01791d74e08ec543e6aab65394c137921a6552f4
[linux-2.6.git] / 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 <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
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
63 /*
64  * pcm990_lcd_power - control power supply to the LCD
65  * @on: 0 = switch off, 1 = switch on
66  *
67  * Called by the pxafb driver
68  */
69 #ifndef CONFIG_PCM990_DISPLAY_NONE
70 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
71 {
72         if (on) {
73                 /* enable LCD-Latches
74                  * power on LCD
75                  */
76                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
77                         PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
78         } else {
79                 /* disable LCD-Latches
80                  * power off LCD
81                  */
82                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
83         }
84 }
85 #endif
86
87 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
88 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
89         .pixclock               = 28000,
90         .xres                   = 640,
91         .yres                   = 480,
92         .bpp                    = 16,
93         .hsync_len              = 20,
94         .left_margin            = 103,
95         .right_margin           = 47,
96         .vsync_len              = 6,
97         .upper_margin           = 28,
98         .lower_margin           = 5,
99         .sync                   = 0,
100         .cmap_greyscale         = 0,
101 };
102
103 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
104         .modes                  = &fb_info_sharp_lq084v1dg21,
105         .num_modes              = 1,
106         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
107         .pxafb_lcd_power        = pcm990_lcd_power,
108 };
109 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
110 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
111         .pixclock               = 39720,
112         .xres                   = 640,
113         .yres                   = 480,
114         .bpp                    = 16,
115         .hsync_len              = 32,
116         .left_margin            = 16,
117         .right_margin           = 48,
118         .vsync_len              = 2,
119         .upper_margin           = 12,
120         .lower_margin           = 17,
121         .sync                   = 0,
122         .cmap_greyscale         = 0,
123 };
124
125 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
126         .modes                  = &fb_info_nec_nl6448bc20_18d,
127         .num_modes              = 1,
128         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
129         .pxafb_lcd_power        = pcm990_lcd_power,
130 };
131 #endif
132
133 static struct platform_pwm_backlight_data pcm990_backlight_data = {
134         .pwm_id         = 0,
135         .max_brightness = 1023,
136         .dft_brightness = 1023,
137         .pwm_period_ns  = 78770,
138 };
139
140 static struct platform_device pcm990_backlight_device = {
141         .name           = "pwm-backlight",
142         .dev            = {
143                 .parent = &pxa27x_device_pwm0.dev,
144                 .platform_data = &pcm990_backlight_data,
145         },
146 };
147
148 /*
149  * The PCM-990 development baseboard uses PCM-027's hardware in the
150  * following way:
151  *
152  * - LCD support is in use
153  *  - GPIO16 is output for back light on/off with PWM
154  *  - GPIO58 ... GPIO73 are outputs for display data
155  *  - GPIO74 is output output for LCDFCLK
156  *  - GPIO75 is output for LCDLCLK
157  *  - GPIO76 is output for LCDPCLK
158  *  - GPIO77 is output for LCDBIAS
159  * - MMC support is in use
160  *  - GPIO32 is output for MMCCLK
161  *  - GPIO92 is MMDAT0
162  *  - GPIO109 is MMDAT1
163  *  - GPIO110 is MMCS0
164  *  - GPIO111 is MMCS1
165  *  - GPIO112 is MMCMD
166  * - IDE/CF card is in use
167  *  - GPIO48 is output /POE
168  *  - GPIO49 is output /PWE
169  *  - GPIO50 is output /PIOR
170  *  - GPIO51 is output /PIOW
171  *  - GPIO54 is output /PCE2
172  *  - GPIO55 is output /PREG
173  *  - GPIO56 is input /PWAIT
174  *  - GPIO57 is output /PIOS16
175  *  - GPIO79 is output PSKTSEL
176  *  - GPIO85 is output /PCE1
177  * - FFUART is in use
178  *  - GPIO34 is input FFRXD
179  *  - GPIO35 is input FFCTS
180  *  - GPIO36 is input FFDCD
181  *  - GPIO37 is input FFDSR
182  *  - GPIO38 is input FFRI
183  *  - GPIO39 is output FFTXD
184  *  - GPIO40 is output FFDTR
185  *  - GPIO41 is output FFRTS
186  * - BTUART is in use
187  *  - GPIO42 is input BTRXD
188  *  - GPIO43 is output BTTXD
189  *  - GPIO44 is input BTCTS
190  *  - GPIO45 is output BTRTS
191  * - IRUART is in use
192  *  - GPIO46 is input STDRXD
193  *  - GPIO47 is output STDTXD
194  * - AC97 is in use*)
195  *  - GPIO28 is input AC97CLK
196  *  - GPIO29 is input AC97DatIn
197  *  - GPIO30 is output AC97DatO
198  *  - GPIO31 is output AC97SYNC
199  *  - GPIO113 is output AC97_RESET
200  * - SSP is in use
201  *  - GPIO23 is output SSPSCLK
202  *  - GPIO24 is output chip select to Max7301
203  *  - GPIO25 is output SSPTXD
