regulator: rzg2l-usbphy: Add new driver
Add a new regulator driver to control the USB VBUS supply on the Renesas
RZ/G2L and related SoCs.
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
diff --git a/drivers/power/regulator/rzg2l-usbphy-regulator.c b/drivers/power/regulator/rzg2l-usbphy-regulator.c
new file mode 100644
index 0000000..451f04c
--- /dev/null
+++ b/drivers/power/regulator/rzg2l-usbphy-regulator.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2024 Renesas Electronics Corporation
+ */
+
+#include <asm/io.h>
+#include <dm.h>
+#include <power/regulator.h>
+#include <renesas/rzg2l-usbphy.h>
+
+#define VBENCTL 0x03c
+#define VBENCTL_VBUS_SEL BIT(0)
+
+static int rzg2l_usbphy_regulator_set_enable(struct udevice *dev, bool enable)
+{
+ struct rzg2l_usbphy_ctrl_priv *priv = dev_get_priv(dev->parent);
+
+ if (enable)
+ clrbits_le32(priv->regs + VBENCTL, VBENCTL_VBUS_SEL);
+ else
+ setbits_le32(priv->regs + VBENCTL, VBENCTL_VBUS_SEL);
+
+ return 0;
+}
+
+static int rzg2l_usbphy_regulator_get_enable(struct udevice *dev)
+{
+ struct rzg2l_usbphy_ctrl_priv *priv = dev_get_priv(dev->parent);
+
+ return !!readl(priv->regs + VBENCTL) & VBENCTL_VBUS_SEL;
+}
+
+static const struct dm_regulator_ops rzg2l_usbphy_regulator_ops = {
+ .get_enable = rzg2l_usbphy_regulator_get_enable,
+ .set_enable = rzg2l_usbphy_regulator_set_enable,
+};
+
+U_BOOT_DRIVER(rzg2l_usbphy_regulator) = {
+ .name = "rzg2l_usbphy_regulator",
+ .id = UCLASS_REGULATOR,
+ .ops = &rzg2l_usbphy_regulator_ops,
+};