Merge commit 'v2.6.28-rc2' into tracing/urgent
[linux-2.6] / arch / arm / mach-pxa / pcm990-baseboard.c
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 <mach/i2c.h>
32 #include <mach/camera.h>
33 #include <asm/mach/map.h>
34 #include <mach/pxa-regs.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 #include <mach/mfp-pxa27x.h>
41
42 #include "devices.h"
43 #include "generic.h"
44
45 static unsigned long pcm990_pin_config[] __initdata = {
46         /* MMC */
47         GPIO32_MMC_CLK,
48         GPIO112_MMC_CMD,
49         GPIO92_MMC_DAT_0,
50         GPIO109_MMC_DAT_1,
51         GPIO110_MMC_DAT_2,
52         GPIO111_MMC_DAT_3,
53         /* USB */
54         GPIO88_USBH1_PWR,
55         GPIO89_USBH1_PEN,
56         /* PWM0 */
57         GPIO16_PWM0_OUT,
58 };
59
60 /*
61  * pcm990_lcd_power - control power supply to the LCD
62  * @on: 0 = switch off, 1 = switch on
63  *
64  * Called by the pxafb driver
65  */
66 #ifndef CONFIG_PCM990_DISPLAY_NONE
67 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
68 {
69         if (on) {
70                 /* enable LCD-Latches
71                  * power on LCD
72                  */
73                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
74                         PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
75         } else {
76                 /* disable LCD-Latches
77                  * power off LCD
78                  */
79                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
80         }
81 }
82 #endif
83
84 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
85 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
86         .pixclock               = 28000,
87         .xres                   = 640,
88         .yres                   = 480,
89         .bpp                    = 16,
90         .hsync_len              = 20,
91         .left_margin            = 103,
92         .right_margin           = 47,
93         .vsync_len              = 6,
94         .upper_margin           = 28,
95         .lower_margin           = 5,
96         .sync                   = 0,
97         .cmap_greyscale         = 0,
98 };
99
100 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
101         .modes                  = &fb_info_sharp_lq084v1dg21,
102         .num_modes              = 1,
103         .lccr0                  = LCCR0_PAS,
104         .lccr3                  = LCCR3_PCP,
105         .pxafb_lcd_power        = pcm990_lcd_power,
106 };
107 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
108 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
109         .pixclock               = 39720,
110         .xres                   = 640,
111         .yres                   = 480,
112         .bpp                    = 16,
113         .hsync_len              = 32,
114         .left_margin            = 16,
115         .right_margin           = 48,
116         .vsync_len              = 2,
117         .upper_margin           = 12,
118         .lower_margin           = 17,
119         .sync                   = 0,
120         .cmap_greyscale         = 0,
121 };
122
123 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
124         .modes                  = &fb_info_nec_nl6448bc20_18d,
125         .num_modes              = 1,
126         .lccr0                  = LCCR0_Act,
127         .lccr3                  = LCCR3_PixFlEdg,
128         .pxafb_lcd_power        = pcm990_lcd_power,
129 };
130 #endif
131
132 static struct platform_pwm_backlight_data pcm990_backlight_data = {
133         .pwm_id         = 0,
134         .max_brightness = 1023,
135         .dft_brightness = 1023,
136         .pwm_period_ns  = 78770,
137 };
138
139 static struct platform_device pcm990_backlight_device = {
140         .name           = "pwm-backlight",
141         .dev            = {
142                 .parent = &pxa27x_device_pwm0.dev,
143                 .platform_data = &pcm990_backlight_data,
144         },
145 };
146
147 /*
148  * The PCM-990 development baseboard uses PCM-027's hardware in the
149  * following way:
150  *
151  * - LCD support is in use
152  *  - GPIO16 is output for back light on/off with PWM
153  *  - GPIO58 ... GPIO73 are outputs for display data
154  *  - GPIO74 is output output for LCDFCLK
155  *  - GPIO75 is output for LCDLCLK
156  *  - GPIO76 is output for LCDPCLK
157  *  - GPIO77 is output for LCDBIAS
158  * - MMC support is in use
159  *  - GPIO32 is output for MMCCLK
160  *  - GPIO92 is MMDAT0
161  *  - GPIO109 is MMDAT1
162  *  - GPIO110 is MMCS0
163  *  - GPIO111 is MMCS1
164  *  - GPIO112 is MMCMD
165  * - IDE/CF card is in use
166  *  - GPIO48 is output /POE
167  *  - GPIO49 is output /PWE
168  *  - GPIO50 is output /PIOR
169  *  - GPIO51 is output /PIOW
170  *  - GPIO54 is output /PCE2
171  *  - GPIO55 is output /PREG
172  *  - GPIO56 is input /PWAIT
173  *  - GPIO57 is output /PIOS16
174  *  - GPIO79 is output PSKTSEL
175  *  - GPIO85 is output /PCE1
