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
  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 <asm/gpio.h>
  32 #include <mach/camera.h>
  33 #include <asm/mach/map.h>
  34 #include <mach/pxa27x.h>
  35 #include <mach/audio.h>
  36 #include <mach/mmc.h>
  37 #include <mach/ohci.h>
  38 #include <mach/pcm990_baseboard.h>
  39 #include <mach/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 /*
  70  * pcm990_lcd_power - control power supply to the LCD
  71  * @on: 0 = switch off, 1 = switch on
  72  *
  73  * Called by the pxafb driver
  74  */
  75 #ifndef CONFIG_PCM990_DISPLAY_NONE
  76 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  77 {
  78         if (on) {
  79                 /* enable LCD-Latches
  80                  * power on LCD
  81                  */
  82                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
  83                         PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
  84         } else {
  85                 /* disable LCD-Latches
  86                  * power off LCD
  87                  */
  88                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
  89         }
  90 }
  91 #endif
  92
  93 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
  94 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
  95         .pixclock               = 28000,
  96         .xres                   = 640,
  97         .yres                   = 480,
  98         .bpp                    = 16,
  99         .hsync_len              = 20,
 100         .left_margin            = 103,
 101         .right_margin           = 47,
 102         .vsync_len              = 6,
 103         .upper_margin           = 28,
 104         .lower_margin           = 5,
 105         .sync                   = 0,
 106         .cmap_greyscale         = 0,
 107 };
 108
 109 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 110         .modes                  = &fb_info_sharp_lq084v1dg21,
 111         .num_modes              = 1,
 112         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 113         .pxafb_lcd_power        = pcm990_lcd_power,
 114 };
 115 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 116 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 117         .pixclock               = 39720,
 118         .xres                   = 640,
 119         .yres                   = 480,
 120         .bpp                    = 16,
 121         .hsync_len              = 32,
 122         .left_margin            = 16,
 123         .right_margin           = 48,
 124         .vsync_len              = 2,
 125         .upper_margin           = 12,
 126         .lower_margin           = 17,
 127         .sync                   = 0,
 128         .cmap_greyscale         = 0,
 129 };
 130
 131 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 132         .modes                  = &fb_info_nec_nl6448bc20_18d,
 133         .num_modes              = 1,
 134         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 135         .pxafb_lcd_power        = pcm990_lcd_power,
 136 };
 137 #endif
 138
 139 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 140         .pwm_id         = 0,
 141         .max_brightness = 1023,
 142         .dft_brightness = 1023,
 143         .pwm_period_ns  = 78770,
 144 };
 145
 146 static struct platform_device pcm990_backlight_device = {
 147         .name           = "pwm-backlight",
 148         .dev            = {
 149                 .parent = &pxa27x_device_pwm0.dev,
 150                 .platform_data = &pcm990_backlight_data,
 151         },
 152 };
 153
 154 /*
 155  * The PCM-990 development baseboard uses PCM-027's hardware in the
 156  * following way:
 157  *
 158  * - LCD support is in use
 159  *  - GPIO16 is output for back light on/off with PWM
 160  *  - GPIO58 ... GPIO73 are outputs for display data
 161  *  - GPIO74 is output output for LCDFCLK
 162  *  - GPIO75 is output for LCDLCLK
 163  *  - GPIO76 is output for LCDPCLK
 164  *  - GPIO77 is output for LCDBIAS
 165  * - MMC support is in use
 166  *  - GPIO32 is output for MMCCLK
 167  *  - GPIO92 is MMDAT0
 168  *  - GPIO109 is MMDAT1
 169  *  - GPIO110 is MMCS0
 170  *  - GPIO111 is MMCS1
 171  *  - GPIO112 is MMCMD
 172  * - IDE/CF card is in use
 173  *  - GPIO48 is output /POE
 174  *  - GPIO49 is output /PWE