204  *  - GPIO26 is input SSPRXD
205  *  - GPIO27 is input for Max7301 IRQ
206  *  - GPIO53 is input SSPSYSCLK
207  * - SSP3 is in use
208  *  - GPIO81 is output SSPTXD3
209  *  - GPIO82 is input SSPRXD3
210  *  - GPIO83 is output SSPSFRM
211  *  - GPIO84 is output SSPCLK3
212  *
213  * Otherwise claimed GPIOs:
214  * GPIO1 -> IRQ from user switch
215  * GPIO9 -> IRQ from power management
216  * GPIO10 -> IRQ from WML9712 AC97 controller
217  * GPIO11 -> IRQ from IDE controller
218  * GPIO12 -> IRQ from CF controller
219  * GPIO13 -> IRQ from CF controller
220  * GPIO14 -> GPIO free
221  * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
222  * GPIO19 -> GPIO free
223  * GPIO20 -> /SDCS2
224  * GPIO21 -> /CS3 PC card socket select
225  * GPIO33 -> /CS5  network controller select
226  * GPIO78 -> /CS2  (16 bit wide data path)
227  * GPIO80 -> /CS4  (16 bit wide data path)
228  * GPIO86 -> GPIO free
229  * GPIO87 -> GPIO free
230  * GPIO90 -> LED0 on CPU module
231  * GPIO91 -> LED1 on CPI module
232  * GPIO117 -> SCL
233  * GPIO118 -> SDA
234  */
235
236 static unsigned long pcm990_irq_enabled;
237
238 static void pcm990_mask_ack_irq(unsigned int irq)
239 {
240         int pcm990_irq = (irq - PCM027_IRQ(0));
241         PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
242 }
243
244 static void pcm990_unmask_irq(unsigned int irq)
245 {
246         int pcm990_irq = (irq - PCM027_IRQ(0));
247         /* the irq can be acknowledged only if deasserted, so it's done here */
248         PCM990_INTSETCLR |= 1 << pcm990_irq;
249         PCM990_INTMSKENA  = (pcm990_irq_enabled |= (1 << pcm990_irq));
250 }
251
252 static struct irq_chip pcm990_irq_chip = {
253         .mask_ack       = pcm990_mask_ack_irq,
254         .unmask         = pcm990_unmask_irq,
255 };
256
257 static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
258 {
259         unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
260
261         do {
262                 GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
263                                         GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
264                 if (likely(pending)) {
265                         irq = PCM027_IRQ(0) + __ffs(pending);
266                         generic_handle_irq(irq);
267                 }
268                 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
269         } while (pending);
270 }
271
272 static void __init pcm990_init_irq(void)
273 {
274         int irq;
275
276         /* setup extra PCM990 irqs */
277         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
278                 set_irq_chip(irq, &pcm990_irq_chip);
279                 set_irq_handler(irq, handle_level_irq);
280                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
281         }
282
283         PCM990_INTMSKENA = 0x00;        /* disable all Interrupts */
284         PCM990_INTSETCLR = 0xFF;
285
286         set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
287         set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
288 }
289
290 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
291                         void *data)
292 {
293         int err;
294
295         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
296                              "MMC card detect", data);
297         if (err)
298                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
299                                 "card detect IRQ\n");
300
301         return err;
302 }
303
304 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
305 {
306         struct pxamci_platform_data *p_d = dev->platform_data;
307
308         if ((1 << vdd) & p_d->ocr_mask)
309                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
310                                                 PCM990_CTRL_MMC2PWR;
311         else
312                 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
313                                                 ~PCM990_CTRL_MMC2PWR;
314 }
315
316 static void pcm990_mci_exit(struct device *dev, void *data)
317 {
318         free_irq(PCM027_MMCDET_IRQ, data);
319 }
320
321 #define MSECS_PER_JIFFY (1000/HZ)
322
323 static struct pxamci_platform_data pcm990_mci_platform_data = {
324         .detect_delay   = 250 / MSECS_PER_JIFFY,
325         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
326         .init           = pcm990_mci_init,
327         .setpower       = pcm990_mci_setpower,
328         .exit           = pcm990_mci_exit,
329 };
330
331 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
332         .port_mode      = PMM_PERPORT_MODE,
333         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
334         .power_on_delay = 10,
335 };
336
337 /*
338  * PXA27x Camera specific stuff
339  */
340 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
341 static unsigned long pcm990_camera_pin_config[] = {
342         /* CIF */
343         GPIO98_CIF_DD_0,
344         GPIO105_CIF_DD_1,
345         GPIO104_CIF_DD_2,
346         GPIO103_CIF_DD_3,
347         GPIO95_CIF_DD_4,
348         GPIO94_CIF_DD_5,
349         GPIO93_CIF_DD_6,
350         GPIO108_CIF_DD_7,
351         GPIO107_CIF_DD_8,