176  * - FFUART is in use
177  *  - GPIO34 is input FFRXD
178  *  - GPIO35 is input FFCTS
179  *  - GPIO36 is input FFDCD
180  *  - GPIO37 is input FFDSR
181  *  - GPIO38 is input FFRI
182  *  - GPIO39 is output FFTXD
183  *  - GPIO40 is output FFDTR
184  *  - GPIO41 is output FFRTS
185  * - BTUART is in use
186  *  - GPIO42 is input BTRXD
187  *  - GPIO43 is output BTTXD
188  *  - GPIO44 is input BTCTS
189  *  - GPIO45 is output BTRTS
190  * - IRUART is in use
191  *  - GPIO46 is input STDRXD
192  *  - GPIO47 is output STDTXD
193  * - AC97 is in use*)
194  *  - GPIO28 is input AC97CLK
195  *  - GPIO29 is input AC97DatIn
196  *  - GPIO30 is output AC97DatO
197  *  - GPIO31 is output AC97SYNC
198  *  - GPIO113 is output AC97_RESET
199  * - SSP is in use
200  *  - GPIO23 is output SSPSCLK
201  *  - GPIO24 is output chip select to Max7301
202  *  - GPIO25 is output SSPTXD
203  *  - GPIO26 is input SSPRXD
204  *  - GPIO27 is input for Max7301 IRQ
205  *  - GPIO53 is input SSPSYSCLK
206  * - SSP3 is in use
207  *  - GPIO81 is output SSPTXD3
208  *  - GPIO82 is input SSPRXD3
209  *  - GPIO83 is output SSPSFRM
210  *  - GPIO84 is output SSPCLK3
211  *
212  * Otherwise claimed GPIOs:
213  * GPIO1 -> IRQ from user switch
214  * GPIO9 -> IRQ from power management
215  * GPIO10 -> IRQ from WML9712 AC97 controller
216  * GPIO11 -> IRQ from IDE controller
217  * GPIO12 -> IRQ from CF controller
218  * GPIO13 -> IRQ from CF controller
219  * GPIO14 -> GPIO free
220  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
221  * GPIO19 -> GPIO free
222  * GPIO20 -> /SDCS2
223  * GPIO21 -> /CS3 PC card socket select
224  * GPIO33 -> /CS5  network controller select
225  * GPIO78 -> /CS2  (16 bit wide data path)
226  * GPIO80 -> /CS4  (16 bit wide data path)
227  * GPIO86 -> GPIO free
228  * GPIO87 -> GPIO free
229  * GPIO90 -> LED0 on CPU module
230  * GPIO91 -> LED1 on CPI module
231  * GPIO117 -> SCL
232  * GPIO118 -> SDA
233  */
234
235 static unsigned long pcm990_irq_enabled;
236
237 static void pcm990_mask_ack_irq(unsigned int irq)
238 {
239         int pcm990_irq = (irq - PCM027_IRQ(0));
240         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
241 }
242
243 static void pcm990_unmask_irq(unsigned int irq)
244 {
245         int pcm990_irq = (irq - PCM027_IRQ(0));
246         /* the irq can be acknowledged only if deasserted, so it's done here */
247         PCM990_INTSETCLR |= 1 << pcm990_irq;
248         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
249 }
250
251 static struct irq_chip pcm990_irq_chip = {
252         .mask_ack       = pcm990_mask_ack_irq,
253         .unmask         = pcm990_unmask_irq,
254 };
255
256 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
257 {
258         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
259
260         do {
261                 GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
262                                         GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
263                 if (likely(pending)) {
264                         irq = PCM027_IRQ(0) + __ffs(pending);
265                         generic_handle_irq(irq);
266                 }
267                 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
268         } while (pending);
269 }
270
271 static void __init pcm990_init_irq(void)
272 {
273         int irq;
274
275         /* setup extra PCM990 irqs */
276         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
277                 set_irq_chip(irq, &pcm990_irq_chip);
278                 set_irq_handler(irq, handle_level_irq);
279                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
280         }
281
282         PCM990_INTMSKENA = 0x00;        /* disable all Interrupts */
283         PCM990_INTSETCLR = 0xFF;
284
285         set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
286         set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
287 }
288
289 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
290                         void *data)
291 {
292         int err;
293
294         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
295                              "MMC card detect", data);
296         if (err)
297                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
298                                 "card detect IRQ\n");
299
300         return err;
301 }
302
303 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
304 {
305         struct pxamci_platform_data *p_d = dev->platform_data;
306
307         if ((1 << vdd) & p_d->ocr_mask)
308                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
309                                                 PCM990_CTRL_MMC2PWR;
310         else
311                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
312                                                 ~PCM990_CTRL_MMC2PWR;
313 }
314
315 static void pcm990_mci_exit(struct device *dev, void *data)
