arch/arm/mach-pxa/pcm990-baseboard.c

   1 /*
   2  *  arch/arm/mach-pxa/pcm990-baseboard.c
   3  *  Support for the Phytec phyCORE-PXA270 Development Platform (PCM-990).
   4  *
   5  *  Refer
   6  *   http://www.phytec.com/products/rdk/ARM-XScale/phyCORE-XScale-PXA270.html
   7  *  for additional hardware info
   8  *
   9  *  Author:     Juergen Kilb
  10  *  Created:    April 05, 2005
  11  *  Copyright:  Phytec Messtechnik GmbH
  12  *  e-Mail:     armlinux@phytec.de
  13  *
  14  *  based on Intel Mainstone Board
  15  *
  16  *  Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
  17  *
  18  *  This program is free software; you can redistribute it and/or modify
  19  *  it under the terms of the GNU General Public License version 2 as
  20  *  published by the Free Software Foundation.
  21  */
  22 #include <linux/gpio.h>
  23 #include <linux/irq.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/i2c.h>
  26 #include <linux/i2c/pxa-i2c.h>
  27 #include <linux/pwm.h>
  28 #include <linux/pwm_backlight.h>
  29
  30 #include <media/mt9v022.h>
  31 #include <media/soc_camera.h>
  32
  33 #include <linux/platform_data/camera-pxa.h>
  34 #include <asm/mach/map.h>
  35 #include <mach/pxa27x.h>
  36 #include <mach/audio.h>
  37 #include <linux/platform_data/mmc-pxamci.h>
  38 #include <linux/platform_data/usb-ohci-pxa27x.h>
  39 #include <mach/pcm990_baseboard.h>
  40 #include <linux/platform_data/video-pxafb.h>
  41
  42 #include "devices.h"
  43 #include "generic.h"
  44
  45 static unsigned long pcm990_pin_config[] __initdata = {
  46         /* MMC */
  47         GPIO32_MMC_CLK,
  48         GPIO112_MMC_CMD,
  49         GPIO92_MMC_DAT_0,
  50         GPIO109_MMC_DAT_1,
  51         GPIO110_MMC_DAT_2,
  52         GPIO111_MMC_DAT_3,
  53         /* USB */
  54         GPIO88_USBH1_PWR,
  55         GPIO89_USBH1_PEN,
  56         /* PWM0 */
  57         GPIO16_PWM0_OUT,
  58
  59         /* I2C */
  60         GPIO117_I2C_SCL,
  61         GPIO118_I2C_SDA,
  62
  63         /* AC97 */
  64         GPIO28_AC97_BITCLK,
  65         GPIO29_AC97_SDATA_IN_0,
  66         GPIO30_AC97_SDATA_OUT,
  67         GPIO31_AC97_SYNC,
  68 };
  69
  70 static void __iomem *pcm990_cpld_base;
  71
  72 static u8 pcm990_cpld_readb(unsigned int reg)
  73 {
  74         return readb(pcm990_cpld_base + reg);
  75 }
  76
  77 static void pcm990_cpld_writeb(u8 value, unsigned int reg)
  78 {
  79         writeb(value, pcm990_cpld_base + reg);
  80 }
  81
  82 /*
  83  * pcm990_lcd_power - control power supply to the LCD
  84  * @on: 0 = switch off, 1 = switch on
  85  *
  86  * Called by the pxafb driver
  87  */
  88 #ifndef CONFIG_PCM990_DISPLAY_NONE
  89 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  90 {
  91         if (on) {
  92                 /* enable LCD-Latches
  93                  * power on LCD
  94                  */
  95                 pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON,
  96                                 PCM990_CTRL_REG3);
  97         } else {
  98                 /* disable LCD-Latches
  99                  * power off LCD
 100                  */
 101                 pcm990_cpld_writeb(0, PCM990_CTRL_REG3);
 102         }
 103 }
 104 #endif
 105
 106 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
 107 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
 108         .pixclock               = 28000,
 109         .xres                   = 640,
 110         .yres                   = 480,
 111         .bpp                    = 16,
 112         .hsync_len              = 20,
 113         .left_margin            = 103,
 114         .right_margin           = 47,
 115         .vsync_len              = 6,
 116         .upper_margin           = 28,
 117         .lower_margin           = 5,
 118         .sync                   = 0,
 119         .cmap_greyscale         = 0,
 120 };
 121
 122 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 123         .modes                  = &fb_info_sharp_lq084v1dg21,
