1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * bebob_midi.c - a part of driver for BeBoB based devices
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 2013-2014 Takashi Sakamoto
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include "bebob.h"
9*4882a593Smuzhiyun
midi_open(struct snd_rawmidi_substream * substream)10*4882a593Smuzhiyun static int midi_open(struct snd_rawmidi_substream *substream)
11*4882a593Smuzhiyun {
12*4882a593Smuzhiyun struct snd_bebob *bebob = substream->rmidi->private_data;
13*4882a593Smuzhiyun int err;
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun err = snd_bebob_stream_lock_try(bebob);
16*4882a593Smuzhiyun if (err < 0)
17*4882a593Smuzhiyun return err;
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun mutex_lock(&bebob->mutex);
20*4882a593Smuzhiyun err = snd_bebob_stream_reserve_duplex(bebob, 0, 0, 0);
21*4882a593Smuzhiyun if (err >= 0) {
22*4882a593Smuzhiyun ++bebob->substreams_counter;
23*4882a593Smuzhiyun err = snd_bebob_stream_start_duplex(bebob);
24*4882a593Smuzhiyun if (err < 0)
25*4882a593Smuzhiyun --bebob->substreams_counter;
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun mutex_unlock(&bebob->mutex);
28*4882a593Smuzhiyun if (err < 0)
29*4882a593Smuzhiyun snd_bebob_stream_lock_release(bebob);
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun return err;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
midi_close(struct snd_rawmidi_substream * substream)34*4882a593Smuzhiyun static int midi_close(struct snd_rawmidi_substream *substream)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun struct snd_bebob *bebob = substream->rmidi->private_data;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun mutex_lock(&bebob->mutex);
39*4882a593Smuzhiyun bebob->substreams_counter--;
40*4882a593Smuzhiyun snd_bebob_stream_stop_duplex(bebob);
41*4882a593Smuzhiyun mutex_unlock(&bebob->mutex);
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun snd_bebob_stream_lock_release(bebob);
44*4882a593Smuzhiyun return 0;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
midi_capture_trigger(struct snd_rawmidi_substream * substrm,int up)47*4882a593Smuzhiyun static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun struct snd_bebob *bebob = substrm->rmidi->private_data;
50*4882a593Smuzhiyun unsigned long flags;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun spin_lock_irqsave(&bebob->lock, flags);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun if (up)
55*4882a593Smuzhiyun amdtp_am824_midi_trigger(&bebob->tx_stream,
56*4882a593Smuzhiyun substrm->number, substrm);
57*4882a593Smuzhiyun else
58*4882a593Smuzhiyun amdtp_am824_midi_trigger(&bebob->tx_stream,
59*4882a593Smuzhiyun substrm->number, NULL);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun spin_unlock_irqrestore(&bebob->lock, flags);
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
midi_playback_trigger(struct snd_rawmidi_substream * substrm,int up)64*4882a593Smuzhiyun static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
65*4882a593Smuzhiyun {
66*4882a593Smuzhiyun struct snd_bebob *bebob = substrm->rmidi->private_data;
67*4882a593Smuzhiyun unsigned long flags;
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun spin_lock_irqsave(&bebob->lock, flags);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun if (up)
72*4882a593Smuzhiyun amdtp_am824_midi_trigger(&bebob->rx_stream,
73*4882a593Smuzhiyun substrm->number, substrm);
74*4882a593Smuzhiyun else
75*4882a593Smuzhiyun amdtp_am824_midi_trigger(&bebob->rx_stream,
76*4882a593Smuzhiyun substrm->number, NULL);
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun spin_unlock_irqrestore(&bebob->lock, flags);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
set_midi_substream_names(struct snd_bebob * bebob,struct snd_rawmidi_str * str)81*4882a593Smuzhiyun static void set_midi_substream_names(struct snd_bebob *bebob,
82*4882a593Smuzhiyun struct snd_rawmidi_str *str)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun struct snd_rawmidi_substream *subs;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun list_for_each_entry(subs, &str->substreams, list) {
87*4882a593Smuzhiyun snprintf(subs->name, sizeof(subs->name),
88*4882a593Smuzhiyun "%s MIDI %d",
89*4882a593Smuzhiyun bebob->card->shortname, subs->number + 1);
90*4882a593Smuzhiyun }
91*4882a593Smuzhiyun }
92*4882a593Smuzhiyun
snd_bebob_create_midi_devices(struct snd_bebob * bebob)93*4882a593Smuzhiyun int snd_bebob_create_midi_devices(struct snd_bebob *bebob)
94*4882a593Smuzhiyun {
95*4882a593Smuzhiyun static const struct snd_rawmidi_ops capture_ops = {
96*4882a593Smuzhiyun .open = midi_open,
97*4882a593Smuzhiyun .close = midi_close,
98*4882a593Smuzhiyun .trigger = midi_capture_trigger,
99*4882a593Smuzhiyun };
100*4882a593Smuzhiyun static const struct snd_rawmidi_ops playback_ops = {
101*4882a593Smuzhiyun .open = midi_open,
102*4882a593Smuzhiyun .close = midi_close,
103*4882a593Smuzhiyun .trigger = midi_playback_trigger,
104*4882a593Smuzhiyun };
105*4882a593Smuzhiyun struct snd_rawmidi *rmidi;
106*4882a593Smuzhiyun struct snd_rawmidi_str *str;
107*4882a593Smuzhiyun int err;
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun /* create midi ports */
110*4882a593Smuzhiyun err = snd_rawmidi_new(bebob->card, bebob->card->driver, 0,
111*4882a593Smuzhiyun bebob->midi_output_ports, bebob->midi_input_ports,
112*4882a593Smuzhiyun &rmidi);
113*4882a593Smuzhiyun if (err < 0)
114*4882a593Smuzhiyun return err;
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun snprintf(rmidi->name, sizeof(rmidi->name),
117*4882a593Smuzhiyun "%s MIDI", bebob->card->shortname);
118*4882a593Smuzhiyun rmidi->private_data = bebob;
119*4882a593Smuzhiyun
120*4882a593Smuzhiyun if (bebob->midi_input_ports > 0) {
121*4882a593Smuzhiyun rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
122*4882a593Smuzhiyun
123*4882a593Smuzhiyun snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
124*4882a593Smuzhiyun &capture_ops);
125*4882a593Smuzhiyun
126*4882a593Smuzhiyun str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
127*4882a593Smuzhiyun
128*4882a593Smuzhiyun set_midi_substream_names(bebob, str);
129*4882a593Smuzhiyun }
130*4882a593Smuzhiyun
131*4882a593Smuzhiyun if (bebob->midi_output_ports > 0) {
132*4882a593Smuzhiyun rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
133*4882a593Smuzhiyun
134*4882a593Smuzhiyun snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
135*4882a593Smuzhiyun &playback_ops);
136*4882a593Smuzhiyun
137*4882a593Smuzhiyun str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
138*4882a593Smuzhiyun
139*4882a593Smuzhiyun set_midi_substream_names(bebob, str);
140*4882a593Smuzhiyun }
141*4882a593Smuzhiyun
142*4882a593Smuzhiyun if ((bebob->midi_output_ports > 0) && (bebob->midi_input_ports > 0))
143*4882a593Smuzhiyun rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
144*4882a593Smuzhiyun
145*4882a593Smuzhiyun return 0;
146*4882a593Smuzhiyun }
147