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/smsc911x.h>
  30 #include <linux/videodev2.h>
  31 #include <mach/common.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/time.h>
  36 #include <asm/hardware/cache-l2x0.h>
  37 #include <mach/r8a7740.h>
  38 #include <video/sh_mobile_lcdc.h>
  39
  40 /*
  41  * CS   Address         device                  note
  42  *----------------------------------------------------------------
  43  * 0    0x0000_0000     NOR Flash (64MB)        SW12 : bit3 = OFF
  44  * 2    0x0800_0000     ExtNOR (64MB)           SW12 : bit3 = OFF
  45  * 4                    -
  46  * 5A                   -
  47  * 5B   0x1600_0000     SRAM (8MB)
  48  * 6    0x1800_0000     FPGA (64K)
  49  *      0x1801_0000     Ether (4KB)
  50  *      0x1801_1000     USB (4KB)
  51  */
  52
  53 /*
  54  * SW12
  55  *
  56  *      bit1                    bit2                    bit3
  57  *----------------------------------------------------------------------------
  58  * ON   NOR WriteProtect        NAND WriteProtect       CS0 ExtNOR / CS2 NOR
  59  * OFF  NOR Not WriteProtect    NAND Not WriteProtect   CS0 NOR    / CS2 ExtNOR
  60  */
  61
  62 /*
  63  * SCIFA5 (CN42)
  64  *
  65  * S38.3 = ON
  66  * S39.6 = ON
  67  * S43.1 = ON
  68  */
  69
  70 /*
  71  * LCDC0 (CN3/CN4/CN7)
  72  *
  73  * S38.1 = OFF
  74  * S38.2 = OFF
  75  */
  76
  77 /*
  78  * FPGA
  79  */
  80 #define IRQSR0          0x0020
  81 #define IRQSR1          0x0022
  82 #define IRQMR0          0x0030
  83 #define IRQMR1          0x0032
  84 #define BUSSWMR1        0x0070
  85 #define BUSSWMR2        0x0072
  86 #define BUSSWMR3        0x0074
  87 #define BUSSWMR4        0x0076
  88
  89 #define LCDCR           0x10B4
  90 #define DEVRSTCR1       0x10D0
  91 #define DEVRSTCR2       0x10D2
  92 #define A1MDSR          0x10E0
  93 #define BVERR           0x1100
  94
  95 /* FPGA IRQ */
  96 #define FPGA_IRQ_BASE           (512)
  97 #define FPGA_IRQ0               (FPGA_IRQ_BASE)
  98 #define FPGA_IRQ1               (FPGA_IRQ_BASE + 16)
  99 #define FPGA_ETH_IRQ            (FPGA_IRQ0 + 15)
 100 static u16 bonito_fpga_read(u32 offset)
 101 {
 102         return __raw_readw(0xf0003000 + offset);
 103 }
 104
 105 static void bonito_fpga_write(u32 offset, u16 val)
 106 {
 107         __raw_writew(val, 0xf0003000 + offset);
 108 }
 109
 110 static void bonito_fpga_irq_disable(struct irq_data *data)
 111 {
 112         unsigned int irq = data->irq;
 113         u32 addr = (irq < 1016) ? IRQMR0 : IRQMR1;
 114         int shift = irq % 16;
 115
 116         bonito_fpga_write(addr, bonito_fpga_read(addr) | (1 << shift));
 117 }
 118
 119 static void bonito_fpga_irq_enable(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 struct irq_chip bonito_fpga_irq_chip __read_mostly = {
 129         .name           = "bonito FPGA",
 130         .irq_mask       = bonito_fpga_irq_disable,
 131         .irq_unmask     = bonito_fpga_irq_enable,
 132 };
 133
 134 static void bonito_fpga_irq_demux(unsigned int irq, struct irq_desc *desc)
 135 {
 136         u32 val =  bonito_fpga_read(IRQSR1) << 16 |
 137                    bonito_fpga_read(IRQSR0);
 138         u32 mask = bonito_fpga_read(IRQMR1) << 16 |
 139                    bonito_fpga_read(IRQMR0);
 140
 141         int i;
 142
 143         val &= ~mask;
 144
 145         for (i = 0; i < 32; i++) {
 146                 if (!(val & (1 << i)))
 147                         continue;
 148
 149                 generic_handle_irq(FPGA_IRQ_BASE + i);
 150         }
 151 }
 152
 153 static void bonito_fpga_init(void)
 154 {
 155         int i;
 156
 157         bonito_fpga_write(IRQMR0, 0xffff); /* mask all */
 158         bonito_fpga_write(IRQMR1, 0xffff); /* mask all */
 159
 160         /* Device reset */
 161         bonito_fpga_write(DEVRSTCR1,
 162                    (1 << 2));   /* Eth */
 163
 164         /* FPGA irq require special handling */
 165         for (i = FPGA_IRQ_BASE; i < FPGA_IRQ_BASE + 32; i++) {
 166                 irq_set_chip_and_handler_name(i, &bonito_fpga_irq_chip,
 167                                               handle_level_irq, "level");
 168                 set_irq_flags(i, IRQF_VALID); /* yuck */
 169         }
 170
 171         irq_set_chained_handler(evt2irq(0x0340), bonito_fpga_irq_demux);
 172         irq_set_irq_type(evt2irq(0x0340), IRQ_TYPE_LEVEL_LOW);
 173 }
 174
 175 /*
 176 * PMIC settings
 177 *
 178 * FIXME
 179 *
 180 * bonito board needs some settings by pmic which use i2c access.
