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 /**
131 * It is recommend to load DSP with source graph first and then sink
132 * graph, so sequence for playback and capture will be different
133 */
134 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
135 graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
136 if (IS_ERR(graph)) {
137 dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
138 rc = PTR_ERR(graph);
139 return rc;
140 }
141 dai_data->graph[graph_id] = graph;
142 }
143
144 cfg->direction = substream->stream;
145 rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg);
146
147 if (rc) {
148 dev_err(dai->dev, "Failed to set media format %d\n", rc);
149 return rc;
150 }
151
152 rc = q6apm_graph_prepare(dai_data->graph[dai->id]);
153 if (rc) {
154 dev_err(dai->dev, "Failed to prepare Graph %d\n", rc);
155 return rc;
156 }
157
158 rc = q6apm_graph_start(dai_data->graph[dai->id]);
159 if (rc < 0) {
160 dev_err(dai->dev, "fail to start APM port %x\n", dai->id);
161 return rc;
162 }
163 dai_data->is_port_started[dai->id] = true;
164
165 return 0;
166 }
167
q6apm_lpass_dai_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)168 static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
169 {
170 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
171 struct q6apm_graph *graph;
172 int graph_id = dai->id;
173
174 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
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 return PTR_ERR(graph);
179 }
180 dai_data->graph[graph_id] = graph;
181 }
182
183 return 0;
184 }
185
q6i2s_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)186 static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
187 {
188 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
189 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
190
191 cfg->fmt = fmt;
192
193 return 0;
194 }
195
196 static const struct snd_soc_dai_ops q6dma_ops = {
197 .prepare = q6apm_lpass_dai_prepare,
198 .startup = q6apm_lpass_dai_startup,
199 .shutdown = q6apm_lpass_dai_shutdown,
200 .set_channel_map = q6dma_set_channel_map,
201 .hw_params = q6dma_hw_params,
202 };
203
204 static const struct snd_soc_dai_ops q6i2s_ops = {
205 .prepare = q6apm_lpass_dai_prepare,
206 .startup = q6apm_lpass_dai_startup,
207 .shutdown = q6apm_lpass_dai_shutdown,
208 .set_channel_map = q6dma_set_channel_map,
209 .hw_params = q6dma_hw_params,
210 .set_fmt = q6i2s_set_fmt,
211 };
212
213 static const struct snd_soc_component_driver q6apm_lpass_dai_component = {
214 .name = "q6apm-be-dai-component",
215 .of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name,
216 .be_pcm_base = AUDIOREACH_BE_PCM_BASE,
217 .use_dai_pcm_id = true,
218 };
219
q6apm_lpass_dai_dev_probe(struct platform_device * pdev)220 static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev)
221 {
222 struct q6dsp_audio_port_dai_driver_config cfg;
223 struct q6apm_lpass_dai_data *dai_data;
224 struct snd_soc_dai_driver *dais;
225 struct device *dev = &pdev->dev;
226 int num_dais;
227
228 dai_data = devm_kzalloc(dev, sizeof(*dai_data), GFP_KERNEL);
229 if (!dai_data)
230 return -ENOMEM;
231
232 dev_set_drvdata(dev, dai_data);
233
234 memset(&cfg, 0, sizeof(cfg));
235 cfg.q6i2s_ops = &q6i2s_ops;
236 cfg.q6dma_ops = &q6dma_ops;
237 dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais);
238
239 return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais);
240 }
241
242 #ifdef CONFIG_OF
243 static const struct of_device_id q6apm_lpass_dai_device_id[] = {
244 { .compatible = "qcom,q6apm-lpass-dais" },
245 {},
246 };
247 MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id);
248 #endif
249
250 static struct platform_driver q6apm_lpass_dai_platform_driver = {
251 .driver = {
252 .name = "q6apm-lpass-dais",
253 .of_match_table = of_match_ptr(q6apm_lpass_dai_device_id),
254 },
255 .probe = q6apm_lpass_dai_dev_probe,
256 };
257 module_platform_driver(q6apm_lpass_dai_platform_driver);
258
259 MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver");
260 MODULE_LICENSE("GPL");
261