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1 /*
2  *  linux/arch/arm/mach-pxa/trizeps4.c
3  *
4  *  Support for the Keith und Koep Trizeps4 Module Platform.
5  *
6  *  Author:	Jürgen Schindele
7  *  Created:	20 02, 2006
8  *  Copyright:	Jürgen Schindele
9  *
10  *  This program is free software; you can redistribute it and/or modify
11  *  it under the terms of the GNU General Public License version 2 as
12  *  published by the Free Software Foundation.
13  */
14 
15 #include <linux/init.h>
16 #include <linux/kernel.h>
17 #include <linux/platform_device.h>
18 #include <linux/interrupt.h>
19 #include <linux/export.h>
20 #include <linux/sched.h>
21 #include <linux/bitops.h>
22 #include <linux/fb.h>
23 #include <linux/ioport.h>
24 #include <linux/delay.h>
25 #include <linux/gpio.h>
26 #include <linux/dm9000.h>
27 #include <linux/mtd/physmap.h>
28 #include <linux/mtd/partitions.h>
29 #include <linux/i2c/pxa-i2c.h>
30 
31 #include <asm/types.h>
32 #include <asm/setup.h>
33 #include <asm/memory.h>
34 #include <asm/mach-types.h>
35 #include <asm/irq.h>
36 #include <asm/sizes.h>
37 
38 #include <asm/mach/arch.h>
39 #include <asm/mach/map.h>
40 #include <asm/mach/irq.h>
41 #include <asm/mach/flash.h>
42 
43 #include <mach/pxa27x.h>
44 #include <mach/trizeps4.h>
45 #include <mach/audio.h>
46 #include <linux/platform_data/video-pxafb.h>
47 #include <linux/platform_data/mmc-pxamci.h>
48 #include <linux/platform_data/irda-pxaficp.h>
49 #include <linux/platform_data/usb-ohci-pxa27x.h>
50 #include <mach/smemc.h>
51 
52 #include "generic.h"
53 #include "devices.h"
54 
55 /*	comment out the following line if you want to use the
56  *	Standard UART from PXA for serial / irda transmission
57  *	and acivate it if you have status leds connected */
58 #define STATUS_LEDS_ON_STUART_PINS 1
59 
60 /*****************************************************************************
61  * MultiFunctionPins of CPU
62  *****************************************************************************/
63 static unsigned long trizeps4_pin_config[] __initdata = {
64 	/* Chip Selects */
65 	GPIO15_nCS_1,		/* DiskOnChip CS */
66 	GPIO93_GPIO,		/* TRIZEPS4_DOC_IRQ */
67 	GPIO94_GPIO,		/* DOC lock */
68 
69 	GPIO78_nCS_2,		/* DM9000 CS */
70 	GPIO101_GPIO,		/* TRIZEPS4_ETH_IRQ */
71 
72 	GPIO79_nCS_3,		/* Logic CS */
73 	GPIO0_GPIO | WAKEUP_ON_EDGE_RISE,	/* Logic irq */
74 
75 	/* AC97 */
76 	GPIO28_AC97_BITCLK,
77 	GPIO29_AC97_SDATA_IN_0,
78 	GPIO30_AC97_SDATA_OUT,
79 	GPIO31_AC97_SYNC,
80 
81 	/* LCD - 16bpp Active TFT */
82 	GPIOxx_LCD_TFT_16BPP,
83 
84 	/* UART */
85 	GPIO9_FFUART_CTS,
86 	GPIO10_FFUART_DCD,
87 	GPIO16_FFUART_TXD,
88 	GPIO33_FFUART_DSR,
89 	GPIO38_FFUART_RI,
90 	GPIO82_FFUART_DTR,
91 	GPIO83_FFUART_RTS,
92 	GPIO96_FFUART_RXD,
93 
94 	GPIO42_BTUART_RXD,
95 	GPIO43_BTUART_TXD,
96 	GPIO44_BTUART_CTS,
97 	GPIO45_BTUART_RTS,
98 #ifdef STATUS_LEDS_ON_STUART_PINS
