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Linux/arch/arm/mach-pxa/pcm990-baseboard.c

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  *  arch/arm/mach-pxa/pcm990-baseboard.c
  4  *  Support for the Phytec phyCORE-PXA270 Development Platform (PCM-990).
  5  *
  6  *  Refer
  7  *   http://www.phytec.com/products/rdk/ARM-XScale/phyCORE-XScale-PXA270.html
  8  *  for additional hardware info
  9  *
 10  *  Author:     Juergen Kilb
 11  *  Created:    April 05, 2005
 12  *  Copyright:  Phytec Messtechnik GmbH
 13  *  e-Mail:     armlinux@phytec.de
 14  *
 15  *  based on Intel Mainstone Board
 16  *
 17  *  Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
 18  */
 19 #include <linux/gpio.h>
 20 #include <linux/irq.h>
 21 #include <linux/platform_device.h>
 22 #include <linux/i2c.h>
 23 #include <linux/platform_data/i2c-pxa.h>
 24 #include <linux/pwm.h>
 25 #include <linux/pwm_backlight.h>
 26 
 27 #include <media/i2c/mt9v022.h>
 28 #include <media/soc_camera.h>
 29 
 30 #include <linux/platform_data/media/camera-pxa.h>
 31 #include <asm/mach/map.h>
 32 #include "pxa27x.h"
 33 #include <mach/audio.h>
 34 #include <linux/platform_data/mmc-pxamci.h>
 35 #include <linux/platform_data/usb-ohci-pxa27x.h>
 36 #include "pcm990_baseboard.h"
 37 #include <linux/platform_data/video-pxafb.h>
 38 
 39 #include "devices.h"
 40 #include "generic.h"
 41 
 42 static unsigned long pcm990_pin_config[] __initdata = {
 43         /* MMC */
 44         GPIO32_MMC_CLK,
 45         GPIO112_MMC_CMD,
 46         GPIO92_MMC_DAT_0,
 47         GPIO109_MMC_DAT_1,
 48         GPIO110_MMC_DAT_2,
 49         GPIO111_MMC_DAT_3,
 50         /* USB */
 51         GPIO88_USBH1_PWR,
 52         GPIO89_USBH1_PEN,
 53         /* PWM0 */
 54         GPIO16_PWM0_OUT,
 55 
 56         /* I2C */
 57         GPIO117_I2C_SCL,
 58         GPIO118_I2C_SDA,
 59 
 60         /* AC97 */
 61         GPIO28_AC97_BITCLK,
 62         GPIO29_AC97_SDATA_IN_0,
 63         GPIO30_AC97_SDATA_OUT,
 64         GPIO31_AC97_SYNC,
 65 };
 66 
 67 static void __iomem *pcm990_cpld_base;
 68 
 69 static u8 pcm990_cpld_readb(unsigned int reg)
 70 {
 71         return readb(pcm990_cpld_base + reg);
 72 }
 73 
 74 static void pcm990_cpld_writeb(u8 value, unsigned int reg)
 75 {
 76         writeb(value, pcm990_cpld_base + reg);
 77 }
 78 
 79 /*
 80  * pcm990_lcd_power - control power supply to the LCD
 81  * @on: 0 = switch off, 1 = switch on
 82  *
 83  * Called by the pxafb driver
 84  */
 85 #ifndef CONFIG_PCM990_DISPLAY_NONE
 86 static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
 87 {
 88         if (on) {
 89                 /* enable LCD-Latches
 90                  * power on LCD
 91                  */
 92                 pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON,
 93                                 PCM990_CTRL_REG3);
 94         } else {
 95                 /* disable LCD-Latches
 96                  * power off LCD
 97                  */
 98                 pcm990_cpld_writeb(0, PCM990_CTRL_REG3);
 99         }
100 }
101 #endif
102 
103 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
104 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
105         .pixclock               = 28000,
106         .xres                   = 640,
107         .yres                   = 480,
108         .bpp                    = 16,
109         .hsync_len              = 20,
110         .left_margin            = 103,
111         .right_margin           = 47,
112         .vsync_len              = 6,
113         .upper_margin           = 28,
114         .lower_margin           = 5,
115         .sync                   = 0,
116         .cmap_greyscale         = 0,
117 };
118 
119 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
120         .modes                  = &fb_info_sharp_lq084v1dg21,
121         .num_modes              = 1,
122         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
123         .pxafb_lcd_power        = pcm990_lcd_power,
124 };
125 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
126 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
127         .pixclock               = 39720,
128         .xres                   = 640,
129         .yres                   = 480,
130         .bpp                    = 16,
131         .hsync_len              = 32,
132         .left_margin            = 16,
133         .right_margin           = 48,
134         .vsync_len              = 2,
135         .upper_margin           = 12,
136         .lower_margin           = 17,
137         .sync                   = 0,
138         .cmap_greyscale         = 0,
139 };
140 
141 static struct pxafb_mach_info pcm990_fbinfo __initdata = {
142         .modes                  = &fb_info_nec_nl6448bc20_18d,
143         .num_modes              = 1,
144         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
145         .pxafb_lcd_power        = pcm990_lcd_power,
146 };
147 #endif
148 
149 static struct pwm_lookup pcm990_pwm_lookup[] = {
150         PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78770,
151                    PWM_POLARITY_NORMAL),
152 };
153 
