xref: /openbmc/linux/sound/firewire/bebob/bebob_pcm.c (revision e6dcc92f)
1da607e19SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2fbbebd2cSTakashi Sakamoto /*
3fbbebd2cSTakashi Sakamoto  * bebob_pcm.c - a part of driver for BeBoB based devices
4fbbebd2cSTakashi Sakamoto  *
5fbbebd2cSTakashi Sakamoto  * Copyright (c) 2013-2014 Takashi Sakamoto
6fbbebd2cSTakashi Sakamoto  */
7fbbebd2cSTakashi Sakamoto 
8fbbebd2cSTakashi Sakamoto #include "./bebob.h"
9fbbebd2cSTakashi Sakamoto 
10fbbebd2cSTakashi Sakamoto static int
11fbbebd2cSTakashi Sakamoto hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
12fbbebd2cSTakashi Sakamoto {
13fbbebd2cSTakashi Sakamoto 	struct snd_bebob_stream_formation *formations = rule->private;
14fbbebd2cSTakashi Sakamoto 	struct snd_interval *r =
15fbbebd2cSTakashi Sakamoto 		hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
16fbbebd2cSTakashi Sakamoto 	const struct snd_interval *c =
17fbbebd2cSTakashi Sakamoto 		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
18fbbebd2cSTakashi Sakamoto 	struct snd_interval t = {
19fbbebd2cSTakashi Sakamoto 		.min = UINT_MAX, .max = 0, .integer = 1
20fbbebd2cSTakashi Sakamoto 	};
21fbbebd2cSTakashi Sakamoto 	unsigned int i;
22fbbebd2cSTakashi Sakamoto 
23fbbebd2cSTakashi Sakamoto 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
24fbbebd2cSTakashi Sakamoto 		/* entry is invalid */
25fbbebd2cSTakashi Sakamoto 		if (formations[i].pcm == 0)
26fbbebd2cSTakashi Sakamoto 			continue;
27fbbebd2cSTakashi Sakamoto 
28fbbebd2cSTakashi Sakamoto 		if (!snd_interval_test(c, formations[i].pcm))
29fbbebd2cSTakashi Sakamoto 			continue;
30fbbebd2cSTakashi Sakamoto 
31fbbebd2cSTakashi Sakamoto 		t.min = min(t.min, snd_bebob_rate_table[i]);
32fbbebd2cSTakashi Sakamoto 		t.max = max(t.max, snd_bebob_rate_table[i]);
33fbbebd2cSTakashi Sakamoto 
34fbbebd2cSTakashi Sakamoto 	}
35fbbebd2cSTakashi Sakamoto 	return snd_interval_refine(r, &t);
36fbbebd2cSTakashi Sakamoto }
37fbbebd2cSTakashi Sakamoto 
38fbbebd2cSTakashi Sakamoto static int
39fbbebd2cSTakashi Sakamoto hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
40fbbebd2cSTakashi Sakamoto {
41fbbebd2cSTakashi Sakamoto 	struct snd_bebob_stream_formation *formations = rule->private;
42fbbebd2cSTakashi Sakamoto 	struct snd_interval *c =
43fbbebd2cSTakashi Sakamoto 		hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
44fbbebd2cSTakashi Sakamoto 	const struct snd_interval *r =
45fbbebd2cSTakashi Sakamoto 		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
46fbbebd2cSTakashi Sakamoto 	struct snd_interval t = {
47fbbebd2cSTakashi Sakamoto 		.min = UINT_MAX, .max = 0, .integer = 1
48fbbebd2cSTakashi Sakamoto 	};
49fbbebd2cSTakashi Sakamoto 
50fbbebd2cSTakashi Sakamoto 	unsigned int i;
51fbbebd2cSTakashi Sakamoto 
52fbbebd2cSTakashi Sakamoto 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