 124         .num_modes              = 1,
 125         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 126         .pxafb_lcd_power        = pcm990_lcd_power,
 127 };
 128 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 129 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 130         .pixclock               = 39720,
 131         .xres                   = 640,
 132         .yres                   = 480,
 133         .bpp                    = 16,
 134         .hsync_len              = 32,
 135         .left_margin            = 16,
 136         .right_margin           = 48,
 137         .vsync_len              = 2,
 138         .upper_margin           = 12,
 139         .lower_margin           = 17,
 140         .sync                   = 0,
 141         .cmap_greyscale         = 0,
 142 };
 143
 144 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 145         .modes                  = &fb_info_nec_nl6448bc20_18d,
 146         .num_modes              = 1,
 147         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 148         .pxafb_lcd_power        = pcm990_lcd_power,
 149 };
 150 #endif
 151
 152 static struct pwm_lookup pcm990_pwm_lookup[] = {
 153         PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78770,
 154                    PWM_POLARITY_NORMAL),
 155 };
 156
 157 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 158         .max_brightness = 1023,
 159         .dft_brightness = 1023,
 160         .enable_gpio    = -1,
 161 };
 162
 163 static struct platform_device pcm990_backlight_device = {
 164         .name           = "pwm-backlight",
 165         .dev            = {
 166                 .parent = &pxa27x_device_pwm0.dev,
 167                 .platform_data = &pcm990_backlight_data,
 168         },
 169 };
 170
 171 /*
 172  * The PCM-990 development baseboard uses PCM-027's hardware in the
 173  * following way:
 174  *
 175  * - LCD support is in use
 176  *  - GPIO16 is output for back light on/off with PWM
 177  *  - GPIO58 ... GPIO73 are outputs for display data
 178  *  - GPIO74 is output output for LCDFCLK
 179  *  - GPIO75 is output for LCDLCLK
 180  *  - GPIO76 is output for LCDPCLK
 181  *  - GPIO77 is output for LCDBIAS
 182  * - MMC support is in use
 183  *  - GPIO32 is output for MMCCLK
 184  *  - GPIO92 is MMDAT0
 185  *  - GPIO109 is MMDAT1
 186  *  - GPIO110 is MMCS0
 187  *  - GPIO111 is MMCS1
 188  *  - GPIO112 is MMCMD
 189  * - IDE/CF card is in use
 190  *  - GPIO48 is output /POE
 191  *  - GPIO49 is output /PWE
 192  *  - GPIO50 is output /PIOR
 193  *  - GPIO51 is output /PIOW
 194  *  - GPIO54 is output /PCE2
 195  *  - GPIO55 is output /PREG
 196  *  - GPIO56 is input /PWAIT
 197  *  - GPIO57 is output /PIOS16
 198  *  - GPIO79 is output PSKTSEL
 199  *  - GPIO85 is output /PCE1
 200  * - FFUART is in use
 201  *  - GPIO34 is input FFRXD
 202  *  - GPIO35 is input FFCTS
 203  *  - GPIO36 is input FFDCD
 204  *  - GPIO37 is input FFDSR
 205  *  - GPIO38 is input FFRI
 206  *  - GPIO39 is output FFTXD
 207  *  - GPIO40 is output FFDTR
 208  *  - GPIO41 is output FFRTS
 209  * - BTUART is in use
 210  *  - GPIO42 is input BTRXD
 211  *  - GPIO43 is output BTTXD
 212  *  - GPIO44 is input BTCTS
 213  *  - GPIO45 is output BTRTS
 214  * - IRUART is in use
 215  *  - GPIO46 is input STDRXD
 216  *  - GPIO47 is output STDTXD
 217  * - AC97 is in use*)
 218  *  - GPIO28 is input AC97CLK
 219  *  - GPIO29 is input AC97DatIn
 220  *  - GPIO30 is output AC97DatO
 221  *  - GPIO31 is output AC97SYNC
 222  *  - GPIO113 is output AC97_RESET
 223  * - SSP is in use
 224  *  - GPIO23 is output SSPSCLK
 225  *  - GPIO24 is output chip select to Max7301
 226  *  - GPIO25 is output SSPTXD
 227  *  - GPIO26 is input SSPRXD
 228  *  - GPIO27 is input for Max7301 IRQ
 229  *  - GPIO53 is input SSPSYSCLK
 230  * - SSP3 is in use
 231  *  - GPIO81 is output SSPTXD3
 232  *  - GPIO82 is input SSPRXD3
