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#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 struct of_device_id __initdata of_mv64x60_devices[] = {
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[1];
218 int err;
219
220 err = of_address_to_resource(np, 0, &r[0]);
221 if (err)
222 return ERR_PTR(err);
223
224 pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, id,
225 r, 1);
226 return pdev;
227}
228
229static int __init mv64x60_eth_device_setup(struct device_node *np, int id,
230 struct platform_device *shared_pdev)
231{
232 struct resource r[1];
233 struct mv643xx_eth_platform_data pdata;
234 struct platform_device *pdev;
235 struct device_node *phy;
236 const u8 *mac_addr;
237 const int *prop;
238 const phandle *ph;
239 int err;
240
241 memset(r, 0, sizeof(r));
242 of_irq_to_resource(np, 0, &r[0]);
243
244 memset(&pdata, 0, sizeof(pdata));
245
246 pdata.shared = shared_pdev;
247
248 prop = of_get_property(np, "reg", NULL);
249 if (!prop)
250 return -ENODEV;
251 pdata.port_number = *prop;
252
253 mac_addr = of_get_mac_address(np);
254 if (mac_addr)
255 memcpy(pdata.mac_addr, mac_addr, 6);
256
257 prop = of_get_property(np, "speed", NULL);
258 if (prop)
259 pdata.speed = *prop;
260
261 prop = of_get_property(np, "tx_queue_size", NULL);
262 if (prop)
263 pdata.tx_queue_size = *prop;
264
265 prop = of_get_property(np, "rx_queue_size", NULL);
266 if (prop)
267 pdata.rx_queue_size = *prop;
268
269 prop = of_get_property(np, "tx_sram_addr", NULL);
270 if (prop)
271 pdata.tx_sram_addr = *prop;
272
273 prop = of_get_property(np, "tx_sram_size", NULL);
274 if (prop)
275 pdata.tx_sram_size = *prop;
276
277 prop = of_get_property(np, "rx_sram_addr", NULL);
278 if (prop)
279 pdata.rx_sram_addr = *prop;
280
281 prop = of_get_property(np, "rx_sram_size", NULL);
282 if (prop)
283 pdata.rx_sram_size = *prop;
284
285 ph = of_get_property(np, "phy", NULL);
286 if (!ph)
287 return -ENODEV;
288
289 phy = of_find_node_by_phandle(*ph);
290 if (phy == NULL)
291 return -ENODEV;
292
293 prop = of_get_property(phy, "reg", NULL);
294 if (prop)
295 pdata.phy_addr = MV643XX_ETH_PHY_ADDR(*prop);
296
297 of_node_put(phy);
298
299 pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
300 if (!pdev)
301 return -ENOMEM;
302
303 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
304 err = platform_device_add_resources(pdev, r, 1);
305 if (err)
306 goto error;
307
308 err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
309 if (err)
310 goto error;
311
312 err = platform_device_add(pdev);
313 if (err)
314 goto error;
315
316 return 0;
317
318error:
319 platform_device_put(pdev);
320 return err;
321}
322
323/*
324 * Create mv64x60_i2c platform devices
325 */
326static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
327{
328 struct resource r[2];
329 struct platform_device *pdev;
330 struct mv64xxx_i2c_pdata pdata;
331 const unsigned int *prop;
332 int err;
333
334 memset(r, 0, sizeof(r));
335
336 err = of_address_to_resource(np, 0, &r[0]);
337 if (err)
338 return err;
339
340 of_irq_to_resource(np, 0, &r[1]);
341
342 memset(&pdata, 0, sizeof(pdata));
343
344 pdata.freq_m = 8; /* default */
345 prop = of_get_property(np, "freq_m", NULL);
346 if (prop)
347 pdata.freq_m = *prop;
348
349 pdata.freq_m = 3; /* default */
350 prop = of_get_property(np, "freq_n", NULL);
351 if (prop)
352 pdata.freq_n = *prop;
353
354 pdata.timeout = 1000; /* default: 1 second */
355
356 pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
357 if (!pdev)
358 return -ENOMEM;
359
360 err = platform_device_add_resources(pdev, r, 2);
361 if (err)
362 goto error;
363
364 err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
365 if (err)
366 goto error;
367