53fbbebd2cSTakashi Sakamoto 		/* entry is invalid */
54fbbebd2cSTakashi Sakamoto 		if (formations[i].pcm == 0)
55fbbebd2cSTakashi Sakamoto 			continue;
56fbbebd2cSTakashi Sakamoto 
57fbbebd2cSTakashi Sakamoto 		if (!snd_interval_test(r, snd_bebob_rate_table[i]))
58fbbebd2cSTakashi Sakamoto 			continue;
59fbbebd2cSTakashi Sakamoto 
60fbbebd2cSTakashi Sakamoto 		t.min = min(t.min, formations[i].pcm);
61fbbebd2cSTakashi Sakamoto 		t.max = max(t.max, formations[i].pcm);
62fbbebd2cSTakashi Sakamoto 	}
63fbbebd2cSTakashi Sakamoto 
64fbbebd2cSTakashi Sakamoto 	return snd_interval_refine(c, &t);
65fbbebd2cSTakashi Sakamoto }
66fbbebd2cSTakashi Sakamoto 
67fbbebd2cSTakashi Sakamoto static void
68fbbebd2cSTakashi Sakamoto limit_channels_and_rates(struct snd_pcm_hardware *hw,
69fbbebd2cSTakashi Sakamoto 			 struct snd_bebob_stream_formation *formations)
70fbbebd2cSTakashi Sakamoto {
71fbbebd2cSTakashi Sakamoto 	unsigned int i;
72fbbebd2cSTakashi Sakamoto 
73fbbebd2cSTakashi Sakamoto 	hw->channels_min = UINT_MAX;
74fbbebd2cSTakashi Sakamoto 	hw->channels_max = 0;
75fbbebd2cSTakashi Sakamoto 
76fbbebd2cSTakashi Sakamoto 	hw->rate_min = UINT_MAX;
77fbbebd2cSTakashi Sakamoto 	hw->rate_max = 0;
78fbbebd2cSTakashi Sakamoto 	hw->rates = 0;
79fbbebd2cSTakashi Sakamoto 
80fbbebd2cSTakashi Sakamoto 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
81fbbebd2cSTakashi Sakamoto 		/* entry has no PCM channels */
82fbbebd2cSTakashi Sakamoto 		if (formations[i].pcm == 0)
83fbbebd2cSTakashi Sakamoto 			continue;
84fbbebd2cSTakashi Sakamoto 
85fbbebd2cSTakashi Sakamoto 		hw->channels_min = min(hw->channels_min, formations[i].pcm);
86fbbebd2cSTakashi Sakamoto 		hw->channels_max = max(hw->channels_max, formations[i].pcm);
87fbbebd2cSTakashi Sakamoto 
88fbbebd2cSTakashi Sakamoto 		hw->rate_min = min(hw->rate_min, snd_bebob_rate_table[i]);
89fbbebd2cSTakashi Sakamoto 		hw->rate_max = max(hw->rate_max, snd_bebob_rate_table[i]);
90fbbebd2cSTakashi Sakamoto 		hw->rates |= snd_pcm_rate_to_rate_bit(snd_bebob_rate_table[i]);
91fbbebd2cSTakashi Sakamoto 	}
92fbbebd2cSTakashi Sakamoto }
93fbbebd2cSTakashi Sakamoto 
94fbbebd2cSTakashi Sakamoto static int
95fbbebd2cSTakashi Sakamoto pcm_init_hw_params(struct snd_bebob *bebob,
96fbbebd2cSTakashi Sakamoto 		   struct snd_pcm_substream *substream)
97fbbebd2cSTakashi Sakamoto {
98fbbebd2cSTakashi Sakamoto 	struct snd_pcm_runtime *runtime = substream->runtime;
99fbbebd2cSTakashi Sakamoto 	struct amdtp_stream *s;
100fbbebd2cSTakashi Sakamoto 	struct snd_bebob_stream_formation *formations;
101fbbebd2cSTakashi Sakamoto 	int err;
102fbbebd2cSTakashi Sakamoto 
103fbbebd2cSTakashi Sakamoto 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
10449c7b3fcSTakashi Sakamoto 		runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
