git.oblomov.eu Git - linux-2.6/blob - 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 <mach/i2c.h>
  32 #include <mach/camera.h>
  33 #include <asm/mach/map.h>
  34 #include <mach/pxa-regs.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 #include <mach/mfp-pxa27x.h>
  41
  42 #include "devices.h"
  43 #include "generic.h"
  44
  45 static unsigned long pcm990_pin_config[] __initdata = {
  46         /* MMC */
  47         GPIO32_MMC_CLK,
  48         GPIO112_MMC_CMD,
  49         GPIO92_MMC_DAT_0,
  50         GPIO109_MMC_DAT_1,
  51         GPIO110_MMC_DAT_2,
  52         GPIO111_MMC_DAT_3,
  53         /* USB */
  54         GPIO88_USBH1_PWR,
  55         GPIO89_USBH1_PEN,
  56         /* PWM0 */
  57         GPIO16_PWM0_OUT,
  58 };
  59
  60 /*
  61  * pcm990_lcd_power - control power supply to the LCD
  62  * @on: 0 = switch off, 1 = switch on
  63  *
  64  * Called by the pxafb driver
  65  */
  66 #ifndef CONFIG_PCM990_DISPLAY_NONE
  67 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  68 {
  69         if (on) {
  70                 /* enable LCD-Latches
  71                  * power on LCD
  72                  */
  73                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
  74                         PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
  75         } else {
  76                 /* disable LCD-Latches
  77                  * power off LCD
  78                  */
  79                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
  80         }
  81 }
  82 #endif
  83
  84 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
  85 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
  86         .pixclock               = 28000,
  87         .xres                   = 640,
  88         .yres                   = 480,
  89         .bpp                    = 16,
  90         .hsync_len              = 20,
  91         .left_margin            = 103,
  92         .right_margin           = 47,
  93         .vsync_len              = 6,
  94         .upper_margin           = 28,
  95         .lower_margin           = 5,
  96         .sync                   = 0,
  97         .cmap_greyscale         = 0,
  98 };
  99
 100 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 101         .modes                  = &fb_info_sharp_lq084v1dg21,
 102         .num_modes              = 1,
 103         .lccr0                  = LCCR0_PAS,
 104         .lccr3                  = LCCR3_PCP,
 105         .pxafb_lcd_power        = pcm990_lcd_power,
 106 };
 107 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 108 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 109         .pixclock               = 39720,
 110         .xres                   = 640,
 111         .yres                   = 480,
 112         .bpp                    = 16,
 113         .hsync_len              = 32,
 114         .left_margin            = 16,
 115         .right_margin           = 48,
 116         .vsync_len              = 2,
 117         .upper_margin           = 12,
 118         .lower_margin           = 17,
 119         .sync                   = 0,
 120         .cmap_greyscale         = 0,
 121 };
 122
 123 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 124         .modes                  = &fb_info_nec_nl6448bc20_18d,
 125         .num_modes              = 1,
 126         .lccr0                  = LCCR0_Act,
 127         .lccr3                  = LCCR3_PixFlEdg,
 128         .pxafb_lcd_power        = pcm990_lcd_power,
 129 };
 130 #endif
 131
 132 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 133         .pwm_id         = 0,
 134         .max_brightness = 1023,
 135         .dft_brightness = 1023,
 136         .pwm_period_ns  = 78770,
 137 };
 138
 139 static struct platform_device pcm990_backlight_device = {
 140         .name           = "pwm-backlight",
 141         .dev            = {
 142                 .parent = &pxa27x_device_pwm0.dev,
 143                 .platform_data = &pcm990_backlight_data,
 144         },
 145 };
 146
 147 /*
 148  * The PCM-990 development baseboard uses PCM-027's hardware in the
 149  * following way:
 150  *
 151  * - LCD support is in use
 152  *  - GPIO16 is output for back light on/off with PWM
 153  *  - GPIO58 ... GPIO73 are outputs for display data
 154  *  - GPIO74 is output output for LCDFCLK
 155  *  - GPIO75 is output for LCDLCLK
 156  *  - GPIO76 is output for LCDPCLK
 157  *  - GPIO77 is output for LCDBIAS
 158  * - MMC support is in use
 159  *  - GPIO32 is output for MMCCLK
 160  *  - GPIO92 is MMDAT0
 161  *  - GPIO109 is MMDAT1
 162  *  - GPIO110 is MMCS0
