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89e59053 SK |
1 | // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) |
2 | // Copyright(c) 2015-18 Intel Corporation. | |
3 | ||
4 | /* | |
5 | * stream.c - SoundWire Bus stream operations. | |
6 | */ | |
7 | ||
8 | #include <linux/delay.h> | |
9 | #include <linux/device.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/mod_devicetable.h> | |
13 | #include <linux/slab.h> | |
f8101c74 | 14 | #include <linux/soundwire/sdw_registers.h> |
89e59053 SK |
15 | #include <linux/soundwire/sdw.h> |
16 | #include "bus.h" | |
17 | ||
f8101c74 SK |
18 | static int _sdw_program_slave_port_params(struct sdw_bus *bus, |
19 | struct sdw_slave *slave, | |
20 | struct sdw_transport_params *t_params, | |
21 | enum sdw_dpn_type type) | |
22 | { | |
23 | u32 addr1, addr2, addr3, addr4; | |
24 | int ret; | |
25 | u16 wbuf; | |
26 | ||
27 | if (bus->params.next_bank) { | |
28 | addr1 = SDW_DPN_OFFSETCTRL2_B1(t_params->port_num); | |
29 | addr2 = SDW_DPN_BLOCKCTRL3_B1(t_params->port_num); | |
30 | addr3 = SDW_DPN_SAMPLECTRL2_B1(t_params->port_num); | |
31 | addr4 = SDW_DPN_HCTRL_B1(t_params->port_num); | |
32 | } else { | |
33 | addr1 = SDW_DPN_OFFSETCTRL2_B0(t_params->port_num); | |
34 | addr2 = SDW_DPN_BLOCKCTRL3_B0(t_params->port_num); | |
35 | addr3 = SDW_DPN_SAMPLECTRL2_B0(t_params->port_num); | |
36 | addr4 = SDW_DPN_HCTRL_B0(t_params->port_num); | |
37 | } | |
38 | ||
39 | /* Program DPN_OffsetCtrl2 registers */ | |
40 | ret = sdw_write(slave, addr1, t_params->offset2); | |
41 | if (ret < 0) { | |
42 | dev_err(bus->dev, "DPN_OffsetCtrl2 register write failed"); | |
43 | return ret; | |
44 | } | |
45 | ||
46 | /* Program DPN_BlockCtrl3 register */ | |
47 | ret = sdw_write(slave, addr2, t_params->blk_pkg_mode); | |
48 | if (ret < 0) { | |
49 | dev_err(bus->dev, "DPN_BlockCtrl3 register write failed"); | |
50 | return ret; | |
51 | } | |
52 | ||
53 | /* | |
54 | * Data ports are FULL, SIMPLE and REDUCED. This function handles | |
55 | * FULL and REDUCED only and and beyond this point only FULL is | |
56 | * handled, so bail out if we are not FULL data port type | |
57 | */ | |
58 | if (type != SDW_DPN_FULL) | |
59 | return ret; | |
60 | ||
61 | /* Program DPN_SampleCtrl2 register */ | |
62 | wbuf = (t_params->sample_interval - 1); | |
63 | wbuf &= SDW_DPN_SAMPLECTRL_HIGH; | |
64 | wbuf >>= SDW_REG_SHIFT(SDW_DPN_SAMPLECTRL_HIGH); | |
65 | ||
66 | ret = sdw_write(slave, addr3, wbuf); | |
67 | if (ret < 0) { | |
68 | dev_err(bus->dev, "DPN_SampleCtrl2 register write failed"); | |
69 | return ret; | |
70 | } | |
71 | ||
72 | /* Program DPN_HCtrl register */ | |
73 | wbuf = t_params->hstart; | |
74 | wbuf <<= SDW_REG_SHIFT(SDW_DPN_HCTRL_HSTART); | |
75 | wbuf |= t_params->hstop; | |
76 | ||
77 | ret = sdw_write(slave, addr4, wbuf); | |
78 | if (ret < 0) | |
79 | dev_err(bus->dev, "DPN_HCtrl register write failed"); | |
80 | ||
81 | return ret; | |
82 | } | |
83 | ||
84 | static int sdw_program_slave_port_params(struct sdw_bus *bus, | |
85 | struct sdw_slave_runtime *s_rt, | |
86 | struct sdw_port_runtime *p_rt) | |
87 | { | |
88 | struct sdw_transport_params *t_params = &p_rt->transport_params; | |
89 | struct sdw_port_params *p_params = &p_rt->port_params; | |
