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/delay.h>
  19 #include <linux/timer.h>
  20 #include <linux/init.h>
  21 #include <linux/gpio.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/serial_core.h>
  24 #include <linux/input.h>
  25 #include <linux/gpio_keys.h>
  26 #include <linux/sysdev.h>
  27 #include <linux/pwm_backlight.h>
  28 #include <linux/pwm.h>
  29
  30 #include <linux/mtd/mtd.h>
  31 #include <linux/mtd/partitions.h>
  32
  33 #include <linux/mmc/host.h>
  34
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach-types.h>
  38
  39 #include <mach/regs-gpio.h>
  40 #include <mach/regs-gpioj.h>
  41 #include <mach/h1940.h>
  42 #include <mach/fb.h>
  43
  44 #include <plat/clock.h>
  45 #include <plat/regs-serial.h>
  46 #include <plat/regs-iic.h>
  47 #include <plat/mci.h>
  48 #include <plat/udc.h>
  49 #include <plat/nand.h>
  50 #include <plat/iic.h>
  51 #include <plat/devs.h>
  52 #include <plat/cpu.h>
  53 #include <plat/pm.h>
  54 #include <plat/irq.h>
  55 #include <plat/ts.h>
  56
  57 #define LCD_PWM_PERIOD 192960
  58 #define LCD_PWM_DUTY 127353
  59
  60 static struct map_desc rx1950_iodesc[] __initdata = {
  61 };
  62
  63 static struct s3c24xx_uart_clksrc rx1950_serial_clocks[] = {
  64         [0] = {
  65                .name = "fclk",
  66                .divisor = 0x0a,
  67                .min_baud = 0,
  68                .max_baud = 0,
  69         },
  70 };
  71
  72 static struct s3c2410_uartcfg rx1950_uartcfgs[] __initdata = {
  73         [0] = {
  74                .hwport = 0,
  75                .flags = 0,
  76                .ucon = 0x3c5,
  77                .ulcon = 0x03,
  78                .ufcon = 0x51,
  79                .clocks = rx1950_serial_clocks,
  80                .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
  81         },
  82         [1] = {
  83                .hwport = 1,
  84                .flags = 0,
  85                .ucon = 0x3c5,
  86                .ulcon = 0x03,
  87                .ufcon = 0x51,
  88                .clocks = rx1950_serial_clocks,
  89                .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
  90         },
  91         /* IR port */
  92         [2] = {
  93                .hwport = 2,
  94                .flags = 0,
  95                .ucon = 0x3c5,
  96                .ulcon = 0x43,
  97                .ufcon = 0xf1,
  98                .clocks = rx1950_serial_clocks,
  99                .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
 100         },
 101 };
 102
 103 static struct s3c2410fb_display rx1950_display = {
 104         .type = S3C2410_LCDCON1_TFT,
 105         .width = 240,
 106         .height = 320,
 107         .xres = 240,
 108         .yres = 320,
 109         .bpp = 16,
 110
 111         .pixclock = 260000,
 112         .left_margin = 10,
 113         .right_margin = 20,
 114         .hsync_len = 10,
 115         .upper_margin = 2,
 116         .lower_margin = 2,
 117         .vsync_len = 2,
 118
 119         .lcdcon5 = S3C2410_LCDCON5_FRM565 |
 120                            S3C2410_LCDCON5_INVVCLK |
 121                            S3C2410_LCDCON5_INVVLINE |
 122                            S3C2410_LCDCON5_INVVFRAME |
 123                            S3C2410_LCDCON5_HWSWP |
 124                            (0x02 << 13) |
 125                            (0x02 << 15),
 126
 127 };
 128
 129 static struct s3c2410fb_mach_info rx1950_lcd_cfg = {
 130         .displays = &rx1950_display,
 131         .num_displays = 1,
 132         .default_display = 0,
 133
 134         .lpcsel = 0x02,
 135         .gpccon = 0xaa9556a9,
 136         .gpccon_mask = 0xffc003fc,
 137         .gpcup = 0x0000ffff,
 138         .gpcup_mask = 0xffffffff,
 139
 140         .gpdcon = 0xaa90aaa1,
 141         .gpdcon_mask = 0xffc0fff0,
 142         .gpdup = 0x0000fcfd,
 143         .gpdup_mask = 0xffffffff,
 144
 145 };
 146
 147 static struct pwm_device *lcd_pwm;