 233  *  - GPIO83 is output SSPSFRM
 234  *  - GPIO84 is output SSPCLK3
 235  *
 236  * Otherwise claimed GPIOs:
 237  * GPIO1 -> IRQ from user switch
 238  * GPIO9 -> IRQ from power management
 239  * GPIO10 -> IRQ from WML9712 AC97 controller
 240  * GPIO11 -> IRQ from IDE controller
 241  * GPIO12 -> IRQ from CF controller
 242  * GPIO13 -> IRQ from CF controller
 243  * GPIO14 -> GPIO free
 244  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 245  * GPIO19 -> GPIO free
 246  * GPIO20 -> /SDCS2
 247  * GPIO21 -> /CS3 PC card socket select
 248  * GPIO33 -> /CS5  network controller select
 249  * GPIO78 -> /CS2  (16 bit wide data path)
 250  * GPIO80 -> /CS4  (16 bit wide data path)
 251  * GPIO86 -> GPIO free
 252  * GPIO87 -> GPIO free
 253  * GPIO90 -> LED0 on CPU module
 254  * GPIO91 -> LED1 on CPI module
 255  * GPIO117 -> SCL
 256  * GPIO118 -> SDA
 257  */
 258
 259 static unsigned long pcm990_irq_enabled;
 260
 261 static void pcm990_mask_ack_irq(struct irq_data *d)
 262 {
 263         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 264
 265         pcm990_irq_enabled &= ~(1 << pcm990_irq);
 266
 267         pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 268 }
 269
 270 static void pcm990_unmask_irq(struct irq_data *d)
 271 {
 272         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 273         u8 val;
 274
 275         /* the irq can be acknowledged only if deasserted, so it's done here */
 276
 277         pcm990_irq_enabled |= (1 << pcm990_irq);
 278
 279         val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 280         val |= 1 << pcm990_irq;
 281         pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR);
 282
 283         pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 284 }
 285
 286 static struct irq_chip pcm990_irq_chip = {
 287         .irq_mask_ack   = pcm990_mask_ack_irq,
 288         .irq_unmask     = pcm990_unmask_irq,
 289 };
 290
 291 static void pcm990_irq_handler(struct irq_desc *desc)
 292 {
 293         unsigned int irq;
 294         unsigned long pending;
 295
 296         pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 297         pending &= pcm990_irq_enabled;
 298
 299         do {
 300                 /* clear our parent IRQ */
 301                 desc->irq_data.chip->irq_ack(&desc->irq_data);
 302                 if (likely(pending)) {
 303                         irq = PCM027_IRQ(0) + __ffs(pending);
 304                         generic_handle_irq(irq);
 305                 }
 306                 pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 307                 pending &= pcm990_irq_enabled;
 308         } while (pending);
 309 }
 310
 311 static void __init pcm990_init_irq(void)
 312 {
 313         int irq;
 314
 315         /* setup extra PCM990 irqs */
 316         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 317                 irq_set_chip_and_handler(irq, &pcm990_irq_chip,
 318                                          handle_level_irq);
 319                 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 320         }
 321
 322         /* disable all Interrupts */
 323         pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA);
 324         pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR);
 325
 326         irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 327         irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 328 }
 329
 330 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 331                         void *data)
 332 {
 333         int err;
 334
 335         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0,
 336                              "MMC card detect", data);
 337         if (err)
 338                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 339                                 "card detect IRQ\n");
 340
 341         return err;
 342 }
 343
 344 static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 345 {
