4  * ALSA SoC Audio Layer - Rockchip I2S Controller driver
25 #define DRV_NAME "rockchip-i2s"
49  * I2S controller hopes to start the tx and rx together,
63 static int i2s_pinctrl_select_bclk_on(struct rk_i2s_dev *i2s)  in i2s_pinctrl_select_bclk_on()  argument
67 	if (!IS_ERR(i2s->pinctrl) && !IS_ERR_OR_NULL(i2s->bclk_on))  in i2s_pinctrl_select_bclk_on()
68 		ret = pinctrl_select_state(i2s->pinctrl, i2s->bclk_on);  in i2s_pinctrl_select_bclk_on()
71 		dev_err(i2s->dev, "bclk enable failed %d\n", ret);  in i2s_pinctrl_select_bclk_on()
76 static int i2s_pinctrl_select_bclk_off(struct rk_i2s_dev *i2s)  in i2s_pinctrl_select_bclk_off()  argument
81 	if (!IS_ERR(i2s->pinctrl) && !IS_ERR_OR_NULL(i2s->bclk_off))  in i2s_pinctrl_select_bclk_off()
82 		ret = pinctrl_select_state(i2s->pinctrl, i2s->bclk_off);  in i2s_pinctrl_select_bclk_off()
85 		dev_err(i2s->dev, "bclk disable failed %d\n", ret);  in i2s_pinctrl_select_bclk_off()
92 	struct rk_i2s_dev *i2s = dev_get_drvdata(dev);  in i2s_runtime_suspend()  local
94 	regcache_cache_only(i2s->regmap, true);  in i2s_runtime_suspend()
95 	clk_disable_unprepare(i2s->mclk);  in i2s_runtime_suspend()
102 	struct rk_i2s_dev *i2s = dev_get_drvdata(dev);  in i2s_runtime_resume()  local
105 	ret = clk_prepare_enable(i2s->mclk);  in i2s_runtime_resume()
107 		dev_err(i2s->dev, "clock enable failed %d\n", ret);  in i2s_runtime_resume()
111 	regcache_cache_only(i2s->regmap, false);  in i2s_runtime_resume()
112 	regcache_mark_dirty(i2s->regmap);  in i2s_runtime_resume()
114 	ret = regcache_sync(i2s->regmap);  in i2s_runtime_resume()
116 		clk_disable_unprepare(i2s->mclk);  in i2s_runtime_resume()
126 static int rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)  in rockchip_snd_txctrl()  argument
131 	spin_lock(&i2s->lock);  in rockchip_snd_txctrl()
133 		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,  in rockchip_snd_txctrl()
138 		ret = regmap_update_bits(i2s->regmap, I2S_XFER,  in rockchip_snd_txctrl()
143 		i2s->tx_start = true;  in rockchip_snd_txctrl()
145 		i2s->tx_start = false;  in rockchip_snd_txctrl()
147 		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,  in rockchip_snd_txctrl()
153 		if (!i2s->rx_start) {  in rockchip_snd_txctrl()
154 			ret = regmap_update_bits(i2s->regmap, I2S_XFER,  in rockchip_snd_txctrl()
160 			ret = regmap_update_bits(i2s->regmap, I2S_CLR,  in rockchip_snd_txctrl()
165 			ret = regmap_read_poll_timeout_atomic(i2s->regmap,  in rockchip_snd_txctrl()
172 				dev_warn(i2s->dev, "fail to clear: %d\n", ret);  in rockchip_snd_txctrl()
176 	spin_unlock(&i2s->lock);  in rockchip_snd_txctrl()
178 		dev_err(i2s->dev, "lrclk update failed\n");  in rockchip_snd_txctrl()
183 static int rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)  in rockchip_snd_rxctrl()  argument
