arch/arm/mach-pxa/pcm990-baseboard.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
pcm990_cpld_readb
pcm990_cpld_writeb
pcm990_lcd_power
pcm990_mask_ack_irq
pcm990_unmask_irq
pcm990_irq_handler
pcm990_init_irq
pcm990_mci_init
pcm990_mci_setpower
pcm990_mci_exit
pcm990_camera_set_bus_param
pcm990_camera_query_bus_param
pcm990_camera_free_bus
pcm990_baseboard_init
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  arch/arm/mach-pxa/pcm990-baseboard.c
   4  *  Support for the Phytec phyCORE-PXA270 Development Platform (PCM-990).
   5  *
   6  *  Refer
   7  *   http://www.phytec.com/products/rdk/ARM-XScale/phyCORE-XScale-PXA270.html
   8  *  for additional hardware info
   9  *
  10  *  Author:     Juergen Kilb
  11  *  Created:    April 05, 2005
  12  *  Copyright:  Phytec Messtechnik GmbH
  13  *  e-Mail:     armlinux@phytec.de
  14  *
  15  *  based on Intel Mainstone Board
  16  *
  17  *  Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
  18  */
  19 #include <linux/gpio.h>
  20 #include <linux/irq.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/i2c.h>
  23 #include <linux/platform_data/i2c-pxa.h>
  24 #include <linux/pwm.h>
  25 #include <linux/pwm_backlight.h>
  26 
  27 #include <media/i2c/mt9v022.h>
  28 #include <media/soc_camera.h>
  29 
  30 #include <linux/platform_data/media/camera-pxa.h>
  31 #include <asm/mach/map.h>
  32 #include "pxa27x.h"
  33 #include <mach/audio.h>
  34 #include <linux/platform_data/mmc-pxamci.h>
  35 #include <linux/platform_data/usb-ohci-pxa27x.h>
  36 #include "pcm990_baseboard.h"
  37 #include <linux/platform_data/video-pxafb.h>
  38 
  39 #include "devices.h"
  40 #include "generic.h"
  41 
  42 static unsigned long pcm990_pin_config[] __initdata = {
  43         /* MMC */
  44         GPIO32_MMC_CLK,
  45         GPIO112_MMC_CMD,
  46         GPIO92_MMC_DAT_0,
  47         GPIO109_MMC_DAT_1,
  48         GPIO110_MMC_DAT_2,
  49         GPIO111_MMC_DAT_3,
  50         /* USB */
  51         GPIO88_USBH1_PWR,
  52         GPIO89_USBH1_PEN,
  53         /* PWM0 */
  54         GPIO16_PWM0_OUT,
  55 
  56         /* I2C */
  57         GPIO117_I2C_SCL,
  58         GPIO118_I2C_SDA,
  59 
  60         /* AC97 */
  61         GPIO28_AC97_BITCLK,
  62         GPIO29_AC97_SDATA_IN_0,
  63         GPIO30_AC97_SDATA_OUT,
  64         GPIO31_AC97_SYNC,
  65 };
  66 
  67 static void __iomem *pcm990_cpld_base;
  68 
  69 static u8 pcm990_cpld_readb(unsigned int reg)
  70 {
  71         return readb(pcm990_cpld_base + reg);
  72 }
  73 
  74 static void pcm990_cpld_writeb(u8 value, unsigned int reg)
  75 {
  76         writeb(value, pcm990_cpld_base + reg);
  77 }
  78 
  79 /*
  80  * pcm990_lcd_power - control power supply to the LCD
  81  * @on: 0 = switch off, 1 = switch on
  82  *
  83  * Called by the pxafb driver
  84  */
  85 #ifndef CONFIG_PCM990_DISPLAY_NONE
  86 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
  87 {
  88         if (on) {
  89                 /* enable LCD-Latches
  90                  * power on LCD
  91                  */
  92                 pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON,
  93                                 PCM990_CTRL_REG3);
  94         } else {
  95                 /* disable LCD-Latches
  96                  * power off LCD
  97                  */
  98                 pcm990_cpld_writeb(0, PCM990_CTRL_REG3);
  99         }
 100 }
 101 #endif
 102 
 103 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
 104 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
 105         .pixclock               = 28000,
 106         .xres                   = 640,
 107         .yres                   = 480,
 108         .bpp                    = 16,
 109         .hsync_len              = 20,
 110         .left_margin            = 103,
 111         .right_margin           = 47,
