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         /* I2C */
  60         GPIO117_I2C_SCL,
  61         GPIO118_I2C_SDA,
  62 };
  63
  64 /*
  65  * pcm990_lcd_power - control power supply to the LCD
  66  * @on: 0 = switch off, 1 = switch on
  67  *
  68  * Called by the pxafb driver
  69  */
  70 #ifndef CONFIG_PCM990_DISPLAY_NONE
  71 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  72 {
  73         if (on) {
  74                 /* enable LCD-Latches
  75                  * power on LCD
  76                  */
  77                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
  78                         PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
  79         } else {
  80                 /* disable LCD-Latches
  81                  * power off LCD
  82                  */
  83                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
  84         }
  85 }
  86 #endif
  87
  88 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
  89 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
  90         .pixclock               = 28000,
  91         .xres                   = 640,
  92         .yres                   = 480,
  93         .bpp                    = 16,
  94         .hsync_len              = 20,
  95         .left_margin            = 103,
  96         .right_margin           = 47,
  97         .vsync_len              = 6,
  98         .upper_margin           = 28,
  99         .lower_margin           = 5,
 100         .sync                   = 0,
 101         .cmap_greyscale         = 0,
 102 };
 103
 104 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 105         .modes                  = &fb_info_sharp_lq084v1dg21,
 106         .num_modes              = 1,
 107         .lccr0                  = LCCR0_PAS,
 108         .lccr3                  = LCCR3_PCP,
 109         .pxafb_lcd_power        = pcm990_lcd_power,
 110 };
 111 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 112 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 113         .pixclock               = 39720,
 114         .xres                   = 640,
 115         .yres                   = 480,
 116         .bpp                    = 16,
 117         .hsync_len              = 32,
 118         .left_margin            = 16,
 119         .right_margin           = 48,
 120         .vsync_len              = 2,
 121         .upper_margin           = 12,
 122         .lower_margin           = 17,
 123         .sync                   = 0,
 124         .cmap_greyscale         = 0,
 125 };
 126
 127 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 128         .modes                  = &fb_info_nec_nl6448bc20_18d,
 129         .num_modes              = 1,
 130         .lccr0                  = LCCR0_Act,
 131         .lccr3                  = LCCR3_PixFlEdg,
 132         .pxafb_lcd_power        = pcm990_lcd_power,
 133 };
 134 #endif
 135
 136 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 137         .pwm_id         = 0,
 138         .max_brightness = 1023,
 139         .dft_brightness = 1023,
 140         .pwm_period_ns  = 78770,
 141 };
 142
 143 static struct platform_device pcm990_backlight_device = {
 144         .name           = "pwm-backlight",
 145         .dev            = {
 146                 .parent = &pxa27x_device_pwm0.dev,
 147                 .platform_data = &pcm990_backlight_data,
 148         },
 149 };
 150
 151 /*
 152  * The PCM-990 development baseboard uses PCM-027's hardware in the
 153  * following way:
 154  *
 155  * - LCD support is in use
 156  *  - GPIO16 is output for back light on/off with PWM
 157  *  - GPIO58 ... GPIO73 are outputs for display data
 158  *  - GPIO74 is output output for LCDFCLK
 159  *  - GPIO75 is output for LCDLCLK
 160  *  - GPIO76 is output for LCDPCLK
 161  *  - GPIO77 is output for LCDBIAS
 162  * - MMC support is in use
 163  *  - GPIO32 is output for MMCCLK
 164  *  - GPIO92 is MMDAT0
 165  *  - GPIO109 is MMDAT1
 166  *  - GPIO110 is MMCS0
 167  *  - GPIO111 is MMCS1
 168  *  - GPIO112 is MMCMD
 169  * - IDE/CF card is in use
 170  *  - GPIO48 is output /POE
 171  *  - GPIO49 is output /PWE
 172  *  - GPIO50 is output /PIOR
 173  *  - GPIO51 is output /PIOW
 174  *  - GPIO54 is output /PCE2
 175  *  - GPIO55 is output /PREG
 176  *  - GPIO56 is input /PWAIT