368 err = platform_device_add(pdev);
369 if (err)
370 goto error;
371
372 return 0;
373
374error:
375 platform_device_put(pdev);
376 return err;
377}
378
379/*
380 * Create mv64x60_wdt platform devices
381 */
382static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
383{
384 struct resource r;
385 struct platform_device *pdev;
386 struct mv64x60_wdt_pdata pdata;
387 const unsigned int *prop;
388 int err;
389
390 err = of_address_to_resource(np, 0, &r);
391 if (err)
392 return err;
393
394 memset(&pdata, 0, sizeof(pdata));
395
396 pdata.timeout = 10; /* Default: 10 seconds */
397
398 np = of_get_parent(np);
399 if (!np)
400 return -ENODEV;
401
402 prop = of_get_property(np, "clock-frequency", NULL);
403 of_node_put(np);
404 if (!prop)
405 return -ENODEV;
406 pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
407
408 pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
409 if (!pdev)
410 return -ENOMEM;
411
412 err = platform_device_add_resources(pdev, &r, 1);
413 if (err)
414 goto error;
415
416 err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
417 if (err)
418 goto error;
419
420 err = platform_device_add(pdev);
421 if (err)
422 goto error;
423
424 return 0;
425
426error:
427 platform_device_put(pdev);
428 return err;
429}
430
431static int __init mv64x60_device_setup(void)
432{
433 struct device_node *np, *np2;
434 struct platform_device *pdev;
435 int id, id2;
436 int err;
437
438 id = 0;
439 for_each_compatible_node(np, "serial", "marvell,mv64360-mpsc") {
440 err = mv64x60_mpsc_device_setup(np, id++);
441 if (err)
442 printk(KERN_ERR "Failed to initialize MV64x60 "
443 "serial device %s: error %d.\n",
444 np->full_name, err);
445 }
446
447 id = 0;
448 id2 = 0;
449 for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
450 pdev = mv64x60_eth_register_shared_pdev(np, id++);
451 if (IS_ERR(pdev)) {
452 err = PTR_ERR(pdev);
453 printk(KERN_ERR "Failed to initialize MV64x60 "
454 "network block %s: error %d.\n",
455 np->full_name, err);
456 continue;
457 }
458 for_each_child_of_node(np, np2) {
459 if (!of_device_is_compatible(np2,
460 "marvell,mv64360-eth"))
461 continue;
462 err = mv64x60_eth_device_setup(np2, id2++, pdev);
463 if (err)
464 printk(KERN_ERR "Failed to initialize "
465 "MV64x60 network device %s: "
466 "error %d.\n",
467 np2->full_name, err);
468 }
469 }
470
471 id = 0;
472 for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
473 err = mv64x60_i2c_device_setup(np, id++);
474 if (err)
475 printk(KERN_ERR "Failed to initialize MV64x60 I2C "
476 "bus %s: error %d.\n",
477 np->full_name, err);
478 }
479
480 /* support up to one watchdog timer */
481 np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
482 if (np) {
483 if ((err = mv64x60_wdt_device_setup(np, id)))
484 printk(KERN_ERR "Failed to initialize MV64x60 "
485 "Watchdog %s: error %d.\n",
486 np->full_name, err);
487 of_node_put(np);
488 }
489
490 /* Now add every node that is on the device bus */
491 for_each_compatible_node(np, NULL, "marvell,mv64360")
492 of_platform_bus_probe(np, of_mv64x60_devices, NULL);
493
494 return 0;
495}
496arch_initcall(mv64x60_device_setup);
497
498static int __init mv64x60_add_mpsc_console(void)
499{
500 struct device_node *np = NULL;
501 const char *prop;
502
503 prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
504 if (prop == NULL)
505 goto not_mpsc;
506
507 np = of_find_node_by_path(prop);
508 if (!np)
509 goto not_mpsc;
510
511 if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
512 goto not_mpsc;
513
514 prop = of_get_property(np, "cell-index", NULL);
515 if (!prop)
516 goto not_mpsc;
517
518 add_preferred_console("ttyMM", *(int *)prop, NULL);
519
520not_mpsc:
521 return 0;
522}
523console_initcall(mv64x60_add_mpsc_console);