105fbbebd2cSTakashi Sakamoto 		s = &bebob->tx_stream;
106fbbebd2cSTakashi Sakamoto 		formations = bebob->tx_stream_formations;
107fbbebd2cSTakashi Sakamoto 	} else {
10849c7b3fcSTakashi Sakamoto 		runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
109fbbebd2cSTakashi Sakamoto 		s = &bebob->rx_stream;
110fbbebd2cSTakashi Sakamoto 		formations = bebob->rx_stream_formations;
111fbbebd2cSTakashi Sakamoto 	}
112fbbebd2cSTakashi Sakamoto 
113fbbebd2cSTakashi Sakamoto 	limit_channels_and_rates(&runtime->hw, formations);
114fbbebd2cSTakashi Sakamoto 
115fbbebd2cSTakashi Sakamoto 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
116fbbebd2cSTakashi Sakamoto 				  hw_rule_channels, formations,
117fbbebd2cSTakashi Sakamoto 				  SNDRV_PCM_HW_PARAM_RATE, -1);
118fbbebd2cSTakashi Sakamoto 	if (err < 0)
119fbbebd2cSTakashi Sakamoto 		goto end;
120fbbebd2cSTakashi Sakamoto 
121fbbebd2cSTakashi Sakamoto 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
122fbbebd2cSTakashi Sakamoto 				  hw_rule_rate, formations,
123fbbebd2cSTakashi Sakamoto 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
124fbbebd2cSTakashi Sakamoto 	if (err < 0)
125fbbebd2cSTakashi Sakamoto 		goto end;
126fbbebd2cSTakashi Sakamoto 
127bc8500daSTakashi Sakamoto 	err = amdtp_am824_add_pcm_hw_constraints(s, runtime);
128fbbebd2cSTakashi Sakamoto end:
129fbbebd2cSTakashi Sakamoto 	return err;
130fbbebd2cSTakashi Sakamoto }
131fbbebd2cSTakashi Sakamoto 
132a80b29a4STakashi Sakamoto static int pcm_open(struct snd_pcm_substream *substream)
133fbbebd2cSTakashi Sakamoto {
134fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
1356b9866c8SJulia Lawall 	const struct snd_bebob_rate_spec *spec = bebob->spec->rate;
136a80b29a4STakashi Sakamoto 	struct amdtp_domain *d = &bebob->domain;
1373e254b16STakashi Sakamoto 	enum snd_bebob_clock_type src;
138fbbebd2cSTakashi Sakamoto 	int err;
139fbbebd2cSTakashi Sakamoto 
140618eabeaSTakashi Sakamoto 	err = snd_bebob_stream_lock_try(bebob);
141fbbebd2cSTakashi Sakamoto 	if (err < 0)
142a80b29a4STakashi Sakamoto 		return err;
143fbbebd2cSTakashi Sakamoto 
144618eabeaSTakashi Sakamoto 	err = pcm_init_hw_params(bebob, substream);
145618eabeaSTakashi Sakamoto 	if (err < 0)
146618eabeaSTakashi Sakamoto 		goto err_locked;
147618eabeaSTakashi Sakamoto 
1483e254b16STakashi Sakamoto 	err = snd_bebob_stream_get_clock_src(bebob, &src);
149fbbebd2cSTakashi Sakamoto 	if (err < 0)
150618eabeaSTakashi Sakamoto 		goto err_locked;
151fbbebd2cSTakashi Sakamoto 
152a80b29a4STakashi Sakamoto 	mutex_lock(&bebob->mutex);
153a80b29a4STakashi Sakamoto 
154a80b29a4STakashi Sakamoto 	// When source of clock is not internal or any stream is reserved for
155a80b29a4STakashi Sakamoto 	// transmission of PCM frames, the available sampling rate is limited
156a80b29a4STakashi Sakamoto 	// at current one.
