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#include <linux/gpio.h>
  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/mt9v022.h>
  30#include <media/soc_camera.h>
  31
  32#include <linux/platform_data/camera-pxa.h>
  33#include <asm/mach/map.h>
  34#include <mach/pxa27x.h>
  35#include <mach/audio.h>
  36#include <linux/platform_data/mmc-pxamci.h>
  37#include <linux/platform_data/usb-ohci-pxa27x.h>
  38#include <mach/pcm990_baseboard.h>
  39#include <linux/platform_data/video-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
  69static void __iomem *pcm990_cpld_base;
  70
  71static u8 pcm990_cpld_readb(unsigned int reg)
  72{
  73        return readb(pcm990_cpld_base + reg);
  74}
  75
  76static void pcm990_cpld_writeb(u8 value, unsigned int reg)
  77{
  78        writeb(value, pcm990_cpld_base + reg);
  79}
  80
  81/*
  82 * pcm990_lcd_power - control power supply to the LCD
  83 * @on: 0 = switch off, 1 = switch on
  84 *
  85 * Called by the pxafb driver
  86 */
  87#ifndef CONFIG_PCM990_DISPLAY_NONE
  88static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  89{
  90        if (on) {
  91                /* enable LCD-Latches
  92                 * power on LCD
  93                 */
  94                pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON,
  95                                PCM990_CTRL_REG3);
  96        } else {
  97                /* disable LCD-Latches
  98                 * power off LCD
  99                 */
 100                pcm990_cpld_writeb(0, PCM990_CTRL_REG3);
 101        }
 102}
 103#endif
 104
 105#if defined(CONFIG_PCM990_DISPLAY_SHARP)
 106static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
 107        .pixclock               = 28000,
 108        .xres                   = 640,
 109        .yres                   = 480,
 110        .bpp                    = 16,
 111        .hsync_len              = 20,
 112        .left_margin            = 103,
 113        .right_margin           = 47,
 114        .vsync_len              = 6,
 115        .upper_margin           = 28,
 116        .lower_margin           = 5,
 117        .sync                   = 0,
 118        .cmap_greyscale         = 0,
 119};
 120
 121static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 122        .modes                  = &fb_info_sharp_lq084v1dg21,
 123        .num_modes              = 1,
 124        .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 125        .pxafb_lcd_power        = pcm990_lcd_power,
 126};
 127#elif defined(CONFIG_PCM990_DISPLAY_NEC)
 128struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 129        .pixclock               = 39720,
 130        .xres                   = 640,
 131        .yres                   = 480,
 132        .bpp                    = 16,
 133        .hsync_len              = 32,
 134        .left_margin            = 16,
 135        .right_margin           = 48,
 136        .vsync_len              = 2,
 137        .upper_margin           = 12,
 138        .lower_margin           = 17,
 139        .sync                   = 0,
 140        .cmap_greyscale         = 0,
 141};
 142
 143static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 144        .modes                  = &fb_info_nec_nl6448bc20_18d,
 145        .num_modes              = 1,
 146        .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 147        .pxafb_lcd_power        = pcm990_lcd_power,
 148};
 149#endif
 150
 151static struct platform_pwm_backlight_data pcm990_backlight_data = {
 152        .pwm_id         = 0,
 153        .max_brightness = 1023,
 154        .dft_brightness = 1023,
 155        .pwm_period_ns  = 78770,
 156        .enable_gpio    = -1,
 157};
 158
 159static struct platform_device pcm990_backlight_device = {
 160        .name           = "pwm-backlight",
 161        .dev            = {
 162                .parent = &pxa27x_device_pwm0.dev,
 163                .platform_data = &pcm990_backlight_data,
 164        },
 165};
 166
 167/*
 168 * The PCM-990 development baseboard uses PCM-027's hardware in the
 169 * following way:
 170 *
 171 * - LCD support is in use
 172 *  - GPIO16 is output for back light on/off with PWM
 173 *  - GPIO58 ... GPIO73 are outputs for display data
 174 *  - GPIO74 is output output for LCDFCLK
 175 *  - GPIO75 is output for LCDLCLK
 176 *  - GPIO76 is output for LCDPCLK
 177 *  - GPIO77 is output for LCDBIAS
