1/*
2 * Platform device setup for Marvell mv64360/mv64460 host bridges (Discovery)
3 *
4 * Author: Dale Farnsworth <dale@farnsworth.org>
5 *
6 * 2007 (c) MontaVista, Software, Inc.  This file is licensed under
7 * the terms of the GNU General Public License version 2.  This program
8 * is licensed "as is" without any warranty of any kind, whether express
9 * or implied.
10 */
11
12#include <linux/stddef.h>
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/console.h>
16#include <linux/mv643xx.h>
17#include <linux/platform_device.h>
18#include <linux/of_platform.h>
19#include <linux/of_net.h>
20#include <linux/dma-mapping.h>
21
22#include <asm/prom.h>
23
24/* These functions provide the necessary setup for the mv64x60 drivers. */
25
26static const struct of_device_id of_mv64x60_devices[] __initconst = {
27	{ .compatible = "marvell,mv64306-devctrl", },
28	{}
29};
30
31/*
32 * Create MPSC platform devices
33 */
34static int __init mv64x60_mpsc_register_shared_pdev(struct device_node *np)
35{
36	struct platform_device *pdev;
37	struct resource r[2];
38	struct mpsc_shared_pdata pdata;
39	const phandle *ph;
40	struct device_node *mpscrouting, *mpscintr;
41	int err;
42
43	ph = of_get_property(np, "mpscrouting", NULL);
44	mpscrouting = of_find_node_by_phandle(*ph);
45	if (!mpscrouting)
46		return -ENODEV;
47
48	err = of_address_to_resource(mpscrouting, 0, &r[0]);
49	of_node_put(mpscrouting);
50	if (err)
51		return err;
52
53	ph = of_get_property(np, "mpscintr", NULL);
54	mpscintr = of_find_node_by_phandle(*ph);
55	if (!mpscintr)
56		return -ENODEV;
57
58	err = of_address_to_resource(mpscintr, 0, &r[1]);
59	of_node_put(mpscintr);
60	if (err)
61		return err;
62
63	memset(&pdata, 0, sizeof(pdata));
64
65	pdev = platform_device_alloc(MPSC_SHARED_NAME, 0);
66	if (!pdev)
67		return -ENOMEM;
68
69	err = platform_device_add_resources(pdev, r, 2);
70	if (err)
71		goto error;
72
73	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
74	if (err)
75		goto error;
76
77	err = platform_device_add(pdev);
78	if (err)
79		goto error;
80
81	return 0;
82
83error:
84	platform_device_put(pdev);
85	return err;
86}
87
88
89static int __init mv64x60_mpsc_device_setup(struct device_node *np, int id)
90{
91	struct resource r[5];
92	struct mpsc_pdata pdata;
93	struct platform_device *pdev;
94	const unsigned int *prop;
95	const phandle *ph;
96	struct device_node *sdma, *brg;
97	int err;
98	int port_number;
99
100	/* only register the shared platform device the first time through */
101	if (id == 0 && (err = mv64x60_mpsc_register_shared_pdev(np)))
102		return err;
103
104	memset(r, 0, sizeof(r));
105
106	err = of_address_to_resource(np, 0, &r[0]);
107	if (err)
108		return err;
109
110	of_irq_to_resource(np, 0, &r[4]);
111
112	ph = of_get_property(np, "sdma", NULL);
113	sdma = of_find_node_by_phandle(*ph);
114	if (!sdma)
115		return -ENODEV;
116
117	of_irq_to_resource(sdma, 0, &r[3]);
118	err = of_address_to_resource(sdma, 0, &r[1]);
119	of_node_put(sdma);
120	if (err)
121		return err;
122
123	ph = of_get_property(np, "brg", NULL);
124	brg = of_find_node_by_phandle(*ph);
125	if (!brg)
126		return -ENODEV;
127
128	err = of_address_to_resource(brg, 0, &r[2]);
129	of_node_put(brg);
130	if (err)
131		return err;
132
133	prop = of_get_property(np, "cell-index", NULL);
134	if (!prop)
135		return -ENODEV;
136	port_number = *(int *)prop;
137
138	memset(&pdata, 0, sizeof(pdata));
139
140	pdata.cache_mgmt = 1; /* All current revs need this set */
141
142	pdata.max_idle = 40; /* default */
143	prop = of_get_property(np, "max_idle", NULL);
144	if (prop)
145		pdata.max_idle = *prop;
146
147	prop = of_get_property(brg, "current-speed", NULL);
148	if (prop)
149		pdata.default_baud = *prop;
150
151	/* Default is 8 bits, no parity, no flow control */
152	pdata.default_bits = 8;
153	pdata.default_parity = 'n';
154	pdata.default_flow = 'n';
155
156	prop = of_get_property(np, "chr_1", NULL);
157	if (prop)
158		pdata.chr_1_val = *prop;
159
160	prop = of_get_property(np, "chr_2", NULL);
161	if (prop)
162		pdata.chr_2_val = *prop;
163
164	prop = of_get_property(np, "chr_10", NULL);
165	if (prop)
166		pdata.chr_10_val = *prop;
167
168	prop = of_get_property(np, "mpcr", NULL);
169	if (prop)
170		pdata.mpcr_val = *prop;
171
172	prop = of_get_property(brg, "bcr", NULL);
173	if (prop)
174		pdata.bcr_val = *prop;
