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1// SPDX-License-Identifier: GPL-2.0+2/*3 * Copyright 2020-2022 Bootlin4 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>5 */6 7#include <linux/phy/phy.h>8#include <linux/regmap.h>9 10#include "sun8i_a83t_dphy.h"11#include "sun8i_a83t_mipi_csi2.h"12 13static int sun8i_a83t_dphy_configure(struct phy *dphy,14 union phy_configure_opts *opts)15{16 return phy_mipi_dphy_config_validate(&opts->mipi_dphy);17}18 19static int sun8i_a83t_dphy_power_on(struct phy *dphy)20{21 struct sun8i_a83t_mipi_csi2_device *csi2_dev = phy_get_drvdata(dphy);22 struct regmap *regmap = csi2_dev->regmap;23 24 regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG,25 SUN8I_A83T_DPHY_CTRL_RESET_N |26 SUN8I_A83T_DPHY_CTRL_SHUTDOWN_N);27 28 regmap_write(regmap, SUN8I_A83T_DPHY_ANA0_REG,29 SUN8I_A83T_DPHY_ANA0_REXT_EN |30 SUN8I_A83T_DPHY_ANA0_RINT(2) |31 SUN8I_A83T_DPHY_ANA0_SNK(2));32 33 return 0;34};35 36static int sun8i_a83t_dphy_power_off(struct phy *dphy)37{38 struct sun8i_a83t_mipi_csi2_device *csi2_dev = phy_get_drvdata(dphy);39 struct regmap *regmap = csi2_dev->regmap;40 41 regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG, 0);42 43 return 0;44};45 46static const struct phy_ops sun8i_a83t_dphy_ops = {47 .configure = sun8i_a83t_dphy_configure,48 .power_on = sun8i_a83t_dphy_power_on,49 .power_off = sun8i_a83t_dphy_power_off,50};51 52int sun8i_a83t_dphy_register(struct sun8i_a83t_mipi_csi2_device *csi2_dev)53{54 struct device *dev = csi2_dev->dev;55 struct phy_provider *phy_provider;56 57 csi2_dev->dphy = devm_phy_create(dev, NULL, &sun8i_a83t_dphy_ops);58 if (IS_ERR(csi2_dev->dphy)) {59 dev_err(dev, "failed to create D-PHY\n");60 return PTR_ERR(csi2_dev->dphy);61 }62 63 phy_set_drvdata(csi2_dev->dphy, csi2_dev);64 65 phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);66 if (IS_ERR(phy_provider)) {67 dev_err(dev, "failed to register D-PHY provider\n");68 return PTR_ERR(phy_provider);69 }70 71 return 0;72}73