 163  *  - GPIO111 is MMCS1
 164  *  - GPIO112 is MMCMD
 165  * - IDE/CF card is in use
 166  *  - GPIO48 is output /POE
 167  *  - GPIO49 is output /PWE
 168  *  - GPIO50 is output /PIOR
 169  *  - GPIO51 is output /PIOW
 170  *  - GPIO54 is output /PCE2
 171  *  - GPIO55 is output /PREG
 172  *  - GPIO56 is input /PWAIT
 173  *  - GPIO57 is output /PIOS16
 174  *  - GPIO79 is output PSKTSEL
 175  *  - GPIO85 is output /PCE1
 176  * - FFUART is in use
 177  *  - GPIO34 is input FFRXD
 178  *  - GPIO35 is input FFCTS
 179  *  - GPIO36 is input FFDCD
 180  *  - GPIO37 is input FFDSR
 181  *  - GPIO38 is input FFRI
 182  *  - GPIO39 is output FFTXD
 183  *  - GPIO40 is output FFDTR
 184  *  - GPIO41 is output FFRTS
 185  * - BTUART is in use
 186  *  - GPIO42 is input BTRXD
 187  *  - GPIO43 is output BTTXD
 188  *  - GPIO44 is input BTCTS
 189  *  - GPIO45 is output BTRTS
 190  * - IRUART is in use
 191  *  - GPIO46 is input STDRXD
 192  *  - GPIO47 is output STDTXD
 193  * - AC97 is in use*)
 194  *  - GPIO28 is input AC97CLK
 195  *  - GPIO29 is input AC97DatIn
 196  *  - GPIO30 is output AC97DatO
 197  *  - GPIO31 is output AC97SYNC
 198  *  - GPIO113 is output AC97_RESET
 199  * - SSP is in use
 200  *  - GPIO23 is output SSPSCLK
 201  *  - GPIO24 is output chip select to Max7301
 202  *  - GPIO25 is output SSPTXD
 203  *  - GPIO26 is input SSPRXD
 204  *  - GPIO27 is input for Max7301 IRQ
 205  *  - GPIO53 is input SSPSYSCLK
 206  * - SSP3 is in use
 207  *  - GPIO81 is output SSPTXD3
 208  *  - GPIO82 is input SSPRXD3
 209  *  - GPIO83 is output SSPSFRM
 210  *  - GPIO84 is output SSPCLK3
 211  *
 212  * Otherwise claimed GPIOs:
 213  * GPIO1 -> IRQ from user switch
 214  * GPIO9 -> IRQ from power management
 215  * GPIO10 -> IRQ from WML9712 AC97 controller
 216  * GPIO11 -> IRQ from IDE controller
 217  * GPIO12 -> IRQ from CF controller
 218  * GPIO13 -> IRQ from CF controller
 219  * GPIO14 -> GPIO free
 220  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 221  * GPIO19 -> GPIO free
 222  * GPIO20 -> /SDCS2
 223  * GPIO21 -> /CS3 PC card socket select
 224  * GPIO33 -> /CS5  network controller select
 225  * GPIO78 -> /CS2  (16 bit wide data path)
 226  * GPIO80 -> /CS4  (16 bit wide data path)
 227  * GPIO86 -> GPIO free
 228  * GPIO87 -> GPIO free
 229  * GPIO90 -> LED0 on CPU module
 230  * GPIO91 -> LED1 on CPI module
 231  * GPIO117 -> SCL
 232  * GPIO118 -> SDA
 233  */
 234
 235 static unsigned long pcm990_irq_enabled;
 236
 237 static void pcm990_mask_ack_irq(unsigned int irq)
 238 {
 239         int pcm990_irq = (irq - PCM027_IRQ(0));
 240         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
 241 }
 242
 243 static void pcm990_unmask_irq(unsigned int irq)
 244 {
 245         int pcm990_irq = (irq - PCM027_IRQ(0));
 246         /* the irq can be acknowledged only if deasserted, so it's done here */
 247         PCM990_INTSETCLR |= 1 << pcm990_irq;
 248         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
 249 }
 250
 251 static struct irq_chip pcm990_irq_chip = {
 252         .mask_ack       = pcm990_mask_ack_irq,
 253         .unmask         = pcm990_unmask_irq,
 254 };
 255
 256 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
 257 {
 258         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 259
 260         do {
 261                 GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
 262                                         GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
 263                 if (likely(pending)) {
 264                         irq = PCM027_IRQ(0) + __ffs(pending);
 265                         desc = irq_desc + irq;
 266                         desc_handle_irq(irq, desc);
 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 };
 330
 331 /*
 332  * init OHCI hardware to work with
 333  *
 334  * Note: Only USB port 1 (host only) is connected
 335  *
 336  * GPIO88 (USBHPWR#1): overcurrent in, overcurrent when low
 337  * GPIO89 (USBHPEN#1): power-on out, on when low
 338  */
 339 static int pcm990_ohci_init(struct device *dev)
 340 {
 341         /*
 342          * disable USB port 2 and 3
 343          * power sense is active low
 344          */
 345         UHCHR = ((UHCHR) | UHCHR_PCPL | UHCHR_PSPL | UHCHR_SSEP2 |
 346                                 UHCHR_SSEP3) & ~(UHCHR_SSEP1 | UHCHR_SSE);
 347         /*
 348          * wait 10ms after Power on
 349          * overcurrent per port
 350          * power switch per port
 351          */
 352         UHCRHDA = (5<<24) | (1<<11) | (1<<8);   /* FIXME: Required? */
 353
 354         return 0;