 175  *  - GPIO50 is output /PIOR
 176  *  - GPIO51 is output /PIOW
 177  *  - GPIO54 is output /PCE2
 178  *  - GPIO55 is output /PREG
 179  *  - GPIO56 is input /PWAIT
 180  *  - GPIO57 is output /PIOS16
 181  *  - GPIO79 is output PSKTSEL
 182  *  - GPIO85 is output /PCE1
 183  * - FFUART is in use
 184  *  - GPIO34 is input FFRXD
 185  *  - GPIO35 is input FFCTS
 186  *  - GPIO36 is input FFDCD
 187  *  - GPIO37 is input FFDSR
 188  *  - GPIO38 is input FFRI
 189  *  - GPIO39 is output FFTXD
 190  *  - GPIO40 is output FFDTR
 191  *  - GPIO41 is output FFRTS
 192  * - BTUART is in use
 193  *  - GPIO42 is input BTRXD
 194  *  - GPIO43 is output BTTXD
 195  *  - GPIO44 is input BTCTS
 196  *  - GPIO45 is output BTRTS
 197  * - IRUART is in use
 198  *  - GPIO46 is input STDRXD
 199  *  - GPIO47 is output STDTXD
 200  * - AC97 is in use*)
 201  *  - GPIO28 is input AC97CLK
 202  *  - GPIO29 is input AC97DatIn
 203  *  - GPIO30 is output AC97DatO
 204  *  - GPIO31 is output AC97SYNC
 205  *  - GPIO113 is output AC97_RESET
 206  * - SSP is in use
 207  *  - GPIO23 is output SSPSCLK
 208  *  - GPIO24 is output chip select to Max7301
 209  *  - GPIO25 is output SSPTXD
 210  *  - GPIO26 is input SSPRXD
 211  *  - GPIO27 is input for Max7301 IRQ
 212  *  - GPIO53 is input SSPSYSCLK
 213  * - SSP3 is in use
 214  *  - GPIO81 is output SSPTXD3
 215  *  - GPIO82 is input SSPRXD3
 216  *  - GPIO83 is output SSPSFRM
 217  *  - GPIO84 is output SSPCLK3
 218  *
 219  * Otherwise claimed GPIOs:
 220  * GPIO1 -> IRQ from user switch
 221  * GPIO9 -> IRQ from power management
 222  * GPIO10 -> IRQ from WML9712 AC97 controller
 223  * GPIO11 -> IRQ from IDE controller
 224  * GPIO12 -> IRQ from CF controller
 225  * GPIO13 -> IRQ from CF controller
 226  * GPIO14 -> GPIO free
 227  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 228  * GPIO19 -> GPIO free
 229  * GPIO20 -> /SDCS2
 230  * GPIO21 -> /CS3 PC card socket select
 231  * GPIO33 -> /CS5  network controller select
 232  * GPIO78 -> /CS2  (16 bit wide data path)
 233  * GPIO80 -> /CS4  (16 bit wide data path)
 234  * GPIO86 -> GPIO free
 235  * GPIO87 -> GPIO free
 236  * GPIO90 -> LED0 on CPU module
 237  * GPIO91 -> LED1 on CPI module
 238  * GPIO117 -> SCL
 239  * GPIO118 -> SDA
 240  */
 241
 242 static unsigned long pcm990_irq_enabled;
 243
 244 static void pcm990_mask_ack_irq(struct irq_data *d)
 245 {
 246         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 247         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
 248 }
 249
 250 static void pcm990_unmask_irq(struct irq_data *d)
 251 {
 252         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 253         /* the irq can be acknowledged only if deasserted, so it's done here */
 254         PCM990_INTSETCLR |= 1 << pcm990_irq;
 255         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
 256 }
 257
 258 static struct irq_chip pcm990_irq_chip = {
 259         .irq_mask_ack   = pcm990_mask_ack_irq,
 260         .irq_unmask     = pcm990_unmask_irq,
 261 };
 262
 263 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
 264 {
 265         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 266
 267         do {
 268                 /* clear our parent IRQ */
 269                 desc->irq_data.chip->irq_ack(&desc->irq_data);
 270                 if (likely(pending)) {
 271                         irq = PCM027_IRQ(0) + __ffs(pending);
 272                         generic_handle_irq(irq);
 273                 }
 274                 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 275         } while (pending);
 276 }
 277
 278 static void __init pcm990_init_irq(void)
 279 {
 280         int irq;
 281
 282         /* setup extra PCM990 irqs */
 283         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 284                 irq_set_chip_and_handler(irq, &pcm990_irq_chip,
 285                                          handle_level_irq);
 286                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 287         }
 288
 289         PCM990_INTMSKENA = 0x00;        /* disable all Interrupts */
 290         PCM990_INTSETCLR = 0xFF;
 291
 292         irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 293         irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 294 }
 295
 296 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 297                         void *data)
