kernel/2.6.29.6-aldebaran-rt/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         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 108         .pxafb_lcd_power        = pcm990_lcd_power,
 109 };
 110 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 111 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 112         .pixclock               = 39720,
 113         .xres                   = 640,
 114         .yres                   = 480,
 115         .bpp                    = 16,
 116         .hsync_len              = 32,
 117         .left_margin            = 16,
 118         .right_margin           = 48,
 119         .vsync_len              = 2,
 120         .upper_margin           = 12,
 121         .lower_margin           = 17,
 122         .sync                   = 0,
 123         .cmap_greyscale         = 0,
 124 };
 125
 126 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 127         .modes                  = &fb_info_nec_nl6448bc20_18d,
 128         .num_modes              = 1,
 129         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 130         .pxafb_lcd_power        = pcm990_lcd_power,
 131 };
 132 #endif
 133
 134 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 135         .pwm_id         = 0,
 136         .max_brightness = 1023,
 137         .dft_brightness = 1023,
 138         .pwm_period_ns  = 78770,
 139 };
 140
 141 static struct platform_device pcm990_backlight_device = {
 142         .name           = "pwm-backlight",
 143         .dev            = {
 144                 .parent = &pxa27x_device_pwm0.dev,
 145                 .platform_data = &pcm990_backlight_data,
 146         },
 147 };
 148
 149 /*
 150  * The PCM-990 development baseboard uses PCM-027's hardware in the
 151  * following way:
 152  *
 153  * - LCD support is in use
 154  *  - GPIO16 is output for back light on/off with PWM
 155  *  - GPIO58 ... GPIO73 are outputs for display data
 156  *  - GPIO74 is output output for LCDFCLK
 157  *  - GPIO75 is output for LCDLCLK
 158  *  - GPIO76 is output for LCDPCLK
 159  *  - GPIO77 is output for LCDBIAS
 160  * - MMC support is in use
 161  *  - GPIO32 is output for MMCCLK
 162  *  - GPIO92 is MMDAT0
 163  *  - GPIO109 is MMDAT1
 164  *  - GPIO110 is MMCS0
 165  *  - GPIO111 is MMCS1
 166  *  - GPIO112 is MMCMD
 167  * - IDE/CF card is in use
 168  *  - GPIO48 is output /POE
 169  *  - GPIO49 is output /PWE
 170  *  - GPIO50 is output /PIOR
 171  *  - GPIO51 is output /PIOW
 172  *  - GPIO54 is output /PCE2
 173  *  - GPIO55 is output /PREG
 174  *  - GPIO56 is input /PWAIT
 175  *  - GPIO57 is output /PIOS16
 176  *  - GPIO79 is output PSKTSEL
 177  *  - GPIO85 is output /PCE1
 178  * - FFUART is in use
 179  *  - GPIO34 is input FFRXD
 180  *  - GPIO35 is input FFCTS
 181  *  - GPIO36 is input FFDCD
 182  *  - GPIO37 is input FFDSR
 183  *  - GPIO38 is input FFRI
 184  *  - GPIO39 is output FFTXD
 185  *  - GPIO40 is output FFDTR
 186  *  - GPIO41 is output FFRTS
 187  * - BTUART is in use
 188  *  - GPIO42 is input BTRXD
 189  *  - GPIO43 is output BTTXD
 190  *  - GPIO44 is input BTCTS
 191  *  - GPIO45 is output BTRTS
 192  * - IRUART is in use
 193  *  - GPIO46 is input STDRXD
 194  *  - GPIO47 is output STDTXD
 195  * - AC97 is in use*)
 196  *  - GPIO28 is input AC97CLK
 197  *  - GPIO29 is input AC97DatIn
 198  *  - GPIO30 is output AC97DatO
 199  *  - GPIO31 is output AC97SYNC
 200  *  - GPIO113 is output AC97_RESET
 201  * - SSP is in use
 202  *  - GPIO23 is output SSPSCLK
 203  *  - GPIO24 is output chip select to Max7301
 204  *  - GPIO25 is output SSPTXD
 205  *  - GPIO26 is input SSPRXD
 206  *  - GPIO27 is input for Max7301 IRQ
 207  *  - GPIO53 is input SSPSYSCLK
 208  * - SSP3 is in use
 209  *  - GPIO81 is output SSPTXD3
 210  *  - GPIO82 is input SSPRXD3
 211  *  - GPIO83 is output SSPSFRM
 212  *  - GPIO84 is output SSPCLK3
 213  *
 214  * Otherwise claimed GPIOs:
 215  * GPIO1 -> IRQ from user switch
 216  * GPIO9 -> IRQ from power management
 217  * GPIO10 -> IRQ from WML9712 AC97 controller
 218  * GPIO11 -> IRQ from IDE controller
 219  * GPIO12 -> IRQ from CF controller
 220  * GPIO13 -> IRQ from CF controller
 221  * GPIO14 -> GPIO free
 222  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 223  * GPIO19 -> GPIO free
