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 };
 148
 149 static struct platform_device davinci_mmcsd0_device = {
 150         .name = "dm6441-mmc",
 151         .id = 0,
 152         .dev = {
 153                 .dma_mask = &mmcsd0_dma_mask,
 154                 .coherent_dma_mask = DMA_BIT_MASK(32),
 155         },
 156         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 157         .resource = mmcsd0_resources,
 158 };
 159
 160 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 161
 162 static struct resource mmcsd1_resources[] = {
 163         {
 164                 .start = DM355_MMCSD1_BASE,
 165                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 166                 .flags = IORESOURCE_MEM,
 167         },
 168         /* IRQs:  MMC/SD, then SDIO */
 169         {
 170                 .start = IRQ_DM355_MMCINT1,
 171                 .flags = IORESOURCE_IRQ,
 172         }, {
 173                 .start = IRQ_DM355_SDIOINT1,
 174                 .flags = IORESOURCE_IRQ,
 175         },
 176 };
 177
 178 static struct platform_device davinci_mmcsd1_device = {
 179         .name = "dm6441-mmc",
 180         .id = 1,
 181         .dev = {
 182                 .dma_mask = &mmcsd1_dma_mask,
 183                 .coherent_dma_mask = DMA_BIT_MASK(32),
 184         },
 185         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 186         .resource = mmcsd1_resources,
 187 };
 188
 189
 190 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 191 {
 192         struct platform_device  *pdev = NULL;
 193
 194         if (WARN_ON(cpu_is_davinci_dm646x()))
 195                 return;
 196
 197         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 198          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 199          *
 200          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 201          * not handled right here ...
 202          */
 203         switch (module) {
 204         case 1:
 205                 if (cpu_is_davinci_dm355()) {
 206                         /* REVISIT we may not need all these pins if e.g. this
 207                          * is a hard-wired SDIO device...
 208                          */
 209                         davinci_cfg_reg(DM355_SD1_CMD);
 210                         davinci_cfg_reg(DM355_SD1_CLK);
 211                         davinci_cfg_reg(DM355_SD1_DATA0);
 212                         davinci_cfg_reg(DM355_SD1_DATA1);
 213                         davinci_cfg_reg(DM355_SD1_DATA2);
 214                         davinci_cfg_reg(DM355_SD1_DATA3);
 215                 } else if (cpu_is_davinci_dm365()) {
 216                         /* Configure pull down control */
 217                         unsigned v;
 218
 219                         v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 220                         __raw_writel(v & ~0xfc0,
 221                                         DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 222
 223                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 224                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 225                                                         SZ_4K - 1;
 226                         mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
 227                         davinci_mmcsd1_device.name = "da830-mmc";
 228                 } else
 229                         break;
 230
 231                 pdev = &davinci_mmcsd1_device;
 232                 break;
 233         case 0:
 234                 if (cpu_is_davinci_dm355()) {
 235                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 236                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 237                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 238
 239                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 240                         davinci_cfg_reg(DM355_MMCSD0);
 241
 242                         /* enable RX EDMA */
 243                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 244                 } else if (cpu_is_davinci_dm365()) {
 245                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 246                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 247                                                         SZ_4K - 1;
 248                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
 249                         davinci_mmcsd0_device.name = "da830-mmc";
 250                 } else if (cpu_is_davinci_dm644x()) {
 251                         /* REVISIT: should this be in board-init code? */
 252                         /* Power-on 3.3V IO cells */
 253                         __raw_writel(0,
 254                                 DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
 255                         /*Set up the pull regiter for MMC */
 256                         davinci_cfg_reg(DM644X_MSTK);
 257                 }
 258
 259                 pdev = &davinci_mmcsd0_device;
 260                 break;
 261         }
 262
 263         if (WARN_ON(!pdev))
 264                 return;
 265
 266         pdev->dev.platform_data = config;
 267         platform_device_register(pdev);
 268 }
 269
 270 #else
 271
 272 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 273 {
 274 }
 275
 276 #endif
 277
 278 /*-------------------------------------------------------------------------*/
 279
 280 static struct resource wdt_resources[] = {
 281         {
 282                 .start  = DAVINCI_WDOG_BASE,
 283                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 284                 .flags  = IORESOURCE_MEM,
 285         },
 286 };
 287
 288 struct platform_device davinci_wdt_device = {
 289         .name           = "davinci-wdt",
 290         .id             = -1,
 291         .num_resources  = ARRAY_SIZE(wdt_resources),
 292         .resource       = wdt_resources,
 293 };
 294
 295 void davinci_restart(enum reboot_mode mode, const char *cmd)
 296 {
 297         davinci_watchdog_reset(&davinci_wdt_device);
 298 }
 299
 300 int davinci_init_wdt(void)
 301 {
 302         return platform_device_register(&davinci_wdt_device);
 303 }
 304
 305 static struct platform_device davinci_gpio_device = {
 306         .name   = "davinci_gpio",
 307         .id     = -1,
 308 };
 309
 310 int davinci_gpio_register(struct resource *res, int size, void *pdata)
 311 {
 312         davinci_gpio_device.resource = res;
 313         davinci_gpio_device.num_resources = size;
 314         davinci_gpio_device.dev.platform_data = pdata;
 315         return platform_device_register(&davinci_gpio_device);
 316 }
 317
 318 /*-------------------------------------------------------------------------*/
 319
 320 /*-------------------------------------------------------------------------*/
 321
 322 struct davinci_timer_instance davinci_timer_instance[2] = {
 323         {
 324                 .base           = DAVINCI_TIMER0_BASE,
 325                 .bottom_irq     = IRQ_TINT0_TINT12,
 326                 .top_irq        = IRQ_TINT0_TINT34,
 327         },
 328         {
 329                 .base           = DAVINCI_TIMER1_BASE,
 330                 .bottom_irq     = IRQ_TINT1_TINT12,
 331                 .top_irq        = IRQ_TINT1_TINT34,
 332         },
 333 };
 334