diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/pmic/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/power/pmic/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/pmic/bd71837.c | 89 | ||||
| -rw-r--r-- | drivers/power/regulator/pfuze100.c | 4 |
4 files changed, 99 insertions, 2 deletions
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index b0cd260354..450935fdc1 100644 --- a/drivers/power/pmic/Kconfig +++ b/drivers/power/pmic/Kconfig @@ -48,6 +48,13 @@ config PMIC_AS3722 interface and is designs to cover most of the power managementment required for a tablets or laptop. +config DM_PMIC_BD71837 + bool "Enable Driver Model for PMIC BD71837" + depends on DM_PMIC + help + This config enables implementation of driver-model pmic uclass features + for PMIC BD71837. The driver implements read/write operations. + config DM_PMIC_FAN53555 bool "Enable support for OnSemi FAN53555" depends on DM_PMIC && DM_REGULATOR && DM_I2C diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index ce250cb155..888dbb2857 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_DM_PMIC_FAN53555) += fan53555.o obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o obj-$(CONFIG_DM_PMIC_MC34708) += mc34708.o +obj-$(CONFIG_$(SPL_)DM_PMIC_BD71837) += bd71837.o obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o diff --git a/drivers/power/pmic/bd71837.c b/drivers/power/pmic/bd71837.c new file mode 100644 index 0000000000..24d9f7fab7 --- /dev/null +++ b/drivers/power/pmic/bd71837.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2018 NXP + */ + +#include <common.h> +#include <errno.h> +#include <dm.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/bd71837.h> + +DECLARE_GLOBAL_DATA_PTR; + +static const struct pmic_child_info pmic_children_info[] = { + /* buck */ + { .prefix = "b", .driver = BD71837_REGULATOR_DRIVER}, + /* ldo */ + { .prefix = "l", .driver = BD71837_REGULATOR_DRIVER}, + { }, +}; + +static int bd71837_reg_count(struct udevice *dev) +{ + return BD71837_REG_NUM; +} + +static int bd71837_write(struct udevice *dev, uint reg, const uint8_t *buff, + int len) +{ + if (dm_i2c_write(dev, reg, buff, len)) { + pr_err("write error to device: %p register: %#x!", dev, reg); + return -EIO; + } + + return 0; +} + +static int bd71837_read(struct udevice *dev, uint reg, uint8_t *buff, int len) +{ + if (dm_i2c_read(dev, reg, buff, len)) { + pr_err("read error from device: %p register: %#x!", dev, reg); + return -EIO; + } + + return 0; +} + +static int bd71837_bind(struct udevice *dev) +{ + int children; + ofnode regulators_node; + + regulators_node = dev_read_subnode(dev, "regulators"); + if (!ofnode_valid(regulators_node)) { + debug("%s: %s regulators subnode not found!", __func__, + dev->name); + return -ENXIO; + } + + debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); + + children = pmic_bind_children(dev, regulators_node, pmic_children_info); + if (!children) + debug("%s: %s - no child found\n", __func__, dev->name); + + /* Always return success for this device */ + return 0; +} + +static struct dm_pmic_ops bd71837_ops = { + .reg_count = bd71837_reg_count, + .read = bd71837_read, + .write = bd71837_write, +}; + +static const struct udevice_id bd71837_ids[] = { + { .compatible = "rohm,bd71837", .data = 0x4b, }, + { } +}; + +U_BOOT_DRIVER(pmic_bd71837) = { + .name = "bd71837 pmic", + .id = UCLASS_PMIC, + .of_match = bd71837_ids, + .bind = bd71837_bind, + .ops = &bd71837_ops, +}; diff --git a/drivers/power/regulator/pfuze100.c b/drivers/power/regulator/pfuze100.c index 99073d6018..d6d35f3a39 100644 --- a/drivers/power/regulator/pfuze100.c +++ b/drivers/power/regulator/pfuze100.c @@ -482,11 +482,11 @@ static int pfuze100_regulator_val(struct udevice *dev, int op, int *uV) debug("Set voltage for REGULATOR_TYPE_FIXED regulator\n"); return -EINVAL; } else if (desc->volt_table) { - for (i = 0; i < desc->vsel_mask; i++) { + for (i = 0; i <= desc->vsel_mask; i++) { if (*uV == desc->volt_table[i]) break; } - if (i == desc->vsel_mask) { + if (i == desc->vsel_mask + 1) { debug("Unsupported voltage %u\n", *uV); return -EINVAL; } |