 148
 149 void rx1950_lcd_power(int enable)
 150 {
 151         int i;
 152         static int enabled;
 153         if (enabled == enable)
 154                 return;
 155         if (!enable) {
 156
 157                 /* GPC11-GPC15->OUTPUT */
 158                 for (i = 11; i < 16; i++)
 159                         gpio_direction_output(S3C2410_GPC(i), 1);
 160
 161                 /* Wait a bit here... */
 162                 mdelay(100);
 163
 164                 /* GPD2-GPD7->OUTPUT */
 165                 /* GPD11-GPD15->OUTPUT */
 166                 /* GPD2-GPD7->1, GPD11-GPD15->1 */
 167                 for (i = 2; i < 8; i++)
 168                         gpio_direction_output(S3C2410_GPD(i), 1);
 169                 for (i = 11; i < 16; i++)
 170                         gpio_direction_output(S3C2410_GPD(i), 1);
 171
 172                 /* Wait a bit here...*/
 173                 mdelay(100);
 174
 175                 /* GPB0->OUTPUT, GPB0->0 */
 176                 gpio_direction_output(S3C2410_GPB(0), 0);
 177
 178                 /* GPC1-GPC4->OUTPUT, GPC1-4->0 */
 179                 for (i = 1; i < 5; i++)
 180                         gpio_direction_output(S3C2410_GPC(i), 0);
 181
 182                 /* GPC15-GPC11->0 */
 183                 for (i = 11; i < 16; i++)
 184                         gpio_direction_output(S3C2410_GPC(i), 0);
 185
 186                 /* GPD15-GPD11->0, GPD2->GPD7->0 */
 187                 for (i = 11; i < 16; i++)
 188                         gpio_direction_output(S3C2410_GPD(i), 0);
 189
 190                 for (i = 2; i < 8; i++)
 191                         gpio_direction_output(S3C2410_GPD(i), 0);
 192
 193                 /* GPC6->0, GPC7->0, GPC5->0 */
 194                 gpio_direction_output(S3C2410_GPC(6), 0);
 195                 gpio_direction_output(S3C2410_GPC(7), 0);
 196                 gpio_direction_output(S3C2410_GPC(5), 0);
 197
 198                 /* GPB1->OUTPUT, GPB1->0 */
 199                 gpio_direction_output(S3C2410_GPB(1), 0);
 200                 pwm_config(lcd_pwm, 0, LCD_PWM_PERIOD);
 201                 pwm_disable(lcd_pwm);
 202
 203                 /* GPC0->0, GPC10->0 */
 204                 gpio_direction_output(S3C2410_GPC(0), 0);
 205                 gpio_direction_output(S3C2410_GPC(10), 0);
 206         } else {
 207                 pwm_config(lcd_pwm, LCD_PWM_DUTY, LCD_PWM_PERIOD);
 208                 pwm_enable(lcd_pwm);
 209
 210                 gpio_direction_output(S3C2410_GPC(0), 1);
 211                 gpio_direction_output(S3C2410_GPC(5), 1);
 212
 213                 s3c_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPB1_TOUT1);
 214                 gpio_direction_output(S3C2410_GPC(7), 1);
 215
 216                 for (i = 1; i < 5; i++)
 217                         s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
 218
 219                 for (i = 11; i < 16; i++)
 220                         s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
 221
 222                 for (i = 2; i < 8; i++)
 223                         s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
 224
 225                 for (i = 11; i < 16; i++)
 226                         s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
 227
 228                 gpio_direction_output(S3C2410_GPC(10), 1);
 229                 gpio_direction_output(S3C2410_GPC(6), 1);
 230         }
 231         enabled = enable;
 232 }
 233
 234 static void rx1950_bl_power(int enable)
 235 {
 236         static int enabled;
 237         if (enabled == enable)
 238                 return;
 239         if (!enable) {
 240                         gpio_direction_output(S3C2410_GPB(0), 0);
 241         } else {
 242                         /* LED driver need a "push" to power on */
 243                         gpio_direction_output(S3C2410_GPB(0), 1);
 244                         /* Warm up backlight for one period of PWM.