 177  *  - GPIO57 is output /PIOS16
 178  *  - GPIO79 is output PSKTSEL
 179  *  - GPIO85 is output /PCE1
 180  * - FFUART is in use
 181  *  - GPIO34 is input FFRXD
 182  *  - GPIO35 is input FFCTS
 183  *  - GPIO36 is input FFDCD
 184  *  - GPIO37 is input FFDSR
 185  *  - GPIO38 is input FFRI
 186  *  - GPIO39 is output FFTXD
 187  *  - GPIO40 is output FFDTR
 188  *  - GPIO41 is output FFRTS
 189  * - BTUART is in use
 190  *  - GPIO42 is input BTRXD
 191  *  - GPIO43 is output BTTXD
 192  *  - GPIO44 is input BTCTS
 193  *  - GPIO45 is output BTRTS
 194  * - IRUART is in use
 195  *  - GPIO46 is input STDRXD
 196  *  - GPIO47 is output STDTXD
 197  * - AC97 is in use*)
 198  *  - GPIO28 is input AC97CLK
 199  *  - GPIO29 is input AC97DatIn
 200  *  - GPIO30 is output AC97DatO
 201  *  - GPIO31 is output AC97SYNC
 202  *  - GPIO113 is output AC97_RESET
 203  * - SSP is in use
 204  *  - GPIO23 is output SSPSCLK
 205  *  - GPIO24 is output chip select to Max7301
 206  *  - GPIO25 is output SSPTXD
 207  *  - GPIO26 is input SSPRXD
 208  *  - GPIO27 is input for Max7301 IRQ
 209  *  - GPIO53 is input SSPSYSCLK
 210  * - SSP3 is in use
 211  *  - GPIO81 is output SSPTXD3
 212  *  - GPIO82 is input SSPRXD3
 213  *  - GPIO83 is output SSPSFRM
 214  *  - GPIO84 is output SSPCLK3
 215  *
 216  * Otherwise claimed GPIOs:
 217  * GPIO1 -> IRQ from user switch
 218  * GPIO9 -> IRQ from power management
 219  * GPIO10 -> IRQ from WML9712 AC97 controller
 220  * GPIO11 -> IRQ from IDE controller
 221  * GPIO12 -> IRQ from CF controller
 222  * GPIO13 -> IRQ from CF controller
 223  * GPIO14 -> GPIO free
 224  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 225  * GPIO19 -> GPIO free
 226  * GPIO20 -> /SDCS2
 227  * GPIO21 -> /CS3 PC card socket select
 228  * GPIO33 -> /CS5  network controller select
 229  * GPIO78 -> /CS2  (16 bit wide data path)
 230  * GPIO80 -> /CS4  (16 bit wide data path)
 231  * GPIO86 -> GPIO free
 232  * GPIO87 -> GPIO free
 233  * GPIO90 -> LED0 on CPU module
 234  * GPIO91 -> LED1 on CPI module
 235  * GPIO117 -> SCL
 236  * GPIO118 -> SDA
 237  */
 238
 239 static unsigned long pcm990_irq_enabled;
 240
 241 static void pcm990_mask_ack_irq(unsigned int irq)
 242 {
 243         int pcm990_irq = (irq - PCM027_IRQ(0));
 244         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
 245 }
 246
 247 static void pcm990_unmask_irq(unsigned int irq)
 248 {
 249         int pcm990_irq = (irq - PCM027_IRQ(0));
 250         /* the irq can be acknowledged only if deasserted, so it's done here */
 251         PCM990_INTSETCLR |= 1 << pcm990_irq;
 252         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
 253 }
 254
 255 static struct irq_chip pcm990_irq_chip = {
 256         .mask_ack       = pcm990_mask_ack_irq,
 257         .unmask         = pcm990_unmask_irq,
 258 };
 259
 260 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
 261 {
 262         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 263
 264         do {
 265                 GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
 266                                         GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
 267                 if (likely(pending)) {
 268                         irq = PCM027_IRQ(0) + __ffs(pending);
 269                         generic_handle_irq(irq);
 270                 }
 271                 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 272         } while (pending);
 273 }
 274
 275 static void __init pcm990_init_irq(void)
 276 {
 277         int irq;
 278
 279         /* setup extra PCM990 irqs */
 280         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 281                 set_irq_chip(irq, &pcm990_irq_chip);
 282                 set_irq_handler(irq, handle_level_irq);
 283                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 284         }
 285
 286         PCM990_INTMSKENA = 0x00;        /* disable all Interrupts */
 287         PCM990_INTSETCLR = 0xFF;
 288
 289         set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 290         set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 291 }
 292
 293 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 294                         void *data)
 295 {
 296         int err;
 297
 298         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
