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         .enable_gpio    = -1,
 157 };
 158
 159 static struct platform_device pcm990_backlight_device = {
 160         .name           = "pwm-backlight",
 161         .dev            = {
 162                 .parent = &pxa27x_device_pwm0.dev,
 163                 .platform_data = &pcm990_backlight_data,
 164         },
 165 };
 166
 167 /*
 168  * The PCM-990 development baseboard uses PCM-027's hardware in the
 169  * following way:
 170  *
 171  * - LCD support is in use
 172  *  - GPIO16 is output for back light on/off with PWM
 173  *  - GPIO58 ... GPIO73 are outputs for display data
 174  *  - GPIO74 is output output for LCDFCLK
 175  *  - GPIO75 is output for LCDLCLK
 176  *  - GPIO76 is output for LCDPCLK
 177  *  - GPIO77 is output for LCDBIAS
 178  * - MMC support is in use
 179  *  - GPIO32 is output for MMCCLK
 180  *  - GPIO92 is MMDAT0
 181  *  - GPIO109 is MMDAT1
 182  *  - GPIO110 is MMCS0
 183  *  - GPIO111 is MMCS1
 184  *  - GPIO112 is MMCMD
 185  * - IDE/CF card is in use
 186  *  - GPIO48 is output /POE
 187  *  - GPIO49 is output /PWE
 188  *  - GPIO50 is output /PIOR
 189  *  - GPIO51 is output /PIOW
 190  *  - GPIO54 is output /PCE2
 191  *  - GPIO55 is output /PREG
 192  *  - GPIO56 is input /PWAIT
 193  *  - GPIO57 is output /PIOS16
 194  *  - GPIO79 is output PSKTSEL
 195  *  - GPIO85 is output /PCE1
 196  * - FFUART is in use
 197  *  - GPIO34 is input FFRXD
 198  *  - GPIO35 is input FFCTS
 199  *  - GPIO36 is input FFDCD
 200  *  - GPIO37 is input FFDSR
 201  *  - GPIO38 is input FFRI
 202  *  - GPIO39 is output FFTXD
 203  *  - GPIO40 is output FFDTR
 204  *  - GPIO41 is output FFRTS
 205  * - BTUART is in use
 206  *  - GPIO42 is input BTRXD
 207  *  - GPIO43 is output BTTXD
 208  *  - GPIO44 is input BTCTS
 209  *  - GPIO45 is output BTRTS
 210  * - IRUART is in use
 211  *  - GPIO46 is input STDRXD
 212  *  - GPIO47 is output STDTXD
 213  * - AC97 is in use*)
 214  *  - GPIO28 is input AC97CLK
 215  *  - GPIO29 is input AC97DatIn
 216  *  - GPIO30 is output AC97DatO
 217  *  - GPIO31 is output AC97SYNC
 218  *  - GPIO113 is output AC97_RESET
 219  * - SSP is in use
 220  *  - GPIO23 is output SSPSCLK
 221  *  - GPIO24 is output chip select to Max7301
 222  *  - GPIO25 is output SSPTXD
 223  *  - GPIO26 is input SSPRXD
 224  *  - GPIO27 is input for Max7301 IRQ
 225  *  - GPIO53 is input SSPSYSCLK
 226  * - SSP3 is in use
 227  *  - GPIO81 is output SSPTXD3
 228  *  - GPIO82 is input SSPRXD3
 229  *  - GPIO83 is output SSPSFRM
 230  *  - GPIO84 is output SSPCLK3
 231  *
 232  * Otherwise claimed GPIOs:
 233  * GPIO1 -> IRQ from user switch
 234  * GPIO9 -> IRQ from power management
 235  * GPIO10 -> IRQ from WML9712 AC97 controller
 236  * GPIO11 -> IRQ from IDE controller
 237  * GPIO12 -> IRQ from CF controller
 238  * GPIO13 -> IRQ from CF controller
 239  * GPIO14 -> GPIO free
 240  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 241  * GPIO19 -> GPIO free
 242  * GPIO20 -> /SDCS2
 243  * GPIO21 -> /CS3 PC card socket select
 244  * GPIO33 -> /CS5  network controller select
 245  * GPIO78 -> /CS2  (16 bit wide data path)
 246  * GPIO80 -> /CS4  (16 bit wide data path)
 247  * GPIO86 -> GPIO free
 248  * GPIO87 -> GPIO free
 249  * GPIO90 -> LED0 on CPU module
 250  * GPIO91 -> LED1 on CPI module
 251  * GPIO117 -> SCL
 252  * GPIO118 -> SDA
 253  */
 254
 255 static unsigned long pcm990_irq_enabled;
 256
 257 static void pcm990_mask_ack_irq(struct irq_data *d)
 258 {
 259         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 260
 261         pcm990_irq_enabled &= ~(1 << pcm990_irq);
 262
 263         pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 264 }
 265
 266 static void pcm990_unmask_irq(struct irq_data *d)
 267 {
 268         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 269         u8 val;
 270
 271         /* the irq can be acknowledged only if deasserted, so it's done here */
 272
 273         pcm990_irq_enabled |= (1 << pcm990_irq);
 274
 275         val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 276         val |= 1 << pcm990_irq;
 277         pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR);
 278
 279         pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 280 }
 281
 282 static struct irq_chip pcm990_irq_chip = {
 283         .irq_mask_ack   = pcm990_mask_ack_irq,
 284         .irq_unmask     = pcm990_unmask_irq,
 285 };
 286
 287 static void pcm990_irq_handler(unsigned int __irq, struct irq_desc *desc)
 288 {
 289         unsigned int irq;
 290         unsigned long pending;
 291
 292         pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 293         pending &= pcm990_irq_enabled;
 294
 295         do {
 296                 /* clear our parent IRQ */
