1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2021, Linaro Limited
3
4#include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
5#include <linux/err.h>
6#include <linux/init.h>
7#include <linux/module.h>
8#include <linux/device.h>
9#include <linux/platform_device.h>
10#include <linux/slab.h>
11#include <sound/pcm.h>
12#include <sound/soc.h>
13#include <sound/pcm_params.h>
14#include "q6dsp-lpass-ports.h"
15#include "q6dsp-common.h"
16#include "audioreach.h"
17#include "q6apm.h"
18
19#define AUDIOREACH_BE_PCM_BASE 16
20
21struct q6apm_lpass_dai_data {
22 struct q6apm_graph *graph[APM_PORT_MAX];
23 bool is_port_started[APM_PORT_MAX];
24 struct audioreach_module_config module_config[APM_PORT_MAX];
25};
26
27static int q6dma_set_channel_map(struct snd_soc_dai *dai,
28 unsigned int tx_num,
29 const unsigned int *tx_ch_mask,
30 unsigned int rx_num,
31 const unsigned int *rx_ch_mask)
32{
33
34 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dev: dai->dev);
35 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
36 int i;
37
38 switch (dai->id) {
39 case WSA_CODEC_DMA_TX_0:
40 case WSA_CODEC_DMA_TX_1:
41 case WSA_CODEC_DMA_TX_2:
42 case VA_CODEC_DMA_TX_0:
43 case VA_CODEC_DMA_TX_1:
44 case VA_CODEC_DMA_TX_2:
45 case TX_CODEC_DMA_TX_0:
46 case TX_CODEC_DMA_TX_1:
47 case TX_CODEC_DMA_TX_2:
48 case TX_CODEC_DMA_TX_3:
49 case TX_CODEC_DMA_TX_4:
50 case TX_CODEC_DMA_TX_5:
51 if (!tx_ch_mask) {
52 dev_err(dai->dev, "tx slot not found\n");
53 return -EINVAL;
54 }
55
56 if (tx_num > AR_PCM_MAX_NUM_CHANNEL) {
57 dev_err(dai->dev, "invalid tx num %d\n",
58 tx_num);
59 return -EINVAL;
60 }
61 for (i = 0; i < tx_num; i++)
62 cfg->channel_map[i] = tx_ch_mask[i];
63
64 break;
65 case WSA_CODEC_DMA_RX_0:
66 case WSA_CODEC_DMA_RX_1:
67 case RX_CODEC_DMA_RX_0:
68 case RX_CODEC_DMA_RX_1:
69 case RX_CODEC_DMA_RX_2:
70 case RX_CODEC_DMA_RX_3:
71 case RX_CODEC_DMA_RX_4:
72 case RX_CODEC_DMA_RX_5:
73 case RX_CODEC_DMA_RX_6:
74 case RX_CODEC_DMA_RX_7:
75 /* rx */
76 if (!rx_ch_mask) {
77 dev_err(dai->dev, "rx slot not found\n");
78 return -EINVAL;
79 }
80 if (rx_num > APM_PORT_MAX_AUDIO_CHAN_CNT) {
81 dev_err(dai->dev, "invalid rx num %d\n",
82 rx_num);
83 return -EINVAL;
84 }
85 for (i = 0; i < rx_num; i++)
86 cfg->channel_map[i] = rx_ch_mask[i];
87
88 break;
89 default:
90 dev_err(dai->dev, "%s: invalid dai id 0x%x\n",
91 __func__, dai->id);
92 return -EINVAL;
93 }
94
95 return 0;
96}
97
98static int q6hdmi_hw_params(struct snd_pcm_substream *substream,
99 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
100{
101 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dev: dai->dev);
102 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
103 int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;
104 int ret;
105
106 cfg->bit_width = params_width(p: params);
107 cfg->sample_rate = params_rate(p: params);
108 cfg->num_channels = channels;
109 audioreach_set_default_channel_mapping(ch_map: cfg->channel_map, num_channels: channels);
110
111 switch (dai->id) {
112 case DISPLAY_PORT_RX_0:
113 cfg->dp_idx = 0;
114 break;
115 case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7:
116 cfg->dp_idx = dai->id - DISPLAY_PORT_RX_1 + 1;
117 break;
118 }
119
120 ret = q6dsp_get_channel_allocation(channels);
121 if (ret < 0)
122 return ret;
123
124 cfg->channel_allocation = ret;
125
126 return 0;
127}
128
129static int q6dma_hw_params(struct snd_pcm_substream *substream,
130 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
131{
132 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dev: dai->dev);
133 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
134 int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;
135
136 cfg->bit_width = params_width(p: params);
137 cfg->sample_rate = params_rate(p: params);
138 cfg->num_channels = channels;
139 audioreach_set_default_channel_mapping(ch_map: cfg->channel_map, num_channels: channels);
140
141 return 0;
142}
143
144static void q6apm_lpass_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
145{
146 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dev: dai->dev);
147 int rc;
148
149 if (dai_data->is_port_started[dai->id]) {
150 rc = q6apm_graph_stop(graph: dai_data->graph[dai->id]);
151 dai_data->is_port_started[dai->id] = false;
152 if (rc < 0)
153 dev_err(dai->dev, "fail to close APM port (%d)\n", rc);
154 }
155
156 if (dai_data->graph[dai->id]) {
157 q6apm_graph_close(graph: dai_data->graph[dai->id]);
158 dai_data->graph[dai->id] = NULL;
159 }
160}
161
162static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
163{
164 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dev: dai->dev);
165 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
166 struct q6apm_graph *graph;
167 int graph_id = dai->id;
168 int rc;
169
170 if (dai_data->is_port_started[dai->id]) {
171 q6apm_graph_stop(graph: dai_data->graph[dai->id]);
