sm8250.c

  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 <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 "usb_offload_utils.h"
 17#include "sdw.h"
 18
 19#define MI2S_BCLK_RATE		1536000
 20
 21struct sm8250_snd_data {
 22	bool stream_prepared[AFE_PORT_MAX];
 23	struct snd_soc_card *card;
 24	struct snd_soc_jack jack;
 25	struct snd_soc_jack usb_offload_jack;
 26	bool usb_offload_jack_setup;
 27	struct snd_soc_jack dp_jack;
 28	bool jack_setup;
 29};
 30
 31static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
 32{
 33	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 34	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 35
 36	switch (cpu_dai->id) {
 37	case DISPLAY_PORT_RX:
 38		return qcom_snd_dp_jack_setup(rtd, &data->dp_jack, 0);
 39	case USB_RX:
 40		return qcom_snd_usb_offload_jack_setup(rtd, &data->usb_offload_jack,
 41						       &data->usb_offload_jack_setup);
 42	default:
 43		return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
 44	}
 45}
 46
 47static void sm8250_snd_exit(struct snd_soc_pcm_runtime *rtd)
 48{
 49	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 50	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 51
 52	if (cpu_dai->id == USB_RX)
 53		qcom_snd_usb_offload_jack_remove(rtd,
 54						 &data->usb_offload_jack_setup);
 55
 56}
 57
 58static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 59				     struct snd_pcm_hw_params *params)
 60{
 61	struct snd_interval *rate = hw_param_interval(params,
 62					SNDRV_PCM_HW_PARAM_RATE);
 63	struct snd_interval *channels = hw_param_interval(params,
 64					SNDRV_PCM_HW_PARAM_CHANNELS);
 65	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 66
 67	rate->min = rate->max = 48000;
 68	channels->min = channels->max = 2;
 69	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
 70
 71	return 0;
 72}
 73
 74static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 75{
 76	unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
 77	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
 78	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 79	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 80	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 81
 82	switch (cpu_dai->id) {
 83	case PRIMARY_MI2S_RX:
 84		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
 85		snd_soc_dai_set_sysclk(cpu_dai,
 86			Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
 87			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 88		snd_soc_dai_set_fmt(cpu_dai, fmt);
 89		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 90		break;
 91	case SECONDARY_MI2S_RX:
 92		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
 93		snd_soc_dai_set_sysclk(cpu_dai,
 94			Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
 95			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 96		snd_soc_dai_set_fmt(cpu_dai, fmt);
 97		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 98		break;
 99	case TERTIARY_MI2S_RX:
100		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
101		snd_soc_dai_set_sysclk(cpu_dai,
102			Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
103			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
104		snd_soc_dai_set_fmt(cpu_dai, fmt);
105		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
106		break;
107	default:
108		break;
109	}
110
111	return qcom_snd_sdw_startup(substream);
112}
113
114static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
115{
116	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
117	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
118	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
119
120	return qcom_snd_sdw_prepare(substream, &data->stream_prepared[cpu_dai->id]);
121}
122
123static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
124{
125	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
126	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
127	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
128
129	return qcom_snd_sdw_hw_free(substream, &data->stream_prepared[cpu_dai->id]);
130}
131
132static const struct snd_soc_ops sm8250_be_ops = {
133	.startup = sm8250_snd_startup,
134	.shutdown = qcom_snd_sdw_shutdown,
135	.hw_free = sm8250_snd_hw_free,
136	.prepare = sm8250_snd_prepare,
137};
138
139static void sm8250_add_be_ops(struct snd_soc_card *card)
140{
141	struct snd_soc_dai_link *link;
142	int i;
143
144	for_each_card_prelinks(card, i, link) {
145		if (link->no_pcm == 1) {
146			link->init = sm8250_snd_init;
147			link->exit = sm8250_snd_exit;
148			link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
149			link->ops = &sm8250_be_ops;
150		}
151	}
152}
153
154static int sm8250_platform_probe(struct platform_device *pdev)
155{
156	struct snd_soc_card *card;
157	struct sm8250_snd_data *data;
158	struct device *dev = &pdev->dev;
159	int ret;
160
161	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
162	if (!card)
163		return -ENOMEM;
164
165	card->owner = THIS_MODULE;
166	/* Allocate the private data */
167	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
168	if (!data)
169		return -ENOMEM;
170
171	card->dev = dev;
172	dev_set_drvdata(dev, card);
173	snd_soc_card_set_drvdata(card, data);
174	ret = qcom_snd_parse_of(card);
175	if (ret)
176		return ret;
177
178	card->driver_name = of_device_get_match_data(dev);
179	sm8250_add_be_ops(card);
180	return devm_snd_soc_register_card(dev, card);
181}
182
183static const struct of_device_id snd_sm8250_dt_match[] = {
184	{ .compatible = "fairphone,fp4-sndcard", .data = "sm7225" },
185	{ .compatible = "fairphone,fp5-sndcard", .data = "qcm6490" },
186	{ .compatible = "qcom,qrb2210-sndcard", .data = "qcm2290" },
187	{ .compatible = "qcom,qrb4210-rb2-sndcard", .data = "sm4250" },
188	{ .compatible = "qcom,qrb5165-rb5-sndcard", .data = "sm8250" },
189	{ .compatible = "qcom,sm8250-sndcard", .data = "sm8250" },
190	{}
191};
192
193MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
194
195static struct platform_driver snd_sm8250_driver = {
196	.probe  = sm8250_platform_probe,
197	.driver = {
198		.name = "snd-sm8250",
199		.of_match_table = snd_sm8250_dt_match,
200	},
201};
202module_platform_driver(snd_sm8250_driver);
203MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
204MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
205MODULE_LICENSE("GPL");