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/i2c/pxa-i2c.h>
27 #include <linux/pwm_backlight.h>
28
29 #include <media/soc_camera.h>
30
31 #include <asm/gpio.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
44 static 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
pcm990_lcd_power(int on,struct fb_var_screeninfo * var)76 static 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)
94 static 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
109 static 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)
116 struct 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
131 static 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
139 static 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
146 static 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
242 static unsigned long pcm990_irq_enabled;
243
pcm990_mask_ack_irq(struct irq_data * d)244 static void pcm990_mask_ack_irq(struct irq_data *d)
245 {
246 int pcm990_irq = (d->irq - PCM027_IRQ(0));
247 PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
248 }
249
pcm990_unmask_irq(struct irq_data * d)250 static void pcm990_unmask_irq(struct irq_data *d)
251 {
252 int pcm990_irq = (d->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
258 static struct irq_chip pcm990_irq_chip = {
259 .irq_mask_ack = pcm990_mask_ack_irq,
260 .irq_unmask = pcm990_unmask_irq,
261 };
262
pcm990_irq_handler(unsigned int irq,struct irq_desc * desc)263 static 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 /* clear our parent IRQ */
269 desc->irq_data.chip->irq_ack(&desc->irq_data);
270 if (likely(pending)) {
271 irq = PCM027_IRQ(0) + __ffs(pending);
272 generic_handle_irq(irq);
273 }
274 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
275 } while (pending);
276 }
277
pcm990_init_irq(void)278 static void __init pcm990_init_irq(void)
279 {
280 int irq;
281
282 /* setup extra PCM990 irqs */
283 for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
284 irq_set_chip_and_handler(irq, &pcm990_irq_chip,
285 handle_level_irq);
286 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
287 }
288
289 PCM990_INTMSKENA = 0x00; /* disable all Interrupts */
290 PCM990_INTSETCLR = 0xFF;
291
292 irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
293 irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
294 }
295
pcm990_mci_init(struct device * dev,irq_handler_t mci_detect_int,void * data)296 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
297 void *data)
298 {
299 int err;
300
301 err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
302 "MMC card detect", data);
303 if (err)
304 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
305 "card detect IRQ\n");
306
307 return err;
308 }
309
pcm990_mci_setpower(struct device * dev,unsigned int vdd)310 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
311 {
312 struct pxamci_platform_data *p_d = dev->platform_data;
313
314 if ((1 << vdd) & p_d->ocr_mask)
315 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
316 PCM990_CTRL_MMC2PWR;
317 else
318 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
319 ~PCM990_CTRL_MMC2PWR;
320 }
321
pcm990_mci_exit(struct device * dev,void * data)322 static void pcm990_mci_exit(struct device *dev, void *data)
323 {
324 free_irq(PCM027_MMCDET_IRQ, data);
325 }
326
327 #define MSECS_PER_JIFFY (1000/HZ)
328
329 static struct pxamci_platform_data pcm990_mci_platform_data = {
330 .detect_delay_ms = 250,
331 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
332 .init = pcm990_mci_init,
333 .setpower = pcm990_mci_setpower,
334 .exit = pcm990_mci_exit,
335 .gpio_card_detect = -1,
336 .gpio_card_ro = -1,
337 .gpio_power = -1,
338 };
339
340 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
341 .port_mode = PMM_PERPORT_MODE,
342 .flags = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
343 .power_on_delay = 10,
344 };
345
346 /*
347 * PXA27x Camera specific stuff
348 */
349 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
350 static unsigned long pcm990_camera_pin_config[] = {
351 /* CIF */
352 GPIO98_CIF_DD_0,
353 GPIO105_CIF_DD_1,
354 GPIO104_CIF_DD_2,
355 GPIO103_CIF_DD_3,
356 GPIO95_CIF_DD_4,
357 GPIO94_CIF_DD_5,
358 GPIO93_CIF_DD_6,
359 GPIO108_CIF_DD_7,
360 GPIO107_CIF_DD_8,
361 GPIO106_CIF_DD_9,
362 GPIO42_CIF_MCLK,
363 GPIO45_CIF_PCLK,
364 GPIO43_CIF_FV,
365 GPIO44_CIF_LV,