188 	spin_lock(&i2s->lock);  in rockchip_snd_rxctrl()
190 		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,  in rockchip_snd_rxctrl()
196 		ret = regmap_update_bits(i2s->regmap, I2S_XFER,  in rockchip_snd_rxctrl()
201 		i2s->rx_start = true;  in rockchip_snd_rxctrl()
203 		i2s->rx_start = false;  in rockchip_snd_rxctrl()
205 		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,  in rockchip_snd_rxctrl()
211 		if (!i2s->tx_start) {  in rockchip_snd_rxctrl()
212 			ret = regmap_update_bits(i2s->regmap, I2S_XFER,  in rockchip_snd_rxctrl()
218 			ret = regmap_update_bits(i2s->regmap, I2S_CLR,  in rockchip_snd_rxctrl()
223 			ret = regmap_read_poll_timeout_atomic(i2s->regmap,  in rockchip_snd_rxctrl()
230 				dev_warn(i2s->dev, "fail to clear: %d\n", ret);  in rockchip_snd_rxctrl()
234 	spin_unlock(&i2s->lock);  in rockchip_snd_rxctrl()
236 		dev_err(i2s->dev, "lrclk update failed\n");  in rockchip_snd_rxctrl()
244 	struct rk_i2s_dev *i2s = to_info(cpu_dai);  in rockchip_i2s_set_fmt()  local
254 		i2s->is_master_mode = true;  in rockchip_i2s_set_fmt()
258 		i2s->is_master_mode = false;  in rockchip_i2s_set_fmt()
265 	regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);  in rockchip_i2s_set_fmt()
294 	regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);  in rockchip_i2s_set_fmt()
318 	regmap_update_bits(i2s->regmap, I2S_TXCR, mask, val);  in rockchip_i2s_set_fmt()
342 	regmap_update_bits(i2s->regmap, I2S_RXCR, mask, val);  in rockchip_i2s_set_fmt()
354 	struct rk_i2s_dev *i2s = to_info(dai);  in rockchip_i2s_hw_params()  local
359 	if (i2s->is_master_mode) {  in rockchip_i2s_hw_params()
360 		mclk_rate = clk_get_rate(i2s->mclk);  in rockchip_i2s_hw_params()
361 		bclk_rate = i2s->bclk_ratio * params_rate(params);  in rockchip_i2s_hw_params()
367 		regmap_update_bits(i2s->regmap, I2S_CKR,  in rockchip_i2s_hw_params()
371 		regmap_update_bits(i2s->regmap, I2S_CKR,  in rockchip_i2s_hw_params()
412 		dev_err(i2s->dev, "invalid channel: %d\n",  in rockchip_i2s_hw_params()
418 		regmap_update_bits(i2s->regmap, I2S_RXCR,  in rockchip_i2s_hw_params()
422 		regmap_update_bits(i2s->regmap, I2S_TXCR,  in rockchip_i2s_hw_params()
426 	if (!IS_ERR(i2s->grf) && i2s->pins) {  in rockchip_i2s_hw_params()
427 		regmap_read(i2s->regmap, I2S_TXCR, &val);  in rockchip_i2s_hw_params()
445 		val <<= i2s->pins->shift;  in rockchip_i2s_hw_params()
446 		val |= (I2S_IO_DIRECTION_MASK << i2s->pins->shift) << 16;  in rockchip_i2s_hw_params()
447 		regmap_write(i2s->grf, i2s->pins->reg_offset, val);  in rockchip_i2s_hw_params()
450 	regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_TDL_MASK,  in rockchip_i2s_hw_params()
452 	regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_RDL_MASK,  in rockchip_i2s_hw_params()