99 	GPIO46_GPIO,
100 	GPIO47_GPIO,
101 #else
102 	GPIO46_STUART_RXD,
103 	GPIO47_STUART_TXD,
104 #endif
105 	/* PCMCIA */
106 	GPIO11_GPIO,			/* TRIZEPS4_CD_IRQ */
107 	GPIO13_GPIO,			/* TRIZEPS4_READY_NINT */
108 	GPIO48_nPOE,
109 	GPIO49_nPWE,
110 	GPIO50_nPIOR,
111 	GPIO51_nPIOW,
112 	GPIO54_nPCE_2,
113 	GPIO55_nPREG,
114 	GPIO56_nPWAIT,
115 	GPIO57_nIOIS16,
116 	GPIO102_nPCE_1,
117 	GPIO104_PSKTSEL,
118 
119 	/* MultiMediaCard */
120 	GPIO32_MMC_CLK,
121 	GPIO92_MMC_DAT_0,
122 	GPIO109_MMC_DAT_1,
123 	GPIO110_MMC_DAT_2,
124 	GPIO111_MMC_DAT_3,
125 	GPIO112_MMC_CMD,
126 	GPIO12_GPIO,			/* TRIZEPS4_MMC_IRQ */
127 
128 	/* USB OHCI */
129 	GPIO88_USBH1_PWR,		/* USBHPWR1 */
130 	GPIO89_USBH1_PEN,		/* USBHPEN1 */
131 
132 	/* I2C */
133 	GPIO117_I2C_SCL,
134 	GPIO118_I2C_SDA,
135 };
136 
137 static unsigned long trizeps4wl_pin_config[] __initdata = {
138 	/* SSP 2 */
139 	GPIO14_SSP2_SFRM,
140 	GPIO19_SSP2_SCLK,
141 	GPIO53_GPIO,			/* TRIZEPS4_SPI_IRQ */
142 	GPIO86_SSP2_RXD,
143 	GPIO87_SSP2_TXD,
144 };
145 
146 /****************************************************************************
147  * ONBOARD FLASH
148  ****************************************************************************/
149 static struct mtd_partition trizeps4_partitions[] = {
150 	{
151 		.name =		"Bootloader",
152 		.offset =	0x00000000,
153 		.size =		0x00040000,
154 		.mask_flags =	MTD_WRITEABLE  /* force read-only */
155 	}, {
156 		.name =		"Backup",
157 		.offset =	0x00040000,
158 		.size =		0x00040000,
159 	}, {
160 		.name =		"Image",
161 		.offset =	0x00080000,
162 		.size =		0x01080000,
163 	}, {
164 		.name =		"IPSM",
165 		.offset =	0x01100000,
166 		.size =		0x00e00000,
167 	}, {
168 		.name =		"Registry",
169 		.offset =	0x01f00000,
170 		.size =		MTDPART_SIZ_FULL,
171 	}
172 };
173 
174 static struct physmap_flash_data trizeps4_flash_data[] = {
175 	{
176 		.width		= 4,			/* bankwidth in bytes */
177 		.parts		= trizeps4_partitions,
178 		.nr_parts	= ARRAY_SIZE(trizeps4_partitions)
179 	}
180 };
181 
182 static struct resource flash_resource = {
183 	.start	= PXA_CS0_PHYS,
184 	.end	= PXA_CS0_PHYS + SZ_32M - 1,
185 	.flags	= IORESOURCE_MEM,
186 };
187 
188 static struct platform_device flash_device = {
189 	.name		= "physmap-flash",
190 	.id		= 0,
191 	.dev = {
192 		.platform_data = trizeps4_flash_data,
193 	},
194 	.resource = &flash_resource,
195 	.num_resources = 1,
196 };
197 
198 /****************************************************************************
199  * DAVICOM DM9000 Ethernet
200  ****************************************************************************/
201 static struct resource dm9000_resources[] = {
202 	[0] = {
203 		.start	= TRIZEPS4_ETH_PHYS+0x300,
204 		.end	= TRIZEPS4_ETH_PHYS+0x400-1,
205 		.flags	= IORESOURCE_MEM,
206 	},
207 	[1] = {
208 		.start	= TRIZEPS4_ETH_PHYS+0x8300,
209 		.end	= TRIZEPS4_ETH_PHYS+0x8400-1,
