1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *  linux/arch/arm/mach-pxa/lubbock.c
4 *
5 *  Support for the Intel DBPXA250 Development Platform.
6 *
7 *  Author:	Nicolas Pitre
8 *  Created:	Jun 15, 2001
9 *  Copyright:	MontaVista Software Inc.
10 */
11#include <linux/clkdev.h>
12#include <linux/gpio.h>
13#include <linux/gpio/gpio-reg.h>
14#include <linux/gpio/machine.h>
15#include <linux/module.h>
16#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/io.h>
19#include <linux/platform_device.h>
20#include <linux/syscore_ops.h>
21#include <linux/major.h>
22#include <linux/fb.h>
23#include <linux/interrupt.h>
24#include <linux/mtd/mtd.h>
25#include <linux/mtd/partitions.h>
26#include <linux/smc91x.h>
27#include <linux/slab.h>
28#include <linux/leds.h>
29
30#include <linux/spi/spi.h>
31#include <linux/spi/ads7846.h>
32#include <linux/spi/pxa2xx_spi.h>
33
34#include <asm/setup.h>
35#include <asm/memory.h>
36#include <asm/mach-types.h>
37#include <mach/hardware.h>
38#include <asm/irq.h>
39#include <linux/sizes.h>
40
41#include <asm/mach/arch.h>
42#include <asm/mach/map.h>
43#include <asm/mach/irq.h>
44#include <asm/mach/flash.h>
45
46#include <asm/hardware/sa1111.h>
47
48#include "pxa25x.h"
49#include <mach/audio.h>
50#include <mach/lubbock.h>
51#include "udc.h"
52#include <linux/platform_data/irda-pxaficp.h>
53#include <linux/platform_data/video-pxafb.h>
54#include <linux/platform_data/mmc-pxamci.h>
55#include "pm.h"
56#include <mach/smemc.h>
57
58#include "generic.h"
59#include "devices.h"
60
61static unsigned long lubbock_pin_config[] __initdata = {
62	GPIO15_nCS_1,	/* CS1 - Flash */
63	GPIO78_nCS_2,	/* CS2 - Baseboard FGPA */
64	GPIO79_nCS_3,	/* CS3 - SMC ethernet */
65	GPIO80_nCS_4,	/* CS4 - SA1111 */
66
67	/* SSP data pins */
68	GPIO23_SSP1_SCLK,
69	GPIO25_SSP1_TXD,
70	GPIO26_SSP1_RXD,
71
72	/* AC97 */
73	GPIO28_AC97_BITCLK,
74	GPIO29_AC97_SDATA_IN_0,
75	GPIO30_AC97_SDATA_OUT,
76	GPIO31_AC97_SYNC,
77
78	/* LCD - 16bpp DSTN */
79	GPIOxx_LCD_DSTN_16BPP,
80
81	/* BTUART */
82	GPIO42_BTUART_RXD,
83	GPIO43_BTUART_TXD,
84	GPIO44_BTUART_CTS,
85	GPIO45_BTUART_RTS,
86
87	/* PC Card */
88	GPIO48_nPOE,
89	GPIO49_nPWE,
90	GPIO50_nPIOR,
91	GPIO51_nPIOW,
92	GPIO52_nPCE_1,
93	GPIO53_nPCE_2,
94	GPIO54_nPSKTSEL,
95	GPIO55_nPREG,
96	GPIO56_nPWAIT,
97	GPIO57_nIOIS16,
98
99	/* MMC */
100	GPIO6_MMC_CLK,
101	GPIO8_MMC_CS0,
102
103	/* SA1111 chip */
104	GPIO11_3_6MHz,
105
106	/* wakeup */
107	GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
108};
109
110#define LUB_HEXLED		__LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
111
112void lubbock_set_hexled(uint32_t value)
113{
114	LUB_HEXLED = value;
115}
116
117static struct gpio_chip *lubbock_misc_wr_gc;
118
119static void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
120{
121	unsigned long m = mask, v = set;
122	lubbock_misc_wr_gc->set_multiple(lubbock_misc_wr_gc, &m, &v);
123}
124
125static int lubbock_udc_is_connected(void)
126{
127	return (LUB_MISC_RD & (1 << 9)) == 0;
128}
129
130static struct pxa2xx_udc_mach_info udc_info __initdata = {
131	.udc_is_connected	= lubbock_udc_is_connected,
132	// no D+ pullup; lubbock can't connect/disconnect in software
133};
134
135/* GPIOs for SA1111 PCMCIA */
136static struct gpiod_lookup_table sa1111_pcmcia_gpio_table = {
137	.dev_id = "1800",
138	.table = {
