sound/soc/qcom/qdsp6/q6apm-lpass-dais.c

   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
  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
  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
 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
 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
 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
 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
 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");