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 <linux/platform_data/i2c-davinci.h>
  19 #include <mach/irqs.h>
  20 #include <mach/cputype.h>
  21 #include <mach/mux.h>
  22 #include <mach/edma.h>
  23 #include <linux/platform_data/mmc-davinci.h>
  24 #include <mach/time.h>
  25
  26 #include "davinci.h"
  27 #include "clock.h"
  28
  29 #define DAVINCI_I2C_BASE             0x01C21000
  30 #define DAVINCI_ATA_BASE             0x01C66000
  31 #define DAVINCI_MMCSD0_BASE          0x01E10000
  32 #define DM355_MMCSD0_BASE            0x01E11000
  33 #define DM355_MMCSD1_BASE            0x01E00000
  34 #define DM365_MMCSD0_BASE            0x01D11000
  35 #define DM365_MMCSD1_BASE            0x01D00000
  36
  37 void __iomem  *davinci_sysmod_base;
  38
  39 void davinci_map_sysmod(void)
  40 {
  41         davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
  42                                               0x800);
  43         /*
  44          * Throw a bug since a lot of board initialization code depends
  45          * on system module availability. ioremap() failing this early
  46          * need careful looking into anyway.
  47          */
  48         BUG_ON(!davinci_sysmod_base);
  49 }
  50
  51 static struct resource i2c_resources[] = {
  52         {
  53                 .start          = DAVINCI_I2C_BASE,
  54                 .end            = DAVINCI_I2C_BASE + 0x40,
  55                 .flags          = IORESOURCE_MEM,
  56         },
  57         {
  58                 .start          = IRQ_I2C,
  59                 .flags          = IORESOURCE_IRQ,
  60         },
  61 };
  62
  63 static struct platform_device davinci_i2c_device = {
  64         .name           = "i2c_davinci",
  65         .id             = 1,
  66         .num_resources  = ARRAY_SIZE(i2c_resources),
  67         .resource       = i2c_resources,
  68 };
  69
  70 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  71 {
  72         if (cpu_is_davinci_dm644x())
  73                 davinci_cfg_reg(DM644X_I2C);
  74
  75         davinci_i2c_device.dev.platform_data = pdata;
  76         (void) platform_device_register(&davinci_i2c_device);
  77 }
  78
  79 static struct resource ide_resources[] = {
  80         {
  81                 .start          = DAVINCI_ATA_BASE,
  82                 .end            = DAVINCI_ATA_BASE + 0x7ff,
  83                 .flags          = IORESOURCE_MEM,
  84         },
  85         {
  86                 .start          = IRQ_IDE,
  87                 .end            = IRQ_IDE,
  88                 .flags          = IORESOURCE_IRQ,
  89         },
  90 };
  91
  92 static u64 ide_dma_mask = DMA_BIT_MASK(32);
  93
  94 static struct platform_device ide_device = {
  95         .name           = "palm_bk3710",
  96         .id             = -1,
  97         .resource       = ide_resources,
  98         .num_resources  = ARRAY_SIZE(ide_resources),
  99         .dev = {
 100                 .dma_mask               = &ide_dma_mask,
 101                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 102         },
 103 };
 104
 105 void __init davinci_init_ide(void)
 106 {
 107         if (cpu_is_davinci_dm644x()) {
 108                 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
 109                 davinci_cfg_reg(DM644X_ATAEN);
 110                 davinci_cfg_reg(DM644X_HDIREN);
 111         } else if (cpu_is_davinci_dm646x()) {
 112                 /* IRQ_DM646X_IDE is the same as IRQ_IDE */
 113                 davinci_cfg_reg(DM646X_ATAEN);
 114         } else {
 115                 WARN_ON(1);
 116                 return;
 117         }
 118
 119         platform_device_register(&ide_device);
 120 }
 121
 122 #if     defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
 123
 124 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
 125
 126 static struct resource mmcsd0_resources[] = {
 127         {
 128                 /* different on dm355 */
 129                 .start = DAVINCI_MMCSD0_BASE,
 130                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
 131                 .flags = IORESOURCE_MEM,
 132         },
 133         /* IRQs:  MMC/SD, then SDIO */
 134         {
 135                 .start = IRQ_MMCINT,
 136                 .flags = IORESOURCE_IRQ,
 137         }, {
 138                 /* different on dm355 */
 139                 .start = IRQ_SDIOINT,
 140                 .flags = IORESOURCE_IRQ,
 141         },
 142         /* DMA channels: RX, then TX */
 143         {
 144                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
 145                 .flags = IORESOURCE_DMA,
 146         }, {
 147                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
 148                 .flags = IORESOURCE_DMA,
 149         },
 150 };
 151
 152 static struct platform_device davinci_mmcsd0_device = {
 153         .name = "davinci_mmc",
 154         .id = 0,
 155         .dev = {
 156                 .dma_mask = &mmcsd0_dma_mask,
 157                 .coherent_dma_mask = DMA_BIT_MASK(32),
 158         },
 159         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 160         .resource = mmcsd0_resources,
 161 };
 162
 163 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 164
 165 static struct resource mmcsd1_resources[] = {
 166         {
 167                 .start = DM355_MMCSD1_BASE,
 168                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 169                 .flags = IORESOURCE_MEM,
 170         },
 171         /* IRQs:  MMC/SD, then SDIO */
 172         {
 173                 .start = IRQ_DM355_MMCINT1,