 299                              "MMC card detect", data);
 300         if (err)
 301                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 302                                 "card detect IRQ\n");
 303
 304         return err;
 305 }
 306
 307 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 308 {
 309         struct pxamci_platform_data *p_d = dev->platform_data;
 310
 311         if ((1 << vdd) & p_d->ocr_mask)
 312                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 313                                                 PCM990_CTRL_MMC2PWR;
 314         else
 315                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 316                                                 ~PCM990_CTRL_MMC2PWR;
 317 }
 318
 319 static void pcm990_mci_exit(struct device *dev, void *data)
 320 {
 321         free_irq(PCM027_MMCDET_IRQ, data);
 322 }
 323
 324 #define MSECS_PER_JIFFY (1000/HZ)
 325
 326 static struct pxamci_platform_data pcm990_mci_platform_data = {
 327         .detect_delay   = 250 / MSECS_PER_JIFFY,
 328         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 329         .init           = pcm990_mci_init,
 330         .setpower       = pcm990_mci_setpower,
 331         .exit           = pcm990_mci_exit,
 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 + 1,
 384 };
 385
 386 static struct soc_camera_link iclink[] = {
 387         {
 388                 .bus_id = 0, /* Must match with the camera ID above */
 389                 .gpio   = NR_BUILTIN_GPIO + 1,
 390         }, {
 391                 .bus_id = 0, /* Must match with the camera ID above */
 392                 .gpio   = -ENXIO,
 393         }
 394 };
 395
 396 /* Board I2C devices. */
 397 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 398         {
 399                 /* Must initialize before the camera(s) */
 400                 I2C_BOARD_INFO("pca9536", 0x41),
 401                 .platform_data = &pca9536_data,
 402         }, {
 403                 I2C_BOARD_INFO("mt9v022", 0x48),
 404                 .platform_data = &iclink[0], /* With extender */
 405         }, {
 406                 I2C_BOARD_INFO("mt9m001", 0x5d),
 407                 .platform_data = &iclink[0], /* With extender */
 408         },
 409 };
 410 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 411
 412 /*
 413  * enable generic access to the base board control CPLDs U6 and U7
 414  */
 415 static struct map_desc pcm990_io_desc[] __initdata = {
 416         {
 417                 .virtual        = PCM990_CTRL_BASE,
 418                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
 419                 .length         = PCM990_CTRL_SIZE,
 420                 .type           = MT_DEVICE     /* CPLD */
 421         }, {
 422                 .virtual        = PCM990_CF_PLD_BASE,
 423                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
 424                 .length         = PCM990_CF_PLD_SIZE,
 425                 .type           = MT_DEVICE     /* CPLD */
 426         }
 427 };
 428
 429 /*
 430  * system init for baseboard usage. Will be called by pcm027 init.
 431  *
 432  * Add platform devices present on this baseboard and init
 433  * them from CPU side as far as required to use them later on
 434  */
 435 void __init pcm990_baseboard_init(void)
 436 {
 437         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 438
 439         /* register CPLD access */
 440         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
 441
 442         /* register CPLD's IRQ controller */
 443         pcm990_init_irq();
 444
 445 #ifndef CONFIG_PCM990_DISPLAY_NONE
 446         set_pxa_fb_info(&pcm990_fbinfo);
 447 #endif
 448         platform_device_register(&pcm990_backlight_device);
 449
 450         /* MMC */
 451         pxa_set_mci_info(&pcm990_mci_platform_data);
 452
 453         /* USB host */
 454         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 455
 456         pxa_set_i2c_info(NULL);
 457         pxa_set_ac97_info(NULL);
 458
 459 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 460         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 461
 462         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 463 #endif
 464
 465         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 466 }