1573e254b16STakashi Sakamoto 	if (src == SND_BEBOB_CLOCK_TYPE_EXTERNAL ||
158a80b29a4STakashi Sakamoto 	    (bebob->substreams_counter > 0 && d->events_per_period > 0)) {
159a80b29a4STakashi Sakamoto 		unsigned int frames_per_period = d->events_per_period;
1601fde7a44STakashi Sakamoto 		unsigned int frames_per_buffer = d->events_per_buffer;
161a80b29a4STakashi Sakamoto 		unsigned int sampling_rate;
162a80b29a4STakashi Sakamoto 
1631fc9522aSTakashi Sakamoto 		err = spec->get(bebob, &sampling_rate);
164fbbebd2cSTakashi Sakamoto 		if (err < 0) {
165a80b29a4STakashi Sakamoto 			mutex_unlock(&bebob->mutex);
166fbbebd2cSTakashi Sakamoto 			dev_err(&bebob->unit->device,
167fbbebd2cSTakashi Sakamoto 				"fail to get sampling rate: %d\n", err);
168618eabeaSTakashi Sakamoto 			goto err_locked;
169fbbebd2cSTakashi Sakamoto 		}
170fbbebd2cSTakashi Sakamoto 
171fbbebd2cSTakashi Sakamoto 		substream->runtime->hw.rate_min = sampling_rate;
172fbbebd2cSTakashi Sakamoto 		substream->runtime->hw.rate_max = sampling_rate;
173a80b29a4STakashi Sakamoto 
174a80b29a4STakashi Sakamoto 		if (frames_per_period > 0) {
175a80b29a4STakashi Sakamoto 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
176a80b29a4STakashi Sakamoto 					SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
177a80b29a4STakashi Sakamoto 					frames_per_period, frames_per_period);
178a80b29a4STakashi Sakamoto 			if (err < 0) {
179a80b29a4STakashi Sakamoto 				mutex_unlock(&bebob->mutex);
180a80b29a4STakashi Sakamoto 				goto err_locked;
181a80b29a4STakashi Sakamoto 			}
1821fde7a44STakashi Sakamoto 
1831fde7a44STakashi Sakamoto 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
1841fde7a44STakashi Sakamoto 					SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
1851fde7a44STakashi Sakamoto 					frames_per_buffer, frames_per_buffer);
1861fde7a44STakashi Sakamoto 			if (err < 0) {
1871fde7a44STakashi Sakamoto 				mutex_unlock(&bebob->mutex);
1881fde7a44STakashi Sakamoto 				goto err_locked;
1891fde7a44STakashi Sakamoto 			}
190a80b29a4STakashi Sakamoto 		}
191fbbebd2cSTakashi Sakamoto 	}
192fbbebd2cSTakashi Sakamoto 
193a80b29a4STakashi Sakamoto 	mutex_unlock(&bebob->mutex);
194a80b29a4STakashi Sakamoto 
195fbbebd2cSTakashi Sakamoto 	snd_pcm_set_sync(substream);
196a80b29a4STakashi Sakamoto 
197a80b29a4STakashi Sakamoto 	return 0;
198618eabeaSTakashi Sakamoto err_locked:
199618eabeaSTakashi Sakamoto 	snd_bebob_stream_lock_release(bebob);
200618eabeaSTakashi Sakamoto 	return err;
201fbbebd2cSTakashi Sakamoto }
202fbbebd2cSTakashi Sakamoto 
203fbbebd2cSTakashi Sakamoto static int
204fbbebd2cSTakashi Sakamoto pcm_close(struct snd_pcm_substream *substream)
205fbbebd2cSTakashi Sakamoto {
206618eabeaSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
207618eabeaSTakashi Sakamoto 	snd_bebob_stream_lock_release(bebob);
208fbbebd2cSTakashi Sakamoto 	return 0;
209fbbebd2cSTakashi Sakamoto }
210fbbebd2cSTakashi Sakamoto 
211f69fc179STakashi Sakamoto static int pcm_hw_params(struct snd_pcm_substream *substream,
