1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
9 #include <linux/dma-mapping.h>
105 	if (!i2s->soc_info->shared_fifo_flush) {  in jz4740_i2s_startup()
106 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in jz4740_i2s_startup()
107 			regmap_set_bits(i2s->regmap, JZ_REG_AIC_CTRL, JZ_AIC_CTRL_TFLUSH);  in jz4740_i2s_startup()
109 			regmap_set_bits(i2s->regmap, JZ_REG_AIC_CTRL, JZ_AIC_CTRL_RFLUSH);  in jz4740_i2s_startup()
121 	if (i2s->soc_info->shared_fifo_flush)  in jz4740_i2s_startup()
122 		regmap_set_bits(i2s->regmap, JZ_REG_AIC_CTRL, JZ_AIC_CTRL_TFLUSH);  in jz4740_i2s_startup()
124 	ret = clk_prepare_enable(i2s->clk_i2s);  in jz4740_i2s_startup()
128 	regmap_set_bits(i2s->regmap, JZ_REG_AIC_CONF, JZ_AIC_CONF_ENABLE);  in jz4740_i2s_startup()
140 	regmap_clear_bits(i2s->regmap, JZ_REG_AIC_CONF, JZ_AIC_CONF_ENABLE);  in jz4740_i2s_shutdown()
142 	clk_disable_unprepare(i2s->clk_i2s);  in jz4740_i2s_shutdown()
151 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in jz4740_i2s_trigger()
160 		regmap_set_bits(i2s->regmap, JZ_REG_AIC_CTRL, mask);  in jz4740_i2s_trigger()
165 		regmap_clear_bits(i2s->regmap, JZ_REG_AIC_CTRL, mask);  in jz4740_i2s_trigger()
168 		return -EINVAL;  in jz4740_i2s_trigger()
195 		return -EINVAL;  in jz4740_i2s_set_fmt()
205 		return -EINVAL;  in jz4740_i2s_set_fmt()
212 		return -EINVAL;  in jz4740_i2s_set_fmt()
215 	regmap_update_bits(i2s->regmap, JZ_REG_AIC_CONF, conf_mask, conf);  in jz4740_i2s_set_fmt()
216 	regmap_write(i2s->regmap, JZ_REG_AIC_I2S_FMT, format);  in jz4740_i2s_set_fmt()
233 	err1 = abs(rate1 - rate);  in jz4740_i2s_get_i2sdiv()
234 	err2 = abs(rate2 - rate);  in jz4740_i2s_get_i2sdiv()
248 	return -EINVAL;  in jz4740_i2s_get_i2sdiv()
261 	regmap_read(i2s->regmap, JZ_REG_AIC_CTRL, &ctrl);  in jz4740_i2s_hw_params()
262 	regmap_read(i2s->regmap, JZ_REG_AIC_CONF, &conf);  in jz4740_i2s_hw_params()
278 		return -EINVAL;  in jz4740_i2s_hw_params()
281 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {  in jz4740_i2s_hw_params()
290 		div_field = i2s->field_i2sdiv_playback;  in jz4740_i2s_hw_params()
291 		i2sdiv_max = GENMASK(i2s->soc_info->field_i2sdiv_playback.msb,  in jz4740_i2s_hw_params()
292 				     i2s->soc_info->field_i2sdiv_playback.lsb);  in jz4740_i2s_hw_params()
297 		div_field = i2s->field_i2sdiv_capture;  in jz4740_i2s_hw_params()
298 		i2sdiv_max = GENMASK(i2s->soc_info->field_i2sdiv_capture.msb,  in jz4740_i2s_hw_params()
299 				     i2s->soc_info->field_i2sdiv_capture.lsb);  in jz4740_i2s_hw_params()
304 	 * If the codec is supplying both clocks then the divider output is  in jz4740_i2s_hw_params()
308 		div = jz4740_i2s_get_i2sdiv(clk_get_rate(i2s->clk_i2s),  in jz4740_i2s_hw_params()
314 	regmap_write(i2s->regmap, JZ_REG_AIC_CTRL, ctrl);  in jz4740_i2s_hw_params()
315 	regmap_field_write(div_field, div - 1);  in jz4740_i2s_hw_params()
324 	snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data,  in jz4740_i2s_dai_probe()
325 		&i2s->capture_dma_data);  in jz4740_i2s_dai_probe()
423 		regmap_clear_bits(i2s->regmap, JZ_REG_AIC_CONF, JZ_AIC_CONF_ENABLE);  in jz4740_i2s_suspend()
424 		clk_disable_unprepare(i2s->clk_i2s);  in jz4740_i2s_suspend()
427 	clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_suspend()
437 	ret = clk_prepare_enable(i2s->clk_aic);  in jz4740_i2s_resume()
442 		ret = clk_prepare_enable(i2s->clk_i2s);  in jz4740_i2s_resume()
444 			clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_resume()
448 		regmap_set_bits(i2s->regmap, JZ_REG_AIC_CONF, JZ_AIC_CONF_ENABLE);  in jz4740_i2s_resume()
459 	ret = clk_prepare_enable(i2s->clk_aic);  in jz4740_i2s_probe()
463 	regmap_write(i2s->regmap, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET);  in jz4740_i2s_probe()
