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 <plat/i2c.h> 32#include <mach/camera.h> 33#include <asm/mach/map.h> 34#include <mach/pxa27x.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 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 69/* 70 * pcm990_lcd_power - control power supply to the LCD 71 * @on: 0 = switch off, 1 = switch on 72 * 73 * Called by the pxafb driver 74 */ 75#ifndef CONFIG_PCM990_DISPLAY_NONE 76static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var) 77{ 78 if (on) { 79 /* enable LCD-Latches 80 * power on LCD 81 */ 82 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 83 PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON; 84 } else { 85 /* disable LCD-Latches 86 * power off LCD 87 */ 88 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00; 89 } 90} 91#endif 92 93#if defined(CONFIG_PCM990_DISPLAY_SHARP) 94static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = { 95 .pixclock = 28000, 96 .xres = 640, 97 .yres = 480, 98 .bpp = 16, 99 .hsync_len = 20, 100 .left_margin = 103, 101 .right_margin = 47, 102 .vsync_len = 6, 103 .upper_margin = 28, 104 .lower_margin = 5, 105 .sync = 0, 106 .cmap_greyscale = 0, 107}; 108 109static struct pxafb_mach_info pcm990_fbinfo __initdata = { 110 .modes = &fb_info_sharp_lq084v1dg21, 111 .num_modes = 1, 112 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, 113 .pxafb_lcd_power = pcm990_lcd_power, 114}; 115#elif defined(CONFIG_PCM990_DISPLAY_NEC) 116struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = { 117 .pixclock = 39720, 118 .xres = 640, 119 .yres = 480, 120 .bpp = 16, 121 .hsync_len = 32, 122 .left_margin = 16, 123 .right_margin = 48, 124 .vsync_len = 2, 125 .upper_margin = 12, 126 .lower_margin = 17, 127 .sync = 0, 128 .cmap_greyscale = 0, 129}; 130 131static struct pxafb_mach_info pcm990_fbinfo __initdata = { 132 .modes = &fb_info_nec_nl6448bc20_18d, 133 .num_modes = 1, 134 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, 135 .pxafb_lcd_power = pcm990_lcd_power, 136}; 137#endif 138 139static struct platform_pwm_backlight_data pcm990_backlight_data = { 140 .pwm_id = 0, 141 .max_brightness = 1023, 142 .dft_brightness = 1023, 143 .pwm_period_ns = 78770, 144}; 145 146static struct platform_device pcm990_backlight_device = { 147 .name = "pwm-backlight", 148 .dev = { 149 .parent = &pxa27x_device_pwm0.dev, 150 .platform_data = &pcm990_backlight_data, 151 }, 152}; 153 154/* 155 * The PCM-990 development baseboard uses PCM-027's hardware in the 156 * following way: 157 * 158 * - LCD support is in use 159 * - GPIO16 is output for back light on/off with PWM 160 * - GPIO58 ... GPIO73 are outputs for display data 161 * - GPIO74 is output output for LCDFCLK 162 * - GPIO75 is output for LCDLCLK 163 * - GPIO76 is output for LCDPCLK 164 * - GPIO77 is output for LCDBIAS 165 * - MMC support is in use 166 * - GPIO32 is output for MMCCLK 167 * - GPIO92 is MMDAT0 168 * - GPIO109 is MMDAT1 169 * - GPIO110 is MMCS0 170 * - GPIO111 is MMCS1 171 * - GPIO112 is MMCMD 172 * - IDE/CF card is in use 173 * - GPIO48 is output /POE 174 * - GPIO49 is output /PWE 175 * - GPIO50 is output /PIOR 176 * - GPIO51 is output /PIOW 177 * - GPIO54 is output /PCE2 178 * - GPIO55 is output /PREG 179 * - GPIO56 is input /PWAIT 180 * - GPIO57 is output /PIOS16 181 * - GPIO79 is output PSKTSEL 