arch/arm/mach-shmobile/board-bonito.c

   1 /*
   2  * bonito board support
   3  *
   4  * Copyright (C) 2011 Renesas Solutions Corp.
   5  * Copyright (C) 2011 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/i2c.h>
  24 #include <linux/init.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/irq.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/gpio.h>
  29 #include <linux/regulator/fixed.h>
  30 #include <linux/regulator/machine.h>
  31 #include <linux/smsc911x.h>
  32 #include <linux/videodev2.h>
  33 #include <mach/common.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/time.h>
  38 #include <asm/hardware/cache-l2x0.h>
  39 #include <mach/r8a7740.h>
  40 #include <mach/irqs.h>
  41 #include <video/sh_mobile_lcdc.h>
  42
  43 /*
  44  * CS   Address         device                  note
  45  *----------------------------------------------------------------
  46  * 0    0x0000_0000     NOR Flash (64MB)        SW12 : bit3 = OFF
  47  * 2    0x0800_0000     ExtNOR (64MB)           SW12 : bit3 = OFF
  48  * 4                    -
  49  * 5A                   -
  50  * 5B   0x1600_0000     SRAM (8MB)
  51  * 6    0x1800_0000     FPGA (64K)
  52  *      0x1801_0000     Ether (4KB)
  53  *      0x1801_1000     USB (4KB)
  54  */
  55
  56 /*
  57  * SW12
  58  *
  59  *      bit1                    bit2                    bit3
  60  *----------------------------------------------------------------------------
  61  * ON   NOR WriteProtect        NAND WriteProtect       CS0 ExtNOR / CS2 NOR
  62  * OFF  NOR Not WriteProtect    NAND Not WriteProtect   CS0 NOR    / CS2 ExtNOR
  63  */
  64
  65 /*
  66  * SCIFA5 (CN42)
  67  *
  68  * S38.3 = ON
  69  * S39.6 = ON
  70  * S43.1 = ON
  71  */
  72
  73 /*
  74  * LCDC0 (CN3/CN4/CN7)
  75  *
  76  * S38.1 = OFF
  77  * S38.2 = OFF
  78  */
  79
  80 /* Dummy supplies, where voltage doesn't matter */
  81 static struct regulator_consumer_supply dummy_supplies[] = {
  82         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  83         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  84 };
  85
  86 /*
  87  * FPGA
  88  */
  89 #define IRQSR0          0x0020
  90 #define IRQSR1          0x0022
  91 #define IRQMR0          0x0030
  92 #define IRQMR1          0x0032
  93 #define BUSSWMR1        0x0070
  94 #define BUSSWMR2        0x0072
  95 #define BUSSWMR3        0x0074
  96 #define BUSSWMR4        0x0076
  97
  98 #define LCDCR           0x10B4
  99 #define DEVRSTCR1       0x10D0
 100 #define DEVRSTCR2       0x10D2
 101 #define A1MDSR          0x10E0
 102 #define BVERR           0x1100
 103
 104 /* FPGA IRQ */
 105 #define FPGA_IRQ_BASE           (512)
 106 #define FPGA_IRQ0               (FPGA_IRQ_BASE)
 107 #define FPGA_IRQ1               (FPGA_IRQ_BASE + 16)
 108 #define FPGA_ETH_IRQ            (FPGA_IRQ0 + 15)
 109 static u16 bonito_fpga_read(u32 offset)
 110 {
 111         return __raw_readw(IOMEM(0xf0003000) + offset);
 112 }
 113
 114 static void bonito_fpga_write(u32 offset, u16 val)
 115 {
 116         __raw_writew(val, IOMEM(0xf0003000) + offset);
 117 }
 118
 119 static void bonito_fpga_irq_disable(struct irq_data *data)
 120 {
 121         unsigned int irq = data->irq;
 122         u32 addr = (irq < 1016) ? IRQMR0 : IRQMR1;
 123         int shift = irq % 16;
 124
 125         bonito_fpga_write(addr, bonito_fpga_read(addr) | (1 << shift));
 126 }
 127
 128 static void bonito_fpga_irq_enable(struct irq_data *data)
 129 {