 245                          * Without this trick its almost impossible to
 246                          * enable backlight with low brightness value
 247                          */
 248                         ndelay(48000);
 249                         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 250         }
 251         enabled = enable;
 252 }
 253
 254 static int rx1950_backlight_init(struct device *dev)
 255 {
 256         WARN_ON(gpio_request(S3C2410_GPB(0), "Backlight"));
 257         lcd_pwm = pwm_request(1, "RX1950 LCD");
 258         if (IS_ERR(lcd_pwm)) {
 259                 dev_err(dev, "Unable to request PWM for LCD power!\n");
 260                 return PTR_ERR(lcd_pwm);
 261         }
 262
 263         rx1950_lcd_power(1);
 264         rx1950_bl_power(1);
 265
 266         return 0;
 267 }
 268
 269 static void rx1950_backlight_exit(struct device *dev)
 270 {
 271         rx1950_bl_power(0);
 272         rx1950_lcd_power(0);
 273
 274         pwm_free(lcd_pwm);
 275         gpio_free(S3C2410_GPB(0));
 276 }
 277
 278
 279 static int rx1950_backlight_notify(struct device *dev, int brightness)
 280 {
 281         if (!brightness) {
 282                 rx1950_bl_power(0);
 283                 rx1950_lcd_power(0);
 284         } else {
 285                 rx1950_lcd_power(1);
 286                 rx1950_bl_power(1);
 287         }
 288         return brightness;
 289 }
 290
 291 static struct platform_pwm_backlight_data rx1950_backlight_data = {
 292         .pwm_id = 0,
 293         .max_brightness = 24,
 294         .dft_brightness = 4,
 295         .pwm_period_ns = 48000,
 296         .init = rx1950_backlight_init,
 297         .notify = rx1950_backlight_notify,
 298         .exit = rx1950_backlight_exit,
 299 };
 300
 301 static struct platform_device rx1950_backlight = {
 302         .name = "pwm-backlight",
 303         .dev = {
 304                 .parent = &s3c_device_timer[0].dev,
 305                 .platform_data = &rx1950_backlight_data,
 306         },
 307 };
 308
 309 static void rx1950_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 310 {
 311         switch (power_mode) {
 312         case MMC_POWER_OFF:
 313                 gpio_direction_output(S3C2410_GPJ(1), 0);
 314                 break;
 315         case MMC_POWER_UP:
 316         case MMC_POWER_ON:
 317                 gpio_direction_output(S3C2410_GPJ(1), 1);
 318                 break;
 319         default:
 320                 break;
 321         }
 322 }
 323
 324 static struct s3c24xx_mci_pdata rx1950_mmc_cfg __initdata = {
 325         .gpio_detect = S3C2410_GPF(5),
 326         .gpio_wprotect = S3C2410_GPH(8),
 327         .set_power = rx1950_set_mmc_power,
 328         .ocr_avail = MMC_VDD_32_33,
 329 };
 330
 331 static struct mtd_partition rx1950_nand_part[] = {
 332         [0] = {
 333                         .name = "Boot0",
 334                         .offset = 0,
 335                         .size = 0x4000,
 336                         .mask_flags = MTD_WRITEABLE,
 337         },
 338         [1] = {
 339                         .name = "Boot1",
 340                         .offset = MTDPART_OFS_APPEND,
 341                         .size = 0x40000,
 342                         .mask_flags = MTD_WRITEABLE,
 343         },
 344         [2] = {
 345                         .name = "Kernel",
 346                         .offset = MTDPART_OFS_APPEND,
 347                         .size = 0x300000,
 348                         .mask_flags = 0,
 349         },
 350         [3] = {
 351                         .name = "Filesystem",
 352                         .offset = MTDPART_OFS_APPEND,
 353                         .size = MTDPART_SIZ_FULL,
 354                         .mask_flags = 0,
 355         },
 356 };
 357
 358 static struct s3c2410_nand_set rx1950_nand_sets[] = {
 359         [0] = {
 360                         .name = "Internal",
 361                         .nr_chips = 1,
