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