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#include <linux/gpio.h>
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/mt9v022.h>
30#include <media/soc_camera.h>
31
32#include <linux/platform_data/camera-pxa.h>
33#include <asm/mach/map.h>
34#include <mach/pxa27x.h>
35#include <mach/audio.h>
36#include <linux/platform_data/mmc-pxamci.h>
37#include <linux/platform_data/usb-ohci-pxa27x.h>
38#include <mach/pcm990_baseboard.h>
39#include <linux/platform_data/video-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
69static void __iomem *pcm990_cpld_base;
70
71static u8 pcm990_cpld_readb(unsigned int reg)
72{
73	return readb(pcm990_cpld_base + reg);
74}
75
76static void pcm990_cpld_writeb(u8 value, unsigned int reg)
77{
78	writeb(value, pcm990_cpld_base + reg);
79}
80
81/*
82 * pcm990_lcd_power - control power supply to the LCD
83 * @on: 0 = switch off, 1 = switch on
84 *
85 * Called by the pxafb driver
86 */
87#ifndef CONFIG_PCM990_DISPLAY_NONE
88static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
89{
90	if (on) {
91		/* enable LCD-Latches
92		 * power on LCD
93		 */
94		pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON,
95				PCM990_CTRL_REG3);
96	} else {
97		/* disable LCD-Latches
98		 * power off LCD
99		 */
100		pcm990_cpld_writeb(0, PCM990_CTRL_REG3);
101	}
102}
103#endif
104
105#if defined(CONFIG_PCM990_DISPLAY_SHARP)
106static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
107	.pixclock		= 28000,
108	.xres			= 640,
109	.yres			= 480,
110	.bpp			= 16,
111	.hsync_len		= 20,
112	.left_margin		= 103,
113	.right_margin		= 47,
114	.vsync_len		= 6,
115	.upper_margin		= 28,
116	.lower_margin		= 5,
117	.sync			= 0,
118	.cmap_greyscale		= 0,
119};
120
121static struct pxafb_mach_info pcm990_fbinfo __initdata = {
122	.modes			= &fb_info_sharp_lq084v1dg21,
123	.num_modes		= 1,
124	.lcd_conn		= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
125	.pxafb_lcd_power	= pcm990_lcd_power,
126};
127#elif defined(CONFIG_PCM990_DISPLAY_NEC)
128struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
129	.pixclock		= 39720,
130	.xres			= 640,
131	.yres			= 480,
132	.bpp			= 16,
133	.hsync_len		= 32,
134	.left_margin		= 16,
135	.right_margin		= 48,
136	.vsync_len		= 2,
137	.upper_margin		= 12,
138	.lower_margin		= 17,
139	.sync			= 0,
140	.cmap_greyscale		= 0,
141};
142
143static struct pxafb_mach_info pcm990_fbinfo __initdata = {
144	.modes			= &fb_info_nec_nl6448bc20_18d,
145	.num_modes		= 1,
146	.lcd_conn		= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
147	.pxafb_lcd_power	= pcm990_lcd_power,
148};
149#endif
150
151static struct platform_pwm_backlight_data pcm990_backlight_data = {
152	.pwm_id		= 0,
153	.max_brightness	= 1023,
154	.dft_brightness	= 1023,
155	.pwm_period_ns	= 78770,
156	.enable_gpio	= -1,
157};
158
159static struct platform_device pcm990_backlight_device = {
160	.name		= "pwm-backlight",
161	.dev		= {
162		.parent = &pxa27x_device_pwm0.dev,
163		.platform_data = &pcm990_backlight_data,
164	},
165};
166
167/*
168 * The PCM-990 development baseboard uses PCM-027's hardware in the
169 * following way:
170 *
171 * - LCD support is in use
172 *  - GPIO16 is output for back light on/off with PWM
173 *  - GPIO58 ... GPIO73 are outputs for display data
174 *  - GPIO74 is output output for LCDFCLK
175 *  - GPIO75 is output for LCDLCLK
176 *  - GPIO76 is output for LCDPCLK
177 *  - GPIO77 is output for LCDBIAS
