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/platform_data/i2c-davinci.h>
  15 #include <linux/platform_data/mmc-davinci.h>
  16 #include <linux/platform_data/edma.h>
  17 #include <linux/dma-mapping.h>
  18 #include <linux/io.h>
  19 #include <linux/reboot.h>
  20
  21 #include <mach/hardware.h>
  22 #include <mach/cputype.h>
  23 #include <mach/mux.h>
  24 #include <mach/time.h>
  25
  26 #include "davinci.h"
  27 #include "irqs.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          = DAVINCI_INTC_IRQ(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          = DAVINCI_INTC_IRQ(IRQ_IDE),
  87                 .end            = DAVINCI_INTC_IRQ(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 IS_ENABLED(CONFIG_MMC_DAVINCI)
 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 = DAVINCI_INTC_IRQ(IRQ_MMCINT),
 136                 .flags = IORESOURCE_IRQ,
 137         }, {
 138                 /* different on dm355 */
 139                 .start = DAVINCI_INTC_IRQ(IRQ_SDIOINT),
 140                 .flags = IORESOURCE_IRQ,
 141         },
 142 };
 143
 144 static struct platform_device davinci_mmcsd0_device = {
 145         .name = "dm6441-mmc",
 146         .id = 0,
 147         .dev = {
 148                 .dma_mask = &mmcsd0_dma_mask,
 149                 .coherent_dma_mask = DMA_BIT_MASK(32),
 150         },
 151         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 152         .resource = mmcsd0_resources,
 153 };
 154
 155 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 156
 157 static struct resource mmcsd1_resources[] = {
 158         {
 159                 .start = DM355_MMCSD1_BASE,
 160                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 161                 .flags = IORESOURCE_MEM,
 162         },
 163         /* IRQs:  MMC/SD, then SDIO */
 164         {
 165                 .start = DAVINCI_INTC_IRQ(IRQ_DM355_MMCINT1),
 166                 .flags = IORESOURCE_IRQ,
 167         }, {
 168                 .start = DAVINCI_INTC_IRQ(IRQ_DM355_SDIOINT1),
 169                 .flags = IORESOURCE_IRQ,
 170         },
 171 };
 172
 173 static struct platform_device davinci_mmcsd1_device = {
 174         .name = "dm6441-mmc",
 175         .id = 1,
 176         .dev = {
 177                 .dma_mask = &mmcsd1_dma_mask,
 178                 .coherent_dma_mask = DMA_BIT_MASK(32),
 179         },
 180         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 181         .resource = mmcsd1_resources,
 182 };
 183
 184
 185 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 186 {
 187         struct platform_device  *pdev = NULL;
 188
 189         if (WARN_ON(cpu_is_davinci_dm646x()))
 190                 return;
 191
 192         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 193          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 194          *
 195          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 196          * not handled right here ...
 197          */
 198         switch (module) {
 199         case 1:
 200                 if (cpu_is_davinci_dm355()) {
 201                         /* REVISIT we may not need all these pins if e.g. this
 202                          * is a hard-wired SDIO device...
 203                          */
 204                         davinci_cfg_reg(DM355_SD1_CMD);
 205                         davinci_cfg_reg(DM355_SD1_CLK);
 206                         davinci_cfg_reg(DM355_SD1_DATA0);
 207                         davinci_cfg_reg(DM355_SD1_DATA1);
 208                         davinci_cfg_reg(DM355_SD1_DATA2);
 209                         davinci_cfg_reg(DM355_SD1_DATA3);
 210                 } else if (cpu_is_davinci_dm365()) {
 211                         /* Configure pull down control */
 212                         unsigned v;
 213
 214                         v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 215                         __raw_writel(v & ~0xfc0,
 216                                         DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 217
 218                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 219                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 220                                                         SZ_4K - 1;
 221                         mmcsd1_resources[2].start = DAVINCI_INTC_IRQ(
 222                                                         IRQ_DM365_SDIOINT1);
 223                         davinci_mmcsd1_device.name = "da830-mmc";
 224                 } else
 225                         break;
 226
 227                 pdev = &davinci_mmcsd1_device;
 228                 break;
 229         case 0:
 230                 if (cpu_is_davinci_dm355()) {
 231                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 232                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 233                         mmcsd0_resources[2].start = DAVINCI_INTC_IRQ(
 234                                                         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 = DAVINCI_INTC_IRQ(
 246                                                         IRQ_DM365_SDIOINT0);
 247                         davinci_mmcsd0_device.name = "da830-mmc";
 248                 } else if (cpu_is_davinci_dm644x()) {
 249                         /* REVISIT: should this be in board-init code? */
 250                         /* Power-on 3.3V IO cells */
 251                         __raw_writel(0,
 252                                 DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
 253                         /*Set up the pull regiter for MMC */
 254                         davinci_cfg_reg(DM644X_MSTK);
 255                 }
 256
 257                 pdev = &davinci_mmcsd0_device;
 258                 break;
 259         }
 260
 261         if (WARN_ON(!pdev))
 262                 return;
 263
 264         pdev->dev.platform_data = config;
 265         platform_device_register(pdev);
 266 }
 267
 268 #else
 269
 270 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 271 {
 272 }
 273
 274 #endif
 275
 276 /*-------------------------------------------------------------------------*/
 277
 278 static struct resource wdt_resources[] = {
 279         {
 280                 .start  = DAVINCI_WDOG_BASE,
 281                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 282                 .flags  = IORESOURCE_MEM,
 283         },
 284 };
 285
 286 static struct platform_device davinci_wdt_device = {
 287         .name           = "davinci-wdt",
 288         .id             = -1,
 289         .num_resources  = ARRAY_SIZE(wdt_resources),
 290         .resource       = wdt_resources,
 291 };
 292
 293 int davinci_init_wdt(void)
 294 {
 295         return platform_device_register(&davinci_wdt_device);
 296 }
 297
 298 static struct platform_device davinci_gpio_device = {
 299         .name   = "davinci_gpio",
 300         .id     = -1,
 301 };
 302
 303 int davinci_gpio_register(struct resource *res, int size, void *pdata)
 304 {
 305         davinci_gpio_device.resource = res;
 306         davinci_gpio_device.num_resources = size;
 307         davinci_gpio_device.dev.platform_data = pdata;
 308         return platform_device_register(&davinci_gpio_device);
 309 }
 310
 311 /*-------------------------------------------------------------------------*/
 312
 313 /*-------------------------------------------------------------------------*/
 314
 315 struct davinci_timer_instance davinci_timer_instance[2] = {
 316         {
 317                 .base           = DAVINCI_TIMER0_BASE,
 318                 .bottom_irq     = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT12),
 319                 .top_irq        = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT34),
 320         },
 321         {
 322                 .base           = DAVINCI_TIMER1_BASE,
 323                 .bottom_irq     = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT12),
 324                 .top_irq        = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34),
 325         },
 326 };
 327