1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
5  * lpass-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS
19 #include <sound/soc-dai.h>
21 #include <dt-bindings/sound/apq8016-lpass.h>
22 #include "lpass-lpaif-reg.h"
23 #include "lpass.h"
126 	const struct lpass_variant *v = drvdata->variant;  in apq8016_lpass_alloc_dma_channel()
130 		chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,  in apq8016_lpass_alloc_dma_channel()
131 					v->rdma_channels);  in apq8016_lpass_alloc_dma_channel()
133 		if (chan >= v->rdma_channels)  in apq8016_lpass_alloc_dma_channel()
134 			return -EBUSY;  in apq8016_lpass_alloc_dma_channel()
136 		chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,  in apq8016_lpass_alloc_dma_channel()
137 					v->wrdma_channel_start +  in apq8016_lpass_alloc_dma_channel()
138 					v->wrdma_channels,  in apq8016_lpass_alloc_dma_channel()
139 					v->wrdma_channel_start);  in apq8016_lpass_alloc_dma_channel()
141 		if (chan >=  v->wrdma_channel_start + v->wrdma_channels)  in apq8016_lpass_alloc_dma_channel()
142 			return -EBUSY;  in apq8016_lpass_alloc_dma_channel()
145 	set_bit(chan, &drvdata->dma_ch_bit_map);  in apq8016_lpass_alloc_dma_channel()
152 	clear_bit(chan, &drvdata->dma_ch_bit_map);  in apq8016_lpass_free_dma_channel()
160 	const struct lpass_variant *variant = drvdata->variant;  in apq8016_lpass_init()
161 	struct device *dev = &pdev->dev;  in apq8016_lpass_init()
165 	drvdata->clks = devm_kcalloc(dev, variant->num_clks,  in apq8016_lpass_init()
166 				     sizeof(*drvdata->clks), GFP_KERNEL);  in apq8016_lpass_init()
167 	if (!drvdata->clks)  in apq8016_lpass_init()
168 		return -ENOMEM;  in apq8016_lpass_init()
169 	drvdata->num_clks = variant->num_clks;  in apq8016_lpass_init()
171 	for (i = 0; i < drvdata->num_clks; i++)  in apq8016_lpass_init()
172 		drvdata->clks[i].id = variant->clk_name[i];  in apq8016_lpass_init()
174 	ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);  in apq8016_lpass_init()
180 	ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);  in apq8016_lpass_init()
186 	drvdata->ahbix_clk = devm_clk_get(dev, "ahbix-clk");  in apq8016_lpass_init()
187 	if (IS_ERR(drvdata->ahbix_clk)) {  in apq8016_lpass_init()
188 		dev_err(dev, "error getting ahbix-clk: %ld\n",  in apq8016_lpass_init()
189 				PTR_ERR(drvdata->ahbix_clk));  in apq8016_lpass_init()
190 		ret = PTR_ERR(drvdata->ahbix_clk);  in apq8016_lpass_init()
194 	ret = clk_set_rate(drvdata->ahbix_clk, LPASS_AHBIX_CLOCK_FREQUENCY);  in apq8016_lpass_init()
200 			clk_get_rate(drvdata->ahbix_clk));  in apq8016_lpass_init()
202 	ret = clk_prepare_enable(drvdata->ahbix_clk);  in apq8016_lpass_init()
211 	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);  in apq8016_lpass_init()
219 	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);  in apq8016_lpass_exit()
220 	clk_disable_unprepare(drvdata->ahbix_clk);  in apq8016_lpass_exit()
266 				   "pcnoc-mport-clk",
267 				   "pcnoc-sway-clk",
273 				"mi2s-osr-clk0",
274 				"mi2s-osr-clk1",
275 				"mi2s-osr-clk2",
276 				"mi2s-osr-clk3",
279 				"mi2s-bit-clk0",
280 				"mi2s-bit-clk1",
281 				"mi2s-bit-clk2",
282 				"mi2s-bit-clk3",
291 	{ .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data },
292 	{ .compatible = "qcom,apq8016-lpass-cpu", .data = &apq8016_data },
299 		.name		= "apq8016-lpass-cpu",
307 MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver");