arch/arm/mach-davinci/devices-tnetv107x.c

   1 /*
   2  * Texas Instruments TNETV107X SoC devices
   3  *
   4  * Copyright (C) 2010 Texas Instruments
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation version 2.
   9  *
  10  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11  * kind, whether express or implied; without even the implied warranty
  12  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/dma-mapping.h>
  19 #include <linux/clk.h>
  20 #include <linux/slab.h>
  21
  22 #include <mach/common.h>
  23 #include <mach/irqs.h>
  24 #include <mach/edma.h>
  25 #include <mach/tnetv107x.h>
  26
  27 #include "clock.h"
  28
  29 /* Base addresses for on-chip devices */
  30 #define TNETV107X_TPCC_BASE                     0x01c00000
  31 #define TNETV107X_TPTC0_BASE                    0x01c10000
  32 #define TNETV107X_TPTC1_BASE                    0x01c10400
  33 #define TNETV107X_WDOG_BASE                     0x08086700
  34 #define TNETV107X_TSC_BASE                      0x08088500
  35 #define TNETV107X_SDIO0_BASE                    0x08088700
  36 #define TNETV107X_SDIO1_BASE                    0x08088800
  37 #define TNETV107X_KEYPAD_BASE                   0x08088a00
  38 #define TNETV107X_SSP_BASE                      0x08088c00
  39 #define TNETV107X_ASYNC_EMIF_CNTRL_BASE         0x08200000
  40 #define TNETV107X_ASYNC_EMIF_DATA_CE0_BASE      0x30000000
  41 #define TNETV107X_ASYNC_EMIF_DATA_CE1_BASE      0x40000000
  42 #define TNETV107X_ASYNC_EMIF_DATA_CE2_BASE      0x44000000
  43 #define TNETV107X_ASYNC_EMIF_DATA_CE3_BASE      0x48000000
  44
  45 /* TNETV107X specific EDMA3 information */
  46 #define EDMA_TNETV107X_NUM_DMACH        64
  47 #define EDMA_TNETV107X_NUM_TCC          64
  48 #define EDMA_TNETV107X_NUM_PARAMENTRY   128
  49 #define EDMA_TNETV107X_NUM_EVQUE        2
  50 #define EDMA_TNETV107X_NUM_TC           2
  51 #define EDMA_TNETV107X_CHMAP_EXIST      0
  52 #define EDMA_TNETV107X_NUM_REGIONS      4
  53 #define TNETV107X_DMACH2EVENT_MAP0      0x3C0CE000u
  54 #define TNETV107X_DMACH2EVENT_MAP1      0x000FFFFFu
  55
  56 #define TNETV107X_DMACH_SDIO0_RX                26
  57 #define TNETV107X_DMACH_SDIO0_TX                27
  58 #define TNETV107X_DMACH_SDIO1_RX                28
  59 #define TNETV107X_DMACH_SDIO1_TX                29
  60
  61 static const s8 edma_tc_mapping[][2] = {
  62         /* event queue no       TC no   */
  63         {        0,              0      },
  64         {        1,              1      },
  65         {       -1,             -1      }
  66 };
  67
  68 static const s8 edma_priority_mapping[][2] = {
  69         /* event queue no       Prio    */
  70         {        0,              3      },
  71         {        1,              7      },
  72         {       -1,             -1      }
  73 };
  74
  75 static struct edma_soc_info edma_cc0_info = {
  76         .n_channel              = EDMA_TNETV107X_NUM_DMACH,
  77         .n_region               = EDMA_TNETV107X_NUM_REGIONS,
  78         .n_slot                 = EDMA_TNETV107X_NUM_PARAMENTRY,
  79         .n_tc                   = EDMA_TNETV107X_NUM_TC,
  80         .n_cc                   = 1,
  81         .queue_tc_mapping       = edma_tc_mapping,
  82         .queue_priority_mapping = edma_priority_mapping,
  83         .default_queue          = EVENTQ_1,
  84 };
  85
  86 static struct edma_soc_info *tnetv107x_edma_info[EDMA_MAX_CC] = {
  87         &edma_cc0_info,
  88 };
  89
  90 static struct resource edma_resources[] = {
  91         {
  92                 .name   = "edma_cc0",
  93                 .start  = TNETV107X_TPCC_BASE,
  94                 .end    = TNETV107X_TPCC_BASE + SZ_32K - 1,
  95                 .flags  = IORESOURCE_MEM,
  96         },
  97         {
  98                 .name   = "edma_tc0",
  99                 .start  = TNETV107X_TPTC0_BASE,
 100                 .end    = TNETV107X_TPTC0_BASE + SZ_1K - 1,
 101                 .flags  = IORESOURCE_MEM,
 102         },
 103         {
 104                 .name   = "edma_tc1",
 105                 .start  = TNETV107X_TPTC1_BASE,
 106                 .end    = TNETV107X_TPTC1_BASE + SZ_1K - 1,
 107                 .flags  = IORESOURCE_MEM,
 108         },
 109         {
 110                 .name   = "edma0",
 111                 .start  = IRQ_TNETV107X_TPCC,
 112                 .flags  = IORESOURCE_IRQ,
 113         },
 114         {
 115                 .name   = "edma0_err",
 116                 .start  = IRQ_TNETV107X_TPCC_ERR,
 117                 .flags  = IORESOURCE_IRQ,
 118         },
 119 };
 120
 121 static struct platform_device edma_device = {
 122         .name           = "edma",
 123         .id             = -1,
 124         .num_resources  = ARRAY_SIZE(edma_resources),
 125         .resource       = edma_resources,
 126         .dev.platform_data = tnetv107x_edma_info,
 127 };
 128
 129 static struct plat_serial8250_port serial_data[] = {
 130         {
 131                 .mapbase        = TNETV107X_UART0_BASE,
 132                 .irq            = IRQ_TNETV107X_UART0,
 133                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
 134                                         UPF_FIXED_TYPE | UPF_IOREMAP,
 135                 .type           = PORT_AR7,
 136                 .iotype         = UPIO_MEM32,
 137                 .regshift       = 2,
 138         },
 139         {
 140                 .mapbase        = TNETV107X_UART1_BASE,
 141                 .irq            = IRQ_TNETV107X_UART1,
 142                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
 143                                         UPF_FIXED_TYPE | UPF_IOREMAP,
 144                 .type           = PORT_AR7,
 145                 .iotype         = UPIO_MEM32,
 146                 .regshift       = 2,
 147         },
 148         {
 149                 .mapbase        = TNETV107X_UART2_BASE,
 150                 .irq            = IRQ_TNETV107X_UART2,
 151                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
 152                                         UPF_FIXED_TYPE | UPF_IOREMAP,
 153                 .type           = PORT_AR7,
 154                 .iotype         = UPIO_MEM32,
 155                 .regshift       = 2,
 156         },
 157         {
 158                 .flags  = 0,
 159         },
 160 };
 161
 162 struct platform_device tnetv107x_serial_device = {
 163         .name                   = "serial8250",
 164         .id                     = PLAT8250_DEV_PLATFORM,
 165         .dev.platform_data      = serial_data,
 166 };
 167
 168 static struct resource mmc0_resources[] = {
 169         { /* Memory mapped registers */
 170                 .start  = TNETV107X_SDIO0_BASE,
 171                 .end    = TNETV107X_SDIO0_BASE + 0x0ff,
 172                 .flags  = IORESOURCE_MEM
 173         },
 174         { /* MMC interrupt */
 175                 .start  = IRQ_TNETV107X_MMC0,
 176                 .flags  = IORESOURCE_IRQ
 177         },
 178         { /* SDIO interrupt */
 179                 .start  = IRQ_TNETV107X_SDIO0,
 180                 .flags  = IORESOURCE_IRQ
 181         },
 182         { /* DMA RX */
 183                 .start  = EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO0_RX),
 184                 .flags  = IORESOURCE_DMA
 185         },
 186         { /* DMA TX */
 187                 .start  = EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO0_TX),
 188                 .flags  = IORESOURCE_DMA
 189         },
 190 };
 191
 192 static struct resource mmc1_resources[] = {
 193         { /* Memory mapped registers */
 194                 .start  = TNETV107X_SDIO1_BASE,
 195                 .end    = TNETV107X_SDIO1_BASE + 0x0ff,
 196                 .flags  = IORESOURCE_MEM
 197         },
 198         { /* MMC interrupt */
 199                 .start  = IRQ_TNETV107X_MMC1,
 200                 .flags  = IORESOURCE_IRQ
 201         },
 202         { /* SDIO interrupt */
 203                 .start  = IRQ_TNETV107X_SDIO1,
 204                 .flags  = IORESOURCE_IRQ
 205         },
 206         { /* DMA RX */
 207                 .start  = EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO1_RX),
 208                 .flags  = IORESOURCE_DMA
 209         },
 210         { /* DMA TX */
 211                 .start  = EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO1_TX),
 212                 .flags  = IORESOURCE_DMA
 213         },
 214 };
 215
 216 static u64 mmc0_dma_mask = DMA_BIT_MASK(32);
 217 static u64 mmc1_dma_mask = DMA_BIT_MASK(32);
 218
 219 static struct platform_device mmc_devices[2] = {
 220         {
 221                 .name           = "davinci_mmc",
 222                 .id             = 0,
 223                 .dev            = {
 224                         .dma_mask               = &mmc0_dma_mask,
 225                         .coherent_dma_mask      = DMA_BIT_MASK(32),
 226                 },
 227                 .num_resources  = ARRAY_SIZE(mmc0_resources),
 228                 .resource       = mmc0_resources
 229         },
 230         {
 231                 .name           = "davinci_mmc",
 232                 .id             = 1,
 233                 .dev            = {
 234                         .dma_mask               = &mmc1_dma_mask,
 235                         .coherent_dma_mask      = DMA_BIT_MASK(32),
 236                 },
 237                 .num_resources  = ARRAY_SIZE(mmc1_resources),
 238                 .resource       = mmc1_resources
 239         },
 240 };
 241
 242 static const u32 emif_windows[] = {
 243         TNETV107X_ASYNC_EMIF_DATA_CE0_BASE, TNETV107X_ASYNC_EMIF_DATA_CE1_BASE,
 244         TNETV107X_ASYNC_EMIF_DATA_CE2_BASE, TNETV107X_ASYNC_EMIF_DATA_CE3_BASE,
 245 };
 246
 247 static const u32 emif_window_sizes[] = { SZ_256M, SZ_64M, SZ_64M, SZ_64M };
 248
 249 static struct resource wdt_resources[] = {
 250         {
 251                 .start  = TNETV107X_WDOG_BASE,
 252                 .end    = TNETV107X_WDOG_BASE + SZ_4K - 1,
 253                 .flags  = IORESOURCE_MEM,
 254         },
 255 };
 256
 257 struct platform_device tnetv107x_wdt_device = {
 258         .name           = "tnetv107x_wdt",
 259         .id             = 0,
 260         .num_resources  = ARRAY_SIZE(wdt_resources),
 261         .resource       = wdt_resources,
 262 };
 263
 264 static int __init nand_init(int chipsel, struct davinci_nand_pdata *data)
 265 {
 266         struct resource res[2];
 267         struct platform_device *pdev;
 268         u32     range;
 269         int     ret;
 270
 271         /* Figure out the resource range from the ale/cle masks */
 272         range = max(data->mask_cle, data->mask_ale);
 273         range = PAGE_ALIGN(range + 4) - 1;
 274
 275         if (range >= emif_window_sizes[chipsel])
 276                 return -EINVAL;
 277
 278         pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
 279         if (!pdev)
 280                 return -ENOMEM;
 281
 282         pdev->name              = "davinci_nand";
 283         pdev->id                = chipsel;
 284         pdev->dev.platform_data = data;
 285
 286         memset(res, 0, sizeof(res));
 287
 288         res[0].start    = emif_windows[chipsel];
 289         res[0].end      = res[0].start + range;
 290         res[0].flags    = IORESOURCE_MEM;
 291
 292         res[1].start    = TNETV107X_ASYNC_EMIF_CNTRL_BASE;
 293         res[1].end      = res[1].start + SZ_4K - 1;
 294         res[1].flags    = IORESOURCE_MEM;
 295
 296         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 297         if (ret < 0) {
 298                 kfree(pdev);