 178 * - MMC support is in use
 179 *  - GPIO32 is output for MMCCLK
 180 *  - GPIO92 is MMDAT0
 181 *  - GPIO109 is MMDAT1
 182 *  - GPIO110 is MMCS0
 183 *  - GPIO111 is MMCS1
 184 *  - GPIO112 is MMCMD
 185 * - IDE/CF card is in use
 186 *  - GPIO48 is output /POE
 187 *  - GPIO49 is output /PWE
 188 *  - GPIO50 is output /PIOR
 189 *  - GPIO51 is output /PIOW
 190 *  - GPIO54 is output /PCE2
 191 *  - GPIO55 is output /PREG
 192 *  - GPIO56 is input /PWAIT
 193 *  - GPIO57 is output /PIOS16
 194 *  - GPIO79 is output PSKTSEL
 195 *  - GPIO85 is output /PCE1
 196 * - FFUART is in use
 197 *  - GPIO34 is input FFRXD
 198 *  - GPIO35 is input FFCTS
 199 *  - GPIO36 is input FFDCD
 200 *  - GPIO37 is input FFDSR
 201 *  - GPIO38 is input FFRI
 202 *  - GPIO39 is output FFTXD
 203 *  - GPIO40 is output FFDTR
 204 *  - GPIO41 is output FFRTS
 205 * - BTUART is in use
 206 *  - GPIO42 is input BTRXD
 207 *  - GPIO43 is output BTTXD
 208 *  - GPIO44 is input BTCTS
 209 *  - GPIO45 is output BTRTS
 210 * - IRUART is in use
 211 *  - GPIO46 is input STDRXD
 212 *  - GPIO47 is output STDTXD
 213 * - AC97 is in use*)
 214 *  - GPIO28 is input AC97CLK
 215 *  - GPIO29 is input AC97DatIn
 216 *  - GPIO30 is output AC97DatO
 217 *  - GPIO31 is output AC97SYNC
 218 *  - GPIO113 is output AC97_RESET
 219 * - SSP is in use
 220 *  - GPIO23 is output SSPSCLK
 221 *  - GPIO24 is output chip select to Max7301
 222 *  - GPIO25 is output SSPTXD
 223 *  - GPIO26 is input SSPRXD
 224 *  - GPIO27 is input for Max7301 IRQ
 225 *  - GPIO53 is input SSPSYSCLK
 226 * - SSP3 is in use
 227 *  - GPIO81 is output SSPTXD3
 228 *  - GPIO82 is input SSPRXD3
 229 *  - GPIO83 is output SSPSFRM
 230 *  - GPIO84 is output SSPCLK3
 231 *
 232 * Otherwise claimed GPIOs:
 233 * GPIO1 -> IRQ from user switch
 234 * GPIO9 -> IRQ from power management
 235 * GPIO10 -> IRQ from WML9712 AC97 controller
 236 * GPIO11 -> IRQ from IDE controller
 237 * GPIO12 -> IRQ from CF controller
 238 * GPIO13 -> IRQ from CF controller
 239 * GPIO14 -> GPIO free
 240 * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 241 * GPIO19 -> GPIO free
 242 * GPIO20 -> /SDCS2
 243 * GPIO21 -> /CS3 PC card socket select
 244 * GPIO33 -> /CS5  network controller select
 245 * GPIO78 -> /CS2  (16 bit wide data path)
 246 * GPIO80 -> /CS4  (16 bit wide data path)
 247 * GPIO86 -> GPIO free
 248 * GPIO87 -> GPIO free
 249 * GPIO90 -> LED0 on CPU module
 250 * GPIO91 -> LED1 on CPI module
 251 * GPIO117 -> SCL
 252 * GPIO118 -> SDA
 253 */
 254
 255static unsigned long pcm990_irq_enabled;
 256
 257static void pcm990_mask_ack_irq(struct irq_data *d)
 258{
 259        int pcm990_irq = (d->irq - PCM027_IRQ(0));
 260
 261        pcm990_irq_enabled &= ~(1 << pcm990_irq);
 262
 263        pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 264}
 265
 266static void pcm990_unmask_irq(struct irq_data *d)
 267{
 268        int pcm990_irq = (d->irq - PCM027_IRQ(0));
 269        u8 val;
 270
 271        /* the irq can be acknowledged only if deasserted, so it's done here */
 272
 273        pcm990_irq_enabled |= (1 << pcm990_irq);
 274
 275        val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 276        val |= 1 << pcm990_irq;
 277        pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR);
 278
 279        pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 280}
 281
 282static struct irq_chip pcm990_irq_chip = {
 283        .irq_mask_ack   = pcm990_mask_ack_irq,
 284        .irq_unmask     = pcm990_unmask_irq,
 285};
 286
 287static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
 288{
 289        unsigned long pending;
 290
 291        pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 292        pending &= pcm990_irq_enabled;
 293
 294        do {
 295                /* clear our parent IRQ */
 296                desc->irq_data.chip->irq_ack(&desc->irq_data);
 297                if (likely(pending)) {
 298                        irq = PCM027_IRQ(0) + __ffs(pending);
 299                        generic_handle_irq(irq);
 300                }
 301                pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 302                pending &= pcm990_irq_enabled;
 303        } while (pending);
 304}
 305
 306static void __init pcm990_init_irq(void)
 307{
 308        int irq;
 309
 310        /* setup extra PCM990 irqs */