178 * - MMC support is in use
179 *  - GPIO32 is output for MMCCLK
180 *  - GPIO92 is MMDAT0
181 *  - GPIO109 is MMDAT1
182 *  - GPIO110 is MMCS0
183 *  - GPIO111 is MMCS1
184 *  - GPIO112 is MMCMD
185 * - IDE/CF card is in use
186 *  - GPIO48 is output /POE
187 *  - GPIO49 is output /PWE
188 *  - GPIO50 is output /PIOR
189 *  - GPIO51 is output /PIOW
190 *  - GPIO54 is output /PCE2
191 *  - GPIO55 is output /PREG
192 *  - GPIO56 is input /PWAIT
193 *  - GPIO57 is output /PIOS16
194 *  - GPIO79 is output PSKTSEL
195 *  - GPIO85 is output /PCE1
196 * - FFUART is in use
197 *  - GPIO34 is input FFRXD
198 *  - GPIO35 is input FFCTS
199 *  - GPIO36 is input FFDCD
200 *  - GPIO37 is input FFDSR
201 *  - GPIO38 is input FFRI
202 *  - GPIO39 is output FFTXD
203 *  - GPIO40 is output FFDTR
204 *  - GPIO41 is output FFRTS
205 * - BTUART is in use
206 *  - GPIO42 is input BTRXD
207 *  - GPIO43 is output BTTXD
208 *  - GPIO44 is input BTCTS
209 *  - GPIO45 is output BTRTS
210 * - IRUART is in use
211 *  - GPIO46 is input STDRXD
212 *  - GPIO47 is output STDTXD
213 * - AC97 is in use*)
214 *  - GPIO28 is input AC97CLK
215 *  - GPIO29 is input AC97DatIn
216 *  - GPIO30 is output AC97DatO
217 *  - GPIO31 is output AC97SYNC
218 *  - GPIO113 is output AC97_RESET
219 * - SSP is in use
220 *  - GPIO23 is output SSPSCLK
221 *  - GPIO24 is output chip select to Max7301
222 *  - GPIO25 is output SSPTXD
223 *  - GPIO26 is input SSPRXD
224 *  - GPIO27 is input for Max7301 IRQ
225 *  - GPIO53 is input SSPSYSCLK
226 * - SSP3 is in use
227 *  - GPIO81 is output SSPTXD3
228 *  - GPIO82 is input SSPRXD3
229 *  - GPIO83 is output SSPSFRM
230 *  - GPIO84 is output SSPCLK3
231 *
232 * Otherwise claimed GPIOs:
233 * GPIO1 -> IRQ from user switch
234 * GPIO9 -> IRQ from power management
235 * GPIO10 -> IRQ from WML9712 AC97 controller
236 * GPIO11 -> IRQ from IDE controller
237 * GPIO12 -> IRQ from CF controller
238 * GPIO13 -> IRQ from CF controller
239 * GPIO14 -> GPIO free
240 * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
241 * GPIO19 -> GPIO free
242 * GPIO20 -> /SDCS2
243 * GPIO21 -> /CS3 PC card socket select
244 * GPIO33 -> /CS5  network controller select
245 * GPIO78 -> /CS2  (16 bit wide data path)
246 * GPIO80 -> /CS4  (16 bit wide data path)
247 * GPIO86 -> GPIO free
248 * GPIO87 -> GPIO free
249 * GPIO90 -> LED0 on CPU module
250 * GPIO91 -> LED1 on CPI module
251 * GPIO117 -> SCL
252 * GPIO118 -> SDA
253 */
254
255static unsigned long pcm990_irq_enabled;
256
257static void pcm990_mask_ack_irq(struct irq_data *d)
258{
259	int pcm990_irq = (d->irq - PCM027_IRQ(0));
260
261	pcm990_irq_enabled &= ~(1 << pcm990_irq);
262
263	pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
264}
265
266static void pcm990_unmask_irq(struct irq_data *d)
267{
268	int pcm990_irq = (d->irq - PCM027_IRQ(0));
269	u8 val;
270
271	/* the irq can be acknowledged only if deasserted, so it's done here */
272
273	pcm990_irq_enabled |= (1 << pcm990_irq);
274
275	val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
276	val |= 1 << pcm990_irq;
277	pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR);
278
279	pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
280}
281
282static struct irq_chip pcm990_irq_chip = {
283	.irq_mask_ack	= pcm990_mask_ack_irq,
284	.irq_unmask	= pcm990_unmask_irq,
285};
286
287static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
288{