 181 * pmic settings use device_initcall() here for use it.
 182 */
 183 static __u8 *pmic_settings = NULL;
 184 static __u8 pmic_do_2A[] = {
 185         0x1C, 0x09,
 186         0x1A, 0x80,
 187         0xff, 0xff,
 188 };
 189
 190 static int __init pmic_init(void)
 191 {
 192         struct i2c_adapter *a = i2c_get_adapter(0);
 193         struct i2c_msg msg;
 194         __u8 buf[2];
 195         int i, ret;
 196
 197         if (!pmic_settings)
 198                 return 0;
 199         if (!a)
 200                 return 0;
 201
 202         msg.addr        = 0x46;
 203         msg.buf         = buf;
 204         msg.len         = 2;
 205         msg.flags       = 0;
 206
 207         for (i = 0; ; i += 2) {
 208                 buf[0] = pmic_settings[i + 0];
 209                 buf[1] = pmic_settings[i + 1];
 210
 211                 if ((0xff == buf[0]) && (0xff == buf[1]))
 212                         break;
 213
 214                 ret = i2c_transfer(a, &msg, 1);
 215                 if (ret < 0) {
 216                         pr_err("i2c transfer fail\n");
 217                         break;
 218                 }
 219         }
 220
 221         return 0;
 222 }
 223 device_initcall(pmic_init);
 224
 225 /*
 226  * LCDC0
 227  */
 228 static const struct fb_videomode lcdc0_mode = {
 229         .name           = "WVGA Panel",
 230         .xres           = 800,
 231         .yres           = 480,
 232         .left_margin    = 88,
 233         .right_margin   = 40,
 234         .hsync_len      = 128,
 235         .upper_margin   = 20,
 236         .lower_margin   = 5,
 237         .vsync_len      = 5,
 238         .sync           = 0,
 239 };
 240
 241 static struct sh_mobile_lcdc_info lcdc0_info = {
 242         .clock_source   = LCDC_CLK_BUS,
 243         .ch[0] = {
 244                 .chan                   = LCDC_CHAN_MAINLCD,
 245                 .fourcc = V4L2_PIX_FMT_RGB565,
 246                 .interface_type         = RGB24,
 247                 .clock_divider          = 5,
 248                 .flags                  = 0,
 249                 .lcd_modes              = &lcdc0_mode,
 250                 .num_modes              = 1,
 251                 .panel_cfg = {
 252                         .width  = 152,
 253                         .height = 91,
 254                 },
 255         },
 256 };
 257
 258 static struct resource lcdc0_resources[] = {
 259         [0] = {
 260                 .name   = "LCDC0",
 261                 .start  = 0xfe940000,
 262                 .end    = 0xfe943fff,
 263                 .flags  = IORESOURCE_MEM,
 264         },
 265         [1] = {
 266                 .start  = intcs_evt2irq(0x0580),
 267                 .flags  = IORESOURCE_IRQ,
 268         },
 269 };
 270
 271 static struct platform_device lcdc0_device = {
 272         .name           = "sh_mobile_lcdc_fb",
 273         .id             = 0,
 274         .resource       = lcdc0_resources,
 275         .num_resources  = ARRAY_SIZE(lcdc0_resources),
 276         .dev    = {
 277                 .platform_data  = &lcdc0_info,
 278                 .coherent_dma_mask = ~0,
 279         },
 280 };
 281
 282 /*
 283  * SMSC 9221
 284  */
 285 static struct resource smsc_resources[] = {
 286         [0] = {
 287                 .start          = 0x18010000,
 288                 .end            = 0x18011000 - 1,
 289                 .flags          = IORESOURCE_MEM,
 290         },
 291         [1] = {
 292                 .start          = FPGA_ETH_IRQ,
 293                 .flags          = IORESOURCE_IRQ,
 294         },
 295 };
 296
 297 static struct smsc911x_platform_config smsc_platdata = {
 298         .flags          = SMSC911X_USE_16BIT,
 299         .phy_interface  = PHY_INTERFACE_MODE_MII,
 300         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 301         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 302 };
 303
 304 static struct platform_device smsc_device = {
 305         .name           = "smsc911x",
 306         .dev  = {
 307                 .platform_data = &smsc_platdata,
 308         },
 309         .resource       = smsc_resources,