182 * - GPIO85 is output /PCE1 183 * - FFUART is in use 184 * - GPIO34 is input FFRXD 185 * - GPIO35 is input FFCTS 186 * - GPIO36 is input FFDCD 187 * - GPIO37 is input FFDSR 188 * - GPIO38 is input FFRI 189 * - GPIO39 is output FFTXD 190 * - GPIO40 is output FFDTR 191 * - GPIO41 is output FFRTS 192 * - BTUART is in use 193 * - GPIO42 is input BTRXD 194 * - GPIO43 is output BTTXD 195 * - GPIO44 is input BTCTS 196 * - GPIO45 is output BTRTS 197 * - IRUART is in use 198 * - GPIO46 is input STDRXD 199 * - GPIO47 is output STDTXD 200 * - AC97 is in use*) 201 * - GPIO28 is input AC97CLK 202 * - GPIO29 is input AC97DatIn 203 * - GPIO30 is output AC97DatO 204 * - GPIO31 is output AC97SYNC 205 * - GPIO113 is output AC97_RESET 206 * - SSP is in use 207 * - GPIO23 is output SSPSCLK 208 * - GPIO24 is output chip select to Max7301 209 * - GPIO25 is output SSPTXD 210 * - GPIO26 is input SSPRXD 211 * - GPIO27 is input for Max7301 IRQ 212 * - GPIO53 is input SSPSYSCLK 213 * - SSP3 is in use 214 * - GPIO81 is output SSPTXD3 215 * - GPIO82 is input SSPRXD3 216 * - GPIO83 is output SSPSFRM 217 * - GPIO84 is output SSPCLK3 218 * 219 * Otherwise claimed GPIOs: 220 * GPIO1 -> IRQ from user switch 221 * GPIO9 -> IRQ from power management 222 * GPIO10 -> IRQ from WML9712 AC97 controller 223 * GPIO11 -> IRQ from IDE controller 224 * GPIO12 -> IRQ from CF controller 225 * GPIO13 -> IRQ from CF controller 226 * GPIO14 -> GPIO free 227 * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path) 228 * GPIO19 -> GPIO free 229 * GPIO20 -> /SDCS2 230 * GPIO21 -> /CS3 PC card socket select 231 * GPIO33 -> /CS5 network controller select 232 * GPIO78 -> /CS2 (16 bit wide data path) 233 * GPIO80 -> /CS4 (16 bit wide data path) 234 * GPIO86 -> GPIO free 235 * GPIO87 -> GPIO free 236 * GPIO90 -> LED0 on CPU module 237 * GPIO91 -> LED1 on CPI module 238 * GPIO117 -> SCL 239 * GPIO118 -> SDA 240 */ 241 242static unsigned long pcm990_irq_enabled; 243 244static void pcm990_mask_ack_irq(unsigned int irq) 245{ 246 int pcm990_irq = (irq - PCM027_IRQ(0)); 247 PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq)); 248} 249 250static void pcm990_unmask_irq(unsigned int irq) 251{ 252 int pcm990_irq = (irq - PCM027_IRQ(0)); 253 /* the irq can be acknowledged only if deasserted, so it's done here */ 254 PCM990_INTSETCLR |= 1 << pcm990_irq; 255 PCM990_INTMSKENA = (pcm990_irq_enabled |= (1 << pcm990_irq)); 256} 257 258static struct irq_chip pcm990_irq_chip = { 259 .mask_ack = pcm990_mask_ack_irq, 260 .unmask = pcm990_unmask_irq, 261}; 262 263static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc) 264{ 265 unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled; 266 267 do { 268 desc->chip->ack(irq); /* clear our parent IRQ */ 269 if (likely(pending)) { 270 irq = PCM027_IRQ(0) + __ffs(pending); 271 generic_handle_irq(irq); 272 } 273 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled; 274 } while (pending); 275} 276 277static void __init pcm990_init_irq(void) 278{ 279 int irq; 280 281 /* setup extra PCM990 irqs */ 282 for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) { 283 set_irq_chip(irq, &pcm990_irq_chip); 284 set_irq_handler(irq, handle_level_irq); 285 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); 286 } 287 288 PCM990_INTMSKENA = 0x00; /* disable all Interrupts */ 289 