 224  * GPIO20 -> /SDCS2
 225  * GPIO21 -> /CS3 PC card socket select
 226  * GPIO33 -> /CS5  network controller select
 227  * GPIO78 -> /CS2  (16 bit wide data path)
 228  * GPIO80 -> /CS4  (16 bit wide data path)
 229  * GPIO86 -> GPIO free
 230  * GPIO87 -> GPIO free
 231  * GPIO90 -> LED0 on CPU module
 232  * GPIO91 -> LED1 on CPI module
 233  * GPIO117 -> SCL
 234  * GPIO118 -> SDA
 235  */
 236
 237 static unsigned long pcm990_irq_enabled;
 238
 239 static void pcm990_mask_ack_irq(unsigned int irq)
 240 {
 241         int pcm990_irq = (irq - PCM027_IRQ(0));
 242         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
 243 }
 244
 245 static void pcm990_unmask_irq(unsigned int irq)
 246 {
 247         int pcm990_irq = (irq - PCM027_IRQ(0));
 248         /* the irq can be acknowledged only if deasserted, so it's done here */
 249         PCM990_INTSETCLR |= 1 << pcm990_irq;
 250         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
 251 }
 252
 253 static struct irq_chip pcm990_irq_chip = {
 254         .mask_ack       = pcm990_mask_ack_irq,
 255         .unmask         = pcm990_unmask_irq,
 256 };
 257
 258 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
 259 {
 260         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 261
 262         do {
 263                 GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
 264                                         GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
 265                 if (likely(pending)) {
 266                         irq = PCM027_IRQ(0) + __ffs(pending);
 267                         generic_handle_irq(irq);
 268                 }
 269                 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 270         } while (pending);
 271 }
 272
 273 static void __init pcm990_init_irq(void)
 274 {
 275         int irq;
 276
 277         /* setup extra PCM990 irqs */
 278         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 279                 set_irq_chip(irq, &pcm990_irq_chip);
 280                 set_irq_handler(irq, handle_level_irq);
 281                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 282         }
 283
 284         PCM990_INTMSKENA = 0x00;        /* disable all Interrupts */
 285         PCM990_INTSETCLR = 0xFF;
 286
 287         set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 288         set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 289 }
 290
 291 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 292                         void *data)
 293 {
 294         int err;
 295
 296         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
 297                              "MMC card detect", data);
 298         if (err)
 299                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 300                                 "card detect IRQ\n");
 301
 302         return err;
 303 }
 304
 305 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 306 {
 307         struct pxamci_platform_data *p_d = dev->platform_data;
 308
 309         if ((1 << vdd) & p_d->ocr_mask)
 310                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 311                                                 PCM990_CTRL_MMC2PWR;
 312         else
 313                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 314                                                 ~PCM990_CTRL_MMC2PWR;
 315 }
 316
 317 static void pcm990_mci_exit(struct device *dev, void *data)
 318 {
 319         free_irq(PCM027_MMCDET_IRQ, data);
 320 }
 321
 322 #define MSECS_PER_JIFFY (1000/HZ)
 323
 324 static struct pxamci_platform_data pcm990_mci_platform_data = {
 325         .detect_delay   = 250 / MSECS_PER_JIFFY,
 326         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 327         .init           = pcm990_mci_init,
 328         .setpower       = pcm990_mci_setpower,
 329         .exit           = pcm990_mci_exit,
 330 };
 331
 332 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 333         .port_mode      = PMM_PERPORT_MODE,
 334         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 335         .power_on_delay = 10,
 336 };
 337
 338 /*
 339  * PXA27x Camera specific stuff
 340  */
 341 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 342 static unsigned long pcm990_camera_pin_config[] = {
