package/boot/uboot-d1/patches/0007-power-regulator-Add-a-driver-for-the-AXP-PMIC-drivev.patch

   1 From 25434a394705d2de92c50981e31347db4074204a Mon Sep 17 00:00:00 2001
   2 From: Samuel Holland <samuel@sholland.org>
   3 Date: Thu, 26 Aug 2021 21:32:15 -0500
   4 Subject: [PATCH 07/90] power: regulator: Add a driver for the AXP PMIC
   5  drivevbus
   6
   7 The first AXP regulator converted to use the regulator uclass is the
   8 drivevbus switch, since it is used by the USB PHY driver.
   9
  10 Signed-off-by: Samuel Holland <samuel@sholland.org>
  11 ---
  12  drivers/power/regulator/Kconfig         | 14 ++++++
  13  drivers/power/regulator/Makefile        |  1 +
  14  drivers/power/regulator/axp_regulator.c | 58 +++++++++++++++++++++++++
  15  3 files changed, 73 insertions(+)
  16  create mode 100644 drivers/power/regulator/axp_regulator.c
  17
  18 --- a/drivers/power/regulator/Kconfig
  19 +++ b/drivers/power/regulator/Kconfig
  20 @@ -43,6 +43,20 @@ config REGULATOR_AS3722
  21           but does not yet support change voltages. Currently this must be
  22           done using direct register writes to the PMIC.
  23
  24 +config REGULATOR_AXP
  25 +       bool "Enable driver for X-Powers AXP PMIC regulators"
  26 +       depends on DM_REGULATOR && PMIC_AXP
  27 +       help
  28 +         Enable support for the regulators (DCDCs, LDOs) in the
  29 +         X-Powers AXP152, AXP2xx, and AXP8xx PMICs.
  30 +
  31 +config SPL_REGULATOR_AXP
  32 +       bool "Enable driver for X-Powers AXP PMIC regulators in SPL"
  33 +       depends on SPL_DM_REGULATOR && SPL_PMIC_AXP
  34 +       help
  35 +         Enable support in SPL for the regulators (DCDCs, LDOs) in the
  36 +         X-Powers AXP152, AXP2xx, and AXP8xx PMICs.
  37 +
  38  config REGULATOR_AXP_USB_POWER
  39         bool "Enable driver for X-Powers AXP PMIC USB power supply"
  40         depends on DM_REGULATOR && PMIC_AXP
  41 --- a/drivers/power/regulator/Makefile
  42 +++ b/drivers/power/regulator/Makefile
  43 @@ -7,6 +7,7 @@
  44  obj-$(CONFIG_$(SPL_)DM_REGULATOR) += regulator-uclass.o
  45  obj-$(CONFIG_REGULATOR_ACT8846) += act8846.o
  46  obj-$(CONFIG_REGULATOR_AS3722) += as3722_regulator.o
  47 +obj-$(CONFIG_$(SPL_)REGULATOR_AXP) += axp_regulator.o
  48  obj-$(CONFIG_$(SPL_)REGULATOR_AXP_USB_POWER) += axp_usb_power.o
  49  obj-$(CONFIG_$(SPL_)DM_REGULATOR_DA9063) += da9063.o
  50  obj-$(CONFIG_DM_REGULATOR_MAX77686) += max77686.o
  51 --- /dev/null
  52 +++ b/drivers/power/regulator/axp_regulator.c
  53 @@ -0,0 +1,58 @@
  54 +// SPDX-License-Identifier: GPL-2.0+
  55 +
  56 +#include <dm.h>
  57 +#include <errno.h>
  58 +#include <power/pmic.h>
  59 +#include <power/regulator.h>
  60 +
  61 +#define AXP_VBUS_IPSOUT                        0x30
  62 +#define AXP_VBUS_IPSOUT_DRIVEBUS               BIT(2)
  63 +#define AXP_MISC_CTRL                  0x8f
  64 +#define AXP_MISC_CTRL_N_VBUSEN_FUNC            BIT(4)
  65 +
  66 +static int axp_drivevbus_get_enable(struct udevice *dev)
  67 +{
  68 +       int ret;
  69 +
  70 +       ret = pmic_reg_read(dev->parent, AXP_VBUS_IPSOUT);
  71 +       if (ret < 0)
  72 +               return ret;
  73 +
  74 +       return !!(ret & AXP_VBUS_IPSOUT_DRIVEBUS);
  75 +}
  76 +
  77 +static int axp_drivevbus_set_enable(struct udevice *dev, bool enable)
  78 +{
  79 +       return pmic_clrsetbits(dev->parent, AXP_VBUS_IPSOUT,
  80 +                              AXP_VBUS_IPSOUT_DRIVEBUS,
  81 +                              enable ? AXP_VBUS_IPSOUT_DRIVEBUS : 0);
  82 +}
  83 +
  84 +static const struct dm_regulator_ops axp_drivevbus_ops = {
  85 +       .get_enable             = axp_drivevbus_get_enable,
  86 +       .set_enable             = axp_drivevbus_set_enable,
  87 +};
  88 +
  89 +static int axp_drivevbus_probe(struct udevice *dev)
  90 +{
  91 +       struct dm_regulator_uclass_plat *uc_plat = dev_get_uclass_plat(dev);
  92 +       int ret;
  93 +
  94 +       uc_plat->type = REGULATOR_TYPE_FIXED;
  95 +
  96 +       if (dev_read_bool(dev->parent, "x-powers,drive-vbus-en")) {
  97 +               ret = pmic_clrsetbits(dev->parent, AXP_MISC_CTRL,
  98 +                                     AXP_MISC_CTRL_N_VBUSEN_FUNC, 0);
  99 +               if (ret)
 100 +                       return ret;
 101 +       }
 102 +
 103 +       return 0;
 104 +}
 105 +
 106 +U_BOOT_DRIVER(axp_drivevbus) = {
 107 +       .name           = "axp_drivevbus",
 108 +       .id             = UCLASS_REGULATOR,
 109 +       .probe          = axp_drivevbus_probe,
 110 +       .ops            = &axp_drivevbus_ops,
 111 +};