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/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
  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        /* 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
  76static 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)
  94static 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
 109static 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)
 116struct 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
 131static 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
 139static 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
 146static 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
 242static unsigned long pcm990_irq_enabled;
 243
 244static 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
 250static 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
 258static struct irq_chip pcm990_irq_chip = {
 259        .irq_mask_ack   = pcm990_mask_ack_irq,
 260        .irq_unmask     = pcm990_unmask_irq,
 261};
 262
 263static 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
 278static 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
 296static 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
 310static 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
 322static 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
 329static 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
 340static 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)
 350static 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 */
 373struct 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
 381static struct pca953x_platform_data pca9536_data = {
 382        .gpio_base      = NR_BUILTIN_GPIO,
 383};
 384
 385static int gpio_bus_switch = -EINVAL;
 386
 387static 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
 405static 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
 423static 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. */
 433static 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
 441static struct i2c_board_info pcm990_camera_i2c[] = {
 442        {
 443                I2C_BOARD_INFO("mt9v022", 0x48),
 444        }, {
 445                I2C_BOARD_INFO("mt9m001", 0x5d),
 446        },
 447};
 448
 449static 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
 467static 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 */
 487static 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 */
 507void __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}
 543