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"); 266