root/arch/arm/mach-davinci/devices.c

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DEFINITIONS

This source file includes following definitions.
  1. davinci_map_sysmod
  2. davinci_init_i2c
  3. davinci_init_ide
  4. davinci_setup_mmc
  5. davinci_setup_mmc
  6. davinci_init_wdt
  7. davinci_gpio_register
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * mach-davinci/devices.c
   4  *
   5  * DaVinci platform device setup/initialization
   6  */
   7 
   8 #include <linux/init.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/platform_data/i2c-davinci.h>
  11 #include <linux/platform_data/mmc-davinci.h>
  12 #include <linux/platform_data/edma.h>
  13 #include <linux/dma-mapping.h>
  14 #include <linux/io.h>
  15 #include <linux/reboot.h>
  16 
  17 #include <mach/hardware.h>
  18 #include <mach/cputype.h>
  19 #include <mach/mux.h>
  20 #include <mach/time.h>
  21 
  22 #include "davinci.h"
  23 #include "irqs.h"
  24 
  25 #define DAVINCI_I2C_BASE             0x01C21000
  26 #define DAVINCI_ATA_BASE             0x01C66000
  27 #define DAVINCI_MMCSD0_BASE          0x01E10000
  28 #define DM355_MMCSD0_BASE            0x01E11000
  29 #define DM355_MMCSD1_BASE            0x01E00000
  30 #define DM365_MMCSD0_BASE            0x01D11000
  31 #define DM365_MMCSD1_BASE            0x01D00000
  32 
  33 void __iomem  *davinci_sysmod_base;
  34 
  35 void davinci_map_sysmod(void)
  36 {
  37         davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
  38                                               0x800);
  39         /*
  40          * Throw a bug since a lot of board initialization code depends
  41          * on system module availability. ioremap() failing this early
  42          * need careful looking into anyway.
  43          */
  44         BUG_ON(!davinci_sysmod_base);
  45 }
  46 
  47 static struct resource i2c_resources[] = {
  48         {
  49                 .start          = DAVINCI_I2C_BASE,
  50                 .end            = DAVINCI_I2C_BASE + 0x40,
  51                 .flags          = IORESOURCE_MEM,
  52         },
  53         {
  54                 .start          = DAVINCI_INTC_IRQ(IRQ_I2C),
  55                 .flags          = IORESOURCE_IRQ,
  56         },
  57 };
  58 
  59 static struct platform_device davinci_i2c_device = {
  60         .name           = "i2c_davinci",
  61         .id             = 1,
  62         .num_resources  = ARRAY_SIZE(i2c_resources),
  63         .resource       = i2c_resources,
  64 };
  65 
  66 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  67 {
  68         if (cpu_is_davinci_dm644x())
  69                 davinci_cfg_reg(DM644X_I2C);
  70 
  71         davinci_i2c_device.dev.platform_data = pdata;
  72         (void) platform_device_register(&davinci_i2c_device);
  73 }
  74 
  75 static struct resource ide_resources[] = {
  76         {
  77                 .start          = DAVINCI_ATA_BASE,
  78                 .end            = DAVINCI_ATA_BASE + 0x7ff,
  79                 .flags          = IORESOURCE_MEM,
  80         },
  81         {
  82                 .start          = DAVINCI_INTC_IRQ(IRQ_IDE),
  83                 .end            = DAVINCI_INTC_IRQ(IRQ_IDE),
  84                 .flags          = IORESOURCE_IRQ,
  85         },
  86 };
  87 
  88 static u64 ide_dma_mask = DMA_BIT_MASK(32);
  89 
  90 static struct platform_device ide_device = {
  91         .name           = "palm_bk3710",
  92         .id             = -1,
  93         .resource       = ide_resources,
  94         .num_resources  = ARRAY_SIZE(ide_resources),
  95         .dev = {
  96                 .dma_mask               = &ide_dma_mask,
