1/*
2 * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18 */
19
20#include <linux/init.h>
21#include <linux/types.h>
22#include <linux/module.h>
23#include <linux/delay.h>
24#include <linux/dma-mapping.h>
25#include <linux/platform_device.h>
26#include <linux/mtd/physmap.h>
27#include <linux/serial.h>
28#include <linux/serial_8250.h>
29#include <linux/ioport.h>
30#include <linux/io.h>
31#include <linux/vlynq.h>
32#include <linux/leds.h>
33#include <linux/string.h>
34#include <linux/etherdevice.h>
35#include <linux/phy.h>
36#include <linux/phy_fixed.h>
37#include <linux/gpio.h>
38#include <linux/clk.h>
39
40#include <asm/addrspace.h>
41#include <asm/mach-ar7/ar7.h>
42#include <asm/mach-ar7/gpio.h>
43#include <asm/mach-ar7/prom.h>
44
45/*****************************************************************************
46 * VLYNQ Bus
47 ****************************************************************************/
48struct plat_vlynq_data {
49	struct plat_vlynq_ops ops;
50	int gpio_bit;
51	int reset_bit;
52};
53
54static int vlynq_on(struct vlynq_device *dev)
55{
56	int ret;
57	struct plat_vlynq_data *pdata = dev->dev.platform_data;
58
59	ret = gpio_request(pdata->gpio_bit, "vlynq");
60	if (ret)
61		goto out;
62
63	ar7_device_reset(pdata->reset_bit);
64
65	ret = ar7_gpio_disable(pdata->gpio_bit);
66	if (ret)
67		goto out_enabled;
68
69	ret = ar7_gpio_enable(pdata->gpio_bit);
70	if (ret)
71		goto out_enabled;
72
73	ret = gpio_direction_output(pdata->gpio_bit, 0);
74	if (ret)
75		goto out_gpio_enabled;
76
77	msleep(50);
78
79	gpio_set_value(pdata->gpio_bit, 1);
80
81	msleep(50);
82
83	return 0;
84
85out_gpio_enabled:
86	ar7_gpio_disable(pdata->gpio_bit);
87out_enabled:
88	ar7_device_disable(pdata->reset_bit);
89	gpio_free(pdata->gpio_bit);
90out:
91	return ret;
92}
93
94static void vlynq_off(struct vlynq_device *dev)
95{
96	struct plat_vlynq_data *pdata = dev->dev.platform_data;
97
98	ar7_gpio_disable(pdata->gpio_bit);
99	gpio_free(pdata->gpio_bit);
100	ar7_device_disable(pdata->reset_bit);
101}
102
103static struct resource vlynq_low_res[] = {
104	{
105		.name	= "regs",
106		.flags	= IORESOURCE_MEM,
107		.start	= AR7_REGS_VLYNQ0,
108		.end	= AR7_REGS_VLYNQ0 + 0xff,
109	},
110	{
111		.name	= "irq",
112		.flags	= IORESOURCE_IRQ,
113		.start	= 29,
114		.end	= 29,
115	},
116	{
117		.name	= "mem",
118		.flags	= IORESOURCE_MEM,
119		.start	= 0x04000000,
120		.end	= 0x04ffffff,
121	},
122	{
123		.name	= "devirq",
124		.flags	= IORESOURCE_IRQ,
125		.start	= 80,
126		.end	= 111,
127	},
128};
129
130static struct resource vlynq_high_res[] = {
131	{
132		.name	= "regs",
133		.flags	= IORESOURCE_MEM,
134		.start	= AR7_REGS_VLYNQ1,
135		.end	= AR7_REGS_VLYNQ1 + 0xff,
136	},
137	{
138		.name	= "irq",
139		.flags	= IORESOURCE_IRQ,
140		.start	= 33,
141		.end	= 33,
142	},
143	{
144		.name	= "mem",
145		.flags	= IORESOURCE_MEM,
146		.start	= 0x0c000000,
147		.end	= 0x0cffffff,
148	},
149	{
150		.name	= "devirq",
151		.flags	= IORESOURCE_IRQ,
152		.start	= 112,
153		.end	= 143,
154	},
155};
156
157static struct plat_vlynq_data vlynq_low_data = {
158	.ops = {
159		.on	= vlynq_on,
160		.off	= vlynq_off,
161	},
162	.reset_bit	= 20,
163	.gpio_bit	= 18,
164};
165
166static struct plat_vlynq_data vlynq_high_data = {
167	.ops = {
168		.on	= vlynq_on,
169		.off	= vlynq_off,
170	},
171	.reset_bit	= 16,
172	.gpio_bit	= 19,
173};
174
175static struct platform_device vlynq_low = {
176	.id		= 0,
177	.name		= "vlynq",
178	.dev = {