139		{ "sa1111", 0, "a0vpp", GPIO_ACTIVE_HIGH },
140		{ "sa1111", 1, "a1vpp", GPIO_ACTIVE_HIGH },
141		{ "sa1111", 2, "a0vcc", GPIO_ACTIVE_HIGH },
142		{ "sa1111", 3, "a1vcc", GPIO_ACTIVE_HIGH },
143		{ "lubbock", 14, "b0vcc", GPIO_ACTIVE_HIGH },
144		{ "lubbock", 15, "b1vcc", GPIO_ACTIVE_HIGH },
145		{ },
146	},
147};
148
149static void lubbock_init_pcmcia(void)
150{
151	struct clk *clk;
152
153	gpiod_add_lookup_table(&sa1111_pcmcia_gpio_table);
154
155	/* Add an alias for the SA1111 PCMCIA clock */
156	clk = clk_get_sys("pxa2xx-pcmcia", NULL);
157	if (!IS_ERR(clk)) {
158		clkdev_create(clk, NULL, "1800");
159		clk_put(clk);
160	}
161}
162
163static struct resource sa1111_resources[] = {
164	[0] = {
165		.start	= 0x10000000,
166		.end	= 0x10001fff,
167		.flags	= IORESOURCE_MEM,
168	},
169	[1] = {
170		.start	= LUBBOCK_SA1111_IRQ,
171		.end	= LUBBOCK_SA1111_IRQ,
172		.flags	= IORESOURCE_IRQ,
173	},
174};
175
176static struct sa1111_platform_data sa1111_info = {
177	.irq_base	= LUBBOCK_SA1111_IRQ_BASE,
178	.disable_devs	= SA1111_DEVID_SAC,
179};
180
181static struct platform_device sa1111_device = {
182	.name		= "sa1111",
183	.id		= -1,
184	.num_resources	= ARRAY_SIZE(sa1111_resources),
185	.resource	= sa1111_resources,
186	.dev		= {
187		.platform_data	= &sa1111_info,
188	},
189};
190
191/* ADS7846 is connected through SSP ... and if your board has J5 populated,
192 * you can select it to replace the ucb1400 by switching the touchscreen cable
193 * (to J5) and poking board registers (as done below).  Else it's only useful
194 * for the temperature sensors.
195 */
196static struct pxa2xx_spi_controller pxa_ssp_master_info = {
197	.num_chipselect	= 1,
198};
199
200static int lubbock_ads7846_pendown_state(void)
201{
202	/* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
203	return 0;
204}
205
206static struct ads7846_platform_data ads_info = {
207	.model			= 7846,
208	.vref_delay_usecs	= 100,		/* internal, no cap */
209	.get_pendown_state	= lubbock_ads7846_pendown_state,
210	// .x_plate_ohms		= 500,	/* GUESS! */
211	// .y_plate_ohms		= 500,	/* GUESS! */
212};
213
214static void ads7846_cs(u32 command)
215{
216	static const unsigned	TS_nCS = 1 << 11;
217	lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
218}
219
220static struct pxa2xx_spi_chip ads_hw = {
221	.tx_threshold		= 1,
222	.rx_threshold		= 2,
223	.cs_control		= ads7846_cs,
224};
225
226static struct spi_board_info spi_board_info[] __initdata = { {
227	.modalias	= "ads7846",
228	.platform_data	= &ads_info,
229	.controller_data = &ads_hw,
230	.irq		= LUBBOCK_BB_IRQ,
231	.max_speed_hz	= 120000 /* max sample rate at 3V */
232				* 26 /* command + data + overhead */,
233	.bus_num	= 1,
234	.chip_select	= 0,
235},
236};
237
238static struct resource smc91x_resources[] = {
239	[0] = {
240		.name	= "smc91x-regs",
241		.start	= 0x0c000c00,
242		.end	= 0x0c0fffff,
243		.flags	= IORESOURCE_MEM,
244	},
245	[1] = {
246		.start	= LUBBOCK_ETH_IRQ,
247		.end	= LUBBOCK_ETH_IRQ,
248		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
249	},
250	[2] = {
251		.name	= "smc91x-attrib",
252		.start	= 0x0e000000,
253		.end	= 0x0e0fffff,
254		.flags	= IORESOURCE_MEM,
255	},
256};
257
258static struct smc91x_platdata lubbock_smc91x_info = {
259	.flags	= SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