 298 {
 299         int err;
 300
 301         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
 302                              "MMC card detect", data);
 303         if (err)
 304                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 305                                 "card detect IRQ\n");
 306
 307         return err;
 308 }
 309
 310 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 311 {
 312         struct pxamci_platform_data *p_d = dev->platform_data;
 313
 314         if ((1 << vdd) & p_d->ocr_mask)
 315                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 316                                                 PCM990_CTRL_MMC2PWR;
 317         else
 318                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 319                                                 ~PCM990_CTRL_MMC2PWR;
 320 }
 321
 322 static void pcm990_mci_exit(struct device *dev, void *data)
 323 {
 324         free_irq(PCM027_MMCDET_IRQ, data);
 325 }
 326
 327 #define MSECS_PER_JIFFY (1000/HZ)
 328
 329 static struct pxamci_platform_data pcm990_mci_platform_data = {
 330         .detect_delay_ms        = 250,
 331         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 332         .init                   = pcm990_mci_init,
 333         .setpower               = pcm990_mci_setpower,
 334         .exit                   = pcm990_mci_exit,
 335         .gpio_card_detect       = -1,
 336         .gpio_card_ro           = -1,
 337         .gpio_power             = -1,
 338 };
 339
 340 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 341         .port_mode      = PMM_PERPORT_MODE,
 342         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 343         .power_on_delay = 10,
 344 };
 345
 346 /*
 347  * PXA27x Camera specific stuff
 348  */
 349 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 350 static unsigned long pcm990_camera_pin_config[] = {
 351         /* CIF */
 352         GPIO98_CIF_DD_0,
 353         GPIO105_CIF_DD_1,
 354         GPIO104_CIF_DD_2,
 355         GPIO103_CIF_DD_3,
 356         GPIO95_CIF_DD_4,
 357         GPIO94_CIF_DD_5,
 358         GPIO93_CIF_DD_6,
 359         GPIO108_CIF_DD_7,
 360         GPIO107_CIF_DD_8,
 361         GPIO106_CIF_DD_9,
 362         GPIO42_CIF_MCLK,
 363         GPIO45_CIF_PCLK,
 364         GPIO43_CIF_FV,
 365         GPIO44_CIF_LV,
 366 };
 367
 368 /*
 369  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 370  *      MCLK_EN:        Master clock is generated by PXA
 371  *      PCP:            Data sampled on the falling edge of pixel clock
 372  */
 373 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 374         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 375                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 376         .mclk_10khz = 1000,
 377 };
 378
 379 #include <linux/i2c/pca953x.h>
 380
 381 static struct pca953x_platform_data pca9536_data = {
 382         .gpio_base      = NR_BUILTIN_GPIO,
 383 };
 384
 385 static int gpio_bus_switch = -EINVAL;
 386
 387 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
 388                                        unsigned long flags)
 389 {
 390         if (gpio_bus_switch < 0) {
 391                 if (flags == SOCAM_DATAWIDTH_10)
 392                         return 0;
 393                 else
 394                         return -EINVAL;
 395         }
 396
 397         if (flags & SOCAM_DATAWIDTH_8)
 398                 gpio_set_value(gpio_bus_switch, 1);
 399         else
 400                 gpio_set_value(gpio_bus_switch, 0);
 401
 402         return 0;
 403 }
 404
 405 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
 406 {
 407         int ret;
 408
 409         if (gpio_bus_switch < 0) {
 410                 ret = gpio_request(NR_BUILTIN_GPIO, "camera");
 411                 if (!ret) {
 412                         gpio_bus_switch = NR_BUILTIN_GPIO;
 413                         gpio_direction_output(gpio_bus_switch, 0);
 414                 }
 415         }
 416
 417         if (gpio_bus_switch >= 0)
 418                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
 419         else
 420                 return SOCAM_DATAWIDTH_10;
 421 }
 422
 423 static void pcm990_camera_free_bus(struct soc_camera_link *link)
 424 {
 425         if (gpio_bus_switch < 0)