210 		.flags	= IORESOURCE_MEM,
211 	},
212 	[2] = {
213 		.start	= TRIZEPS4_ETH_IRQ,
214 		.end	= TRIZEPS4_ETH_IRQ,
215 		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
216 	},
217 };
218 
219 static struct dm9000_plat_data tri_dm9000_platdata = {
220 	.flags		= DM9000_PLATF_32BITONLY,
221 };
222 
223 static struct platform_device dm9000_device = {
224 	.name		= "dm9000",
225 	.id		= -1,
226 	.num_resources	= ARRAY_SIZE(dm9000_resources),
227 	.resource	= dm9000_resources,
228 	.dev		= {
229 		.platform_data = &tri_dm9000_platdata,
230 	}
231 };
232 
233 /****************************************************************************
234  * LED's on GPIO pins of PXA
235  ****************************************************************************/
236 static struct gpio_led trizeps4_led[] = {
237 #ifdef STATUS_LEDS_ON_STUART_PINS
238 	{
239 		.name = "led0:orange:heartbeat",	/* */
240 		.default_trigger = "heartbeat",
241 		.gpio = GPIO_HEARTBEAT_LED,
242 		.active_low = 1,
243 	},
244 	{
245 		.name = "led1:yellow:cpubusy",		/* */
246 		.default_trigger = "cpu-busy",
247 		.gpio = GPIO_SYS_BUSY_LED,
248 		.active_low = 1,
249 	},
250 #endif
251 };
252 
253 static struct gpio_led_platform_data trizeps4_led_data = {
254 	.leds		= trizeps4_led,
255 	.num_leds	= ARRAY_SIZE(trizeps4_led),
256 };
257 
258 static struct platform_device leds_devices = {
259 	.name		= "leds-gpio",
260 	.id		= -1,
261 	.dev		= {
262 		.platform_data	= &trizeps4_led_data,
263 	},
264 };
265 
266 static struct platform_device *trizeps4_devices[] __initdata = {
267 	&flash_device,
268 	&dm9000_device,
269 	&leds_devices,
270 };
271 
272 static struct platform_device *trizeps4wl_devices[] __initdata = {
273 	&flash_device,
274 	&leds_devices,
275 };
276 
277 static short trizeps_conxs_bcr;
278 
279 /* PCCARD power switching supports only 3,3V */
board_pcmcia_power(int power)280 void board_pcmcia_power(int power)
281 {
282 	if (power) {
283 		/* switch power on, put in reset and enable buffers */
284 		trizeps_conxs_bcr |= power;
285 		trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
286 		trizeps_conxs_bcr &= ~ConXS_BCR_CF_BUF_EN;
287 		BCR_writew(trizeps_conxs_bcr);
288 		/* wait a little */
289 		udelay(2000);
290 		/* take reset away */
291 		trizeps_conxs_bcr &= ~ConXS_BCR_CF_RESET;
292 		BCR_writew(trizeps_conxs_bcr);
293 		udelay(2000);
294 	} else {
295 		/* put in reset */
296 		trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
297 		BCR_writew(trizeps_conxs_bcr);
298 		udelay(1000);
299 		/* switch power off */
300 		trizeps_conxs_bcr &= ~0xf;
301 		BCR_writew(trizeps_conxs_bcr);
302 	}
303 	pr_debug("%s: o%s 0x%x\n", __func__, power ? "n" : "ff",
304 			trizeps_conxs_bcr);
305 }
306 EXPORT_SYMBOL(board_pcmcia_power);
307 
308 /* backlight power switching for LCD panel */
board_backlight_power(int on)309 static void board_backlight_power(int on)
