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
26 static const struct of_device_id of_mv64x60_devices[] __initconst = {
27 { .compatible = "marvell,mv64306-devctrl", },
28 {}
29 };
30
31 /*
32 * Create MPSC platform devices
33 */
mv64x60_mpsc_register_shared_pdev(struct device_node * np)34 static 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
83 error:
84 platform_device_put(pdev);
85 return err;
86 }
87
88
mv64x60_mpsc_device_setup(struct device_node * np,int id)89 static 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
205 error:
206 platform_device_put(pdev);
207 return err;
208 }
209
210 /*
211 * Create mv64x60_eth platform devices
212 */
mv64x60_eth_register_shared_pdev(struct device_node * np,int id)213 static 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
mv64x60_eth_device_setup(struct device_node * np,int id,struct platform_device * shared_pdev)241 static 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
330 error:
331 platform_device_put(pdev);
332 return err;
333 }
334
335 /*
336 * Create mv64x60_i2c platform devices
337 */
mv64x60_i2c_device_setup(struct device_node * np,int id)338 static 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
386 error:
387 platform_device_put(pdev);
388 return err;
389 }
390
391 /*
392 * Create mv64x60_wdt platform devices
393 */
mv64x60_wdt_device_setup(struct device_node * np,int id)394 static 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
438 error:
439 platform_device_put(pdev);
440 return err;
441 }
442
mv64x60_device_setup(void)443 static 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 %pOF: error %d.\n",
456 np, 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 %pOF: error %d.\n",
467 np, 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 %pOF: "
478 "error %d.\n",
479 np2, 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 %pOF: error %d.\n",
489 np, 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 %pOF: error %d.\n",
498 np, 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 }
508 arch_initcall(mv64x60_device_setup);
509
mv64x60_add_mpsc_console(void)510 static 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
532 not_mpsc:
533 return 0;
534 }
535 console_initcall(mv64x60_add_mpsc_console);
536