 112         .vsync_len              = 6,
 113         .upper_margin           = 28,
 114         .lower_margin           = 5,
 115         .sync                   = 0,
 116         .cmap_greyscale         = 0,
 117 };
 118 
 119 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 120         .modes                  = &fb_info_sharp_lq084v1dg21,
 121         .num_modes              = 1,
 122         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 123         .pxafb_lcd_power        = pcm990_lcd_power,
 124 };
 125 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
 126 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
 127         .pixclock               = 39720,
 128         .xres                   = 640,
 129         .yres                   = 480,
 130         .bpp                    = 16,
 131         .hsync_len              = 32,
 132         .left_margin            = 16,
 133         .right_margin           = 48,
 134         .vsync_len              = 2,
 135         .upper_margin           = 12,
 136         .lower_margin           = 17,
 137         .sync                   = 0,
 138         .cmap_greyscale         = 0,
 139 };
 140 
 141 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
 142         .modes                  = &fb_info_nec_nl6448bc20_18d,
 143         .num_modes              = 1,
 144         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 145         .pxafb_lcd_power        = pcm990_lcd_power,
 146 };
 147 #endif
 148 
 149 static struct pwm_lookup pcm990_pwm_lookup[] = {
 150         PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78770,
 151                    PWM_POLARITY_NORMAL),
 152 };
 153 
 154 static struct platform_pwm_backlight_data pcm990_backlight_data = {
 155         .max_brightness = 1023,
 156         .dft_brightness = 1023,
 157         .enable_gpio    = -1,
 158 };
 159 
 160 static struct platform_device pcm990_backlight_device = {
 161         .name           = "pwm-backlight",
 162         .dev            = {
 163                 .parent = &pxa27x_device_pwm0.dev,
 164                 .platform_data = &pcm990_backlight_data,
 165         },
 166 };
 167 
 168 /*
 169  * The PCM-990 development baseboard uses PCM-027's hardware in the
 170  * following way:
 171  *
 172  * - LCD support is in use
 173  *  - GPIO16 is output for back light on/off with PWM
 174  *  - GPIO58 ... GPIO73 are outputs for display data
 175  *  - GPIO74 is output output for LCDFCLK
 176  *  - GPIO75 is output for LCDLCLK
 177  *  - GPIO76 is output for LCDPCLK
 178  *  - GPIO77 is output for LCDBIAS
 179  * - MMC support is in use
 180  *  - GPIO32 is output for MMCCLK
 181  *  - GPIO92 is MMDAT0
 182  *  - GPIO109 is MMDAT1
 183  *  - GPIO110 is MMCS0
 184  *  - GPIO111 is MMCS1
 185  *  - GPIO112 is MMCMD
 186  * - IDE/CF card is in use
 187  *  - GPIO48 is output /POE
 188  *  - GPIO49 is output /PWE
 189  *  - GPIO50 is output /PIOR
 190  *  - GPIO51 is output /PIOW
 191  *  - GPIO54 is output /PCE2
 192  *  - GPIO55 is output /PREG
 193  *  - GPIO56 is input /PWAIT
 194  *  - GPIO57 is output /PIOS16
 195  *  - GPIO79 is output PSKTSEL
 196  *  - GPIO85 is output /PCE1
 197  * - FFUART is in use
 198  *  - GPIO34 is input FFRXD
 199  *  - GPIO35 is input FFCTS
 200  *  - GPIO36 is input FFDCD
 201  *  - GPIO37 is input FFDSR
 202  *  - GPIO38 is input FFRI
 203  *  - GPIO39 is output FFTXD
 204  *  - GPIO40 is output FFDTR
 205  *  - GPIO41 is output FFRTS
 206  * - BTUART is in use
 207  *  - GPIO42 is input BTRXD
 208  *  - GPIO43 is output BTTXD
 209  *  - GPIO44 is input BTCTS
 210  *  - GPIO45 is output BTRTS
 211  * - IRUART is in use
 212  *  - GPIO46 is input STDRXD
 213  *  - GPIO47 is output STDTXD
 214  * - AC97 is in use*)
 215  *  - GPIO28 is input AC97CLK
 216  *  - GPIO29 is input AC97DatIn
 217  *  - GPIO30 is output AC97DatO
 218  *  - GPIO31 is output AC97SYNC