 299                 return ret;
 300         }
 301
 302         return platform_device_register(pdev);
 303 }
 304
 305 static struct resource keypad_resources[] = {
 306         {
 307                 .start  = TNETV107X_KEYPAD_BASE,
 308                 .end    = TNETV107X_KEYPAD_BASE + 0xff,
 309                 .flags  = IORESOURCE_MEM,
 310         },
 311         {
 312                 .start  = IRQ_TNETV107X_KEYPAD,
 313                 .flags  = IORESOURCE_IRQ,
 314                 .name   = "press",
 315         },
 316         {
 317                 .start  = IRQ_TNETV107X_KEYPAD_FREE,
 318                 .flags  = IORESOURCE_IRQ,
 319                 .name   = "release",
 320         },
 321 };
 322
 323 static struct platform_device keypad_device = {
 324         .name           = "tnetv107x-keypad",
 325         .num_resources  = ARRAY_SIZE(keypad_resources),
 326         .resource       = keypad_resources,
 327 };
 328
 329 static struct resource tsc_resources[] = {
 330         {
 331                 .start  = TNETV107X_TSC_BASE,
 332                 .end    = TNETV107X_TSC_BASE + 0xff,
 333                 .flags  = IORESOURCE_MEM,
 334         },
 335         {
 336                 .start  = IRQ_TNETV107X_TSC,
 337                 .flags  = IORESOURCE_IRQ,
 338         },
 339 };
 340
 341 static struct platform_device tsc_device = {
 342         .name           = "tnetv107x-ts",
 343         .num_resources  = ARRAY_SIZE(tsc_resources),
 344         .resource       = tsc_resources,
 345 };
 346
 347 static struct resource ssp_resources[] = {
 348         {
 349                 .start  = TNETV107X_SSP_BASE,
 350                 .end    = TNETV107X_SSP_BASE + 0x1ff,
 351                 .flags  = IORESOURCE_MEM,
 352         },
 353         {
 354                 .start  = IRQ_TNETV107X_SSP,
 355                 .flags  = IORESOURCE_IRQ,
 356         },
 357 };
 358
 359 static struct platform_device ssp_device = {
 360         .name           = "ti-ssp",
 361         .id             = -1,
 362         .num_resources  = ARRAY_SIZE(ssp_resources),
 363         .resource       = ssp_resources,
 364 };
 365
 366 void __init tnetv107x_devices_init(struct tnetv107x_device_info *info)
 367 {
 368         int i, error;
 369         struct clk *tsc_clk;
 370
 371         /*
 372          * The reset defaults for tnetv107x tsc clock divider is set too high.
 373          * This forces the clock down to a range that allows the ADC to
 374          * complete sample conversion in time.
 375          */
 376         tsc_clk = clk_get(NULL, "sys_tsc_clk");
 377         if (tsc_clk) {
 378                 error = clk_set_rate(tsc_clk, 5000000);
 379                 WARN_ON(error < 0);
 380                 clk_put(tsc_clk);
 381         }
 382
 383         platform_device_register(&edma_device);
 384         platform_device_register(&tnetv107x_wdt_device);
 385         platform_device_register(&tsc_device);
 386
 387         if (info->serial_config)
 388                 davinci_serial_init(info->serial_config);
 389
 390         for (i = 0; i < 2; i++)
 391                 if (info->mmc_config[i]) {
 392                         mmc_devices[i].dev.platform_data = info->mmc_config[i];
 393                         platform_device_register(&mmc_devices[i]);
 394                 }
 395
 396         for (i = 0; i < 4; i++)
 397                 if (info->nand_config[i])
 398                         nand_init(i, info->nand_config[i]);
 399
 400         if (info->keypad_config) {
 401                 keypad_device.dev.platform_data = info->keypad_config;
 402                 platform_device_register(&keypad_device);
 403         }
 404
 405         if (info->ssp_config) {
 406                 ssp_device.dev.platform_data = info->ssp_config;
 407                 platform_device_register(&ssp_device);
 408         }
 409 }