179		.platform_data	= &vlynq_low_data,
180	},
181	.resource	= vlynq_low_res,
182	.num_resources	= ARRAY_SIZE(vlynq_low_res),
183};
184
185static struct platform_device vlynq_high = {
186	.id		= 1,
187	.name		= "vlynq",
188	.dev = {
189		.platform_data	= &vlynq_high_data,
190	},
191	.resource	= vlynq_high_res,
192	.num_resources	= ARRAY_SIZE(vlynq_high_res),
193};
194
195/*****************************************************************************
196 * Flash
197 ****************************************************************************/
198static struct resource physmap_flash_resource = {
199	.name	= "mem",
200	.flags	= IORESOURCE_MEM,
201	.start	= 0x10000000,
202	.end	= 0x107fffff,
203};
204
205static const char *ar7_probe_types[] = { "ar7part", NULL };
206
207static struct physmap_flash_data physmap_flash_data = {
208	.width	= 2,
209	.part_probe_types = ar7_probe_types,
210};
211
212static struct platform_device physmap_flash = {
213	.name		= "physmap-flash",
214	.dev = {
215		.platform_data	= &physmap_flash_data,
216	},
217	.resource	= &physmap_flash_resource,
218	.num_resources	= 1,
219};
220
221/*****************************************************************************
222 * Ethernet
223 ****************************************************************************/
224static struct resource cpmac_low_res[] = {
225	{
226		.name	= "regs",
227		.flags	= IORESOURCE_MEM,
228		.start	= AR7_REGS_MAC0,
229		.end	= AR7_REGS_MAC0 + 0x7ff,
230	},
231	{
232		.name	= "irq",
233		.flags	= IORESOURCE_IRQ,
234		.start	= 27,
235		.end	= 27,
236	},
237};
238
239static struct resource cpmac_high_res[] = {
240	{
241		.name	= "regs",
242		.flags	= IORESOURCE_MEM,
243		.start	= AR7_REGS_MAC1,
244		.end	= AR7_REGS_MAC1 + 0x7ff,
245	},
246	{
247		.name	= "irq",
248		.flags	= IORESOURCE_IRQ,
249		.start	= 41,
250		.end	= 41,
251	},
252};
253
254static struct fixed_phy_status fixed_phy_status __initdata = {
255	.link		= 1,
256	.speed		= 100,
257	.duplex		= 1,
258};
259
260static struct plat_cpmac_data cpmac_low_data = {
261	.reset_bit	= 17,
262	.power_bit	= 20,
263	.phy_mask	= 0x80000000,
264};
265
266static struct plat_cpmac_data cpmac_high_data = {
267	.reset_bit	= 21,
268	.power_bit	= 22,
269	.phy_mask	= 0x7fffffff,
270};
271
272static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
273
274static struct platform_device cpmac_low = {
275	.id		= 0,
276	.name		= "cpmac",
277	.dev = {
278		.dma_mask		= &cpmac_dma_mask,
279		.coherent_dma_mask	= DMA_BIT_MASK(32),
280		.platform_data		= &cpmac_low_data,
281	},
282	.resource	= cpmac_low_res,
283	.num_resources	= ARRAY_SIZE(cpmac_low_res),
284};
285
286static struct platform_device cpmac_high = {
287	.id		= 1,
288	.name		= "cpmac",
289	.dev = {
290		.dma_mask		= &cpmac_dma_mask,
291		.coherent_dma_mask	= DMA_BIT_MASK(32),
292		.platform_data		= &cpmac_high_data,
293	},
294	.resource	= cpmac_high_res,
295	.num_resources	= ARRAY_SIZE(cpmac_high_res),
296};
297
298static void __init cpmac_get_mac(int instance, unsigned char *dev_addr)
299{
300	char name[5], *mac;
301
302	sprintf(name, "mac%c", 'a' + instance);
303	mac = prom_getenv(name);
304	if (!mac && instance) {
305		sprintf(name, "mac%c", 'a');
306		mac = prom_getenv(name);
307	}
308
309	if (mac) {
310		if (!mac_pton(mac, dev_addr)) {
311			pr_warn("cannot parse mac address, using random address\n");
312			eth_random_addr(dev_addr);
313		}
314	} else
315		eth_random_addr(dev_addr);
316}
317