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 .flags = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
375 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
376 .mclk_10khz = 1000,
377 };
378
379 #include <linux/i2c/pca953x.h>
380
381 static struct pca953x_platform_data pca9536_data = {
382 .gpio_base = NR_BUILTIN_GPIO,
383 };
384
385 static int gpio_bus_switch = -EINVAL;
386
pcm990_camera_set_bus_param(struct soc_camera_link * link,unsigned long flags)387 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
388 unsigned long flags)
389 {
390 if (gpio_bus_switch < 0) {
391 if (flags == SOCAM_DATAWIDTH_10)
392 return 0;
393 else
394 return -EINVAL;
395 }
396
397 if (flags & SOCAM_DATAWIDTH_8)
398 gpio_set_value(gpio_bus_switch, 1);
399 else
400 gpio_set_value(gpio_bus_switch, 0);
401
402 return 0;
403 }
404
pcm990_camera_query_bus_param(struct soc_camera_link * link)405 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
406 {
407 int ret;
408
409 if (gpio_bus_switch < 0) {
410 ret = gpio_request(NR_BUILTIN_GPIO, "camera");
411 if (!ret) {
412 gpio_bus_switch = NR_BUILTIN_GPIO;
413 gpio_direction_output(gpio_bus_switch, 0);
414 }
415 }
416
417 if (gpio_bus_switch >= 0)
418 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
419 else
420 return SOCAM_DATAWIDTH_10;
421 }
422
pcm990_camera_free_bus(struct soc_camera_link * link)423 static void pcm990_camera_free_bus(struct soc_camera_link *link)
424 {
425 if (gpio_bus_switch < 0)
426 return;
427
428 gpio_free(gpio_bus_switch);
429 gpio_bus_switch = -EINVAL;
430 }
431
432 /* Board I2C devices. */
433 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
434 {
435 /* Must initialize before the camera(s) */
436 I2C_BOARD_INFO("pca9536", 0x41),
437 .platform_data = &pca9536_data,
438 },
439 };
440
441 static struct i2c_board_info pcm990_camera_i2c[] = {
442 {
443 I2C_BOARD_INFO("mt9v022", 0x48),
444 }, {
445 I2C_BOARD_INFO("mt9m001", 0x5d),
446 },
447 };
448
449 static struct soc_camera_link iclink[] = {
450 {
451 .bus_id = 0, /* Must match with the camera ID */
452 .board_info = &pcm990_camera_i2c[0],
453 .i2c_adapter_id = 0,
454 .query_bus_param = pcm990_camera_query_bus_param,
455 .set_bus_param = pcm990_camera_set_bus_param,
456 .free_bus = pcm990_camera_free_bus,
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 },
465 };
466
467 static struct platform_device pcm990_camera[] = {
468 {
469 .name = "soc-camera-pdrv",
470 .id = 0,
471 .dev = {
472 .platform_data = &iclink[0],
473 },
474 }, {
475 .name = "soc-camera-pdrv",
476 .id = 1,
477 .dev = {
478 .platform_data = &iclink[1],
479 },
480 },
481 };
482 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
483
484 /*
485 * enable generic access to the base board control CPLDs U6 and U7
486 */
487 static struct map_desc pcm990_io_desc[] __initdata = {
488 {
489 .virtual = PCM990_CTRL_BASE,
490 .pfn = __phys_to_pfn(PCM990_CTRL_PHYS),
491 .length = PCM990_CTRL_SIZE,
492 .type = MT_DEVICE /* CPLD */
493 }, {
494 .virtual = PCM990_CF_PLD_BASE,
495 .pfn = __phys_to_pfn(PCM990_CF_PLD_PHYS),
496 .length = PCM990_CF_PLD_SIZE,
497 .type = MT_DEVICE /* CPLD */
498 }
499 };
500
501 /*
502 * system init for baseboard usage. Will be called by pcm027 init.
503 *
504 * Add platform devices present on this baseboard and init
505 * them from CPU side as far as required to use them later on
506 */
pcm990_baseboard_init(void)507 void __init pcm990_baseboard_init(void)
508 {
509 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
510
511 /* register CPLD access */
512 iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
513
514 /* register CPLD's IRQ controller */
515 pcm990_init_irq();
516
517 #ifndef CONFIG_PCM990_DISPLAY_NONE
518 pxa_set_fb_info(NULL, &pcm990_fbinfo);
519 #endif
520 platform_device_register(&pcm990_backlight_device);
521
522 /* MMC */
523 pxa_set_mci_info(&pcm990_mci_platform_data);
524
525 /* USB host */
526 pxa_set_ohci_info(&pcm990_ohci_platform_data);
527
528 pxa_set_i2c_info(NULL);
529 pxa_set_ac97_info(NULL);
530
531 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
532 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
533 pxa_set_camera_info(&pcm990_pxacamera_platform_data);
534
535 i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
536
537 platform_device_register(&pcm990_camera[0]);
538 platform_device_register(&pcm990_camera[1]);
539 #endif
540
541 printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
542 }
543