arch/arm/mach-s3c2440/mach-rx1950.c

   1 /* linux/arch/arm/mach-s3c2440/mach-rx1950.c
   2  *
   3  * Copyright (c) 2006-2009 Victor Chukhantsev, Denis Grigoriev,
   4  * Copyright (c) 2007-2010 Vasily Khoruzhick
   5  *
   6  * based on smdk2440 written by Ben Dooks
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12 */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/types.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/list.h>
  18 #include <linux/memblock.h>
  19 #include <linux/delay.h>
  20 #include <linux/timer.h>
  21 #include <linux/init.h>
  22 #include <linux/gpio.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/serial_core.h>
  25 #include <linux/input.h>
  26 #include <linux/gpio_keys.h>
  27 #include <linux/sysdev.h>
  28 #include <linux/pwm_backlight.h>
  29 #include <linux/pwm.h>
  30
  31 #include <linux/mtd/mtd.h>
  32 #include <linux/mtd/partitions.h>
  33
  34 #include <linux/mmc/host.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach-types.h>
  39
  40 #include <mach/regs-gpio.h>
  41 #include <mach/regs-gpioj.h>
  42 #include <mach/h1940.h>
  43 #include <mach/fb.h>
  44
  45 #include <plat/clock.h>
  46 #include <plat/regs-serial.h>
  47 #include <plat/regs-iic.h>
  48 #include <plat/mci.h>
  49 #include <plat/udc.h>
  50 #include <plat/nand.h>
  51 #include <plat/iic.h>
  52 #include <plat/devs.h>
  53 #include <plat/cpu.h>
  54 #include <plat/pm.h>
  55 #include <plat/irq.h>
  56 #include <plat/ts.h>
  57
  58 #define LCD_PWM_PERIOD 192960
  59 #define LCD_PWM_DUTY 127353
  60
  61 static struct map_desc rx1950_iodesc[] __initdata = {
  62 };
  63
  64 static struct s3c24xx_uart_clksrc rx1950_serial_clocks[] = {
  65         [0] = {
  66                .name = "fclk",
  67                .divisor = 0x0a,
  68                .min_baud = 0,
  69                .max_baud = 0,
  70         },
  71 };
  72
  73 static struct s3c2410_uartcfg rx1950_uartcfgs[] __initdata = {
  74         [0] = {
  75                .hwport = 0,
  76                .flags = 0,
  77                .ucon = 0x3c5,
  78                .ulcon = 0x03,
  79                .ufcon = 0x51,
  80                .clocks = rx1950_serial_clocks,
  81                .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
  82         },
  83         [1] = {
  84                .hwport = 1,
  85                .flags = 0,
  86                .ucon = 0x3c5,
  87                .ulcon = 0x03,
  88                .ufcon = 0x51,
  89                .clocks = rx1950_serial_clocks,
  90                .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
  91         },
  92         /* IR port */
  93         [2] = {
  94                .hwport = 2,
  95                .flags = 0,
  96                .ucon = 0x3c5,
  97                .ulcon = 0x43,
  98                .ufcon = 0xf1,
  99                .clocks = rx1950_serial_clocks,
 100                .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
 101         },
 102 };
 103
 104 static struct s3c2410fb_display rx1950_display = {
 105         .type = S3C2410_LCDCON1_TFT,
 106         .width = 240,
 107         .height = 320,
 108         .xres = 240,
 109         .yres = 320,
 110         .bpp = 16,
 111
 112         .pixclock = 260000,
 113         .left_margin = 10,
 114         .right_margin = 20,
 115         .hsync_len = 10,
 116         .upper_margin = 2,
 117         .lower_margin = 2,
 118         .vsync_len = 2,
 119
 120         .lcdcon5 = S3C2410_LCDCON5_FRM565 |
 121                            S3C2410_LCDCON5_INVVCLK |
 122                            S3C2410_LCDCON5_INVVLINE |
 123                            S3C2410_LCDCON5_INVVFRAME |
 124                            S3C2410_LCDCON5_HWSWP |
 125                            (0x02 << 13) |
 126                            (0x02 << 15),
 127
 128 };
 129
 130 static struct s3c2410fb_mach_info rx1950_lcd_cfg = {
 131         .displays = &rx1950_display,
 132         .num_displays = 1,
 133         .default_display = 0,
 134
 135         .lpcsel = 0x02,
 136         .gpccon = 0xaa9556a9,
 137         .gpccon_mask = 0xffc003fc,
 138         .gpcup = 0x0000ffff,
 139         .gpcup_mask = 0xffffffff,