90 | struct sdw_slave_prop *slave_prop = &s_rt->slave->prop; | |
91 | u32 addr1, addr2, addr3, addr4, addr5, addr6; | |
92 | struct sdw_dpn_prop *dpn_prop; | |
93 | int ret; | |
94 | u8 wbuf; | |
95 | ||
96 | dpn_prop = sdw_get_slave_dpn_prop(s_rt->slave, | |
97 | s_rt->direction, | |
98 | t_params->port_num); | |
99 | if (!dpn_prop) | |
100 | return -EINVAL; | |
101 | ||
102 | addr1 = SDW_DPN_PORTCTRL(t_params->port_num); | |
103 | addr2 = SDW_DPN_BLOCKCTRL1(t_params->port_num); | |
104 | ||
105 | if (bus->params.next_bank) { | |
106 | addr3 = SDW_DPN_SAMPLECTRL1_B1(t_params->port_num); | |
107 | addr4 = SDW_DPN_OFFSETCTRL1_B1(t_params->port_num); | |
108 | addr5 = SDW_DPN_BLOCKCTRL2_B1(t_params->port_num); | |
109 | addr6 = SDW_DPN_LANECTRL_B1(t_params->port_num); | |
110 | ||
111 | } else { | |
112 | addr3 = SDW_DPN_SAMPLECTRL1_B0(t_params->port_num); | |
113 | addr4 = SDW_DPN_OFFSETCTRL1_B0(t_params->port_num); | |
114 | addr5 = SDW_DPN_BLOCKCTRL2_B0(t_params->port_num); | |
115 | addr6 = SDW_DPN_LANECTRL_B0(t_params->port_num); | |
116 | } | |
117 | ||
118 | /* Program DPN_PortCtrl register */ | |
119 | wbuf = p_params->data_mode << SDW_REG_SHIFT(SDW_DPN_PORTCTRL_DATAMODE); | |
120 | wbuf |= p_params->flow_mode; | |
121 | ||
122 | ret = sdw_update(s_rt->slave, addr1, 0xF, wbuf); | |
123 | if (ret < 0) { | |
124 | dev_err(&s_rt->slave->dev, | |
125 | "DPN_PortCtrl register write failed for port %d", | |
126 | t_params->port_num); | |
127 | return ret; | |
128 | } | |
129 | ||
130 | /* Program DPN_BlockCtrl1 register */ | |
131 | ret = sdw_write(s_rt->slave, addr2, (p_params->bps - 1)); | |
132 | if (ret < 0) { | |
133 | dev_err(&s_rt->slave->dev, | |
134 | "DPN_BlockCtrl1 register write failed for port %d", | |
135 | t_params->port_num); | |
136 | return ret; | |
137 | } | |
138 | ||
139 | /* Program DPN_SampleCtrl1 register */ | |
140 | wbuf = (t_params->sample_interval - 1) & SDW_DPN_SAMPLECTRL_LOW; | |
141 | ret = sdw_write(s_rt->slave, addr3, wbuf); | |
142 | if (ret < 0) { | |
143 | dev_err(&s_rt->slave->dev, | |
144 | "DPN_SampleCtrl1 register write failed for port %d", | |
145 | t_params->port_num); | |
146 | return ret; | |
147 | } | |
148 | ||
149 | /* Program DPN_OffsetCtrl1 registers */ | |
150 | ret = sdw_write(s_rt->slave, addr4, t_params->offset1); | |
151 | if (ret < 0) { | |
152 | dev_err(&s_rt->slave->dev, | |
153 | "DPN_OffsetCtrl1 register write failed for port %d", | |
154 | t_params->port_num); | |
155 | return ret; | |
156 | } | |
157 | ||
158 | /* Program DPN_BlockCtrl2 register*/ | |
159 | if (t_params->blk_grp_ctrl_valid) { | |
160 | ret = sdw_write(s_rt->slave, addr5, t_params->blk_grp_ctrl); | |
161 | if (ret < 0) { | |
162 | dev_err(&s_rt->slave->dev, | |
163 | "DPN_BlockCtrl2 reg write failed for port %d", | |
164 | t_params->port_num); | |
165 | return ret; | |
166 | } | |
167 | } | |
168 | ||
169 | /* program DPN_LaneCtrl register */ | |
170 | if (slave_prop->lane_control_support) { | |
171 | ret = sdw_write(s_rt->slave, addr6, t_params->lane_ctrl); | |
172 | if (ret < 0) { | |
173 | dev_err(&s_rt->slave->dev, | |
174 | "DPN_LaneCtrl register write failed for port %d", | |
175 | t_params->port_num); | |
176 | return ret; | |
177 | } | |
178 | } | |