 311        for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 312                irq_set_chip_and_handler(irq, &pcm990_irq_chip,
 313                                         handle_level_irq);
 314                set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 315        }
 316
 317        /* disable all Interrupts */
 318        pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA);
 319        pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR);
 320
 321        irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 322        irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 323}
 324
 325static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 326                        void *data)
 327{
 328        int err;
 329
 330        err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0,
 331                             "MMC card detect", data);
 332        if (err)
 333                printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 334                                "card detect IRQ\n");
 335
 336        return err;
 337}
 338
 339static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 340{
 341        struct pxamci_platform_data *p_d = dev->platform_data;
 342        u8 val;
 343
 344        val = pcm990_cpld_readb(PCM990_CTRL_REG5);
 345
 346        if ((1 << vdd) & p_d->ocr_mask)
 347                val |= PCM990_CTRL_MMC2PWR;
 348        else
 349                val &= ~PCM990_CTRL_MMC2PWR;
 350
 351        pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
 352        return 0;
 353}
 354
 355static void pcm990_mci_exit(struct device *dev, void *data)
 356{
 357        free_irq(PCM027_MMCDET_IRQ, data);
 358}
 359
 360#define MSECS_PER_JIFFY (1000/HZ)
 361
 362static struct pxamci_platform_data pcm990_mci_platform_data = {
 363        .detect_delay_ms        = 250,
 364        .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 365        .init                   = pcm990_mci_init,
 366        .setpower               = pcm990_mci_setpower,
 367        .exit                   = pcm990_mci_exit,
 368        .gpio_card_detect       = -1,
 369        .gpio_card_ro           = -1,
 370        .gpio_power             = -1,
 371};
 372
 373static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 374        .port_mode      = PMM_PERPORT_MODE,
 375        .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 376        .power_on_delay = 10,
 377};
 378
 379/*
 380 * PXA27x Camera specific stuff
 381 */
 382#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 383static unsigned long pcm990_camera_pin_config[] = {
 384        /* CIF */
 385        GPIO98_CIF_DD_0,
 386        GPIO105_CIF_DD_1,
 387        GPIO104_CIF_DD_2,
 388        GPIO103_CIF_DD_3,
 389        GPIO95_CIF_DD_4,
 390        GPIO94_CIF_DD_5,
 391        GPIO93_CIF_DD_6,
 392        GPIO108_CIF_DD_7,
 393        GPIO107_CIF_DD_8,
 394        GPIO106_CIF_DD_9,
 395        GPIO42_CIF_MCLK,
 396        GPIO45_CIF_PCLK,
 397        GPIO43_CIF_FV,
 398        GPIO44_CIF_LV,
 399};
 400
 401/*
 402 * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 403 *      MCLK_EN:        Master clock is generated by PXA
 404 *      PCP:            Data sampled on the falling edge of pixel clock
 405 */
 406struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 407        .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 408                PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 409        .mclk_10khz = 1000,
 410};
 411
 412#include <linux/platform_data/pca953x.h>
 413
 414static struct pca953x_platform_data pca9536_data = {
 415        .gpio_base      = PXA_NR_BUILTIN_GPIO,
 416};
 417
 418static int gpio_bus_switch = -EINVAL;
 419
 420static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
 421                                       unsigned long flags)
 422{
 423        if (gpio_bus_switch < 0) {
 424                if (flags == SOCAM_DATAWIDTH_10)
 425                        return 0;
 426                else
 427                        return -EINVAL;
 428        }
 429
 430        if (flags & SOCAM_DATAWIDTH_8)
 431                gpio_set_value_cansleep(gpio_bus_switch, 1);
 432        else
 433                gpio_set_value_cansleep(gpio_bus_switch, 0);
 434
 435        return 0;
 436}
 437
 438static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
 439{
 440        int ret;
 441
 442        if (gpio_bus_switch < 0) {
 443                ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera");
