arch/arm/mach-pxa/corgi.c

   1 /*
   2  * Support for Sharp SL-C7xx PDAs
   3  * Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
   4  *
   5  * Copyright (c) 2004-2005 Richard Purdie
   6  *
   7  * Based on Sharp's 2.4 kernel patches/lubbock.c
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/major.h>
  19 #include <linux/fs.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/mmc/host.h>
  22 #include <linux/pm.h>
  23 #include <linux/backlight.h>
  24 #include <video/w100fb.h>
  25
  26 #include <asm/setup.h>
  27 #include <asm/memory.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/hardware.h>
  30 #include <asm/irq.h>
  31 #include <asm/io.h>
  32 #include <asm/system.h>
  33
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/mach/irq.h>
  37
  38 #include <asm/arch/pxa-regs.h>
  39 #include <asm/arch/pxa2xx-gpio.h>
  40 #include <asm/arch/irda.h>
  41 #include <asm/arch/mmc.h>
  42 #include <asm/arch/udc.h>
  43 #include <asm/arch/corgi.h>
  44 #include <asm/arch/sharpsl.h>
  45
  46 #include <asm/mach/sharpsl_param.h>
  47 #include <asm/hardware/scoop.h>
  48
  49 #include "generic.h"
  50 #include "devices.h"
  51 #include "sharpsl.h"
  52
  53
  54 /*
  55  * Corgi SCOOP Device
  56  */
  57 static struct resource corgi_scoop_resources[] = {
  58         [0] = {
  59                 .start          = 0x10800000,
  60                 .end            = 0x10800fff,
  61                 .flags          = IORESOURCE_MEM,
  62         },
  63 };
  64
  65 static struct scoop_config corgi_scoop_setup = {
  66         .io_dir         = CORGI_SCOOP_IO_DIR,
  67         .io_out         = CORGI_SCOOP_IO_OUT,
  68 };
  69
  70 struct platform_device corgiscoop_device = {
  71         .name           = "sharp-scoop",
  72         .id             = -1,
  73         .dev            = {
  74                 .platform_data  = &corgi_scoop_setup,
  75         },
  76         .num_resources  = ARRAY_SIZE(corgi_scoop_resources),
  77         .resource       = corgi_scoop_resources,
  78 };
  79
  80 static void corgi_pcmcia_init(void)
  81 {
  82         /* Setup default state of GPIO outputs
  83            before we enable them as outputs. */
  84         GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) |
  85                 GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) |
  86                 GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) |
  87                 GPIO_bit(GPIO53_nPCE_2);
  88
  89         pxa_gpio_mode(GPIO48_nPOE_MD);
  90         pxa_gpio_mode(GPIO49_nPWE_MD);
  91         pxa_gpio_mode(GPIO50_nPIOR_MD);
  92         pxa_gpio_mode(GPIO51_nPIOW_MD);
  93         pxa_gpio_mode(GPIO55_nPREG_MD);
  94         pxa_gpio_mode(GPIO56_nPWAIT_MD);
  95         pxa_gpio_mode(GPIO57_nIOIS16_MD);
  96         pxa_gpio_mode(GPIO52_nPCE_1_MD);
  97         pxa_gpio_mode(GPIO53_nPCE_2_MD);
  98         pxa_gpio_mode(GPIO54_pSKTSEL_MD);
  99 }
 100
 101 static struct scoop_pcmcia_dev corgi_pcmcia_scoop[] = {
 102 {
 103         .dev        = &corgiscoop_device.dev,
 104         .irq        = CORGI_IRQ_GPIO_CF_IRQ,
 105         .cd_irq     = CORGI_IRQ_GPIO_CF_CD,
 106         .cd_irq_str = "PCMCIA0 CD",
 107 },
 108 };
 109
 110 static struct scoop_pcmcia_config corgi_pcmcia_config = {
 111         .devs         = &corgi_pcmcia_scoop[0],
 112         .num_devs     = 1,
 113         .pcmcia_init  = corgi_pcmcia_init,
 114 };
 115
 116 EXPORT_SYMBOL(corgiscoop_device);
 117
 118
 119 /*
 120  * Corgi SSP Device
 121  *
 122  * Set the parent as the scoop device because a lot of SSP devices
 123  * also use scoop functions and this makes the power up/down order
 124  * work correctly.
