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 "sdw.h"
16
17struct x1e80100_snd_data {
18	bool stream_prepared[AFE_PORT_MAX];
19	struct snd_soc_card *card;
20	struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
21	struct snd_soc_jack jack;
22	bool jack_setup;
23};
24
25static int x1e80100_snd_init(struct snd_soc_pcm_runtime *rtd)
26{
27	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
28
29	return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
30}
31
32static void x1e80100_snd_shutdown(struct snd_pcm_substream *substream)
33{
34	struct snd_soc_pcm_runtime *rtd = substream->private_data;
35	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
36	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
37	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
38
39	data->sruntime[cpu_dai->id] = NULL;
40	sdw_release_stream(sruntime);
41}
42
43static int x1e80100_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
44				     struct snd_pcm_hw_params *params)
45{
46	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
47	struct snd_interval *rate = hw_param_interval(params,
48						      SNDRV_PCM_HW_PARAM_RATE);
49	struct snd_interval *channels = hw_param_interval(params,
50							  SNDRV_PCM_HW_PARAM_CHANNELS);
51
52	rate->min = rate->max = 48000;
53	switch (cpu_dai->id) {
54	case TX_CODEC_DMA_TX_0:
55	case TX_CODEC_DMA_TX_1:
56	case TX_CODEC_DMA_TX_2:
57	case TX_CODEC_DMA_TX_3:
58		channels->min = 1;
59		break;
60	default:
61		break;
62	}
63
64	return 0;
65}
66
67static int x1e80100_snd_hw_params(struct snd_pcm_substream *substream,
68				struct snd_pcm_hw_params *params)
69{
70	struct snd_soc_pcm_runtime *rtd = substream->private_data;
71	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
72	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
73
74	return qcom_snd_sdw_hw_params(substream, params, &data->sruntime[cpu_dai->id]);
75}
76
77static int x1e80100_snd_prepare(struct snd_pcm_substream *substream)
78{
79	struct snd_soc_pcm_runtime *rtd = substream->private_data;
80	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
81	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
82	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
83
84	return qcom_snd_sdw_prepare(substream, sruntime,
85				    &data->stream_prepared[cpu_dai->id]);
86}
87
88static int x1e80100_snd_hw_free(struct snd_pcm_substream *substream)
89{
90	struct snd_soc_pcm_runtime *rtd = substream->private_data;
91	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
92	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
93	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
94
95	return qcom_snd_sdw_hw_free(substream, sruntime,
96				    &data->stream_prepared[cpu_dai->id]);
97}
98
99static const struct snd_soc_ops x1e80100_be_ops = {
100	.startup = qcom_snd_sdw_startup,
101	.shutdown = x1e80100_snd_shutdown,
102	.hw_params = x1e80100_snd_hw_params,
103	.hw_free = x1e80100_snd_hw_free,
104	.prepare = x1e80100_snd_prepare,
105};
106
107static void x1e80100_add_be_ops(struct snd_soc_card *card)
108{
109	struct snd_soc_dai_link *link;
110	int i;
111
112	for_each_card_prelinks(card, i, link) {
113		if (link->no_pcm == 1) {
114			link->init = x1e80100_snd_init;
115			link->be_hw_params_fixup = x1e80100_be_hw_params_fixup;
116			link->ops = &x1e80100_be_ops;
117		}
118	}
119}
120
121static int x1e80100_platform_probe(struct platform_device *pdev)
122{
123	struct snd_soc_card *card;
124	struct x1e80100_snd_data *data;
125	struct device *dev = &pdev->dev;
126	int ret;
127
128	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
129	if (!card)
130		return -ENOMEM;
131	/* Allocate the private data */
132	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
133	if (!data)
134		return -ENOMEM;
135
136	card->owner = THIS_MODULE;
137	card->dev = dev;
138	dev_set_drvdata(dev, card);
139	snd_soc_card_set_drvdata(card, data);
140
141	ret = qcom_snd_parse_of(card);
142	if (ret)
143		return ret;
144
145	card->driver_name = "x1e80100";
146	x1e80100_add_be_ops(card);
147
148	return devm_snd_soc_register_card(dev, card);
149}
150
151static const struct of_device_id snd_x1e80100_dt_match[] = {
152	{ .compatible = "qcom,x1e80100-sndcard", },
153	{}
154};
155MODULE_DEVICE_TABLE(of, snd_x1e80100_dt_match);
156
157static struct platform_driver snd_x1e80100_driver = {
158	.probe  = x1e80100_platform_probe,
159	.driver = {
160		.name = "snd-x1e80100",
161		.of_match_table = snd_x1e80100_dt_match,
162	},
163};
164module_platform_driver(snd_x1e80100_driver);
165MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
166MODULE_AUTHOR("Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>");
167MODULE_DESCRIPTION("Qualcomm X1E80100 ASoC Machine Driver");
168MODULE_LICENSE("GPL");
169