179 | ||
180 | if (dpn_prop->type != SDW_DPN_SIMPLE) { | |
181 | ret = _sdw_program_slave_port_params(bus, s_rt->slave, | |
182 | t_params, dpn_prop->type); | |
183 | if (ret < 0) | |
184 | dev_err(&s_rt->slave->dev, | |
185 | "Transport reg write failed for port: %d", | |
186 | t_params->port_num); | |
187 | } | |
188 | ||
189 | return ret; | |
190 | } | |
191 | ||
192 | static int sdw_program_master_port_params(struct sdw_bus *bus, | |
193 | struct sdw_port_runtime *p_rt) | |
194 | { | |
195 | int ret; | |
196 | ||
197 | /* | |
198 | * we need to set transport and port parameters for the port. | |
199 | * Transport parameters refers to the smaple interval, offsets and | |
200 | * hstart/stop etc of the data. Port parameters refers to word | |
201 | * length, flow mode etc of the port | |
202 | */ | |
203 | ret = bus->port_ops->dpn_set_port_transport_params(bus, | |
204 | &p_rt->transport_params, | |
205 | bus->params.next_bank); | |
206 | if (ret < 0) | |
207 | return ret; | |
208 | ||
209 | return bus->port_ops->dpn_set_port_params(bus, | |
210 | &p_rt->port_params, | |
211 | bus->params.next_bank); | |
212 | } | |
213 | ||
214 | /** | |
215 | * sdw_program_port_params() - Programs transport parameters of Master(s) | |
216 | * and Slave(s) | |
217 | * | |
218 | * @m_rt: Master stream runtime | |
219 | */ | |
220 | static int sdw_program_port_params(struct sdw_master_runtime *m_rt) | |
221 | { | |
222 | struct sdw_slave_runtime *s_rt = NULL; | |
223 | struct sdw_bus *bus = m_rt->bus; | |
224 | struct sdw_port_runtime *p_rt; | |
225 | int ret = 0; | |
226 | ||
227 | /* Program transport & port parameters for Slave(s) */ | |
228 | list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) { | |
229 | list_for_each_entry(p_rt, &s_rt->port_list, port_node) { | |
230 | ret = sdw_program_slave_port_params(bus, s_rt, p_rt); | |
231 | if (ret < 0) | |
232 | return ret; | |
233 | } | |
234 | } | |
235 | ||
236 | /* Program transport & port parameters for Master(s) */ | |
237 | list_for_each_entry(p_rt, &m_rt->port_list, port_node) { | |
238 | ret = sdw_program_master_port_params(bus, p_rt); | |
239 | if (ret < 0) | |
240 | return ret; | |
241 | } | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
89e59053 SK |
246 | /** |
247 | * sdw_release_stream() - Free the assigned stream runtime | |
248 | * | |
249 | * @stream: SoundWire stream runtime | |
250 | * | |
251 | * sdw_release_stream should be called only once per stream | |
252 | */ | |
253 | void sdw_release_stream(struct sdw_stream_runtime *stream) | |
254 | { | |
255 | kfree(stream); | |
256 | } | |
257 | EXPORT_SYMBOL(sdw_release_stream); | |
258 | ||
259 | /** | |
260 | * sdw_alloc_stream() - Allocate and return stream runtime | |
261 | * | |
262 | * @stream_name: SoundWire stream name | |
263 | * | |
264 | * Allocates a SoundWire stream runtime instance. | |
265 | * sdw_alloc_stream should be called only once per stream. Typically | |
266 | * invoked from ALSA/ASoC machine/platform driver. | |
267 | */ | |
268 | struct sdw_stream_runtime *sdw_alloc_stream(char *stream_name) | |
269 | { | |
270 | struct sdw_stream_runtime *stream; | |
271 | ||
272 | stream = kzalloc(sizeof(*stream), GFP_KERNEL); | |
273 | if (!stream) | |
274 | return NULL; | |
