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/pwm_backlight.h>
  27
  28 #include <media/soc_camera.h>
  29
  30 #include <asm/gpio.h>
  31 #include <plat/i2c.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
  63 /*
  64  * pcm990_lcd_power - control power supply to the LCD
  65  * @on: 0 = switch off, 1 = switch on
  66  *
  67  * Called by the pxafb driver
  68  */
  69 #ifndef CONFIG_PCM990_DISPLAY_NONE
  70 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  71 {
  72         if (on) {
  73                 /* enable LCD-Latches
  74                  * power on LCD
  75                  */
  76                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
  77                         PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
  78         } else {
  79                 /* disable LCD-Latches
  80                  * power off LCD
  81                  */
  82                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
  83         }
  84 }
  85 #endif
  86
  87 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
  88 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
  89         .pixclock               = 28000,
  90         .xres                   = 640,
  91         .yres                   = 480,
  92         .bpp                    = 16,
  93         .hsync_len              = 20,
  94         .left_margin            = 103,
  95         .right_margin           = 47,
  96         .vsync_len              = 6,
  97         .upper_margin           = 28,
  98         .lower_margin           = 5,
  99         .sync                   = 0,
 100         .cmap_greyscale         = 0,
 101 };
 102
 103 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 104         .modes                  = &fb_info_sharp_lq084v1dg21,
 105         .num_modes              = 1,
 106         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 107         .pxafb_lcd_power        = pcm990_lcd_power,
 108 };
 109 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 110 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 111         .pixclock               = 39720,
 112         .xres                   = 640,
 113         .yres                   = 480,
 114         .bpp                    = 16,
 115         .hsync_len              = 32,
 116         .left_margin            = 16,
 117         .right_margin           = 48,
 118         .vsync_len              = 2,
 119         .upper_margin           = 12,
 120         .lower_margin           = 17,
 121         .sync                   = 0,
 122         .cmap_greyscale         = 0,
 123 };
 124
 125 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 126         .modes                  = &fb_info_nec_nl6448bc20_18d,
 127         .num_modes              = 1,
 128         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 129         .pxafb_lcd_power        = pcm990_lcd_power,
 130 };
 131 #endif
 132
 133 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 134         .pwm_id         = 0,
 135         .max_brightness = 1023,
 136         .dft_brightness = 1023,
 137         .pwm_period_ns  = 78770,
 138 };
 139
 140 static struct platform_device pcm990_backlight_device = {
 141         .name           = "pwm-backlight",
 142         .dev            = {
 143                 .parent = &pxa27x_device_pwm0.dev,
 144                 .platform_data = &pcm990_backlight_data,
 145         },
 146 };
 147
 148 /*
 149  * The PCM-990 development baseboard uses PCM-027's hardware in the
 150  * following way:
 151  *
 152  * - LCD support is in use
 153  *  - GPIO16 is output for back light on/off with PWM
 154  *  - GPIO58 ... GPIO73 are outputs for display data
 155  *  - GPIO74 is output output for LCDFCLK
 156  *  - GPIO75 is output for LCDLCLK
 157  *  - GPIO76 is output for LCDPCLK
 158  *  - GPIO77 is output for LCDBIAS
 159  * - MMC support is in use
 160  *  - GPIO32 is output for MMCCLK
 161  *  - GPIO92 is MMDAT0
 162  *  - GPIO109 is MMDAT1
 163  *  - GPIO110 is MMCS0
 164  *  - GPIO111 is MMCS1
 165  *  - GPIO112 is MMCMD
 166  * - IDE/CF card is in use
 167  *  - GPIO48 is output /POE
 168  *  - GPIO49 is output /PWE
 169  *  - GPIO50 is output /PIOR
 170  *  - GPIO51 is output /PIOW
 171  *  - GPIO54 is output /PCE2
 172  *  - GPIO55 is output /PREG
 173  *  - GPIO56 is input /PWAIT