154 static struct platform_pwm_backlight_data pcm990_backlight_data = {
155         .max_brightness = 1023,
156         .dft_brightness = 1023,
157 };
158 
159 static 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 
255 static unsigned long pcm990_irq_enabled;
256 
257 static 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 
266 static 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 
282 static struct irq_chip pcm990_irq_chip = {
283         .irq_mask_ack   = pcm990_mask_ack_irq,
284         .irq_unmask     = pcm990_unmask_irq,
285 };
286 
287 static void pcm990_irq_handler(struct irq_desc *desc)
288 {
289         unsigned int irq;
290         unsigned long pending;
291 
292         pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
293         pending &= pcm990_irq_enabled;
294 
295         do {
296                 /* clear our parent IRQ */
297                 desc->irq_data.chip->irq_ack(&desc->irq_data);
298                 if (likely(pending)) {
299                         irq = PCM027_IRQ(0) + __ffs(pending);
300                         generic_handle_irq(irq);
301                 }
302                 pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
303                 pending &= pcm990_irq_enabled;
304         } while (pending);
305 }
306 
307 static void __init pcm990_init_irq(void)
308 {
309         int irq;
310 
311         /* setup extra PCM990 irqs */
312         for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
313                 irq_set_chip_and_handler(irq, &pcm990_irq_chip,
314                                          handle_level_irq);
315                 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
316         }
317 
318         /* disable all Interrupts */
319         pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA);
320         pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR);
321 
322         irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
323         irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
324 }
325 
326 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
327                         void *data)
328 {
329         int err;
330 
331         err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0,
332                              "MMC card detect", data);
333         if (err)
334                 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
335                                 "card detect IRQ\n");
336 
337         return err;
338 }
339 
340 static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
341 {
342         struct pxamci_platform_data *p_d = dev->platform_data;
343         u8 val;
344 
345         val = pcm990_cpld_readb(PCM990_CTRL_REG5);
346 
347         if ((1 << vdd) & p_d->ocr_mask)
348                 val |= PCM990_CTRL_MMC2PWR;
349         else
350                 val &= ~PCM990_CTRL_MMC2PWR;
351 
352         pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
353         return 0;
354 }
355 
356 static void pcm990_mci_exit(struct device *dev, void *data)
357 {
358         free_irq(PCM027_MMCDET_IRQ, data);
359 }
360 
361 #define MSECS_PER_JIFFY (1000/HZ)
362 
363 static struct pxamci_platform_data pcm990_mci_platform_data = {
364         .detect_delay_ms        = 250,
365         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
366         .init                   = pcm990_mci_init,
367         .setpower               = pcm990_mci_setpower,
368         .exit                   = pcm990_mci_exit,
369 };
370 
371 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
372         .port_mode      = PMM_PERPORT_MODE,
373         .flags          = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
374         .power_on_delay = 10,
375 };
376 
377 /*
378  * PXA27x Camera specific stuff
379  */
380 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
381 static unsigned long pcm990_camera_pin_config[] = {
382         /* CIF */
383         GPIO98_CIF_DD_0,
384         GPIO105_CIF_DD_1,
385         GPIO104_CIF_DD_2,
386         GPIO103_CIF_DD_3,
387         GPIO95_CIF_DD_4,
388         GPIO94_CIF_DD_5,
389         GPIO93_CIF_DD_6,
390         GPIO108_CIF_DD_7,
391         GPIO107_CIF_DD_8,
392         GPIO106_CIF_DD_9,
393         GPIO42_CIF_MCLK,
394         GPIO45_CIF_PCLK,
395         GPIO43_CIF_FV,
396         GPIO44_CIF_LV,
397 };
398 
399 /*
400  * CICR4: PCLK_EN:      Pixel clock is supplied by the sensor
401  *      MCLK_EN:        Master clock is generated by PXA
402  *      PCP:            Data sampled on the falling edge of pixel clock
403  */
404 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
405         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
406                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
407         .mclk_10khz = 1000,
408 };
409 
410 #include <linux/platform_data/pca953x.h>
411 
412 static struct pca953x_platform_data pca9536_data = {
413         .gpio_base      = PXA_NR_BUILTIN_GPIO,
414 };
415 
416 static int gpio_bus_switch = -EINVAL;
417 
418 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
419                                        unsigned long flags)
420 {