175
176	pdata.brg_can_tune = 1; /* All current revs need this set */
177
178	prop = of_get_property(brg, "clock-src", NULL);
179	if (prop)
180		pdata.brg_clk_src = *prop;
181
182	prop = of_get_property(brg, "clock-frequency", NULL);
183	if (prop)
184		pdata.brg_clk_freq = *prop;
185
186	pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
187	if (!pdev)
188		return -ENOMEM;
189	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
190
191	err = platform_device_add_resources(pdev, r, 5);
192	if (err)
193		goto error;
194
195	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
196	if (err)
197		goto error;
198
199	err = platform_device_add(pdev);
200	if (err)
201		goto error;
202
203	return 0;
204
205error:
206	platform_device_put(pdev);
207	return err;
208}
209
210/*
211 * Create mv64x60_eth platform devices
212 */
213static struct platform_device * __init mv64x60_eth_register_shared_pdev(
214						struct device_node *np, int id)
215{
216	struct platform_device *pdev;
217	struct resource r[2];
218	int err;
219
220	err = of_address_to_resource(np, 0, &r[0]);
221	if (err)
222		return ERR_PTR(err);
223
224	/* register an orion mdio bus driver */
225	r[1].start = r[0].start + 0x4;
226	r[1].end = r[0].start + 0x84 - 1;
227	r[1].flags = IORESOURCE_MEM;
228
229	if (id == 0) {
230		pdev = platform_device_register_simple("orion-mdio", -1, &r[1], 1);
231		if (IS_ERR(pdev))
232			return pdev;
233	}
234
235	pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, id,
236					       &r[0], 1);
237
238	return pdev;
239}
240
241static int __init mv64x60_eth_device_setup(struct device_node *np, int id,
242					   struct platform_device *shared_pdev)
243{
244	struct resource r[1];
245	struct mv643xx_eth_platform_data pdata;
246	struct platform_device *pdev;
247	struct device_node *phy;
248	const u8 *mac_addr;
249	const int *prop;
250	const phandle *ph;
251	int err;
252
253	memset(r, 0, sizeof(r));
254	of_irq_to_resource(np, 0, &r[0]);
255
256	memset(&pdata, 0, sizeof(pdata));
257
258	pdata.shared = shared_pdev;
259
260	prop = of_get_property(np, "reg", NULL);
261	if (!prop)
262		return -ENODEV;
263	pdata.port_number = *prop;
264
265	mac_addr = of_get_mac_address(np);
266	if (mac_addr)
267		memcpy(pdata.mac_addr, mac_addr, 6);
268
269	prop = of_get_property(np, "speed", NULL);
270	if (prop)
271		pdata.speed = *prop;
272
273	prop = of_get_property(np, "tx_queue_size", NULL);
274	if (prop)
275		pdata.tx_queue_size = *prop;
276
277	prop = of_get_property(np, "rx_queue_size", NULL);
278	if (prop)
279		pdata.rx_queue_size = *prop;
280
281	prop = of_get_property(np, "tx_sram_addr", NULL);
282	if (prop)
283		pdata.tx_sram_addr = *prop;
284
285	prop = of_get_property(np, "tx_sram_size", NULL);
286	if (prop)
287		pdata.tx_sram_size = *prop;
288
289	prop = of_get_property(np, "rx_sram_addr", NULL);
290	if (prop)
291		pdata.rx_sram_addr = *prop;
292
293	prop = of_get_property(np, "rx_sram_size", NULL);
294	if (prop)
295		pdata.rx_sram_size = *prop;
296
297	ph = of_get_property(np, "phy", NULL);
298	if (!ph)
299		return -ENODEV;
300
301	phy = of_find_node_by_phandle(*ph);
302	if (phy == NULL)
303		return -ENODEV;
304
305	prop = of_get_property(phy, "reg", NULL);
306	if (prop)
307		pdata.phy_addr = MV643XX_ETH_PHY_ADDR(*prop);
308
309	of_node_put(phy);
310
311	pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
312	if (!pdev)
313		return -ENOMEM;
314
315	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
316	err = platform_device_add_resources(pdev, r, 1);
317	if (err)
318		goto error;
319
320	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
321	if (err)
322		goto error;
323
324	err = platform_device_add(pdev);
325	if (err)
326		goto error;
327
328	return 0;
329
330error:
331	platform_device_put(pdev);
332	return err;
333}
334
335/*
336 * Create mv64x60_i2c platform devices
337 */
338static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
339{
340	struct resource r[2];
341	struct platform_device *pdev;
342	struct mv64xxx_i2c_pdata pdata;
343	const unsigned int *prop;
344	int err;
345
346	memset(r, 0, sizeof(r));
347
348	err = of_address_to_resource(np, 0, &r[0]);
349	if (err)
350		return err;
351
352	of_irq_to_resource(np, 0, &r[1]);
353
354	memset(&pdata, 0, sizeof(pdata));
355
356	pdata.freq_m = 8;	/* default */
357	prop = of_get_property(np, "freq_m", NULL);
358	if (prop)
