1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
18 #include <linux/dma-mapping.h>
27 #include "jz4740-i2s.h"
96 	struct snd_soc_dai_driver *dai;  member
116 	return readl(i2s->base + reg);  in jz4740_i2s_read()
122 	writel(value, i2s->base + reg);  in jz4740_i2s_write()
126 	struct snd_soc_dai *dai)  in jz4740_i2s_startup()  argument
128 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_startup()
132 	if (snd_soc_dai_active(dai))  in jz4740_i2s_startup()
139 	ret = clk_prepare_enable(i2s->clk_i2s);  in jz4740_i2s_startup()
151 	struct snd_soc_dai *dai)  in jz4740_i2s_shutdown()  argument
153 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_shutdown()
156 	if (snd_soc_dai_active(dai))  in jz4740_i2s_shutdown()
163 	clk_disable_unprepare(i2s->clk_i2s);  in jz4740_i2s_shutdown()
167 	struct snd_soc_dai *dai)  in jz4740_i2s_trigger()  argument
169 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_trigger()
174 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in jz4740_i2s_trigger()
193 		return -EINVAL;  in jz4740_i2s_trigger()
201 static int jz4740_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)  in jz4740_i2s_set_fmt()  argument
203 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_set_fmt()
205 	uint32_t format = 0;  in jz4740_i2s_set_fmt()  local
215 		format |= JZ_AIC_I2S_FMT_ENABLE_SYS_CLK;  in jz4740_i2s_set_fmt()
226 		return -EINVAL;  in jz4740_i2s_set_fmt()
231 		format |= JZ_AIC_I2S_FMT_MSB;  in jz4740_i2s_set_fmt()
236 		return -EINVAL;  in jz4740_i2s_set_fmt()
243 		return -EINVAL;  in jz4740_i2s_set_fmt()
247 	jz4740_i2s_write(i2s, JZ_REG_AIC_I2S_FMT, format);  in jz4740_i2s_set_fmt()
253 	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)  in jz4740_i2s_hw_params()  argument
255 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_hw_params()
263 	div = clk_get_rate(i2s->clk_i2s) / (64 * params_rate(params));  in jz4740_i2s_hw_params()
273 		return -EINVAL;  in jz4740_i2s_hw_params()
276 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {  in jz4740_i2s_hw_params()
285 		div_reg |= (div - 1) << I2SDIV_DV_SHIFT;  in jz4740_i2s_hw_params()
290 		if (i2s->soc_info->version >= JZ_I2S_JZ4770) {  in jz4740_i2s_hw_params()
292 			div_reg |= (div - 1) << I2SDIV_IDV_SHIFT;  in jz4740_i2s_hw_params()
295 			div_reg |= (div - 1) << I2SDIV_DV_SHIFT;  in jz4740_i2s_hw_params()
305 static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,  in jz4740_i2s_set_sysclk()  argument
308 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_set_sysclk()
317 		clk_set_parent(i2s->clk_i2s, parent);  in jz4740_i2s_set_sysclk()
323 		clk_set_parent(i2s->clk_i2s, parent);  in jz4740_i2s_set_sysclk()
324 		ret = clk_set_rate(i2s->clk_i2s, freq);  in jz4740_i2s_set_sysclk()
327 		return -EINVAL;  in jz4740_i2s_set_sysclk()
344 		clk_disable_unprepare(i2s->clk_i2s);  in jz4740_i2s_suspend()
347 	clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_suspend()
358 	ret = clk_prepare_enable(i2s->clk_aic);  in jz4740_i2s_resume()
363 		ret = clk_prepare_enable(i2s->clk_i2s);  in jz4740_i2s_resume()
365 			clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_resume()
382 	dma_data = &i2s->playback_dma_data;  in jz4740_i2c_init_pcm_config()
383 	dma_data->maxburst = 16;  in jz4740_i2c_init_pcm_config()
384 	dma_data->slave_id = JZ4740_DMA_TYPE_AIC_TRANSMIT;  in jz4740_i2c_init_pcm_config()
385 	dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO;  in jz4740_i2c_init_pcm_config()
388 	dma_data = &i2s->capture_dma_data;  in jz4740_i2c_init_pcm_config()
389 	dma_data->maxburst = 16;  in jz4740_i2c_init_pcm_config()
390 	dma_data->slave_id = JZ4740_DMA_TYPE_AIC_RECEIVE;  in jz4740_i2c_init_pcm_config()
391 	dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO;  in jz4740_i2c_init_pcm_config()
394 static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai)  in jz4740_i2s_dai_probe()  argument
396 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_dai_probe()
400 	ret = clk_prepare_enable(i2s->clk_aic);  in jz4740_i2s_dai_probe()
405 	snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data,  in jz4740_i2s_dai_probe()
406 		&i2s->capture_dma_data);  in jz4740_i2s_dai_probe()
408 	if (i2s->soc_info->version >= JZ_I2S_JZ4760) {  in jz4740_i2s_dai_probe()
428 static int jz4740_i2s_dai_remove(struct snd_soc_dai *dai)  in jz4740_i2s_dai_remove()  argument
430 	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in jz4740_i2s_dai_remove()
432 	clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_dai_remove()
469 	.dai = &jz4740_i2s_dai,
474 	.dai = &jz4740_i2s_dai,
497 	.dai = &jz4770_i2s_dai,
502 	.dai = &jz4770_i2s_dai,
506 	.name		= "jz4740-i2s",
512 	{ .compatible = "ingenic,jz4740-i2s", .data = &jz4740_i2s_soc_info },
513 	{ .compatible = "ingenic,jz4760-i2s", .data = &jz4760_i2s_soc_info },
514 	{ .compatible = "ingenic,jz4770-i2s", .data = &jz4770_i2s_soc_info },
515 	{ .compatible = "ingenic,jz4780-i2s", .data = &jz4780_i2s_soc_info },
522 	struct device *dev = &pdev->dev;  in jz4740_i2s_dev_probe()
529 		return -ENOMEM;  in jz4740_i2s_dev_probe()
531 	i2s->soc_info = device_get_match_data(dev);  in jz4740_i2s_dev_probe()
534 	i2s->base = devm_ioremap_resource(dev, mem);  in jz4740_i2s_dev_probe()
535 	if (IS_ERR(i2s->base))  in jz4740_i2s_dev_probe()
536 		return PTR_ERR(i2s->base);  in jz4740_i2s_dev_probe()
538 	i2s->phys_base = mem->start;  in jz4740_i2s_dev_probe()
540 	i2s->clk_aic = devm_clk_get(dev, "aic");  in jz4740_i2s_dev_probe()
541 	if (IS_ERR(i2s->clk_aic))  in jz4740_i2s_dev_probe()
542 		return PTR_ERR(i2s->clk_aic);  in jz4740_i2s_dev_probe()
544 	i2s->clk_i2s = devm_clk_get(dev, "i2s");  in jz4740_i2s_dev_probe()
545 	if (IS_ERR(i2s->clk_i2s))  in jz4740_i2s_dev_probe()
546 		return PTR_ERR(i2s->clk_i2s);  in jz4740_i2s_dev_probe()
551 					      i2s->soc_info->dai, 1);  in jz4740_i2s_dev_probe()
562 		.name = "jz4740-i2s",
569 MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>");
572 MODULE_ALIAS("platform:jz4740-i2s");