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 27 static int q6dma_set_channel_map(struct snd_soc_dai *dai, 28 unsigned int tx_num, 29 const unsigned int *tx_ch_mask, 30 unsigned int rx_num, 31 const unsigned int *rx_ch_mask) 32 { 33 34 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 35 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 36 int i; 37 38 switch (dai->id) { 39 case WSA_CODEC_DMA_TX_0: 40 case WSA_CODEC_DMA_TX_1: 41 case WSA_CODEC_DMA_TX_2: 42 case VA_CODEC_DMA_TX_0: 43 case VA_CODEC_DMA_TX_1: 44 case VA_CODEC_DMA_TX_2: 45 case TX_CODEC_DMA_TX_0: 46 case TX_CODEC_DMA_TX_1: 47 case TX_CODEC_DMA_TX_2: 48 case TX_CODEC_DMA_TX_3: 49 case TX_CODEC_DMA_TX_4: 50 case TX_CODEC_DMA_TX_5: 51 if (!tx_ch_mask) { 52 dev_err(dai->dev, "tx slot not found\n"); 53 return -EINVAL; 54 } 55 56 if (tx_num > AR_PCM_MAX_NUM_CHANNEL) { 57 dev_err(dai->dev, "invalid tx num %d\n", 58 tx_num); 59 return -EINVAL; 60 } 61 for (i = 0; i < tx_num; i++) 62 cfg->channel_map[i] = tx_ch_mask[i]; 63 64 break; 65 case WSA_CODEC_DMA_RX_0: 66 case WSA_CODEC_DMA_RX_1: 67 case RX_CODEC_DMA_RX_0: 68 case RX_CODEC_DMA_RX_1: 69 case RX_CODEC_DMA_RX_2: 70 case RX_CODEC_DMA_RX_3: 71 case RX_CODEC_DMA_RX_4: 72 case RX_CODEC_DMA_RX_5: 73 case RX_CODEC_DMA_RX_6: 74 case RX_CODEC_DMA_RX_7: 75 /* rx */ 76 if (!rx_ch_mask) { 77 dev_err(dai->dev, "rx slot not found\n"); 78 return -EINVAL; 79 } 80 if (rx_num > APM_PORT_MAX_AUDIO_CHAN_CNT) { 81 dev_err(dai->dev, "invalid rx num %d\n", 82 rx_num); 83 return -EINVAL; 84 } 85 for (i = 0; i < rx_num; i++) 86 cfg->channel_map[i] = rx_ch_mask[i]; 87 88 break; 89 default: 90 dev_err(dai->dev, "%s: invalid dai id 0x%x\n", 91 __func__, dai->id); 92 return -EINVAL; 93 } 94 95 return 0; 96 } 97 98 static int q6hdmi_hw_params(struct snd_pcm_substream *substream, 99 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 100 { 101 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 102 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 103 int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max; 104 int ret; 105 106 cfg->bit_width = params_width(params); 107 cfg->sample_rate = params_rate(params); 108 cfg->num_channels = channels; 109 audioreach_set_default_channel_mapping(cfg->channel_map, channels); 110 111 switch (dai->id) { 112 case DISPLAY_PORT_RX_0: 113 cfg->dp_idx = 0; 114 break; 115 case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7: 116 cfg->dp_idx = dai->id - DISPLAY_PORT_RX_1 + 1; 117 break; 118 } 119 120 ret = q6dsp_get_channel_allocation(channels); 121 if (ret < 0) 122 return ret; 123 124 cfg->channel_allocation = ret; 125 126 return 0; 127 } 128 129 static int q6dma_hw_params(struct snd_pcm_substream *substream, 130 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 131 { 132 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 133 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 134 int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max; 135 136 cfg->bit_width = params_width(params); 137 cfg->sample_rate = params_rate(params); 138 cfg->num_channels = channels; 139 audioreach_set_default_channel_mapping(cfg->channel_map, channels); 140 141 return 0; 142 } 143 144 static void q6apm_lpass_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 145 { 146 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 147 int rc; 148 149 if (!dai_data->is_port_started[dai->id]) 150 return; 151 rc = q6apm_graph_stop(dai_data->graph[dai->id]); 152 if (rc < 0) 153 dev_err(dai->dev, "fail to close APM port (%d)\n", rc); 154 155 q6apm_graph_close(dai_data->graph[dai->id]); 156 dai_data->is_port_started[dai->id] = false; 157 } 158 159 static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 160 { 161 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 162 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 163 struct q6apm_graph *graph; 164 int graph_id = dai->id; 165 int rc; 166 167 if (dai_data->is_port_started[dai->id]) { 168 q6apm_graph_stop(dai_data->graph[dai->id]); 169 dai_data->is_port_started[dai->id] = false; 170 171 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 172 