318/*****************************************************************************
319 * USB
320 ****************************************************************************/
321static struct resource usb_res[] = {
322	{
323		.name	= "regs",
324		.flags	= IORESOURCE_MEM,
325		.start	= AR7_REGS_USB,
326		.end	= AR7_REGS_USB + 0xff,
327	},
328	{
329		.name	= "irq",
330		.flags	= IORESOURCE_IRQ,
331		.start	= 32,
332		.end	= 32,
333	},
334	{
335		.name	= "mem",
336		.flags	= IORESOURCE_MEM,
337		.start	= 0x03400000,
338		.end	= 0x03401fff,
339	},
340};
341
342static struct platform_device ar7_udc = {
343	.name		= "ar7_udc",
344	.resource	= usb_res,
345	.num_resources	= ARRAY_SIZE(usb_res),
346};
347
348/*****************************************************************************
349 * LEDs
350 ****************************************************************************/
351static struct gpio_led default_leds[] = {
352	{
353		.name			= "status",
354		.gpio			= 8,
355		.active_low		= 1,
356	},
357};
358
359static struct gpio_led titan_leds[] = {
360	{ .name = "status", .gpio = 8, .active_low = 1, },
361	{ .name = "wifi", .gpio = 13, .active_low = 1, },
362};
363
364static struct gpio_led dsl502t_leds[] = {
365	{
366		.name			= "status",
367		.gpio			= 9,
368		.active_low		= 1,
369	},
370	{
371		.name			= "ethernet",
372		.gpio			= 7,
373		.active_low		= 1,
374	},
375	{
376		.name			= "usb",
377		.gpio			= 12,
378		.active_low		= 1,
379	},
380};
381
382static struct gpio_led dg834g_leds[] = {
383	{
384		.name			= "ppp",
385		.gpio			= 6,
386		.active_low		= 1,
387	},
388	{
389		.name			= "status",
390		.gpio			= 7,
391		.active_low		= 1,
392	},
393	{
394		.name			= "adsl",
395		.gpio			= 8,
396		.active_low		= 1,
397	},
398	{
399		.name			= "wifi",
400		.gpio			= 12,
401		.active_low		= 1,
402	},
403	{
404		.name			= "power",
405		.gpio			= 14,
406		.active_low		= 1,
407		.default_trigger	= "default-on",
408	},
409};
410
411static struct gpio_led fb_sl_leds[] = {
412	{
413		.name			= "1",
414		.gpio			= 7,
415	},
416	{
417		.name			= "2",
418		.gpio			= 13,
419		.active_low		= 1,
420	},
421	{
422		.name			= "3",
423		.gpio			= 10,
424		.active_low		= 1,
425	},
426	{
427		.name			= "4",
428		.gpio			= 12,
429		.active_low		= 1,
430	},
431	{
432		.name			= "5",
433		.gpio			= 9,
434		.active_low		= 1,
435	},
436};
437
438static struct gpio_led fb_fon_leds[] = {
439	{
440		.name			= "1",
441		.gpio			= 8,
442	},
443	{
444		.name			= "2",
445		.gpio			= 3,
446		.active_low		= 1,
447	},
448	{
449		.name			= "3",
450		.gpio			= 5,
451	},
452	{
453		.name			= "4",
454		.gpio			= 4,
455		.active_low		= 1,
456	},
457	{
458		.name			= "5",
459		.gpio			= 11,
460		.active_low		= 1,
461	},
462};
463
464static struct gpio_led gt701_leds[] = {
465	{
466		.name			= "inet:green",
467		.gpio			= 13,
468		.active_low		= 1,
469	},
470	{
471		.name			= "usb",
472		.gpio			= 12,
473		.active_low		= 1,
474	},
475	{
476		.name			= "inet:red",
477		.gpio			= 9,
478		.active_low		= 1,
479	},
480	{
481		.name			= "power:red",
482		.gpio			= 7,
483		.active_low		= 1,
484	},
485	{
486		.name			= "power:green",
487		.gpio			= 8,
488		.active_low		= 1,
489		.default_trigger	= "default-on",
490	},
491	{
492		.name			= "ethernet",
493		.gpio			= 10,
494		.active_low		= 1,
495	},
496};
497
498static struct gpio_led_platform_data ar7_led_data;
499
500static struct platform_device ar7_gpio_leds = {
501	.name = "leds-gpio",
502	.dev = {