172 dai_data->is_port_started[dai->id] = false;
173
174 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
175 q6apm_graph_close(graph: dai_data->graph[dai->id]);
176 dai_data->graph[dai->id] = NULL;
177 }
178 }
179
180 /**
181 * It is recommend to load DSP with source graph first and then sink
182 * graph, so sequence for playback and capture will be different
183 */
184 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
185 graph = q6apm_graph_open(dev: dai->dev, NULL, priv: dai->dev, graph_id);
186 if (IS_ERR(ptr: graph)) {
187 dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
188 rc = PTR_ERR(ptr: graph);
189 return rc;
190 }
191 dai_data->graph[graph_id] = graph;
192 }
193
194 cfg->direction = substream->stream;
195 rc = q6apm_graph_media_format_pcm(graph: dai_data->graph[dai->id], cfg);
196 if (rc) {
197 dev_err(dai->dev, "Failed to set media format %d\n", rc);
198 goto err;
199 }
200
201 rc = q6apm_graph_prepare(graph: dai_data->graph[dai->id]);
202 if (rc) {
203 dev_err(dai->dev, "Failed to prepare Graph %d\n", rc);
204 goto err;
205 }
206
207 rc = q6apm_graph_start(graph: dai_data->graph[dai->id]);
208 if (rc < 0) {
209 dev_err(dai->dev, "Failed to start APM port %d\n", dai->id);
210 goto err;
211 }
212 dai_data->is_port_started[dai->id] = true;
213
214 return 0;
215err:
216 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
217 q6apm_graph_close(graph: dai_data->graph[dai->id]);
218 dai_data->graph[dai->id] = NULL;
219 }
220 return rc;
221}
222
223static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
224{
225 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dev: dai->dev);
226 struct q6apm_graph *graph;
227 int graph_id = dai->id;
228
229 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
230 graph = q6apm_graph_open(dev: dai->dev, NULL, priv: dai->dev, graph_id);
231 if (IS_ERR(ptr: graph)) {
232 dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
233 return PTR_ERR(ptr: graph);
234 }
235 dai_data->graph[graph_id] = graph;
236 }
237
238 return 0;
239}
240
241static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
242{
243 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dev: dai->dev);
244 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
245
246 cfg->fmt = fmt;
247
248 return 0;
249}
250
251static const struct snd_soc_dai_ops q6dma_ops = {
252 .prepare = q6apm_lpass_dai_prepare,
253 .startup = q6apm_lpass_dai_startup,
254 .shutdown = q6apm_lpass_dai_shutdown,
255 .set_channel_map = q6dma_set_channel_map,
256 .hw_params = q6dma_hw_params,
257};
258
259static const struct snd_soc_dai_ops q6i2s_ops = {
260 .prepare = q6apm_lpass_dai_prepare,
261 .startup = q6apm_lpass_dai_startup,
262 .shutdown = q6apm_lpass_dai_shutdown,
263 .set_channel_map = q6dma_set_channel_map,
264 .hw_params = q6dma_hw_params,
265 .set_fmt = q6i2s_set_fmt,
266};
267
268static const struct snd_soc_dai_ops q6hdmi_ops = {
269 .prepare = q6apm_lpass_dai_prepare,
270 .startup = q6apm_lpass_dai_startup,
271 .shutdown = q6apm_lpass_dai_shutdown,
272 .hw_params = q6hdmi_hw_params,
273 .set_fmt = q6i2s_set_fmt,
274};
275
276static const struct snd_soc_component_driver q6apm_lpass_dai_component = {
277 .name = "q6apm-be-dai-component",
278 .of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name,
279 .be_pcm_base = AUDIOREACH_BE_PCM_BASE,
280 .use_dai_pcm_id = true,
281};
282
283static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev)
284{
285 struct q6dsp_audio_port_dai_driver_config cfg;
286 struct q6apm_lpass_dai_data *dai_data;
287 struct snd_soc_dai_driver *dais;
288 struct device *dev = &pdev->dev;
289 int num_dais;
290
291 dai_data = devm_kzalloc(dev, size: sizeof(*dai_data), GFP_KERNEL);
292 if (!dai_data)
293 return -ENOMEM;
294
295 dev_set_drvdata(dev, data: dai_data);
296
297 memset(&cfg, 0, sizeof(cfg));
298 cfg.q6i2s_ops = &q6i2s_ops;
299 cfg.q6dma_ops = &q6dma_ops;
300 cfg.q6hdmi_ops = &q6hdmi_ops;
301 dais = q6dsp_audio_ports_set_config(dev, cfg: &cfg, num_dais: &num_dais);
302
303 return devm_snd_soc_register_component(dev, component_driver: &q6apm_lpass_dai_component, dai_drv: dais, num_dai: num_dais);
304}
305
306#ifdef CONFIG_OF
307static const struct of_device_id q6apm_lpass_dai_device_id[] = {
308 { .compatible = "qcom,q6apm-lpass-dais" },
309 {},
310};
311MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id);
312#endif
313
314static struct platform_driver q6apm_lpass_dai_platform_driver = {
315 .driver = {
316 .name = "q6apm-lpass-dais",
317 .of_match_table = of_match_ptr(q6apm_lpass_dai_device_id),
318 },
319 .probe = q6apm_lpass_dai_dev_probe,
320};
321module_platform_driver(q6apm_lpass_dai_platform_driver);
322
323MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver");
324MODULE_LICENSE("GPL");
325

source code of linux/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c