459 	regmap_update_bits(i2s->regmap, I2S_CKR,  in rockchip_i2s_hw_params()
468 	struct rk_i2s_dev *i2s = to_info(dai);  in rockchip_i2s_trigger()  local
476 			ret = rockchip_snd_rxctrl(i2s, 1);  in rockchip_i2s_trigger()
478 			ret = rockchip_snd_txctrl(i2s, 1);  in rockchip_i2s_trigger()
481 		i2s_pinctrl_select_bclk_on(i2s);  in rockchip_i2s_trigger()
487 			if (!i2s->tx_start)  in rockchip_i2s_trigger()
488 				i2s_pinctrl_select_bclk_off(i2s);  in rockchip_i2s_trigger()
489 			ret = rockchip_snd_rxctrl(i2s, 0);  in rockchip_i2s_trigger()
491 			if (!i2s->rx_start)  in rockchip_i2s_trigger()
492 				i2s_pinctrl_select_bclk_off(i2s);  in rockchip_i2s_trigger()
493 			ret = rockchip_snd_txctrl(i2s, 0);  in rockchip_i2s_trigger()
507 	struct rk_i2s_dev *i2s = to_info(dai);  in rockchip_i2s_set_bclk_ratio()  local
509 	i2s->bclk_ratio = ratio;  in rockchip_i2s_set_bclk_ratio()
517 	struct rk_i2s_dev *i2s = to_info(cpu_dai);  in rockchip_i2s_set_sysclk()  local
523 	ret = clk_set_rate(i2s->mclk, freq);  in rockchip_i2s_set_sysclk()
525 		dev_err(i2s->dev, "Fail to set mclk %d\n", ret);  in rockchip_i2s_set_sysclk()
532 	struct rk_i2s_dev *i2s = snd_soc_dai_get_drvdata(dai);  in rockchip_i2s_dai_probe()  local
535 		i2s->has_playback ? &i2s->playback_dma_data : NULL,  in rockchip_i2s_dai_probe()
536 		i2s->has_capture  ? &i2s->capture_dma_data  : NULL);  in rockchip_i2s_dai_probe()
649 	{ .compatible = "rockchip,px30-i2s", },
650 	{ .compatible = "rockchip,rk1808-i2s", },
651 	{ .compatible = "rockchip,rk3036-i2s", },
652 	{ .compatible = "rockchip,rk3066-i2s", },
653 	{ .compatible = "rockchip,rk3128-i2s", },
654 	{ .compatible = "rockchip,rk3188-i2s", },
655 	{ .compatible = "rockchip,rk3228-i2s", },
656 	{ .compatible = "rockchip,rk3288-i2s", },
657 	{ .compatible = "rockchip,rk3308-i2s", },
658 	{ .compatible = "rockchip,rk3328-i2s", },
659 	{ .compatible = "rockchip,rk3366-i2s", },
660 	{ .compatible = "rockchip,rk3368-i2s", },
661 	{ .compatible = "rockchip,rk3399-i2s", .data = &rk3399_i2s_pins },
662 	{ .compatible = "rockchip,rv1126-i2s", },
666 static int rockchip_i2s_init_dai(struct rk_i2s_dev *i2s, struct resource *res,  in rockchip_i2s_init_dai()  argument
669 	struct device_node *node = i2s->dev->of_node;  in rockchip_i2s_init_dai()
677 			i2s->has_playback = true;  in rockchip_i2s_init_dai()
679 			i2s->has_capture = true;  in rockchip_i2s_init_dai()
682 	dai = devm_kmemdup(i2s->dev, &rockchip_i2s_dai,  in rockchip_i2s_init_dai()
687 	if (i2s->has_playback) {  in rockchip_i2s_init_dai()
698 		i2s->playback_dma_data.addr = res->start + I2S_TXDR;  in rockchip_i2s_init_dai()
699 		i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;  in rockchip_i2s_init_dai()
700 		i2s->playback_dma_data.maxburst = 8;  in rockchip_i2s_init_dai()
708 	if (i2s->has_capture) {  in rockchip_i2s_init_dai()
