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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2020-2022 Bootlin
* Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
*/
#include <linux/phy/phy.h>
#include <linux/regmap.h>
#include "sun8i_a83t_dphy.h"
#include "sun8i_a83t_mipi_csi2.h"
static int sun8i_a83t_dphy_configure(struct phy *dphy,
union phy_configure_opts *opts)
{
return phy_mipi_dphy_config_validate(&opts->mipi_dphy);
}
static int sun8i_a83t_dphy_power_on(struct phy *dphy)
{
struct sun8i_a83t_mipi_csi2_device *csi2_dev = phy_get_drvdata(dphy);
struct regmap *regmap = csi2_dev->regmap;
regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG,
SUN8I_A83T_DPHY_CTRL_RESET_N |
SUN8I_A83T_DPHY_CTRL_SHUTDOWN_N);
regmap_write(regmap, SUN8I_A83T_DPHY_ANA0_REG,
SUN8I_A83T_DPHY_ANA0_REXT_EN |
SUN8I_A83T_DPHY_ANA0_RINT(2) |
SUN8I_A83T_DPHY_ANA0_SNK(2));
return 0;
};
static int sun8i_a83t_dphy_power_off(struct phy *dphy)
{
struct sun8i_a83t_mipi_csi2_device *csi2_dev = phy_get_drvdata(dphy);
struct regmap *regmap = csi2_dev->regmap;
regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG, 0);
return 0;
};
static const struct phy_ops sun8i_a83t_dphy_ops = {
.configure = sun8i_a83t_dphy_configure,
.power_on = sun8i_a83t_dphy_power_on,
.power_off = sun8i_a83t_dphy_power_off,
};
int sun8i_a83t_dphy_register(struct sun8i_a83t_mipi_csi2_device *csi2_dev)
{
struct device *dev = csi2_dev->dev;
struct phy_provider *phy_provider;
csi2_dev->dphy = devm_phy_create(dev, NULL, &sun8i_a83t_dphy_ops);
if (IS_ERR(csi2_dev->dphy)) {
dev_err(dev, "failed to create D-PHY\n");
return PTR_ERR(csi2_dev->dphy);
}
phy_set_drvdata(csi2_dev->dphy, csi2_dev);
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
if (IS_ERR(phy_provider)) {
dev_err(dev, "failed to register D-PHY provider\n");
return PTR_ERR(phy_provider);
}
return 0;
}
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