1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2019 Intel Corporation. All rights reserved.
4
5 #include <sound/pcm.h>
6 #include <sound/soc.h>
7 #include <sound/hda_codec.h>
8 #include <sound/hda_i915.h>
9 #include "../../codecs/hdac_hda.h"
10
11 #include "hda_dsp_common.h"
12
13 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
14
15 /*
16 * Search card topology and return PCM device number
17 * matching Nth HDMI device (zero-based index).
18 */
hda_dsp_hdmi_pcm_handle(struct snd_soc_card * card,int hdmi_idx)19 static struct snd_pcm *hda_dsp_hdmi_pcm_handle(struct snd_soc_card *card,
20 int hdmi_idx)
21 {
22 struct snd_soc_pcm_runtime *rtd;
23 struct snd_pcm *spcm;
24 int i = 0;
25
26 for_each_card_rtds(card, rtd) {
27 spcm = rtd->pcm ?
28 rtd->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].pcm : NULL;
29 if (spcm && strstr(spcm->id, "HDMI")) {
30 if (i == hdmi_idx)
31 return rtd->pcm;
32 ++i;
33 }
34 }
35
36 return NULL;
37 }
38
39 /*
40 * Search card topology and register HDMI PCM related controls
41 * to codec driver.
42 */
hda_dsp_hdmi_build_controls(struct snd_soc_card * card,struct snd_soc_component * comp)43 int hda_dsp_hdmi_build_controls(struct snd_soc_card *card,
44 struct snd_soc_component *comp)
45 {
46 struct hdac_hda_priv *hda_pvt;
47 struct hda_codec *hcodec;
48 struct snd_pcm *spcm;
49 struct hda_pcm *hpcm;
50 int err = 0, i = 0;
51
52 if (!comp)
53 return -EINVAL;
54
55 hda_pvt = snd_soc_component_get_drvdata(comp);
56 hcodec = &hda_pvt->codec;
57
58 list_for_each_entry(hpcm, &hcodec->pcm_list_head, list) {
59 spcm = hda_dsp_hdmi_pcm_handle(card, i);
60 if (spcm) {
61 hpcm->pcm = spcm;
62 hpcm->device = spcm->device;
63 dev_dbg(card->dev,
64 "%s: mapping HDMI converter %d to PCM %d (%p)\n",
65 __func__, i, hpcm->device, spcm);
66 } else {
67 hpcm->pcm = NULL;
68 hpcm->device = SNDRV_PCM_INVALID_DEVICE;
69 dev_warn(card->dev,
70 "%s: no PCM in topology for HDMI converter %d\n\n",
71 __func__, i);
72 }
73 i++;
74 }
75 snd_hdac_display_power(hcodec->core.bus,
76 HDA_CODEC_IDX_CONTROLLER, true);
77 err = snd_hda_codec_build_controls(hcodec);
78 if (err < 0)
79 dev_err(card->dev, "unable to create controls %d\n", err);
80 snd_hdac_display_power(hcodec->core.bus,
81 HDA_CODEC_IDX_CONTROLLER, false);
82
83 return err;
84 }
85
86 #endif
87