275 | ||
276 | stream->name = stream_name; | |
277 | stream->state = SDW_STREAM_ALLOCATED; | |
278 | ||
279 | return stream; | |
280 | } | |
281 | EXPORT_SYMBOL(sdw_alloc_stream); | |
282 | ||
283 | /** | |
284 | * sdw_alloc_master_rt() - Allocates and initialize Master runtime handle | |
285 | * | |
286 | * @bus: SDW bus instance | |
287 | * @stream_config: Stream configuration | |
288 | * @stream: Stream runtime handle. | |
289 | * | |
290 | * This function is to be called with bus_lock held. | |
291 | */ | |
292 | static struct sdw_master_runtime | |
293 | *sdw_alloc_master_rt(struct sdw_bus *bus, | |
294 | struct sdw_stream_config *stream_config, | |
295 | struct sdw_stream_runtime *stream) | |
296 | { | |
297 | struct sdw_master_runtime *m_rt; | |
298 | ||
299 | m_rt = stream->m_rt; | |
300 | ||
301 | /* | |
302 | * check if Master is already allocated (as a result of Slave adding | |
303 | * it first), if so skip allocation and go to configure | |
304 | */ | |
305 | if (m_rt) | |
306 | goto stream_config; | |
307 | ||
308 | m_rt = kzalloc(sizeof(*m_rt), GFP_KERNEL); | |
309 | if (!m_rt) | |
310 | return NULL; | |
311 | ||
312 | /* Initialization of Master runtime handle */ | |
bbe7379d | 313 | INIT_LIST_HEAD(&m_rt->port_list); |
89e59053 SK |
314 | INIT_LIST_HEAD(&m_rt->slave_rt_list); |
315 | stream->m_rt = m_rt; | |
316 | ||
317 | list_add_tail(&m_rt->bus_node, &bus->m_rt_list); | |
318 | ||
319 | stream_config: | |
320 | m_rt->ch_count = stream_config->ch_count; | |
321 | m_rt->bus = bus; | |
322 | m_rt->stream = stream; | |
323 | m_rt->direction = stream_config->direction; | |
324 | ||
325 | return m_rt; | |
326 | } | |
327 | ||
328 | /** | |
329 | * sdw_alloc_slave_rt() - Allocate and initialize Slave runtime handle. | |
330 | * | |
331 | * @slave: Slave handle | |
332 | * @stream_config: Stream configuration | |
333 | * @stream: Stream runtime handle | |
334 | * | |
335 | * This function is to be called with bus_lock held. | |
336 | */ | |
337 | static struct sdw_slave_runtime | |
338 | *sdw_alloc_slave_rt(struct sdw_slave *slave, | |
339 | struct sdw_stream_config *stream_config, | |
340 | struct sdw_stream_runtime *stream) | |
341 | { | |
342 | struct sdw_slave_runtime *s_rt = NULL; | |
343 | ||
344 | s_rt = kzalloc(sizeof(*s_rt), GFP_KERNEL); | |
345 | if (!s_rt) | |
346 | return NULL; | |
347 | ||
bbe7379d | 348 | INIT_LIST_HEAD(&s_rt->port_list); |
89e59053 SK |
349 | s_rt->ch_count = stream_config->ch_count; |
350 | s_rt->direction = stream_config->direction; | |
351 | s_rt->slave = slave; | |
352 | ||
353 | return s_rt; | |
354 | } | |
355 | ||
bbe7379d SK |
356 | static void sdw_master_port_release(struct sdw_bus *bus, |
357 | struct sdw_master_runtime *m_rt) | |
358 | { | |
359 | struct sdw_port_runtime *p_rt, *_p_rt; | |
360 | ||
361 | list_for_each_entry_safe(p_rt, _p_rt, | |
362 | &m_rt->port_list, port_node) { | |
363 | list_del(&p_rt->port_node); | |
364 | kfree(p_rt); | |
365 | } | |
366 | } | |
367 | ||
368 | static void sdw_slave_port_release(struct sdw_bus *bus, | |
369 | struct sdw_slave *slave, | |
370 | struct sdw_stream_runtime *stream) | |
371 | { | |
372 | struct sdw_port_runtime *p_rt, *_p_rt; | |
373 | struct sdw_master_runtime *m_rt = stream->m_rt; | |
