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