 130         unsigned int irq = data->irq;
 131         u32 addr = (irq < 1016) ? IRQMR0 : IRQMR1;
 132         int shift = irq % 16;
 133
 134         bonito_fpga_write(addr, bonito_fpga_read(addr) & ~(1 << shift));
 135 }
 136
 137 static struct irq_chip bonito_fpga_irq_chip __read_mostly = {
 138         .name           = "bonito FPGA",
 139         .irq_mask       = bonito_fpga_irq_disable,
 140         .irq_unmask     = bonito_fpga_irq_enable,
 141 };
 142
 143 static void bonito_fpga_irq_demux(unsigned int irq, struct irq_desc *desc)
 144 {
 145         u32 val =  bonito_fpga_read(IRQSR1) << 16 |
 146                    bonito_fpga_read(IRQSR0);
 147         u32 mask = bonito_fpga_read(IRQMR1) << 16 |
 148                    bonito_fpga_read(IRQMR0);
 149
 150         int i;
 151
 152         val &= ~mask;
 153
 154         for (i = 0; i < 32; i++) {
 155                 if (!(val & (1 << i)))
 156                         continue;
 157
 158                 generic_handle_irq(FPGA_IRQ_BASE + i);
 159         }
 160 }
 161
 162 static void bonito_fpga_init(void)
 163 {
 164         int i;
 165
 166         bonito_fpga_write(IRQMR0, 0xffff); /* mask all */
 167         bonito_fpga_write(IRQMR1, 0xffff); /* mask all */
 168
 169         /* Device reset */
 170         bonito_fpga_write(DEVRSTCR1,
 171                    (1 << 2));   /* Eth */
 172
 173         /* FPGA irq require special handling */
 174         for (i = FPGA_IRQ_BASE; i < FPGA_IRQ_BASE + 32; i++) {
 175                 irq_set_chip_and_handler_name(i, &bonito_fpga_irq_chip,
 176                                               handle_level_irq, "level");
 177                 set_irq_flags(i, IRQF_VALID); /* yuck */
 178         }
 179
 180         irq_set_chained_handler(evt2irq(0x0340), bonito_fpga_irq_demux);
 181         irq_set_irq_type(evt2irq(0x0340), IRQ_TYPE_LEVEL_LOW);
 182 }
 183
 184 /*
 185 * PMIC settings
 186 *
 187 * FIXME
 188 *
 189 * bonito board needs some settings by pmic which use i2c access.
 190 * pmic settings use device_initcall() here for use it.
 191 */
 192 static __u8 *pmic_settings = NULL;
 193 static __u8 pmic_do_2A[] = {
 194         0x1C, 0x09,
 195         0x1A, 0x80,
 196         0xff, 0xff,
 197 };
 198
 199 static int __init pmic_init(void)
 200 {
 201         struct i2c_adapter *a = i2c_get_adapter(0);
 202         struct i2c_msg msg;
 203         __u8 buf[2];
 204         int i, ret;
 205
 206         if (!pmic_settings)
 207                 return 0;
 208         if (!a)
 209                 return 0;
 210
 211         msg.addr        = 0x46;
 212         msg.buf         = buf;
 213         msg.len         = 2;
 214         msg.flags       = 0;
 215
 216         for (i = 0; ; i += 2) {
 217                 buf[0] = pmic_settings[i + 0];
 218                 buf[1] = pmic_settings[i + 1];
 219
 220                 if ((0xff == buf[0]) && (0xff == buf[1]))
 221                         break;
 222
 223                 ret = i2c_transfer(a, &msg, 1);
 224                 if (ret < 0) {
 225                         pr_err("i2c transfer fail\n");
 226                         break;
 227                 }
 228         }
 229
 230         return 0;
 231 }
 232 device_initcall(pmic_init);
 233
 234 /*
 235  * LCDC0
 236  */
 237 static const struct fb_videomode lcdc0_mode = {
 238         .name           = "WVGA Panel",
 239         .xres           = 800,
 240         .yres           = 480,
