1/*
2 *  linux/arch/arm/mach-pxa/lubbock.c
3 *
4 *  Support for the Intel DBPXA250 Development Platform.
5 *
6 *  Author:	Nicolas Pitre
7 *  Created:	Jun 15, 2001
8 *  Copyright:	MontaVista Software Inc.
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#include <linux/gpio.h>
15#include <linux/gpio/machine.h>
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/init.h>
19#include <linux/io.h>
20#include <linux/platform_device.h>
21#include <linux/syscore_ops.h>
22#include <linux/major.h>
23#include <linux/fb.h>
24#include <linux/interrupt.h>
25#include <linux/mtd/mtd.h>
26#include <linux/mtd/partitions.h>
27#include <linux/smc91x.h>
28#include <linux/slab.h>
29#include <linux/leds.h>
30
31#include <linux/spi/spi.h>
32#include <linux/spi/ads7846.h>
33#include <linux/spi/pxa2xx_spi.h>
34
35#include <asm/setup.h>
36#include <asm/memory.h>
37#include <asm/mach-types.h>
38#include <mach/hardware.h>
39#include <asm/irq.h>
40#include <asm/sizes.h>
41
42#include <asm/mach/arch.h>
43#include <asm/mach/map.h>
44#include <asm/mach/irq.h>
45#include <asm/mach/flash.h>
46
47#include <asm/hardware/sa1111.h>
48
49#include <mach/pxa25x.h>
50#include <mach/audio.h>
51#include <mach/lubbock.h>
52#include <mach/udc.h>
53#include <linux/platform_data/irda-pxaficp.h>
54#include <linux/platform_data/video-pxafb.h>
55#include <linux/platform_data/mmc-pxamci.h>
56#include <mach/pm.h>
57#include <mach/smemc.h>
58
59#include "generic.h"
60#include "clock.h"
61#include "devices.h"
62
63static unsigned long lubbock_pin_config[] __initdata = {
64	GPIO15_nCS_1,	/* CS1 - Flash */
65	GPIO78_nCS_2,	/* CS2 - Baseboard FGPA */
66	GPIO79_nCS_3,	/* CS3 - SMC ethernet */
67	GPIO80_nCS_4,	/* CS4 - SA1111 */
68
69	/* SSP data pins */
70	GPIO23_SSP1_SCLK,
71	GPIO25_SSP1_TXD,
72	GPIO26_SSP1_RXD,
73
74	/* AC97 */
75	GPIO28_AC97_BITCLK,
76	GPIO29_AC97_SDATA_IN_0,
77	GPIO30_AC97_SDATA_OUT,
78	GPIO31_AC97_SYNC,
79
80	/* LCD - 16bpp DSTN */
81	GPIOxx_LCD_DSTN_16BPP,
82
83	/* BTUART */
84	GPIO42_BTUART_RXD,
85	GPIO43_BTUART_TXD,
86	GPIO44_BTUART_CTS,
87	GPIO45_BTUART_RTS,
88
89	/* PC Card */
90	GPIO48_nPOE,
91	GPIO49_nPWE,
92	GPIO50_nPIOR,
93	GPIO51_nPIOW,
94	GPIO52_nPCE_1,
95	GPIO53_nPCE_2,
96	GPIO54_nPSKTSEL,
97	GPIO55_nPREG,
98	GPIO56_nPWAIT,
99	GPIO57_nIOIS16,
100
101	/* MMC */
102	GPIO6_MMC_CLK,
103	GPIO8_MMC_CS0,
104
105	/* wakeup */
106	GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
107};
108
109#define LUB_HEXLED		__LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
110#define LUB_MISC_WR		__LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
111
112void lubbock_set_hexled(uint32_t value)
113{
114	LUB_HEXLED = value;
115}
116
117void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
118{
119	unsigned long flags;
120
121	local_irq_save(flags);
122	LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
123	local_irq_restore(flags);
124}
125EXPORT_SYMBOL(lubbock_set_misc_wr);
126
127static int lubbock_udc_is_connected(void)
128{
129	return (LUB_MISC_RD & (1 << 9)) == 0;
130}
131
132static struct pxa2xx_udc_mach_info udc_info __initdata = {
133	.udc_is_connected	= lubbock_udc_is_connected,
134	// no D+ pullup; lubbock can't connect/disconnect in software
135};
136
137static struct resource sa1111_resources[] = {
138	[0] = {
139		.start	= 0x10000000,
140		.end	= 0x10001fff,
141		.flags	= IORESOURCE_MEM,
142	},
143	[1] = {
144		.start	= LUBBOCK_SA1111_IRQ,
145		.end	= LUBBOCK_SA1111_IRQ,
146		.flags	= IORESOURCE_IRQ,
147	},
148};
149
150static struct sa1111_platform_data sa1111_info = {
151	.irq_base	= LUBBOCK_SA1111_IRQ_BASE,
152	.disable_devs	= SA1111_DEVID_SAC,
153};
154
155static struct platform_device sa1111_device = {
156	.name		= "sa1111",
157	.id		= -1,
158	.num_resources	= ARRAY_SIZE(sa1111_resources),
159	.resource	= sa1111_resources,
160	.dev		= {
161		.platform_data	= &sa1111_info,
162	},
163};
164
165/* ADS7846 is connected through SSP ... and if your board has J5 populated,
166 * you can select it to replace the ucb1400 by switching the touchscreen cable
167 * (to J5) and poking board registers (as done below).  Else it's only useful
168 * for the temperature sensors.
