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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>
58762e77 25#include <linux/i2c.h>
c0f7edb3 26#include <linux/pwm_backlight.h>
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27
28#include <media/soc_camera.h>
29
30#include <asm/gpio.h>
f0a83701 31#include <plat/i2c.h>
a09e64fb 32#include <mach/camera.h>
2e927b76 33#include <asm/mach/map.h>
51c62982 34#include <mach/pxa27x.h>
a09e64fb
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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>
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40
41#include "devices.h"
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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,
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57
58 /* I2C */
59 GPIO117_I2C_SCL,
60 GPIO118_I2C_SDA,
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61
62 /* AC97 */
63 GPIO28_AC97_BITCLK,
64 GPIO29_AC97_SDATA_IN_0,
65 GPIO30_AC97_SDATA_OUT,
66 GPIO31_AC97_SYNC,
6a566fbb 67};
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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,
9587319b 112 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
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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,
9587319b 134 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
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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};
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153
154/*
c0f7edb3 155 * The PCM-990 development baseboard uses PCM-027's hardware in the
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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 {
669cb51c 268 desc->chip->ack(irq); /* clear our parent IRQ */
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269 if (likely(pending)) {
270 irq = PCM027_IRQ(0) + __ffs(pending);
d8aa0251 271 generic_handle_irq(irq);
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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
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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 = {
f97cab28 329 .detect_delay_ms = 250,
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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,
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337};
338
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339static struct pxaohci_platform_data pcm990_ohci_platform_data = {
340 .port_mode = PMM_PERPORT_MODE,
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341 .flags = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
342 .power_on_delay = 10,
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343};
344
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345/*
346 * PXA27x Camera specific stuff
347 */
348#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
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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
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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 = {
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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 = {
a48dc30d 381 .gpio_base = NR_BUILTIN_GPIO,
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382};
383
594bb46d 384static int gpio_bus_switch = -EINVAL;
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385
386static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
594bb46d 387 unsigned long flags)
d75b1dcc 388{
594bb46d 389 if (gpio_bus_switch < 0) {
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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
594bb46d 408 if (gpio_bus_switch < 0) {
a48dc30d 409 ret = gpio_request(NR_BUILTIN_GPIO, "camera");
d75b1dcc 410 if (!ret) {
a48dc30d 411 gpio_bus_switch = NR_BUILTIN_GPIO;
d75b1dcc 412 gpio_direction_output(gpio_bus_switch, 0);
594bb46d 413 }
58762e77 414 }
d75b1dcc 415
594bb46d 416 if (gpio_bus_switch >= 0)
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417 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
418 else
419 return SOCAM_DATAWIDTH_10;
420}
421
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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
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431/* Board I2C devices. */
432static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
433 {
434 /* Must initialize before the camera(s) */
3760f736 435 I2C_BOARD_INFO("pca9536", 0x41),
58762e77 436 .platform_data = &pca9536_data,
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437 },
438};
439
440static struct i2c_board_info pcm990_camera_i2c[] = {
441 {
58762e77 442 I2C_BOARD_INFO("mt9v022", 0x48),
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443 }, {
444 I2C_BOARD_INFO("mt9m001", 0x5d),
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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,
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456 }, {
457 .bus_id = 0, /* Must match with the camera ID */
458 .board_info = &pcm990_camera_i2c[1],
459 .i2c_adapter_id = 0,
460 .query_bus_param = pcm990_camera_query_bus_param,
461 .set_bus_param = pcm990_camera_set_bus_param,
462 .free_bus = pcm990_camera_free_bus,
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463 },
464};
465
466static struct platform_device pcm990_camera[] = {
467 {
468 .name = "soc-camera-pdrv",
469 .id = 0,
470 .dev = {
471 .platform_data = &iclink[0],
472 },
473 }, {
474 .name = "soc-camera-pdrv",
475 .id = 1,
476 .dev = {
477 .platform_data = &iclink[1],
478 },
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479 },
480};
481#endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
482
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483/*
484 * enable generic access to the base board control CPLDs U6 and U7
485 */
486static struct map_desc pcm990_io_desc[] __initdata = {
487 {
488 .virtual = PCM990_CTRL_BASE,
489 .pfn = __phys_to_pfn(PCM990_CTRL_PHYS),
490 .length = PCM990_CTRL_SIZE,
491 .type = MT_DEVICE /* CPLD */
492 }, {
493 .virtual = PCM990_CF_PLD_BASE,
494 .pfn = __phys_to_pfn(PCM990_CF_PLD_PHYS),
495 .length = PCM990_CF_PLD_SIZE,
496 .type = MT_DEVICE /* CPLD */
497 }
498};
499
500/*
501 * system init for baseboard usage. Will be called by pcm027 init.
502 *
503 * Add platform devices present on this baseboard and init
504 * them from CPU side as far as required to use them later on
505 */
506void __init pcm990_baseboard_init(void)
507{
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508 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
509
2e927b76 510 /* register CPLD access */
6a566fbb 511 iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
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512
513 /* register CPLD's IRQ controller */
514 pcm990_init_irq();
515
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516#ifndef CONFIG_PCM990_DISPLAY_NONE
517 set_pxa_fb_info(&pcm990_fbinfo);
518#endif
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519 platform_device_register(&pcm990_backlight_device);
520
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521 /* MMC */
522 pxa_set_mci_info(&pcm990_mci_platform_data);
523
524 /* USB host */
525 pxa_set_ohci_info(&pcm990_ohci_platform_data);
526
58762e77 527 pxa_set_i2c_info(NULL);
9f19d638 528 pxa_set_ac97_info(NULL);
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529
530#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
0e851907 531 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
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532 pxa_set_camera_info(&pcm990_pxacamera_platform_data);
533
6a566fbb 534 i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
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535
536 platform_device_register(&pcm990_camera[0]);
537 platform_device_register(&pcm990_camera[1]);
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538#endif
539
6a566fbb 540 printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
2e927b76 541}