 140
 141         .gpdcon = 0xaa90aaa1,
 142         .gpdcon_mask = 0xffc0fff0,
 143         .gpdup = 0x0000fcfd,
 144         .gpdup_mask = 0xffffffff,
 145
 146 };
 147
 148 static struct pwm_device *lcd_pwm;
 149
 150 void rx1950_lcd_power(int enable)
 151 {
 152         int i;
 153         static int enabled;
 154         if (enabled == enable)
 155                 return;
 156         if (!enable) {
 157
 158                 /* GPC11-GPC15->OUTPUT */
 159                 for (i = 11; i < 16; i++)
 160                         gpio_direction_output(S3C2410_GPC(i), 1);
 161
 162                 /* Wait a bit here... */
 163                 mdelay(100);
 164
 165                 /* GPD2-GPD7->OUTPUT */
 166                 /* GPD11-GPD15->OUTPUT */
 167                 /* GPD2-GPD7->1, GPD11-GPD15->1 */
 168                 for (i = 2; i < 8; i++)
 169                         gpio_direction_output(S3C2410_GPD(i), 1);
 170                 for (i = 11; i < 16; i++)
 171                         gpio_direction_output(S3C2410_GPD(i), 1);
 172
 173                 /* Wait a bit here...*/
 174                 mdelay(100);
 175
 176                 /* GPB0->OUTPUT, GPB0->0 */
 177                 gpio_direction_output(S3C2410_GPB(0), 0);
 178
 179                 /* GPC1-GPC4->OUTPUT, GPC1-4->0 */
 180                 for (i = 1; i < 5; i++)
 181                         gpio_direction_output(S3C2410_GPC(i), 0);
 182
 183                 /* GPC15-GPC11->0 */
 184                 for (i = 11; i < 16; i++)
 185                         gpio_direction_output(S3C2410_GPC(i), 0);
 186
 187                 /* GPD15-GPD11->0, GPD2->GPD7->0 */
 188                 for (i = 11; i < 16; i++)
 189                         gpio_direction_output(S3C2410_GPD(i), 0);
 190
 191                 for (i = 2; i < 8; i++)
 192                         gpio_direction_output(S3C2410_GPD(i), 0);
 193
 194                 /* GPC6->0, GPC7->0, GPC5->0 */
 195                 gpio_direction_output(S3C2410_GPC(6), 0);
 196                 gpio_direction_output(S3C2410_GPC(7), 0);
 197                 gpio_direction_output(S3C2410_GPC(5), 0);
 198
 199                 /* GPB1->OUTPUT, GPB1->0 */
 200                 gpio_direction_output(S3C2410_GPB(1), 0);
 201                 pwm_config(lcd_pwm, 0, LCD_PWM_PERIOD);
 202                 pwm_disable(lcd_pwm);
 203
 204                 /* GPC0->0, GPC10->0 */
 205                 gpio_direction_output(S3C2410_GPC(0), 0);
 206                 gpio_direction_output(S3C2410_GPC(10), 0);
 207         } else {
 208                 pwm_config(lcd_pwm, LCD_PWM_DUTY, LCD_PWM_PERIOD);
 209                 pwm_enable(lcd_pwm);
 210
 211                 gpio_direction_output(S3C2410_GPC(0), 1);
 212                 gpio_direction_output(S3C2410_GPC(5), 1);
 213
 214                 s3c_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPB1_TOUT1);
 215                 gpio_direction_output(S3C2410_GPC(7), 1);
 216
 217                 for (i = 1; i < 5; i++)
 218                         s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
 219
 220                 for (i = 11; i < 16; i++)
 221                         s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
 222
 223                 for (i = 2; i < 8; i++)
 224                         s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
 225
 226                 for (i = 11; i < 16; i++)
 227                         s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
 228
 229                 gpio_direction_output(S3C2410_GPC(10), 1);
 230                 gpio_direction_output(S3C2410_GPC(6), 1);
 231         }
 232         enabled = enable;
 233 }
 234
 235 static void rx1950_bl_power(int enable)
 236 {
 237         static int enabled;
 238         if (enabled == enable)
 239                 return;
 240         if (!enable) {
 241                         gpio_direction_output(S3C2410_GPB(0), 0);
 242         } else {
 243                         /* LED driver need a "push" to power on */
 244                         gpio_direction_output(S3C2410_GPB(0), 1);
 245                         /* Warm up backlight for one period of PWM.