 362                         .nr_partitions = ARRAY_SIZE(rx1950_nand_part),
 363                         .partitions = rx1950_nand_part,
 364         },
 365 };
 366
 367 static struct s3c2410_platform_nand rx1950_nand_info = {
 368         .tacls = 25,
 369         .twrph0 = 50,
 370         .twrph1 = 15,
 371         .nr_sets = ARRAY_SIZE(rx1950_nand_sets),
 372         .sets = rx1950_nand_sets,
 373 };
 374
 375 static void rx1950_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 376 {
 377         switch (cmd) {
 378         case S3C2410_UDC_P_ENABLE:
 379                 gpio_direction_output(S3C2410_GPJ(5), 1);
 380                 break;
 381         case S3C2410_UDC_P_DISABLE:
 382                 gpio_direction_output(S3C2410_GPJ(5), 0);
 383                 break;
 384         case S3C2410_UDC_P_RESET:
 385                 break;
 386         default:
 387                 break;
 388         }
 389 }
 390
 391 static struct s3c2410_udc_mach_info rx1950_udc_cfg __initdata = {
 392         .udc_command = rx1950_udc_pullup,
 393         .vbus_pin = S3C2410_GPG(5),
 394         .vbus_pin_inverted = 1,
 395 };
 396
 397 static struct s3c2410_ts_mach_info rx1950_ts_cfg __initdata = {
 398         .delay = 10000,
 399         .presc = 49,
 400         .oversampling_shift = 3,
 401 };
 402
 403 static struct gpio_keys_button rx1950_gpio_keys_table[] = {
 404         {
 405                 .code           = KEY_POWER,
 406                 .gpio           = S3C2410_GPF(0),
 407                 .active_low     = 1,
 408                 .desc           = "Power button",
 409                 .wakeup         = 1,
 410         },
 411         {
 412                 .code           = KEY_F5,
 413                 .gpio           = S3C2410_GPF(7),
 414                 .active_low     = 1,
 415                 .desc           = "Record button",
 416         },
 417         {
 418                 .code           = KEY_F1,
 419                 .gpio           = S3C2410_GPG(0),
 420                 .active_low     = 1,
 421                 .desc           = "Calendar button",
 422         },
 423         {
 424                 .code           = KEY_F2,
 425                 .gpio           = S3C2410_GPG(2),
 426                 .active_low     = 1,
 427                 .desc           = "Contacts button",
 428         },
 429         {
 430                 .code           = KEY_F3,
 431                 .gpio           = S3C2410_GPG(3),
 432                 .active_low     = 1,
 433                 .desc           = "Mail button",
 434         },
 435         {
 436                 .code           = KEY_F4,
 437                 .gpio           = S3C2410_GPG(7),
 438                 .active_low     = 1,
 439                 .desc           = "WLAN button",
 440         },
 441         {
 442                 .code           = KEY_LEFT,
 443                 .gpio           = S3C2410_GPG(10),
 444                 .active_low     = 1,
 445                 .desc           = "Left button",
 446         },
 447         {
 448                 .code           = KEY_RIGHT,
 449                 .gpio           = S3C2410_GPG(11),
 450                 .active_low     = 1,
 451                 .desc           = "Right button",
 452         },
 453         {
 454                 .code           = KEY_UP,
 455                 .gpio           = S3C2410_GPG(4),
 456                 .active_low     = 1,
 457                 .desc           = "Up button",
 458         },
 459         {
 460                 .code           = KEY_DOWN,
 461                 .gpio           = S3C2410_GPG(6),
 462                 .active_low     = 1,
 463                 .desc           = "Down button",
 464         },
 465         {
 466                 .code           = KEY_ENTER,
 467                 .gpio           = S3C2410_GPG(9),
 468                 .active_low     = 1,
 469                 .desc           = "Ok button"
 470         },
 471 };
 472
 473 static struct gpio_keys_platform_data rx1950_gpio_keys_data = {