352         GPIO106_CIF_DD_9,
353         GPIO42_CIF_MCLK,
354         GPIO45_CIF_PCLK,
355         GPIO43_CIF_FV,
356         GPIO44_CIF_LV,
357 };
358
359 static int pcm990_pxacamera_init(struct device *dev)
360 {
361         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
362         return 0;
363 }
364
365 /*
366  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
367  *      MCLK_EN:        Master clock is generated by PXA
368  *      PCP:            Data sampled on the falling edge of pixel clock
369  */
370 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
371         .init   = pcm990_pxacamera_init,
372         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
373                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
374         .mclk_10khz = 1000,
375 };
376
377 #include <linux/i2c/pca953x.h>
378
379 static struct pca953x_platform_data pca9536_data = {
380         .gpio_base      = NR_BUILTIN_GPIO,
381 };
382
383 static int gpio_bus_switch = -EINVAL;
384
385 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
386                                        unsigned long flags)
387 {
388         if (gpio_bus_switch < 0) {
389                 if (flags == SOCAM_DATAWIDTH_10)
390                         return 0;
391                 else
392                         return -EINVAL;
393         }
394
395         if (flags & SOCAM_DATAWIDTH_8)
396                 gpio_set_value(gpio_bus_switch, 1);
397         else
398                 gpio_set_value(gpio_bus_switch, 0);
399
400         return 0;
401 }
402
403 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
404 {
405         int ret;
406
407         if (gpio_bus_switch < 0) {
408                 ret = gpio_request(NR_BUILTIN_GPIO, "camera");
409                 if (!ret) {
410                         gpio_bus_switch = NR_BUILTIN_GPIO;
411                         gpio_direction_output(gpio_bus_switch, 0);
412                 }
413         }
414
415         if (gpio_bus_switch >= 0)
416                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
417         else
418                 return SOCAM_DATAWIDTH_10;
419 }
420
421 static void pcm990_camera_free_bus(struct soc_camera_link *link)
422 {
423         if (gpio_bus_switch < 0)
424                 return;
425
426         gpio_free(gpio_bus_switch);
427         gpio_bus_switch = -EINVAL;
428 }
429
430 static struct soc_camera_link iclink = {
431         .bus_id = 0, /* Must match with the camera ID above */
432         .query_bus_param = pcm990_camera_query_bus_param,
433         .set_bus_param = pcm990_camera_set_bus_param,
434         .free_bus = pcm990_camera_free_bus,
435 };
436
437 /* Board I2C devices. */
438 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
439         {
440                 /* Must initialize before the camera(s) */
441                 I2C_BOARD_INFO("pca9536", 0x41),
442                 .platform_data = &pca9536_data,
443         }, {
444                 I2C_BOARD_INFO("mt9v022", 0x48),
445                 .platform_data = &iclink, /* With extender */
446         }, {
447                 I2C_BOARD_INFO("mt9m001", 0x5d),
448                 .platform_data = &iclink, /* With extender */
449         },
450 };
451 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
452
453 /*
454  * enable generic access to the base board control CPLDs U6 and U7
455  */
456 static struct map_desc pcm990_io_desc[] __initdata = {
457         {
458                 .virtual        = PCM990_CTRL_BASE,
459                 .pfn            = __phys_to_pfn(PCM990_CTRL_PHYS),
460                 .length         = PCM990_CTRL_SIZE,
461                 .type           = MT_DEVICE     /* CPLD */
462         }, {
463                 .virtual        = PCM990_CF_PLD_BASE,
464                 .pfn            = __phys_to_pfn(PCM990_CF_PLD_PHYS),
465                 .length         = PCM990_CF_PLD_SIZE,
466                 .type           = MT_DEVICE     /* CPLD */
467         }
468 };
469
470 /*
471  * system init for baseboard usage. Will be called by pcm027 init.
472  *
473  * Add platform devices present on this baseboard and init
474  * them from CPU side as far as required to use them later on
475  */
476 void __init pcm990_baseboard_init(void)
477 {
478         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
479
480         /* register CPLD access */
481         iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
482
483         /* register CPLD's IRQ controller */
484         pcm990_init_irq();
485
486 #ifndef CONFIG_PCM990_DISPLAY_NONE
487         set_pxa_fb_info(&pcm990_fbinfo);
488 #endif
489         platform_device_register(&pcm990_backlight_device);
490
491         /* MMC */
492         pxa_set_mci_info(&pcm990_mci_platform_data);
493
494         /* USB host */
495         pxa_set_ohci_info(&pcm990_ohci_platform_data);
496
497         pxa_set_i2c_info(NULL);
498         pxa_set_ac97_info(NULL);
499
500 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
501         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
502
503         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
504 #endif
505
506         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
507 }