 346         struct pxamci_platform_data *p_d = dev->platform_data;
 347         u8 val;
 348
 349         val = pcm990_cpld_readb(PCM990_CTRL_REG5);
 350
 351         if ((1 << vdd) & p_d->ocr_mask)
 352                 val |= PCM990_CTRL_MMC2PWR;
 353         else
 354                 val &= ~PCM990_CTRL_MMC2PWR;
 355
 356         pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
 357         return 0;
 358 }
 359
 360 static void pcm990_mci_exit(struct device *dev, void *data)
 361 {
 362         free_irq(PCM027_MMCDET_IRQ, data);
 363 }
 364
 365 #define MSECS_PER_JIFFY (1000/HZ)
 366
 367 static struct pxamci_platform_data pcm990_mci_platform_data = {
 368         .detect_delay_ms        = 250,
 369         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 370         .init                   = pcm990_mci_init,
 371         .setpower               = pcm990_mci_setpower,
 372         .exit                   = pcm990_mci_exit,
 373         .gpio_card_detect       = -1,
 374         .gpio_card_ro           = -1,
 375         .gpio_power             = -1,
 376 };
 377
 378 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 379         .port_mode      = PMM_PERPORT_MODE,
 380         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 381         .power_on_delay = 10,
 382 };
 383
 384 /*
 385  * PXA27x Camera specific stuff
 386  */
 387 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 388 static unsigned long pcm990_camera_pin_config[] = {
 389         /* CIF */
 390         GPIO98_CIF_DD_0,
 391         GPIO105_CIF_DD_1,
 392         GPIO104_CIF_DD_2,
 393         GPIO103_CIF_DD_3,
 394         GPIO95_CIF_DD_4,
 395         GPIO94_CIF_DD_5,
 396         GPIO93_CIF_DD_6,
 397         GPIO108_CIF_DD_7,
 398         GPIO107_CIF_DD_8,
 399         GPIO106_CIF_DD_9,
 400         GPIO42_CIF_MCLK,
 401         GPIO45_CIF_PCLK,
 402         GPIO43_CIF_FV,
 403         GPIO44_CIF_LV,
 404 };
 405
 406 /*
 407  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 408  *      MCLK_EN:        Master clock is generated by PXA
 409  *      PCP:            Data sampled on the falling edge of pixel clock
 410  */
 411 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 412         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 413                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 414         .mclk_10khz = 1000,
 415 };
 416
 417 #include <linux/platform_data/pca953x.h>
 418
 419 static struct pca953x_platform_data pca9536_data = {
 420         .gpio_base      = PXA_NR_BUILTIN_GPIO,
 421 };
 422
 423 static int gpio_bus_switch = -EINVAL;
 424
 425 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
 426                                        unsigned long flags)
 427 {
 428         if (gpio_bus_switch < 0) {
 429                 if (flags == SOCAM_DATAWIDTH_10)
 430                         return 0;
 431                 else
 432                         return -EINVAL;
 433         }
 434
 435         if (flags & SOCAM_DATAWIDTH_8)
 436                 gpio_set_value_cansleep(gpio_bus_switch, 1);
 437         else
 438                 gpio_set_value_cansleep(gpio_bus_switch, 0);
 439
 440         return 0;
 441 }
 442
 443 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
 444 {
 445         int ret;
 446
 447         if (gpio_bus_switch < 0) {
 448                 ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera");
 449                 if (!ret) {
 450                         gpio_bus_switch = PXA_NR_BUILTIN_GPIO;
 451                         gpio_direction_output(gpio_bus_switch, 0);
 452                 }
 453         }
 454
 455         if (gpio_bus_switch >= 0)
 456                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
 457         else
 458                 return SOCAM_DATAWIDTH_10;
 459 }
 460
 461 static void pcm990_camera_free_bus(struct soc_camera_link *link)
 462 {
 463         if (gpio_bus_switch < 0)
 464                 return;
 465