 474         .buttons = rx1950_gpio_keys_table,
 475         .nbuttons = ARRAY_SIZE(rx1950_gpio_keys_table),
 476 };
 477
 478 static struct platform_device rx1950_device_gpiokeys = {
 479         .name = "gpio-keys",
 480         .dev.platform_data = &rx1950_gpio_keys_data,
 481 };
 482
 483 static struct s3c2410_platform_i2c rx1950_i2c_data = {
 484         .flags = 0,
 485         .slave_addr = 0x42,
 486         .frequency = 400 * 1000,
 487         .sda_delay = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
 488 };
 489
 490 static struct platform_device *rx1950_devices[] __initdata = {
 491         &s3c_device_lcd,
 492         &s3c_device_wdt,
 493         &s3c_device_i2c0,
 494         &s3c_device_iis,
 495         &s3c_device_usbgadget,
 496         &s3c_device_rtc,
 497         &s3c_device_nand,
 498         &s3c_device_sdi,
 499         &s3c_device_adc,
 500         &s3c_device_ts,
 501         &s3c_device_timer[0],
 502         &s3c_device_timer[1],
 503         &rx1950_backlight,
 504         &rx1950_device_gpiokeys,
 505 };
 506
 507 static struct clk *rx1950_clocks[] __initdata = {
 508         &s3c24xx_clkout0,
 509         &s3c24xx_clkout1,
 510 };
 511
 512 static void __init rx1950_map_io(void)
 513 {
 514         s3c24xx_clkout0.parent  = &clk_h;
 515         s3c24xx_clkout1.parent  = &clk_f;
 516
 517         s3c24xx_register_clocks(rx1950_clocks, ARRAY_SIZE(rx1950_clocks));
 518
 519         s3c24xx_init_io(rx1950_iodesc, ARRAY_SIZE(rx1950_iodesc));
 520         s3c24xx_init_clocks(16934000);
 521         s3c24xx_init_uarts(rx1950_uartcfgs, ARRAY_SIZE(rx1950_uartcfgs));
 522
 523         /* setup PM */
 524
 525 #ifdef CONFIG_PM_H1940
 526         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 8);
 527 #endif
 528
 529         s3c_pm_init();
 530 }
 531
 532 static void __init rx1950_init_machine(void)
 533 {
 534         int i;
 535
 536         s3c24xx_fb_set_platdata(&rx1950_lcd_cfg);
 537         s3c24xx_udc_set_platdata(&rx1950_udc_cfg);
 538         s3c24xx_ts_set_platdata(&rx1950_ts_cfg);
 539         s3c24xx_mci_set_platdata(&rx1950_mmc_cfg);
 540         s3c_i2c0_set_platdata(&rx1950_i2c_data);
 541         s3c_nand_set_platdata(&rx1950_nand_info);
 542
 543         /* Turn off suspend on both USB ports, and switch the
 544          * selectable USB port to USB device mode. */
 545         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 546                                                 S3C2410_MISCCR_USBSUSPND0 |
 547                                                 S3C2410_MISCCR_USBSUSPND1, 0x0);
 548
 549         WARN_ON(gpio_request(S3C2410_GPJ(5), "UDC pullup"));
 550         gpio_direction_output(S3C2410_GPJ(5), 0);
 551
 552         /* mmc power is disabled by default */
 553         WARN_ON(gpio_request(S3C2410_GPJ(1), "MMC power"));
 554         gpio_direction_output(S3C2410_GPJ(1), 0);
 555
 556         for (i = 0; i < 8; i++)
 557                 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
 558
 559         for (i = 10; i < 16; i++)
 560                 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
 561
 562         for (i = 2; i < 8; i++)
 563                 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
 564
 565         for (i = 11; i < 16; i++)
 566                 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
 567
 568         WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power"));
 569
 570         platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
 571 }
 572
 573 MACHINE_START(RX1950, "HP iPAQ RX1950")
 574     /* Maintainers: Vasily Khoruzhick */
 575     .phys_io = S3C2410_PA_UART,
 576         .io_pg_offst = (((u32) S3C24XX_VA_UART) >> 18) & 0xfffc,
 577         .boot_params = S3C2410_SDRAM_PA + 0x100,
 578         .map_io = rx1950_map_io,
 579         .init_irq = s3c24xx_init_irq,
 580         .init_machine = rx1950_init_machine,
 581         .timer = &s3c24xx_timer,
 582 MACHINE_END