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