310 {
311 	if (on)
312 		trizeps_conxs_bcr |= ConXS_BCR_L_DISP;
313 	else
314 		trizeps_conxs_bcr &= ~ConXS_BCR_L_DISP;
315 
316 	pr_debug("%s: o%s 0x%x\n", __func__, on ? "n" : "ff",
317 			trizeps_conxs_bcr);
318 	BCR_writew(trizeps_conxs_bcr);
319 }
320 
321 /* a I2C based RTC is known on CONXS board */
322 static struct i2c_board_info trizeps4_i2c_devices[] __initdata = {
323 	{ I2C_BOARD_INFO("rtc-pcf8593", 0x51) }
324 };
325 
326 /****************************************************************************
327  * MMC card slot external to module
328  ****************************************************************************/
trizeps4_mci_init(struct device * dev,irq_handler_t mci_detect_int,void * data)329 static int trizeps4_mci_init(struct device *dev, irq_handler_t mci_detect_int,
330 		void *data)
331 {
332 	int err;
333 
334 	err = request_irq(TRIZEPS4_MMC_IRQ, mci_detect_int,
335 			  IRQF_TRIGGER_RISING, "MMC card detect", data);
336 	if (err) {
337 		printk(KERN_ERR "trizeps4_mci_init: MMC/SD: can't request"
338 						"MMC card detect IRQ\n");
339 		return -1;
340 	}
341 	return 0;
342 }
343 
trizeps4_mci_exit(struct device * dev,void * data)344 static void trizeps4_mci_exit(struct device *dev, void *data)
345 {
346 	free_irq(TRIZEPS4_MMC_IRQ, data);
347 }
348 
349 static struct pxamci_platform_data trizeps4_mci_platform_data = {
350 	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
351 	.detect_delay_ms= 10,
352 	.init 		= trizeps4_mci_init,
353 	.exit		= trizeps4_mci_exit,
354 	.get_ro		= NULL,	/* write-protection not supported */
355 	.setpower 	= NULL,	/* power-switching not supported */
356 	.gpio_card_detect = -1,
357 	.gpio_card_ro	= -1,
358 	.gpio_power	= -1,
359 };
360 
361 /****************************************************************************
362  * IRDA mode switching on stuart
363  ****************************************************************************/
364 #ifndef STATUS_LEDS_ON_STUART_PINS
365 static short trizeps_conxs_ircr;
366 
trizeps4_irda_startup(struct device * dev)367 static int trizeps4_irda_startup(struct device *dev)
368 {
369 	trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
370 	IRCR_writew(trizeps_conxs_ircr);
371 	return 0;
372 }
373 
trizeps4_irda_shutdown(struct device * dev)374 static void trizeps4_irda_shutdown(struct device *dev)
375 {
376 	trizeps_conxs_ircr |= ConXS_IRCR_SD;
377 	IRCR_writew(trizeps_conxs_ircr);
378 }
379 
trizeps4_irda_transceiver_mode(struct device * dev,int mode)380 static void trizeps4_irda_transceiver_mode(struct device *dev, int mode)
381 {
382 	unsigned long flags;
383 
384 	local_irq_save(flags);
385 	/* Switch mode */
386 	if (mode & IR_SIRMODE)
387 		trizeps_conxs_ircr &= ~ConXS_IRCR_MODE;	/* Slow mode */
388 	else if (mode & IR_FIRMODE)
389 		trizeps_conxs_ircr |= ConXS_IRCR_MODE;	/* Fast mode */