260};
261
262static struct platform_device smc91x_device = {
263	.name		= "smc91x",
264	.id		= -1,
265	.num_resources	= ARRAY_SIZE(smc91x_resources),
266	.resource	= smc91x_resources,
267	.dev		= {
268		.platform_data = &lubbock_smc91x_info,
269	},
270};
271
272static struct resource flash_resources[] = {
273	[0] = {
274		.start	= 0x00000000,
275		.end	= SZ_64M - 1,
276		.flags	= IORESOURCE_MEM,
277	},
278	[1] = {
279		.start	= 0x04000000,
280		.end	= 0x04000000 + SZ_64M - 1,
281		.flags	= IORESOURCE_MEM,
282	},
283};
284
285static struct mtd_partition lubbock_partitions[] = {
286	{
287		.name =		"Bootloader",
288		.size =		0x00040000,
289		.offset =	0,
290		.mask_flags =	MTD_WRITEABLE  /* force read-only */
291	},{
292		.name =		"Kernel",
293		.size =		0x00100000,
294		.offset =	0x00040000,
295	},{
296		.name =		"Filesystem",
297		.size =		MTDPART_SIZ_FULL,
298		.offset =	0x00140000
299	}
300};
301
302static struct flash_platform_data lubbock_flash_data[2] = {
303	{
304		.map_name	= "cfi_probe",
305		.parts		= lubbock_partitions,
306		.nr_parts	= ARRAY_SIZE(lubbock_partitions),
307	}, {
308		.map_name	= "cfi_probe",
309		.parts		= NULL,
310		.nr_parts	= 0,
311	}
312};
313
314static struct platform_device lubbock_flash_device[2] = {
315	{
316		.name		= "pxa2xx-flash",
317		.id		= 0,
318		.dev = {
319			.platform_data = &lubbock_flash_data[0],
320		},
321		.resource = &flash_resources[0],
322		.num_resources = 1,
323	},
324	{
325		.name		= "pxa2xx-flash",
326		.id		= 1,
327		.dev = {
328			.platform_data = &lubbock_flash_data[1],
329		},
330		.resource = &flash_resources[1],
331		.num_resources = 1,
332	},
333};
334
335static struct resource lubbock_cplds_resources[] = {
336	[0] = {
337		.start	= LUBBOCK_FPGA_PHYS + 0xc0,
338		.end	= LUBBOCK_FPGA_PHYS + 0xe0 - 1,
339		.flags	= IORESOURCE_MEM,
340	},
341	[1] = {
342		.start	= PXA_GPIO_TO_IRQ(0),
343		.end	= PXA_GPIO_TO_IRQ(0),
344		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
345	},
346	[2] = {
347		.start	= LUBBOCK_IRQ(0),
348		.end	= LUBBOCK_IRQ(6),
349		.flags	= IORESOURCE_IRQ,
350	},
351};
352
353static struct platform_device lubbock_cplds_device = {
354	.name		= "pxa_cplds_irqs",
355	.id		= -1,
356	.resource	= &lubbock_cplds_resources[0],
357	.num_resources	= 3,
358};
359
360
361static struct platform_device *devices[] __initdata = {
362	&sa1111_device,
363	&smc91x_device,
364	&lubbock_flash_device[0],
365	&lubbock_flash_device[1],
366	&lubbock_cplds_device,
367};
368
369static struct pxafb_mode_info sharp_lm8v31_mode = {
370	.pixclock	= 270000,
371	.xres		= 640,
372	.yres		= 480,
373	.bpp		= 16,
374	.hsync_len	= 1,
375	.left_margin	= 3,
376	.right_margin	= 3,
377	.vsync_len	= 1,
378	.upper_margin	= 0,
379	.lower_margin	= 0,
380	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
381	.cmap_greyscale	= 0,
382};
383
384static struct pxafb_mach_info sharp_lm8v31 = {
385	.modes		= &sharp_lm8v31_mode,
386	.num_modes	= 1,
387	.cmap_inverse	= 0,
388	.cmap_static	= 0,
389	.lcd_conn	= LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
390			  LCD_AC_BIAS_FREQ(255),
391};
392
393#define	MMC_POLL_RATE		msecs_to_jiffies(1000)
394
395static irq_handler_t mmc_detect_int;
396static void *mmc_detect_int_data;
397static struct timer_list mmc_timer;
398
399static void lubbock_mmc_poll(struct timer_list *unused)
