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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Samsung Exynos SoC series Display Port PHY driver
4 *
5 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
6 * Author: Jingoo Han <jg1.han@samsung.com>
7 */
8
9#include <linux/err.h>
10#include <linux/io.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/mfd/syscon.h>
14#include <linux/of.h>
15#include <linux/of_address.h>
16#include <linux/of_device.h>
17#include <linux/phy/phy.h>
18#include <linux/platform_device.h>
19#include <linux/regmap.h>
20#include <linux/soc/samsung/exynos-regs-pmu.h>
21
22struct exynos_dp_video_phy_drvdata {
23 u32 phy_ctrl_offset;
24};
25
26struct exynos_dp_video_phy {
27 struct regmap *regs;
28 const struct exynos_dp_video_phy_drvdata *drvdata;
29};
30
31static int exynos_dp_video_phy_power_on(struct phy *phy)
32{
33 struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
34
35 /* Disable power isolation on DP-PHY */
36 return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
37 EXYNOS4_PHY_ENABLE, EXYNOS4_PHY_ENABLE);
38}
39
40static int exynos_dp_video_phy_power_off(struct phy *phy)
41{
42 struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
43
44 /* Enable power isolation on DP-PHY */
45 return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
46 EXYNOS4_PHY_ENABLE, 0);
47}
48
49static const struct phy_ops exynos_dp_video_phy_ops = {
50 .power_on = exynos_dp_video_phy_power_on,
51 .power_off = exynos_dp_video_phy_power_off,
52 .owner = THIS_MODULE,
53};
54
55static const struct exynos_dp_video_phy_drvdata exynos5250_dp_video_phy = {
56 .phy_ctrl_offset = EXYNOS5_DPTX_PHY_CONTROL,
57};
58
59static const struct exynos_dp_video_phy_drvdata exynos5420_dp_video_phy = {
60 .phy_ctrl_offset = EXYNOS5420_DPTX_PHY_CONTROL,
61};
62
63static const struct of_device_id exynos_dp_video_phy_of_match[] = {
64 {
65 .compatible = "samsung,exynos5250-dp-video-phy",
66 .data = &exynos5250_dp_video_phy,
67 }, {
68 .compatible = "samsung,exynos5420-dp-video-phy",
69 .data = &exynos5420_dp_video_phy,
70 },
71 { },
72};
73MODULE_DEVICE_TABLE(of, exynos_dp_video_phy_of_match);
74
75static int exynos_dp_video_phy_probe(struct platform_device *pdev)
76{
77 struct exynos_dp_video_phy *state;
78 struct device *dev = &pdev->dev;
79 struct phy_provider *phy_provider;
80 struct phy *phy;
81
82 state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
83 if (!state)
84 return -ENOMEM;
85
86 state->regs = syscon_regmap_lookup_by_phandle(dev->of_node,
87 "samsung,pmu-syscon");
88 if (IS_ERR(state->regs)) {
89 dev_err(dev, "Failed to lookup PMU regmap\n");
90 return PTR_ERR(state->regs);
91 }
92
93 state->drvdata = of_device_get_match_data(dev);
94
95 phy = devm_phy_create(dev, NULL, &exynos_dp_video_phy_ops);
96 if (IS_ERR(phy)) {
97 dev_err(dev, "failed to create Display Port PHY\n");
98 return PTR_ERR(phy);
99 }
100 phy_set_drvdata(phy, state);
101
102 phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
103
104 return PTR_ERR_OR_ZERO(phy_provider);
105}
106
107static struct platform_driver exynos_dp_video_phy_driver = {
108 .probe = exynos_dp_video_phy_probe,
109 .driver = {
110 .name = "exynos-dp-video-phy",
111 .of_match_table = exynos_dp_video_phy_of_match,
112 .suppress_bind_attrs = true,
113 }
114};
115module_platform_driver(exynos_dp_video_phy_driver);
116
117MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
118MODULE_DESCRIPTION("Samsung Exynos SoC DP PHY driver");
119MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Samsung Exynos SoC series Display Port PHY driver
4 *
5 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
6 * Author: Jingoo Han <jg1.han@samsung.com>
7 */
8
9#include <linux/err.h>
10#include <linux/io.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/mfd/syscon.h>
14#include <linux/of.h>
15#include <linux/of_address.h>
16#include <linux/of_device.h>
17#include <linux/phy/phy.h>
18#include <linux/platform_device.h>
19#include <linux/regmap.h>
20#include <linux/soc/samsung/exynos-regs-pmu.h>
21
22struct exynos_dp_video_phy_drvdata {
23 u32 phy_ctrl_offset;
24};
25
26struct exynos_dp_video_phy {
27 struct regmap *regs;
28 const struct exynos_dp_video_phy_drvdata *drvdata;
29};
30
31static int exynos_dp_video_phy_power_on(struct phy *phy)
32{
33 struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
34
35 /* Disable power isolation on DP-PHY */
36 return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
37 EXYNOS4_PHY_ENABLE, EXYNOS4_PHY_ENABLE);
38}
39
40static int exynos_dp_video_phy_power_off(struct phy *phy)
41{
42 struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
43
44 /* Enable power isolation on DP-PHY */
45 return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
46 EXYNOS4_PHY_ENABLE, 0);
47}
48
49static const struct phy_ops exynos_dp_video_phy_ops = {
50 .power_on = exynos_dp_video_phy_power_on,
51 .power_off = exynos_dp_video_phy_power_off,
52 .owner = THIS_MODULE,
53};
54
55static const struct exynos_dp_video_phy_drvdata exynos5250_dp_video_phy = {
56 .phy_ctrl_offset = EXYNOS5_DPTX_PHY_CONTROL,
57};
58
59static const struct exynos_dp_video_phy_drvdata exynos5420_dp_video_phy = {
60 .phy_ctrl_offset = EXYNOS5420_DPTX_PHY_CONTROL,
61};
62
63static const struct of_device_id exynos_dp_video_phy_of_match[] = {
64 {
65 .compatible = "samsung,exynos5250-dp-video-phy",
66 .data = &exynos5250_dp_video_phy,
67 }, {
68 .compatible = "samsung,exynos5420-dp-video-phy",
69 .data = &exynos5420_dp_video_phy,
70 },
71 { },
72};
73MODULE_DEVICE_TABLE(of, exynos_dp_video_phy_of_match);
74
75static int exynos_dp_video_phy_probe(struct platform_device *pdev)
76{
77 struct exynos_dp_video_phy *state;
78 struct device *dev = &pdev->dev;
79 struct phy_provider *phy_provider;
80 struct phy *phy;
81
82 state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
83 if (!state)
84 return -ENOMEM;
85
86 state->regs = syscon_regmap_lookup_by_phandle(dev->of_node,
87 "samsung,pmu-syscon");
88 if (IS_ERR(state->regs)) {
89 dev_err(dev, "Failed to lookup PMU regmap\n");
90 return PTR_ERR(state->regs);
91 }
92
93 state->drvdata = of_device_get_match_data(dev);
94
95 phy = devm_phy_create(dev, NULL, &exynos_dp_video_phy_ops);
96 if (IS_ERR(phy)) {
97 dev_err(dev, "failed to create Display Port PHY\n");
98 return PTR_ERR(phy);
99 }
100 phy_set_drvdata(phy, state);
101
102 phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
103
104 return PTR_ERR_OR_ZERO(phy_provider);
105}
106
107static struct platform_driver exynos_dp_video_phy_driver = {
108 .probe = exynos_dp_video_phy_probe,
109 .driver = {
110 .name = "exynos-dp-video-phy",
111 .of_match_table = exynos_dp_video_phy_of_match,
112 .suppress_bind_attrs = true,
113 }
114};
115module_platform_driver(exynos_dp_video_phy_driver);
116
117MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
118MODULE_DESCRIPTION("Samsung Exynos SoC DP PHY driver");
119MODULE_LICENSE("GPL v2");