316 {
317         free_irq(PCM027_MMCDET_IRQ, data);
318 }
319
320 #define MSECS_PER_JIFFY (1000/HZ)
321
322 static struct pxamci_platform_data pcm990_mci_platform_data = {
323         .detect_delay   = 250 / MSECS_PER_JIFFY,
324         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
325         .init           = pcm990_mci_init,
326         .setpower       = pcm990_mci_setpower,
327         .exit           = pcm990_mci_exit,
328 };
329
330 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
331         .port_mode      = PMM_PERPORT_MODE,
332         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
333         .power_on_delay = 10,
334 };
335
336 /*
337  * PXA27x Camera specific stuff
338  */
339 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
340 static unsigned long pcm990_camera_pin_config[] = {
341         /* CIF */
342         GPIO98_CIF_DD_0,
343         GPIO105_CIF_DD_1,
344         GPIO104_CIF_DD_2,
345         GPIO103_CIF_DD_3,
346         GPIO95_CIF_DD_4,
347         GPIO94_CIF_DD_5,
348         GPIO93_CIF_DD_6,
349         GPIO108_CIF_DD_7,
350         GPIO107_CIF_DD_8,
351         GPIO106_CIF_DD_9,
352         GPIO42_CIF_MCLK,
353         GPIO45_CIF_PCLK,
354         GPIO43_CIF_FV,
355         GPIO44_CIF_LV,
356 };
357
358 static int pcm990_pxacamera_init(struct device *dev)
359 {
360         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
361         return 0;
362 }
363
364 /*
365  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
366  *      MCLK_EN:        Master clock is generated by PXA
367  *      PCP:            Data sampled on the falling edge of pixel clock
368  */
369 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
370         .init   = pcm990_pxacamera_init,
371         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
372                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
373         .mclk_10khz = 1000,
374 };
375
376 #include <linux/i2c/pca953x.h>
377
378 static struct pca953x_platform_data pca9536_data = {
379         .gpio_base      = NR_BUILTIN_GPIO + 1,
380 };
381
382 static struct soc_camera_link iclink[] = {
383         {
384                 .bus_id = 0, /* Must match with the camera ID above */
385                 .gpio   = NR_BUILTIN_GPIO + 1,
386         }, {
387                 .bus_id = 0, /* Must match with the camera ID above */
388         }
389 };
390
391 /* Board I2C devices. */
392 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
393         {
394                 /* Must initialize before the camera(s) */
395                 I2C_BOARD_INFO("pca9536", 0x41),
396                 .platform_data = &pca9536_data,
397         }, {
398                 I2C_BOARD_INFO("mt9v022", 0x48),
399                 .platform_data = &iclink[0], /* With extender */
400         }, {
401                 I2C_BOARD_INFO("mt9m001", 0x5d),
402                 .platform_data = &iclink[0], /* With extender */
403         },
404 };
405 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
406
407 /*
408  * enable generic access to the base board control CPLDs U6 and U7
409  */
410 static struct map_desc pcm990_io_desc[] __initdata = {
411         {
412                 .virtual        = PCM990_CTRL_BASE,
413                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
414                 .length         = PCM990_CTRL_SIZE,
415                 .type           = MT_DEVICE     /* CPLD */
416         }, {
417                 .virtual        = PCM990_CF_PLD_BASE,
418                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
419                 .length         = PCM990_CF_PLD_SIZE,
420                 .type           = MT_DEVICE     /* CPLD */
421         }
422 };
423
424 /*
425  * system init for baseboard usage. Will be called by pcm027 init.
426  *
427  * Add platform devices present on this baseboard and init
428  * them from CPU side as far as required to use them later on
429  */
430 void __init pcm990_baseboard_init(void)
431 {
432         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
433
434         /* register CPLD access */
435         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
436
437         /* register CPLD's IRQ controller */
438         pcm990_init_irq();
439
440 #ifndef CONFIG_PCM990_DISPLAY_NONE
441         set_pxa_fb_info(&pcm990_fbinfo);
442 #endif
443         platform_device_register(&pcm990_backlight_device);
444
445         /* MMC */
446         pxa_set_mci_info(&pcm990_mci_platform_data);
447
448         /* USB host */
449         pxa_set_ohci_info(&pcm990_ohci_platform_data);
450
451         pxa_set_i2c_info(NULL);
452         pxa_set_ac97_info(NULL);
453
454 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
455         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
456
457         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
458 #endif
459
460         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
461 }