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, unsigned int *tx_ch_mask, 29 unsigned int rx_num, unsigned int *rx_ch_mask) 30 { 31 32 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 33 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 34 int ch_mask; 35 36 switch (dai->id) { 37 case WSA_CODEC_DMA_TX_0: 38 case WSA_CODEC_DMA_TX_1: 39 case WSA_CODEC_DMA_TX_2: 40 case VA_CODEC_DMA_TX_0: 41 case VA_CODEC_DMA_TX_1: 42 case VA_CODEC_DMA_TX_2: 43 case TX_CODEC_DMA_TX_0: 44 case TX_CODEC_DMA_TX_1: 45 case TX_CODEC_DMA_TX_2: 46 case TX_CODEC_DMA_TX_3: 47 case TX_CODEC_DMA_TX_4: 48 case TX_CODEC_DMA_TX_5: 49 if (!tx_ch_mask) { 50 dev_err(dai->dev, "tx slot not found\n"); 51 return -EINVAL; 52 } 53 54 if (tx_num > AR_PCM_MAX_NUM_CHANNEL) { 55 dev_err(dai->dev, "invalid tx num %d\n", 56 tx_num); 57 return -EINVAL; 58 } 59 ch_mask = *tx_ch_mask; 60 61 break; 62 case WSA_CODEC_DMA_RX_0: 63 case WSA_CODEC_DMA_RX_1: 64 case RX_CODEC_DMA_RX_0: 65 case RX_CODEC_DMA_RX_1: 66 case RX_CODEC_DMA_RX_2: 67 case RX_CODEC_DMA_RX_3: 68 case RX_CODEC_DMA_RX_4: 69 case RX_CODEC_DMA_RX_5: 70 case RX_CODEC_DMA_RX_6: 71 case RX_CODEC_DMA_RX_7: 72 /* rx */ 73 if (!rx_ch_mask) { 74 dev_err(dai->dev, "rx slot not found\n"); 75 return -EINVAL; 76 } 77 if (rx_num > APM_PORT_MAX_AUDIO_CHAN_CNT) { 78 dev_err(dai->dev, "invalid rx num %d\n", 79 rx_num); 80 return -EINVAL; 81 } 82 ch_mask = *rx_ch_mask; 83 84 break; 85 default: 86 dev_err(dai->dev, "%s: invalid dai id 0x%x\n", 87 __func__, dai->id); 88 return -EINVAL; 89 } 90 91 cfg->active_channels_mask = ch_mask; 92 93 return 0; 94 } 95 96 static int q6hdmi_hw_params(struct snd_pcm_substream *substream, 97 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 98 { 99 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 100 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 101 int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max; 102 int ret; 103 104 cfg->bit_width = params_width(params); 105 cfg->sample_rate = params_rate(params); 106 cfg->num_channels = channels; 107 108 switch (dai->id) { 109 case DISPLAY_PORT_RX_0: 110 cfg->dp_idx = 0; 111 break; 112 case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7: 113 cfg->dp_idx = dai->id - DISPLAY_PORT_RX_1 + 1; 114 break; 115 } 116 117 ret = q6dsp_get_channel_allocation(channels); 118 if (ret < 0) 119 return ret; 120 121 cfg->channel_allocation = ret; 122 123 return 0; 124 } 125 126 static int q6dma_hw_params(struct snd_pcm_substream *substream, 127 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 128 { 129 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 130 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 131 132 cfg->bit_width = params_width(params); 133 cfg->sample_rate = params_rate(params); 134 cfg->num_channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max; 135 136 return 0; 137 } 138 139 static void q6apm_lpass_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 140 { 141 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 142 int rc; 143 144 if (!dai_data->is_port_started[dai->id]) 145 return; 146 rc = q6apm_graph_stop(dai_data->graph[dai->id]); 147 if (rc < 0) 148 dev_err(dai->dev, "fail to close APM port (%d)\n", rc); 149 150 q6apm_graph_close(dai_data->graph[dai->id]); 151 dai_data->is_port_started[dai->id] = false; 152 } 153 154 static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 155 { 156 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 157 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 158 struct q6apm_graph *graph; 159 int graph_id = dai->id; 160 int rc; 161 162 if (dai_data->is_port_started[dai->id]) { 163 q6apm_graph_stop(dai_data->graph[dai->id]); 164 dai_data->is_port_started[dai->id] = false; 165 166 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 167 q6apm_graph_close(dai_data->graph[dai->id]); 168 } 169 170 /** 171 * It is recommend to load DSP with source graph first and then sink 172 * graph, so sequence for playback and