1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
15 #include <linux/clk.h>
18 #include <linux/dma-mapping.h>
27 #include "jz4740-i2s.h"
107 	struct clk *clk_aic;
108 	struct clk *clk_i2s;
119 	return readl(i2s->base + reg);  in jz4740_i2s_read()
125 	writel(value, i2s->base + reg);  in jz4740_i2s_write()
140 	uint32_t conf;  in jz4740_i2s_startup()  local
148 	if (!i2s->soc_info->shared_fifo_flush) {  in jz4740_i2s_startup()
149 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in jz4740_i2s_startup()
164 	if (i2s->soc_info->shared_fifo_flush)  in jz4740_i2s_startup()
167 	ret = clk_prepare_enable(i2s->clk_i2s);  in jz4740_i2s_startup()
171 	conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);  in jz4740_i2s_startup()
172 	conf |= JZ_AIC_CONF_ENABLE;  in jz4740_i2s_startup()
173 	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);  in jz4740_i2s_startup()
182 	uint32_t conf;  in jz4740_i2s_shutdown()  local
187 	conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);  in jz4740_i2s_shutdown()
188 	conf &= ~JZ_AIC_CONF_ENABLE;  in jz4740_i2s_shutdown()
189 	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);  in jz4740_i2s_shutdown()
191 	clk_disable_unprepare(i2s->clk_i2s);  in jz4740_i2s_shutdown()
202 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in jz4740_i2s_trigger()
221 		return -EINVAL;  in jz4740_i2s_trigger()
234 	uint32_t conf;  in jz4740_i2s_set_fmt()  local
236 	conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);  in jz4740_i2s_set_fmt()
238 	conf &= ~(JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER);  in jz4740_i2s_set_fmt()
242 		conf |= JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER;  in jz4740_i2s_set_fmt()
246 		conf |= JZ_AIC_CONF_SYNC_CLK_MASTER;  in jz4740_i2s_set_fmt()
249 		conf |= JZ_AIC_CONF_BIT_CLK_MASTER;  in jz4740_i2s_set_fmt()
254 		return -EINVAL;  in jz4740_i2s_set_fmt()
264 		return -EINVAL;  in jz4740_i2s_set_fmt()
271 		return -EINVAL;  in jz4740_i2s_set_fmt()
274 	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);  in jz4740_i2s_set_fmt()
291 	div = clk_get_rate(i2s->clk_i2s) / (64 * params_rate(params));  in jz4740_i2s_hw_params()
301 		return -EINVAL;  in jz4740_i2s_hw_params()
304 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {  in jz4740_i2s_hw_params()
313 		div_reg |= (div - 1) << I2SDIV_DV_SHIFT;  in jz4740_i2s_hw_params()
318 		if (i2s->soc_info->version >= JZ_I2S_JZ4770) {  in jz4740_i2s_hw_params()
320 			div_reg |= (div - 1) << I2SDIV_IDV_SHIFT;  in jz4740_i2s_hw_params()
323 			div_reg |= (div - 1) << I2SDIV_DV_SHIFT;  in jz4740_i2s_hw_params()
337 	struct clk *parent;  in jz4740_i2s_set_sysclk()
345 		clk_set_parent(i2s->clk_i2s, parent);  in jz4740_i2s_set_sysclk()
351 		clk_set_parent(i2s->clk_i2s, parent);  in jz4740_i2s_set_sysclk()
352 		ret = clk_set_rate(i2s->clk_i2s, freq);  in jz4740_i2s_set_sysclk()
355 		return -EINVAL;  in jz4740_i2s_set_sysclk()
365 	uint32_t conf;  in jz4740_i2s_suspend()  local
368 		conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);  in jz4740_i2s_suspend()
369 		conf &= ~JZ_AIC_CONF_ENABLE;  in jz4740_i2s_suspend()
370 		jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);  in jz4740_i2s_suspend()
372 		clk_disable_unprepare(i2s->clk_i2s);  in jz4740_i2s_suspend()
