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