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