169 */
170static struct pxa2xx_spi_master pxa_ssp_master_info = {
171	.num_chipselect	= 1,
172};
173
174static int lubbock_ads7846_pendown_state(void)
175{
176	/* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
177	return 0;
178}
179
180static struct ads7846_platform_data ads_info = {
181	.model			= 7846,
182	.vref_delay_usecs	= 100,		/* internal, no cap */
183	.get_pendown_state	= lubbock_ads7846_pendown_state,
184	// .x_plate_ohms		= 500,	/* GUESS! */
185	// .y_plate_ohms		= 500,	/* GUESS! */
186};
187
188static void ads7846_cs(u32 command)
189{
190	static const unsigned	TS_nCS = 1 << 11;
191	lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
192}
193
194static struct pxa2xx_spi_chip ads_hw = {
195	.tx_threshold		= 1,
196	.rx_threshold		= 2,
197	.cs_control		= ads7846_cs,
198};
199
200static struct spi_board_info spi_board_info[] __initdata = { {
201	.modalias	= "ads7846",
202	.platform_data	= &ads_info,
203	.controller_data = &ads_hw,
204	.irq		= LUBBOCK_BB_IRQ,
205	.max_speed_hz	= 120000 /* max sample rate at 3V */
206				* 26 /* command + data + overhead */,
207	.bus_num	= 1,
208	.chip_select	= 0,
209},
210};
211
212static struct resource smc91x_resources[] = {
213	[0] = {
214		.name	= "smc91x-regs",
215		.start	= 0x0c000c00,
216		.end	= 0x0c0fffff,
217		.flags	= IORESOURCE_MEM,
218	},
219	[1] = {
220		.start	= LUBBOCK_ETH_IRQ,
221		.end	= LUBBOCK_ETH_IRQ,
222		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
223	},
224	[2] = {
225		.name	= "smc91x-attrib",
226		.start	= 0x0e000000,
227		.end	= 0x0e0fffff,
228		.flags	= IORESOURCE_MEM,
229	},
230};
231
232static struct smc91x_platdata lubbock_smc91x_info = {
233	.flags	= SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
234};
235
236static struct platform_device smc91x_device = {
237	.name		= "smc91x",
238	.id		= -1,
239	.num_resources	= ARRAY_SIZE(smc91x_resources),
240	.resource	= smc91x_resources,
241	.dev		= {
242		.platform_data = &lubbock_smc91x_info,
243	},
244};
245
246static struct resource flash_resources[] = {
247	[0] = {
248		.start	= 0x00000000,
249		.end	= SZ_64M - 1,
250		.flags	= IORESOURCE_MEM,
251	},
252	[1] = {
253		.start	= 0x04000000,
254		.end	= 0x04000000 + SZ_64M - 1,
255		.flags	= IORESOURCE_MEM,
256	},
257};
258
259static struct mtd_partition lubbock_partitions[] = {
260	{
261		.name =		"Bootloader",
262		.size =		0x00040000,
263		.offset =	0,
264		.mask_flags =	MTD_WRITEABLE  /* force read-only */
265	},{
266		.name =		"Kernel",
267		.size =		0x00100000,
268		.offset =	0x00040000,
269	},{
270		.name =		"Filesystem",
271		.size =		MTDPART_SIZ_FULL,
272		.offset =	0x00140000
273	}
274};
275
276static struct flash_platform_data lubbock_flash_data[2] = {
277	{
278		.map_name	= "cfi_probe",
279		.parts		= lubbock_partitions,
280		.nr_parts	= ARRAY_SIZE(lubbock_partitions),
281	}, {
282		.map_name	= "cfi_probe",
283		.parts		= NULL,
284		.nr_parts	= 0,
285	}
286};
287
288static struct platform_device lubbock_flash_device[2] = {
289	{
290		.name		= "pxa2xx-flash",
291		.id		= 0,
292		.dev = {
293			.platform_data = &lubbock_flash_data[0],
294		},
295		.resource = &flash_resources[0],
296		.num_resources = 1,
297	},
298	{
299		.name		= "pxa2xx-flash",
300		.id		= 1,
301		.dev = {
302			.platform_data = &lubbock_flash_data[1],
303		},
304		.resource = &flash_resources[1],
305		.num_resources = 1,
306	},
307};
308
309static struct resource lubbock_cplds_resources[] = {
310	[0] = {
311		.start	= LUBBOCK_FPGA_PHYS + 0xc0,
312		.end	= LUBBOCK_FPGA_PHYS + 0xe0 - 1,
313		.flags	= IORESOURCE_MEM,
314	},
315	[1] = {
316		.start	= PXA_GPIO_TO_IRQ(0),
317		.end	= PXA_GPIO_TO_IRQ(0),
318		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
319	},
320	[2] = {
321		.start	= LUBBOCK_IRQ(0),
322		.end	= LUBBOCK_IRQ(6),
323		.flags	= IORESOURCE_IRQ,