374 | struct sdw_slave_runtime *s_rt; | |
375 | ||
376 | list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) { | |
377 | if (s_rt->slave != slave) | |
378 | continue; | |
379 | ||
380 | list_for_each_entry_safe(p_rt, _p_rt, | |
381 | &s_rt->port_list, port_node) { | |
382 | list_del(&p_rt->port_node); | |
383 | kfree(p_rt); | |
384 | } | |
385 | } | |
386 | } | |
387 | ||
89e59053 SK |
388 | /** |
389 | * sdw_release_slave_stream() - Free Slave(s) runtime handle | |
390 | * | |
391 | * @slave: Slave handle. | |
392 | * @stream: Stream runtime handle. | |
393 | * | |
394 | * This function is to be called with bus_lock held. | |
395 | */ | |
396 | static void sdw_release_slave_stream(struct sdw_slave *slave, | |
397 | struct sdw_stream_runtime *stream) | |
398 | { | |
399 | struct sdw_slave_runtime *s_rt, *_s_rt; | |
400 | struct sdw_master_runtime *m_rt = stream->m_rt; | |
401 | ||
402 | /* Retrieve Slave runtime handle */ | |
403 | list_for_each_entry_safe(s_rt, _s_rt, | |
404 | &m_rt->slave_rt_list, m_rt_node) { | |
405 | ||
406 | if (s_rt->slave == slave) { | |
407 | list_del(&s_rt->m_rt_node); | |
408 | kfree(s_rt); | |
409 | return; | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
414 | /** | |
415 | * sdw_release_master_stream() - Free Master runtime handle | |
416 | * | |
417 | * @stream: Stream runtime handle. | |
418 | * | |
419 | * This function is to be called with bus_lock held | |
420 | * It frees the Master runtime handle and associated Slave(s) runtime | |
421 | * handle. If this is called first then sdw_release_slave_stream() will have | |
422 | * no effect as Slave(s) runtime handle would already be freed up. | |
423 | */ | |
424 | static void sdw_release_master_stream(struct sdw_stream_runtime *stream) | |
425 | { | |
426 | struct sdw_master_runtime *m_rt = stream->m_rt; | |
427 | struct sdw_slave_runtime *s_rt, *_s_rt; | |
428 | ||
429 | list_for_each_entry_safe(s_rt, _s_rt, | |
430 | &m_rt->slave_rt_list, m_rt_node) | |
431 | sdw_stream_remove_slave(s_rt->slave, stream); | |
432 | ||
433 | list_del(&m_rt->bus_node); | |
434 | } | |
435 | ||
436 | /** | |
437 | * sdw_stream_remove_master() - Remove master from sdw_stream | |
438 | * | |
439 | * @bus: SDW Bus instance | |
440 | * @stream: SoundWire stream | |
441 | * | |
bbe7379d | 442 | * This removes and frees port_rt and master_rt from a stream |
89e59053 SK |
443 | */ |
444 | int sdw_stream_remove_master(struct sdw_bus *bus, | |
445 | struct sdw_stream_runtime *stream) | |
446 | { | |
447 | mutex_lock(&bus->bus_lock); | |
448 | ||
449 | sdw_release_master_stream(stream); | |
bbe7379d | 450 | sdw_master_port_release(bus, stream->m_rt); |
89e59053 SK |
451 | stream->state = SDW_STREAM_RELEASED; |
452 | kfree(stream->m_rt); | |
453 | stream->m_rt = NULL; | |
454 | ||
455 | mutex_unlock(&bus->bus_lock); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | EXPORT_SYMBOL(sdw_stream_remove_master); | |
460 | ||
461 | /** | |
462 | * sdw_stream_remove_slave() - Remove slave from sdw_stream | |
463 | * | |
464 | * @slave: SDW Slave instance | |
465 | * @stream: SoundWire stream | |
466 | * | |
bbe7379d | 467 | * This removes and frees port_rt and slave_rt from a stream |
89e59053 SK |
468 | */ |