 426                 return;
 427
 428         gpio_free(gpio_bus_switch);
 429         gpio_bus_switch = -EINVAL;
 430 }
 431
 432 /* Board I2C devices. */
 433 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 434         {
 435                 /* Must initialize before the camera(s) */
 436                 I2C_BOARD_INFO("pca9536", 0x41),
 437                 .platform_data = &pca9536_data,
 438         },
 439 };
 440
 441 static struct i2c_board_info pcm990_camera_i2c[] = {
 442         {
 443                 I2C_BOARD_INFO("mt9v022", 0x48),
 444         }, {
 445                 I2C_BOARD_INFO("mt9m001", 0x5d),
 446         },
 447 };
 448
 449 static struct soc_camera_link iclink[] = {
 450         {
 451                 .bus_id                 = 0, /* Must match with the camera ID */
 452                 .board_info             = &pcm990_camera_i2c[0],
 453                 .i2c_adapter_id         = 0,
 454                 .query_bus_param        = pcm990_camera_query_bus_param,
 455                 .set_bus_param          = pcm990_camera_set_bus_param,
 456                 .free_bus               = pcm990_camera_free_bus,
 457         }, {
 458                 .bus_id                 = 0, /* Must match with the camera ID */
 459                 .board_info             = &pcm990_camera_i2c[1],
 460                 .i2c_adapter_id         = 0,
 461                 .query_bus_param        = pcm990_camera_query_bus_param,
 462                 .set_bus_param          = pcm990_camera_set_bus_param,
 463                 .free_bus               = pcm990_camera_free_bus,
 464         },
 465 };
 466
 467 static struct platform_device pcm990_camera[] = {
 468         {
 469                 .name   = "soc-camera-pdrv",
 470                 .id     = 0,
 471                 .dev    = {
 472                         .platform_data = &iclink[0],
 473                 },
 474         }, {
 475                 .name   = "soc-camera-pdrv",
 476                 .id     = 1,
 477                 .dev    = {
 478                         .platform_data = &iclink[1],
 479                 },
 480         },
 481 };
 482 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 483
 484 /*
 485  * enable generic access to the base board control CPLDs U6 and U7
 486  */
 487 static struct map_desc pcm990_io_desc[] __initdata = {
 488         {
 489                 .virtual        = PCM990_CTRL_BASE,
 490                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
 491                 .length         = PCM990_CTRL_SIZE,
 492                 .type           = MT_DEVICE     /* CPLD */
 493         }, {
 494                 .virtual        = PCM990_CF_PLD_BASE,
 495                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
 496                 .length         = PCM990_CF_PLD_SIZE,
 497                 .type           = MT_DEVICE     /* CPLD */
 498         }
 499 };
 500
 501 /*
 502  * system init for baseboard usage. Will be called by pcm027 init.
 503  *
 504  * Add platform devices present on this baseboard and init
 505  * them from CPU side as far as required to use them later on
 506  */
 507 void __init pcm990_baseboard_init(void)
 508 {
 509         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 510
 511         /* register CPLD access */
 512         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
 513
 514         /* register CPLD's IRQ controller */
 515         pcm990_init_irq();
 516
 517 #ifndef CONFIG_PCM990_DISPLAY_NONE
 518         pxa_set_fb_info(NULL, &pcm990_fbinfo);
 519 #endif
 520         platform_device_register(&pcm990_backlight_device);
 521
 522         /* MMC */
 523         pxa_set_mci_info(&pcm990_mci_platform_data);
 524
 525         /* USB host */
 526         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 527
 528         pxa_set_i2c_info(NULL);
 529         pxa_set_ac97_info(NULL);
 530
 531 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 532         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 533         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 534
 535         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 536
 537         platform_device_register(&pcm990_camera[0]);
 538         platform_device_register(&pcm990_camera[1]);
 539 #endif
 540
 541         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 542 }