PCM990_INTSETCLR = 0xFF; 290 291 set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler); 292 set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE); 293} 294 295static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int, 296 void *data) 297{ 298 int err; 299 300 err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED, 301 "MMC card detect", data); 302 if (err) 303 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC " 304 "card detect IRQ\n"); 305 306 return err; 307} 308 309static void pcm990_mci_setpower(struct device *dev, unsigned int vdd) 310{ 311 struct pxamci_platform_data *p_d = dev->platform_data; 312 313 if ((1 << vdd) & p_d->ocr_mask) 314 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) = 315 PCM990_CTRL_MMC2PWR; 316 else 317 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) = 318 ~PCM990_CTRL_MMC2PWR; 319} 320 321static void pcm990_mci_exit(struct device *dev, void *data) 322{ 323 free_irq(PCM027_MMCDET_IRQ, data); 324} 325 326#define MSECS_PER_JIFFY (1000/HZ) 327 328static struct pxamci_platform_data pcm990_mci_platform_data = { 329 .detect_delay_ms = 250, 330 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, 331 .init = pcm990_mci_init, 332 .setpower = pcm990_mci_setpower, 333 .exit = pcm990_mci_exit, 334 .gpio_card_detect = -1, 335 .gpio_card_ro = -1, 336 .gpio_power = -1, 337}; 338 339static struct pxaohci_platform_data pcm990_ohci_platform_data = { 340 .port_mode = PMM_PERPORT_MODE, 341 .flags = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW, 342 .power_on_delay = 10, 343}; 344 345/* 346 * PXA27x Camera specific stuff 347 */ 348#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE) 349static unsigned long pcm990_camera_pin_config[] = { 350 /* CIF */ 351 GPIO98_CIF_DD_0, 352 GPIO105_CIF_DD_1, 353 GPIO104_CIF_DD_2, 354 GPIO103_CIF_DD_3, 355 GPIO95_CIF_DD_4, 356 GPIO94_CIF_DD_5, 357 GPIO93_CIF_DD_6, 358 GPIO108_CIF_DD_7, 359 GPIO107_CIF_DD_8, 360 GPIO106_CIF_DD_9, 361 GPIO42_CIF_MCLK, 362 GPIO45_CIF_PCLK, 363 GPIO43_CIF_FV, 364 GPIO44_CIF_LV, 365}; 366 367/* 368 * CICR4: PCLK_EN: Pixel clock is supplied by the sensor 369 * MCLK_EN: Master clock is generated by PXA 370 * PCP: Data sampled on the falling edge of pixel clock 371 */ 372struct pxacamera_platform_data pcm990_pxacamera_platform_data = { 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 380static struct pca953x_platform_data pca9536_data = { 381 .gpio_base = NR_BUILTIN_GPIO, 382}; 383 384static int gpio_bus_switch = -EINVAL; 385 386static int pcm990_camera_set_bus_param(struct soc_camera_link *link, 387 unsigned long flags) 388{ 389 if (gpio_bus_switch < 0) { 390 if (flags == SOCAM_DATAWIDTH_10) 391 return 0; 392 else 393 return -EINVAL; 394 } 395 396 if (flags & SOCAM_DATAWIDTH_8) 397 gpio_set_value(gpio_bus_switch, 1); 398 else 399 gpio_set_value(gpio_bus_switch, 0); 400 401 return 0; 402} 403 404static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link) 405{ 406 int ret; 407 408 if (gpio_bus_switch < 0) { 409 ret = gpio_request(NR_BUILTIN_GPIO, "camera"); 410 if (!ret) { 411 gpio_bus_switch = NR_BUILTIN_GPIO; 412 gpio_direction_output(gpio_bus_switch, 0); 413 } 414 } 415 416 if (gpio_bus_switch >= 0) 417 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10; 418 else 419 return SOCAM_DATAWIDTH_10; 420} 421 422static void