 246                          * Without this trick its almost impossible to
 247                          * enable backlight with low brightness value
 248                          */
 249                         ndelay(48000);
 250                         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 251         }
 252         enabled = enable;
 253 }
 254
 255 static int rx1950_backlight_init(struct device *dev)
 256 {
 257         WARN_ON(gpio_request(S3C2410_GPB(0), "Backlight"));
 258         lcd_pwm = pwm_request(1, "RX1950 LCD");
 259         if (IS_ERR(lcd_pwm)) {
 260                 dev_err(dev, "Unable to request PWM for LCD power!\n");
 261                 return PTR_ERR(lcd_pwm);
 262         }
 263
 264         rx1950_lcd_power(1);
 265         rx1950_bl_power(1);
 266
 267         return 0;
 268 }
 269
 270 static void rx1950_backlight_exit(struct device *dev)
 271 {
 272         rx1950_bl_power(0);
 273         rx1950_lcd_power(0);
 274
 275         pwm_free(lcd_pwm);
 276         gpio_free(S3C2410_GPB(0));
 277 }
 278
 279
 280 static int rx1950_backlight_notify(struct device *dev, int brightness)
 281 {
 282         if (!brightness) {
 283                 rx1950_bl_power(0);
 284                 rx1950_lcd_power(0);
 285         } else {
 286                 rx1950_lcd_power(1);
 287                 rx1950_bl_power(1);
 288         }
 289         return brightness;
 290 }
 291
 292 static struct platform_pwm_backlight_data rx1950_backlight_data = {
 293         .pwm_id = 0,
 294         .max_brightness = 24,
 295         .dft_brightness = 4,
 296         .pwm_period_ns = 48000,
 297         .init = rx1950_backlight_init,
 298         .notify = rx1950_backlight_notify,
 299         .exit = rx1950_backlight_exit,
 300 };
 301
 302 static struct platform_device rx1950_backlight = {
 303         .name = "pwm-backlight",
 304         .dev = {
 305                 .parent = &s3c_device_timer[0].dev,
 306                 .platform_data = &rx1950_backlight_data,
 307         },
 308 };
 309
 310 static void rx1950_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 311 {
 312         switch (power_mode) {
 313         case MMC_POWER_OFF:
 314                 gpio_direction_output(S3C2410_GPJ(1), 0);
 315                 break;
 316         case MMC_POWER_UP:
 317         case MMC_POWER_ON:
 318                 gpio_direction_output(S3C2410_GPJ(1), 1);
 319                 break;
 320         default:
 321                 break;
 322         }
 323 }
 324
 325 static struct s3c24xx_mci_pdata rx1950_mmc_cfg __initdata = {
 326         .gpio_detect = S3C2410_GPF(5),
 327         .gpio_wprotect = S3C2410_GPH(8),
 328         .set_power = rx1950_set_mmc_power,
 329         .ocr_avail = MMC_VDD_32_33,
 330 };
 331
 332 static struct mtd_partition rx1950_nand_part[] = {
 333         [0] = {
 334                         .name = "Boot0",
 335                         .offset = 0,
 336                         .size = 0x4000,
 337                         .mask_flags = MTD_WRITEABLE,
 338         },
 339         [1] = {
 340                         .name = "Boot1",
 341                         .offset = MTDPART_OFS_APPEND,
 342                         .size = 0x40000,
 343                         .mask_flags = MTD_WRITEABLE,
 344         },
 345         [2] = {
 346                         .name = "Kernel",
 347                         .offset = MTDPART_OFS_APPEND,
 348                         .size = 0x300000,
 349                         .mask_flags = 0,
 350         },
 351         [3] = {
 352                         .name = "Filesystem",
 353                         .offset = MTDPART_OFS_APPEND,
 354                         .size = MTDPART_SIZ_FULL,
 355                         .mask_flags = 0,
 356         },
 357 };
 358
 359 static struct s3c2410_nand_set rx1950_nand_sets[] = {
 360         [0] = {
 361                         .name = "Internal",
 362                         .nr_chips = 1,
 363                         .nr_partitions = ARRAY_SIZE(rx1950_nand_part),