212fbbebd2cSTakashi Sakamoto 			 struct snd_pcm_hw_params *hw_params)
213fbbebd2cSTakashi Sakamoto {
214fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
21522c103cdSTakashi Sakamoto 	int err;
21622c103cdSTakashi Sakamoto 
21722c103cdSTakashi Sakamoto 	err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
21822c103cdSTakashi Sakamoto 					       params_buffer_bytes(hw_params));
21922c103cdSTakashi Sakamoto 	if (err < 0)
22022c103cdSTakashi Sakamoto 		return err;
221fbbebd2cSTakashi Sakamoto 
2222a71e701STakashi Sakamoto 	if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
223ac2888b9STakashi Sakamoto 		unsigned int rate = params_rate(hw_params);
2248737209fSTakashi Sakamoto 		unsigned int frames_per_period = params_period_size(hw_params);
2251fde7a44STakashi Sakamoto 		unsigned int frames_per_buffer = params_buffer_size(hw_params);
226ac2888b9STakashi Sakamoto 
2272a71e701STakashi Sakamoto 		mutex_lock(&bebob->mutex);
2288737209fSTakashi Sakamoto 		err = snd_bebob_stream_reserve_duplex(bebob, rate,
2291fde7a44STakashi Sakamoto 					frames_per_period, frames_per_buffer);
230ac2888b9STakashi Sakamoto 		if (err >= 0)
231ac2888b9STakashi Sakamoto 			++bebob->substreams_counter;
2322a71e701STakashi Sakamoto 		mutex_unlock(&bebob->mutex);
2332a71e701STakashi Sakamoto 	}
23485130cb4STakashi Sakamoto 
235ac2888b9STakashi Sakamoto 	return err;
236fbbebd2cSTakashi Sakamoto }
237fbbebd2cSTakashi Sakamoto 
238f69fc179STakashi Sakamoto static int pcm_hw_free(struct snd_pcm_substream *substream)
239fbbebd2cSTakashi Sakamoto {
240fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
241fbbebd2cSTakashi Sakamoto 
2422a71e701STakashi Sakamoto 	mutex_lock(&bebob->mutex);
2435e818ac2STakashi Sakamoto 
2445e818ac2STakashi Sakamoto 	if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
2454fd6c6c7STakashi Sakamoto 		bebob->substreams_counter--;
246fbbebd2cSTakashi Sakamoto 
247fbbebd2cSTakashi Sakamoto 	snd_bebob_stream_stop_duplex(bebob);
248fbbebd2cSTakashi Sakamoto 
2495e818ac2STakashi Sakamoto 	mutex_unlock(&bebob->mutex);
2505e818ac2STakashi Sakamoto 
251fbbebd2cSTakashi Sakamoto 	return snd_pcm_lib_free_vmalloc_buffer(substream);
252fbbebd2cSTakashi Sakamoto }
253fbbebd2cSTakashi Sakamoto 
254fbbebd2cSTakashi Sakamoto static int
255fbbebd2cSTakashi Sakamoto pcm_capture_prepare(struct snd_pcm_substream *substream)
256fbbebd2cSTakashi Sakamoto {
257fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
258fbbebd2cSTakashi Sakamoto 	int err;
259fbbebd2cSTakashi Sakamoto 
260ac2888b9STakashi Sakamoto 	err = snd_bebob_stream_start_duplex(bebob);
261fbbebd2cSTakashi Sakamoto 	if (err >= 0)
262fbbebd2cSTakashi Sakamoto 		amdtp_stream_pcm_prepare(&bebob->tx_stream);
263fbbebd2cSTakashi Sakamoto 
264fbbebd2cSTakashi Sakamoto 	return err;
265fbbebd2cSTakashi Sakamoto }
266fbbebd2cSTakashi Sakamoto static int
267fbbebd2cSTakashi Sakamoto pcm_playback_prepare(struct snd_pcm_substream *substream)
268fbbebd2cSTakashi Sakamoto {
269fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
270fbbebd2cSTakashi Sakamoto 	int err;
