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