LXR linux/arch/arm/mach-omap1/devices.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * linux/arch/arm/mach-omap1/devices.c
   4 *
   5 * OMAP1 platform device setup/initialization
   6 */
   7
   8#include <linux/dma-mapping.h>
   9#include <linux/gpio.h>
  10#include <linux/module.h>
  11#include <linux/kernel.h>
  12#include <linux/init.h>
  13#include <linux/platform_device.h>
  14#include <linux/spi/spi.h>
  15
  16#include <linux/platform_data/omap-wd-timer.h>
  17
  18#include <asm/mach/map.h>
  19
  20#include <mach/tc.h>
  21#include <mach/mux.h>
  22
  23#include <mach/omap7xx.h>
  24#include "camera.h"
  25#include <mach/hardware.h>
  26
  27#include "common.h"
  28#include "clock.h"
  29#include "mmc.h"
  30#include "sram.h"
  31
  32#if IS_ENABLED(CONFIG_RTC_DRV_OMAP)
  33
  34#define OMAP_RTC_BASE           0xfffb4800
  35
  36static struct resource rtc_resources[] = {
  37        {
  38                .start          = OMAP_RTC_BASE,
  39                .end            = OMAP_RTC_BASE + 0x5f,
  40                .flags          = IORESOURCE_MEM,
  41        },
  42        {
  43                .start          = INT_RTC_TIMER,
  44                .flags          = IORESOURCE_IRQ,
  45        },
  46        {
  47                .start          = INT_RTC_ALARM,
  48                .flags          = IORESOURCE_IRQ,
  49        },
  50};
  51
  52static struct platform_device omap_rtc_device = {
  53        .name           = "omap_rtc",
  54        .id             = -1,
  55        .num_resources  = ARRAY_SIZE(rtc_resources),
  56        .resource       = rtc_resources,
  57};
  58
  59static void omap_init_rtc(void)
  60{
  61        (void) platform_device_register(&omap_rtc_device);
  62}
  63#else
  64static inline void omap_init_rtc(void) {}
  65#endif
  66
  67static inline void omap_init_mbox(void) { }
  68
  69/*-------------------------------------------------------------------------*/
  70
  71#if IS_ENABLED(CONFIG_MMC_OMAP)
  72
  73static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  74                        int controller_nr)
  75{
  76        if (controller_nr == 0) {
  77                if (cpu_is_omap7xx()) {
  78                        omap_cfg_reg(MMC_7XX_CMD);
  79                        omap_cfg_reg(MMC_7XX_CLK);
  80                        omap_cfg_reg(MMC_7XX_DAT0);
  81                } else {
  82                        omap_cfg_reg(MMC_CMD);
  83                        omap_cfg_reg(MMC_CLK);
  84                        omap_cfg_reg(MMC_DAT0);
  85                }
  86
  87                if (cpu_is_omap1710()) {
  88                        omap_cfg_reg(M15_1710_MMC_CLKI);
  89                        omap_cfg_reg(P19_1710_MMC_CMDDIR);
  90                        omap_cfg_reg(P20_1710_MMC_DATDIR0);
  91                }
  92                if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
  93                        omap_cfg_reg(MMC_DAT1);
  94                        /* NOTE: DAT2 can be on W10 (here) or M15 */
  95                        if (!mmc_controller->slots[0].nomux)
  96                                omap_cfg_reg(MMC_DAT2);
  97                        omap_cfg_reg(MMC_DAT3);
  98                }
  99        }
 100
 101        /* Block 2 is on newer chips, and has many pinout options */
 102        if (cpu_is_omap16xx() && controller_nr == 1) {
 103                if (!mmc_controller->slots[1].nomux) {
 104                        omap_cfg_reg(Y8_1610_MMC2_CMD);
 105                        omap_cfg_reg(Y10_1610_MMC2_CLK);
 106                        omap_cfg_reg(R18_1610_MMC2_CLKIN);
 107                        omap_cfg_reg(W8_1610_MMC2_DAT0);
 108                        if (mmc_controller->slots[1].wires == 4) {
 109                                omap_cfg_reg(V8_1610_MMC2_DAT1);
 110                                omap_cfg_reg(W15_1610_MMC2_DAT2);
 111                                omap_cfg_reg(R10_1610_MMC2_DAT3);
 112                        }
 113
 114                        /* These are needed for the level shifter */
 115                        omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 116                        omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 117                        omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 118                }
 119
 120                /* Feedback clock must be set on OMAP-1710 MMC2 */
 121                if (cpu_is_omap1710())
 122                        omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 123                                        MOD_CONF_CTRL_1);
 124        }
 125}
 126
 127#define OMAP_MMC_NR_RES         4
 128
 129/*
 130 * Register MMC devices.