390 
391 	/* Switch power */
392 	if (mode & IR_OFF)
393 		trizeps_conxs_ircr |= ConXS_IRCR_SD;
394 	else
395 		trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
396 
397 	IRCR_writew(trizeps_conxs_ircr);
398 	local_irq_restore(flags);
399 
400 	pxa2xx_transceiver_mode(dev, mode);
401 }
402 
403 static struct pxaficp_platform_data trizeps4_ficp_platform_data = {
404 	.gpio_pwdown		= -1,
405 	.transceiver_cap	= IR_SIRMODE | IR_FIRMODE | IR_OFF,
406 	.transceiver_mode	= trizeps4_irda_transceiver_mode,
407 	.startup		= trizeps4_irda_startup,
408 	.shutdown		= trizeps4_irda_shutdown,
409 };
410 #endif
411 
412 /****************************************************************************
413  * OHCI USB port
414  ****************************************************************************/
415 static struct pxaohci_platform_data trizeps4_ohci_platform_data = {
416 	.port_mode	= PMM_PERPORT_MODE,
417 	.flags		= ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
418 };
419 
420 static struct map_desc trizeps4_io_desc[] __initdata = {
421 	{ 	/* ConXS CFSR */
422 		.virtual	= TRIZEPS4_CFSR_VIRT,
423 		.pfn		= __phys_to_pfn(TRIZEPS4_CFSR_PHYS),
424 		.length		= 0x00001000,
425 		.type		= MT_DEVICE
426 	},
427 	{	/* ConXS BCR */
428 		.virtual	= TRIZEPS4_BOCR_VIRT,
429 		.pfn		= __phys_to_pfn(TRIZEPS4_BOCR_PHYS),
430 		.length		= 0x00001000,
431 		.type		= MT_DEVICE
432 	},
433 	{ 	/* ConXS IRCR */
434 		.virtual	= TRIZEPS4_IRCR_VIRT,
435 		.pfn		= __phys_to_pfn(TRIZEPS4_IRCR_PHYS),
436 		.length		= 0x00001000,
437 		.type		= MT_DEVICE
438 	},
439 	{	/* ConXS DCR */
440 		.virtual	= TRIZEPS4_DICR_VIRT,
441 		.pfn		= __phys_to_pfn(TRIZEPS4_DICR_PHYS),
442 		.length		= 0x00001000,
443 		.type		= MT_DEVICE
444 	},
445 	{	/* ConXS UPSR */
446 		.virtual	= TRIZEPS4_UPSR_VIRT,
447 		.pfn		= __phys_to_pfn(TRIZEPS4_UPSR_PHYS),
448 		.length		= 0x00001000,
449 		.type		= MT_DEVICE
450 	}
451 };
452 
453 static struct pxafb_mode_info sharp_lcd_mode = {
454 	.pixclock	= 78000,
455 	.xres		= 640,
456 	.yres		= 480,
457 	.bpp		= 8,
458 	.hsync_len	= 4,
459 	.left_margin	= 4,
460 	.right_margin	= 4,
461 	.vsync_len	= 2,
462 	.upper_margin	= 0,
463 	.lower_margin	= 0,
464 	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
465 	.cmap_greyscale	= 0,
466 };
467 
468 static struct pxafb_mach_info sharp_lcd = {
469 	.modes		= &sharp_lcd_mode,
470 	.num_modes	= 1,
471 	.lcd_conn	= LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL,
472 	.cmap_inverse	= 0,
473 	.cmap_static	= 0,
474 	.pxafb_backlight_power = board_backlight_power,
475 };
476 
477 static struct pxafb_mode_info toshiba_lcd_mode = {
478 	.pixclock	= 39720,
479 	.xres		= 640,
480 	.yres		= 480,
481 	.bpp		= 8,
482 	.hsync_len	= 63,
483 	.left_margin	= 12,
484 	.right_margin	= 12,
485 	.vsync_len	= 4,
486 	.upper_margin	= 32,
487 	.lower_margin	= 10,
488 	.sync		= 0,
