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 desc->chip->ack(irq); /* clear our parent IRQ */
263 if (likely(pending)) {
264 irq = PCM027_IRQ(0) + __ffs(pending);
265 generic_handle_irq(irq);
267 pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
271 static void __init pcm990_init_irq(void)
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);
282 PCM990_INTMSKENA = 0x00; /* disable all Interrupts */
283 PCM990_INTSETCLR = 0xFF;
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);
289 static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
294 err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
295 "MMC card detect", data);
297 printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
298 "card detect IRQ\n");
303 static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
305 struct pxamci_platform_data *p_d = dev->platform_data;
307 if ((1 << vdd) & p_d->ocr_mask)
308 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
311 __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
312 ~PCM990_CTRL_MMC2PWR;
315 static void pcm990_mci_exit(struct device *dev, void *data)
317 free_irq(PCM027_MMCDET_IRQ, data);
320 #define MSECS_PER_JIFFY (1000/HZ)
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 .gpio_card_detect = -1,
333 static struct pxaohci_platform_data pcm990_ohci_platform_data = {
334 .port_mode = PMM_PERPORT_MODE,
335 .flags = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
336 .power_on_delay = 10,
340 * PXA27x Camera specific stuff
342 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
343 static unsigned long pcm990_camera_pin_config[] = {
362 * CICR4: PCLK_EN: Pixel clock is supplied by the sensor
363 * MCLK_EN: Master clock is generated by PXA
364 * PCP: Data sampled on the falling edge of pixel clock
366 struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
367 .flags = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
368 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
372 #include <linux/i2c/pca953x.h>
374 static struct pca953x_platform_data pca9536_data = {
375 .gpio_base = NR_BUILTIN_GPIO,
378 static int gpio_bus_switch = -EINVAL;
380 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
383 if (gpio_bus_switch < 0) {
384 if (flags == SOCAM_DATAWIDTH_10)
390 if (flags & SOCAM_DATAWIDTH_8)
391 gpio_set_value(gpio_bus_switch, 1);
393 gpio_set_value(gpio_bus_switch, 0);
398 static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
402 if (gpio_bus_switch < 0) {
403 ret = gpio_request(NR_BUILTIN_GPIO, "camera");
405 gpio_bus_switch = NR_BUILTIN_GPIO;
406 gpio_direction_output(gpio_bus_switch, 0);
410 if (gpio_bus_switch >= 0)
411 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
413 return SOCAM_DATAWIDTH_10;
416 static void pcm990_camera_free_bus(struct soc_camera_link *link)
418 if (gpio_bus_switch < 0)
421 gpio_free(gpio_bus_switch);
422 gpio_bus_switch = -EINVAL;
425 /* Board I2C devices. */
426 static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
428 /* Must initialize before the camera(s) */
429 I2C_BOARD_INFO("pca9536", 0x41),
430 .platform_data = &pca9536_data,
434 static struct i2c_board_info pcm990_camera_i2c[] = {
436 I2C_BOARD_INFO("mt9v022", 0x48),
438 I2C_BOARD_INFO("mt9m001", 0x5d),
442 static struct soc_camera_link iclink[] = {
444 .bus_id = 0, /* Must match with the camera ID */
445 .board_info = &pcm990_camera_i2c[0],
447 .query_bus_param = pcm990_camera_query_bus_param,
448 .set_bus_param = pcm990_camera_set_bus_param,
449 .free_bus = pcm990_camera_free_bus,
450 .module_name = "mt9v022",
452 .bus_id = 0, /* Must match with the camera ID */
453 .board_info = &pcm990_camera_i2c[1],
455 .query_bus_param = pcm990_camera_query_bus_param,
456 .set_bus_param = pcm990_camera_set_bus_param,
457 .free_bus = pcm990_camera_free_bus,
458 .module_name = "mt9m001",
462 static struct platform_device pcm990_camera[] = {
464 .name = "soc-camera-pdrv",
467 .platform_data = &iclink[0],
470 .name = "soc-camera-pdrv",
473 .platform_data = &iclink[1],
477 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
480 * enable generic access to the base board control CPLDs U6 and U7
482 static struct map_desc pcm990_io_desc[] __initdata = {
484 .virtual = PCM990_CTRL_BASE,
485 .pfn = __phys_to_pfn(PCM990_CTRL_PHYS),
486 .length = PCM990_CTRL_SIZE,
487 .type = MT_DEVICE /* CPLD */
489 .virtual = PCM990_CF_PLD_BASE,
490 .pfn = __phys_to_pfn(PCM990_CF_PLD_PHYS),
491 .length = PCM990_CF_PLD_SIZE,
492 .type = MT_DEVICE /* CPLD */
497 * system init for baseboard usage. Will be called by pcm027 init.
499 * Add platform devices present on this baseboard and init
500 * them from CPU side as far as required to use them later on
502 void __init pcm990_baseboard_init(void)
504 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
506 /* register CPLD access */
507 iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
509 /* register CPLD's IRQ controller */
512 #ifndef CONFIG_PCM990_DISPLAY_NONE
513 set_pxa_fb_info(&pcm990_fbinfo);
515 platform_device_register(&pcm990_backlight_device);
518 pxa_set_mci_info(&pcm990_mci_platform_data);
521 pxa_set_ohci_info(&pcm990_ohci_platform_data);
523 pxa_set_i2c_info(NULL);
524 pxa_set_ac97_info(NULL);
526 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
527 pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
528 pxa_set_camera_info(&pcm990_pxacamera_platform_data);
530 i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
532 platform_device_register(&pcm990_camera[0]);
533 platform_device_register(&pcm990_camera[1]);
536 printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");