 125  */
 126 struct platform_device corgissp_device = {
 127         .name           = "corgi-ssp",
 128         .dev            = {
 129                 .parent = &corgiscoop_device.dev,
 130         },
 131         .id             = -1,
 132 };
 133
 134 struct corgissp_machinfo corgi_ssp_machinfo = {
 135         .port           = 1,
 136         .cs_lcdcon      = CORGI_GPIO_LCDCON_CS,
 137         .cs_ads7846     = CORGI_GPIO_ADS7846_CS,
 138         .cs_max1111     = CORGI_GPIO_MAX1111_CS,
 139         .clk_lcdcon     = 76,
 140         .clk_ads7846    = 2,
 141         .clk_max1111    = 8,
 142 };
 143
 144
 145 /*
 146  * LCD/Framebuffer
 147  */
 148 static void w100_lcdtg_suspend(struct w100fb_par *par)
 149 {
 150         corgi_lcdtg_suspend();
 151 }
 152
 153 static void w100_lcdtg_init(struct w100fb_par *par)
 154 {
 155         corgi_lcdtg_hw_init(par->xres);
 156 }
 157
 158
 159 static struct w100_tg_info corgi_lcdtg_info = {
 160         .change  = w100_lcdtg_init,
 161         .suspend = w100_lcdtg_suspend,
 162         .resume  = w100_lcdtg_init,
 163 };
 164
 165 static struct w100_mem_info corgi_fb_mem = {
 166         .ext_cntl          = 0x00040003,
 167         .sdram_mode_reg    = 0x00650021,
 168         .ext_timing_cntl   = 0x10002a4a,
 169         .io_cntl           = 0x7ff87012,
 170         .size              = 0x1fffff,
 171 };
 172
 173 static struct w100_gen_regs corgi_fb_regs = {
 174         .lcd_format    = 0x00000003,
 175         .lcdd_cntl1    = 0x01CC0000,
 176         .lcdd_cntl2    = 0x0003FFFF,
 177         .genlcd_cntl1  = 0x00FFFF0D,
 178         .genlcd_cntl2  = 0x003F3003,
 179         .genlcd_cntl3  = 0x000102aa,
 180 };
 181
 182 static struct w100_gpio_regs corgi_fb_gpio = {
 183         .init_data1   = 0x000000bf,
 184         .init_data2   = 0x00000000,
 185         .gpio_dir1    = 0x00000000,
 186         .gpio_oe1     = 0x03c0feff,
 187         .gpio_dir2    = 0x00000000,
 188         .gpio_oe2     = 0x00000000,
 189 };
 190
 191 static struct w100_mode corgi_fb_modes[] = {
 192 {
 193         .xres            = 480,
 194         .yres            = 640,
 195         .left_margin     = 0x56,
 196         .right_margin    = 0x55,
 197         .upper_margin    = 0x03,
 198         .lower_margin    = 0x00,
 199         .crtc_ss         = 0x82360056,
 200         .crtc_ls         = 0xA0280000,
 201         .crtc_gs         = 0x80280028,
 202         .crtc_vpos_gs    = 0x02830002,
 203         .crtc_rev        = 0x00400008,
 204         .crtc_dclk       = 0xA0000000,
 205         .crtc_gclk       = 0x8015010F,
 206         .crtc_goe        = 0x80100110,
 207         .crtc_ps1_active = 0x41060010,
 208         .pll_freq        = 75,
 209         .fast_pll_freq   = 100,
 210         .sysclk_src      = CLK_SRC_PLL,
 211         .sysclk_divider  = 0,
 212         .pixclk_src      = CLK_SRC_PLL,
 213         .pixclk_divider  = 2,
 214         .pixclk_divider_rotated = 6,
 215 },{
 216         .xres            = 240,
 217         .yres            = 320,
 218         .left_margin     = 0x27,
 219         .right_margin    = 0x2e,
 220         .upper_margin    = 0x01,
 221         .lower_margin    = 0x00,
 222         .crtc_ss         = 0x81170027,
 223         .crtc_ls         = 0xA0140000,
 224         .crtc_gs         = 0xC0140014,
 225         .crtc_vpos_gs    = 0x00010141,
 226         .crtc_rev        = 0x00400008,
 227         .crtc_dclk       = 0xA0000000,
 228         .crtc_gclk       = 0x8015010F,
 229         .crtc_goe        = 0x80100110,
 230         .crtc_ps1_active = 0x41060010,
 231         .pll_freq        = 0,
 232         .fast_pll_freq   = 0,
 233         .sysclk_src      = CLK_SRC_XTAL,
 234         .sysclk_divider  = 0,
 235         .pixclk_src      = CLK_SRC_XTAL,
 236         .pixclk_divider  = 1,