  97                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  98         },
  99 };
 100 
 101 void __init davinci_init_ide(void)
 102 {
 103         if (cpu_is_davinci_dm644x()) {
 104                 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
 105                 davinci_cfg_reg(DM644X_ATAEN);
 106                 davinci_cfg_reg(DM644X_HDIREN);
 107         } else if (cpu_is_davinci_dm646x()) {
 108                 /* IRQ_DM646X_IDE is the same as IRQ_IDE */
 109                 davinci_cfg_reg(DM646X_ATAEN);
 110         } else {
 111                 WARN_ON(1);
 112                 return;
 113         }
 114 
 115         platform_device_register(&ide_device);
 116 }
 117 
 118 #if IS_ENABLED(CONFIG_MMC_DAVINCI)
 119 
 120 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
 121 
 122 static struct resource mmcsd0_resources[] = {
 123         {
 124                 /* different on dm355 */
 125                 .start = DAVINCI_MMCSD0_BASE,
 126                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
 127                 .flags = IORESOURCE_MEM,
 128         },
 129         /* IRQs:  MMC/SD, then SDIO */
 130         {
 131                 .start = DAVINCI_INTC_IRQ(IRQ_MMCINT),
 132                 .flags = IORESOURCE_IRQ,
 133         }, {
 134                 /* different on dm355 */
 135                 .start = DAVINCI_INTC_IRQ(IRQ_SDIOINT),
 136                 .flags = IORESOURCE_IRQ,
 137         },
 138 };
 139 
 140 static struct platform_device davinci_mmcsd0_device = {
 141         .name = "dm6441-mmc",
 142         .id = 0,
 143         .dev = {
 144                 .dma_mask = &mmcsd0_dma_mask,
 145                 .coherent_dma_mask = DMA_BIT_MASK(32),
 146         },
 147         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 148         .resource = mmcsd0_resources,
 149 };
 150 
 151 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 152 
 153 static struct resource mmcsd1_resources[] = {
 154         {
 155                 .start = DM355_MMCSD1_BASE,
 156                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 157                 .flags = IORESOURCE_MEM,
 158         },
 159         /* IRQs:  MMC/SD, then SDIO */
 160         {
 161                 .start = DAVINCI_INTC_IRQ(IRQ_DM355_MMCINT1),
 162                 .flags = IORESOURCE_IRQ,
 163         }, {
 164                 .start = DAVINCI_INTC_IRQ(IRQ_DM355_SDIOINT1),
 165                 .flags = IORESOURCE_IRQ,
 166         },
 167 };
 168 
 169 static struct platform_device davinci_mmcsd1_device = {
 170         .name = "dm6441-mmc",
 171         .id = 1,
 172         .dev = {
 173                 .dma_mask = &mmcsd1_dma_mask,
 174                 .coherent_dma_mask = DMA_BIT_MASK(32),
 175         },
 176         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 177         .resource = mmcsd1_resources,
 178 };
 179 
 180 
 181 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 182 {
 183         struct platform_device  *pdev = NULL;
 184 
 185         if (WARN_ON(cpu_is_davinci_dm646x()))
 186                 return;
 187 
 188         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 189          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 190          *
 191          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 192          * not handled right here ...
 193          */
 194         switch (module) {
 195         case 1:
 196                 if (cpu_is_davinci_dm355()) {
 197                         /* REVISIT we may not need all these pins if e.g. this
 198                          * is a hard-wired SDIO device...
