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