 237         .pixclk_divider_rotated = 1,
 238 },
 239
 240 };
 241
 242 static struct w100fb_mach_info corgi_fb_info = {
 243         .tg         = &corgi_lcdtg_info,
 244         .init_mode  = INIT_MODE_ROTATED,
 245         .mem        = &corgi_fb_mem,
 246         .regs       = &corgi_fb_regs,
 247         .modelist   = &corgi_fb_modes[0],
 248         .num_modes  = 2,
 249         .gpio       = &corgi_fb_gpio,
 250         .xtal_freq  = 12500000,
 251         .xtal_dbl   = 0,
 252 };
 253
 254 static struct resource corgi_fb_resources[] = {
 255         [0] = {
 256                 .start   = 0x08000000,
 257                 .end     = 0x08ffffff,
 258                 .flags   = IORESOURCE_MEM,
 259         },
 260 };
 261
 262 static struct platform_device corgifb_device = {
 263         .name           = "w100fb",
 264         .id             = -1,
 265         .num_resources  = ARRAY_SIZE(corgi_fb_resources),
 266         .resource       = corgi_fb_resources,
 267         .dev            = {
 268                 .platform_data = &corgi_fb_info,
 269                 .parent = &corgissp_device.dev,
 270         },
 271
 272 };
 273
 274
 275 /*
 276  * Corgi Backlight Device
 277  */
 278 static void corgi_bl_kick_battery(void)
 279 {
 280         void (*kick_batt)(void);
 281
 282         kick_batt = symbol_get(sharpsl_battery_kick);
 283         if (kick_batt) {
 284                 kick_batt();
 285                 symbol_put(sharpsl_battery_kick);
 286         }
 287 }
 288
 289 static void corgi_bl_set_intensity(int intensity)
 290 {
 291         if (intensity > 0x10)
 292                 intensity += 0x10;
 293
 294         /* Bits 0-4 are accessed via the SSP interface */
 295         corgi_ssp_blduty_set(intensity & 0x1f);
 296
 297         /* Bit 5 is via SCOOP */
 298         if (intensity & 0x0020)
 299                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT);
 300         else
 301                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT);
 302 }
 303
 304 static struct generic_bl_info corgi_bl_machinfo = {
 305         .name = "corgi-bl",
 306         .max_intensity = 0x2f,
 307         .default_intensity = 0x1f,
 308         .limit_mask = 0x0b,
 309         .set_bl_intensity = corgi_bl_set_intensity,
 310         .kick_battery = corgi_bl_kick_battery,
 311 };
 312
 313 static struct platform_device corgibl_device = {
 314         .name           = "generic-bl",
 315         .dev            = {
 316                 .parent = &corgifb_device.dev,
 317                 .platform_data  = &corgi_bl_machinfo,
 318         },
 319         .id             = -1,
 320 };
 321
 322
 323 /*
 324  * Corgi Keyboard Device
 325  */
 326 static struct platform_device corgikbd_device = {
 327         .name           = "corgi-keyboard",
 328         .id             = -1,
 329 };
 330
 331
 332 /*
 333  * Corgi LEDs
 334  */
 335 static struct platform_device corgiled_device = {
 336         .name           = "corgi-led",
 337         .id             = -1,
 338 };
 339
 340
 341 /*
 342  * Corgi Touch Screen Device
 343  */
 344 static unsigned long (*get_hsync_invperiod)(struct device *dev);
 345
 346 static void inline sharpsl_wait_sync(int gpio)
 347 {
 348         while((GPLR(gpio) & GPIO_bit(gpio)) == 0);
 349         while((GPLR(gpio) & GPIO_bit(gpio)) != 0);
 350 }
 351
 352 static unsigned long corgi_get_hsync_invperiod(void)
 353 {
 354         if (!get_hsync_invperiod)
 355                 get_hsync_invperiod = symbol_get(w100fb_get_hsynclen);
 356         if (!get_hsync_invperiod)
 357                 return 0;
 358
 359         return get_hsync_invperiod(&corgifb_device.dev);
 360 }
 361
 362 static void corgi_put_hsync(void)
 363 {
 364         if (get_hsync_invperiod)
 365                 symbol_put(w100fb_get_hsynclen);