 364                         .partitions = rx1950_nand_part,
 365         },
 366 };
 367
 368 static struct s3c2410_platform_nand rx1950_nand_info = {
 369         .tacls = 25,
 370         .twrph0 = 50,
 371         .twrph1 = 15,
 372         .nr_sets = ARRAY_SIZE(rx1950_nand_sets),
 373         .sets = rx1950_nand_sets,
 374 };
 375
 376 static void rx1950_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 377 {
 378         switch (cmd) {
 379         case S3C2410_UDC_P_ENABLE:
 380                 gpio_direction_output(S3C2410_GPJ(5), 1);
 381                 break;
 382         case S3C2410_UDC_P_DISABLE:
 383                 gpio_direction_output(S3C2410_GPJ(5), 0);
 384                 break;
 385         case S3C2410_UDC_P_RESET:
 386                 break;
 387         default:
 388                 break;
 389         }
 390 }
 391
 392 static struct s3c2410_udc_mach_info rx1950_udc_cfg __initdata = {
 393         .udc_command = rx1950_udc_pullup,
 394         .vbus_pin = S3C2410_GPG(5),
 395         .vbus_pin_inverted = 1,
 396 };
 397
 398 static struct s3c2410_ts_mach_info rx1950_ts_cfg __initdata = {
 399         .delay = 10000,
 400         .presc = 49,
 401         .oversampling_shift = 3,
 402 };
 403
 404 static struct gpio_keys_button rx1950_gpio_keys_table[] = {
 405         {
 406                 .code           = KEY_POWER,
 407                 .gpio           = S3C2410_GPF(0),
 408                 .active_low     = 1,
 409                 .desc           = "Power button",
 410                 .wakeup         = 1,
 411         },
 412         {
 413                 .code           = KEY_F5,
 414                 .gpio           = S3C2410_GPF(7),
 415                 .active_low     = 1,
 416                 .desc           = "Record button",
 417         },
 418         {
 419                 .code           = KEY_F1,
 420                 .gpio           = S3C2410_GPG(0),
 421                 .active_low     = 1,
 422                 .desc           = "Calendar button",
 423         },
 424         {
 425                 .code           = KEY_F2,
 426                 .gpio           = S3C2410_GPG(2),
 427                 .active_low     = 1,
 428                 .desc           = "Contacts button",
 429         },
 430         {
 431                 .code           = KEY_F3,
 432                 .gpio           = S3C2410_GPG(3),
 433                 .active_low     = 1,
 434                 .desc           = "Mail button",
 435         },
 436         {
 437                 .code           = KEY_F4,
 438                 .gpio           = S3C2410_GPG(7),
 439                 .active_low     = 1,
 440                 .desc           = "WLAN button",
 441         },
 442         {
 443                 .code           = KEY_LEFT,
 444                 .gpio           = S3C2410_GPG(10),
 445                 .active_low     = 1,
 446                 .desc           = "Left button",
 447         },
 448         {
 449                 .code           = KEY_RIGHT,
 450                 .gpio           = S3C2410_GPG(11),
 451                 .active_low     = 1,
 452                 .desc           = "Right button",
 453         },
 454         {
 455                 .code           = KEY_UP,
 456                 .gpio           = S3C2410_GPG(4),
 457                 .active_low     = 1,
 458                 .desc           = "Up button",
 459         },
 460         {
 461                 .code           = KEY_DOWN,
 462                 .gpio           = S3C2410_GPG(6),
 463                 .active_low     = 1,
 464                 .desc           = "Down button",
 465         },
 466         {
 467                 .code           = KEY_ENTER,
 468                 .gpio           = S3C2410_GPG(9),
 469                 .active_low     = 1,
 470                 .desc           = "Ok button"
 471         },
 472 };
 473
 474 static struct gpio_keys_platform_data rx1950_gpio_keys_data = {
 475         .buttons = rx1950_gpio_keys_table,
 476         .nbuttons = ARRAY_SIZE(rx1950_gpio_keys_table),