400{
401	unsigned long flags;
402
403	/* clear any previous irq state, then ... */
404	local_irq_save(flags);
405	LUB_IRQ_SET_CLR &= ~(1 << 0);
406	local_irq_restore(flags);
407
408	/* poll until mmc/sd card is removed */
409	if (LUB_IRQ_SET_CLR & (1 << 0))
410		mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
411	else {
412		(void) mmc_detect_int(LUBBOCK_SD_IRQ, mmc_detect_int_data);
413		enable_irq(LUBBOCK_SD_IRQ);
414	}
415}
416
417static irqreturn_t lubbock_detect_int(int irq, void *data)
418{
419	/* IRQ is level triggered; disable, and poll for removal */
420	disable_irq(irq);
421	mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
422
423	return mmc_detect_int(irq, data);
424}
425
426static int lubbock_mci_init(struct device *dev,
427		irq_handler_t detect_int,
428		void *data)
429{
430	/* detect card insert/eject */
431	mmc_detect_int = detect_int;
432	mmc_detect_int_data = data;
433	timer_setup(&mmc_timer, lubbock_mmc_poll, 0);
434	return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
435			   0, "lubbock-sd-detect", data);
436}
437
438static int lubbock_mci_get_ro(struct device *dev)
439{
440	return (LUB_MISC_RD & (1 << 2)) != 0;
441}
442
443static void lubbock_mci_exit(struct device *dev, void *data)
444{
445	free_irq(LUBBOCK_SD_IRQ, data);
446	del_timer_sync(&mmc_timer);
447}
448
449static struct pxamci_platform_data lubbock_mci_platform_data = {
450	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
451	.detect_delay_ms	= 10,
452	.init 			= lubbock_mci_init,
453	.get_ro			= lubbock_mci_get_ro,
454	.exit 			= lubbock_mci_exit,
455};
456
457static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
458{
459	unsigned long flags;
460
461	local_irq_save(flags);
462	if (mode & IR_SIRMODE) {
463		lubbock_set_misc_wr(BIT(4), 0);
464	} else if (mode & IR_FIRMODE) {
465		lubbock_set_misc_wr(BIT(4), BIT(4));
466	}
467	pxa2xx_transceiver_mode(dev, mode);
468	local_irq_restore(flags);
469}
470
471static struct pxaficp_platform_data lubbock_ficp_platform_data = {
472	.gpio_pwdown		= -1,
473	.transceiver_cap	= IR_SIRMODE | IR_FIRMODE,
474	.transceiver_mode	= lubbock_irda_transceiver_mode,
475};
476
477static void __init lubbock_init(void)
478{
479	int flashboot = (LUB_CONF_SWITCHES & 1);
480
481	pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
482
483	lubbock_misc_wr_gc = gpio_reg_init(NULL, (void *)&LUB_MISC_WR,
484					   -1, 16, "lubbock", 0, LUB_MISC_WR,
485					   NULL, NULL, NULL);
486	if (IS_ERR(lubbock_misc_wr_gc)) {
487		pr_err("Lubbock: unable to register lubbock GPIOs: %ld\n",
488		       PTR_ERR(lubbock_misc_wr_gc));
489		lubbock_misc_wr_gc = NULL;
490	}
491
492	pxa_set_ffuart_info(NULL);
493	pxa_set_btuart_info(NULL);
494	pxa_set_stuart_info(NULL);
495
496	lubbock_init_pcmcia();
497
498	clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
499	pxa_set_udc_info(&udc_info);
500	pxa_set_fb_info(NULL, &sharp_lm8v31);
501	pxa_set_mci_info(&lubbock_mci_platform_data);
502	pxa_set_ficp_info(&lubbock_ficp_platform_data);
503	pxa_set_ac97_info(NULL);
504
505	lubbock_flash_data[0].width = lubbock_flash_data[1].width =
506		(__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
507	/* Compensate for the nROMBT switch which swaps the flash banks */
508	printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