 310         .num_resources  = ARRAY_SIZE(smsc_resources),
 311 };
 312
 313 /*
 314  * core board devices
 315  */
 316 static struct platform_device *bonito_core_devices[] __initdata = {
 317 };
 318
 319 /*
 320  * base board devices
 321  */
 322 static struct platform_device *bonito_base_devices[] __initdata = {
 323         &lcdc0_device,
 324         &smsc_device,
 325 };
 326
 327 /*
 328  * map I/O
 329  */
 330 static struct map_desc bonito_io_desc[] __initdata = {
 331          /*
 332           * for CPGA/INTC/PFC
 333           * 0xe6000000-0xefffffff -> 0xe6000000-0xefffffff
 334           */
 335         {
 336                 .virtual        = 0xe6000000,
 337                 .pfn            = __phys_to_pfn(0xe6000000),
 338                 .length         = 160 << 20,
 339                 .type           = MT_DEVICE_NONSHARED
 340         },
 341 #ifdef CONFIG_CACHE_L2X0
 342         /*
 343          * for l2x0_init()
 344          * 0xf0100000-0xf0101000 -> 0xf0002000-0xf0003000
 345          */
 346         {
 347                 .virtual        = 0xf0002000,
 348                 .pfn            = __phys_to_pfn(0xf0100000),
 349                 .length         = PAGE_SIZE,
 350                 .type           = MT_DEVICE_NONSHARED
 351         },
 352 #endif
 353         /*
 354          * for FPGA (0x1800000-0x19ffffff)
 355          * 0x18000000-0x18002000 -> 0xf0003000-0xf0005000
 356          */
 357         {
 358                 .virtual        = 0xf0003000,
 359                 .pfn            = __phys_to_pfn(0x18000000),
 360                 .length         = PAGE_SIZE * 2,
 361                 .type           = MT_DEVICE_NONSHARED
 362         }
 363 };
 364
 365 static void __init bonito_map_io(void)
 366 {
 367         iotable_init(bonito_io_desc, ARRAY_SIZE(bonito_io_desc));
 368
 369         /* setup early devices and console here as well */
 370         r8a7740_add_early_devices();
 371         shmobile_setup_console();
 372 }
 373
 374 /*
 375  * board init
 376  */
 377 #define BIT_ON(sw, bit)         (sw & (1 << bit))
 378 #define BIT_OFF(sw, bit)        (!(sw & (1 << bit)))
 379
 380 #define VCCQ1CR         0xE6058140
 381 #define VCCQ1LCDCR      0xE6058186
 382
 383 static void __init bonito_init(void)
 384 {
 385         u16 val;
 386
 387         r8a7740_pinmux_init();
 388         bonito_fpga_init();
 389
 390         pmic_settings = pmic_do_2A;
 391
 392         /*
 393          * core board settings
 394          */
 395
 396 #ifdef CONFIG_CACHE_L2X0
 397         /* Early BRESP enable, Shared attribute override enable, 32K*8way */
 398         l2x0_init(__io(0xf0002000), 0x40440000, 0x82000fff);
 399 #endif
 400
 401         r8a7740_add_standard_devices();
 402
 403         platform_add_devices(bonito_core_devices,
 404                              ARRAY_SIZE(bonito_core_devices));
 405
 406         /*
 407          * base board settings
 408          */
 409         gpio_request(GPIO_PORT176, NULL);
 410         gpio_direction_input(GPIO_PORT176);
 411         if (!gpio_get_value(GPIO_PORT176)) {
 412                 u16 bsw2;
 413                 u16 bsw3;
 414                 u16 bsw4;
 415
 416                 /*
 417                  * FPGA
 418                  */
 419                 gpio_request(GPIO_FN_CS5B,              NULL);
 420                 gpio_request(GPIO_FN_CS6A,              NULL);
 421                 gpio_request(GPIO_FN_CS5A_PORT105,      NULL);
 422                 gpio_request(GPIO_FN_IRQ10,             NULL);
 423
 424                 val = bonito_fpga_read(BVERR);
 425                 pr_info("bonito version: cpu %02x, base %02x\n",
 426                         ((val >> 8) & 0xFF),
 427                         ((val >> 0) & 0xFF));
 428
 429                 bsw2 = bonito_fpga_read(BUSSWMR2);
 430                 bsw3 = bonito_fpga_read(BUSSWMR3);
 431                 bsw4 = bonito_fpga_read(BUSSWMR4);
 432
 433                 /*
 434                  * SCIFA5 (CN42)
 435                  */
 436                 if (BIT_OFF(bsw2, 1) && /* S38.3 = ON */
 437                     BIT_OFF(bsw3, 9) && /* S39.6 = ON */
 438                     BIT_OFF(bsw4, 4)) { /* S43.1 = ON */