 444                if (!ret) {
 445                        gpio_bus_switch = PXA_NR_BUILTIN_GPIO;
 446                        gpio_direction_output(gpio_bus_switch, 0);
 447                }
 448        }
 449
 450        if (gpio_bus_switch >= 0)
 451                return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
 452        else
 453                return SOCAM_DATAWIDTH_10;
 454}
 455
 456static void pcm990_camera_free_bus(struct soc_camera_link *link)
 457{
 458        if (gpio_bus_switch < 0)
 459                return;
 460
 461        gpio_free(gpio_bus_switch);
 462        gpio_bus_switch = -EINVAL;
 463}
 464
 465/* Board I2C devices. */
 466static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 467        {
 468                /* Must initialize before the camera(s) */
 469                I2C_BOARD_INFO("pca9536", 0x41),
 470                .platform_data = &pca9536_data,
 471        },
 472};
 473
 474static struct mt9v022_platform_data mt9v022_pdata = {
 475        .y_skip_top = 1,
 476};
 477
 478static struct i2c_board_info pcm990_camera_i2c[] = {
 479        {
 480                I2C_BOARD_INFO("mt9v022", 0x48),
 481        }, {
 482                I2C_BOARD_INFO("mt9m001", 0x5d),
 483        },
 484};
 485
 486static struct soc_camera_link iclink[] = {
 487        {
 488                .bus_id                 = 0, /* Must match with the camera ID */
 489                .board_info             = &pcm990_camera_i2c[0],
 490                .priv                   = &mt9v022_pdata,
 491                .i2c_adapter_id         = 0,
 492                .query_bus_param        = pcm990_camera_query_bus_param,
 493                .set_bus_param          = pcm990_camera_set_bus_param,
 494                .free_bus               = pcm990_camera_free_bus,
 495        }, {
 496                .bus_id                 = 0, /* Must match with the camera ID */
 497                .board_info             = &pcm990_camera_i2c[1],
 498                .i2c_adapter_id         = 0,
 499                .query_bus_param        = pcm990_camera_query_bus_param,
 500                .set_bus_param          = pcm990_camera_set_bus_param,
 501                .free_bus               = pcm990_camera_free_bus,
 502        },
 503};
 504
 505static struct platform_device pcm990_camera[] = {
 506        {
 507                .name   = "soc-camera-pdrv",
 508                .id     = 0,
 509                .dev    = {
 510                        .platform_data = &iclink[0],
 511                },
 512        }, {
 513                .name   = "soc-camera-pdrv",
 514                .id     = 1,
 515                .dev    = {
 516                        .platform_data = &iclink[1],
 517                },
 518        },
 519};
 520#endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 521
 522/*
 523 * system init for baseboard usage. Will be called by pcm027 init.
 524 *
 525 * Add platform devices present on this baseboard and init
 526 * them from CPU side as far as required to use them later on
 527 */
 528void __init pcm990_baseboard_init(void)
 529{
 530        pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 531
 532        pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE);
 533        if (!pcm990_cpld_base) {
 534                pr_err("pcm990: failed to ioremap cpld\n");
 535                return;
 536        }
 537
 538        /* register CPLD's IRQ controller */
 539        pcm990_init_irq();
 540
 541#ifndef CONFIG_PCM990_DISPLAY_NONE
 542        pxa_set_fb_info(NULL, &pcm990_fbinfo);
 543#endif
 544        platform_device_register(&pcm990_backlight_device);
 545
 546        /* MMC */
 547        pxa_set_mci_info(&pcm990_mci_platform_data);
 548
 549        /* USB host */
 550        pxa_set_ohci_info(&pcm990_ohci_platform_data);
 551
 552        pxa_set_i2c_info(NULL);
 553        pxa_set_ac97_info(NULL);
 554
 555#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 556        pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 557        pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 558
 559        i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 560
 561        platform_device_register(&pcm990_camera[0]);
 562        platform_device_register(&pcm990_camera[1]);
 563#endif
 564
 565        printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 566}
 567