469 | int sdw_stream_remove_slave(struct sdw_slave *slave, | |
470 | struct sdw_stream_runtime *stream) | |
471 | { | |
472 | mutex_lock(&slave->bus->bus_lock); | |
473 | ||
bbe7379d | 474 | sdw_slave_port_release(slave->bus, slave, stream); |
89e59053 SK |
475 | sdw_release_slave_stream(slave, stream); |
476 | ||
477 | mutex_unlock(&slave->bus->bus_lock); | |
478 | ||
479 | return 0; | |
480 | } | |
481 | EXPORT_SYMBOL(sdw_stream_remove_slave); | |
482 | ||
483 | /** | |
484 | * sdw_config_stream() - Configure the allocated stream | |
485 | * | |
486 | * @dev: SDW device | |
487 | * @stream: SoundWire stream | |
488 | * @stream_config: Stream configuration for audio stream | |
489 | * @is_slave: is API called from Slave or Master | |
490 | * | |
491 | * This function is to be called with bus_lock held. | |
492 | */ | |
493 | static int sdw_config_stream(struct device *dev, | |
494 | struct sdw_stream_runtime *stream, | |
495 | struct sdw_stream_config *stream_config, bool is_slave) | |
496 | { | |
497 | /* | |
498 | * Update the stream rate, channel and bps based on data | |
499 | * source. For more than one data source (multilink), | |
500 | * match the rate, bps, stream type and increment number of channels. | |
501 | * | |
502 | * If rate/bps is zero, it means the values are not set, so skip | |
503 | * comparison and allow the value to be set and stored in stream | |
504 | */ | |
505 | if (stream->params.rate && | |
506 | stream->params.rate != stream_config->frame_rate) { | |
507 | dev_err(dev, "rate not matching, stream:%s", stream->name); | |
508 | return -EINVAL; | |
509 | } | |
510 | ||
511 | if (stream->params.bps && | |
512 | stream->params.bps != stream_config->bps) { | |
513 | dev_err(dev, "bps not matching, stream:%s", stream->name); | |
514 | return -EINVAL; | |
515 | } | |
516 | ||
517 | stream->type = stream_config->type; | |
518 | stream->params.rate = stream_config->frame_rate; | |
519 | stream->params.bps = stream_config->bps; | |
520 | ||
521 | /* TODO: Update this check during Device-device support */ | |
522 | if (is_slave) | |
523 | stream->params.ch_count += stream_config->ch_count; | |
524 | ||
525 | return 0; | |
526 | } | |
527 | ||
bbe7379d SK |
528 | static int sdw_is_valid_port_range(struct device *dev, |
529 | struct sdw_port_runtime *p_rt) | |
530 | { | |
531 | if (!SDW_VALID_PORT_RANGE(p_rt->num)) { | |
532 | dev_err(dev, | |
533 | "SoundWire: Invalid port number :%d", p_rt->num); | |
534 | return -EINVAL; | |
535 | } | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | static struct sdw_port_runtime *sdw_port_alloc(struct device *dev, | |
541 | struct sdw_port_config *port_config, | |
542 | int port_index) | |
543 | { | |
544 | struct sdw_port_runtime *p_rt; | |
545 | ||
546 | p_rt = kzalloc(sizeof(*p_rt), GFP_KERNEL); | |
547 | if (!p_rt) | |
548 | return NULL; | |
549 | ||
550 | p_rt->ch_mask = port_config[port_index].ch_mask; | |
551 | p_rt->num = port_config[port_index].num; | |
552 | ||
553 | return p_rt; | |
554 | } | |
555 | ||
556 | static int sdw_master_port_config(struct sdw_bus *bus, | |
557 | struct sdw_master_runtime *m_rt, | |
558 | struct sdw_port_config *port_config, | |
559 | unsigned int num_ports) | |
560 | { | |
561 | struct sdw_port_runtime *p_rt; | |