 297                 desc->irq_data.chip->irq_ack(&desc->irq_data);
 298                 if (likely(pending)) {
 299                         irq = PCM027_IRQ(0) + __ffs(pending);
 300                         generic_handle_irq(irq);
 301                 }
 302                 pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 303                 pending &= pcm990_irq_enabled;
 304         } while (pending);
 305 }
 306
 307 static void __init pcm990_init_irq(void)
 308 {
 309         int irq;
 310
 311         /* setup extra PCM990 irqs */
 312         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 313                 irq_set_chip_and_handler(irq, &pcm990_irq_chip,
 314                                          handle_level_irq);
 315                 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 316         }
 317
 318         /* disable all Interrupts */
 319         pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA);
 320         pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR);
 321
 322         irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 323         irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 324 }
 325
 326 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 327                         void *data)
 328 {
 329         int err;
 330
 331         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0,
 332                              "MMC card detect", data);
 333         if (err)
 334                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 335                                 "card detect IRQ\n");
 336
 337         return err;
 338 }
 339
 340 static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 341 {
 342         struct pxamci_platform_data *p_d = dev->platform_data;
 343         u8 val;
 344
 345         val = pcm990_cpld_readb(PCM990_CTRL_REG5);
 346
 347         if ((1 << vdd) & p_d->ocr_mask)
 348                 val |= PCM990_CTRL_MMC2PWR;
 349         else
 350                 val &= ~PCM990_CTRL_MMC2PWR;
 351
 352         pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
 353         return 0;
 354 }
 355
 356 static void pcm990_mci_exit(struct device *dev, void *data)
 357 {
 358         free_irq(PCM027_MMCDET_IRQ, data);
 359 }
 360
 361 #define MSECS_PER_JIFFY (1000/HZ)
 362
 363 static struct pxamci_platform_data pcm990_mci_platform_data = {
 364         .detect_delay_ms        = 250,
 365         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 366         .init                   = pcm990_mci_init,
 367         .setpower               = pcm990_mci_setpower,
 368         .exit                   = pcm990_mci_exit,
 369         .gpio_card_detect       = -1,
 370         .gpio_card_ro           = -1,
 371         .gpio_power             = -1,
 372 };
 373
 374 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 375         .port_mode      = PMM_PERPORT_MODE,
 376         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 377         .power_on_delay = 10,
 378 };
 379
 380 /*
 381  * PXA27x Camera specific stuff
 382  */
 383 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 384 static unsigned long pcm990_camera_pin_config[] = {
 385         /* CIF */
 386         GPIO98_CIF_DD_0,
 387         GPIO105_CIF_DD_1,
 388         GPIO104_CIF_DD_2,
 389         GPIO103_CIF_DD_3,
 390         GPIO95_CIF_DD_4,
 391         GPIO94_CIF_DD_5,
 392         GPIO93_CIF_DD_6,
 393         GPIO108_CIF_DD_7,
 394         GPIO107_CIF_DD_8,
 395         GPIO106_CIF_DD_9,
 396         GPIO42_CIF_MCLK,
 397         GPIO45_CIF_PCLK,
 398         GPIO43_CIF_FV,
 399         GPIO44_CIF_LV,
 400 };
 401
 402 /*
 403  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 404  *      MCLK_EN:        Master clock is generated by PXA
 405  *      PCP:            Data sampled on the falling edge of pixel clock
 406  */
 407 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 408         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 409                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 410         .mclk_10khz = 1000,
 411 };
 412
 413 #include <linux/platform_data/pca953x.h>
 414
 415 static struct pca953x_platform_data pca9536_data = {
 416         .gpio_base      = PXA_NR_BUILTIN_GPIO,
 417 };
 418
 419 static int gpio_bus_switch = -EINVAL;
 420
 421 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
 422                                        unsigned long flags)
 423 {
 424         if (gpio_bus_switch < 0) {
 425                 if (flags == SOCAM_DATAWIDTH_10)
 426                         return 0;
 427                 else
 428                         return -EINVAL;
 429         }
 430
 431         if (flags & SOCAM_DATAWIDTH_8)
 432                 gpio_set_value_cansleep(gpio_bus_switch, 1);
