2 * arch/arm/mach-pxa/pcm990-baseboard.c
3 * Support for the Phytec phyCORE-PXA270 Development Platform (PCM-990).
6 * http://www.phytec.com/products/rdk/ARM-XScale/phyCORE-XScale-PXA270.html
7 * for additional hardware info
10 * Created: April 05, 2005
11 * Copyright: Phytec Messtechnik GmbH
12 * e-Mail: armlinux@phytec.de
14 * based on Intel Mainstone Board
16 * Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
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.
23 #include <linux/irq.h>
24 #include <linux/platform_device.h>
25 #include <linux/i2c.h>
26 #include <linux/pwm_backlight.h>
28 #include <media/soc_camera.h>
32 #include <mach/camera.h>
33 #include <asm/mach/map.h>
34 #include <mach/pxa27x.h>
35 #include <mach/audio.h>
37 #include <mach/ohci.h>
38 #include <mach/pcm990_baseboard.h>
39 #include <mach/pxafb.h>
44 static unsigned long pcm990_pin_config
[] __initdata
= {
64 * pcm990_lcd_power - control power supply to the LCD
65 * @on: 0 = switch off, 1 = switch on
67 * Called by the pxafb driver
69 #ifndef CONFIG_PCM990_DISPLAY_NONE
70 static void pcm990_lcd_power(int on
, struct fb_var_screeninfo
*var
)
76 __PCM990_CTRL_REG(PCM990_CTRL_PHYS
+ PCM990_CTRL_REG3
) =
77 PCM990_CTRL_LCDPWR
+ PCM990_CTRL_LCDON
;
79 /* disable LCD-Latches
82 __PCM990_CTRL_REG(PCM990_CTRL_PHYS
+ PCM990_CTRL_REG3
) = 0x00;
87 #if defined(CONFIG_PCM990_DISPLAY_SHARP)
88 static struct pxafb_mode_info fb_info_sharp_lq084v1dg21
= {
103 static struct pxafb_mach_info pcm990_fbinfo __initdata
= {
104 .modes
= &fb_info_sharp_lq084v1dg21
,
106 .lcd_conn
= LCD_COLOR_TFT_16BPP
| LCD_PCLK_EDGE_FALL
,
107 .pxafb_lcd_power
= pcm990_lcd_power
,
109 #elif defined(CONFIG_PCM990_DISPLAY_NEC)
110 struct pxafb_mode_info fb_info_nec_nl6448bc20_18d
= {
125 static struct pxafb_mach_info pcm990_fbinfo __initdata
= {
126 .modes
= &fb_info_nec_nl6448bc20_18d
,
128 .lcd_conn
= LCD_COLOR_TFT_16BPP
| LCD_PCLK_EDGE_FALL
,
129 .pxafb_lcd_power
= pcm990_lcd_power
,
133 static struct platform_pwm_backlight_data pcm990_backlight_data
= {
135 .max_brightness
= 1023,
136 .dft_brightness
= 1023,
137 .pwm_period_ns
= 78770,
140 static struct platform_device pcm990_backlight_device
= {
141 .name
= "pwm-backlight",
143 .parent
= &pxa27x_device_pwm0
.dev
,
144 .platform_data
= &pcm990_backlight_data
,
149 * The PCM-990 development baseboard uses PCM-027's hardware in the
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
162 * - GPIO109 is MMDAT1
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
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
187 * - GPIO42 is input BTRXD
188 * - GPIO43 is output BTTXD
189 * - GPIO44 is input BTCTS
190 * - GPIO45 is output BTRTS
192 * - GPIO46 is input STDRXD
193 * - GPIO47 is output STDTXD
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
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
208 * - GPIO81 is output SSPTXD3
209 * - GPIO82 is input SSPRXD3
210 * - GPIO83 is output SSPSFRM
211 * - GPIO84 is output SSPCLK3
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
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
236 static unsigned long pcm990_irq_enabled
;
238 static void pcm990_mask_ack_irq(unsigned int irq
)
240 int pcm990_irq
= (irq
- PCM027_IRQ(0));
241 PCM990_INTMSKENA
= (pcm990_irq_enabled
&= ~(1 << pcm990_irq
));
244 static void pcm990_unmask_irq(unsigned int irq
)
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
));
252 static struct irq_chip pcm990_irq_chip
= {
253 .mask_ack
= pcm990_mask_ack_irq
,
254 .unmask
= pcm990_unmask_irq
,
257 static void pcm990_irq_handler(unsigned int irq
, struct irq_desc
*desc
)
259 unsigned long pending
= (~PCM990_INTSETCLR
) & pcm990_irq_enabled
;
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
);
268 pending
= (~PCM990_INTSETCLR
) & pcm990_irq_enabled
;
272 static void __init
pcm990_init_irq(void)
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
);
283 PCM990_INTMSKENA
= 0x00; /* disable all Interrupts */
284 PCM990_INTSETCLR
= 0xFF;
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
