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   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
  60 /*
  61  * pcm990_lcd_power - control power supply to the LCD
  62  * @on: 0 = switch off, 1 = switch on
  63  *
  64  * Called by the pxafb driver
  65  */
  66 #ifndef CONFIG_PCM990_DISPLAY_NONE
  67 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  68 {
  69         if (on) {
  70                 /* enable LCD-Latches
  71                  * power on LCD
  72                  */
  73                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
  74                         PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
  75         } else {
  76                 /* disable LCD-Latches
  77                  * power off LCD
  78                  */
  79                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
  80         }
  81 }
  82 #endif
  83
  84 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
  85 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
  86         .pixclock               = 28000,
  87         .xres                   = 640,
  88         .yres                   = 480,
  89         .bpp                    = 16,
  90         .hsync_len              = 20,
  91         .left_margin            = 103,
  92         .right_margin           = 47,
  93         .vsync_len              = 6,
  94         .upper_margin           = 28,
  95         .lower_margin           = 5,
  96         .sync                   = 0,
  97         .cmap_greyscale         = 0,
  98 };
  99
 100 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 101         .modes                  = &fb_info_sharp_lq084v1dg21,
 102         .num_modes              = 1,
 103         .lccr0                  = LCCR0_PAS,
 104         .lccr3                  = LCCR3_PCP,
 105         .pxafb_lcd_power        = pcm990_lcd_power,
 106 };
 107 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 108 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 109         .pixclock               = 39720,
 110         .xres                   = 640,
 111         .yres                   = 480,
 112         .bpp                    = 16,
 113         .hsync_len              = 32,
 114         .left_margin            = 16,
 115         .right_margin           = 48,
 116         .vsync_len              = 2,
 117         .upper_margin           = 12,
 118         .lower_margin           = 17,
 119         .sync                   = 0,
 120         .cmap_greyscale         = 0,
 121 };
 122
 123 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 124         .modes                  = &fb_info_nec_nl6448bc20_18d,
 125         .num_modes              = 1,
 126         .lccr0                  = LCCR0_Act,
 127         .lccr3                  = LCCR3_PixFlEdg,
 128         .pxafb_lcd_power        = pcm990_lcd_power,
 129 };
 130 #endif
 131
 132 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 133         .pwm_id         = 0,
 134         .max_brightness = 1023,
 135         .dft_brightness = 1023,
 136         .pwm_period_ns  = 78770,
 137 };
 138
 139 static struct platform_device pcm990_backlight_device = {
 140         .name           = "pwm-backlight",
 141         .dev            = {
 142                 .parent = &pxa27x_device_pwm0.dev,
 143                 .platform_data = &pcm990_backlight_data,
 144         },
 145 };
 146
 147 /*
 148  * The PCM-990 development baseboard uses PCM-027's hardware in the
 149  * following way:
 150  *
 151  * - LCD support is in use
 152  *  - GPIO16 is output for back light on/off with PWM
 153  *  - GPIO58 ... GPIO73 are outputs for display data
 154  *  - GPIO74 is output output for LCDFCLK
 155  *  - GPIO75 is output for LCDLCLK
 156  *  - GPIO76 is output for LCDPCLK
 157  *  - GPIO77 is output for LCDBIAS
 158  * - MMC support is in use
 159  *  - GPIO32 is output for MMCCLK
 160  *  - GPIO92 is MMDAT0
 161  *  - GPIO109 is MMDAT1
 162  *  - GPIO110 is MMCS0
 163  *  - GPIO111 is MMCS1
 164  *  - GPIO112 is MMCMD
 165  * - IDE/CF card is in use
 166  *  - GPIO48 is output /POE
 167  *  - GPIO49 is output /PWE
 168  *  - GPIO50 is output /PIOR
 169  *  - GPIO51 is output /PIOW
 170  *  - GPIO54 is output /PCE2
 171  *  - GPIO55 is output /PREG
 172  *  - GPIO56 is input /PWAIT
 173  *  - GPIO57 is output /PIOS16
 174  *  - GPIO79 is output PSKTSEL
 175  *  - GPIO85 is output /PCE1
 176  * - FFUART is in use
 177  *  - GPIO34 is input FFRXD
 178  *  - GPIO35 is input FFCTS
 179  *  - GPIO36 is input FFDCD
 180  *  - GPIO37 is input FFDSR
 181  *  - GPIO38 is input FFRI
 182  *  - GPIO39 is output FFTXD
 183  *  - GPIO40 is output FFDTR
 184  *  - GPIO41 is output FFRTS
 185  * - BTUART is in use
 186  *  - GPIO42 is input BTRXD
 187  *  - GPIO43 is output BTTXD
 188  *  - GPIO44 is input BTCTS
 189  *  - GPIO45 is output BTRTS