503		.platform_data = &ar7_led_data,
504	}
505};
506
507static void __init detect_leds(void)
508{
509	char *prid, *usb_prod;
510
511	/* Default LEDs */
512	ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
513	ar7_led_data.leds = default_leds;
514
515	/* FIXME: the whole thing is unreliable */
516	prid = prom_getenv("ProductID");
517	usb_prod = prom_getenv("usb_prod");
518
519	/* If we can't get the product id from PROM, use the default LEDs */
520	if (!prid)
521		return;
522
523	if (strstr(prid, "Fritz_Box_FON")) {
524		ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
525		ar7_led_data.leds = fb_fon_leds;
526	} else if (strstr(prid, "Fritz_Box_")) {
527		ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
528		ar7_led_data.leds = fb_sl_leds;
529	} else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
530		&& usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
531		ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
532		ar7_led_data.leds = dsl502t_leds;
533	} else if (strstr(prid, "DG834")) {
534		ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
535		ar7_led_data.leds = dg834g_leds;
536	} else if (strstr(prid, "CYWM") || strstr(prid, "CYWL")) {
537		ar7_led_data.num_leds = ARRAY_SIZE(titan_leds);
538		ar7_led_data.leds = titan_leds;
539	} else if (strstr(prid, "GT701")) {
540		ar7_led_data.num_leds = ARRAY_SIZE(gt701_leds);
541		ar7_led_data.leds = gt701_leds;
542	}
543}
544
545/*****************************************************************************
546 * Watchdog
547 ****************************************************************************/
548static struct resource ar7_wdt_res = {
549	.name		= "regs",
550	.flags		= IORESOURCE_MEM,
551	.start		= -1,	/* Filled at runtime */
552	.end		= -1,	/* Filled at runtime */
553};
554
555static struct platform_device ar7_wdt = {
556	.name		= "ar7_wdt",
557	.resource	= &ar7_wdt_res,
558	.num_resources	= 1,
559};
560
561/*****************************************************************************
562 * Init
563 ****************************************************************************/
564static int __init ar7_register_uarts(void)
565{
566#ifdef CONFIG_SERIAL_8250
567	static struct uart_port uart_port __initdata;
568	struct clk *bus_clk;
569	int res;
570
571	memset(&uart_port, 0, sizeof(struct uart_port));
572
573	bus_clk = clk_get(NULL, "bus");
574	if (IS_ERR(bus_clk))
575		panic("unable to get bus clk");
576
577	uart_port.type		= PORT_AR7;
578	uart_port.uartclk	= clk_get_rate(bus_clk) / 2;
579	uart_port.iotype	= UPIO_MEM32;
580	uart_port.regshift	= 2;
581
582	uart_port.line		= 0;
583	uart_port.irq		= AR7_IRQ_UART0;
584	uart_port.mapbase	= AR7_REGS_UART0;
585	uart_port.membase	= ioremap(uart_port.mapbase, 256);
586
587	res = early_serial_setup(&uart_port);
588	if (res)
589		return res;
590
591	/* Only TNETD73xx have a second serial port */
592	if (ar7_has_second_uart()) {
593		uart_port.line		= 1;
594		uart_port.irq		= AR7_IRQ_UART1;
595		uart_port.mapbase	= UR8_REGS_UART1;
596		uart_port.membase	= ioremap(uart_port.mapbase, 256);
597
598		res = early_serial_setup(&uart_port);
599		if (res)
600			return res;
601	}
602#endif
603
604	return 0;
605}
606
607static void __init titan_fixup_devices(void)
608{
609	/* Set vlynq0 data */
610	vlynq_low_data.reset_bit = 15;
611	vlynq_low_data.gpio_bit = 14;
612
613	/* Set vlynq1 data */
614	vlynq_high_data.reset_bit = 16;
615	vlynq_high_data.gpio_bit = 7;
616
617	/* Set vlynq0 resources */