289	unsigned long pending;
290
291	pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
292	pending &= pcm990_irq_enabled;
293
294	do {
295		/* clear our parent IRQ */
296		desc->irq_data.chip->irq_ack(&desc->irq_data);
297		if (likely(pending)) {
298			irq = PCM027_IRQ(0) + __ffs(pending);
299			generic_handle_irq(irq);
300		}
301		pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
302		pending &= pcm990_irq_enabled;
303	} while (pending);
304}
305
306static void __init pcm990_init_irq(void)
307{
308	int irq;
309
310	/* setup extra PCM990 irqs */
311	for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
312		irq_set_chip_and_handler(irq, &pcm990_irq_chip,
313					 handle_level_irq);
314		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
315	}
316
317	/* disable all Interrupts */
318	pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA);
319	pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR);
320
321	irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
322	irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
323}
324
325static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
326			void *data)
327{
328	int err;
329
330	err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0,
331			     "MMC card detect", data);
332	if (err)
333		printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
334				"card detect IRQ\n");
335
336	return err;
337}
338
339static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
340{
341	struct pxamci_platform_data *p_d = dev->platform_data;
342	u8 val;
343
344	val = pcm990_cpld_readb(PCM990_CTRL_REG5);
345
346	if ((1 << vdd) & p_d->ocr_mask)
347		val |= PCM990_CTRL_MMC2PWR;
348	else
349		val &= ~PCM990_CTRL_MMC2PWR;
350
351	pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
352	return 0;
353}
354
355static void pcm990_mci_exit(struct device *dev, void *data)
356{
357	free_irq(PCM027_MMCDET_IRQ, data);
358}
359
360#define MSECS_PER_JIFFY (1000/HZ)
361
362static struct pxamci_platform_data pcm990_mci_platform_data = {
363	.detect_delay_ms	= 250,
364	.ocr_mask		= MMC_VDD_32_33 | MMC_VDD_33_34,
365	.init 			= pcm990_mci_init,
366	.setpower 		= pcm990_mci_setpower,
367	.exit			= pcm990_mci_exit,
368	.gpio_card_detect	= -1,
369	.gpio_card_ro		= -1,
370	.gpio_power		= -1,
371};
372
373static struct pxaohci_platform_data pcm990_ohci_platform_data = {
374	.port_mode	= PMM_PERPORT_MODE,
375	.flags		= ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
376	.power_on_delay	= 10,
377};
378
379/*
380 * PXA27x Camera specific stuff
381 */
382#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
383static unsigned long pcm990_camera_pin_config[] = {
384	/* CIF */
385	GPIO98_CIF_DD_0,
386	GPIO105_CIF_DD_1,
387	GPIO104_CIF_DD_2,
388	GPIO103_CIF_DD_3,
389	GPIO95_CIF_DD_4,
390	GPIO94_CIF_DD_5,
391	GPIO93_CIF_DD_6,
392	GPIO108_CIF_DD_7,
393	GPIO107_CIF_DD_8,
394	GPIO106_CIF_DD_9,
395	GPIO42_CIF_MCLK,
396	GPIO45_CIF_PCLK,
397	GPIO43_CIF_FV,
398	GPIO44_CIF_LV,
399};
400
401/*
402 * CICR4: PCLK_EN:	Pixel clock is supplied by the sensor
403 *	MCLK_EN:	Master clock is generated by PXA
404 *	PCP:		Data sampled on the falling edge of pixel clock
405 */
406struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
407	.flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
408		PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
409	.mclk_10khz = 1000,
410};
411
412#include <linux/platform_data/pca953x.h>
