LXR linux/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
  44static 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
  70static 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)
  88static 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
 103static 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)
 110struct 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
 125static 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
 133static 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
 140static 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
 236static unsigned long pcm990_irq_enabled;
 237
 238static 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
 244static 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
 252static struct irq_chip pcm990_irq_chip = {
 253        .mask_ack       = pcm990_mask_ack_irq,
 254        .unmask         = pcm990_unmask_irq,
 255};
 256
 257static 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
 272static 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
 290static 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
 304static 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
 316static 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
 323static 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
 334static 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)
 344static 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
 362static 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 */
 373struct 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
 382static struct pca953x_platform_data pca9536_data = {
 383        .gpio_base      = NR_BUILTIN_GPIO,
 384};
 385
 386static int gpio_bus_switch = -EINVAL;
 387
 388static 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
 406static 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
 424static 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. */
 434static 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
 442static struct i2c_board_info pcm990_camera_i2c[] = {
 443        {
 444                I2C_BOARD_INFO("mt9v022", 0x48),
 445        }, {
 446                I2C_BOARD_INFO("mt9m001", 0x5d),
 447        },
 448};
 449
 450static 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
 470static 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 */
 490static 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 */
 510void __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}
 545