1 // SPDX-License-Identifier: GPL-2.0
10 #include <sound/soc-dai.h>
12 #include "aiu-fifo.h"
27 	struct snd_soc_pcm_runtime *rtd = ss->private_data;  in aiu_fifo_dai()
36 	struct aiu_fifo *fifo = dai->playback_dma_data;  in aiu_fifo_pointer()  local
37 	struct snd_pcm_runtime *runtime = substream->runtime;  in aiu_fifo_pointer()
40 	addr = snd_soc_component_read(component, fifo->mem_offset + AIU_MEM_RD);  in aiu_fifo_pointer()
42 	return bytes_to_frames(runtime, addr - (unsigned int)runtime->dma_addr);  in aiu_fifo_pointer()
47 	struct snd_soc_component *component = dai->component;  in aiu_fifo_enable()
48 	struct aiu_fifo *fifo = dai->playback_dma_data;  in aiu_fifo_enable()  local
53 				      fifo->mem_offset + AIU_MEM_CONTROL,  in aiu_fifo_enable()
72 		return -EINVAL;  in aiu_fifo_trigger()
81 	struct snd_soc_component *component = dai->component;  in aiu_fifo_prepare()
82 	struct aiu_fifo *fifo = dai->playback_dma_data;  in aiu_fifo_prepare()  local
85 				      fifo->mem_offset + AIU_MEM_CONTROL,  in aiu_fifo_prepare()
89 				      fifo->mem_offset + AIU_MEM_CONTROL,  in aiu_fifo_prepare()
98 	struct snd_pcm_runtime *runtime = substream->runtime;  in aiu_fifo_hw_params()
99 	struct snd_soc_component *component = dai->component;  in aiu_fifo_hw_params()
100 	struct aiu_fifo *fifo = dai->playback_dma_data;  in aiu_fifo_hw_params()  local
103 	/* Setup the fifo boundaries */  in aiu_fifo_hw_params()
104 	end = runtime->dma_addr + runtime->dma_bytes - fifo->fifo_block;  in aiu_fifo_hw_params()
105 	snd_soc_component_write(component, fifo->mem_offset + AIU_MEM_START,  in aiu_fifo_hw_params()
106 				runtime->dma_addr);  in aiu_fifo_hw_params()
107 	snd_soc_component_write(component, fifo->mem_offset + AIU_MEM_RD,  in aiu_fifo_hw_params()
108 				runtime->dma_addr);  in aiu_fifo_hw_params()
109 	snd_soc_component_write(component, fifo->mem_offset + AIU_MEM_END,  in aiu_fifo_hw_params()
112 	/* Setup the fifo to read all the memory - no skip */  in aiu_fifo_hw_params()
114 				      fifo->mem_offset + AIU_MEM_MASKS,  in aiu_fifo_hw_params()
134 	struct aiu_fifo *fifo = dai->playback_dma_data;  in aiu_fifo_startup()  local
137 	snd_soc_set_runtime_hwparams(substream, fifo->pcm);  in aiu_fifo_startup()
140 	 * Make sure the buffer and period size are multiple of the fifo burst  in aiu_fifo_startup()
141 	 * size  in aiu_fifo_startup()
143 	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,  in aiu_fifo_startup()
145 					 fifo->fifo_block);  in aiu_fifo_startup()
149 	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,  in aiu_fifo_startup()
151 					 fifo->fifo_block);  in aiu_fifo_startup()
155 	ret = clk_prepare_enable(fifo->pclk);  in aiu_fifo_startup()
159 	ret = request_irq(fifo->irq, aiu_fifo_isr, 0, dev_name(dai->dev),  in aiu_fifo_startup()
162 		clk_disable_unprepare(fifo->pclk);  in aiu_fifo_startup()
170 	struct aiu_fifo *fifo = dai->playback_dma_data;  in aiu_fifo_shutdown()  local
172 	free_irq(fifo->irq, substream);  in aiu_fifo_shutdown()
173 	clk_disable_unprepare(fifo->pclk);  in aiu_fifo_shutdown()
179 	struct snd_card *card = rtd->card->snd_card;  in aiu_fifo_pcm_new()
180 	struct aiu_fifo *fifo = dai->playback_dma_data;  in aiu_fifo_pcm_new()  local
181 	size_t size = fifo->pcm->buffer_bytes_max;  in aiu_fifo_pcm_new()  local
183 	snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,  in aiu_fifo_pcm_new()
184 				       card->dev, size, size);  in aiu_fifo_pcm_new()
191 	struct aiu_fifo *fifo;  in aiu_fifo_dai_probe()  local
193 	fifo = kzalloc(sizeof(*fifo), GFP_KERNEL);  in aiu_fifo_dai_probe()
194 	if (!fifo)  in aiu_fifo_dai_probe()
195 		return -ENOMEM;  in aiu_fifo_dai_probe()
197 	dai->playback_dma_data = fifo;  in aiu_fifo_dai_probe()
204 	kfree(dai->playback_dma_data);  in aiu_fifo_dai_remove()