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                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 135                         q6apm_graph_close(dai_data->graph[dai->id]);
 136         }
 137
 138         /**
 139          * It is recommend to load DSP with source graph first and then sink
 140          * graph, so sequence for playback and capture will be different
 141          */
 142         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 143                 graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
 144                 if (IS_ERR(graph)) {
 145                         dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
 146                         rc = PTR_ERR(graph);
 147                         return rc;
 148                 }
 149                 dai_data->graph[graph_id] = graph;
 150         }
 151
 152         cfg->direction = substream->stream;
 153         rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg);
 154
 155         if (rc) {
 156                 dev_err(dai->dev, "Failed to set media format %d\n", rc);
 157                 return rc;
 158         }
 159
 160         rc = q6apm_graph_prepare(dai_data->graph[dai->id]);
 161         if (rc) {
 162                 dev_err(dai->dev, "Failed to prepare Graph %d\n", rc);
 163                 return rc;
 164         }
 165
 166         rc = q6apm_graph_start(dai_data->graph[dai->id]);
 167         if (rc < 0) {
 168                 dev_err(dai->dev, "fail to start APM port %x\n", dai->id);
 169                 return rc;
 170         }
 171         dai_data->is_port_started[dai->id] = true;
 172
 173         return 0;
 174 }
 175
 176 static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 177 {
 178         struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 179         struct q6apm_graph *graph;
 180         int graph_id = dai->id;
 181
 182         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 183                 graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
 184                 if (IS_ERR(graph)) {
 185                         dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
 186                         return PTR_ERR(graph);
 187                 }
 188                 dai_data->graph[graph_id] = graph;
 189         }
 190
 191         return 0;
 192 }
 193
 194 static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 195 {
 196         struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 197         struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
 198
 199         cfg->fmt = fmt;
 200
 201         return 0;
 202 }
 203
 204 static const struct snd_soc_dai_ops q6dma_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 };
 211
 212 static const struct snd_soc_dai_ops q6i2s_ops = {
 213         .prepare        = q6apm_lpass_dai_prepare,
 214         .startup        = q6apm_lpass_dai_startup,
 215         .shutdown       = q6apm_lpass_dai_shutdown,
 216         .set_channel_map  = q6dma_set_channel_map,
 217         .hw_params        = q6dma_hw_params,
 218         .set_fmt        = q6i2s_set_fmt,
 219 };
 220
 221 static const struct snd_soc_component_driver q6apm_lpass_dai_component = {
 222         .name = "q6apm-be-dai-component",
 223         .of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name,
 224         .be_pcm_base = AUDIOREACH_BE_PCM_BASE,
 225         .use_dai_pcm_id = true,
 226 };
 227
 228 static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev)
 229 {
 230         struct q6dsp_audio_port_dai_driver_config cfg;
 231         struct q6apm_lpass_dai_data *dai_data;
 232         struct snd_soc_dai_driver *dais;
 233         struct device *dev = &pdev->dev;
 234         int num_dais;
 235
 236         dai_data = devm_kzalloc(dev, sizeof(*dai_data), GFP_KERNEL);
 237         if (!dai_data)
 238                 return -ENOMEM;
 239
 240         dev_set_drvdata(dev, dai_data);
 241
 242         memset(&cfg, 0, sizeof(cfg));
 243         cfg.q6i2s_ops = &q6i2s_ops;
 244         cfg.q6dma_ops = &q6dma_ops;
 245         dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais);
 246
 247         return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais);
 248 }
 249
 250 #ifdef CONFIG_OF
 251 static const struct of_device_id q6apm_lpass_dai_device_id[] = {
 252         { .compatible = "qcom,q6apm-lpass-dais" },
 253         {},
 254 };
 255 MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id);
 256 #endif
 257
 258 static struct platform_driver q6apm_lpass_dai_platform_driver = {
 259         .driver = {
 260                 .name = "q6apm-lpass-dais",
 261                 .of_match_table = of_match_ptr(q6apm_lpass_dai_device_id),
 262         },
 263         .probe = q6apm_lpass_dai_dev_probe,
 264 };
 265 module_platform_driver(q6apm_lpass_dai_platform_driver);
 266
 267 MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver");
 268 MODULE_LICENSE("GPL");