1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
6 #include <linux/module.h>
7 #include <linux/platform_device.h>
8 #include <linux/of_device.h>
10 #include <sound/pcm_params.h>
12 #include "qdsp6/q6afe.h"
14 #define DEFAULT_SAMPLE_RATE_48K 48000
15 #define DEFAULT_MCLK_RATE 24576000
16 #define DEFAULT_BCLK_RATE 12288000
18 struct sdm845_snd_data {
19 struct snd_soc_card *card;
20 uint32_t pri_mi2s_clk_count;
21 uint32_t quat_tdm_clk_count;
24 static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};
26 static int sdm845_tdm_snd_hw_params(struct snd_pcm_substream *substream,
27 struct snd_pcm_hw_params *params)
29 struct snd_soc_pcm_runtime *rtd = substream->private_data;
30 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
32 int channels, slot_width;
34 switch (params_format(params)) {
35 case SNDRV_PCM_FORMAT_S16_LE:
39 dev_err(rtd->dev, "%s: invalid param format 0x%x\n",
40 __func__, params_format(params));
44 channels = params_channels(params);
45 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
46 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3,
49 dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
54 ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
55 channels, tdm_slot_offset);
57 dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
62 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0,
65 dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
70 ret = snd_soc_dai_set_channel_map(cpu_dai, channels,
71 tdm_slot_offset, 0, NULL);
73 dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
82 static int sdm845_snd_hw_params(struct snd_pcm_substream *substream,
83 struct snd_pcm_hw_params *params)
85 struct snd_soc_pcm_runtime *rtd = substream->private_data;
86 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
89 switch (cpu_dai->id) {
90 case QUATERNARY_TDM_RX_0:
91 case QUATERNARY_TDM_TX_0:
92 ret = sdm845_tdm_snd_hw_params(substream, params);
95 pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
101 static int sdm845_snd_startup(struct snd_pcm_substream *substream)
103 unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
104 struct snd_soc_pcm_runtime *rtd = substream->private_data;
105 struct snd_soc_card *card = rtd->card;
106 struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
107 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
109 switch (cpu_dai->id) {
110 case PRIMARY_MI2S_RX:
111 case PRIMARY_MI2S_TX:
112 if (++(data->pri_mi2s_clk_count) == 1) {
113 snd_soc_dai_set_sysclk(cpu_dai,
114 Q6AFE_LPASS_CLK_ID_MCLK_1,
115 DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
116 snd_soc_dai_set_sysclk(cpu_dai,
117 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
118 DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
120 snd_soc_dai_set_fmt(cpu_dai, fmt);
123 case QUATERNARY_TDM_RX_0:
124 case QUATERNARY_TDM_TX_0:
125 if (++(data->quat_tdm_clk_count) == 1) {
126 snd_soc_dai_set_sysclk(cpu_dai,
127 Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
128 DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
133 pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
139 static void sdm845_snd_shutdown(struct snd_pcm_substream *substream)
141 struct snd_soc_pcm_runtime *rtd = substream->private_data;
142 struct snd_soc_card *card = rtd->card;
143 struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
144 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
146 switch (cpu_dai->id) {
147 case PRIMARY_MI2S_RX:
148 case PRIMARY_MI2S_TX:
149 if (--(data->pri_mi2s_clk_count) == 0) {
150 snd_soc_dai_set_sysclk(cpu_dai,
151 Q6AFE_LPASS_CLK_ID_MCLK_1,
152 0, SNDRV_PCM_STREAM_PLAYBACK);
153 snd_soc_dai_set_sysclk(cpu_dai,
154 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
155 0, SNDRV_PCM_STREAM_PLAYBACK);
159 case QUATERNARY_TDM_RX_0:
160 case QUATERNARY_TDM_TX_0:
161 if (--(data->quat_tdm_clk_count) == 0) {
162 snd_soc_dai_set_sysclk(cpu_dai,
163 Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
164 0, SNDRV_PCM_STREAM_PLAYBACK);
169 pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
174 static struct snd_soc_ops sdm845_be_ops = {
175 .hw_params = sdm845_snd_hw_params,
176 .startup = sdm845_snd_startup,
177 .shutdown = sdm845_snd_shutdown,
180 static int sdm845_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
181 struct snd_pcm_hw_params *params)
183 struct snd_interval *rate = hw_param_interval(params,
184 SNDRV_PCM_HW_PARAM_RATE);
185 struct snd_interval *channels = hw_param_interval(params,
186 SNDRV_PCM_HW_PARAM_CHANNELS);
187 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
189 rate->min = rate->max = DEFAULT_SAMPLE_RATE_48K;
190 channels->min = channels->max = 2;
191 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
196 static void sdm845_add_be_ops(struct snd_soc_card *card)
198 struct snd_soc_dai_link *link = card->dai_link;
199 int i, num_links = card->num_links;
201 for (i = 0; i < num_links; i++) {
202 if (link->no_pcm == 1) {
203 link->ops = &sdm845_be_ops;
204 link->be_hw_params_fixup = sdm845_be_hw_params_fixup;
210 static int sdm845_snd_platform_probe(struct platform_device *pdev)
212 struct snd_soc_card *card;
213 struct sdm845_snd_data *data;
214 struct device *dev = &pdev->dev;
217 card = kzalloc(sizeof(*card), GFP_KERNEL);
221 /* Allocate the private data */
222 data = kzalloc(sizeof(*data), GFP_KERNEL);
225 goto data_alloc_fail;
229 card->owner = THIS_MODULE;
230 dev_set_drvdata(dev, card);
231 ret = qcom_snd_parse_of(card);
233 dev_err(dev, "Error parsing OF data\n");
238 snd_soc_card_set_drvdata(card, data);
240 sdm845_add_be_ops(card);
241 ret = snd_soc_register_card(card);
243 dev_err(dev, "Sound card registration failed\n");
244 goto register_card_fail;
249 kfree(card->dai_link);
257 static int sdm845_snd_platform_remove(struct platform_device *pdev)
259 struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
260 struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
262 snd_soc_unregister_card(card);
263 kfree(card->dai_link);
269 static const struct of_device_id sdm845_snd_device_id[] = {
270 { .compatible = "qcom,sdm845-sndcard" },
273 MODULE_DEVICE_TABLE(of, sdm845_snd_device_id);
275 static struct platform_driver sdm845_snd_driver = {
276 .probe = sdm845_snd_platform_probe,
277 .remove = sdm845_snd_platform_remove,
279 .name = "msm-snd-sdm845",
280 .of_match_table = sdm845_snd_device_id,
283 module_platform_driver(sdm845_snd_driver);
285 MODULE_DESCRIPTION("sdm845 ASoC Machine Driver");
286 MODULE_LICENSE("GPL v2");