 131 */
 132static int __init omap_mmc_add(const char *name, int id, unsigned long base,
 133                                unsigned long size, unsigned int irq,
 134                                unsigned rx_req, unsigned tx_req,
 135                                struct omap_mmc_platform_data *data)
 136{
 137        struct platform_device *pdev;
 138        struct resource res[OMAP_MMC_NR_RES];
 139        int ret;
 140
 141        pdev = platform_device_alloc(name, id);
 142        if (!pdev)
 143                return -ENOMEM;
 144
 145        memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 146        res[0].start = base;
 147        res[0].end = base + size - 1;
 148        res[0].flags = IORESOURCE_MEM;
 149        res[1].start = res[1].end = irq;
 150        res[1].flags = IORESOURCE_IRQ;
 151        res[2].start = rx_req;
 152        res[2].name = "rx";
 153        res[2].flags = IORESOURCE_DMA;
 154        res[3].start = tx_req;
 155        res[3].name = "tx";
 156        res[3].flags = IORESOURCE_DMA;
 157
 158        if (cpu_is_omap7xx())
 159                data->slots[0].features = MMC_OMAP7XX;
 160        if (cpu_is_omap15xx())
 161                data->slots[0].features = MMC_OMAP15XX;
 162        if (cpu_is_omap16xx())
 163                data->slots[0].features = MMC_OMAP16XX;
 164
 165        ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 166        if (ret == 0)
 167                ret = platform_device_add_data(pdev, data, sizeof(*data));
 168        if (ret)
 169                goto fail;
 170
 171        ret = platform_device_add(pdev);
 172        if (ret)
 173                goto fail;
 174
 175        /* return device handle to board setup code */
 176        data->dev = &pdev->dev;
 177        return 0;
 178
 179fail:
 180        platform_device_put(pdev);
 181        return ret;
 182}
 183
 184void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 185                        int nr_controllers)
 186{
 187        int i;
 188
 189        for (i = 0; i < nr_controllers; i++) {
 190                unsigned long base, size;
 191                unsigned rx_req, tx_req;
 192                unsigned int irq = 0;
 193
 194                if (!mmc_data[i])
 195                        continue;
 196
 197                omap1_mmc_mux(mmc_data[i], i);
 198
 199                switch (i) {
 200                case 0:
 201                        base = OMAP1_MMC1_BASE;
 202                        irq = INT_MMC;
 203                        rx_req = 22;
 204                        tx_req = 21;
 205                        break;
 206                case 1:
 207                        if (!cpu_is_omap16xx())
 208                                return;
 209                        base = OMAP1_MMC2_BASE;
 210                        irq = INT_1610_MMC2;
 211                        rx_req = 55;
 212                        tx_req = 54;
 213                        break;
 214                default:
 215                        continue;
 216                }
 217                size = OMAP1_MMC_SIZE;
 218
 219                omap_mmc_add("mmci-omap", i, base, size, irq,
 220                                rx_req, tx_req, mmc_data[i]);
 221        }
 222}
 223
 224#endif
 225
 226/*-------------------------------------------------------------------------*/
 227
 228/* OMAP7xx SPI support */
 229#if IS_ENABLED(CONFIG_SPI_OMAP_100K)
 230
 231struct platform_device omap_spi1 = {
 232        .name           = "omap1_spi100k",
 233        .id             = 1,
 234};
 235
 236struct platform_device omap_spi2 = {
 237        .name           = "omap1_spi100k",
 238        .id             = 2,
 239};
 240
 241static void omap_init_spi100k(void)
 242{
 243        if (!cpu_is_omap7xx())
 244                return;
 245
 246        omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 247        if (omap_spi1.dev.platform_data)
 248                platform_device_register(&omap_spi1);
 249
 250        omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 251        if (omap_spi2.dev.platform_data)
 252                platform_device_register(&omap_spi2);
 253}
 254
 255#else
 256static inline void omap_init_spi100k(void)
 257{
 258}
 259#endif
 260
 261
 262#define OMAP1_CAMERA_BASE       0xfffb6800
 263#define OMAP1_CAMERA_IOSIZE     0x1c
 264
 265static struct resource omap1_camera_resources[] = {
 266        [0] = {
 267                .start  = OMAP1_CAMERA_BASE,
 268                .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 269                .flags  = IORESOURCE_MEM,
 270        },
 271        [1] = {
 272                .start  = INT_CAMERA,
 273                .flags  = IORESOURCE_IRQ,
 274        },
 275};
 276
 277static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 278
 279static struct platform_device omap1_camera_device = {
 280        .name           = "omap1-camera",
 281        .id             = 0, /* This is used to put cameras on this interface */
 282        .dev            = {
 283                .dma_mask               = &omap1_camera_dma_mask,
 284                .coherent_dma_mask      = DMA_BIT_MASK(32),
 285        },
 286        .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 287        .resource       = omap1_camera_resources,
 288};
 289
 290void __init omap1_camera_init(void *info)
 291{
 292        struct platform_device *dev = &omap1_camera_device;
 293        int ret;
 294
 295        dev->dev.platform_data = info;
 296
 297        ret = platform_device_register(dev);
 298        if (ret)
 299                dev_err(&dev->dev, "unable to register device: %d\n", ret);
 300}
 301
 302
 303/*-------------------------------------------------------------------------*/
 304
 305static inline void omap_init_sti(void) {}
 306
 307/* Numbering for the SPI-capable controllers when used for SPI:
 308 * spi          = 1
 309 * uwire        = 2
 310 * mmc1..2      = 3..4
 311 * mcbsp1..3    = 5..7
 312 */
 313
 314#if IS_ENABLED(CONFIG_SPI_OMAP_UWIRE)
 315
 316#define OMAP_UWIRE_BASE         0xfffb3000
 317
 318static struct resource uwire_resources[] = {
 319        {
 320                .start          = OMAP_UWIRE_BASE,
 321                .end            = OMAP_UWIRE_BASE + 0x20,
 322                .flags          = IORESOURCE_MEM,
 323        },
 324};
 325
 326static struct platform_device omap_uwire_device = {
 327        .name      = "omap_uwire",
 328        .id          = -1,
 329        .num_resources  = ARRAY_SIZE(uwire_resources),
 330        .resource       = uwire_resources,
 331};
 332
 333static void omap_init_uwire(void)
 334{
 335        /* FIXME define and use a boot tag; not all boards will be hooking
 336         * up devices to the microwire controller, and multi-board configs
 337         * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 338         */
 339
 340        /* board-specific code must configure chipselects (only a few
 341         * are normally used) and SCLK/SDI/SDO (each has two choices).
