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