562 | int i; | |
563 | ||
564 | /* Iterate for number of ports to perform initialization */ | |
565 | for (i = 0; i < num_ports; i++) { | |
566 | p_rt = sdw_port_alloc(bus->dev, port_config, i); | |
567 | if (!p_rt) | |
568 | return -ENOMEM; | |
569 | ||
570 | /* | |
571 | * TODO: Check port capabilities for requested | |
572 | * configuration (audio mode support) | |
573 | */ | |
574 | ||
575 | list_add_tail(&p_rt->port_node, &m_rt->port_list); | |
576 | } | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
581 | static int sdw_slave_port_config(struct sdw_slave *slave, | |
582 | struct sdw_slave_runtime *s_rt, | |
583 | struct sdw_port_config *port_config, | |
584 | unsigned int num_config) | |
585 | { | |
586 | struct sdw_port_runtime *p_rt; | |
587 | int i, ret; | |
588 | ||
589 | /* Iterate for number of ports to perform initialization */ | |
590 | for (i = 0; i < num_config; i++) { | |
591 | p_rt = sdw_port_alloc(&slave->dev, port_config, i); | |
592 | if (!p_rt) | |
593 | return -ENOMEM; | |
594 | ||
595 | /* | |
596 | * TODO: Check valid port range as defined by DisCo/ | |
597 | * slave | |
598 | */ | |
599 | ret = sdw_is_valid_port_range(&slave->dev, p_rt); | |
600 | if (ret < 0) { | |
601 | kfree(p_rt); | |
602 | return ret; | |
603 | } | |
604 | ||
605 | /* | |
606 | * TODO: Check port capabilities for requested | |
607 | * configuration (audio mode support) | |
608 | */ | |
609 | ||
610 | list_add_tail(&p_rt->port_node, &s_rt->port_list); | |
611 | } | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
89e59053 SK |
616 | /** |
617 | * sdw_stream_add_master() - Allocate and add master runtime to a stream | |
618 | * | |
619 | * @bus: SDW Bus instance | |
620 | * @stream_config: Stream configuration for audio stream | |
bbe7379d SK |
621 | * @port_config: Port configuration for audio stream |
622 | * @num_ports: Number of ports | |
89e59053 SK |
623 | * @stream: SoundWire stream |
624 | */ | |
625 | int sdw_stream_add_master(struct sdw_bus *bus, | |
626 | struct sdw_stream_config *stream_config, | |
bbe7379d SK |
627 | struct sdw_port_config *port_config, |
628 | unsigned int num_ports, | |
89e59053 SK |
629 | struct sdw_stream_runtime *stream) |
630 | { | |
631 | struct sdw_master_runtime *m_rt = NULL; | |
632 | int ret; | |
633 | ||
634 | mutex_lock(&bus->bus_lock); | |
635 | ||
636 | m_rt = sdw_alloc_master_rt(bus, stream_config, stream); | |
637 | if (!m_rt) { | |
638 | dev_err(bus->dev, | |
639 | "Master runtime config failed for stream:%s", | |
640 | stream->name); | |
641 | ret = -ENOMEM; | |
642 | goto error; | |
643 | } | |
644 | ||
645 | ret = sdw_config_stream(bus->dev, stream, stream_config, false); | |
646 | if (ret) | |
647 | goto stream_error; | |
648 | ||
bbe7379d SK |
649 | ret = sdw_master_port_config(bus, m_rt, port_config, num_ports); |
650 | if (ret) | |
651 | goto stream_error; | |
652 | ||
89e59053 SK |
653 | stream->state = SDW_STREAM_CONFIGURED; |
654 | ||
655 | stream_error: | |
656 | sdw_release_master_stream(stream); | |
657 | error: | |
658 | mutex_unlock(&bus->bus_lock); | |
659 | return ret; | |
660 | } | |
661 | EXPORT_SYMBOL(sdw_stream_add_master); | |
662 | ||
663 | /** | |
664 | * sdw_stream_add_slave() - Allocate and add master/slave runtime to a stream | |