 241         .left_margin    = 88,
 242         .right_margin   = 40,
 243         .hsync_len      = 128,
 244         .upper_margin   = 20,
 245         .lower_margin   = 5,
 246         .vsync_len      = 5,
 247         .sync           = 0,
 248 };
 249
 250 static struct sh_mobile_lcdc_info lcdc0_info = {
 251         .clock_source   = LCDC_CLK_BUS,
 252         .ch[0] = {
 253                 .chan                   = LCDC_CHAN_MAINLCD,
 254                 .fourcc = V4L2_PIX_FMT_RGB565,
 255                 .interface_type         = RGB24,
 256                 .clock_divider          = 5,
 257                 .flags                  = 0,
 258                 .lcd_modes              = &lcdc0_mode,
 259                 .num_modes              = 1,
 260                 .panel_cfg = {
 261                         .width  = 152,
 262                         .height = 91,
 263                 },
 264         },
 265 };
 266
 267 static struct resource lcdc0_resources[] = {
 268         [0] = {
 269                 .name   = "LCDC0",
 270                 .start  = 0xfe940000,
 271                 .end    = 0xfe943fff,
 272                 .flags  = IORESOURCE_MEM,
 273         },
 274         [1] = {
 275                 .start  = intcs_evt2irq(0x0580),
 276                 .flags  = IORESOURCE_IRQ,
 277         },
 278 };
 279
 280 static struct platform_device lcdc0_device = {
 281         .name           = "sh_mobile_lcdc_fb",
 282         .id             = 0,
 283         .resource       = lcdc0_resources,
 284         .num_resources  = ARRAY_SIZE(lcdc0_resources),
 285         .dev    = {
 286                 .platform_data  = &lcdc0_info,
 287                 .coherent_dma_mask = ~0,
 288         },
 289 };
 290
 291 /*
 292  * SMSC 9221
 293  */
 294 static struct resource smsc_resources[] = {
 295         [0] = {
 296                 .start          = 0x18010000,
 297                 .end            = 0x18011000 - 1,
 298                 .flags          = IORESOURCE_MEM,
 299         },
 300         [1] = {
 301                 .start          = FPGA_ETH_IRQ,
 302                 .flags          = IORESOURCE_IRQ,
 303         },
 304 };
 305
 306 static struct smsc911x_platform_config smsc_platdata = {
 307         .flags          = SMSC911X_USE_16BIT,
 308         .phy_interface  = PHY_INTERFACE_MODE_MII,
 309         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 310         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 311 };
 312
 313 static struct platform_device smsc_device = {
 314         .name           = "smsc911x",
 315         .dev  = {
 316                 .platform_data = &smsc_platdata,
 317         },
 318         .resource       = smsc_resources,
 319         .num_resources  = ARRAY_SIZE(smsc_resources),
 320 };
 321
 322 /*
 323  * core board devices
 324  */
 325 static struct platform_device *bonito_core_devices[] __initdata = {
 326 };
 327
 328 /*
 329  * base board devices
 330  */
 331 static struct platform_device *bonito_base_devices[] __initdata = {
 332         &lcdc0_device,
 333         &smsc_device,
 334 };
 335
 336 /*
 337  * map I/O
 338  */
 339 static struct map_desc bonito_io_desc[] __initdata = {
 340         /*
 341          * for FPGA (0x1800000-0x19ffffff)
 342          * 0x18000000-0x18002000 -> 0xf0003000-0xf0005000
 343          */
 344         {
 345                 .virtual        = 0xf0003000,
 346                 .pfn            = __phys_to_pfn(0x18000000),