 190  * - IRUART is in use
 191  *  - GPIO46 is input STDRXD
 192  *  - GPIO47 is output STDTXD
 193  * - AC97 is in use*)
 194  *  - GPIO28 is input AC97CLK
 195  *  - GPIO29 is input AC97DatIn
 196  *  - GPIO30 is output AC97DatO
 197  *  - GPIO31 is output AC97SYNC
 198  *  - GPIO113 is output AC97_RESET
 199  * - SSP is in use
 200  *  - GPIO23 is output SSPSCLK
 201  *  - GPIO24 is output chip select to Max7301
 202  *  - GPIO25 is output SSPTXD
 203  *  - GPIO26 is input SSPRXD
 204  *  - GPIO27 is input for Max7301 IRQ
 205  *  - GPIO53 is input SSPSYSCLK
 206  * - SSP3 is in use
 207  *  - GPIO81 is output SSPTXD3
 208  *  - GPIO82 is input SSPRXD3
 209  *  - GPIO83 is output SSPSFRM
 210  *  - GPIO84 is output SSPCLK3
 211  *
 212  * Otherwise claimed GPIOs:
 213  * GPIO1 -> IRQ from user switch
 214  * GPIO9 -> IRQ from power management
 215  * GPIO10 -> IRQ from WML9712 AC97 controller
 216  * GPIO11 -> IRQ from IDE controller
 217  * GPIO12 -> IRQ from CF controller
 218  * GPIO13 -> IRQ from CF controller
 219  * GPIO14 -> GPIO free
 220  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 221  * GPIO19 -> GPIO free
 222  * GPIO20 -> /SDCS2
 223  * GPIO21 -> /CS3 PC card socket select
 224  * GPIO33 -> /CS5  network controller select
 225  * GPIO78 -> /CS2  (16 bit wide data path)
 226  * GPIO80 -> /CS4  (16 bit wide data path)
 227  * GPIO86 -> GPIO free
 228  * GPIO87 -> GPIO free
 229  * GPIO90 -> LED0 on CPU module
 230  * GPIO91 -> LED1 on CPI module
 231  * GPIO117 -> SCL
 232  * GPIO118 -> SDA
 233  */
 234
 235 static unsigned long pcm990_irq_enabled;
 236
 237 static void pcm990_mask_ack_irq(unsigned int irq)
 238 {
 239         int pcm990_irq = (irq - PCM027_IRQ(0));
 240         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
 241 }
 242
 243 static void pcm990_unmask_irq(unsigned int irq)
 244 {
 245         int pcm990_irq = (irq - PCM027_IRQ(0));
 246         /* the irq can be acknowledged only if deasserted, so it's done here */
 247         PCM990_INTSETCLR |= 1 << pcm990_irq;
 248         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
 249 }
 250
 251 static struct irq_chip pcm990_irq_chip = {
 252         .mask_ack       = pcm990_mask_ack_irq,
 253         .unmask         = pcm990_unmask_irq,
 254 };
 255
 256 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
 257 {
 258         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 259
 260         do {
 261                 GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
 262                                         GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
 263                 if (likely(pending)) {
 264                         irq = PCM027_IRQ(0) + __ffs(pending);
 265                         generic_handle_irq(irq);
 266                 }
 267                 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
 268         } while (pending);
 269 }
 270
 271 static void __init pcm990_init_irq(void)
 272 {
 273         int irq;
 274
 275         /* setup extra PCM990 irqs */
 276         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 277                 set_irq_chip(irq, &pcm990_irq_chip);
 278                 set_irq_handler(irq, handle_level_irq);
 279                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 280         }
 281
 282         PCM990_INTMSKENA = 0x00;        /* disable all Interrupts */
 283         PCM990_INTSETCLR = 0xFF;
 284
 285         set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 286         set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 287 }
 288
 289 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 290                         void *data)
 291 {
 292         int err;
 293
 294         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
 295                              "MMC card detect", data);
 296         if (err)
 297                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 298                                 "card detect IRQ\n");
 299
 300         return err;
 301 }
 302
 303 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 304 {
 305         struct pxamci_platform_data *p_d = dev->platform_data;
 306
 307         if ((1 << vdd) & p_d->ocr_mask)
 308                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 309                                                 PCM990_CTRL_MMC2PWR;
 310         else
 311                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
 312                                                 ~PCM990_CTRL_MMC2PWR;
 313 }
 314
 315 static void pcm990_mci_exit(struct device *dev, void *data)
 316 {
 317         free_irq(PCM027_MMCDET_IRQ, data);
 318 }
 319
 320 #define MSECS_PER_JIFFY (1000/HZ)
 321
 322 static struct pxamci_platform_data pcm990_mci_platform_data = {
 323         .detect_delay   = 250 / MSECS_PER_JIFFY,