 433         else
 434                 gpio_set_value_cansleep(gpio_bus_switch, 0);
 435
 436         return 0;
 437 }
 438
 439 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
 440 {
 441         int ret;
 442
 443         if (gpio_bus_switch < 0) {
 444                 ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera");
 445                 if (!ret) {
 446                         gpio_bus_switch = PXA_NR_BUILTIN_GPIO;
 447                         gpio_direction_output(gpio_bus_switch, 0);
 448                 }
 449         }
 450
 451         if (gpio_bus_switch >= 0)
 452                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
 453         else
 454                 return SOCAM_DATAWIDTH_10;
 455 }
 456
 457 static void pcm990_camera_free_bus(struct soc_camera_link *link)
 458 {
 459         if (gpio_bus_switch < 0)
 460                 return;
 461
 462         gpio_free(gpio_bus_switch);
 463         gpio_bus_switch = -EINVAL;
 464 }
 465
 466 /* Board I2C devices. */
 467 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 468         {
 469                 /* Must initialize before the camera(s) */
 470                 I2C_BOARD_INFO("pca9536", 0x41),
 471                 .platform_data = &pca9536_data,
 472         },
 473 };
 474
 475 static struct mt9v022_platform_data mt9v022_pdata = {
 476         .y_skip_top = 1,
 477 };
 478
 479 static struct i2c_board_info pcm990_camera_i2c[] = {
 480         {
 481                 I2C_BOARD_INFO("mt9v022", 0x48),
 482         }, {
 483                 I2C_BOARD_INFO("mt9m001", 0x5d),
 484         },
 485 };
 486
 487 static struct soc_camera_link iclink[] = {
 488         {
 489                 .bus_id                 = 0, /* Must match with the camera ID */
 490                 .board_info             = &pcm990_camera_i2c[0],
 491                 .priv                   = &mt9v022_pdata,
 492                 .i2c_adapter_id         = 0,
 493                 .query_bus_param        = pcm990_camera_query_bus_param,
 494                 .set_bus_param          = pcm990_camera_set_bus_param,
 495                 .free_bus               = pcm990_camera_free_bus,
 496         }, {
 497                 .bus_id                 = 0, /* Must match with the camera ID */
 498                 .board_info             = &pcm990_camera_i2c[1],
 499                 .i2c_adapter_id         = 0,
 500                 .query_bus_param        = pcm990_camera_query_bus_param,
 501                 .set_bus_param          = pcm990_camera_set_bus_param,
 502                 .free_bus               = pcm990_camera_free_bus,
 503         },
 504 };
 505
 506 static struct platform_device pcm990_camera[] = {
 507         {
 508                 .name   = "soc-camera-pdrv",
 509                 .id     = 0,
 510                 .dev    = {
 511                         .platform_data = &iclink[0],
 512                 },
 513         }, {
 514                 .name   = "soc-camera-pdrv",
 515                 .id     = 1,
 516                 .dev    = {
 517                         .platform_data = &iclink[1],
 518                 },
 519         },
 520 };
 521 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 522
 523 /*
 524  * system init for baseboard usage. Will be called by pcm027 init.
 525  *
 526  * Add platform devices present on this baseboard and init
 527  * them from CPU side as far as required to use them later on
 528  */
 529 void __init pcm990_baseboard_init(void)
 530 {
 531         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 532
 533         pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE);
 534         if (!pcm990_cpld_base) {
 535                 pr_err("pcm990: failed to ioremap cpld\n");
 536                 return;
 537         }
 538
 539         /* register CPLD's IRQ controller */
 540         pcm990_init_irq();
 541
 542 #ifndef CONFIG_PCM990_DISPLAY_NONE
 543         pxa_set_fb_info(NULL, &pcm990_fbinfo);
 544 #endif
 545         platform_device_register(&pcm990_backlight_device);
 546
 547         /* MMC */
 548         pxa_set_mci_info(&pcm990_mci_platform_data);
 549
 550         /* USB host */
 551         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 552
 553         pxa_set_i2c_info(NULL);
 554         pxa_set_ac97_info(NULL);
 555
 556 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 557         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 558         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 559
 560         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 561
 562         platform_device_register(&pcm990_camera[0]);
 563         platform_device_register(&pcm990_camera[1]);
 564 #endif
 565
 566         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 567 }