1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
5  * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
13 #include <dt-bindings/sound/sc7180-lpass.h>
15 #include "lpass-lpaif-reg.h"
31 		.capture = {
32 			.stream_name = "Primary Capture",
72 			.stream_name = "WCD Playback",
84 		.capture = {
85 			.stream_name = "WCD Capture",
97 		.capture = {
98 			.stream_name = "DMIC Capture",
113 	const struct lpass_variant *v = drvdata->variant;  in sc7280_lpass_alloc_dma_channel()
119 			chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
120 						   v->rdma_channels);  in sc7280_lpass_alloc_dma_channel()
122 			if (chan >= v->rdma_channels)  in sc7280_lpass_alloc_dma_channel()
123 				return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
125 			chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
126 						  v->wrdma_channel_start +  in sc7280_lpass_alloc_dma_channel()
127 						  v->wrdma_channels,  in sc7280_lpass_alloc_dma_channel()
128 						  v->wrdma_channel_start);  in sc7280_lpass_alloc_dma_channel()
130 			if (chan >= v->wrdma_channel_start + v->wrdma_channels)  in sc7280_lpass_alloc_dma_channel()
131 				return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
133 		set_bit(chan, &drvdata->dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
136 		chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
137 					   v->hdmi_rdma_channels);  in sc7280_lpass_alloc_dma_channel()
138 		if (chan >= v->hdmi_rdma_channels)  in sc7280_lpass_alloc_dma_channel()
139 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
140 		set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
143 		chan = find_first_zero_bit(&drvdata->rxtx_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
144 					   v->rxtx_rdma_channels);  in sc7280_lpass_alloc_dma_channel()
145 		if (chan >= v->rxtx_rdma_channels)  in sc7280_lpass_alloc_dma_channel()
146 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
149 		chan = find_next_zero_bit(&drvdata->rxtx_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
150 					  v->rxtx_wrdma_channel_start +  in sc7280_lpass_alloc_dma_channel()
151 					  v->rxtx_wrdma_channels,  in sc7280_lpass_alloc_dma_channel()
152 					  v->rxtx_wrdma_channel_start);  in sc7280_lpass_alloc_dma_channel()
153 		if (chan >= v->rxtx_wrdma_channel_start + v->rxtx_wrdma_channels)  in sc7280_lpass_alloc_dma_channel()
154 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
155 		set_bit(chan, &drvdata->rxtx_dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
158 		chan = find_next_zero_bit(&drvdata->va_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
159 					  v->va_wrdma_channel_start +  in sc7280_lpass_alloc_dma_channel()
160 					  v->va_wrdma_channels,  in sc7280_lpass_alloc_dma_channel()
161 					  v->va_wrdma_channel_start);  in sc7280_lpass_alloc_dma_channel()
162 		if (chan >= v->va_wrdma_channel_start + v->va_wrdma_channels)  in sc7280_lpass_alloc_dma_channel()
163 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
164 		set_bit(chan, &drvdata->va_dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
177 		clear_bit(chan, &drvdata->dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
180 		clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
184 		clear_bit(chan, &drvdata->rxtx_dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
187 		clear_bit(chan, &drvdata->va_dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
199 	const struct lpass_variant *variant = drvdata->variant;  in sc7280_lpass_init()
200 	struct device *dev = &pdev->dev;  in sc7280_lpass_init()
203 	drvdata->clks = devm_kcalloc(dev, variant->num_clks,  in sc7280_lpass_init()
204 				     sizeof(*drvdata->clks), GFP_KERNEL);  in sc7280_lpass_init()
205 	if (!drvdata->clks)  in sc7280_lpass_init()
206 		return -ENOMEM;  in sc7280_lpass_init()
208 	drvdata->num_clks = variant->num_clks;  in sc7280_lpass_init()
210 	for (i = 0; i < drvdata->num_clks; i++)  in sc7280_lpass_init()
211 		drvdata->clks[i].id = variant->clk_name[i];  in sc7280_lpass_init()
213 	ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);  in sc7280_lpass_init()
219 	ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);  in sc7280_lpass_init()
232 	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);  in sc7280_lpass_exit()
240 	return clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);  in sc7280_lpass_dev_resume()
247 	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);  in sc7280_lpass_dev_suspend()
436 	{.compatible = "qcom,sc7280-lpass-cpu", .data = &sc7280_data},
443 		.name = "sc7280-lpass-cpu",