pcm990_camera_free_bus(struct soc_camera_link *link) 423{ 424 if (gpio_bus_switch < 0) 425 return; 426 427 gpio_free(gpio_bus_switch); 428 gpio_bus_switch = -EINVAL; 429} 430 431/* Board I2C devices. */ 432static struct i2c_board_info __initdata pcm990_i2c_devices[] = { 433 { 434 /* Must initialize before the camera(s) */ 435 I2C_BOARD_INFO("pca9536", 0x41), 436 .platform_data = &pca9536_data, 437 }, 438}; 439 440static struct i2c_board_info pcm990_camera_i2c[] = { 441 { 442 I2C_BOARD_INFO("mt9v022", 0x48), 443 }, { 444 I2C_BOARD_INFO("mt9m001", 0x5d), 445 }, 446}; 447 448static struct soc_camera_link iclink[] = { 449 { 450 .bus_id = 0, /* Must match with the camera ID */ 451 .board_info = &pcm990_camera_i2c[0], 452 .i2c_adapter_id = 0, 453 .query_bus_param = pcm990_camera_query_bus_param, 454 .set_bus_param = pcm990_camera_set_bus_param, 455 .free_bus = pcm990_camera_free_bus, 456 .module_name = "mt9v022", 457 }, { 458 .bus_id = 0, /* Must match with the camera ID */ 459 .board_info = &pcm990_camera_i2c[1], 460 .i2c_adapter_id = 0, 461 .query_bus_param = pcm990_camera_query_bus_param, 462 .set_bus_param = pcm990_camera_set_bus_param, 463 .free_bus = pcm990_camera_free_bus, 464 .module_name = "mt9m001", 465 }, 466}; 467 468static struct platform_device pcm990_camera[] = { 469 { 470 .name = "soc-camera-pdrv", 471 .id = 0, 472 .dev = { 473 .platform_data = &iclink[0], 474 }, 475 }, { 476 .name = "soc-camera-pdrv", 477 .id = 1, 478 .dev = { 479 .platform_data = &iclink[1], 480 }, 481 }, 482}; 483#endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */ 484 485/* 486 * enable generic access to the base board control CPLDs U6 and U7 487 */ 488static struct map_desc pcm990_io_desc[] __initdata = { 489 { 490 .virtual = PCM990_CTRL_BASE, 491 .pfn = __phys_to_pfn(PCM990_CTRL_PHYS), 492 .length = PCM990_CTRL_SIZE, 493 .type = MT_DEVICE /* CPLD */ 494 }, { 495 .virtual = PCM990_CF_PLD_BASE, 496 .pfn = __phys_to_pfn(PCM990_CF_PLD_PHYS), 497 .length = PCM990_CF_PLD_SIZE, 498 .type = MT_DEVICE /* CPLD */ 499 } 500}; 501 502/* 503 * system init for baseboard usage. Will be called by pcm027 init. 504 * 505 * Add platform devices present on this baseboard and init 506 * them from CPU side as far as required to use them later on 507 */ 508void __init pcm990_baseboard_init(void) 509{ 510 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config)); 511 512 /* register CPLD access */ 513 iotable_init(ARRAY_AND_SIZE(pcm990_io_desc)); 514 515 /* register CPLD's IRQ controller */ 516 pcm990_init_irq(); 517 518#ifndef CONFIG_PCM990_DISPLAY_NONE 519 set_pxa_fb_info(&pcm990_fbinfo); 520#endif 521 platform_device_register(&pcm990_backlight_device); 522 523 /* MMC */ 524 pxa_set_mci_info(&pcm990_mci_platform_data); 525 526 /* USB host */ 527 pxa_set_ohci_info(&pcm990_ohci_platform_data); 528 529 pxa_set_i2c_info(NULL); 530 pxa_set_ac97_info(NULL); 531 532#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE) 533 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config)); 534 pxa_set_camera_info(&pcm990_pxacamera_platform_data); 535 536 i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices)); 537 538 platform_device_register(&pcm990_camera[0]); 539 platform_device_register(&pcm990_camera[1]); 540#endif 541 542 printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n"); 543} 544