1 // SPDX-License-Identifier: GPL-2.0-only
3  * Samsung Exynos SoC series Display Port PHY driver
17 #include <linux/phy/phy.h>
20 #include <linux/soc/samsung/exynos-regs-pmu.h>
31 static int exynos_dp_video_phy_power_on(struct phy *phy)  in exynos_dp_video_phy_power_on()  argument
33 	struct exynos_dp_video_phy *state = phy_get_drvdata(phy);  in exynos_dp_video_phy_power_on()
35 	/* Disable power isolation on DP-PHY */  in exynos_dp_video_phy_power_on()
36 	return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,  in exynos_dp_video_phy_power_on()
40 static int exynos_dp_video_phy_power_off(struct phy *phy)  in exynos_dp_video_phy_power_off()  argument
42 	struct exynos_dp_video_phy *state = phy_get_drvdata(phy);  in exynos_dp_video_phy_power_off()
44 	/* Enable power isolation on DP-PHY */  in exynos_dp_video_phy_power_off()
45 	return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,  in exynos_dp_video_phy_power_off()
65 		.compatible = "samsung,exynos5250-dp-video-phy",
68 		.compatible = "samsung,exynos5420-dp-video-phy",
78 	struct device *dev = &pdev->dev;  in exynos_dp_video_phy_probe()
80 	struct phy *phy;  in exynos_dp_video_phy_probe()  local
84 		return -ENOMEM;  in exynos_dp_video_phy_probe()
86 	state->regs = syscon_regmap_lookup_by_phandle(dev->of_node,  in exynos_dp_video_phy_probe()
87 						      "samsung,pmu-syscon");  in exynos_dp_video_phy_probe()
88 	if (IS_ERR(state->regs)) {  in exynos_dp_video_phy_probe()
90 		return PTR_ERR(state->regs);  in exynos_dp_video_phy_probe()
93 	state->drvdata = of_device_get_match_data(dev);  in exynos_dp_video_phy_probe()
95 	phy = devm_phy_create(dev, NULL, &exynos_dp_video_phy_ops);  in exynos_dp_video_phy_probe()
96 	if (IS_ERR(phy)) {  in exynos_dp_video_phy_probe()
97 		dev_err(dev, "failed to create Display Port PHY\n");  in exynos_dp_video_phy_probe()
98 		return PTR_ERR(phy);  in exynos_dp_video_phy_probe()
100 	phy_set_drvdata(phy, state);  in exynos_dp_video_phy_probe()
110 		.name	= "exynos-dp-video-phy",
118 MODULE_DESCRIPTION("Samsung Exynos SoC DP PHY driver");