1 // SPDX-License-Identifier: GPL-2.0
3  * Lochnagar clock control
5  * Copyright (c) 2017-2018 Cirrus Logic, Inc. and
11 #include <linux/clk-provider.h>
22 #include <dt-bindings/clock/lochnagar.h>
49 	LN_PARENT("ln-none"),
50 	LN_PARENT("ln-spdif-mclk"),
51 	LN_PARENT("ln-psia1-mclk"),
52 	LN_PARENT("ln-psia2-mclk"),
53 	LN_PARENT("ln-cdc-clkout"),
54 	LN_PARENT("ln-dsp-clkout"),
55 	LN_PARENT("ln-pmic-32k"),
56 	LN_PARENT("ln-gf-mclk1"),
57 	LN_PARENT("ln-gf-mclk3"),
58 	LN_PARENT("ln-gf-mclk2"),
59 	LN_PARENT("ln-gf-mclk4"),
63 	LN_PARENT("ln-none"),
64 	LN_PARENT("ln-cdc-clkout"),
65 	LN_PARENT("ln-dsp-clkout"),
66 	LN_PARENT("ln-pmic-32k"),
67 	LN_PARENT("ln-spdif-mclk"),
68 	LN_PARENT("ln-clk-12m"),
69 	LN_PARENT("ln-clk-11m"),
70 	LN_PARENT("ln-clk-24m"),
71 	LN_PARENT("ln-clk-22m"),
72 	LN_PARENT("ln-clk-8m"),
73 	LN_PARENT("ln-usb-clk-24m"),
74 	LN_PARENT("ln-gf-mclk1"),
75 	LN_PARENT("ln-gf-mclk3"),
76 	LN_PARENT("ln-gf-mclk2"),
77 	LN_PARENT("ln-psia1-mclk"),
78 	LN_PARENT("ln-psia2-mclk"),
79 	LN_PARENT("ln-spdif-clkout"),
80 	LN_PARENT("ln-adat-mclk"),
81 	LN_PARENT("ln-usb-clk-12m"),
103 	LN1_CLK(CDC_MCLK1,      "ln-cdc-mclk1",  CDC_AIF_CTRL2),
104 	LN1_CLK(CDC_MCLK2,      "ln-cdc-mclk2",  CDC_AIF_CTRL2),
105 	LN1_CLK(DSP_CLKIN,      "ln-dsp-clkin",  DSP_AIF),
106 	LN1_CLK(GF_CLKOUT1,     "ln-gf-clkout1", GF_AIF1),
110 	LN2_CLK(CDC_MCLK1,      "ln-cdc-mclk1"),
111 	LN2_CLK(CDC_MCLK2,      "ln-cdc-mclk2"),
112 	LN2_CLK(DSP_CLKIN,      "ln-dsp-clkin"),
113 	LN2_CLK(GF_CLKOUT1,     "ln-gf-clkout1"),
114 	LN2_CLK(GF_CLKOUT2,     "ln-gf-clkout2"),
115 	LN2_CLK(PSIA1_MCLK,     "ln-psia1-mclk"),
116 	LN2_CLK(PSIA2_MCLK,     "ln-psia2-mclk"),
117 	LN2_CLK(SPDIF_MCLK,     "ln-spdif-mclk"),
118 	LN2_CLK(ADAT_MCLK,      "ln-adat-mclk"),
119 	LN2_CLK(SOUNDCARD_MCLK, "ln-soundcard-mclk"),
148 	struct lochnagar_clk_priv *priv = lclk->priv;  in lochnagar_clk_prepare()
149 	struct regmap *regmap = priv->regmap;  in lochnagar_clk_prepare()
152 	ret = regmap_update_bits(regmap, lclk->cfg_reg,  in lochnagar_clk_prepare()
153 				 lclk->ena_mask, lclk->ena_mask);  in lochnagar_clk_prepare()
155 		dev_dbg(priv->dev, "Failed to prepare %s: %d\n",  in lochnagar_clk_prepare()
156 			lclk->name, ret);  in lochnagar_clk_prepare()
164 	struct lochnagar_clk_priv *priv = lclk->priv;  in lochnagar_clk_unprepare()
165 	struct regmap *regmap = priv->regmap;  in lochnagar_clk_unprepare()
168 	ret = regmap_update_bits(regmap, lclk->cfg_reg, lclk->ena_mask, 0);  in lochnagar_clk_unprepare()
