61 struct rt5677_dsp {  struct
120 	struct rt5677_dsp *rt5677_dsp =  in rt5677_spi_pcm_close()  local
123 	cancel_delayed_work_sync(&rt5677_dsp->copy_work);  in rt5677_spi_pcm_close()
133 	struct rt5677_dsp *rt5677_dsp =  in rt5677_spi_hw_params()  local
136 	mutex_lock(&rt5677_dsp->dma_lock);  in rt5677_spi_hw_params()
137 	rt5677_dsp->substream = substream;  in rt5677_spi_hw_params()
138 	mutex_unlock(&rt5677_dsp->dma_lock);  in rt5677_spi_hw_params()
147 	struct rt5677_dsp *rt5677_dsp =  in rt5677_spi_hw_free()  local
150 	mutex_lock(&rt5677_dsp->dma_lock);  in rt5677_spi_hw_free()
151 	rt5677_dsp->substream = NULL;  in rt5677_spi_hw_free()
152 	mutex_unlock(&rt5677_dsp->dma_lock);  in rt5677_spi_hw_free()
166 	struct rt5677_dsp *rt5677_dsp =  in rt5677_spi_prepare()  local
170 	rt5677_dsp->dma_offset = 0;  in rt5677_spi_prepare()
171 	rt5677_dsp->avail_bytes = 0;  in rt5677_spi_prepare()
180 	struct rt5677_dsp *rt5677_dsp =  in rt5677_spi_pcm_pointer()  local
183 	return bytes_to_frames(runtime, rt5677_dsp->dma_offset);  in rt5677_spi_pcm_pointer()
211 static int rt5677_spi_copy_block(struct rt5677_dsp *rt5677_dsp,  in rt5677_spi_copy_block()  argument
214 	struct snd_pcm_runtime *runtime = rt5677_dsp->substream->runtime;  in rt5677_spi_copy_block()
220 		dev_err(rt5677_dsp->dev,  in rt5677_spi_copy_block()
239 	if (rt5677_dsp->dma_offset + first_chunk_len > runtime->dma_bytes) {  in rt5677_spi_copy_block()
242 		first_chunk_len = runtime->dma_bytes - rt5677_dsp->dma_offset;  in rt5677_spi_copy_block()
248 			runtime->dma_area + rt5677_dsp->dma_offset,  in rt5677_spi_copy_block()
252 	rt5677_dsp->dma_offset += first_chunk_len;  in rt5677_spi_copy_block()
253 	if (rt5677_dsp->dma_offset == runtime->dma_bytes)  in rt5677_spi_copy_block()
254 		rt5677_dsp->dma_offset = 0;  in rt5677_spi_copy_block()
262 			rt5677_dsp->dma_offset = second_chunk_len;  in rt5677_spi_copy_block()
275 static int rt5677_spi_copy(struct rt5677_dsp *rt5677_dsp, u32 amount)  in rt5677_spi_copy()  argument
283 	target = rt5677_dsp->mic_read_offset + amount;  in rt5677_spi_copy()
285 	ret |= rt5677_spi_copy_block(rt5677_dsp, rt5677_dsp->mic_read_offset,  in rt5677_spi_copy()
291 		ret |= rt5677_spi_copy_block(rt5677_dsp, 0, target);  in rt5677_spi_copy()
295 		rt5677_dsp->mic_read_offset = target;  in rt5677_spi_copy()
305 	struct rt5677_dsp *rt5677_dsp =  in rt5677_spi_copy_work()  local
306 		container_of(work, struct rt5677_dsp, copy_work.work);  in rt5677_spi_copy_work()
314 	mutex_lock(&rt5677_dsp->dma_lock);  in rt5677_spi_copy_work()
315 	if (!rt5677_dsp->substream) {  in rt5677_spi_copy_work()
316 		dev_err(rt5677_dsp->dev, "No pcm substream\n");  in rt5677_spi_copy_work()