 219  *  - GPIO113 is output AC97_RESET
 220  * - SSP is in use
 221  *  - GPIO23 is output SSPSCLK
 222  *  - GPIO24 is output chip select to Max7301
 223  *  - GPIO25 is output SSPTXD
 224  *  - GPIO26 is input SSPRXD
 225  *  - GPIO27 is input for Max7301 IRQ
 226  *  - GPIO53 is input SSPSYSCLK
 227  * - SSP3 is in use
 228  *  - GPIO81 is output SSPTXD3
 229  *  - GPIO82 is input SSPRXD3
 230  *  - GPIO83 is output SSPSFRM
 231  *  - GPIO84 is output SSPCLK3
 232  *
 233  * Otherwise claimed GPIOs:
 234  * GPIO1 -> IRQ from user switch
 235  * GPIO9 -> IRQ from power management
 236  * GPIO10 -> IRQ from WML9712 AC97 controller
 237  * GPIO11 -> IRQ from IDE controller
 238  * GPIO12 -> IRQ from CF controller
 239  * GPIO13 -> IRQ from CF controller
 240  * GPIO14 -> GPIO free
 241  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
 242  * GPIO19 -> GPIO free
 243  * GPIO20 -> /SDCS2
 244  * GPIO21 -> /CS3 PC card socket select
 245  * GPIO33 -> /CS5  network controller select
 246  * GPIO78 -> /CS2  (16 bit wide data path)
 247  * GPIO80 -> /CS4  (16 bit wide data path)
 248  * GPIO86 -> GPIO free
 249  * GPIO87 -> GPIO free
 250  * GPIO90 -> LED0 on CPU module
 251  * GPIO91 -> LED1 on CPI module
 252  * GPIO117 -> SCL
 253  * GPIO118 -> SDA
 254  */
 255 
 256 static unsigned long pcm990_irq_enabled;
 257 
 258 static void pcm990_mask_ack_irq(struct irq_data *d)
 259 {
 260         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 261 
 262         pcm990_irq_enabled &= ~(1 << pcm990_irq);
 263 
 264         pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 265 }
 266 
 267 static void pcm990_unmask_irq(struct irq_data *d)
 268 {
 269         int pcm990_irq = (d->irq - PCM027_IRQ(0));
 270         u8 val;
 271 
 272         /* the irq can be acknowledged only if deasserted, so it's done here */
 273 
 274         pcm990_irq_enabled |= (1 << pcm990_irq);
 275 
 276         val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 277         val |= 1 << pcm990_irq;
 278         pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR);
 279 
 280         pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
 281 }
 282 
 283 static struct irq_chip pcm990_irq_chip = {
 284         .irq_mask_ack   = pcm990_mask_ack_irq,
 285         .irq_unmask     = pcm990_unmask_irq,
 286 };
 287 
 288 static void pcm990_irq_handler(struct irq_desc *desc)
 289 {
 290         unsigned int irq;
 291         unsigned long pending;
 292 
 293         pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 294         pending &= pcm990_irq_enabled;
 295 
 296         do {
 297                 /* clear our parent IRQ */
 298                 desc->irq_data.chip->irq_ack(&desc->irq_data);
 299                 if (likely(pending)) {
 300                         irq = PCM027_IRQ(0) + __ffs(pending);
 301                         generic_handle_irq(irq);
 302                 }
 303                 pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
 304                 pending &= pcm990_irq_enabled;
 305         } while (pending);
 306 }
 307 
 308 static void __init pcm990_init_irq(void)
 309 {
 310         int irq;
 311 
 312         /* setup extra PCM990 irqs */
 313         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
 314                 irq_set_chip_and_handler(irq, &pcm990_irq_chip,
 315                                          handle_level_irq);
 316                 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 317         }
 318 
 319         /* disable all Interrupts */
 320         pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA);
 321         pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR);
 322 
 323         irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
 324         irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
 325 }
 326 
