sc8280xp.c

  1// SPDX-License-Identifier: GPL-2.0
  2// Copyright (c) 2022, Linaro Limited
  3
  4#include <dt-bindings/sound/qcom,q6afe.h>
  5#include <linux/module.h>
  6#include <linux/platform_device.h>
  7#include <sound/soc.h>
  8#include <sound/soc-dapm.h>
  9#include <sound/pcm.h>
 10#include <sound/pcm_params.h>
 11#include <linux/soundwire/sdw.h>
 12#include <sound/jack.h>
 13#include <linux/input-event-codes.h>
 14#include "qdsp6/q6afe.h"
 15#include "common.h"
 16#include "sdw.h"
 17
 18struct sc8280xp_snd_data {
 19	bool stream_prepared[AFE_PORT_MAX];
 20	struct snd_soc_card *card;
 21	struct snd_soc_jack jack;
 22	struct snd_soc_jack dp_jack[8];
 23	bool jack_setup;
 24};
 25
 26static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
 27{
 28	struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 29	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 30	struct snd_soc_card *card = rtd->card;
 31	struct snd_soc_jack *dp_jack  = NULL;
 32	int dp_pcm_id = 0;
 33
 34	switch (cpu_dai->id) {
 35	case PRIMARY_MI2S_RX...QUATERNARY_MI2S_TX:
 36	case QUINARY_MI2S_RX...QUINARY_MI2S_TX:
 37		snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
 38		break;
 39	case WSA_CODEC_DMA_RX_0:
 40	case WSA_CODEC_DMA_RX_1:
 41		/*
 42		 * Set limit of -3 dB on Digital Volume and 0 dB on PA Volume
 43		 * to reduce the risk of speaker damage until we have active
 44		 * speaker protection in place.
 45		 */
 46		snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 81);
 47		snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 81);
 48		snd_soc_limit_volume(card, "SpkrLeft PA Volume", 17);
 49		snd_soc_limit_volume(card, "SpkrRight PA Volume", 17);
 50		break;
 51	case DISPLAY_PORT_RX_0:
 52		/* DISPLAY_PORT dai ids are not contiguous */
 53		dp_pcm_id = 0;
 54		dp_jack = &data->dp_jack[dp_pcm_id];
 55		break;
 56	case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7:
 57		dp_pcm_id = cpu_dai->id - DISPLAY_PORT_RX_1 + 1;
 58		dp_jack = &data->dp_jack[dp_pcm_id];
 59		break;
 60	default:
 61		break;
 62	}
 63
 64	if (dp_jack)
 65		return qcom_snd_dp_jack_setup(rtd, dp_jack, dp_pcm_id);
 66
 67	return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
 68}
 69
 70static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 71				     struct snd_pcm_hw_params *params)
 72{
 73	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 74	struct snd_interval *rate = hw_param_interval(params,
 75					SNDRV_PCM_HW_PARAM_RATE);
 76	struct snd_interval *channels = hw_param_interval(params,
 77					SNDRV_PCM_HW_PARAM_CHANNELS);
 78	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 79
 80	rate->min = rate->max = 48000;
 81	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
 82	channels->min = 2;
 83	channels->max = 2;
 84	switch (cpu_dai->id) {
 85	case TX_CODEC_DMA_TX_0:
 86	case TX_CODEC_DMA_TX_1:
 87	case TX_CODEC_DMA_TX_2:
 88	case TX_CODEC_DMA_TX_3:
 89		channels->min = 1;
 90		break;
 91	default:
 92		break;
 93	}
 94
 95
 96	return 0;
 97}
 98
 99static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
100{
101	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
102	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
103	struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
104
105	return qcom_snd_sdw_prepare(substream, &data->stream_prepared[cpu_dai->id]);
106}
107
108static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
109{
110	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
111	struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
112	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
113
114	return qcom_snd_sdw_hw_free(substream, &data->stream_prepared[cpu_dai->id]);
115}
116
117static const struct snd_soc_ops sc8280xp_be_ops = {
118	.startup = qcom_snd_sdw_startup,
119	.shutdown = qcom_snd_sdw_shutdown,
120	.hw_free = sc8280xp_snd_hw_free,
121	.prepare = sc8280xp_snd_prepare,
122};
123
124static void sc8280xp_add_be_ops(struct snd_soc_card *card)
125{
126	struct snd_soc_dai_link *link;
127	int i;
128
129	for_each_card_prelinks(card, i, link) {
130		if (link->no_pcm == 1) {
131			link->init = sc8280xp_snd_init;
132			link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
133			link->ops = &sc8280xp_be_ops;
134		}
135	}
136}
137
138static int sc8280xp_platform_probe(struct platform_device *pdev)
139{
140	struct snd_soc_card *card;
141	struct sc8280xp_snd_data *data;
142	struct device *dev = &pdev->dev;
143	int ret;
144
145	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
146	if (!card)
147		return -ENOMEM;
148	card->owner = THIS_MODULE;
149	/* Allocate the private data */
150	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
151	if (!data)
152		return -ENOMEM;
153
154	card->dev = dev;
155	dev_set_drvdata(dev, card);
156	snd_soc_card_set_drvdata(card, data);
157	ret = qcom_snd_parse_of(card);
158	if (ret)
159		return ret;
160
161	card->driver_name = of_device_get_match_data(dev);
162	sc8280xp_add_be_ops(card);
163	return devm_snd_soc_register_card(dev, card);
164}
165
166static const struct of_device_id snd_sc8280xp_dt_match[] = {
167	{.compatible = "qcom,kaanapali-sndcard", "kaanapali"},
168	{.compatible = "qcom,qcm6490-idp-sndcard", "qcm6490"},
169	{.compatible = "qcom,qcs615-sndcard", "qcs615"},
170	{.compatible = "qcom,qcs6490-rb3gen2-sndcard", "qcs6490"},
171	{.compatible = "qcom,qcs8275-sndcard", "qcs8300"},
172	{.compatible = "qcom,qcs9075-sndcard", "sa8775p"},
173	{.compatible = "qcom,qcs9100-sndcard", "sa8775p"},
174	{.compatible = "qcom,sc8280xp-sndcard", "sc8280xp"},
175	{.compatible = "qcom,sm8450-sndcard", "sm8450"},
176	{.compatible = "qcom,sm8550-sndcard", "sm8550"},
177	{.compatible = "qcom,sm8650-sndcard", "sm8650"},
178	{.compatible = "qcom,sm8750-sndcard", "sm8750"},
179	{}
180};
181
182MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
183
184static struct platform_driver snd_sc8280xp_driver = {
185	.probe  = sc8280xp_platform_probe,
186	.driver = {
187		.name = "snd-sc8280xp",
188		.of_match_table = snd_sc8280xp_dt_match,
189	},
190};
191module_platform_driver(snd_sc8280xp_driver);
192MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
193MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
194MODULE_LICENSE("GPL");