324	},
325};
326
327static struct platform_device lubbock_cplds_device = {
328	.name		= "pxa_cplds_irqs",
329	.id		= -1,
330	.resource	= &lubbock_cplds_resources[0],
331	.num_resources	= 3,
332};
333
334
335static struct platform_device *devices[] __initdata = {
336	&sa1111_device,
337	&smc91x_device,
338	&lubbock_flash_device[0],
339	&lubbock_flash_device[1],
340	&lubbock_cplds_device,
341};
342
343static struct pxafb_mode_info sharp_lm8v31_mode = {
344	.pixclock	= 270000,
345	.xres		= 640,
346	.yres		= 480,
347	.bpp		= 16,
348	.hsync_len	= 1,
349	.left_margin	= 3,
350	.right_margin	= 3,
351	.vsync_len	= 1,
352	.upper_margin	= 0,
353	.lower_margin	= 0,
354	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
355	.cmap_greyscale	= 0,
356};
357
358static struct pxafb_mach_info sharp_lm8v31 = {
359	.modes		= &sharp_lm8v31_mode,
360	.num_modes	= 1,
361	.cmap_inverse	= 0,
362	.cmap_static	= 0,
363	.lcd_conn	= LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
364			  LCD_AC_BIAS_FREQ(255),
365};
366
367#define	MMC_POLL_RATE		msecs_to_jiffies(1000)
368
369static void lubbock_mmc_poll(unsigned long);
370static irq_handler_t mmc_detect_int;
371
372static struct timer_list mmc_timer = {
373	.function	= lubbock_mmc_poll,
374};
375
376static void lubbock_mmc_poll(unsigned long data)
377{
378	unsigned long flags;
379
380	/* clear any previous irq state, then ... */
381	local_irq_save(flags);
382	LUB_IRQ_SET_CLR &= ~(1 << 0);
383	local_irq_restore(flags);
384
385	/* poll until mmc/sd card is removed */
386	if (LUB_IRQ_SET_CLR & (1 << 0))
387		mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
388	else {
389		(void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
390		enable_irq(LUBBOCK_SD_IRQ);
391	}
392}
393
394static irqreturn_t lubbock_detect_int(int irq, void *data)
395{
396	/* IRQ is level triggered; disable, and poll for removal */
397	disable_irq(irq);
398	mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
399
400	return mmc_detect_int(irq, data);
401}
402
403static int lubbock_mci_init(struct device *dev,
404		irq_handler_t detect_int,
405		void *data)
406{
407	/* detect card insert/eject */
408	mmc_detect_int = detect_int;
409	init_timer(&mmc_timer);
410	mmc_timer.data = (unsigned long) data;
411	return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
412			   0, "lubbock-sd-detect", data);
413}
414
415static int lubbock_mci_get_ro(struct device *dev)
416{
417	return (LUB_MISC_RD & (1 << 2)) != 0;
418}
419
420static void lubbock_mci_exit(struct device *dev, void *data)
421{
422	free_irq(LUBBOCK_SD_IRQ, data);
423	del_timer_sync(&mmc_timer);
424}
425
426static struct pxamci_platform_data lubbock_mci_platform_data = {
427	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
428	.detect_delay_ms	= 10,
429	.init 			= lubbock_mci_init,
430	.get_ro			= lubbock_mci_get_ro,
431	.exit 			= lubbock_mci_exit,
432	.gpio_card_detect	= -1,
433	.gpio_card_ro		= -1,
434	.gpio_power		= -1,
435};
436
437static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
438{
439	unsigned long flags;
440
441	local_irq_save(flags);
442	if (mode & IR_SIRMODE) {
443		LUB_MISC_WR &= ~(1 << 4);
444	} else if (mode & IR_FIRMODE) {
445		LUB_MISC_WR |= 1 << 4;
446	}
447	pxa2xx_transceiver_mode(dev, mode);
448	local_irq_restore(flags);
449}
450
451static struct pxaficp_platform_data lubbock_ficp_platform_data = {
452	.gpio_pwdown		= -1,
453	.transceiver_cap	= IR_SIRMODE | IR_FIRMODE,
454	.transceiver_mode	= lubbock_irda_transceiver_mode,
455};
456
457static void __init lubbock_init(void)
458{
459	int flashboot = (LUB_CONF_SWITCHES & 1);
460
461	pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
462
463	pxa_set_ffuart_info(NULL);
464	pxa_set_btuart_info(NULL);
465	pxa_set_stuart_info(NULL);
466
467	clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
