1 // SPDX-License-Identifier: GPL-2.0-only
5  * lpass-cdc-dma.c -- ALSA SoC CDC DMA CPU DAI driver for QTi LPASS
8 #include <dt-bindings/sound/qcom,lpass.h>
13 #include <sound/soc-dai.h>
15 #include "lpass-lpaif-reg.h"
16 #include "lpass.h"
39 	struct snd_pcm_runtime *rt = substream->runtime;  in __lpass_get_dmactl_handle()
40 	struct lpass_pcm_data *pcm_data = rt->private_data;  in __lpass_get_dmactl_handle()
41 	const struct lpass_variant *v = drvdata->variant;  in __lpass_get_dmactl_handle()
42 	unsigned int dai_id = cpu_dai->driver->id;  in __lpass_get_dmactl_handle()
46 		*dmactl = drvdata->rxtx_rd_dmactl;  in __lpass_get_dmactl_handle()
47 		*id = pcm_data->dma_ch;  in __lpass_get_dmactl_handle()
50 		*dmactl = drvdata->rxtx_wr_dmactl;  in __lpass_get_dmactl_handle()
51 		*id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;  in __lpass_get_dmactl_handle()
54 		*dmactl = drvdata->va_wr_dmactl;  in __lpass_get_dmactl_handle()
55 		*id = pcm_data->dma_ch - v->va_wrdma_channel_start;  in __lpass_get_dmactl_handle()
58 		dev_err(soc_runtime->dev, "invalid dai id for dma ctl: %d\n", dai_id);  in __lpass_get_dmactl_handle()
117 		ret = -EINVAL;  in __lpass_get_codec_dma_intf_type()
129 	struct device *dev = soc_runtime->dev;  in __lpass_platform_codec_intf_init()
131 	unsigned int dai_id = cpu_dai->driver->id;  in __lpass_platform_codec_intf_init()
141 		return -EINVAL;  in __lpass_platform_codec_intf_init()
143 	ret = regmap_fields_write(dmactl->codec_intf, id, codec_intf);  in __lpass_platform_codec_intf_init()
148 	ret = regmap_fields_write(dmactl->codec_fs_sel, id, 0x0);  in __lpass_platform_codec_intf_init()
153 	ret = regmap_fields_write(dmactl->codec_fs_delay, id, 0x0);  in __lpass_platform_codec_intf_init()
158 	ret = regmap_fields_write(dmactl->codec_pack, id, 0x1);  in __lpass_platform_codec_intf_init()
163 	ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_ON);  in __lpass_platform_codec_intf_init()
177 	switch (dai->id) {  in lpass_cdc_dma_daiops_startup()
180 		clk_set_rate(drvdata->codec_mem0, CODEC_MEM_HZ_NORMAL);  in lpass_cdc_dma_daiops_startup()
181 		clk_prepare_enable(drvdata->codec_mem0);  in lpass_cdc_dma_daiops_startup()
184 		clk_set_rate(drvdata->va_mem0, CODEC_MEM_HZ_NORMAL);  in lpass_cdc_dma_daiops_startup()
185 		clk_prepare_enable(drvdata->va_mem0);  in lpass_cdc_dma_daiops_startup()
188 		dev_err(soc_runtime->dev, "%s: invalid  interface: %d\n", __func__, dai->id);  in lpass_cdc_dma_daiops_startup()
200 	switch (dai->id) {  in lpass_cdc_dma_daiops_shutdown()
203 		clk_disable_unprepare(drvdata->codec_mem0);  in lpass_cdc_dma_daiops_shutdown()
206 		clk_disable_unprepare(drvdata->va_mem0);  in lpass_cdc_dma_daiops_shutdown()
209 		dev_err(soc_runtime->dev, "%s: invalid  interface: %d\n", __func__, dai->id);  in lpass_cdc_dma_daiops_shutdown()
241 		dev_err(soc_runtime->dev, "invalid PCM config\n");  in lpass_cdc_dma_daiops_hw_params()
242 		return -EINVAL;  in lpass_cdc_dma_daiops_hw_params()
247 		return -EINVAL;  in lpass_cdc_dma_daiops_hw_params()
249 	ret = regmap_fields_write(dmactl->codec_channel, id, regval);  in lpass_cdc_dma_daiops_hw_params()
251 		dev_err(soc_runtime->dev,  in lpass_cdc_dma_daiops_hw_params()
276 			return -EINVAL;  in lpass_cdc_dma_daiops_trigger()
278 		ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_OFF);  in lpass_cdc_dma_daiops_trigger()
280 			dev_err(soc_runtime->dev,  in lpass_cdc_dma_daiops_trigger()
286 		ret = -EINVAL;  in lpass_cdc_dma_daiops_trigger()
287 		dev_err(soc_runtime->dev, "%s: invalid %d interface\n", __func__, cmd);  in lpass_cdc_dma_daiops_trigger()
301 MODULE_DESCRIPTION("QTi LPASS CDC DMA Driver");