355 */
 127                 .start = IRQ_SDIOINT,
 128                 .flags = IORESOURCE_IRQ,
 129         },
 130         /* DMA channels: RX, then TX */
 131         {
 132                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
 133                 .flags = IORESOURCE_DMA,
 134         }, {
 135                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
 136                 .flags = IORESOURCE_DMA,
 137         },
 138 };
 139
 140 static struct platform_device davinci_mmcsd0_device = {
 141         .name = "davinci_mmc",
 142         .id = 0,
 143         .dev = {
 144                 .dma_mask = &mmcsd0_dma_mask,
 145                 .coherent_dma_mask = DMA_BIT_MASK(32),
 146         },
 147         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 148         .resource = mmcsd0_resources,
 149 };
 150
 151 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 152
 153 static struct resource mmcsd1_resources[] = {
 154         {
 155                 .start = DM355_MMCSD1_BASE,
 156                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 157                 .flags = IORESOURCE_MEM,
 158         },
 159         /* IRQs:  MMC/SD, then SDIO */
 160         {
 161                 .start = IRQ_DM355_MMCINT1,
 162                 .flags = IORESOURCE_IRQ,
 163         }, {
 164                 .start = IRQ_DM355_SDIOINT1,
 165                 .flags = IORESOURCE_IRQ,
 166         },
 167         /* DMA channels: RX, then TX */
 168         {
 169                 .start = EDMA_CTLR_CHAN(0, 30), /* rx */
 170                 .flags = IORESOURCE_DMA,
 171         }, {
 172                 .start = EDMA_CTLR_CHAN(0, 31), /* tx */
 173                 .flags = IORESOURCE_DMA,
 174         },
 175 };
 176
 177 static struct platform_device davinci_mmcsd1_device = {
 178         .name = "davinci_mmc",
 179         .id = 1,
 180         .dev = {
 181                 .dma_mask = &mmcsd1_dma_mask,
 182                 .coherent_dma_mask = DMA_BIT_MASK(32),
 183         },
 184         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 185         .resource = mmcsd1_resources,
 186 };
 187
 188
 189 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 190 {
 191         struct platform_device  *pdev = NULL;
 192
 193         if (WARN_ON(cpu_is_davinci_dm646x()))
 194                 return;
 195
 196         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 197          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 198          *
 199          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 200          * not handled right here ...
 201          */
 202         switch (module) {
 203         case 1:
 204                 if (cpu_is_davinci_dm355()) {
 205                         /* REVISIT we may not need all these pins if e.g. this
 206                          * is a hard-wired SDIO device...
 207                          */
 208                         davinci_cfg_reg(DM355_SD1_CMD);
 209                         davinci_cfg_reg(DM355_SD1_CLK);
 210                         davinci_cfg_reg(DM355_SD1_DATA0);
 211                         davinci_cfg_reg(DM355_SD1_DATA1);
 212                         davinci_cfg_reg(DM355_SD1_DATA2);
 213                         davinci_cfg_reg(DM355_SD1_DATA3);
 214                 } else if (cpu_is_davinci_dm365()) {
 215                         void __iomem *pupdctl1 =
 216                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE + 0x7c);
 217
 218                         /* Configure pull down control */
 219                         __raw_writel((__raw_readl(pupdctl1) & ~0xfc0),
 220                                         pupdctl1);
 221
 222                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 223                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 224                                                         SZ_4K - 1;
 225                         mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
 226                 } else
 227                         break;
 228
 229                 pdev = &davinci_mmcsd1_device;
 230                 break;
 231         case 0:
 232                 if (cpu_is_davinci_dm355()) {
 233                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 234                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 235                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 236
 237                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 238                         davinci_cfg_reg(DM355_MMCSD0);
 239
 240                         /* enable RX EDMA */
 241                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 242                 } else if (cpu_is_davinci_dm365()) {
 243                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 244                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 245                                                         SZ_4K - 1;
 246                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
 247                 } else if (cpu_is_davinci_dm644x()) {
 248                         /* REVISIT: should this be in board-init code? */
 249                         void __iomem *base =
 250                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
 251
 252                         /* Power-on 3.3V IO cells */
 253                         __raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
 254                         /*Set up the pull regiter for MMC */
 255                         davinci_cfg_reg(DM644X_MSTK);
 256                 }
 257
 258                 pdev = &davinci_mmcsd0_device;
 259                 break;
 260         }
 261
 262         if (WARN_ON(!pdev))
 263                 return;
 264
 265         pdev->dev.platform_data = config;
 266         platform_device_register(pdev);
 267 }
 268
 269 #else
 270
 271 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 272 {
 273 }
 274
 275 #endif
 276
 277 /*-------------------------------------------------------------------------*/
 278
 279 static struct resource wdt_resources[] = {
 280         {
 281                 .start  = DAVINCI_WDOG_BASE,
 282                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 283                 .flags  = IORESOURCE_MEM,
 284         },
 285 };
 286
 287 struct platform_device davinci_wdt_device = {
 288         .name           = "watchdog",
 289         .id             = -1,
 290         .num_resources  = ARRAY_SIZE(wdt_resources),
 291         .resource       = wdt_resources,
 292 };
 293
 294 void davinci_restart(char mode, const char *cmd)
 295 {
 296         davinci_watchdog_reset(&davinci_wdt_device);
 297 }
 298
 299 static void davinci_init_wdt(void)
 300 {
 301         platform_device_register(&davinci_wdt_device);
 302 }
 303
 304 /*-------------------------------------------------------------------------*/
 305
 306 static struct platform_device davinci_pcm_device = {
 307         .name           = "davinci-pcm-audio",
 308         .id             = -1,
 309 };
 310
 311 static void davinci_init_pcm(void)
 312 {
 313         platform_device_register(&davinci_pcm_device);
 314 }
 315
 316 /*-------------------------------------------------------------------------*/
 317
 318 struct davinci_timer_instance davinci_timer_instance[2] = {
 319         {
 320                 .base           = DAVINCI_TIMER0_BASE,
 321                 .bottom_irq     = IRQ_TINT0_TINT12,
 322                 .top_irq        = IRQ_TINT0_TINT34,
 323         },
 324         {
 325                 .base           = DAVINCI_TIMER1_BASE,
 326                 .bottom_irq     = IRQ_TINT1_TINT12,
 327                 .top_irq        = IRQ_TINT1_TINT34,
 328         },
 329 };
 330
 331 /*-------------------------------------------------------------------------*/
 332
 333 static int __init davinci_init_devices(void)
 334 {
 335         /* please keep these calls, and their implementations above,
 336          * in alphabetical order so they're easier to sort through.
 337          */
 338         davinci_init_pcm();
 339         davinci_init_wdt();
 340
 341         return 0;
 342 }
 343 arch_initcall(davinci_init_devices);
 344