 324         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 325         .init           = pcm990_mci_init,
 326         .setpower       = pcm990_mci_setpower,
 327         .exit           = pcm990_mci_exit,
 328 };
 329
 330 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 331         .port_mode      = PMM_PERPORT_MODE,
 332         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 333         .power_on_delay = 10,
 334 };
 335
 336 /*
 337  * PXA27x Camera specific stuff
 338  */
 339 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 340 static unsigned long pcm990_camera_pin_config[] = {
 341         /* CIF */
 342         GPIO98_CIF_DD_0,
 343         GPIO105_CIF_DD_1,
 344         GPIO104_CIF_DD_2,
 345         GPIO103_CIF_DD_3,
 346         GPIO95_CIF_DD_4,
 347         GPIO94_CIF_DD_5,
 348         GPIO93_CIF_DD_6,
 349         GPIO108_CIF_DD_7,
 350         GPIO107_CIF_DD_8,
 351         GPIO106_CIF_DD_9,
 352         GPIO42_CIF_MCLK,
 353         GPIO45_CIF_PCLK,
 354         GPIO43_CIF_FV,
 355         GPIO44_CIF_LV,
 356 };
 357
 358 static int pcm990_pxacamera_init(struct device *dev)
 359 {
 360         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
 361         return 0;
 362 }
 363
 364 /*
 365  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 366  *      MCLK_EN:        Master clock is generated by PXA
 367  *      PCP:            Data sampled on the falling edge of pixel clock
 368  */
 369 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 370         .init   = pcm990_pxacamera_init,
 371         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 372                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 373         .mclk_10khz = 1000,
 374 };
 375
 376 #include <linux/i2c/pca953x.h>
 377
 378 static struct pca953x_platform_data pca9536_data = {
 379         .gpio_base      = NR_BUILTIN_GPIO + 1,
 380 };
 381
 382 static struct soc_camera_link iclink[] = {
 383         {
 384                 .bus_id = 0, /* Must match with the camera ID above */
 385                 .gpio   = NR_BUILTIN_GPIO + 1,
 386         }, {
 387                 .bus_id = 0, /* Must match with the camera ID above */
 388         }
 389 };
 390
 391 /* Board I2C devices. */
 392 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 393         {
 394                 /* Must initialize before the camera(s) */
 395                 I2C_BOARD_INFO("pca9536", 0x41),
 396                 .platform_data = &pca9536_data,
 397         }, {
 398                 I2C_BOARD_INFO("mt9v022", 0x48),
 399                 .platform_data = &iclink[0], /* With extender */
 400         }, {
 401                 I2C_BOARD_INFO("mt9m001", 0x5d),
 402                 .platform_data = &iclink[0], /* With extender */
 403         },
 404 };
 405 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 406
 407 /*
 408  * enable generic access to the base board control CPLDs U6 and U7
 409  */
 410 static struct map_desc pcm990_io_desc[] __initdata = {
 411         {
 412                 .virtual        = PCM990_CTRL_BASE,
 413                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
 414                 .length         = PCM990_CTRL_SIZE,
 415                 .type           = MT_DEVICE     /* CPLD */
 416         }, {
 417                 .virtual        = PCM990_CF_PLD_BASE,
 418                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
 419                 .length         = PCM990_CF_PLD_SIZE,
 420                 .type           = MT_DEVICE     /* CPLD */
 421         }
 422 };
 423
 424 /*
 425  * system init for baseboard usage. Will be called by pcm027 init.
 426  *
 427  * Add platform devices present on this baseboard and init
 428  * them from CPU side as far as required to use them later on
 429  */
 430 void __init pcm990_baseboard_init(void)
 431 {
 432         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 433
 434         /* register CPLD access */
 435         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
 436
 437         /* register CPLD's IRQ controller */
 438         pcm990_init_irq();
 439
 440 #ifndef CONFIG_PCM990_DISPLAY_NONE
 441         set_pxa_fb_info(&pcm990_fbinfo);
 442 #endif
 443         platform_device_register(&pcm990_backlight_device);
 444
 445         /* MMC */
 446         pxa_set_mci_info(&pcm990_mci_platform_data);
 447
 448         /* USB host */
 449         pxa_set_ohci_info(&pcm990_ohci_platform_data);
 450
 451         pxa_set_i2c_info(NULL);
 452         pxa_set_ac97_info(NULL);
 453
 454 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 455         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
 456
 457         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
 458 #endif
 459
 460         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
 461 }