 343         /* CIF */
 344         GPIO98_CIF_DD_0,
 345         GPIO105_CIF_DD_1,
 346         GPIO104_CIF_DD_2,
 347         GPIO103_CIF_DD_3,
 348         GPIO95_CIF_DD_4,
 349         GPIO94_CIF_DD_5,
 350         GPIO93_CIF_DD_6,
 351         GPIO108_CIF_DD_7,
 352         GPIO107_CIF_DD_8,
 353         GPIO106_CIF_DD_9,
 354         GPIO42_CIF_MCLK,
 355         GPIO45_CIF_PCLK,
 356         GPIO43_CIF_FV,
 357         GPIO44_CIF_LV,
 358 };
 359
 360 static int pcm990_pxacamera_init(struct device *dev)
 361 {
 362         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 363         return 0;
 364 }
 365
 366 /*
 367  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 368  *      MCLK_EN:        Master clock is generated by PXA
 369  *      PCP:            Data sampled on the falling edge of pixel clock
 370  */
 371 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 372         .init   = pcm990_pxacamera_init,
 373         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 374                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 375         .mclk_10khz = 1000,
 376 };
 377
 378 #include <linux/i2c/pca953x.h>
 379
 380 static struct pca953x_platform_data pca9536_data = {
 381         .gpio_base      = NR_BUILTIN_GPIO + 1,
 382 };
 383
 384 static struct soc_camera_link iclink[] = {
 385         {
 386                 .bus_id = 0, /* Must match with the camera ID above */
 387                 .gpio   = NR_BUILTIN_GPIO + 1,
 388         }, {
 389                 .bus_id = 0, /* Must match with the camera ID above */
 390                 .gpio   = -ENXIO,
 391         }
 392 };
 393
 394 /* Board I2C devices. */
 395 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 396         {
 397                 /* Must initialize before the camera(s) */
 398                 I2C_BOARD_INFO("pca9536", 0x41),
 399                 .platform_data = &pca9536_data,
 400         }, {
 401                 I2C_BOARD_INFO("mt9v022", 0x48),
 402                 .platform_data = &iclink[0], /* With extender */
 403         }, {
 404                 I2C_BOARD_INFO("mt9m001", 0x5d),
 405                 .platform_data = &iclink[0], /* With extender */
 406         },
 407 };
 408 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 409
 410 /*
 411  * enable generic access to the base board control CPLDs U6 and U7
 412  */
 413 static struct map_desc pcm990_io_desc[] __initdata = {
 414         {
 415                 .virtual        = PCM990_CTRL_BASE,
 416                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
 417                 .length         = PCM990_CTRL_SIZE,
 418                 .type           = MT_DEVICE     /* CPLD */
 419         }, {
 420                 .virtual        = PCM990_CF_PLD_BASE,
 421                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
 422                 .length         = PCM990_CF_PLD_SIZE,
 423                 .type           = MT_DEVICE     /* CPLD */
 424         }
 425 };
 426
 427 /*
 428  * system init for baseboard usage. Will be called by pcm027 init.
 429  *
 430  * Add platform devices present on this baseboard and init
 431  * them from CPU side as far as required to use them later on
 432  */
 433 void __init pcm990_baseboard_init(void)
 434 {
 435         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 436
 437         /* register CPLD access */
 438         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
 439
 440         /* register CPLD's IRQ controller */
 441         pcm990_init_irq();
 442
 443 #ifndef CONFIG_PCM990_DISPLAY_NONE
 444         set_pxa_fb_info(&pcm990_fbinfo);
 445 #endif
 446         platform_device_register(&pcm990_backlight_device);
 447
 448         /* MMC */
 449         pxa_set_mci_info(&pcm990_mci_platform_data);
 450
 451         /* USB host */
 452         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 453
 454         pxa_set_i2c_info(NULL);
 455         pxa_set_ac97_info(NULL);
 456
 457 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 458         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 459
 460         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 461 #endif
 462
 463         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 464 }