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
  36 static 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
  52 static 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
  59 static void omap_init_rtc(void)
  60 {
  61         (void) platform_device_register(&omap_rtc_device);
  62 }
  63 #else
  64 static inline void omap_init_rtc(void) {}
  65 #endif
  66
  67 static inline void omap_init_mbox(void) { }
  68
  69 /*-------------------------------------------------------------------------*/
  70
  71 #if IS_ENABLED(CONFIG_MMC_OMAP)
  72
  73 static 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  */
 132 static 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
 179 fail:
 180         platform_device_put(pdev);
 181         return ret;
 182 }
 183
 184 void __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
 231 struct platform_device omap_spi1 = {
 232         .name           = "omap1_spi100k",
 233         .id             = 1,
 234 };
 235
 236 struct platform_device omap_spi2 = {
 237         .name           = "omap1_spi100k",
 238         .id             = 2,
 239 };
 240
 241 static 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
 256 static 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
 265 static 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
 277 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 278
 279 static 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
 290 void __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
 305 static 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
 318 static struct resource uwire_resources[] = {
 319         {
 320                 .start          = OMAP_UWIRE_BASE,
 321                 .end            = OMAP_UWIRE_BASE + 0x20,
 322                 .flags          = IORESOURCE_MEM,
 323         },
 324 };
 325
 326 static 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
 333 static 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
 346 static inline void omap_init_uwire(void) {}
 347 #endif
 348
 349
 350 #define OMAP1_RNG_BASE          0xfffe5000
 351
 352 static struct resource omap1_rng_resources[] = {
 353         {
 354                 .start          = OMAP1_RNG_BASE,
 355                 .end            = OMAP1_RNG_BASE + 0x4f,
 356                 .flags          = IORESOURCE_MEM,
 357         },
 358 };
 359
 360 static 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
 367 static 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  */
 397 static 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 }
 418 arch_initcall(omap1_init_devices);
 419
 420 #if IS_ENABLED(CONFIG_OMAP_WATCHDOG)
 421
 422 static struct resource wdt_resources[] = {
 423         {
 424                 .start          = 0xfffeb000,
 425                 .end            = 0xfffeb07F,
 426                 .flags          = IORESOURCE_MEM,
 427         },
 428 };
 429
 430 static 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
 437 static 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 }
 457 subsys_initcall(omap_init_wdt);
 458 #endif