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"); 269