359		pdata.freq_m = *prop;
360
361	pdata.freq_n = 3;	/* default */
362	prop = of_get_property(np, "freq_n", NULL);
363	if (prop)
364		pdata.freq_n = *prop;
365
366	pdata.timeout = 1000;				/* default: 1 second */
367
368	pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
369	if (!pdev)
370		return -ENOMEM;
371
372	err = platform_device_add_resources(pdev, r, 2);
373	if (err)
374		goto error;
375
376	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
377	if (err)
378		goto error;
379
380	err = platform_device_add(pdev);
381	if (err)
382		goto error;
383
384	return 0;
385
386error:
387	platform_device_put(pdev);
388	return err;
389}
390
391/*
392 * Create mv64x60_wdt platform devices
393 */
394static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
395{
396	struct resource r;
397	struct platform_device *pdev;
398	struct mv64x60_wdt_pdata pdata;
399	const unsigned int *prop;
400	int err;
401
402	err = of_address_to_resource(np, 0, &r);
403	if (err)
404		return err;
405
406	memset(&pdata, 0, sizeof(pdata));
407
408	pdata.timeout = 10;			/* Default: 10 seconds */
409
410	np = of_get_parent(np);
411	if (!np)
412		return -ENODEV;
413
414	prop = of_get_property(np, "clock-frequency", NULL);
415	of_node_put(np);
416	if (!prop)
417		return -ENODEV;
418	pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
419
420	pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
421	if (!pdev)
422		return -ENOMEM;
423
424	err = platform_device_add_resources(pdev, &r, 1);
425	if (err)
426		goto error;
427
428	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
429	if (err)
430		goto error;
431
432	err = platform_device_add(pdev);
433	if (err)
434		goto error;
435
436	return 0;
437
438error:
439	platform_device_put(pdev);
440	return err;
441}
442
443static int __init mv64x60_device_setup(void)
444{
445	struct device_node *np, *np2;
446	struct platform_device *pdev;
447	int id, id2;
448	int err;
449
450	id = 0;
451	for_each_compatible_node(np, NULL, "marvell,mv64360-mpsc") {
452		err = mv64x60_mpsc_device_setup(np, id++);
453		if (err)
454			printk(KERN_ERR "Failed to initialize MV64x60 "
455					"serial device %s: error %d.\n",
456					np->full_name, err);
457	}
458
459	id = 0;
460	id2 = 0;
461	for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
462		pdev = mv64x60_eth_register_shared_pdev(np, id++);
463		if (IS_ERR(pdev)) {
464			err = PTR_ERR(pdev);
465			printk(KERN_ERR "Failed to initialize MV64x60 "
466					"network block %s: error %d.\n",
467					np->full_name, err);
468			continue;
469		}
470		for_each_child_of_node(np, np2) {
471			if (!of_device_is_compatible(np2,
472					"marvell,mv64360-eth"))
473				continue;
474			err = mv64x60_eth_device_setup(np2, id2++, pdev);
475			if (err)
476				printk(KERN_ERR "Failed to initialize "
477						"MV64x60 network device %s: "
478						"error %d.\n",
479						np2->full_name, err);
480		}
481	}
482
483	id = 0;
484	for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
485		err = mv64x60_i2c_device_setup(np, id++);
486		if (err)
487			printk(KERN_ERR "Failed to initialize MV64x60 I2C "
488					"bus %s: error %d.\n",
489					np->full_name, err);
490	}
491
492	/* support up to one watchdog timer */
493	np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
494	if (np) {
495		if ((err = mv64x60_wdt_device_setup(np, id)))
496			printk(KERN_ERR "Failed to initialize MV64x60 "
497					"Watchdog %s: error %d.\n",
498					np->full_name, err);
499		of_node_put(np);
500	}
501
502	/* Now add every node that is on the device bus */
503	for_each_compatible_node(np, NULL, "marvell,mv64360")
504		of_platform_bus_probe(np, of_mv64x60_devices, NULL);
505
506	return 0;
507}
508arch_initcall(mv64x60_device_setup);
509
510static int __init mv64x60_add_mpsc_console(void)
511{
512	struct device_node *np = NULL;
513	const char *prop;
514
515	prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
516	if (prop == NULL)
517		goto not_mpsc;
518
519	np = of_find_node_by_path(prop);
520	if (!np)
521		goto not_mpsc;
522
523	if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
524		goto not_mpsc;
525
526	prop = of_get_property(np, "cell-index", NULL);
527	if (!prop)
528		goto not_mpsc;
529
530	add_preferred_console("ttyMM", *(int *)prop, NULL);
531
532not_mpsc:
533	return 0;
534}
535console_initcall(mv64x60_add_mpsc_console);
536