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 #include <linux/reboot.h>
  17
  18 #include <mach/hardware.h>
  19 #include <linux/platform_data/i2c-davinci.h>
  20 #include <mach/irqs.h>
  21 #include <mach/cputype.h>
  22 #include <mach/mux.h>
  23 #include <linux/platform_data/mmc-davinci.h>
  24 #include <mach/time.h>
  25 #include <linux/platform_data/edma.h>
  26
  27
  28 #include "davinci.h"
  29 #include "clock.h"
  30
  31 #define DAVINCI_I2C_BASE             0x01C21000
  32 #define DAVINCI_ATA_BASE             0x01C66000
  33 #define DAVINCI_MMCSD0_BASE          0x01E10000
  34 #define DM355_MMCSD0_BASE            0x01E11000
  35 #define DM355_MMCSD1_BASE            0x01E00000
  36 #define DM365_MMCSD0_BASE            0x01D11000
  37 #define DM365_MMCSD1_BASE            0x01D00000
  38
  39 #define DAVINCI_DMA_MMCRXEVT    26
  40 #define DAVINCI_DMA_MMCTXEVT    27
  41
  42 void __iomem  *davinci_sysmod_base;
  43
  44 void davinci_map_sysmod(void)
  45 {
  46         davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
  47                                               0x800);
  48         /*
  49          * Throw a bug since a lot of board initialization code depends
  50          * on system module availability. ioremap() failing this early
  51          * need careful looking into anyway.
  52          */
  53         BUG_ON(!davinci_sysmod_base);
  54 }
  55
  56 static struct resource i2c_resources[] = {
  57         {
  58                 .start          = DAVINCI_I2C_BASE,
  59                 .end            = DAVINCI_I2C_BASE + 0x40,
  60                 .flags          = IORESOURCE_MEM,
  61         },
  62         {
  63                 .start          = IRQ_I2C,
  64                 .flags          = IORESOURCE_IRQ,
  65         },
  66 };
  67
  68 static struct platform_device davinci_i2c_device = {
  69         .name           = "i2c_davinci",
  70         .id             = 1,
  71         .num_resources  = ARRAY_SIZE(i2c_resources),
  72         .resource       = i2c_resources,
  73 };
  74
  75 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  76 {
  77         if (cpu_is_davinci_dm644x())
  78                 davinci_cfg_reg(DM644X_I2C);
  79
  80         davinci_i2c_device.dev.platform_data = pdata;
  81         (void) platform_device_register(&davinci_i2c_device);
  82 }
  83
  84 static struct resource ide_resources[] = {
  85         {
  86                 .start          = DAVINCI_ATA_BASE,
  87                 .end            = DAVINCI_ATA_BASE + 0x7ff,
  88                 .flags          = IORESOURCE_MEM,
  89         },
  90         {
  91                 .start          = IRQ_IDE,
  92                 .end            = IRQ_IDE,
  93                 .flags          = IORESOURCE_IRQ,
  94         },
  95 };
  96
  97 static u64 ide_dma_mask = DMA_BIT_MASK(32);
  98
  99 static struct platform_device ide_device = {
 100         .name           = "palm_bk3710",
 101         .id             = -1,
 102         .resource       = ide_resources,
 103         .num_resources  = ARRAY_SIZE(ide_resources),
 104         .dev = {
 105                 .dma_mask               = &ide_dma_mask,
 106                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 107         },
 108 };
 109
 110 void __init davinci_init_ide(void)
 111 {
 112         if (cpu_is_davinci_dm644x()) {
 113                 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
 114                 davinci_cfg_reg(DM644X_ATAEN);
 115                 davinci_cfg_reg(DM644X_HDIREN);
 116         } else if (cpu_is_davinci_dm646x()) {
 117                 /* IRQ_DM646X_IDE is the same as IRQ_IDE */
