1 // SPDX-License-Identifier: GPL-2.0
5 // Copyright (C) 2023-2024 Loongson Technology Corporation Limited
11 #include <linux/dma-mapping.h>
58 	struct snd_pcm_runtime *runtime = substream->runtime;  in loongson_pcm_open()
60 	if (substream->pcm->device & 1) {  in loongson_pcm_open()
61 		runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED;  in loongson_pcm_open()
62 		runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;  in loongson_pcm_open()
65 	if (substream->pcm->device & 2)  in loongson_pcm_open()
66 		runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP |  in loongson_pcm_open()
70 	 * playback samples are lost if the DMA count is not a multiple  in loongson_pcm_open()
71 	 * of the DMA burst size.  Let's add a rule to enforce that.  in loongson_pcm_open()
77 	snd_pcm_hw_constraint_integer(substream->runtime,  in loongson_pcm_open()
115 	struct device *dev = &pdev->dev;  in loongson_i2s_plat_probe()
123 		return -ENOMEM;  in loongson_i2s_plat_probe()
130 	i2s->reg_base = devm_ioremap_resource(&pdev->dev, res);  in loongson_i2s_plat_probe()
131 	if (IS_ERR(i2s->reg_base))  in loongson_i2s_plat_probe()
132 		return dev_err_probe(dev, PTR_ERR(i2s->reg_base),  in loongson_i2s_plat_probe()
135 	i2s->regmap = devm_regmap_init_mmio(dev, i2s->reg_base,  in loongson_i2s_plat_probe()
137 	if (IS_ERR(i2s->regmap))  in loongson_i2s_plat_probe()
138 		return dev_err_probe(dev, PTR_ERR(i2s->regmap),  in loongson_i2s_plat_probe()
141 	i2s->playback_dma_data.addr = res->start + LS_I2S_TX_DATA;  in loongson_i2s_plat_probe()
142 	i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;  in loongson_i2s_plat_probe()
143 	i2s->playback_dma_data.maxburst = 4;  in loongson_i2s_plat_probe()
145 	i2s->capture_dma_data.addr = res->start + LS_I2S_RX_DATA;  in loongson_i2s_plat_probe()
146 	i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;  in loongson_i2s_plat_probe()
147 	i2s->capture_dma_data.maxburst = 4;  in loongson_i2s_plat_probe()
152 	i2s->clk_rate = clk_get_rate(i2s_clk);  in loongson_i2s_plat_probe()
168 	{ .compatible = "loongson,ls2k1000-i2s" },
176 		.name = "loongson-i2s-plat",