719 		i2s->capture_dma_data.addr = res->start + I2S_RXDR;  in rockchip_i2s_init_dai()
720 		i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;  in rockchip_i2s_init_dai()
721 		i2s->capture_dma_data.maxburst = 8;  in rockchip_i2s_init_dai()
739 	struct rk_i2s_dev *i2s;  in rockchip_i2s_probe()  local
745 	i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL);  in rockchip_i2s_probe()
746 	if (!i2s)  in rockchip_i2s_probe()
749 	spin_lock_init(&i2s->lock);  in rockchip_i2s_probe()
750 	i2s->dev = &pdev->dev;  in rockchip_i2s_probe()
752 	i2s->grf = syscon_regmap_lookup_by_phandle(node, "rockchip,grf");  in rockchip_i2s_probe()
753 	if (!IS_ERR(i2s->grf)) {  in rockchip_i2s_probe()
758 		i2s->pins = of_id->data;  in rockchip_i2s_probe()
762 	i2s->hclk = devm_clk_get(&pdev->dev, "i2s_hclk");  in rockchip_i2s_probe()
763 	if (IS_ERR(i2s->hclk)) {  in rockchip_i2s_probe()
764 		dev_err(&pdev->dev, "Can't retrieve i2s bus clock\n");  in rockchip_i2s_probe()
765 		return PTR_ERR(i2s->hclk);  in rockchip_i2s_probe()
767 	ret = clk_prepare_enable(i2s->hclk);  in rockchip_i2s_probe()
769 		dev_err(i2s->dev, "hclock enable failed %d\n", ret);  in rockchip_i2s_probe()
773 	i2s->mclk = devm_clk_get(&pdev->dev, "i2s_clk");  in rockchip_i2s_probe()
774 	if (IS_ERR(i2s->mclk)) {  in rockchip_i2s_probe()
775 		dev_err(&pdev->dev, "Can't retrieve i2s master clock\n");  in rockchip_i2s_probe()
776 		ret = PTR_ERR(i2s->mclk);  in rockchip_i2s_probe()
786 	i2s->regmap = devm_regmap_init_mmio(&pdev->dev, regs,  in rockchip_i2s_probe()
788 	if (IS_ERR(i2s->regmap)) {  in rockchip_i2s_probe()
791 		ret = PTR_ERR(i2s->regmap);  in rockchip_i2s_probe()
795 	i2s->bclk_ratio = 64;  in rockchip_i2s_probe()
796 	i2s->pinctrl = devm_pinctrl_get(&pdev->dev);  in rockchip_i2s_probe()
797 	if (!IS_ERR(i2s->pinctrl)) {  in rockchip_i2s_probe()
798 		i2s->bclk_on = pinctrl_lookup_state(i2s->pinctrl, "bclk_on");  in rockchip_i2s_probe()
799 		if (!IS_ERR_OR_NULL(i2s->bclk_on)) {  in rockchip_i2s_probe()
800 			i2s->bclk_off = pinctrl_lookup_state(i2s->pinctrl, "bclk_off");  in rockchip_i2s_probe()
801 			if (IS_ERR_OR_NULL(i2s->bclk_off)) {  in rockchip_i2s_probe()
802 				dev_err(&pdev->dev, "failed to find i2s bclk_off\n");  in rockchip_i2s_probe()
808 		dev_dbg(&pdev->dev, "failed to find i2s pinctrl\n");  in rockchip_i2s_probe()
811 	i2s_pinctrl_select_bclk_off(i2s);  in rockchip_i2s_probe()
813 	dev_set_drvdata(&pdev->dev, i2s);  in rockchip_i2s_probe()
822 	ret = rockchip_i2s_init_dai(i2s, res, &dai);  in rockchip_i2s_probe()
849 	clk_disable_unprepare(i2s->hclk);  in rockchip_i2s_probe()
855 	struct rk_i2s_dev *i2s = dev_get_drvdata(&pdev->dev);  in rockchip_i2s_remove()  local
861 	clk_disable_unprepare(i2s->hclk);  in rockchip_i2s_remove()