 355 }
 356
 357 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 358         .port_mode      = PMM_PERPORT_MODE,
 359         .init           = pcm990_ohci_init,
 360         .exit           = NULL,
 361 };
 362
 363 /*
 364  * PXA27x Camera specific stuff
 365  */
 366 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 367 static unsigned long pcm990_camera_pin_config[] = {
 368         /* CIF */
 369         GPIO98_CIF_DD_0,
 370         GPIO105_CIF_DD_1,
 371         GPIO104_CIF_DD_2,
 372         GPIO103_CIF_DD_3,
 373         GPIO95_CIF_DD_4,
 374         GPIO94_CIF_DD_5,
 375         GPIO93_CIF_DD_6,
 376         GPIO108_CIF_DD_7,
 377         GPIO107_CIF_DD_8,
 378         GPIO106_CIF_DD_9,
 379         GPIO42_CIF_MCLK,
 380         GPIO45_CIF_PCLK,
 381         GPIO43_CIF_FV,
 382         GPIO44_CIF_LV,
 383 };
 384
 385 static int pcm990_pxacamera_init(struct device *dev)
 386 {
 387         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 388         return 0;
 389 }
 390
 391 /*
 392  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 393  *      MCLK_EN:        Master clock is generated by PXA
 394  *      PCP:            Data sampled on the falling edge of pixel clock
 395  */
 396 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 397         .init   = pcm990_pxacamera_init,
 398         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 399                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 400         .mclk_10khz = 1000,
 401 };
 402
 403 #include <linux/i2c/pca953x.h>
 404
 405 static struct pca953x_platform_data pca9536_data = {
 406         .gpio_base      = NR_BUILTIN_GPIO + 1,
 407 };
 408
 409 static struct soc_camera_link iclink[] = {
 410         {
 411                 .bus_id = 0, /* Must match with the camera ID above */
 412                 .gpio   = NR_BUILTIN_GPIO + 1,
 413         }, {
 414                 .bus_id = 0, /* Must match with the camera ID above */
 415         }
 416 };
 417
 418 /* Board I2C devices. */
 419 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 420         {
 421                 /* Must initialize before the camera(s) */
 422                 I2C_BOARD_INFO("pca9536", 0x41),
 423                 .platform_data = &pca9536_data,
 424         }, {
 425                 I2C_BOARD_INFO("mt9v022", 0x48),
 426                 .platform_data = &iclink[0], /* With extender */
 427         }, {
 428                 I2C_BOARD_INFO("mt9m001", 0x5d),
 429                 .platform_data = &iclink[0], /* With extender */
 430         },
 431 };
 432 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 433
 434 /*
 435  * enable generic access to the base board control CPLDs U6 and U7
 436  */
 437 static struct map_desc pcm990_io_desc[] __initdata = {
 438         {
 439                 .virtual        = PCM990_CTRL_BASE,
 440                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
 441                 .length         = PCM990_CTRL_SIZE,
 442                 .type           = MT_DEVICE     /* CPLD */
 443         }, {
 444                 .virtual        = PCM990_CF_PLD_BASE,
 445                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
 446                 .length         = PCM990_CF_PLD_SIZE,
 447                 .type           = MT_DEVICE     /* CPLD */
 448         }
 449 };
 450
 451 /*
 452  * system init for baseboard usage. Will be called by pcm027 init.
 453  *
 454  * Add platform devices present on this baseboard and init
 455  * them from CPU side as far as required to use them later on
 456  */
 457 void __init pcm990_baseboard_init(void)
 458 {
 459         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 460
 461         /* register CPLD access */
 462         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
 463
 464         /* register CPLD's IRQ controller */
 465         pcm990_init_irq();
 466
 467 #ifndef CONFIG_PCM990_DISPLAY_NONE
 468         set_pxa_fb_info(&pcm990_fbinfo);
 469 #endif
 470         platform_device_register(&pcm990_backlight_device);
 471
 472         /* MMC */
 473         pxa_set_mci_info(&pcm990_mci_platform_data);
 474
 475         /* USB host */
 476         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 477
 478         pxa_set_i2c_info(NULL);
 479         pxa_set_ac97_info(NULL);
 480
 481 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 482         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 483
 484         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 485 #endif
 486
 487         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 488 }