diff options
Diffstat (limited to 'drivers/power/pmic/lp873x.c')
-rw-r--r-- | drivers/power/pmic/lp873x.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/power/pmic/lp873x.c b/drivers/power/pmic/lp873x.c new file mode 100644 index 00000000000..307f96bad1b --- /dev/null +++ b/drivers/power/pmic/lp873x.c @@ -0,0 +1,86 @@ +/* + * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com> + * Keerthy <j-keerthy@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <fdtdec.h> +#include <errno.h> +#include <dm.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/lp873x.h> +#include <dm/device.h> + +DECLARE_GLOBAL_DATA_PTR; + +static const struct pmic_child_info pmic_children_info[] = { + { .prefix = "ldo", .driver = LP873X_LDO_DRIVER }, + { .prefix = "buck", .driver = LP873X_BUCK_DRIVER }, + { }, +}; + +static int lp873x_write(struct udevice *dev, uint reg, const uint8_t *buff, + int len) +{ + if (dm_i2c_write(dev, reg, buff, len)) { + error("write error to device: %p register: %#x!", dev, reg); + return -EIO; + } + + return 0; +} + +static int lp873x_read(struct udevice *dev, uint reg, uint8_t *buff, int len) +{ + if (dm_i2c_read(dev, reg, buff, len)) { + error("read error from device: %p register: %#x!", dev, reg); + return -EIO; + } + + return 0; +} + +static int lp873x_bind(struct udevice *dev) +{ + int regulators_node; + const void *blob = gd->fdt_blob; + int children; + int node = dev->of_offset; + + regulators_node = fdt_subnode_offset(blob, node, "regulators"); + + if (regulators_node <= 0) { + printf("%s: %s reg subnode not found!", __func__, dev->name); + return -ENXIO; + } + + children = pmic_bind_children(dev, regulators_node, pmic_children_info); + if (!children) + printf("%s: %s - no child found\n", __func__, dev->name); + + /* Always return success for this device */ + return 0; +} + +static struct dm_pmic_ops lp873x_ops = { + .read = lp873x_read, + .write = lp873x_write, +}; + +static const struct udevice_id lp873x_ids[] = { + { .compatible = "ti,lp8732", .data = LP8732 }, + { .compatible = "ti,lp8733" , .data = LP8733 }, + { } +}; + +U_BOOT_DRIVER(pmic_lp873x) = { + .name = "lp873x_pmic", + .id = UCLASS_PMIC, + .of_match = lp873x_ids, + .bind = lp873x_bind, + .ops = &lp873x_ops, +}; |