 342         */
 343        (void) platform_device_register(&omap_uwire_device);
 344}
 345#else
 346static inline void omap_init_uwire(void) {}
 347#endif
 348
 349
 350#define OMAP1_RNG_BASE          0xfffe5000
 351
 352static struct resource omap1_rng_resources[] = {
 353        {
 354                .start          = OMAP1_RNG_BASE,
 355                .end            = OMAP1_RNG_BASE + 0x4f,
 356                .flags          = IORESOURCE_MEM,
 357        },
 358};
 359
 360static struct platform_device omap1_rng_device = {
 361        .name           = "omap_rng",
 362        .id             = -1,
 363        .num_resources  = ARRAY_SIZE(omap1_rng_resources),
 364        .resource       = omap1_rng_resources,
 365};
 366
 367static void omap1_init_rng(void)
 368{
 369        if (!cpu_is_omap16xx())
 370                return;
 371
 372        (void) platform_device_register(&omap1_rng_device);
 373}
 374
 375/*-------------------------------------------------------------------------*/
 376
 377/*
 378 * This gets called after board-specific INIT_MACHINE, and initializes most
 379 * on-chip peripherals accessible on this board (except for few like USB):
 380 *
 381 *  (a) Does any "standard config" pin muxing needed.  Board-specific
 382 *      code will have muxed GPIO pins and done "nonstandard" setup;
 383 *      that code could live in the boot loader.
 384 *  (b) Populating board-specific platform_data with the data drivers
 385 *      rely on to handle wiring variations.
 386 *  (c) Creating platform devices as meaningful on this board and
 387 *      with this kernel configuration.
 388 *
 389 * Claiming GPIOs, and setting their direction and initial values, is the
 390 * responsibility of the device drivers.  So is responding to probe().
 391 *
 392 * Board-specific knowledge like creating devices or pin setup is to be
 393 * kept out of drivers as much as possible.  In particular, pin setup
 394 * may be handled by the boot loader, and drivers should expect it will
 395 * normally have been done by the time they're probed.
 396 */
 397static int __init omap1_init_devices(void)
 398{
 399        if (!cpu_class_is_omap1())
 400                return -ENODEV;
 401
 402        omap_sram_init();
 403        omap1_clk_late_init();
 404
 405        /* please keep these calls, and their implementations above,
 406         * in alphabetical order so they're easier to sort through.
 407         */
 408
 409        omap_init_mbox();
 410        omap_init_rtc();
 411        omap_init_spi100k();
 412        omap_init_sti();
 413        omap_init_uwire();
 414        omap1_init_rng();
 415
 416        return 0;
 417}
 418arch_initcall(omap1_init_devices);
 419
 420#if IS_ENABLED(CONFIG_OMAP_WATCHDOG)
 421
 422static struct resource wdt_resources[] = {
 423        {
 424                .start          = 0xfffeb000,
 425                .end            = 0xfffeb07F,
 426                .flags          = IORESOURCE_MEM,
 427        },
 428};
 429
 430static struct platform_device omap_wdt_device = {
 431        .name           = "omap_wdt",
 432        .id             = -1,
 433        .num_resources  = ARRAY_SIZE(wdt_resources),
 434        .resource       = wdt_resources,
 435};
 436
 437static int __init omap_init_wdt(void)
 438{
 439        struct omap_wd_timer_platform_data pdata;
 440        int ret;
 441
 442        if (!cpu_is_omap16xx())
 443                return -ENODEV;
 444
 445        pdata.read_reset_sources = omap1_get_reset_sources;
 446
 447        ret = platform_device_register(&omap_wdt_device);
 448        if (!ret) {
 449                ret = platform_device_add_data(&omap_wdt_device, &pdata,
 450                                               sizeof(pdata));
 451                if (ret)
 452                        platform_device_del(&omap_wdt_device);
 453        }
 454
 455        return ret;
 456}
 457subsys_initcall(omap_init_wdt);
 458#endif
 459