271fbbebd2cSTakashi Sakamoto 
272ac2888b9STakashi Sakamoto 	err = snd_bebob_stream_start_duplex(bebob);
273fbbebd2cSTakashi Sakamoto 	if (err >= 0)
274fbbebd2cSTakashi Sakamoto 		amdtp_stream_pcm_prepare(&bebob->rx_stream);
275fbbebd2cSTakashi Sakamoto 
276fbbebd2cSTakashi Sakamoto 	return err;
277fbbebd2cSTakashi Sakamoto }
278fbbebd2cSTakashi Sakamoto 
279fbbebd2cSTakashi Sakamoto static int
280fbbebd2cSTakashi Sakamoto pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
281fbbebd2cSTakashi Sakamoto {
282fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
283fbbebd2cSTakashi Sakamoto 
284fbbebd2cSTakashi Sakamoto 	switch (cmd) {
285fbbebd2cSTakashi Sakamoto 	case SNDRV_PCM_TRIGGER_START:
286fbbebd2cSTakashi Sakamoto 		amdtp_stream_pcm_trigger(&bebob->tx_stream, substream);
287fbbebd2cSTakashi Sakamoto 		break;
288fbbebd2cSTakashi Sakamoto 	case SNDRV_PCM_TRIGGER_STOP:
289fbbebd2cSTakashi Sakamoto 		amdtp_stream_pcm_trigger(&bebob->tx_stream, NULL);
290fbbebd2cSTakashi Sakamoto 		break;
291fbbebd2cSTakashi Sakamoto 	default:
292fbbebd2cSTakashi Sakamoto 		return -EINVAL;
293fbbebd2cSTakashi Sakamoto 	}
294fbbebd2cSTakashi Sakamoto 
295fbbebd2cSTakashi Sakamoto 	return 0;
296fbbebd2cSTakashi Sakamoto }
297fbbebd2cSTakashi Sakamoto static int
298fbbebd2cSTakashi Sakamoto pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
299fbbebd2cSTakashi Sakamoto {
300fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
301fbbebd2cSTakashi Sakamoto 
302fbbebd2cSTakashi Sakamoto 	switch (cmd) {
303fbbebd2cSTakashi Sakamoto 	case SNDRV_PCM_TRIGGER_START:
304fbbebd2cSTakashi Sakamoto 		amdtp_stream_pcm_trigger(&bebob->rx_stream, substream);
305fbbebd2cSTakashi Sakamoto 		break;
306fbbebd2cSTakashi Sakamoto 	case SNDRV_PCM_TRIGGER_STOP:
307fbbebd2cSTakashi Sakamoto 		amdtp_stream_pcm_trigger(&bebob->rx_stream, NULL);
308fbbebd2cSTakashi Sakamoto 		break;
309fbbebd2cSTakashi Sakamoto 	default:
310fbbebd2cSTakashi Sakamoto 		return -EINVAL;
311fbbebd2cSTakashi Sakamoto 	}
312fbbebd2cSTakashi Sakamoto 
313fbbebd2cSTakashi Sakamoto 	return 0;
314fbbebd2cSTakashi Sakamoto }
315fbbebd2cSTakashi Sakamoto 
316f890f9a0STakashi Sakamoto static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
317fbbebd2cSTakashi Sakamoto {
318fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = sbstrm->private_data;
319f890f9a0STakashi Sakamoto 
320f890f9a0STakashi Sakamoto 	return amdtp_domain_stream_pcm_pointer(&bebob->domain,
321f890f9a0STakashi Sakamoto 					       &bebob->tx_stream);
322fbbebd2cSTakashi Sakamoto }
323f890f9a0STakashi Sakamoto static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
324fbbebd2cSTakashi Sakamoto {
325fbbebd2cSTakashi Sakamoto 	struct snd_bebob *bebob = sbstrm->private_data;
326f890f9a0STakashi Sakamoto 
327f890f9a0STakashi Sakamoto 	return amdtp_domain_stream_pcm_pointer(&bebob->domain,
328f890f9a0STakashi Sakamoto 					       &bebob->rx_stream);
329fbbebd2cSTakashi Sakamoto }
330fbbebd2cSTakashi Sakamoto 
331875becf8STakashi Sakamoto static int pcm_capture_ack(struct snd_pcm_substream *substream)
