x1e80100.c

  1// SPDX-License-Identifier: GPL-2.0
  2// Copyright (c) 2023, Linaro Limited
  3
  4#include <dt-bindings/sound/qcom,q6afe.h>
  5#include <linux/module.h>
  6#include <linux/platform_device.h>
  7#include <linux/soundwire/sdw.h>
  8#include <sound/pcm.h>
  9#include <sound/jack.h>
 10#include <sound/soc.h>
 11#include <sound/soc-dapm.h>
 12
 13#include "common.h"
 14#include "qdsp6/q6afe.h"
 15#include "qdsp6/q6dsp-common.h"
 16#include "sdw.h"
 17
 18struct x1e80100_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 x1e80100_snd_init(struct snd_soc_pcm_runtime *rtd)
 27{
 28	struct x1e80100_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_jack *dp_jack = NULL;
 31	int dp_pcm_id = 0;
 32
 33	switch (cpu_dai->id) {
 34	case DISPLAY_PORT_RX_0:
 35		dp_pcm_id = 0;
 36		dp_jack = &data->dp_jack[dp_pcm_id];
 37		break;
 38	case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7:
 39		dp_pcm_id = cpu_dai->id - DISPLAY_PORT_RX_1 + 1;
 40		dp_jack = &data->dp_jack[dp_pcm_id];
 41		break;
 42	default:
 43		break;
 44	}
 45
 46	if (dp_jack)
 47		return qcom_snd_dp_jack_setup(rtd, dp_jack, dp_pcm_id);
 48
 49	return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
 50}
 51
 52static int x1e80100_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 53				     struct snd_pcm_hw_params *params)
 54{
 55	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 56	struct snd_interval *rate = hw_param_interval(params,
 57						      SNDRV_PCM_HW_PARAM_RATE);
 58	struct snd_interval *channels = hw_param_interval(params,
 59							  SNDRV_PCM_HW_PARAM_CHANNELS);
 60
 61	rate->min = rate->max = 48000;
 62	switch (cpu_dai->id) {
 63	case TX_CODEC_DMA_TX_0:
 64	case TX_CODEC_DMA_TX_1:
 65	case TX_CODEC_DMA_TX_2:
 66	case TX_CODEC_DMA_TX_3:
 67		channels->min = 1;
 68		break;
 69	default:
 70		break;
 71	}
 72
 73	return 0;
 74}
 75
 76static int x1e80100_snd_hw_map_channels(unsigned int *ch_map, int num)
 77{
 78	switch (num) {
 79	case 1:
 80		ch_map[0] = PCM_CHANNEL_FC;
 81		break;
 82	case 2:
 83		ch_map[0] = PCM_CHANNEL_FL;
 84		ch_map[1] = PCM_CHANNEL_FR;
 85		break;
 86	case 3:
 87		ch_map[0] = PCM_CHANNEL_FL;
 88		ch_map[1] = PCM_CHANNEL_FR;
 89		ch_map[2] = PCM_CHANNEL_FC;
 90		break;
 91	case 4:
 92		ch_map[0] = PCM_CHANNEL_FL;
 93		ch_map[1] = PCM_CHANNEL_LB;
 94		ch_map[2] = PCM_CHANNEL_FR;
 95		ch_map[3] = PCM_CHANNEL_RB;
 96		break;
 97	default:
 98		return -EINVAL;
 99	}
100
101	return 0;
102}
103
104static int x1e80100_snd_prepare(struct snd_pcm_substream *substream)
105{
106	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
107	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
108	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
109	unsigned int channels = substream->runtime->channels;
110	unsigned int rx_slot[4];
111	int ret;
112
113	switch (cpu_dai->id) {
114	case WSA_CODEC_DMA_RX_0:
115	case WSA_CODEC_DMA_RX_1:
116		ret = x1e80100_snd_hw_map_channels(rx_slot, channels);
117		if (ret)
118			return ret;
119
120		ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
121						  channels, rx_slot);
122		if (ret)
123			return ret;
124		break;
125	default:
126		break;
127	}
128
129	return qcom_snd_sdw_prepare(substream, &data->stream_prepared[cpu_dai->id]);
130}
131
132static int x1e80100_snd_hw_free(struct snd_pcm_substream *substream)
133{
134	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
135	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
136	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
137
138	return qcom_snd_sdw_hw_free(substream, &data->stream_prepared[cpu_dai->id]);
139}
140
141static const struct snd_soc_ops x1e80100_be_ops = {
142	.startup = qcom_snd_sdw_startup,
143	.shutdown = qcom_snd_sdw_shutdown,
144	.hw_free = x1e80100_snd_hw_free,
145	.prepare = x1e80100_snd_prepare,
146};
147
148static void x1e80100_add_be_ops(struct snd_soc_card *card)
149{
150	struct snd_soc_dai_link *link;
151	int i;
152
153	for_each_card_prelinks(card, i, link) {
154		if (link->no_pcm == 1) {
155			link->init = x1e80100_snd_init;
156			link->be_hw_params_fixup = x1e80100_be_hw_params_fixup;
157			link->ops = &x1e80100_be_ops;
158		}
159	}
160}
161
162static int x1e80100_platform_probe(struct platform_device *pdev)
163{
164	struct snd_soc_card *card;
165	struct x1e80100_snd_data *data;
166	struct device *dev = &pdev->dev;
167	int ret;
168
169	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
170	if (!card)
171		return -ENOMEM;
172	/* Allocate the private data */
173	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
174	if (!data)
175		return -ENOMEM;
176
177	card->owner = THIS_MODULE;
178	card->dev = dev;
179	dev_set_drvdata(dev, card);
180	snd_soc_card_set_drvdata(card, data);
181
182	ret = qcom_snd_parse_of(card);
183	if (ret)
184		return ret;
185
186	card->driver_name = of_device_get_match_data(dev);
187	x1e80100_add_be_ops(card);
188
189	return devm_snd_soc_register_card(dev, card);
190}
191
192static const struct of_device_id snd_x1e80100_dt_match[] = {
193	{ .compatible = "qcom,x1e80100-sndcard", .data = "x1e80100" },
194	{ .compatible = "qcom,glymur-sndcard", .data = "glymur" },
195	{}
196};
197MODULE_DEVICE_TABLE(of, snd_x1e80100_dt_match);
198
199static struct platform_driver snd_x1e80100_driver = {
200	.probe  = x1e80100_platform_probe,
201	.driver = {
202		.name = "snd-x1e80100",
203		.of_match_table = snd_x1e80100_dt_match,
204	},
205};
206module_platform_driver(snd_x1e80100_driver);
207MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
208MODULE_AUTHOR("Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>");
209MODULE_DESCRIPTION("Qualcomm X1E80100 ASoC Machine Driver");
210MODULE_LICENSE("GPL");