 174                 .flags = IORESOURCE_IRQ,
 175         }, {
 176                 .start = IRQ_DM355_SDIOINT1,
 177                 .flags = IORESOURCE_IRQ,
 178         },
 179         /* DMA channels: RX, then TX */
 180         {
 181                 .start = EDMA_CTLR_CHAN(0, 30), /* rx */
 182                 .flags = IORESOURCE_DMA,
 183         }, {
 184                 .start = EDMA_CTLR_CHAN(0, 31), /* tx */
 185                 .flags = IORESOURCE_DMA,
 186         },
 187 };
 188
 189 static struct platform_device davinci_mmcsd1_device = {
 190         .name = "davinci_mmc",
 191         .id = 1,
 192         .dev = {
 193                 .dma_mask = &mmcsd1_dma_mask,
 194                 .coherent_dma_mask = DMA_BIT_MASK(32),
 195         },
 196         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 197         .resource = mmcsd1_resources,
 198 };
 199
 200
 201 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 202 {
 203         struct platform_device  *pdev = NULL;
 204
 205         if (WARN_ON(cpu_is_davinci_dm646x()))
 206                 return;
 207
 208         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 209          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 210          *
 211          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 212          * not handled right here ...
 213          */
 214         switch (module) {
 215         case 1:
 216                 if (cpu_is_davinci_dm355()) {
 217                         /* REVISIT we may not need all these pins if e.g. this
 218                          * is a hard-wired SDIO device...
 219                          */
 220                         davinci_cfg_reg(DM355_SD1_CMD);
 221                         davinci_cfg_reg(DM355_SD1_CLK);
 222                         davinci_cfg_reg(DM355_SD1_DATA0);
 223                         davinci_cfg_reg(DM355_SD1_DATA1);
 224                         davinci_cfg_reg(DM355_SD1_DATA2);
 225                         davinci_cfg_reg(DM355_SD1_DATA3);
 226                 } else if (cpu_is_davinci_dm365()) {
 227                         /* Configure pull down control */
 228                         unsigned v;
 229
 230                         v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 231                         __raw_writel(v & ~0xfc0,
 232                                         DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 233
 234                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 235                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 236                                                         SZ_4K - 1;
 237                         mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
 238                 } else
 239                         break;
 240
 241                 pdev = &davinci_mmcsd1_device;
 242                 break;
 243         case 0:
 244                 if (cpu_is_davinci_dm355()) {
 245                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 246                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 247                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 248
 249                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 250                         davinci_cfg_reg(DM355_MMCSD0);
 251
 252                         /* enable RX EDMA */
 253                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 254                 } else if (cpu_is_davinci_dm365()) {
 255                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 256                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 257                                                         SZ_4K - 1;
 258                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
 259                 } else if (cpu_is_davinci_dm644x()) {
 260                         /* REVISIT: should this be in board-init code? */
 261                         /* Power-on 3.3V IO cells */
 262                         __raw_writel(0,
 263                                 DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
 264                         /*Set up the pull regiter for MMC */
 265                         davinci_cfg_reg(DM644X_MSTK);
 266                 }
 267
 268                 pdev = &davinci_mmcsd0_device;
 269                 break;
 270         }
 271
 272         if (WARN_ON(!pdev))
 273                 return;
 274
 275         pdev->dev.platform_data = config;
 276         platform_device_register(pdev);
 277 }
 278
 279 #else
 280
 281 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 282 {
 283 }
 284
 285 #endif
 286
 287 /*-------------------------------------------------------------------------*/
 288
 289 static struct resource wdt_resources[] = {
 290         {
 291                 .start  = DAVINCI_WDOG_BASE,
 292                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 293                 .flags  = IORESOURCE_MEM,
 294         },
 295 };
 296
 297 struct platform_device davinci_wdt_device = {
 298         .name           = "watchdog",
 299         .id             = -1,
 300         .num_resources  = ARRAY_SIZE(wdt_resources),
 301         .resource       = wdt_resources,
 302 };
 303
 304 void davinci_restart(char mode, const char *cmd)
 305 {
 306         davinci_watchdog_reset(&davinci_wdt_device);
 307 }
 308
 309 static void davinci_init_wdt(void)
 310 {
 311         platform_device_register(&davinci_wdt_device);
 312 }
 313
 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_wdt();
 339
 340         return 0;
 341 }
 342 arch_initcall(davinci_init_devices);
 343