 174  *  - GPIO57 is output /PIOS16
 175  *  - GPIO79 is output PSKTSEL
 176  *  - GPIO85 is output /PCE1
 177  * - FFUART is in use
 178  *  - GPIO34 is input FFRXD
 179  *  - GPIO35 is input FFCTS
 180  *  - GPIO36 is input FFDCD
 181  *  - GPIO37 is input FFDSR
 182  *  - GPIO38 is input FFRI
 183  *  - GPIO39 is output FFTXD
 184  *  - GPIO40 is output FFDTR
 185  *  - GPIO41 is output FFRTS
 186  * - BTUART is in use
 187  *  - GPIO42 is input BTRXD
 188  *  - GPIO43 is output BTTXD
 189  *  - GPIO44 is input BTCTS
 190  *  - GPIO45 is output BTRTS
 191  * - IRUART is in use
 192  *  - GPIO46 is input STDRXD
 193  *  - GPIO47 is output STDTXD
 194  * - AC97 is in use*)
 195  *  - GPIO28 is input AC97CLK
 196  *  - GPIO29 is input AC97DatIn
 197  *  - GPIO30 is output AC97DatO
 198  *  - GPIO31 is output AC97SYNC
 199  *  - GPIO113 is output AC97_RESET
 200  * - SSP is in use
 201  *  - GPIO23 is output SSPSCLK
 202  *  - GPIO24 is output chip select to Max7301
 203  *  - GPIO25 is output SSPTXD
 204  *  - GPIO26 is input SSPRXD
 205  *  - GPIO27 is input for Max7301 IRQ
 206  *  - GPIO53 is input SSPSYSCLK
 207  * - SSP3 is in use
 208  *  - GPIO81 is output SSPTXD3
 209  *  - GPIO82 is input SSPRXD3
 210  *  - GPIO83 is output SSPSFRM
 211  *  - GPIO84 is output SSPCLK3
 212  *
 213  * Otherwise claimed GPIOs:
 214  * GPIO1 -> IRQ from user switch
 215  * GPIO9 -> IRQ from power management
 216  * GPIO10 -> IRQ from WML9712 AC97 controller
 217  * GPIO11 -> IRQ from IDE controller
 218  * GPIO12 -> IRQ from CF controller
 219  * GPIO13 -> IRQ from CF controller
 220  * GPIO14 -> GPIO free
 221  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 222  * GPIO19 -> GPIO free
 223  * GPIO20 -> /SDCS2
 224  * GPIO21 -> /CS3 PC card socket select
 225  * GPIO33 -> /CS5  network controller select
 226  * GPIO78 -> /CS2  (16 bit wide data path)
 227  * GPIO80 -> /CS4  (16 bit wide data path)
 228  * GPIO86 -> GPIO free
 229  * GPIO87 -> GPIO free
 230  * GPIO90 -> LED0 on CPU module
 231  * GPIO91 -> LED1 on CPI module
 232  * GPIO117 -> SCL
 233  * GPIO118 -> SDA
 234  */
 235
 236 static unsigned long pcm990_irq_enabled;
 237
 238 static void pcm990_mask_ack_irq(unsigned int irq)
 239 {
 240         int pcm990_irq = (irq - PCM027_IRQ(0));
 241         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
 242 }
 243
 244 static void pcm990_unmask_irq(unsigned int irq)
 245 {
 246         int pcm990_irq = (irq - PCM027_IRQ(0));
 247         /* the irq can be acknowledged only if deasserted, so it's done here */
 248         PCM990_INTSETCLR |= 1 << pcm990_irq;
 249         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
 250 }
 251
 252 static struct irq_chip pcm990_irq_chip = {
 253         .mask_ack       = pcm990_mask_ack_irq,
 254         .unmask         = pcm990_unmask_irq,
 255 };
 256
 257 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
 258 {
 259         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 260
 261         do {
 262                 GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
 263                                         GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
 264                 if (likely(pending)) {
 265                         irq = PCM027_IRQ(0) + __ffs(pending);
 266                         generic_handle_irq(irq);
 267                 }
 268                 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 269         } while (pending);
 270 }
 271
 272 static void __init pcm990_init_irq(void)
 273 {
 274         int irq;
 275
 276         /* setup extra PCM990 irqs */
 277         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 278                 set_irq_chip(irq, &pcm990_irq_chip);
 279                 set_irq_handler(irq, handle_level_irq);
 280                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 281         }
 282
 283         PCM990_INTMSKENA = 0x00;        /* disable all Interrupts */
 284         PCM990_INTSETCLR = 0xFF;
 285
 286         set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 287         set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 288 }
 289
 290 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 291                         void *data)
 292 {
 293         int err;
 294
 295         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