 327 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
 328                         void *data)
 329 {
 330         int err;
 331 
 332         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0,
 333                              "MMC card detect", data);
 334         if (err)
 335                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
 336                                 "card detect IRQ\n");
 337 
 338         return err;
 339 }
 340 
 341 static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
 342 {
 343         struct pxamci_platform_data *p_d = dev->platform_data;
 344         u8 val;
 345 
 346         val = pcm990_cpld_readb(PCM990_CTRL_REG5);
 347 
 348         if ((1 << vdd) & p_d->ocr_mask)
 349                 val |= PCM990_CTRL_MMC2PWR;
 350         else
 351                 val &= ~PCM990_CTRL_MMC2PWR;
 352 
 353         pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
 354         return 0;
 355 }
 356 
 357 static void pcm990_mci_exit(struct device *dev, void *data)
 358 {
 359         free_irq(PCM027_MMCDET_IRQ, data);
 360 }
 361 
 362 #define MSECS_PER_JIFFY (1000/HZ)
 363 
 364 static struct pxamci_platform_data pcm990_mci_platform_data = {
 365         .detect_delay_ms        = 250,
 366         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 367         .init                   = pcm990_mci_init,
 368         .setpower               = pcm990_mci_setpower,
 369         .exit                   = pcm990_mci_exit,
 370 };
 371 
 372 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
 373         .port_mode      = PMM_PERPORT_MODE,
 374         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 375         .power_on_delay = 10,
 376 };
 377 
 378 /*
 379  * PXA27x Camera specific stuff
 380  */
 381 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 382 static unsigned long pcm990_camera_pin_config[] = {
 383         /* CIF */
 384         GPIO98_CIF_DD_0,
 385         GPIO105_CIF_DD_1,
 386         GPIO104_CIF_DD_2,
 387         GPIO103_CIF_DD_3,
 388         GPIO95_CIF_DD_4,
 389         GPIO94_CIF_DD_5,
 390         GPIO93_CIF_DD_6,
 391         GPIO108_CIF_DD_7,
 392         GPIO107_CIF_DD_8,
 393         GPIO106_CIF_DD_9,
 394         GPIO42_CIF_MCLK,
 395         GPIO45_CIF_PCLK,
 396         GPIO43_CIF_FV,
 397         GPIO44_CIF_LV,
 398 };
 399 
 400 /*
 401  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
 402  *      MCLK_EN:        Master clock is generated by PXA
 403  *      PCP:            Data sampled on the falling edge of pixel clock
 404  */
 405 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
 406         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
 407                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
 408         .mclk_10khz = 1000,
 409 };
 410 
 411 #include <linux/platform_data/pca953x.h>
 412 
 413 static struct pca953x_platform_data pca9536_data = {
 414         .gpio_base      = PXA_NR_BUILTIN_GPIO,
 415 };
 416 
 417 static int gpio_bus_switch = -EINVAL;
 418 
 419 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
 420                                        unsigned long flags)
 421 {
 422         if (gpio_bus_switch < 0) {
 423                 if (flags == SOCAM_DATAWIDTH_10)
 424                         return 0;
 425                 else
 426                         return -EINVAL;
 427         }
 428 
 429         if (flags & SOCAM_DATAWIDTH_8)
 430                 gpio_set_value_cansleep(gpio_bus_switch, 1);
 431         else
 432                 gpio_set_value_cansleep(gpio_bus_switch, 0);
 433 
 434         return 0;
 435 }
 436 
 437 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
 438 {
 439         int ret;
 440 
 441         if (gpio_bus_switch < 0) {
 442                 ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera");
 443                 if (!ret) {
