1 // SPDX-License-Identifier: GPL-2.0
13 #include <linux/dma-mapping.h>
34 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in loongson_i2s_trigger()
35 			regmap_update_bits(i2s->regmap, LS_I2S_CTRL,  in loongson_i2s_trigger()
39 			regmap_update_bits(i2s->regmap, LS_I2S_CTRL,  in loongson_i2s_trigger()
46 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in loongson_i2s_trigger()
47 			regmap_update_bits(i2s->regmap, LS_I2S_CTRL,  in loongson_i2s_trigger()
50 			regmap_update_bits(i2s->regmap, LS_I2S_CTRL,  in loongson_i2s_trigger()
54 		ret = -EINVAL;  in loongson_i2s_trigger()
65 	u32 clk_rate = i2s->clk_rate;  in loongson_i2s_hw_params()
66 	u32 sysclk = i2s->sysclk;  in loongson_i2s_hw_params()
69 	u32 fs = params_rate(params);  in loongson_i2s_hw_params()  local
74 	switch (i2s->rev_id) {  in loongson_i2s_hw_params()
77 					       (bits * chans * fs * 2)) - 1;  in loongson_i2s_hw_params()
78 		mclk_ratio = DIV_ROUND_CLOSEST(clk_rate, (sysclk * 2)) - 1;  in loongson_i2s_hw_params()
85 		regmap_write(i2s->regmap, LS_I2S_CFG, val);  in loongson_i2s_hw_params()
90 					       (bits * chans * fs * 2)) - 1;  in loongson_i2s_hw_params()
93 						    sysclk) - (mclk_ratio << 16);  in loongson_i2s_hw_params()
95 		regmap_read(i2s->regmap, LS_I2S_CFG, &val);  in loongson_i2s_hw_params()
98 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in loongson_i2s_hw_params()
102 		regmap_write(i2s->regmap, LS_I2S_CFG, val);  in loongson_i2s_hw_params()
105 		regmap_write(i2s->regmap, LS_I2S_CFG1, val);  in loongson_i2s_hw_params()
109 		dev_err(i2s->dev, "I2S revision invalid\n");  in loongson_i2s_hw_params()
110 		return -EINVAL;  in loongson_i2s_hw_params()
121 	i2s->sysclk = freq;  in loongson_i2s_set_dai_sysclk()
136 		regmap_update_bits(i2s->regmap, LS_I2S_CTRL, I2S_CTRL_MSB,  in loongson_i2s_set_fmt()
140 		return -EINVAL;  in loongson_i2s_set_fmt()
149 		regmap_update_bits(i2s->regmap, LS_I2S_CTRL, I2S_CTRL_MASTER,  in loongson_i2s_set_fmt()
151 		if (i2s->rev_id == 1) {  in loongson_i2s_set_fmt()
152 			ret = regmap_read_poll_timeout_atomic(i2s->regmap,  in loongson_i2s_set_fmt()
157 				dev_warn(dai->dev, "wait BCLK ready timeout\n");  in loongson_i2s_set_fmt()
161 		/* Enable MCLK */  in loongson_i2s_set_fmt()
162 		if (i2s->rev_id == 1) {  in loongson_i2s_set_fmt()
163 			regmap_update_bits(i2s->regmap, LS_I2S_CTRL,  in loongson_i2s_set_fmt()
166 			ret = regmap_read_poll_timeout_atomic(i2s->regmap,  in loongson_i2s_set_fmt()
171 				dev_warn(dai->dev, "wait MCLK ready timeout\n");  in loongson_i2s_set_fmt()
175 		/* Enable MCLK */  in loongson_i2s_set_fmt()
176 		if (i2s->rev_id == 1) {  in loongson_i2s_set_fmt()
177 			regmap_update_bits(i2s->regmap, LS_I2S_CTRL,  in loongson_i2s_set_fmt()
180 			ret = regmap_read_poll_timeout_atomic(i2s->regmap,  in loongson_i2s_set_fmt()
185 				dev_warn(dai->dev, "wait MCLK ready timeout\n");  in loongson_i2s_set_fmt()
189 		regmap_update_bits(i2s->regmap, LS_I2S_CTRL, I2S_CTRL_MASTER,  in loongson_i2s_set_fmt()
191 		if (i2s->rev_id == 1) {  in loongson_i2s_set_fmt()
192 			ret = regmap_read_poll_timeout_atomic(i2s->regmap,  in loongson_i2s_set_fmt()
197 				dev_warn(dai->dev, "wait BCLK ready timeout\n");  in loongson_i2s_set_fmt()
201 		return -EINVAL;  in loongson_i2s_set_fmt()
209 	struct loongson_i2s *i2s = dev_get_drvdata(cpu_dai->dev);  in loongson_i2s_dai_probe()
211 	snd_soc_dai_init_dma_data(cpu_dai, &i2s->playback_dma_data,  in loongson_i2s_dai_probe()
212 				  &i2s->capture_dma_data);  in loongson_i2s_dai_probe()
227 	.name = "loongson-i2s",
229 		.stream_name = "CPU-Playback",
236 		.stream_name = "CPU-Capture",
250 	regcache_cache_only(i2s->regmap, true);  in i2s_suspend()
260 	regcache_cache_only(i2s->regmap, false);  in i2s_resume()
261 	regcache_mark_dirty(i2s->regmap);  in i2s_resume()
262 	ret = regcache_sync(i2s->regmap);  in i2s_resume()