618	vlynq_low_res[0].start = TITAN_REGS_VLYNQ0;
619	vlynq_low_res[0].end = TITAN_REGS_VLYNQ0 + 0xff;
620	vlynq_low_res[1].start = 33;
621	vlynq_low_res[1].end = 33;
622	vlynq_low_res[2].start = 0x0c000000;
623	vlynq_low_res[2].end = 0x0fffffff;
624	vlynq_low_res[3].start = 80;
625	vlynq_low_res[3].end = 111;
626
627	/* Set vlynq1 resources */
628	vlynq_high_res[0].start = TITAN_REGS_VLYNQ1;
629	vlynq_high_res[0].end = TITAN_REGS_VLYNQ1 + 0xff;
630	vlynq_high_res[1].start = 34;
631	vlynq_high_res[1].end = 34;
632	vlynq_high_res[2].start = 0x40000000;
633	vlynq_high_res[2].end = 0x43ffffff;
634	vlynq_high_res[3].start = 112;
635	vlynq_high_res[3].end = 143;
636
637	/* Set cpmac0 data */
638	cpmac_low_data.phy_mask = 0x40000000;
639
640	/* Set cpmac1 data */
641	cpmac_high_data.phy_mask = 0x80000000;
642
643	/* Set cpmac0 resources */
644	cpmac_low_res[0].start = TITAN_REGS_MAC0;
645	cpmac_low_res[0].end = TITAN_REGS_MAC0 + 0x7ff;
646
647	/* Set cpmac1 resources */
648	cpmac_high_res[0].start = TITAN_REGS_MAC1;
649	cpmac_high_res[0].end = TITAN_REGS_MAC1 + 0x7ff;
650}
651
652static int __init ar7_register_devices(void)
653{
654	void __iomem *bootcr;
655	u32 val;
656	int res;
657
658	res = ar7_register_uarts();
659	if (res)
660		pr_err("unable to setup uart(s): %d\n", res);
661
662	res = platform_device_register(&physmap_flash);
663	if (res)
664		pr_warn("unable to register physmap-flash: %d\n", res);
665
666	if (ar7_is_titan())
667		titan_fixup_devices();
668
669	ar7_device_disable(vlynq_low_data.reset_bit);
670	res = platform_device_register(&vlynq_low);
671	if (res)
672		pr_warn("unable to register vlynq-low: %d\n", res);
673
674	if (ar7_has_high_vlynq()) {
675		ar7_device_disable(vlynq_high_data.reset_bit);
676		res = platform_device_register(&vlynq_high);
677		if (res)
678			pr_warn("unable to register vlynq-high: %d\n", res);
679	}
680
681	if (ar7_has_high_cpmac()) {
682		res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
683		if (!res) {
684			cpmac_get_mac(1, cpmac_high_data.dev_addr);
685
686			res = platform_device_register(&cpmac_high);
687			if (res)
688				pr_warn("unable to register cpmac-high: %d\n",
689					res);
690		} else
691			pr_warn("unable to add cpmac-high phy: %d\n", res);
692	} else
693		cpmac_low_data.phy_mask = 0xffffffff;
694
695	res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
696	if (!res) {
697		cpmac_get_mac(0, cpmac_low_data.dev_addr);
698		res = platform_device_register(&cpmac_low);
699		if (res)
700			pr_warn("unable to register cpmac-low: %d\n", res);
701	} else
702		pr_warn("unable to add cpmac-low phy: %d\n", res);
703
704	detect_leds();
705	res = platform_device_register(&ar7_gpio_leds);
706	if (res)
707		pr_warn("unable to register leds: %d\n", res);
708
709	res = platform_device_register(&ar7_udc);
710	if (res)
711		pr_warn("unable to register usb slave: %d\n", res);
712
713	/* Register watchdog only if enabled in hardware */
714	bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
715	val = readl(bootcr);
716	iounmap(bootcr);
717	if (val & AR7_WDT_HW_ENA) {
718		if (ar7_has_high_vlynq())
719			ar7_wdt_res.start = UR8_REGS_WDT;
720		else
721			ar7_wdt_res.start = AR7_REGS_WDT;
722
723		ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
724		res = platform_device_register(&ar7_wdt);
725		if (res)
726			pr_warn("unable to register watchdog: %d\n", res);
727	}
728
729	return 0;
730}
731device_initcall(ar7_register_devices);
732