112 lines
3.4 KiB
Diff
112 lines
3.4 KiB
Diff
From 25434a394705d2de92c50981e31347db4074204a Mon Sep 17 00:00:00 2001
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From: Samuel Holland <samuel@sholland.org>
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Date: Thu, 26 Aug 2021 21:32:15 -0500
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Subject: [PATCH 07/90] power: regulator: Add a driver for the AXP PMIC
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drivevbus
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The first AXP regulator converted to use the regulator uclass is the
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drivevbus switch, since it is used by the USB PHY driver.
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Signed-off-by: Samuel Holland <samuel@sholland.org>
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---
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drivers/power/regulator/Kconfig | 14 ++++++
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drivers/power/regulator/Makefile | 1 +
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drivers/power/regulator/axp_regulator.c | 58 +++++++++++++++++++++++++
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3 files changed, 73 insertions(+)
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create mode 100644 drivers/power/regulator/axp_regulator.c
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--- a/drivers/power/regulator/Kconfig
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+++ b/drivers/power/regulator/Kconfig
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@@ -43,6 +43,20 @@ config REGULATOR_AS3722
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but does not yet support change voltages. Currently this must be
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done using direct register writes to the PMIC.
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+config REGULATOR_AXP
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+ bool "Enable driver for X-Powers AXP PMIC regulators"
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+ depends on DM_REGULATOR && PMIC_AXP
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+ help
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+ Enable support for the regulators (DCDCs, LDOs) in the
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+ X-Powers AXP152, AXP2xx, and AXP8xx PMICs.
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+
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+config SPL_REGULATOR_AXP
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+ bool "Enable driver for X-Powers AXP PMIC regulators in SPL"
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+ depends on SPL_DM_REGULATOR && SPL_PMIC_AXP
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+ help
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+ Enable support in SPL for the regulators (DCDCs, LDOs) in the
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+ X-Powers AXP152, AXP2xx, and AXP8xx PMICs.
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+
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config REGULATOR_AXP_USB_POWER
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bool "Enable driver for X-Powers AXP PMIC USB power supply"
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depends on DM_REGULATOR && PMIC_AXP
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--- a/drivers/power/regulator/Makefile
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+++ b/drivers/power/regulator/Makefile
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@@ -7,6 +7,7 @@
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obj-$(CONFIG_$(SPL_)DM_REGULATOR) += regulator-uclass.o
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obj-$(CONFIG_REGULATOR_ACT8846) += act8846.o
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obj-$(CONFIG_REGULATOR_AS3722) += as3722_regulator.o
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+obj-$(CONFIG_$(SPL_)REGULATOR_AXP) += axp_regulator.o
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obj-$(CONFIG_$(SPL_)REGULATOR_AXP_USB_POWER) += axp_usb_power.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_DA9063) += da9063.o
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obj-$(CONFIG_DM_REGULATOR_MAX77686) += max77686.o
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--- /dev/null
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+++ b/drivers/power/regulator/axp_regulator.c
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@@ -0,0 +1,58 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+
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+#include <dm.h>
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+#include <errno.h>
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+#include <power/pmic.h>
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+#include <power/regulator.h>
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+
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+#define AXP_VBUS_IPSOUT 0x30
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+#define AXP_VBUS_IPSOUT_DRIVEBUS BIT(2)
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+#define AXP_MISC_CTRL 0x8f
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+#define AXP_MISC_CTRL_N_VBUSEN_FUNC BIT(4)
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+
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+static int axp_drivevbus_get_enable(struct udevice *dev)
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+{
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+ int ret;
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+
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+ ret = pmic_reg_read(dev->parent, AXP_VBUS_IPSOUT);
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+ if (ret < 0)
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+ return ret;
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+
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+ return !!(ret & AXP_VBUS_IPSOUT_DRIVEBUS);
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+}
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+
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+static int axp_drivevbus_set_enable(struct udevice *dev, bool enable)
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+{
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+ return pmic_clrsetbits(dev->parent, AXP_VBUS_IPSOUT,
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+ AXP_VBUS_IPSOUT_DRIVEBUS,
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+ enable ? AXP_VBUS_IPSOUT_DRIVEBUS : 0);
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+}
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+
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+static const struct dm_regulator_ops axp_drivevbus_ops = {
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+ .get_enable = axp_drivevbus_get_enable,
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+ .set_enable = axp_drivevbus_set_enable,
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+};
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+
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+static int axp_drivevbus_probe(struct udevice *dev)
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+{
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+ struct dm_regulator_uclass_plat *uc_plat = dev_get_uclass_plat(dev);
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+ int ret;
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+
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+ uc_plat->type = REGULATOR_TYPE_FIXED;
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+
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+ if (dev_read_bool(dev->parent, "x-powers,drive-vbus-en")) {
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+ ret = pmic_clrsetbits(dev->parent, AXP_MISC_CTRL,
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+ AXP_MISC_CTRL_N_VBUSEN_FUNC, 0);
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+ if (ret)
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+U_BOOT_DRIVER(axp_drivevbus) = {
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+ .name = "axp_drivevbus",
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+ .id = UCLASS_REGULATOR,
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+ .probe = axp_drivevbus_probe,
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+ .ops = &axp_drivevbus_ops,
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+};
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