1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2020, 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 <linux/soundwire/sdw.h>
11#include <sound/jack.h>
12#include <linux/input-event-codes.h>
13#include "qdsp6/q6afe.h"
14#include "common.h"
15#include "sdw.h"
16
17#define DRIVER_NAME		"sm8250"
18#define MI2S_BCLK_RATE		1536000
19
20struct sm8250_snd_data {
21	bool stream_prepared[AFE_PORT_MAX];
22	struct snd_soc_card *card;
23	struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
24	struct snd_soc_jack jack;
25	bool jack_setup;
26};
27
28static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
29{
30	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
31
32	return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
33}
34
35static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
36				     struct snd_pcm_hw_params *params)
37{
38	struct snd_interval *rate = hw_param_interval(params,
39					SNDRV_PCM_HW_PARAM_RATE);
40	struct snd_interval *channels = hw_param_interval(params,
41					SNDRV_PCM_HW_PARAM_CHANNELS);
42
43	rate->min = rate->max = 48000;
44	channels->min = channels->max = 2;
45
46	return 0;
47}
48
49static int sm8250_snd_startup(struct snd_pcm_substream *substream)
50{
51	unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
52	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
53	struct snd_soc_pcm_runtime *rtd = substream->private_data;
54	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
55	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
56
57	switch (cpu_dai->id) {
58	case TERTIARY_MI2S_RX:
59		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
60		snd_soc_dai_set_sysclk(cpu_dai,
61			Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
62			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
63		snd_soc_dai_set_fmt(cpu_dai, fmt);
64		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
65		break;
66	default:
67		break;
68	}
69
70	return qcom_snd_sdw_startup(substream);
71}
72
73static void sm2450_snd_shutdown(struct snd_pcm_substream *substream)
74{
75	struct snd_soc_pcm_runtime *rtd = substream->private_data;
76	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
77	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
78	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
79
80	data->sruntime[cpu_dai->id] = NULL;
81	sdw_release_stream(sruntime);
82}
83
84static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
85				struct snd_pcm_hw_params *params)
86{
87	struct snd_soc_pcm_runtime *rtd = substream->private_data;
88	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
89	struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
90
91	return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
92}
93
94static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
95{
96	struct snd_soc_pcm_runtime *rtd = substream->private_data;
97	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
98	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
99	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
100
101	return qcom_snd_sdw_prepare(substream, sruntime,
102				    &data->stream_prepared[cpu_dai->id]);
103}
104
105static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
106{
107	struct snd_soc_pcm_runtime *rtd = substream->private_data;
108	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
109	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
110	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
111
112	return qcom_snd_sdw_hw_free(substream, sruntime,
113				    &data->stream_prepared[cpu_dai->id]);
114}
115
116static const struct snd_soc_ops sm8250_be_ops = {
117	.startup = sm8250_snd_startup,
118	.shutdown = sm2450_snd_shutdown,
119	.hw_params = sm8250_snd_hw_params,
120	.hw_free = sm8250_snd_hw_free,
121	.prepare = sm8250_snd_prepare,
122};
123
124static void sm8250_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 = sm8250_snd_init;
132			link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
133			link->ops = &sm8250_be_ops;
134		}
135	}
136}
137
138static int sm8250_platform_probe(struct platform_device *pdev)
139{
140	struct snd_soc_card *card;
141	struct sm8250_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
149	card->owner = THIS_MODULE;
150	/* Allocate the private data */
151	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
152	if (!data)
153		return -ENOMEM;
154
155	card->dev = dev;
156	dev_set_drvdata(dev, card);
157	snd_soc_card_set_drvdata(card, data);
158	ret = qcom_snd_parse_of(card);
159	if (ret)
160		return ret;
161
162	card->driver_name = DRIVER_NAME;
163	sm8250_add_be_ops(card);
164	return devm_snd_soc_register_card(dev, card);
165}
166
167static const struct of_device_id snd_sm8250_dt_match[] = {
168	{.compatible = "qcom,sm8250-sndcard"},
169	{.compatible = "qcom,qrb5165-rb5-sndcard"},
170	{}
171};
172
173MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
174
175static struct platform_driver snd_sm8250_driver = {
176	.probe  = sm8250_platform_probe,
177	.driver = {
178		.name = "snd-sm8250",
179		.of_match_table = snd_sm8250_dt_match,
180	},
181};
182module_platform_driver(snd_sm8250_driver);
183MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
184MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
185MODULE_LICENSE("GPL");
186