 347                 .length         = PAGE_SIZE * 2,
 348                 .type           = MT_DEVICE_NONSHARED
 349         }
 350 };
 351
 352 static void __init bonito_map_io(void)
 353 {
 354         r8a7740_map_io();
 355         iotable_init(bonito_io_desc, ARRAY_SIZE(bonito_io_desc));
 356 }
 357
 358 /*
 359  * board init
 360  */
 361 #define BIT_ON(sw, bit)         (sw & (1 << bit))
 362 #define BIT_OFF(sw, bit)        (!(sw & (1 << bit)))
 363
 364 #define VCCQ1CR         IOMEM(0xE6058140)
 365 #define VCCQ1LCDCR      IOMEM(0xE6058186)
 366
 367 static void __init bonito_init(void)
 368 {
 369         u16 val;
 370
 371         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 372
 373         r8a7740_pinmux_init();
 374         bonito_fpga_init();
 375
 376         pmic_settings = pmic_do_2A;
 377
 378         /*
 379          * core board settings
 380          */
 381
 382 #ifdef CONFIG_CACHE_L2X0
 383         /* Early BRESP enable, Shared attribute override enable, 32K*8way */
 384         l2x0_init(IOMEM(0xf0002000), 0x40440000, 0x82000fff);
 385 #endif
 386
 387         r8a7740_add_standard_devices();
 388
 389         platform_add_devices(bonito_core_devices,
 390                              ARRAY_SIZE(bonito_core_devices));
 391
 392         /*
 393          * base board settings
 394          */
 395         gpio_request_one(GPIO_PORT176, GPIOF_IN, NULL);
 396         if (!gpio_get_value(GPIO_PORT176)) {
 397                 u16 bsw2;
 398                 u16 bsw3;
 399                 u16 bsw4;
 400
 401                 /*
 402                  * FPGA
 403                  */
 404                 gpio_request(GPIO_FN_CS5B,              NULL);
 405                 gpio_request(GPIO_FN_CS6A,              NULL);
 406                 gpio_request(GPIO_FN_CS5A_PORT105,      NULL);
 407                 gpio_request(GPIO_FN_IRQ10,             NULL);
 408
 409                 val = bonito_fpga_read(BVERR);
 410                 pr_info("bonito version: cpu %02x, base %02x\n",
 411                         ((val >> 8) & 0xFF),
 412                         ((val >> 0) & 0xFF));
 413
 414                 bsw2 = bonito_fpga_read(BUSSWMR2);
 415                 bsw3 = bonito_fpga_read(BUSSWMR3);
 416                 bsw4 = bonito_fpga_read(BUSSWMR4);
 417
 418                 /*
 419                  * SCIFA5 (CN42)
 420                  */
 421                 if (BIT_OFF(bsw2, 1) && /* S38.3 = ON */
 422                     BIT_OFF(bsw3, 9) && /* S39.6 = ON */
 423                     BIT_OFF(bsw4, 4)) { /* S43.1 = ON */
 424                         gpio_request(GPIO_FN_SCIFA5_TXD_PORT91, NULL);
 425                         gpio_request(GPIO_FN_SCIFA5_RXD_PORT92, NULL);
 426                 }
 427
 428                 /*
 429                  * LCDC0 (CN3)
 430                  */
 431                 if (BIT_ON(bsw2, 3) &&  /* S38.1 = OFF */
 432                     BIT_ON(bsw2, 2)) {  /* S38.2 = OFF */
 433                         gpio_request(GPIO_FN_LCDC0_SELECT,      NULL);
 434                         gpio_request(GPIO_FN_LCD0_D0,           NULL);
 435                         gpio_request(GPIO_FN_LCD0_D1,           NULL);
 436                         gpio_request(GPIO_FN_LCD0_D2,           NULL);
 437                         gpio_request(GPIO_FN_LCD0_D3,           NULL);
 438                         gpio_request(GPIO_FN_LCD0_D4,           NULL);