170 		dev_dbg(priv->dev, "Failed to unprepare %s: %d\n",  in lochnagar_clk_unprepare()
171 			lclk->name, ret);  in lochnagar_clk_unprepare()
177 	struct lochnagar_clk_priv *priv = lclk->priv;  in lochnagar_clk_set_parent()
178 	struct regmap *regmap = priv->regmap;  in lochnagar_clk_set_parent()
181 	ret = regmap_update_bits(regmap, lclk->src_reg, lclk->src_mask, index);  in lochnagar_clk_set_parent()
183 		dev_dbg(priv->dev, "Failed to reparent %s: %d\n",  in lochnagar_clk_set_parent()
184 			lclk->name, ret);  in lochnagar_clk_set_parent()
192 	struct lochnagar_clk_priv *priv = lclk->priv;  in lochnagar_clk_get_parent()
193 	struct regmap *regmap = priv->regmap;  in lochnagar_clk_get_parent()
197 	ret = regmap_read(regmap, lclk->src_reg, &val);  in lochnagar_clk_get_parent()
199 		dev_dbg(priv->dev, "Failed to read parent of %s: %d\n",  in lochnagar_clk_get_parent()
200 			lclk->name, ret);  in lochnagar_clk_get_parent()
204 	val &= lclk->src_mask;  in lochnagar_clk_get_parent()
221 	unsigned int idx = clkspec->args[0];  in lochnagar_of_clk_hw_get()
223 	if (idx >= ARRAY_SIZE(priv->lclks)) {  in lochnagar_of_clk_hw_get()
224 		dev_err(priv->dev, "Invalid index %u\n", idx);  in lochnagar_of_clk_hw_get()
225 		return ERR_PTR(-EINVAL);  in lochnagar_of_clk_hw_get()
228 	return &priv->lclks[idx].hw;  in lochnagar_of_clk_hw_get()
232 	{ .compatible = "cirrus,lochnagar1-clk", .data = &lochnagar1_conf },
233 	{ .compatible = "cirrus,lochnagar2-clk", .data = &lochnagar2_conf },
243 	struct device *dev = &pdev->dev;  in lochnagar_clk_probe()
251 		return -ENOMEM;  in lochnagar_clk_probe()
253 	priv->dev = dev;  in lochnagar_clk_probe()
254 	priv->regmap = dev_get_regmap(dev->parent, NULL);  in lochnagar_clk_probe()
257 	memcpy(priv->lclks, conf->clks, sizeof(priv->lclks));  in lochnagar_clk_probe()
259 	clk_init.parent_data = conf->parents;  in lochnagar_clk_probe()
260 	clk_init.num_parents = conf->nparents;  in lochnagar_clk_probe()
262 	for (i = 0; i < ARRAY_SIZE(priv->lclks); i++) {  in lochnagar_clk_probe()
263 		lclk = &priv->lclks[i];  in lochnagar_clk_probe()
265 		if (!lclk->name)  in lochnagar_clk_probe()
268 		clk_init.name = lclk->name;  in lochnagar_clk_probe()
270 		lclk->priv = priv;  in lochnagar_clk_probe()
271 		lclk->hw.init = &clk_init;  in lochnagar_clk_probe()
273 		ret = devm_clk_hw_register(dev, &lclk->hw);  in lochnagar_clk_probe()
276 				lclk->name, ret);  in lochnagar_clk_probe()
290 		.name = "lochnagar-clk",
298 MODULE_DESCRIPTION("Clock driver for Cirrus Logic Lochnagar Board");