 296                              "MMC card detect", data);
 297         if (err)
 298                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 299                                 "card detect IRQ\n");
 300
 301         return err;
 302 }
 303
 304 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 305 {
 306         struct pxamci_platform_data *p_d = dev->platform_data;
 307
 308         if ((1 << vdd) & p_d->ocr_mask)
 309                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 310                                                 PCM990_CTRL_MMC2PWR;
 311         else
 312                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 313                                                 ~PCM990_CTRL_MMC2PWR;
 314 }
 315
 316 static void pcm990_mci_exit(struct device *dev, void *data)
 317 {
 318         free_irq(PCM027_MMCDET_IRQ, data);
 319 }
 320
 321 #define MSECS_PER_JIFFY (1000/HZ)
 322
 323 static struct pxamci_platform_data pcm990_mci_platform_data = {
 324         .detect_delay           = 250 / MSECS_PER_JIFFY,
 325         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 326         .init                   = pcm990_mci_init,
 327         .setpower               = pcm990_mci_setpower,
 328         .exit                   = pcm990_mci_exit,
 329         .gpio_card_detect       = -1,
 330         .gpio_card_ro           = -1,
 331         .gpio_power             = -1,
 332 };
 333
 334 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 335         .port_mode      = PMM_PERPORT_MODE,
 336         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 337         .power_on_delay = 10,
 338 };
 339
 340 /*
 341  * PXA27x Camera specific stuff
 342  */
 343 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 344 static unsigned long pcm990_camera_pin_config[] = {
 345         /* CIF */
 346         GPIO98_CIF_DD_0,
 347         GPIO105_CIF_DD_1,
 348         GPIO104_CIF_DD_2,
 349         GPIO103_CIF_DD_3,
 350         GPIO95_CIF_DD_4,
 351         GPIO94_CIF_DD_5,
 352         GPIO93_CIF_DD_6,
 353         GPIO108_CIF_DD_7,
 354         GPIO107_CIF_DD_8,
 355         GPIO106_CIF_DD_9,
 356         GPIO42_CIF_MCLK,
 357         GPIO45_CIF_PCLK,
 358         GPIO43_CIF_FV,
 359         GPIO44_CIF_LV,
 360 };
 361
 362 static int pcm990_pxacamera_init(struct device *dev)
 363 {
 364         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 365         return 0;
 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         .init   = pcm990_pxacamera_init,
 375         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 376                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 377         .mclk_10khz = 1000,
 378 };
 379
 380 #include <linux/i2c/pca953x.h>
 381
 382 static struct pca953x_platform_data pca9536_data = {
 383         .gpio_base      = NR_BUILTIN_GPIO,
 384 };
 385
 386 static int gpio_bus_switch = -EINVAL;
 387
 388 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
 389                                        unsigned long flags)
 390 {
 391         if (gpio_bus_switch < 0) {
 392                 if (flags == SOCAM_DATAWIDTH_10)
 393                         return 0;
 394                 else
 395                         return -EINVAL;
 396         }
 397
 398         if (flags & SOCAM_DATAWIDTH_8)
 399                 gpio_set_value(gpio_bus_switch, 1);
 400         else
 401                 gpio_set_value(gpio_bus_switch, 0);
 402
 403         return 0;
 404 }
 405
 406 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
 407 {
 408         int ret;
 409
 410         if (gpio_bus_switch < 0) {
 411                 ret = gpio_request(NR_BUILTIN_GPIO, "camera");
 412                 if (!ret) {
 413                         gpio_bus_switch = NR_BUILTIN_GPIO;
 414                         gpio_direction_output(gpio_bus_switch, 0);
 415                 }
 416         }
 417
 418         if (gpio_bus_switch >= 0)
 419                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
 420         else
 421                 return SOCAM_DATAWIDTH_10;
 422 }
 423
 424 static void pcm990_camera_free_bus(struct soc_camera_link *link)
 425 {
 426         if (gpio_bus_switch < 0)
 427                 return;
 428
 429         gpio_free(gpio_bus_switch);