 439                         gpio_request(GPIO_FN_LCD0_D5,           NULL);
 440                         gpio_request(GPIO_FN_LCD0_D6,           NULL);
 441                         gpio_request(GPIO_FN_LCD0_D7,           NULL);
 442                         gpio_request(GPIO_FN_LCD0_D8,           NULL);
 443                         gpio_request(GPIO_FN_LCD0_D9,           NULL);
 444                         gpio_request(GPIO_FN_LCD0_D10,          NULL);
 445                         gpio_request(GPIO_FN_LCD0_D11,          NULL);
 446                         gpio_request(GPIO_FN_LCD0_D12,          NULL);
 447                         gpio_request(GPIO_FN_LCD0_D13,          NULL);
 448                         gpio_request(GPIO_FN_LCD0_D14,          NULL);
 449                         gpio_request(GPIO_FN_LCD0_D15,          NULL);
 450                         gpio_request(GPIO_FN_LCD0_D16,          NULL);
 451                         gpio_request(GPIO_FN_LCD0_D17,          NULL);
 452                         gpio_request(GPIO_FN_LCD0_D18_PORT163,  NULL);
 453                         gpio_request(GPIO_FN_LCD0_D19_PORT162,  NULL);
 454                         gpio_request(GPIO_FN_LCD0_D20_PORT161,  NULL);
 455                         gpio_request(GPIO_FN_LCD0_D21_PORT158,  NULL);
 456                         gpio_request(GPIO_FN_LCD0_D22_PORT160,  NULL);
 457                         gpio_request(GPIO_FN_LCD0_D23_PORT159,  NULL);
 458                         gpio_request(GPIO_FN_LCD0_DCK,          NULL);
 459                         gpio_request(GPIO_FN_LCD0_VSYN,         NULL);
 460                         gpio_request(GPIO_FN_LCD0_HSYN,         NULL);
 461                         gpio_request(GPIO_FN_LCD0_DISP,         NULL);
 462                         gpio_request(GPIO_FN_LCD0_LCLK_PORT165, NULL);
 463
 464                         gpio_request_one(GPIO_PORT61, GPIOF_OUT_INIT_HIGH,
 465                                          NULL); /* LCDDON */
 466
 467                         /* backlight on */
 468                         bonito_fpga_write(LCDCR, 1);
 469
 470                         /*  drivability Max */
 471                         __raw_writew(0x00FF , VCCQ1LCDCR);
 472                         __raw_writew(0xFFFF , VCCQ1CR);
 473                 }
 474
 475                 platform_add_devices(bonito_base_devices,
 476                                      ARRAY_SIZE(bonito_base_devices));
 477         }
 478 }
 479
 480 static void __init bonito_earlytimer_init(void)
 481 {
 482         u16 val;
 483         u8 md_ck = 0;
 484
 485         /* read MD_CK value */
 486         val = bonito_fpga_read(A1MDSR);
 487         if (val & (1 << 10))
 488                 md_ck |= MD_CK2;
 489         if (val & (1 << 9))
 490                 md_ck |= MD_CK1;
 491         if (val & (1 << 8))
 492                 md_ck |= MD_CK0;
 493
 494         r8a7740_clock_init(md_ck);
 495         shmobile_earlytimer_init();
 496 }
 497
 498 static void __init bonito_add_early_devices(void)
 499 {
 500         r8a7740_add_early_devices();
 501 }
 502
 503 MACHINE_START(BONITO, "bonito")
 504         .map_io         = bonito_map_io,
 505         .init_early     = bonito_add_early_devices,
 506         .init_irq       = r8a7740_init_irq,
 507         .handle_irq     = shmobile_handle_irq_intc,
 508         .init_machine   = bonito_init,
 509         .init_late      = shmobile_init_late,
 510         .init_time      = bonito_earlytimer_init,
 511 MACHINE_END