);
290 static int pcm990_mci_init(struct device
*dev
, irq_handler_t mci_detect_int
,
295 err
= request_irq(PCM027_MMCDET_IRQ
, mci_detect_int
, IRQF_DISABLED
,
296 "MMC card detect", data
);
298 printk(KERN_ERR
"pcm990_mci_init: MMC/SD: can't request MMC "
299 "card detect IRQ\n");
304 static void pcm990_mci_setpower(struct device
*dev
, unsigned int vdd
)
306 struct pxamci_platform_data
*p_d
= dev
->platform_data
;
308 if ((1 << vdd
) & p_d
->ocr_mask
)
309 __PCM990_CTRL_REG(PCM990_CTRL_PHYS
+ PCM990_CTRL_REG5
) =
312 __PCM990_CTRL_REG(PCM990_CTRL_PHYS
+ PCM990_CTRL_REG5
) =
313 ~PCM990_CTRL_MMC2PWR
;
316 static void pcm990_mci_exit(struct device
*dev
, void *data
)
318 free_irq(PCM027_MMCDET_IRQ
, data
);
321 #define MSECS_PER_JIFFY (1000/HZ)
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
,
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,
338 * PXA27x Camera specific stuff
340 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
341 static unsigned long pcm990_camera_pin_config
[] = {
359 static int pcm990_pxacamera_init(struct device
*dev
)
361 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config
));
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
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*/,
377 #include <linux/i2c/pca953x.h>
379 static struct pca953x_platform_data pca9536_data
= {
380 .gpio_base
= NR_BUILTIN_GPIO
,
383 static int gpio_bus_switch
= -EINVAL
;
385 static int pcm990_camera_set_bus_param(struct soc_camera_link
*link
,
388 if (gpio_bus_switch
< 0) {
389 if (flags
== SOCAM_DATAWIDTH_10
)
395 if (flags
& SOCAM_DATAWIDTH_8
)
396 gpio_set_value(gpio_bus_switch
, 1);
398 gpio_set_value(gpio_bus_switch
, 0);
403 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link
*link
)
407 if (gpio_bus_switch
< 0) {
408 ret
= gpio_request(NR_BUILTIN_GPIO
, "camera");
410 gpio_bus_switch
= NR_BUILTIN_GPIO
;
411 gpio_direction_output(gpio_bus_switch
, 0);
415 if (gpio_bus_switch
>= 0)
416 return SOCAM_DATAWIDTH_8
| SOCAM_DATAWIDTH_10
;
418 return SOCAM_DATAWIDTH_10
;
421 static void pcm990_camera_free_bus(struct soc_camera_link
*link
)
423 if (gpio_bus_switch
< 0)
426 gpio_free(gpio_bus_switch
);
427 gpio_bus_switch
= -EINVAL
;
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
,
437 /* Board I2C devices. */
438 static struct i2c_board_info __initdata pcm990_i2c_devices
[] = {
440 /* Must initialize before the camera(s) */
441 I2C_BOARD_INFO("pca9536", 0x41),
442 .platform_data
= &pca9536_data
,
444 I2C_BOARD_INFO("mt9v022", 0x48),
445 .platform_data
= &iclink
, /* With extender */
447 I2C_BOARD_INFO("mt9m001", 0x5d),
448 .platform_data
= &iclink
, /* With extender */
451 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
454 * enable generic access to the base board control CPLDs U6 and U7
456 static struct map_desc pcm990_io_desc
[] __initdata
= {
458 .virtual = PCM990_CTRL_BASE
,
459 .pfn
= __phys_to_pfn(PCM990_CTRL_PHYS
),
460 .length
= PCM990_CTRL_SIZE
,
461 .type
= MT_DEVICE
/* CPLD */
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 */
471 * system init for baseboard usage. Will be called by pcm027 init.
473 * Add platform devices present on this baseboard and init
474 * them from CPU side as far as required to use them later on
476 void __init
pcm990_baseboard_init(void)
478 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config
));
480 /* register CPLD access */
481 iotable_init(ARRAY_AND_SIZE(pcm990_io_desc
));
483 /* register CPLD's IRQ controller */
486 #ifndef CONFIG_PCM990_DISPLAY_NONE
487 set_pxa_fb_info(&pcm990_fbinfo
);
489 platform_device_register(&pcm990_backlight_device
);
492 pxa_set_mci_info(&pcm990_mci_platform_data
);
495 pxa_set_ohci_info(&pcm990_ohci_platform_data
);
497 pxa_set_i2c_info(NULL
);
498 pxa_set_ac97_info(NULL
);
500 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
501 pxa_set_camera_info(&pcm990_pxacamera_platform_data
);
503 i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices
));
506 printk(KERN_INFO
"PCM-990 Evaluation baseboard initialized\n");