1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/dma-mapping.h>
11 #include <sound/soc-dai.h>
13 #include "aiu-fifo.h"
37 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_pointer()  local
38 	struct snd_pcm_runtime *runtime = substream->runtime;  in aiu_fifo_pointer()
41 	addr = snd_soc_component_read(component, fifo->mem_offset + AIU_MEM_RD);  in aiu_fifo_pointer()
43 	return bytes_to_frames(runtime, addr - (unsigned int)runtime->dma_addr);  in aiu_fifo_pointer()
48 	struct snd_soc_component *component = dai->component;  in aiu_fifo_enable()
49 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_enable()  local
54 				      fifo->mem_offset + AIU_MEM_CONTROL,  in aiu_fifo_enable()
73 		return -EINVAL;  in aiu_fifo_trigger()
82 	struct snd_soc_component *component = dai->component;  in aiu_fifo_prepare()
83 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_prepare()  local
86 				      fifo->mem_offset + AIU_MEM_CONTROL,  in aiu_fifo_prepare()
90 				      fifo->mem_offset + AIU_MEM_CONTROL,  in aiu_fifo_prepare()
99 	struct snd_pcm_runtime *runtime = substream->runtime;  in aiu_fifo_hw_params()
100 	struct snd_soc_component *component = dai->component;  in aiu_fifo_hw_params()
101 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_hw_params()  local
104 	/* Setup the fifo boundaries */  in aiu_fifo_hw_params()
105 	end = runtime->dma_addr + runtime->dma_bytes - fifo->fifo_block;  in aiu_fifo_hw_params()
106 	snd_soc_component_write(component, fifo->mem_offset + AIU_MEM_START,  in aiu_fifo_hw_params()
107 				runtime->dma_addr);  in aiu_fifo_hw_params()
108 	snd_soc_component_write(component, fifo->mem_offset + AIU_MEM_RD,  in aiu_fifo_hw_params()
109 				runtime->dma_addr);  in aiu_fifo_hw_params()
110 	snd_soc_component_write(component, fifo->mem_offset + AIU_MEM_END,  in aiu_fifo_hw_params()
113 	/* Setup the fifo to read all the memory - no skip */  in aiu_fifo_hw_params()
115 				      fifo->mem_offset + AIU_MEM_MASKS,  in aiu_fifo_hw_params()
135 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_startup()  local
138 	snd_soc_set_runtime_hwparams(substream, fifo->pcm);  in aiu_fifo_startup()
141 	 * Make sure the buffer and period size are multiple of the fifo burst  in aiu_fifo_startup()
142 	 * size  in aiu_fifo_startup()
144 	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,  in aiu_fifo_startup()
146 					 fifo->fifo_block);  in aiu_fifo_startup()
150 	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,  in aiu_fifo_startup()
152 					 fifo->fifo_block);  in aiu_fifo_startup()
156 	ret = clk_prepare_enable(fifo->pclk);  in aiu_fifo_startup()
160 	ret = request_irq(fifo->irq, aiu_fifo_isr, 0, dev_name(dai->dev),  in aiu_fifo_startup()
163 		clk_disable_unprepare(fifo->pclk);  in aiu_fifo_startup()
171 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_shutdown()  local
173 	free_irq(fifo->irq, substream);  in aiu_fifo_shutdown()
174 	clk_disable_unprepare(fifo->pclk);  in aiu_fifo_shutdown()
180 	struct snd_card *card = rtd->card->snd_card;  in aiu_fifo_pcm_new()
181 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_pcm_new()  local
182 	size_t size = fifo->pcm->buffer_bytes_max;  in aiu_fifo_pcm_new()  local
185 	ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));  in aiu_fifo_pcm_new()
189 	snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,  in aiu_fifo_pcm_new()
190 				       card->dev, size, size);  in aiu_fifo_pcm_new()
197 	struct aiu_fifo *fifo;  in aiu_fifo_dai_probe()  local
199 	fifo = kzalloc(sizeof(*fifo), GFP_KERNEL);  in aiu_fifo_dai_probe()
200 	if (!fifo)  in aiu_fifo_dai_probe()
201 		return -ENOMEM;  in aiu_fifo_dai_probe()
203 	snd_soc_dai_dma_data_set_playback(dai, fifo);  in aiu_fifo_dai_probe()
210 	struct aiu_fifo *fifo = snd_soc_dai_dma_data_get_playback(dai);  in aiu_fifo_dai_remove()  local
212 	kfree(fifo);  in aiu_fifo_dai_remove()