 118                 davinci_cfg_reg(DM646X_ATAEN);
 119         } else {
 120                 WARN_ON(1);
 121                 return;
 122         }
 123
 124         platform_device_register(&ide_device);
 125 }
 126
 127 #if IS_ENABLED(CONFIG_MMC_DAVINCI)
 128
 129 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
 130
 131 static struct resource mmcsd0_resources[] = {
 132         {
 133                 /* different on dm355 */
 134                 .start = DAVINCI_MMCSD0_BASE,
 135                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
 136                 .flags = IORESOURCE_MEM,
 137         },
 138         /* IRQs:  MMC/SD, then SDIO */
 139         {
 140                 .start = IRQ_MMCINT,
 141                 .flags = IORESOURCE_IRQ,
 142         }, {
 143                 /* different on dm355 */
 144                 .start = IRQ_SDIOINT,
 145                 .flags = IORESOURCE_IRQ,
 146         },
 147         /* DMA channels: RX, then TX */
 148         {
 149                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
 150                 .flags = IORESOURCE_DMA,
 151         }, {
 152                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
 153                 .flags = IORESOURCE_DMA,
 154         },
 155 };
 156
 157 static struct platform_device davinci_mmcsd0_device = {
 158         .name = "dm6441-mmc",
 159         .id = 0,
 160         .dev = {
 161                 .dma_mask = &mmcsd0_dma_mask,
 162                 .coherent_dma_mask = DMA_BIT_MASK(32),
 163         },
 164         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 165         .resource = mmcsd0_resources,
 166 };
 167
 168 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 169
 170 static struct resource mmcsd1_resources[] = {
 171         {
 172                 .start = DM355_MMCSD1_BASE,
 173                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 174                 .flags = IORESOURCE_MEM,
 175         },
 176         /* IRQs:  MMC/SD, then SDIO */
 177         {
 178                 .start = IRQ_DM355_MMCINT1,
 179                 .flags = IORESOURCE_IRQ,
 180         }, {
 181                 .start = IRQ_DM355_SDIOINT1,
 182                 .flags = IORESOURCE_IRQ,
 183         },
 184         /* DMA channels: RX, then TX */
 185         {
 186                 .start = EDMA_CTLR_CHAN(0, 30), /* rx */
 187                 .flags = IORESOURCE_DMA,
 188         }, {
 189                 .start = EDMA_CTLR_CHAN(0, 31), /* tx */
 190                 .flags = IORESOURCE_DMA,
 191         },
 192 };
 193
 194 static struct platform_device davinci_mmcsd1_device = {
 195         .name = "dm6441-mmc",
 196         .id = 1,
 197         .dev = {
 198                 .dma_mask = &mmcsd1_dma_mask,
 199                 .coherent_dma_mask = DMA_BIT_MASK(32),
 200         },
 201         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 202         .resource = mmcsd1_resources,
 203 };
 204
 205
 206 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 207 {
 208         struct platform_device  *pdev = NULL;
 209
 210         if (WARN_ON(cpu_is_davinci_dm646x()))
 211                 return;
 212
 213         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 214          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 215          *
 216          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 217          * not handled right here ...
 218          */
 219         switch (module) {
 220         case 1:
 221                 if (cpu_is_davinci_dm355()) {
 222                         /* REVISIT we may not need all these pins if e.g. this
 223                          * is a hard-wired SDIO device...