 430         gpio_bus_switch = -EINVAL;
 431 }
 432
 433 /* Board I2C devices. */
 434 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 435         {
 436                 /* Must initialize before the camera(s) */
 437                 I2C_BOARD_INFO("pca9536", 0x41),
 438                 .platform_data = &pca9536_data,
 439         },
 440 };
 441
 442 static struct i2c_board_info pcm990_camera_i2c[] = {
 443         {
 444                 I2C_BOARD_INFO("mt9v022", 0x48),
 445         }, {
 446                 I2C_BOARD_INFO("mt9m001", 0x5d),
 447         },
 448 };
 449
 450 static struct soc_camera_link iclink[] = {
 451         {
 452                 .bus_id                 = 0, /* Must match with the camera ID */
 453                 .board_info             = &pcm990_camera_i2c[0],
 454                 .i2c_adapter_id         = 0,
 455                 .query_bus_param        = pcm990_camera_query_bus_param,
 456                 .set_bus_param          = pcm990_camera_set_bus_param,
 457                 .free_bus               = pcm990_camera_free_bus,
 458                 .module_name            = "mt9v022",
 459         }, {
 460                 .bus_id                 = 0, /* Must match with the camera ID */
 461                 .board_info             = &pcm990_camera_i2c[1],
 462                 .i2c_adapter_id         = 0,
 463                 .query_bus_param        = pcm990_camera_query_bus_param,
 464                 .set_bus_param          = pcm990_camera_set_bus_param,
 465                 .free_bus               = pcm990_camera_free_bus,
 466                 .module_name            = "mt9m001",
 467         },
 468 };
 469
 470 static struct platform_device pcm990_camera[] = {
 471         {
 472                 .name   = "soc-camera-pdrv",
 473                 .id     = 0,
 474                 .dev    = {
 475                         .platform_data = &iclink[0],
 476                 },
 477         }, {
 478                 .name   = "soc-camera-pdrv",
 479                 .id     = 1,
 480                 .dev    = {
 481                         .platform_data = &iclink[1],
 482                 },
 483         },
 484 };
 485 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 486
 487 /*
 488  * enable generic access to the base board control CPLDs U6 and U7
 489  */
 490 static struct map_desc pcm990_io_desc[] __initdata = {
 491         {
 492                 .virtual        = PCM990_CTRL_BASE,
 493                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
 494                 .length         = PCM990_CTRL_SIZE,
 495                 .type           = MT_DEVICE     /* CPLD */
 496         }, {
 497                 .virtual        = PCM990_CF_PLD_BASE,
 498                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
 499                 .length         = PCM990_CF_PLD_SIZE,
 500                 .type           = MT_DEVICE     /* CPLD */
 501         }
 502 };
 503
 504 /*
 505  * system init for baseboard usage. Will be called by pcm027 init.
 506  *
 507  * Add platform devices present on this baseboard and init
 508  * them from CPU side as far as required to use them later on
 509  */
 510 void __init pcm990_baseboard_init(void)
 511 {
 512         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 513
 514         /* register CPLD access */
 515         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
 516
 517         /* register CPLD's IRQ controller */
 518         pcm990_init_irq();
 519
 520 #ifndef CONFIG_PCM990_DISPLAY_NONE
 521         set_pxa_fb_info(&pcm990_fbinfo);
 522 #endif
 523         platform_device_register(&pcm990_backlight_device);
 524
 525         /* MMC */
 526         pxa_set_mci_info(&pcm990_mci_platform_data);
 527
 528         /* USB host */
 529         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 530
 531         pxa_set_i2c_info(NULL);
 532         pxa_set_ac97_info(NULL);
 533
 534 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 535         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 536
 537         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 538
 539         platform_device_register(&pcm990_camera[0]);
 540         platform_device_register(&pcm990_camera[1]);
 541 #endif
 542
 543         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 544 }