332875becf8STakashi Sakamoto {
333875becf8STakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
334875becf8STakashi Sakamoto 
335e6dcc92fSTakashi Sakamoto 	return amdtp_domain_stream_pcm_ack(&bebob->domain, &bebob->tx_stream);
336875becf8STakashi Sakamoto }
337875becf8STakashi Sakamoto 
338875becf8STakashi Sakamoto static int pcm_playback_ack(struct snd_pcm_substream *substream)
339875becf8STakashi Sakamoto {
340875becf8STakashi Sakamoto 	struct snd_bebob *bebob = substream->private_data;
341875becf8STakashi Sakamoto 
342e6dcc92fSTakashi Sakamoto 	return amdtp_domain_stream_pcm_ack(&bebob->domain, &bebob->rx_stream);
343875becf8STakashi Sakamoto }
344875becf8STakashi Sakamoto 
3454780f774STakashi Sakamoto int snd_bebob_create_pcm_devices(struct snd_bebob *bebob)
3464780f774STakashi Sakamoto {
3474780f774STakashi Sakamoto 	static const struct snd_pcm_ops capture_ops = {
348fbbebd2cSTakashi Sakamoto 		.open		= pcm_open,
349fbbebd2cSTakashi Sakamoto 		.close		= pcm_close,
350fbbebd2cSTakashi Sakamoto 		.ioctl		= snd_pcm_lib_ioctl,
351f69fc179STakashi Sakamoto 		.hw_params	= pcm_hw_params,
352f69fc179STakashi Sakamoto 		.hw_free	= pcm_hw_free,
353fbbebd2cSTakashi Sakamoto 		.prepare	= pcm_capture_prepare,
354fbbebd2cSTakashi Sakamoto 		.trigger	= pcm_capture_trigger,
355fbbebd2cSTakashi Sakamoto 		.pointer	= pcm_capture_pointer,
356875becf8STakashi Sakamoto 		.ack		= pcm_capture_ack,
357fbbebd2cSTakashi Sakamoto 		.page		= snd_pcm_lib_get_vmalloc_page,
358fbbebd2cSTakashi Sakamoto 	};
3594780f774STakashi Sakamoto 	static const struct snd_pcm_ops playback_ops = {
360fbbebd2cSTakashi Sakamoto 		.open		= pcm_open,
361fbbebd2cSTakashi Sakamoto 		.close		= pcm_close,
362fbbebd2cSTakashi Sakamoto 		.ioctl		= snd_pcm_lib_ioctl,
363f69fc179STakashi Sakamoto 		.hw_params	= pcm_hw_params,
364f69fc179STakashi Sakamoto 		.hw_free	= pcm_hw_free,
365fbbebd2cSTakashi Sakamoto 		.prepare	= pcm_playback_prepare,
366fbbebd2cSTakashi Sakamoto 		.trigger	= pcm_playback_trigger,
367fbbebd2cSTakashi Sakamoto 		.pointer	= pcm_playback_pointer,
368875becf8STakashi Sakamoto 		.ack		= pcm_playback_ack,
369fbbebd2cSTakashi Sakamoto 		.page		= snd_pcm_lib_get_vmalloc_page,
370fbbebd2cSTakashi Sakamoto 	};
371fbbebd2cSTakashi Sakamoto 	struct snd_pcm *pcm;
372fbbebd2cSTakashi Sakamoto 	int err;
373fbbebd2cSTakashi Sakamoto 
374fbbebd2cSTakashi Sakamoto 	err = snd_pcm_new(bebob->card, bebob->card->driver, 0, 1, 1, &pcm);
375fbbebd2cSTakashi Sakamoto 	if (err < 0)
376fbbebd2cSTakashi Sakamoto 		goto end;
377fbbebd2cSTakashi Sakamoto 
378fbbebd2cSTakashi Sakamoto 	pcm->private_data = bebob;
379fbbebd2cSTakashi Sakamoto 	snprintf(pcm->name, sizeof(pcm->name),
380fbbebd2cSTakashi Sakamoto 		 "%s PCM", bebob->card->shortname);
3814780f774STakashi Sakamoto 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
3824780f774STakashi Sakamoto 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
383fbbebd2cSTakashi Sakamoto end:
384fbbebd2cSTakashi Sakamoto 	return err;
385fbbebd2cSTakashi Sakamoto }
386