1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2016-2017 HiSilicon Co., Ltd. http://www.hisilicon.com
20 #include <dt-bindings/phy/phy.h>
49 	struct histb_combphy_mode mode;  member
55 	void __iomem *reg = priv->mmio + COMBPHY_CFG_REG;  in nano_register_write()
73 static int is_mode_fixed(struct histb_combphy_mode *mode)  in is_mode_fixed()  argument
75 	return (mode->fixed != PHY_NONE) ? true : false;  in is_mode_fixed()
80 	struct histb_combphy_mode *mode = &priv->mode;  in histb_combphy_set_mode()  local
81 	struct regmap *syscon = priv->syscon;  in histb_combphy_set_mode()
84 	if (is_mode_fixed(mode))  in histb_combphy_set_mode()
87 	switch (mode->select) {  in histb_combphy_set_mode()
98 		return -EINVAL;  in histb_combphy_set_mode()
101 	return regmap_update_bits(syscon, mode->reg, mode->mask,  in histb_combphy_set_mode()
102 				  hw_sel << mode->shift);  in histb_combphy_set_mode()
116 	val = readl(priv->mmio + COMBPHY_CFG_REG);  in histb_combphy_init()
118 	writel(val, priv->mmio + COMBPHY_CFG_REG);  in histb_combphy_init()
120 	ret = clk_prepare_enable(priv->ref_clk);  in histb_combphy_init()
124 	reset_control_deassert(priv->por_rst);  in histb_combphy_init()
127 	val = readl(priv->mmio + COMBPHY_CFG_REG);  in histb_combphy_init()
129 	writel(val, priv->mmio + COMBPHY_CFG_REG);  in histb_combphy_init()
148 	val = readl(priv->mmio + COMBPHY_CFG_REG);  in histb_combphy_exit()
150 	writel(val, priv->mmio + COMBPHY_CFG_REG);  in histb_combphy_exit()
152 	reset_control_assert(priv->por_rst);  in histb_combphy_exit()
153 	clk_disable_unprepare(priv->ref_clk);  in histb_combphy_exit()
168 	struct histb_combphy_mode *mode = &priv->mode;  in histb_combphy_xlate()  local
170 	if (args->args_count < 1) {  in histb_combphy_xlate()
172 		return ERR_PTR(-EINVAL);  in histb_combphy_xlate()
175 	mode->select = args->args[0];  in histb_combphy_xlate()
177 	if (mode->select < PHY_TYPE_SATA || mode->select > PHY_TYPE_USB3) {  in histb_combphy_xlate()
178 		dev_err(dev, "invalid phy mode select argument\n");  in histb_combphy_xlate()
179 		return ERR_PTR(-EINVAL);  in histb_combphy_xlate()
182 	if (is_mode_fixed(mode) && mode->select != mode->fixed) {  in histb_combphy_xlate()
183 		dev_err(dev, "mode select %d mismatch fixed phy mode %d\n",  in histb_combphy_xlate()
184 			mode->select, mode->fixed);  in histb_combphy_xlate()
185 		return ERR_PTR(-EINVAL);  in histb_combphy_xlate()
188 	return priv->phy;  in histb_combphy_xlate()
194 	struct device *dev = &pdev->dev;  in histb_combphy_probe()
196 	struct device_node *np = dev->of_node;  in histb_combphy_probe()
197 	struct histb_combphy_mode *mode;  in histb_combphy_probe()  local
203 		return -ENOMEM;  in histb_combphy_probe()
205 	priv->mmio = devm_platform_ioremap_resource(pdev, 0);  in histb_combphy_probe()
206 	if (IS_ERR(priv->mmio)) {  in histb_combphy_probe()
207 		ret = PTR_ERR(priv->mmio);  in histb_combphy_probe()
211 	priv->syscon = syscon_node_to_regmap(np->parent);  in histb_combphy_probe()
212 	if (IS_ERR(priv->syscon)) {  in histb_combphy_probe()
214 		return PTR_ERR(priv->syscon);  in histb_combphy_probe()
217 	mode = &priv->mode;  in histb_combphy_probe()
218 	mode->fixed = PHY_NONE;  in histb_combphy_probe()
220 	ret = of_property_read_u32(np, "hisilicon,fixed-mode", &mode->fixed);  in histb_combphy_probe()
222 		dev_dbg(dev, "found fixed phy mode %d\n", mode->fixed);  in histb_combphy_probe()
224 	ret = of_property_read_u32_array(np, "hisilicon,mode-select-bits",  in histb_combphy_probe()
227 		if (is_mode_fixed(mode)) {  in histb_combphy_probe()
228 			dev_err(dev, "found select bits for fixed mode phy\n");  in histb_combphy_probe()
229 			return -EINVAL;  in histb_combphy_probe()
232 		mode->reg = vals[0];  in histb_combphy_probe()
233 		mode->shift = vals[1];  in histb_combphy_probe()
234 		mode->mask = vals[2];  in histb_combphy_probe()
235 		dev_dbg(dev, "found mode select bits\n");  in histb_combphy_probe()
237 		if (!is_mode_fixed(mode)) {  in histb_combphy_probe()
238 			dev_err(dev, "no valid select bits found for non-fixed phy\n");  in histb_combphy_probe()
239 			return -ENODEV;  in histb_combphy_probe()
243 	priv->ref_clk = devm_clk_get(dev, NULL);  in histb_combphy_probe()
244 	if (IS_ERR(priv->ref_clk)) {  in histb_combphy_probe()
246 		return PTR_ERR(priv->ref_clk);  in histb_combphy_probe()
249 	priv->por_rst = devm_reset_control_get(dev, NULL);  in histb_combphy_probe()
250 	if (IS_ERR(priv->por_rst)) {  in histb_combphy_probe()
252 		return PTR_ERR(priv->por_rst);  in histb_combphy_probe()
255 	priv->phy = devm_phy_create(dev, NULL, &histb_combphy_ops);  in histb_combphy_probe()
256 	if (IS_ERR(priv->phy)) {  in histb_combphy_probe()
258 		return PTR_ERR(priv->phy);  in histb_combphy_probe()
262 	phy_set_drvdata(priv->phy, priv);  in histb_combphy_probe()
269 	{ .compatible = "hisilicon,hi3798cv200-combphy" },