7559e7572c
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/phy/phy-can-transceiver.c Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Link: https://lore.kernel.org/r/20230714174841.4061919-1-robh@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Samsung Exynos SoC series Display Port PHY driver
|
|
*
|
|
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
|
|
* Author: Jingoo Han <jg1.han@samsung.com>
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/io.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mfd/syscon.h>
|
|
#include <linux/of.h>
|
|
#include <linux/phy/phy.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/soc/samsung/exynos-regs-pmu.h>
|
|
|
|
struct exynos_dp_video_phy_drvdata {
|
|
u32 phy_ctrl_offset;
|
|
};
|
|
|
|
struct exynos_dp_video_phy {
|
|
struct regmap *regs;
|
|
const struct exynos_dp_video_phy_drvdata *drvdata;
|
|
};
|
|
|
|
static int exynos_dp_video_phy_power_on(struct phy *phy)
|
|
{
|
|
struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
|
|
|
|
/* Disable power isolation on DP-PHY */
|
|
return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
|
|
EXYNOS4_PHY_ENABLE, EXYNOS4_PHY_ENABLE);
|
|
}
|
|
|
|
static int exynos_dp_video_phy_power_off(struct phy *phy)
|
|
{
|
|
struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
|
|
|
|
/* Enable power isolation on DP-PHY */
|
|
return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
|
|
EXYNOS4_PHY_ENABLE, 0);
|
|
}
|
|
|
|
static const struct phy_ops exynos_dp_video_phy_ops = {
|
|
.power_on = exynos_dp_video_phy_power_on,
|
|
.power_off = exynos_dp_video_phy_power_off,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct exynos_dp_video_phy_drvdata exynos5250_dp_video_phy = {
|
|
.phy_ctrl_offset = EXYNOS5_DPTX_PHY_CONTROL,
|
|
};
|
|
|
|
static const struct exynos_dp_video_phy_drvdata exynos5420_dp_video_phy = {
|
|
.phy_ctrl_offset = EXYNOS5420_DPTX_PHY_CONTROL,
|
|
};
|
|
|
|
static const struct of_device_id exynos_dp_video_phy_of_match[] = {
|
|
{
|
|
.compatible = "samsung,exynos5250-dp-video-phy",
|
|
.data = &exynos5250_dp_video_phy,
|
|
}, {
|
|
.compatible = "samsung,exynos5420-dp-video-phy",
|
|
.data = &exynos5420_dp_video_phy,
|
|
},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, exynos_dp_video_phy_of_match);
|
|
|
|
static int exynos_dp_video_phy_probe(struct platform_device *pdev)
|
|
{
|
|
struct exynos_dp_video_phy *state;
|
|
struct device *dev = &pdev->dev;
|
|
struct phy_provider *phy_provider;
|
|
struct phy *phy;
|
|
|
|
state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
|
|
if (!state)
|
|
return -ENOMEM;
|
|
|
|
state->regs = syscon_node_to_regmap(dev->parent->of_node);
|
|
if (IS_ERR(state->regs))
|
|
/* Backwards compatible way */
|
|
state->regs = syscon_regmap_lookup_by_phandle(dev->of_node,
|
|
"samsung,pmu-syscon");
|
|
if (IS_ERR(state->regs)) {
|
|
dev_err(dev, "Failed to lookup PMU regmap\n");
|
|
return PTR_ERR(state->regs);
|
|
}
|
|
|
|
state->drvdata = of_device_get_match_data(dev);
|
|
|
|
phy = devm_phy_create(dev, NULL, &exynos_dp_video_phy_ops);
|
|
if (IS_ERR(phy)) {
|
|
dev_err(dev, "failed to create Display Port PHY\n");
|
|
return PTR_ERR(phy);
|
|
}
|
|
phy_set_drvdata(phy, state);
|
|
|
|
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
|
|
|
|
return PTR_ERR_OR_ZERO(phy_provider);
|
|
}
|
|
|
|
static struct platform_driver exynos_dp_video_phy_driver = {
|
|
.probe = exynos_dp_video_phy_probe,
|
|
.driver = {
|
|
.name = "exynos-dp-video-phy",
|
|
.of_match_table = exynos_dp_video_phy_of_match,
|
|
.suppress_bind_attrs = true,
|
|
}
|
|
};
|
|
module_platform_driver(exynos_dp_video_phy_driver);
|
|
|
|
MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
|
|
MODULE_DESCRIPTION("Samsung Exynos SoC DP PHY driver");
|
|
MODULE_LICENSE("GPL v2");
|