q6apm_graph_close(dai_data->graph[dai->id]); 173 } 174 175 /** 176 * It is recommend to load DSP with source graph first and then sink 177 * graph, so sequence for playback and capture will be different 178 */ 179 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 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 rc = PTR_ERR(graph); 184 return rc; 185 } 186 dai_data->graph[graph_id] = graph; 187 } 188 189 cfg->direction = substream->stream; 190 rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg); 191 192 if (rc) { 193 dev_err(dai->dev, "Failed to set media format %d\n", rc); 194 return rc; 195 } 196 197 rc = q6apm_graph_prepare(dai_data->graph[dai->id]); 198 if (rc) { 199 dev_err(dai->dev, "Failed to prepare Graph %d\n", rc); 200 return rc; 201 } 202 203 rc = q6apm_graph_start(dai_data->graph[dai->id]); 204 if (rc < 0) { 205 dev_err(dai->dev, "fail to start APM port %x\n", dai->id); 206 return rc; 207 } 208 dai_data->is_port_started[dai->id] = true; 209 210 return 0; 211 } 212 213 static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 214 { 215 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 216 struct q6apm_graph *graph; 217 int graph_id = dai->id; 218 219 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { 220 graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id); 221 if (IS_ERR(graph)) { 222 dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id); 223 return PTR_ERR(graph); 224 } 225 dai_data->graph[graph_id] = graph; 226 } 227 228 return 0; 229 } 230 231 static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 232 { 233 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 234 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 235 236 cfg->fmt = fmt; 237 238 return 0; 239 } 240 241 static const struct snd_soc_dai_ops q6dma_ops = { 242 .prepare = q6apm_lpass_dai_prepare, 243 .startup = q6apm_lpass_dai_startup, 244 .shutdown = q6apm_lpass_dai_shutdown, 245 .set_channel_map = q6dma_set_channel_map, 246 .hw_params = q6dma_hw_params, 247 }; 248 249 static const struct snd_soc_dai_ops q6i2s_ops = { 250 .prepare = q6apm_lpass_dai_prepare, 251 .startup = q6apm_lpass_dai_startup, 252 .shutdown = q6apm_lpass_dai_shutdown, 253 .set_channel_map = q6dma_set_channel_map, 254 .hw_params = q6dma_hw_params, 255 }; 256 257 static const struct snd_soc_dai_ops q6hdmi_ops = { 258 .prepare = q6apm_lpass_dai_prepare, 259 .startup = q6apm_lpass_dai_startup, 260 .shutdown = q6apm_lpass_dai_shutdown, 261 .hw_params = q6hdmi_hw_params, 262 .set_fmt = q6i2s_set_fmt, 263 }; 264 265 static const struct snd_soc_component_driver q6apm_lpass_dai_component = { 266 .name = "q6apm-be-dai-component", 267 .of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name, 268 .be_pcm_base = AUDIOREACH_BE_PCM_BASE, 269 .use_dai_pcm_id = true, 270 }; 271 272 static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev) 273 { 274 struct q6dsp_audio_port_dai_driver_config cfg; 275 struct q6apm_lpass_dai_data *dai_data; 276 struct snd_soc_dai_driver *dais; 277 struct device *dev = &pdev->dev; 278 int num_dais; 279 280 dai_data = devm_kzalloc(dev, sizeof(*dai_data), GFP_KERNEL); 281 if (!dai_data) 282 return -ENOMEM; 283 284 dev_set_drvdata(dev, dai_data); 285 286 memset(&cfg, 0, sizeof(cfg)); 287 cfg.q6i2s_ops = &q6i2s_ops; 288 cfg.q6dma_ops = &q6dma_ops; 289 cfg.q6hdmi_ops = &q6hdmi_ops; 290 dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais); 291 292 return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais); 293 } 294 295 #ifdef CONFIG_OF 296 static const struct of_device_id q6apm_lpass_dai_device_id[] = { 297 { .compatible = "qcom,q6apm-lpass-dais" }, 298 {}, 299 }; 300 MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id); 301 #endif 302 303 static struct platform_driver q6apm_lpass_dai_platform_driver = { 304 .driver = { 305 .name = "q6apm-lpass-dais", 306 .of_match_table = of_match_ptr(q6apm_lpass_dai_device_id), 307 }, 308 .probe = q6apm_lpass_dai_dev_probe, 309 }; 310 module_platform_driver(q6apm_lpass_dai_platform_driver); 311 312 MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver"); 313 MODULE_LICENSE("GPL"); 314