468	pxa_set_udc_info(&udc_info);
469	pxa_set_fb_info(NULL, &sharp_lm8v31);
470	pxa_set_mci_info(&lubbock_mci_platform_data);
471	pxa_set_ficp_info(&lubbock_ficp_platform_data);
472	pxa_set_ac97_info(NULL);
473
474	lubbock_flash_data[0].width = lubbock_flash_data[1].width =
475		(__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
476	/* Compensate for the nROMBT switch which swaps the flash banks */
477	printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
478	       flashboot?"Flash":"ROM", flashboot);
479
480	lubbock_flash_data[flashboot^1].name = "application-flash";
481	lubbock_flash_data[flashboot].name = "boot-rom";
482	(void) platform_add_devices(devices, ARRAY_SIZE(devices));
483
484	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
485	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
486}
487
488static struct map_desc lubbock_io_desc[] __initdata = {
489  	{	/* CPLD */
490		.virtual	=  LUBBOCK_FPGA_VIRT,
491		.pfn		= __phys_to_pfn(LUBBOCK_FPGA_PHYS),
492		.length		= 0x00100000,
493		.type		= MT_DEVICE
494	}
495};
496
497static void __init lubbock_map_io(void)
498{
499	pxa25x_map_io();
500	iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
501
502	PCFR |= PCFR_OPDE;
503}
504
505/*
506 * Driver for the 8 discrete LEDs available for general use:
507 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
508 * so be sure to not monkey with them here.
509 */
510
511#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
512struct lubbock_led {
513	struct led_classdev	cdev;
514	u8			mask;
515};
516
517/*
518 * The triggers lines up below will only be used if the
519 * LED triggers are compiled in.
520 */
521static const struct {
522	const char *name;
523	const char *trigger;
524} lubbock_leds[] = {
525	{ "lubbock:D28", "default-on", },
526	{ "lubbock:D27", "cpu0", },
527	{ "lubbock:D26", "heartbeat" },
528	{ "lubbock:D25", },
529	{ "lubbock:D24", },
530	{ "lubbock:D23", },
531	{ "lubbock:D22", },
532	{ "lubbock:D21", },
533};
534
535static void lubbock_led_set(struct led_classdev *cdev,
536			      enum led_brightness b)
537{
538	struct lubbock_led *led = container_of(cdev,
539					 struct lubbock_led, cdev);
540	u32 reg = LUB_DISC_BLNK_LED;
541
542	if (b != LED_OFF)
543		reg |= led->mask;
544	else
545		reg &= ~led->mask;
546
547	LUB_DISC_BLNK_LED = reg;
548}
549
550static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
551{
552	struct lubbock_led *led = container_of(cdev,
553					 struct lubbock_led, cdev);
554	u32 reg = LUB_DISC_BLNK_LED;
555
556	return (reg & led->mask) ? LED_FULL : LED_OFF;
557}
558
559static int __init lubbock_leds_init(void)
560{
561	int i;
562
563	if (!machine_is_lubbock())
564		return -ENODEV;
565
566	/* All ON */
567	LUB_DISC_BLNK_LED |= 0xff;
568	for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
569		struct lubbock_led *led;
570
571		led = kzalloc(sizeof(*led), GFP_KERNEL);
572		if (!led)
573			break;
574
575		led->cdev.name = lubbock_leds[i].name;
576		led->cdev.brightness_set = lubbock_led_set;
577		led->cdev.brightness_get = lubbock_led_get;
578		led->cdev.default_trigger = lubbock_leds[i].trigger;
579		led->mask = BIT(i);
580
581		if (led_classdev_register(NULL, &led->cdev) < 0) {
582			kfree(led);
583			break;
584		}
585	}
586
587	return 0;
588}
589
590/*
591 * Since we may have triggers on any subsystem, defer registration
592 * until after subsystem_init.
593 */
594fs_initcall(lubbock_leds_init);
595#endif
596
597MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
598	/* Maintainer: MontaVista Software Inc. */
599	.map_io		= lubbock_map_io,
600	.nr_irqs	= LUBBOCK_NR_IRQS,
601	.init_irq	= pxa25x_init_irq,
602	.handle_irq	= pxa25x_handle_irq,
603	.init_time	= pxa_timer_init,
604	.init_machine	= lubbock_init,
605	.restart	= pxa_restart,
606MACHINE_END
607