665 | * | |
666 | * @slave: SDW Slave instance | |
667 | * @stream_config: Stream configuration for audio stream | |
668 | * @stream: SoundWire stream | |
bbe7379d SK |
669 | * @port_config: Port configuration for audio stream |
670 | * @num_ports: Number of ports | |
89e59053 SK |
671 | */ |
672 | int sdw_stream_add_slave(struct sdw_slave *slave, | |
673 | struct sdw_stream_config *stream_config, | |
bbe7379d SK |
674 | struct sdw_port_config *port_config, |
675 | unsigned int num_ports, | |
89e59053 SK |
676 | struct sdw_stream_runtime *stream) |
677 | { | |
678 | struct sdw_slave_runtime *s_rt; | |
679 | struct sdw_master_runtime *m_rt; | |
680 | int ret; | |
681 | ||
682 | mutex_lock(&slave->bus->bus_lock); | |
683 | ||
684 | /* | |
685 | * If this API is invoked by Slave first then m_rt is not valid. | |
686 | * So, allocate m_rt and add Slave to it. | |
687 | */ | |
688 | m_rt = sdw_alloc_master_rt(slave->bus, stream_config, stream); | |
689 | if (!m_rt) { | |
690 | dev_err(&slave->dev, | |
691 | "alloc master runtime failed for stream:%s", | |
692 | stream->name); | |
693 | ret = -ENOMEM; | |
694 | goto error; | |
695 | } | |
696 | ||
697 | s_rt = sdw_alloc_slave_rt(slave, stream_config, stream); | |
698 | if (!s_rt) { | |
699 | dev_err(&slave->dev, | |
700 | "Slave runtime config failed for stream:%s", | |
701 | stream->name); | |
702 | ret = -ENOMEM; | |
703 | goto stream_error; | |
704 | } | |
705 | ||
706 | ret = sdw_config_stream(&slave->dev, stream, stream_config, true); | |
707 | if (ret) | |
708 | goto stream_error; | |
709 | ||
710 | list_add_tail(&s_rt->m_rt_node, &m_rt->slave_rt_list); | |
711 | ||
bbe7379d SK |
712 | ret = sdw_slave_port_config(slave, s_rt, port_config, num_ports); |
713 | if (ret) | |
714 | goto stream_error; | |
715 | ||
89e59053 SK |
716 | stream->state = SDW_STREAM_CONFIGURED; |
717 | goto error; | |
718 | ||
719 | stream_error: | |
720 | /* | |
721 | * we hit error so cleanup the stream, release all Slave(s) and | |
722 | * Master runtime | |
723 | */ | |
724 | sdw_release_master_stream(stream); | |
725 | error: | |
726 | mutex_unlock(&slave->bus->bus_lock); | |
727 | return ret; | |
728 | } | |
729 | EXPORT_SYMBOL(sdw_stream_add_slave); | |
f8101c74 SK |
730 | |
731 | /** | |
732 | * sdw_get_slave_dpn_prop() - Get Slave port capabilities | |
733 | * | |
734 | * @slave: Slave handle | |
735 | * @direction: Data direction. | |
736 | * @port_num: Port number | |
737 | */ | |
738 | struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave, | |
739 | enum sdw_data_direction direction, | |
740 | unsigned int port_num) | |
741 | { | |
742 | struct sdw_dpn_prop *dpn_prop; | |
743 | u8 num_ports; | |
744 | int i; | |
745 | ||
746 | if (direction == SDW_DATA_DIR_TX) { | |
747 | num_ports = hweight32(slave->prop.source_ports); | |
748 | dpn_prop = slave->prop.src_dpn_prop; | |
749 | } else { | |
750 | num_ports = hweight32(slave->prop.sink_ports); | |
751 | dpn_prop = slave->prop.sink_dpn_prop; | |
752 | } | |
753 | ||
754 | for (i = 0; i < num_ports; i++) { | |
755 | dpn_prop = &dpn_prop[i]; | |
756 | ||
757 | if (dpn_prop->num == port_num) | |
758 | return &dpn_prop[i]; | |
759 | } | |
760 | ||
761 | return NULL; | |
762 | } |