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