 366         get_hsync_invperiod = NULL;
 367 }
 368
 369 static void corgi_wait_hsync(void)
 370 {
 371         sharpsl_wait_sync(CORGI_GPIO_HSYNC);
 372 }
 373
 374 static struct resource corgits_resources[] = {
 375         [0] = {
 376                 .start          = CORGI_IRQ_GPIO_TP_INT,
 377                 .end            = CORGI_IRQ_GPIO_TP_INT,
 378                 .flags          = IORESOURCE_IRQ,
 379         },
 380 };
 381
 382 static struct corgits_machinfo  corgi_ts_machinfo = {
 383         .get_hsync_invperiod = corgi_get_hsync_invperiod,
 384         .put_hsync           = corgi_put_hsync,
 385         .wait_hsync          = corgi_wait_hsync,
 386 };
 387
 388 static struct platform_device corgits_device = {
 389         .name           = "corgi-ts",
 390         .dev            = {
 391                 .parent = &corgissp_device.dev,
 392                 .platform_data  = &corgi_ts_machinfo,
 393         },
 394         .id             = -1,
 395         .num_resources  = ARRAY_SIZE(corgits_resources),
 396         .resource       = corgits_resources,
 397 };
 398
 399
 400 /*
 401  * MMC/SD Device
 402  *
 403  * The card detect interrupt isn't debounced so we delay it by 250ms
 404  * to give the card a chance to fully insert/eject.
 405  */
 406 static struct pxamci_platform_data corgi_mci_platform_data;
 407
 408 static int corgi_mci_init(struct device *dev, irq_handler_t corgi_detect_int, void *data)
 409 {
 410         int err;
 411
 412         /* setup GPIO for PXA25x MMC controller */
 413         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 414         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 415         pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
 416         pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);
 417
 418         corgi_mci_platform_data.detect_delay = msecs_to_jiffies(250);
 419
 420         err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_detect_int,
 421                           IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 422                           "MMC card detect", data);
 423         if (err)
 424                 printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 425
 426         return err;
 427 }
 428
 429 static void corgi_mci_setpower(struct device *dev, unsigned int vdd)
 430 {
 431         struct pxamci_platform_data* p_d = dev->platform_data;
 432
 433         if (( 1 << vdd) & p_d->ocr_mask)
 434                 GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
 435         else
 436                 GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
 437 }
 438
 439 static int corgi_mci_get_ro(struct device *dev)
 440 {
 441         return GPLR(CORGI_GPIO_nSD_WP) & GPIO_bit(CORGI_GPIO_nSD_WP);
 442 }
 443
 444 static void corgi_mci_exit(struct device *dev, void *data)
 445 {
 446         free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
 447 }
 448
 449 static struct pxamci_platform_data corgi_mci_platform_data = {
 450         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 451         .init           = corgi_mci_init,
 452         .get_ro         = corgi_mci_get_ro,
 453         .setpower       = corgi_mci_setpower,
 454         .exit           = corgi_mci_exit,
 455 };
 456
 457
 458 /*
 459  * Irda
 460  */
 461 static void corgi_irda_transceiver_mode(struct device *dev, int mode)
 462 {
 463         if (mode & IR_OFF)
 464                 GPSR(CORGI_GPIO_IR_ON) = GPIO_bit(CORGI_GPIO_IR_ON);
 465         else
 466                 GPCR(CORGI_GPIO_IR_ON) = GPIO_bit(CORGI_GPIO_IR_ON);
 467 }
 468
 469 static struct pxaficp_platform_data corgi_ficp_platform_data = {
 470         .transceiver_cap  = IR_SIRMODE | IR_OFF,
 471         .transceiver_mode = corgi_irda_transceiver_mode,
 472 };
 473
 474
 475 /*
 476  * USB Device Controller