320 	runtime = rt5677_dsp->substream->runtime;  in rt5677_spi_copy_work()
323 		dev_err(rt5677_dsp->dev, "No mic_write_offset\n");  in rt5677_spi_copy_work()
331 	if (rt5677_dsp->new_hotword) {  in rt5677_spi_copy_work()
332 		rt5677_dsp->new_hotword = false;  in rt5677_spi_copy_work()
335 			rt5677_dsp->mic_read_offset = RT5677_MIC_BUF_BYTES -  in rt5677_spi_copy_work()
339 			rt5677_dsp->mic_read_offset = mic_write_offset -  in rt5677_spi_copy_work()
344 	if (rt5677_dsp->mic_read_offset <= mic_write_offset)  in rt5677_spi_copy_work()
345 		new_bytes = mic_write_offset - rt5677_dsp->mic_read_offset;  in rt5677_spi_copy_work()
348 				- rt5677_dsp->mic_read_offset;  in rt5677_spi_copy_work()
351 	period_bytes = snd_pcm_lib_period_bytes(rt5677_dsp->substream);  in rt5677_spi_copy_work()
354 				- rt5677_dsp->avail_bytes);  in rt5677_spi_copy_work()
355 		ret = rt5677_spi_copy(rt5677_dsp, copy_bytes);  in rt5677_spi_copy_work()
357 			dev_err(rt5677_dsp->dev, "Copy failed %d\n", ret);  in rt5677_spi_copy_work()
360 		rt5677_dsp->avail_bytes += copy_bytes;  in rt5677_spi_copy_work()
361 		if (rt5677_dsp->avail_bytes >= period_bytes) {  in rt5677_spi_copy_work()
362 			snd_pcm_period_elapsed(rt5677_dsp->substream);  in rt5677_spi_copy_work()
363 			rt5677_dsp->avail_bytes = 0;  in rt5677_spi_copy_work()
369 	schedule_delayed_work(&rt5677_dsp->copy_work, msecs_to_jiffies(delay));  in rt5677_spi_copy_work()
371 	mutex_unlock(&rt5677_dsp->dma_lock);  in rt5677_spi_copy_work()
384 	struct rt5677_dsp *rt5677_dsp;  in rt5677_spi_pcm_probe()  local
386 	rt5677_dsp = devm_kzalloc(component->dev, sizeof(*rt5677_dsp),  in rt5677_spi_pcm_probe()
388 	if (!rt5677_dsp)  in rt5677_spi_pcm_probe()
390 	rt5677_dsp->dev = &g_spi->dev;  in rt5677_spi_pcm_probe()
391 	mutex_init(&rt5677_dsp->dma_lock);  in rt5677_spi_pcm_probe()
392 	INIT_DELAYED_WORK(&rt5677_dsp->copy_work, rt5677_spi_copy_work);  in rt5677_spi_pcm_probe()
394 	snd_soc_component_set_drvdata(component, rt5677_dsp);  in rt5677_spi_pcm_probe()
583 	struct rt5677_dsp *rt5677_dsp;  in rt5677_spi_hotword_detected()  local
588 	rt5677_dsp = dev_get_drvdata(&g_spi->dev);  in rt5677_spi_hotword_detected()
589 	if (!rt5677_dsp) {  in rt5677_spi_hotword_detected()
594 	mutex_lock(&rt5677_dsp->dma_lock);  in rt5677_spi_hotword_detected()
595 	dev_info(rt5677_dsp->dev, "Hotword detected\n");  in rt5677_spi_hotword_detected()
596 	rt5677_dsp->new_hotword = true;  in rt5677_spi_hotword_detected()
597 	mutex_unlock(&rt5677_dsp->dma_lock);  in rt5677_spi_hotword_detected()
599 	schedule_delayed_work(&rt5677_dsp->copy_work, 0);  in rt5677_spi_hotword_detected()