 199                          */
 200                         davinci_cfg_reg(DM355_SD1_CMD);
 201                         davinci_cfg_reg(DM355_SD1_CLK);
 202                         davinci_cfg_reg(DM355_SD1_DATA0);
 203                         davinci_cfg_reg(DM355_SD1_DATA1);
 204                         davinci_cfg_reg(DM355_SD1_DATA2);
 205                         davinci_cfg_reg(DM355_SD1_DATA3);
 206                 } else if (cpu_is_davinci_dm365()) {
 207                         /* Configure pull down control */
 208                         unsigned v;
 209 
 210                         v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 211                         __raw_writel(v & ~0xfc0,
 212                                         DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
 213 
 214                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 215                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 216                                                         SZ_4K - 1;
 217                         mmcsd1_resources[2].start = DAVINCI_INTC_IRQ(
 218                                                         IRQ_DM365_SDIOINT1);
 219                         davinci_mmcsd1_device.name = "da830-mmc";
 220                 } else
 221                         break;
 222 
 223                 pdev = &davinci_mmcsd1_device;
 224                 break;
 225         case 0:
 226                 if (cpu_is_davinci_dm355()) {
 227                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 228                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 229                         mmcsd0_resources[2].start = DAVINCI_INTC_IRQ(
 230                                                         IRQ_DM355_SDIOINT0);
 231 
 232                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 233                         davinci_cfg_reg(DM355_MMCSD0);
 234 
 235                         /* enable RX EDMA */
 236                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 237                 } else if (cpu_is_davinci_dm365()) {
 238                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 239                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 240                                                         SZ_4K - 1;
 241                         mmcsd0_resources[2].start = DAVINCI_INTC_IRQ(
 242                                                         IRQ_DM365_SDIOINT0);
 243                         davinci_mmcsd0_device.name = "da830-mmc";
 244                 } else if (cpu_is_davinci_dm644x()) {
 245                         /* REVISIT: should this be in board-init code? */
 246                         /* Power-on 3.3V IO cells */
 247                         __raw_writel(0,
 248                                 DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
 249                         /*Set up the pull regiter for MMC */
 250                         davinci_cfg_reg(DM644X_MSTK);
 251                 }
 252 
 253                 pdev = &davinci_mmcsd0_device;
 254                 break;
 255         }
 256 
 257         if (WARN_ON(!pdev))
 258                 return;
 259 
 260         pdev->dev.platform_data = config;
 261         platform_device_register(pdev);
 262 }
 263 
 264 #else
 265 
 266 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 267 {
 268 }
 269 
 270 #endif
 271 
 272 /*-------------------------------------------------------------------------*/
 273 
 274 static struct resource wdt_resources[] = {
 275         {
 276                 .start  = DAVINCI_WDOG_BASE,
 277                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 278                 .flags  = IORESOURCE_MEM,
 279         },
 280 };
 281 
 282 static struct platform_device davinci_wdt_device = {
 283         .name           = "davinci-wdt",
 284         .id             = -1,
 285         .num_resources  = ARRAY_SIZE(wdt_resources),
 286         .resource       = wdt_resources,
 287 };
 288 
 289 int davinci_init_wdt(void)
 290 {
 291         return platform_device_register(&davinci_wdt_device);
 292 }
 293 
 294 static struct platform_device davinci_gpio_device = {
 295         .name   = "davinci_gpio",
 296         .id     = -1,
 297 };
 298 
 299 int davinci_gpio_register(struct resource *res, int size, void *pdata)
 300 {
 301         davinci_gpio_device.resource = res;
 302         davinci_gpio_device.num_resources = size;
 303         davinci_gpio_device.dev.platform_data = pdata;
 304         return platform_device_register(&davinci_gpio_device);
 305 }
 306 
 307 /*-------------------------------------------------------------------------*/
 308 
 309 /*-------------------------------------------------------------------------*/
 310 
 311 struct davinci_timer_instance davinci_timer_instance[2] = {
 312         {
 313                 .base           = DAVINCI_TIMER0_BASE,
 314                 .bottom_irq     = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT12),
 315                 .top_irq        = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT34),
 316         },
 317         {
 318                 .base           = DAVINCI_TIMER1_BASE,
 319                 .bottom_irq     = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT12),
 320                 .top_irq        = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34),
 321         },
 322 };
 323
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