 477  */
 478 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 479         /* no connect GPIO; corgi can't tell connection status */
 480         .gpio_pullup            = CORGI_GPIO_USB_PULLUP,
 481 };
 482
 483
 484 static struct platform_device *devices[] __initdata = {
 485         &corgiscoop_device,
 486         &corgissp_device,
 487         &corgifb_device,
 488         &corgikbd_device,
 489         &corgibl_device,
 490         &corgits_device,
 491         &corgiled_device,
 492 };
 493
 494 static void corgi_poweroff(void)
 495 {
 496         if (!machine_is_corgi())
 497                 /* Green LED off tells the bootloader to halt */
 498                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
 499         arm_machine_restart('h');
 500 }
 501
 502 static void corgi_restart(char mode)
 503 {
 504         if (!machine_is_corgi())
 505                 /* Green LED on tells the bootloader to reboot */
 506                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
 507         arm_machine_restart('h');
 508 }
 509
 510 static void __init corgi_init(void)
 511 {
 512         pm_power_off = corgi_poweroff;
 513         arm_pm_restart = corgi_restart;
 514
 515         /* setup sleep mode values */
 516         PWER  = 0x00000002;
 517         PFER  = 0x00000000;
 518         PRER  = 0x00000002;
 519         PGSR0 = 0x0158C000;
 520         PGSR1 = 0x00FF0080;
 521         PGSR2 = 0x0001C004;
 522         /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
 523         PCFR |= PCFR_OPDE;
 524
 525         corgi_ssp_set_machinfo(&corgi_ssp_machinfo);
 526
 527         pxa_gpio_mode(CORGI_GPIO_IR_ON | GPIO_OUT);
 528         pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);
 529
 530         pxa_set_udc_info(&udc_info);
 531         pxa_set_mci_info(&corgi_mci_platform_data);
 532         pxa_set_ficp_info(&corgi_ficp_platform_data);
 533
 534         platform_scoop_config = &corgi_pcmcia_config;
 535
 536         platform_add_devices(devices, ARRAY_SIZE(devices));
 537 }
 538
 539 static void __init fixup_corgi(struct machine_desc *desc,
 540                 struct tag *tags, char **cmdline, struct meminfo *mi)
 541 {
 542         sharpsl_save_param();
 543         mi->nr_banks=1;
 544         mi->bank[0].start = 0xa0000000;
 545         mi->bank[0].node = 0;
 546         if (machine_is_corgi())
 547                 mi->bank[0].size = (32*1024*1024);
 548         else
 549                 mi->bank[0].size = (64*1024*1024);
 550 }
 551
 552 #ifdef CONFIG_MACH_CORGI
 553 MACHINE_START(CORGI, "SHARP Corgi")
 554         .phys_io        = 0x40000000,
 555         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 556         .fixup          = fixup_corgi,
 557         .map_io         = pxa_map_io,
 558         .init_irq       = pxa25x_init_irq,
 559         .init_machine   = corgi_init,
 560         .timer          = &pxa_timer,
 561 MACHINE_END
 562 #endif
 563
 564 #ifdef CONFIG_MACH_SHEPHERD
 565 MACHINE_START(SHEPHERD, "SHARP Shepherd")
 566         .phys_io        = 0x40000000,
 567         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 568         .fixup          = fixup_corgi,
 569         .map_io         = pxa_map_io,
 570         .init_irq       = pxa25x_init_irq,
 571         .init_machine   = corgi_init,
 572         .timer          = &pxa_timer,
 573 MACHINE_END
 574 #endif
 575
 576 #ifdef CONFIG_MACH_HUSKY
 577 MACHINE_START(HUSKY, "SHARP Husky")
 578         .phys_io        = 0x40000000,
 579         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 580         .fixup          = fixup_corgi,
 581         .map_io         = pxa_map_io,
 582         .init_irq       = pxa25x_init_irq,
 583         .init_machine   = corgi_init,
 584         .timer          = &pxa_timer,
 585 MACHINE_END
 586 #endif
 587