capture will be different 173 */ 174 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 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 rc = PTR_ERR(graph); 179 return rc; 180 } 181 dai_data->graph[graph_id] = graph; 182 } 183 184 cfg->direction = substream->stream; 185 rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg); 186 187 if (rc) { 188 dev_err(dai->dev, "Failed to set media format %d\n", rc); 189 return rc; 190 } 191 192 rc = q6apm_graph_prepare(dai_data->graph[dai->id]); 193 if (rc) { 194 dev_err(dai->dev, "Failed to prepare Graph %d\n", rc); 195 return rc; 196 } 197 198 rc = q6apm_graph_start(dai_data->graph[dai->id]); 199 if (rc < 0) { 200 dev_err(dai->dev, "fail to start APM port %x\n", dai->id); 201 return rc; 202 } 203 dai_data->is_port_started[dai->id] = true; 204 205 return 0; 206 } 207 208 static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 209 { 210 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 211 struct q6apm_graph *graph; 212 int graph_id = dai->id; 213 214 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { 215 graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id); 216 if (IS_ERR(graph)) { 217 dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id); 218 return PTR_ERR(graph); 219 } 220 dai_data->graph[graph_id] = graph; 221 } 222 223 return 0; 224 } 225 226 static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 227 { 228 struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev); 229 struct audioreach_module_config *cfg = &dai_data->module_config[dai->id]; 230 231 cfg->fmt = fmt; 232 233 return 0; 234 } 235 236 static const struct snd_soc_dai_ops q6dma_ops = { 237 .prepare = q6apm_lpass_dai_prepare, 238 .startup = q6apm_lpass_dai_startup, 239 .shutdown = q6apm_lpass_dai_shutdown, 240 .set_channel_map = q6dma_set_channel_map, 241 .hw_params = q6dma_hw_params, 242 }; 243 244 static const struct snd_soc_dai_ops q6i2s_ops = { 245 .prepare = q6apm_lpass_dai_prepare, 246 .startup = q6apm_lpass_dai_startup, 247 .shutdown = q6apm_lpass_dai_shutdown, 248 .set_channel_map = q6dma_set_channel_map, 249 .hw_params = q6dma_hw_params, 250 }; 251 252 static const struct snd_soc_dai_ops q6hdmi_ops = { 253 .prepare = q6apm_lpass_dai_prepare, 254 .startup = q6apm_lpass_dai_startup, 255 .shutdown = q6apm_lpass_dai_shutdown, 256 .hw_params = q6hdmi_hw_params, 257 .set_fmt = q6i2s_set_fmt, 258 }; 259 260 static const struct snd_soc_component_driver q6apm_lpass_dai_component = { 261 .name = "q6apm-be-dai-component", 262 .of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name, 263 .be_pcm_base = AUDIOREACH_BE_PCM_BASE, 264 .use_dai_pcm_id = true, 265 }; 266 267 static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev) 268 { 269 struct q6dsp_audio_port_dai_driver_config cfg; 270 struct q6apm_lpass_dai_data *dai_data; 271 struct snd_soc_dai_driver *dais; 272 struct device *dev = &pdev->dev; 273 int num_dais; 274 275 dai_data = devm_kzalloc(dev, sizeof(*dai_data), GFP_KERNEL); 276 if (!dai_data) 277 return -ENOMEM; 278 279 dev_set_drvdata(dev, dai_data); 280 281 memset(&cfg, 0, sizeof(cfg)); 282 cfg.q6i2s_ops = &q6i2s_ops; 283 cfg.q6dma_ops = &q6dma_ops; 284 cfg.q6hdmi_ops = &q6hdmi_ops; 285 dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais); 286 287 return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais); 288 } 289 290 #ifdef CONFIG_OF 291 static const struct of_device_id q6apm_lpass_dai_device_id[] = { 292 { .compatible = "qcom,q6apm-lpass-dais" }, 293 {}, 294 }; 295 MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id); 296 #endif 297 298 static struct platform_driver q6apm_lpass_dai_platform_driver = { 299 .driver = { 300 .name = "q6apm-lpass-dais", 301 .of_match_table = of_match_ptr(q6apm_lpass_dai_device_id), 302 }, 303 .probe = q6apm_lpass_dai_dev_probe, 304 }; 305 module_platform_driver(q6apm_lpass_dai_platform_driver); 306 307 MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver"); 308 MODULE_LICENSE("GPL"); 309