1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c
new file mode 100644
index 000000000..24bbcc850
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c
@@ -0,0 +1,72 @@
+// 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;
+}