 444                         gpio_bus_switch = PXA_NR_BUILTIN_GPIO;
 445                         gpio_direction_output(gpio_bus_switch, 0);
 446                 }
 447         }
 448 
 449         if (gpio_bus_switch >= 0)
 450                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
 451         else
 452                 return SOCAM_DATAWIDTH_10;
 453 }
 454 
 455 static void pcm990_camera_free_bus(struct soc_camera_link *link)
 456 {
 457         if (gpio_bus_switch < 0)
 458                 return;
 459 
 460         gpio_free(gpio_bus_switch);
 461         gpio_bus_switch = -EINVAL;
 462 }
 463 
 464 /* Board I2C devices. */
 465 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 466         {
 467                 /* Must initialize before the camera(s) */
 468                 I2C_BOARD_INFO("pca9536", 0x41),
 469                 .platform_data = &pca9536_data,
 470         },
 471 };
 472 
 473 static struct mt9v022_platform_data mt9v022_pdata = {
 474         .y_skip_top = 1,
 475 };
 476 
 477 static struct i2c_board_info pcm990_camera_i2c[] = {
 478         {
 479                 I2C_BOARD_INFO("mt9v022", 0x48),
 480         }, {
 481                 I2C_BOARD_INFO("mt9m001", 0x5d),
 482         },
 483 };
 484 
 485 static struct soc_camera_link iclink[] = {
 486         {
 487                 .bus_id                 = 0, /* Must match with the camera ID */
 488                 .board_info             = &pcm990_camera_i2c[0],
 489                 .priv                   = &mt9v022_pdata,
 490                 .i2c_adapter_id         = 0,
 491                 .query_bus_param        = pcm990_camera_query_bus_param,
 492                 .set_bus_param          = pcm990_camera_set_bus_param,
 493                 .free_bus               = pcm990_camera_free_bus,
 494         }, {
 495                 .bus_id                 = 0, /* Must match with the camera ID */
 496                 .board_info             = &pcm990_camera_i2c[1],
 497                 .i2c_adapter_id         = 0,
 498                 .query_bus_param        = pcm990_camera_query_bus_param,
 499                 .set_bus_param          = pcm990_camera_set_bus_param,
 500                 .free_bus               = pcm990_camera_free_bus,
 501         },
 502 };
 503 
 504 static struct platform_device pcm990_camera[] = {
 505         {
 506                 .name   = "soc-camera-pdrv",
 507                 .id     = 0,
 508                 .dev    = {
 509                         .platform_data = &iclink[0],
 510                 },
 511         }, {
 512                 .name   = "soc-camera-pdrv",
 513                 .id     = 1,
 514                 .dev    = {
 515                         .platform_data = &iclink[1],
 516                 },
 517         },
 518 };
 519 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 520 
 521 /*
 522  * system init for baseboard usage. Will be called by pcm027 init.
 523  *
 524  * Add platform devices present on this baseboard and init
 525  * them from CPU side as far as required to use them later on
 526  */
 527 void __init pcm990_baseboard_init(void)
 528 {
 529         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
 530 
 531         pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE);
 532         if (!pcm990_cpld_base) {
 533                 pr_err("pcm990: failed to ioremap cpld\n");
 534                 return;
 535         }
 536 
 537         /* register CPLD's IRQ controller */
 538         pcm990_init_irq();
 539 
 540 #ifndef CONFIG_PCM990_DISPLAY_NONE
 541         pxa_set_fb_info(NULL, &pcm990_fbinfo);
 542 #endif
 543         pwm_add_table(pcm990_pwm_lookup, ARRAY_SIZE(pcm990_pwm_lookup));
 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 }
/* [<][>][^][v][top][bottom][index][help] */
root/arch/arm/mach-pxa/pcm990-baseboard.c

DEFINITIONS