413
414static struct pca953x_platform_data pca9536_data = {
415	.gpio_base	= PXA_NR_BUILTIN_GPIO,
416};
417
418static int gpio_bus_switch = -EINVAL;
419
420static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
421				       unsigned long flags)
422{
423	if (gpio_bus_switch < 0) {
424		if (flags == SOCAM_DATAWIDTH_10)
425			return 0;
426		else
427			return -EINVAL;
428	}
429
430	if (flags & SOCAM_DATAWIDTH_8)
431		gpio_set_value_cansleep(gpio_bus_switch, 1);
432	else
433		gpio_set_value_cansleep(gpio_bus_switch, 0);
434
435	return 0;
436}
437
438static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
439{
440	int ret;
441
442	if (gpio_bus_switch < 0) {
443		ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera");
444		if (!ret) {
445			gpio_bus_switch = PXA_NR_BUILTIN_GPIO;
446			gpio_direction_output(gpio_bus_switch, 0);
447		}
448	}
449
450	if (gpio_bus_switch >= 0)
451		return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
452	else
453		return SOCAM_DATAWIDTH_10;
454}
455
456static void pcm990_camera_free_bus(struct soc_camera_link *link)
457{
458	if (gpio_bus_switch < 0)
459		return;
460
461	gpio_free(gpio_bus_switch);
462	gpio_bus_switch = -EINVAL;
463}
464
465/* Board I2C devices. */
466static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
467	{
468		/* Must initialize before the camera(s) */
469		I2C_BOARD_INFO("pca9536", 0x41),
470		.platform_data = &pca9536_data,
471	},
472};
473
474static struct mt9v022_platform_data mt9v022_pdata = {
475	.y_skip_top = 1,
476};
477
478static struct i2c_board_info pcm990_camera_i2c[] = {
479	{
480		I2C_BOARD_INFO("mt9v022", 0x48),
481	}, {
482		I2C_BOARD_INFO("mt9m001", 0x5d),
483	},
484};
485
486static struct soc_camera_link iclink[] = {
487	{
488		.bus_id			= 0, /* Must match with the camera ID */
489		.board_info		= &pcm990_camera_i2c[0],
490		.priv			= &mt9v022_pdata,
491		.i2c_adapter_id		= 0,
492		.query_bus_param	= pcm990_camera_query_bus_param,
493		.set_bus_param		= pcm990_camera_set_bus_param,
494		.free_bus		= pcm990_camera_free_bus,
495	}, {
496		.bus_id			= 0, /* Must match with the camera ID */
497		.board_info		= &pcm990_camera_i2c[1],
498		.i2c_adapter_id		= 0,
499		.query_bus_param	= pcm990_camera_query_bus_param,
500		.set_bus_param		= pcm990_camera_set_bus_param,
501		.free_bus		= pcm990_camera_free_bus,
502	},
503};
504
505static struct platform_device pcm990_camera[] = {
506	{
507		.name	= "soc-camera-pdrv",
508		.id	= 0,
509		.dev	= {
510			.platform_data = &iclink[0],
511		},
512	}, {
513		.name	= "soc-camera-pdrv",
514		.id	= 1,
515		.dev	= {
516			.platform_data = &iclink[1],
517		},
518	},
519};
520#endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
521
522/*
523 * system init for baseboard usage. Will be called by pcm027 init.
524 *
525 * Add platform devices present on this baseboard and init
526 * them from CPU side as far as required to use them later on
527 */
528void __init pcm990_baseboard_init(void)
529{
530	pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
531
532	pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE);
533	if (!pcm990_cpld_base) {
534		pr_err("pcm990: failed to ioremap cpld\n");
535		return;
536	}
537
538	/* register CPLD's IRQ controller */
539	pcm990_init_irq();
540
541#ifndef CONFIG_PCM990_DISPLAY_NONE
542	pxa_set_fb_info(NULL, &pcm990_fbinfo);
543#endif
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}
567