 439                         gpio_request(GPIO_FN_SCIFA5_TXD_PORT91, NULL);
 440                         gpio_request(GPIO_FN_SCIFA5_RXD_PORT92, NULL);
 441                 }
 442
 443                 /*
 444                  * LCDC0 (CN3)
 445                  */
 446                 if (BIT_ON(bsw2, 3) &&  /* S38.1 = OFF */
 447                     BIT_ON(bsw2, 2)) {  /* S38.2 = OFF */
 448                         gpio_request(GPIO_FN_LCDC0_SELECT,      NULL);
 449                         gpio_request(GPIO_FN_LCD0_D0,           NULL);
 450                         gpio_request(GPIO_FN_LCD0_D1,           NULL);
 451                         gpio_request(GPIO_FN_LCD0_D2,           NULL);
 452                         gpio_request(GPIO_FN_LCD0_D3,           NULL);
 453                         gpio_request(GPIO_FN_LCD0_D4,           NULL);
 454                         gpio_request(GPIO_FN_LCD0_D5,           NULL);
 455                         gpio_request(GPIO_FN_LCD0_D6,           NULL);
 456                         gpio_request(GPIO_FN_LCD0_D7,           NULL);
 457                         gpio_request(GPIO_FN_LCD0_D8,           NULL);
 458                         gpio_request(GPIO_FN_LCD0_D9,           NULL);
 459                         gpio_request(GPIO_FN_LCD0_D10,          NULL);
 460                         gpio_request(GPIO_FN_LCD0_D11,          NULL);
 461                         gpio_request(GPIO_FN_LCD0_D12,          NULL);
 462                         gpio_request(GPIO_FN_LCD0_D13,          NULL);
 463                         gpio_request(GPIO_FN_LCD0_D14,          NULL);
 464                         gpio_request(GPIO_FN_LCD0_D15,          NULL);
 465                         gpio_request(GPIO_FN_LCD0_D16,          NULL);
 466                         gpio_request(GPIO_FN_LCD0_D17,          NULL);
 467                         gpio_request(GPIO_FN_LCD0_D18_PORT163,  NULL);
 468                         gpio_request(GPIO_FN_LCD0_D19_PORT162,  NULL);
 469                         gpio_request(GPIO_FN_LCD0_D20_PORT161,  NULL);
 470                         gpio_request(GPIO_FN_LCD0_D21_PORT158,  NULL);
 471                         gpio_request(GPIO_FN_LCD0_D22_PORT160,  NULL);
 472                         gpio_request(GPIO_FN_LCD0_D23_PORT159,  NULL);
 473                         gpio_request(GPIO_FN_LCD0_DCK,          NULL);
 474                         gpio_request(GPIO_FN_LCD0_VSYN,         NULL);
 475                         gpio_request(GPIO_FN_LCD0_HSYN,         NULL);
 476                         gpio_request(GPIO_FN_LCD0_DISP,         NULL);
 477                         gpio_request(GPIO_FN_LCD0_LCLK_PORT165, NULL);
 478
 479                         gpio_request(GPIO_PORT61, NULL); /* LCDDON */
 480                         gpio_direction_output(GPIO_PORT61, 1);
 481
 482                         /* backlight on */
 483                         bonito_fpga_write(LCDCR, 1);
 484
 485                         /*  drivability Max */
 486                         __raw_writew(0x00FF , VCCQ1LCDCR);
 487                         __raw_writew(0xFFFF , VCCQ1CR);
 488                 }
 489
 490                 platform_add_devices(bonito_base_devices,
 491                                      ARRAY_SIZE(bonito_base_devices));
 492         }
 493 }
 494
 495 static void __init bonito_timer_init(void)
 496 {
 497         u16 val;
 498         u8 md_ck = 0;
 499
 500         /* read MD_CK value */
 501         val = bonito_fpga_read(A1MDSR);
 502         if (val & (1 << 10))
 503                 md_ck |= MD_CK2;
 504         if (val & (1 << 9))
 505                 md_ck |= MD_CK1;
 506         if (val & (1 << 8))
 507                 md_ck |= MD_CK0;
 508
 509         r8a7740_clock_init(md_ck);
 510         shmobile_timer.init();
 511 }
 512
 513 struct sys_timer bonito_timer = {
 514         .init   = bonito_timer_init,
 515 };
 516
 517 MACHINE_START(BONITO, "bonito")
 518         .map_io         = bonito_map_io,
 519         .init_irq       = r8a7740_init_irq,
 520         .handle_irq     = shmobile_handle_irq_intc,
 521         .init_machine   = bonito_init,
 522         .timer          = &bonito_timer,
 523 MACHINE_END