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"
16 #include "lpass.h"
115 	struct lpass_variant *v = drvdata->variant;  in sc7280_lpass_alloc_dma_channel()
121 			chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
122 						   v->rdma_channels);  in sc7280_lpass_alloc_dma_channel()
124 			if (chan >= v->rdma_channels)  in sc7280_lpass_alloc_dma_channel()
125 				return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
127 			chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
128 						  v->wrdma_channel_start +  in sc7280_lpass_alloc_dma_channel()
129 						  v->wrdma_channels,  in sc7280_lpass_alloc_dma_channel()
130 						  v->wrdma_channel_start);  in sc7280_lpass_alloc_dma_channel()
132 			if (chan >= v->wrdma_channel_start + v->wrdma_channels)  in sc7280_lpass_alloc_dma_channel()
133 				return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
135 		set_bit(chan, &drvdata->dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
138 		chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
139 					   v->hdmi_rdma_channels);  in sc7280_lpass_alloc_dma_channel()
140 		if (chan >= v->hdmi_rdma_channels)  in sc7280_lpass_alloc_dma_channel()
141 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
142 		set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
145 		chan = find_first_zero_bit(&drvdata->rxtx_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
146 					   v->rxtx_rdma_channels);  in sc7280_lpass_alloc_dma_channel()
147 		if (chan >= v->rxtx_rdma_channels)  in sc7280_lpass_alloc_dma_channel()
148 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
151 		chan = find_next_zero_bit(&drvdata->rxtx_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
152 					  v->rxtx_wrdma_channel_start +  in sc7280_lpass_alloc_dma_channel()
153 					  v->rxtx_wrdma_channels,  in sc7280_lpass_alloc_dma_channel()
154 					  v->rxtx_wrdma_channel_start);  in sc7280_lpass_alloc_dma_channel()
155 		if (chan >= v->rxtx_wrdma_channel_start + v->rxtx_wrdma_channels)  in sc7280_lpass_alloc_dma_channel()
156 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
157 		set_bit(chan, &drvdata->rxtx_dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
160 		chan = find_next_zero_bit(&drvdata->va_dma_ch_bit_map,  in sc7280_lpass_alloc_dma_channel()
161 					  v->va_wrdma_channel_start +  in sc7280_lpass_alloc_dma_channel()
162 					  v->va_wrdma_channels,  in sc7280_lpass_alloc_dma_channel()
163 					  v->va_wrdma_channel_start);  in sc7280_lpass_alloc_dma_channel()
164 		if (chan >= v->va_wrdma_channel_start + v->va_wrdma_channels)  in sc7280_lpass_alloc_dma_channel()
165 			return -EBUSY;  in sc7280_lpass_alloc_dma_channel()
166 		set_bit(chan, &drvdata->va_dma_ch_bit_map);  in sc7280_lpass_alloc_dma_channel()
179 		clear_bit(chan, &drvdata->dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
182 		clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
186 		clear_bit(chan, &drvdata->rxtx_dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
189 		clear_bit(chan, &drvdata->va_dma_ch_bit_map);  in sc7280_lpass_free_dma_channel()
201 	struct lpass_variant *variant = drvdata->variant;  in sc7280_lpass_init()
202 	struct device *dev = &pdev->dev;  in sc7280_lpass_init()
205 	drvdata->clks = devm_kcalloc(dev, variant->num_clks,  in sc7280_lpass_init()
206 				     sizeof(*drvdata->clks), GFP_KERNEL);  in sc7280_lpass_init()
207 	if (!drvdata->clks)  in sc7280_lpass_init()
208 		return -ENOMEM;  in sc7280_lpass_init()
210 	drvdata->num_clks = variant->num_clks;  in sc7280_lpass_init()
212 	for (i = 0; i < drvdata->num_clks; i++)  in sc7280_lpass_init()
213 		drvdata->clks[i].id = variant->clk_name[i];  in sc7280_lpass_init()
215 	ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);  in sc7280_lpass_init()
221 	ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);  in sc7280_lpass_init()
234 	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);  in sc7280_lpass_exit()
420 	{.compatible = "qcom,sc7280-lpass-cpu", .data = &sc7280_data},
427 		.name = "sc7280-lpass-cpu",
437 MODULE_DESCRIPTION("SC7280 LPASS CPU DRIVER");