421         if (gpio_bus_switch < 0) {
422                 if (flags == SOCAM_DATAWIDTH_10)
423                         return 0;
424                 else
425                         return -EINVAL;
426         }
427 
428         if (flags & SOCAM_DATAWIDTH_8)
429                 gpio_set_value_cansleep(gpio_bus_switch, 1);
430         else
431                 gpio_set_value_cansleep(gpio_bus_switch, 0);
432 
433         return 0;
434 }
435 
436 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
437 {
438         int ret;
439 
440         if (gpio_bus_switch < 0) {
441                 ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera");
442                 if (!ret) {
443                         gpio_bus_switch = PXA_NR_BUILTIN_GPIO;
444                         gpio_direction_output(gpio_bus_switch, 0);
445                 }
446         }
447 
448         if (gpio_bus_switch >= 0)
449                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
450         else
451                 return SOCAM_DATAWIDTH_10;
452 }
453 
454 static void pcm990_camera_free_bus(struct soc_camera_link *link)
455 {
456         if (gpio_bus_switch < 0)
457                 return;
458 
459         gpio_free(gpio_bus_switch);
460         gpio_bus_switch = -EINVAL;
461 }
462 
463 /* Board I2C devices. */
464 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
465         {
466                 /* Must initialize before the camera(s) */
467                 I2C_BOARD_INFO("pca9536", 0x41),
468                 .platform_data = &pca9536_data,
469         },
470 };
471 
472 static struct mt9v022_platform_data mt9v022_pdata = {
473         .y_skip_top = 1,
474 };
475 
476 static struct i2c_board_info pcm990_camera_i2c[] = {
477         {
478                 I2C_BOARD_INFO("mt9v022", 0x48),
479         }, {
480                 I2C_BOARD_INFO("mt9m001", 0x5d),
481         },
482 };
483 
484 static struct soc_camera_link iclink[] = {
485         {
486                 .bus_id                 = 0, /* Must match with the camera ID */
487                 .board_info             = &pcm990_camera_i2c[0],
488                 .priv                   = &mt9v022_pdata,
489                 .i2c_adapter_id         = 0,
490                 .query_bus_param        = pcm990_camera_query_bus_param,
491                 .set_bus_param          = pcm990_camera_set_bus_param,
492                 .free_bus               = pcm990_camera_free_bus,
493         }, {
494                 .bus_id                 = 0, /* Must match with the camera ID */
495                 .board_info             = &pcm990_camera_i2c[1],
496                 .i2c_adapter_id         = 0,
497                 .query_bus_param        = pcm990_camera_query_bus_param,
498                 .set_bus_param          = pcm990_camera_set_bus_param,
499                 .free_bus               = pcm990_camera_free_bus,
500         },
501 };
502 
503 static struct platform_device pcm990_camera[] = {
504         {
505                 .name   = "soc-camera-pdrv",
506                 .id     = 0,
507                 .dev    = {
508                         .platform_data = &iclink[0],
509                 },
510         }, {
511                 .name   = "soc-camera-pdrv",
512                 .id     = 1,
513                 .dev    = {
514                         .platform_data = &iclink[1],
515                 },
516         },
517 };
518 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
519 
520 /*
521  * system init for baseboard usage. Will be called by pcm027 init.
522  *
523  * Add platform devices present on this baseboard and init
524  * them from CPU side as far as required to use them later on
525  */
526 void __init pcm990_baseboard_init(void)
527 {
528         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
529 
530         pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE);
531         if (!pcm990_cpld_base) {
532                 pr_err("pcm990: failed to ioremap cpld\n");
533                 return;
534         }
535 
536         /* register CPLD's IRQ controller */
537         pcm990_init_irq();
538 
539 #ifndef CONFIG_PCM990_DISPLAY_NONE
540         pxa_set_fb_info(NULL, &pcm990_fbinfo);
541 #endif
542         pwm_add_table(pcm990_pwm_lookup, ARRAY_SIZE(pcm990_pwm_lookup));
543         platform_device_register(&pcm990_backlight_device);
544 
545         /* MMC */
546         pxa_set_mci_info(&pcm990_mci_platform_data);
547 
548         /* USB host */
549         pxa_set_ohci_info(&pcm990_ohci_platform_data);
550 
551         pxa_set_i2c_info(NULL);
552         pxa_set_ac97_info(NULL);
553 
554 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
555         pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
556         pxa_set_camera_info(&pcm990_pxacamera_platform_data);
557 
558         i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
559 
560         platform_device_register(&pcm990_camera[0]);
561         platform_device_register(&pcm990_camera[1]);
562 #endif
563 
564         printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
565 }
566 

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