 466         gpio_free(gpio_bus_switch);
 467         gpio_bus_switch = -EINVAL;
 468 }
 469
 470 /* Board I2C devices. */
 471 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 472         {
 473                 /* Must initialize before the camera(s) */
 474                 I2C_BOARD_INFO("pca9536", 0x41),
 475                 .platform_data = &pca9536_data,
 476         },
 477 };
 478
 479 static struct mt9v022_platform_data mt9v022_pdata = {
 480         .y_skip_top = 1,
 481 };
 482
 483 static struct i2c_board_info pcm990_camera_i2c[] = {
 484         {
 485                 I2C_BOARD_INFO("mt9v022", 0x48),
 486         }, {
 487                 I2C_BOARD_INFO("mt9m001", 0x5d),
 488         },
 489 };
 490
 491 static struct soc_camera_link iclink[] = {
 492         {
 493                 .bus_id                 = 0, /* Must match with the camera ID */
 494                 .board_info             = &pcm990_camera_i2c[0],
 495                 .priv                   = &mt9v022_pdata,
 496                 .i2c_adapter_id         = 0,
 497                 .query_bus_param        = pcm990_camera_query_bus_param,
 498                 .set_bus_param          = pcm990_camera_set_bus_param,
 499                 .free_bus               = pcm990_camera_free_bus,
 500         }, {
 501                 .bus_id                 = 0, /* Must match with the camera ID */
 502                 .board_info             = &pcm990_camera_i2c[1],
 503                 .i2c_adapter_id         = 0,
 504                 .query_bus_param        = pcm990_camera_query_bus_param,
 505                 .set_bus_param          = pcm990_camera_set_bus_param,
 506                 .free_bus               = pcm990_camera_free_bus,
 507         },
 508 };
 509
 510 static struct platform_device pcm990_camera[] = {
 511         {
 512                 .name   = "soc-camera-pdrv",
 513                 .id     = 0,
 514                 .dev    = {
 515                         .platform_data = &iclink[0],
 516                 },
 517         }, {
 518                 .name   = "soc-camera-pdrv",
 519                 .id     = 1,
 520                 .dev    = {
 521                         .platform_data = &iclink[1],
 522                 },
 523         },
 524 };
 525 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 526
 527 /*
 528  * system init for baseboard usage. Will be called by pcm027 init.
 529  *
 530  * Add platform devices present on this baseboard and init
 531  * them from CPU side as far as required to use them later on
 532  */
 533 void __init pcm990_baseboard_init(void)
 534 {
 535         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 536
 537         pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE);
 538         if (!pcm990_cpld_base) {
 539                 pr_err("pcm990: failed to ioremap cpld\n");
 540                 return;
 541         }
 542
 543         /* register CPLD's IRQ controller */
 544         pcm990_init_irq();
 545
 546 #ifndef CONFIG_PCM990_DISPLAY_NONE
 547         pxa_set_fb_info(NULL, &pcm990_fbinfo);
 548 #endif
 549         pwm_add_table(pcm990_pwm_lookup, ARRAY_SIZE(pcm990_pwm_lookup));
 550         platform_device_register(&pcm990_backlight_device);
 551
 552         /* MMC */
 553         pxa_set_mci_info(&pcm990_mci_platform_data);
 554
 555         /* USB host */
 556         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 557
 558         pxa_set_i2c_info(NULL);
 559         pxa_set_ac97_info(NULL);
 560
 561 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 562         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 563         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 564
 565         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 566
 567         platform_device_register(&pcm990_camera[0]);
 568         platform_device_register(&pcm990_camera[1]);
 569 #endif
 570
 571         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 572 }