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