375 	clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_suspend()
383 	uint32_t conf;  in jz4740_i2s_resume()  local
386 	ret = clk_prepare_enable(i2s->clk_aic);  in jz4740_i2s_resume()
391 		ret = clk_prepare_enable(i2s->clk_i2s);  in jz4740_i2s_resume()
393 			clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_resume()
397 		conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);  in jz4740_i2s_resume()
398 		conf |= JZ_AIC_CONF_ENABLE;  in jz4740_i2s_resume()
399 		jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);  in jz4740_i2s_resume()
410 	dma_data = &i2s->playback_dma_data;  in jz4740_i2c_init_pcm_config()
411 	dma_data->maxburst = 16;  in jz4740_i2c_init_pcm_config()
412 	dma_data->slave_id = JZ4740_DMA_TYPE_AIC_TRANSMIT;  in jz4740_i2c_init_pcm_config()
413 	dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO;  in jz4740_i2c_init_pcm_config()
416 	dma_data = &i2s->capture_dma_data;  in jz4740_i2c_init_pcm_config()
417 	dma_data->maxburst = 16;  in jz4740_i2c_init_pcm_config()
418 	dma_data->slave_id = JZ4740_DMA_TYPE_AIC_RECEIVE;  in jz4740_i2c_init_pcm_config()
419 	dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO;  in jz4740_i2c_init_pcm_config()
425 	uint32_t conf;  in jz4740_i2s_dai_probe()  local
428 	ret = clk_prepare_enable(i2s->clk_aic);  in jz4740_i2s_dai_probe()
433 	snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data,  in jz4740_i2s_dai_probe()
434 		&i2s->capture_dma_data);  in jz4740_i2s_dai_probe()
436 	if (i2s->soc_info->version >= JZ_I2S_JZ4760) {  in jz4740_i2s_dai_probe()
437 		conf = (7 << JZ4760_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |  in jz4740_i2s_dai_probe()
443 		conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |  in jz4740_i2s_dai_probe()
451 	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);  in jz4740_i2s_dai_probe()
460 	clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_dai_remove()
535 	.name		= "jz4740-i2s",
541 	{ .compatible = "ingenic,jz4740-i2s", .data = &jz4740_i2s_soc_info },
542 	{ .compatible = "ingenic,jz4760-i2s", .data = &jz4760_i2s_soc_info },
543 	{ .compatible = "ingenic,jz4770-i2s", .data = &jz4770_i2s_soc_info },
544 	{ .compatible = "ingenic,jz4780-i2s", .data = &jz4780_i2s_soc_info },
551 	struct device *dev = &pdev->dev;  in jz4740_i2s_dev_probe()
558 		return -ENOMEM;  in jz4740_i2s_dev_probe()
560 	i2s->soc_info = device_get_match_data(dev);  in jz4740_i2s_dev_probe()
563 	i2s->base = devm_ioremap_resource(dev, mem);  in jz4740_i2s_dev_probe()
564 	if (IS_ERR(i2s->base))  in jz4740_i2s_dev_probe()
565 		return PTR_ERR(i2s->base);  in jz4740_i2s_dev_probe()
567 	i2s->phys_base = mem->start;  in jz4740_i2s_dev_probe()
569 	i2s->clk_aic = devm_clk_get(dev, "aic");  in jz4740_i2s_dev_probe()
570 	if (IS_ERR(i2s->clk_aic))  in jz4740_i2s_dev_probe()
571 		return PTR_ERR(i2s->clk_aic);  in jz4740_i2s_dev_probe()
573 	i2s->clk_i2s = devm_clk_get(dev, "i2s");  in jz4740_i2s_dev_probe()
574 	if (IS_ERR(i2s->clk_i2s))  in jz4740_i2s_dev_probe()
575 		return PTR_ERR(i2s->clk_i2s);  in jz4740_i2s_dev_probe()
580 					      i2s->soc_info->dai, 1);  in jz4740_i2s_dev_probe()
591 		.name = "jz4740-i2s",
598 MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>");
601 MODULE_ALIAS("platform:jz4740-i2s");