1 // SPDX-License-Identifier: GPL-2.0-only
5  * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
16 #include <dt-bindings/sound/sc7180-lpass.h>
20 #include "lpass-lpaif-reg.h"
26 		.name = "Primary MI2S",
49 		.name = "Secondary MI2S",
79 	const struct lpass_variant *v = drvdata->variant;  in sc7180_lpass_alloc_dma_channel()
84 			chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,  in sc7180_lpass_alloc_dma_channel()
85 						v->hdmi_rdma_channels);  in sc7180_lpass_alloc_dma_channel()
87 			if (chan >= v->hdmi_rdma_channels)  in sc7180_lpass_alloc_dma_channel()
88 				return -EBUSY;  in sc7180_lpass_alloc_dma_channel()
90 		set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);  in sc7180_lpass_alloc_dma_channel()
93 			chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,  in sc7180_lpass_alloc_dma_channel()
94 						v->rdma_channels);  in sc7180_lpass_alloc_dma_channel()
96 			if (chan >= v->rdma_channels)  in sc7180_lpass_alloc_dma_channel()
97 				return -EBUSY;  in sc7180_lpass_alloc_dma_channel()
99 			chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,  in sc7180_lpass_alloc_dma_channel()
100 					v->wrdma_channel_start +  in sc7180_lpass_alloc_dma_channel()
101 					v->wrdma_channels,  in sc7180_lpass_alloc_dma_channel()
102 					v->wrdma_channel_start);  in sc7180_lpass_alloc_dma_channel()
104 			if (chan >=  v->wrdma_channel_start + v->wrdma_channels)  in sc7180_lpass_alloc_dma_channel()
105 				return -EBUSY;  in sc7180_lpass_alloc_dma_channel()
108 		set_bit(chan, &drvdata->dma_ch_bit_map);  in sc7180_lpass_alloc_dma_channel()
116 		clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);  in sc7180_lpass_free_dma_channel()
118 		clear_bit(chan, &drvdata->dma_ch_bit_map);  in sc7180_lpass_free_dma_channel()
126 	const struct lpass_variant *variant = drvdata->variant;  in sc7180_lpass_init()
127 	struct device *dev = &pdev->dev;  in sc7180_lpass_init()
130 	drvdata->clks = devm_kcalloc(dev, variant->num_clks,  in sc7180_lpass_init()
131 				     sizeof(*drvdata->clks), GFP_KERNEL);  in sc7180_lpass_init()
132 	if (!drvdata->clks)  in sc7180_lpass_init()
133 		return -ENOMEM;  in sc7180_lpass_init()
135 	drvdata->num_clks = variant->num_clks;  in sc7180_lpass_init()
137 	for (i = 0; i < drvdata->num_clks; i++)  in sc7180_lpass_init()
138 		drvdata->clks[i].id = variant->clk_name[i];  in sc7180_lpass_init()
140 	ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);  in sc7180_lpass_init()
146 	ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);  in sc7180_lpass_init()
159 	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);  in sc7180_lpass_exit()
167 	return clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);  in sc7180_lpass_dev_resume()
174 	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);  in sc7180_lpass_dev_suspend()
284 				   "pcnoc-sway-clk",
285 				   "audio-core",
286 				   "pcnoc-mport-clk",
296 				   "mi2s-bit-clk0",
297 				   "mi2s-bit-clk1",
306 	{.compatible = "qcom,sc7180-lpass-cpu", .data = &sc7180_data},
313 		.name = "sc7180-lpass-cpu",