 477 };
 478
 479 static struct platform_device rx1950_device_gpiokeys = {
 480         .name = "gpio-keys",
 481         .dev.platform_data = &rx1950_gpio_keys_data,
 482 };
 483
 484 static struct s3c2410_platform_i2c rx1950_i2c_data = {
 485         .flags = 0,
 486         .slave_addr = 0x42,
 487         .frequency = 400 * 1000,
 488         .sda_delay = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
 489 };
 490
 491 static struct platform_device *rx1950_devices[] __initdata = {
 492         &s3c_device_lcd,
 493         &s3c_device_wdt,
 494         &s3c_device_i2c0,
 495         &s3c_device_iis,
 496         &s3c_device_usbgadget,
 497         &s3c_device_rtc,
 498         &s3c_device_nand,
 499         &s3c_device_sdi,
 500         &s3c_device_adc,
 501         &s3c_device_ts,
 502         &s3c_device_timer[0],
 503         &s3c_device_timer[1],
 504         &rx1950_backlight,
 505         &rx1950_device_gpiokeys,
 506 };
 507
 508 static struct clk *rx1950_clocks[] __initdata = {
 509         &s3c24xx_clkout0,
 510         &s3c24xx_clkout1,
 511 };
 512
 513 static void __init rx1950_map_io(void)
 514 {
 515         s3c24xx_clkout0.parent  = &clk_h;
 516         s3c24xx_clkout1.parent  = &clk_f;
 517
 518         s3c24xx_register_clocks(rx1950_clocks, ARRAY_SIZE(rx1950_clocks));
 519
 520         s3c24xx_init_io(rx1950_iodesc, ARRAY_SIZE(rx1950_iodesc));
 521         s3c24xx_init_clocks(16934000);
 522         s3c24xx_init_uarts(rx1950_uartcfgs, ARRAY_SIZE(rx1950_uartcfgs));
 523
 524         /* setup PM */
 525
 526 #ifdef CONFIG_PM_H1940
 527         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 8);
 528 #endif
 529
 530         s3c_pm_init();
 531 }
 532
 533 static void __init rx1950_init_machine(void)
 534 {
 535         int i;
 536
 537         s3c24xx_fb_set_platdata(&rx1950_lcd_cfg);
 538         s3c24xx_udc_set_platdata(&rx1950_udc_cfg);
 539         s3c24xx_ts_set_platdata(&rx1950_ts_cfg);
 540         s3c24xx_mci_set_platdata(&rx1950_mmc_cfg);
 541         s3c_i2c0_set_platdata(&rx1950_i2c_data);
 542         s3c_nand_set_platdata(&rx1950_nand_info);
 543
 544         /* Turn off suspend on both USB ports, and switch the
 545          * selectable USB port to USB device mode. */
 546         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 547                                                 S3C2410_MISCCR_USBSUSPND0 |
 548                                                 S3C2410_MISCCR_USBSUSPND1, 0x0);
 549
 550         WARN_ON(gpio_request(S3C2410_GPJ(5), "UDC pullup"));
 551         gpio_direction_output(S3C2410_GPJ(5), 0);
 552
 553         /* mmc power is disabled by default */
 554         WARN_ON(gpio_request(S3C2410_GPJ(1), "MMC power"));
 555         gpio_direction_output(S3C2410_GPJ(1), 0);
 556
 557         for (i = 0; i < 8; i++)
 558                 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
 559
 560         for (i = 10; i < 16; i++)
 561                 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
 562
 563         for (i = 2; i < 8; i++)
 564                 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
 565
 566         for (i = 11; i < 16; i++)
 567                 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
 568
 569         WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power"));
 570
 571         platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
 572 }
 573
 574 /* H1940 and RX3715 need to reserve this for suspend */
 575 static void __init rx1950_reserve(void)
 576 {
 577         memblock_reserve(0x30003000, 0x1000);
 578         memblock_reserve(0x30081000, 0x1000);
 579 }
 580
 581 MACHINE_START(RX1950, "HP iPAQ RX1950")
 582     /* Maintainers: Vasily Khoruzhick */
 583         .boot_params = S3C2410_SDRAM_PA + 0x100,
 584         .map_io = rx1950_map_io,
 585         .reserve        = rx1950_reserve,
 586         .init_irq = s3c24xx_init_irq,
 587         .init_machine = rx1950_init_machine,
 588         .timer = &s3c24xx_timer,
 589 MACHINE_END