 224                          */
 225                         davinci_cfg_reg(DM355_SD1_CMD);
 226                         davinci_cfg_reg(DM355_SD1_CLK);
 227                         davinci_cfg_reg(DM355_SD1_DATA0);
 228                         davinci_cfg_reg(DM355_SD1_DATA1);
 229                         davinci_cfg_reg(DM355_SD1_DATA2);
 230                         davinci_cfg_reg(DM355_SD1_DATA3);
 231                 } else if (cpu_is_davinci_dm365()) {
 232                         /* Configure pull down control */
 233                         unsigned v;
 234
 235                         v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 236                         __raw_writel(v & ~0xfc0,
 237                                         DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 238
 239                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 240                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 241                                                         SZ_4K - 1;
 242                         mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
 243                         davinci_mmcsd1_device.name = "da830-mmc";
 244                 } else
 245                         break;
 246
 247                 pdev = &davinci_mmcsd1_device;
 248                 break;
 249         case 0:
 250                 if (cpu_is_davinci_dm355()) {
 251                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 252                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 253                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 254
 255                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 256                         davinci_cfg_reg(DM355_MMCSD0);
 257
 258                         /* enable RX EDMA */
 259                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 260                 } else if (cpu_is_davinci_dm365()) {
 261                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 262                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 263                                                         SZ_4K - 1;
 264                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
 265                         davinci_mmcsd0_device.name = "da830-mmc";
 266                 } else if (cpu_is_davinci_dm644x()) {
 267                         /* REVISIT: should this be in board-init code? */
 268                         /* Power-on 3.3V IO cells */
 269                         __raw_writel(0,
 270                                 DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
 271                         /*Set up the pull regiter for MMC */
 272                         davinci_cfg_reg(DM644X_MSTK);
 273                 }
 274
 275                 pdev = &davinci_mmcsd0_device;
 276                 break;
 277         }
 278
 279         if (WARN_ON(!pdev))
 280                 return;
 281
 282         pdev->dev.platform_data = config;
 283         platform_device_register(pdev);
 284 }
 285
 286 #else
 287
 288 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 289 {
 290 }
 291
 292 #endif
 293
 294 /*-------------------------------------------------------------------------*/
 295
 296 static struct resource wdt_resources[] = {
 297         {
 298                 .start  = DAVINCI_WDOG_BASE,
 299                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 300                 .flags  = IORESOURCE_MEM,
 301         },
 302 };
 303
 304 struct platform_device davinci_wdt_device = {
 305         .name           = "davinci-wdt",
 306         .id             = -1,
 307         .num_resources  = ARRAY_SIZE(wdt_resources),
 308         .resource       = wdt_resources,
 309 };
 310
 311 void davinci_restart(enum reboot_mode mode, const char *cmd)
 312 {
 313         davinci_watchdog_reset(&davinci_wdt_device);
 314 }
 315
 316 static void davinci_init_wdt(void)
 317 {
 318         platform_device_register(&davinci_wdt_device);
 319 }
 320
 321 static struct platform_device davinci_gpio_device = {
 322         .name   = "davinci_gpio",
 323         .id     = -1,
 324 };
 325
 326 int davinci_gpio_register(struct resource *res, int size, void *pdata)
 327 {
 328         davinci_gpio_device.resource = res;
 329         davinci_gpio_device.num_resources = size;
 330         davinci_gpio_device.dev.platform_data = pdata;
 331         return platform_device_register(&davinci_gpio_device);
 332 }
 333
 334 /*-------------------------------------------------------------------------*/
 335
 336 /*-------------------------------------------------------------------------*/
 337
 338 struct davinci_timer_instance davinci_timer_instance[2] = {
 339         {
 340                 .base           = DAVINCI_TIMER0_BASE,
 341                 .bottom_irq     = IRQ_TINT0_TINT12,
 342                 .top_irq        = IRQ_TINT0_TINT34,
 343         },
 344         {
 345                 .base           = DAVINCI_TIMER1_BASE,
 346                 .bottom_irq     = IRQ_TINT1_TINT12,
 347                 .top_irq        = IRQ_TINT1_TINT34,
 348         },
 349 };
 350
 351 /*-------------------------------------------------------------------------*/
 352
 353 static int __init davinci_init_devices(void)
 354 {
 355         /* please keep these calls, and their implementations above,
 356          * in alphabetical order so they're easier to sort through.
 357          */
 358         davinci_init_wdt();
 359
 360         return 0;
 361 }
 362 arch_initcall(davinci_init_devices);
 363