489 	.cmap_greyscale	= 0,
490 };
491 
492 static struct pxafb_mach_info toshiba_lcd = {
493 	.modes		= &toshiba_lcd_mode,
494 	.num_modes	= 1,
495 	.lcd_conn	= (LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL),
496 	.cmap_inverse	= 0,
497 	.cmap_static	= 0,
498 	.pxafb_backlight_power = board_backlight_power,
499 };
500 
trizeps4_init(void)501 static void __init trizeps4_init(void)
502 {
503 	pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4_pin_config));
504 	if (machine_is_trizeps4wl()) {
505 		pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4wl_pin_config));
506 		platform_add_devices(trizeps4wl_devices,
507 					ARRAY_SIZE(trizeps4wl_devices));
508 	} else {
509 		platform_add_devices(trizeps4_devices,
510 					ARRAY_SIZE(trizeps4_devices));
511 	}
512 
513 	pxa_set_ffuart_info(NULL);
514 	pxa_set_btuart_info(NULL);
515 	pxa_set_stuart_info(NULL);
516 
517 	if (0)	/* dont know how to determine LCD */
518 		pxa_set_fb_info(NULL, &sharp_lcd);
519 	else
520 		pxa_set_fb_info(NULL, &toshiba_lcd);
521 
522 	pxa_set_mci_info(&trizeps4_mci_platform_data);
523 #ifndef STATUS_LEDS_ON_STUART_PINS
524 	pxa_set_ficp_info(&trizeps4_ficp_platform_data);
525 #endif
526 	pxa_set_ohci_info(&trizeps4_ohci_platform_data);
527 	pxa_set_ac97_info(NULL);
528 	pxa_set_i2c_info(NULL);
529 	i2c_register_board_info(0, trizeps4_i2c_devices,
530 					ARRAY_SIZE(trizeps4_i2c_devices));
531 
532 	/* this is the reset value */
533 	trizeps_conxs_bcr = 0x00A0;
534 
535 	BCR_writew(trizeps_conxs_bcr);
536 	board_backlight_power(1);
537 }
538 
trizeps4_map_io(void)539 static void __init trizeps4_map_io(void)
540 {
541 	pxa27x_map_io();
542 	iotable_init(trizeps4_io_desc, ARRAY_SIZE(trizeps4_io_desc));
543 
544 	if ((__raw_readl(MSC0) & 0x8) && (__raw_readl(BOOT_DEF) & 0x1)) {
545 		/* if flash is 16 bit wide its a Trizeps4 WL */
546 		__machine_arch_type = MACH_TYPE_TRIZEPS4WL;
547 		trizeps4_flash_data[0].width = 2;
548 	} else {
549 		/* if flash is 32 bit wide its a Trizeps4 */
550 		__machine_arch_type = MACH_TYPE_TRIZEPS4;
551 		trizeps4_flash_data[0].width = 4;
552 	}
553 }
554 
555 MACHINE_START(TRIZEPS4, "Keith und Koep Trizeps IV module")
556 	/* MAINTAINER("Jürgen Schindele") */
557 	.atag_offset	= 0x100,
558 	.init_machine	= trizeps4_init,
559 	.map_io		= trizeps4_map_io,
560 	.nr_irqs	= PXA_NR_IRQS,
561 	.init_irq	= pxa27x_init_irq,
562 	.handle_irq	= pxa27x_handle_irq,
563 	.init_time	= pxa_timer_init,
564 	.restart	= pxa_restart,
565 MACHINE_END
566 
567 MACHINE_START(TRIZEPS4WL, "Keith und Koep Trizeps IV-WL module")
568 	/* MAINTAINER("Jürgen Schindele") */
569 	.atag_offset	= 0x100,
570 	.init_machine	= trizeps4_init,
571 	.map_io		= trizeps4_map_io,
572 	.nr_irqs	= PXA_NR_IRQS,
573 	.init_irq	= pxa27x_init_irq,
574 	.handle_irq	= pxa27x_handle_irq,
575 	.init_time	= pxa_timer_init,
576 	.restart	= pxa_restart,
577 MACHINE_END
578