509	       flashboot?"Flash":"ROM", flashboot);
510
511	lubbock_flash_data[flashboot^1].name = "application-flash";
512	lubbock_flash_data[flashboot].name = "boot-rom";
513	(void) platform_add_devices(devices, ARRAY_SIZE(devices));
514
515	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
516	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
517}
518
519static struct map_desc lubbock_io_desc[] __initdata = {
520  	{	/* CPLD */
521		.virtual	=  LUBBOCK_FPGA_VIRT,
522		.pfn		= __phys_to_pfn(LUBBOCK_FPGA_PHYS),
523		.length		= 0x00100000,
524		.type		= MT_DEVICE
525	}
526};
527
528static void __init lubbock_map_io(void)
529{
530	pxa25x_map_io();
531	iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
532
533	PCFR |= PCFR_OPDE;
534}
535
536/*
537 * Driver for the 8 discrete LEDs available for general use:
538 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
539 * so be sure to not monkey with them here.
540 */
541
542#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
543struct lubbock_led {
544	struct led_classdev	cdev;
545	u8			mask;
546};
547
548/*
549 * The triggers lines up below will only be used if the
550 * LED triggers are compiled in.
551 */
552static const struct {
553	const char *name;
554	const char *trigger;
555} lubbock_leds[] = {
556	{ "lubbock:D28", "default-on", },
557	{ "lubbock:D27", "cpu0", },
558	{ "lubbock:D26", "heartbeat" },
559	{ "lubbock:D25", },
560	{ "lubbock:D24", },
561	{ "lubbock:D23", },
562	{ "lubbock:D22", },
563	{ "lubbock:D21", },
564};
565
566static void lubbock_led_set(struct led_classdev *cdev,
567			      enum led_brightness b)
568{
569	struct lubbock_led *led = container_of(cdev,
570					 struct lubbock_led, cdev);
571	u32 reg = LUB_DISC_BLNK_LED;
572
573	if (b != LED_OFF)
574		reg |= led->mask;
575	else
576		reg &= ~led->mask;
577
578	LUB_DISC_BLNK_LED = reg;
579}
580
581static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
582{
583	struct lubbock_led *led = container_of(cdev,
584					 struct lubbock_led, cdev);
585	u32 reg = LUB_DISC_BLNK_LED;
586
587	return (reg & led->mask) ? LED_FULL : LED_OFF;
588}
589
590static int __init lubbock_leds_init(void)
591{
592	int i;
593
594	if (!machine_is_lubbock())
595		return -ENODEV;
596
597	/* All ON */
598	LUB_DISC_BLNK_LED |= 0xff;
599	for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
600		struct lubbock_led *led;
601
602		led = kzalloc(sizeof(*led), GFP_KERNEL);
603		if (!led)
604			break;
605
606		led->cdev.name = lubbock_leds[i].name;
607		led->cdev.brightness_set = lubbock_led_set;
608		led->cdev.brightness_get = lubbock_led_get;
609		led->cdev.default_trigger = lubbock_leds[i].trigger;
610		led->mask = BIT(i);
611
612		if (led_classdev_register(NULL, &led->cdev) < 0) {
613			kfree(led);
614			break;
615		}
616	}
617
618	return 0;
619}
620
621/*
622 * Since we may have triggers on any subsystem, defer registration
623 * until after subsystem_init.
624 */
625fs_initcall(lubbock_leds_init);
626#endif
627
628MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
629	/* Maintainer: MontaVista Software Inc. */
630	.map_io		= lubbock_map_io,
631	.nr_irqs	= LUBBOCK_NR_IRQS,
632	.init_irq	= pxa25x_init_irq,
633	.handle_irq	= pxa25x_handle_irq,
634	.init_time	= pxa_timer_init,
635	.init_machine	= lubbock_init,
636	.restart	= pxa_restart,
637MACHINE_END
638