465 	regmap_write(i2s->regmap, JZ_REG_AIC_CONF,  in jz4740_i2s_probe()
469 	regmap_field_write(i2s->field_rx_fifo_thresh, 7);  in jz4740_i2s_probe()
470 	regmap_field_write(i2s->field_tx_fifo_thresh, 8);  in jz4740_i2s_probe()
479 	clk_disable_unprepare(i2s->clk_aic);  in jz4740_i2s_remove()
483 	.name			= "jz4740-i2s",
492 	{ .compatible = "ingenic,jz4740-i2s", .data = &jz4740_i2s_soc_info },
493 	{ .compatible = "ingenic,jz4760-i2s", .data = &jz4760_i2s_soc_info },
494 	{ .compatible = "ingenic,jz4770-i2s", .data = &jz4770_i2s_soc_info },
495 	{ .compatible = "ingenic,jz4780-i2s", .data = &jz4780_i2s_soc_info },
496 	{ .compatible = "ingenic,x1000-i2s", .data = &x1000_i2s_soc_info },
504 	i2s->field_rx_fifo_thresh =  in jz4740_i2s_init_regmap_fields()
505 		devm_regmap_field_alloc(dev, i2s->regmap,  in jz4740_i2s_init_regmap_fields()
506 					i2s->soc_info->field_rx_fifo_thresh);  in jz4740_i2s_init_regmap_fields()
507 	if (IS_ERR(i2s->field_rx_fifo_thresh))  in jz4740_i2s_init_regmap_fields()
508 		return PTR_ERR(i2s->field_rx_fifo_thresh);  in jz4740_i2s_init_regmap_fields()
510 	i2s->field_tx_fifo_thresh =  in jz4740_i2s_init_regmap_fields()
511 		devm_regmap_field_alloc(dev, i2s->regmap,  in jz4740_i2s_init_regmap_fields()
512 					i2s->soc_info->field_tx_fifo_thresh);  in jz4740_i2s_init_regmap_fields()
513 	if (IS_ERR(i2s->field_tx_fifo_thresh))  in jz4740_i2s_init_regmap_fields()
514 		return PTR_ERR(i2s->field_tx_fifo_thresh);  in jz4740_i2s_init_regmap_fields()
516 	i2s->field_i2sdiv_capture =  in jz4740_i2s_init_regmap_fields()
517 		devm_regmap_field_alloc(dev, i2s->regmap,  in jz4740_i2s_init_regmap_fields()
518 					i2s->soc_info->field_i2sdiv_capture);  in jz4740_i2s_init_regmap_fields()
519 	if (IS_ERR(i2s->field_i2sdiv_capture))  in jz4740_i2s_init_regmap_fields()
520 		return PTR_ERR(i2s->field_i2sdiv_capture);  in jz4740_i2s_init_regmap_fields()
522 	i2s->field_i2sdiv_playback =  in jz4740_i2s_init_regmap_fields()
523 		devm_regmap_field_alloc(dev, i2s->regmap,  in jz4740_i2s_init_regmap_fields()
524 					i2s->soc_info->field_i2sdiv_playback);  in jz4740_i2s_init_regmap_fields()
525 	if (IS_ERR(i2s->field_i2sdiv_playback))  in jz4740_i2s_init_regmap_fields()
526 		return PTR_ERR(i2s->field_i2sdiv_playback);  in jz4740_i2s_init_regmap_fields()
540 	struct device *dev = &pdev->dev;  in jz4740_i2s_dev_probe()
548 		return -ENOMEM;  in jz4740_i2s_dev_probe()
550 	i2s->soc_info = device_get_match_data(dev);  in jz4740_i2s_dev_probe()
556 	i2s->playback_dma_data.maxburst = 16;  in jz4740_i2s_dev_probe()
557 	i2s->playback_dma_data.addr = mem->start + JZ_REG_AIC_FIFO;  in jz4740_i2s_dev_probe()
559 	i2s->capture_dma_data.maxburst = 16;  in jz4740_i2s_dev_probe()
560 	i2s->capture_dma_data.addr = mem->start + JZ_REG_AIC_FIFO;  in jz4740_i2s_dev_probe()
562 	i2s->clk_aic = devm_clk_get(dev, "aic");  in jz4740_i2s_dev_probe()
563 	if (IS_ERR(i2s->clk_aic))  in jz4740_i2s_dev_probe()
564 		return PTR_ERR(i2s->clk_aic);  in jz4740_i2s_dev_probe()
566 	i2s->clk_i2s = devm_clk_get(dev, "i2s");  in jz4740_i2s_dev_probe()
567 	if (IS_ERR(i2s->clk_i2s))  in jz4740_i2s_dev_probe()
568 		return PTR_ERR(i2s->clk_i2s);  in jz4740_i2s_dev_probe()
570 	i2s->regmap = devm_regmap_init_mmio(&pdev->dev, regs,  in jz4740_i2s_dev_probe()
572 	if (IS_ERR(i2s->regmap))  in jz4740_i2s_dev_probe()
573 		return PTR_ERR(i2s->regmap);  in jz4740_i2s_dev_probe()
582 					      i2s->soc_info->dai, 1);  in jz4740_i2s_dev_probe()
593 		.name = "jz4740-i2s",
600 MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>");
601 MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver");
603 MODULE_ALIAS("platform:jz4740-i2s");