132 lines
2.8 KiB
C
132 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018 Flowbird
|
|
* Martin Fuzzey <martin.fuzzey@flowbird.group>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <fdtdec.h>
|
|
#include <errno.h>
|
|
#include <dm.h>
|
|
#include <i2c.h>
|
|
#include <log.h>
|
|
#include <power/pmic.h>
|
|
#include <power/regulator.h>
|
|
#include <power/da9063_pmic.h>
|
|
|
|
static const struct pmic_child_info pmic_children_info[] = {
|
|
{ .prefix = "ldo", .driver = DA9063_LDO_DRIVER },
|
|
{ .prefix = "b", .driver = DA9063_BUCK_DRIVER },
|
|
{ },
|
|
};
|
|
|
|
/*
|
|
* The register map is non contiguous and attempts to read in the holes fail.
|
|
* But "pmic dump" tries to dump the full register map.
|
|
* So define the holes here so we can fix that.
|
|
*/
|
|
struct da9063_reg_hole {
|
|
u16 first;
|
|
u16 last;
|
|
};
|
|
|
|
static const struct da9063_reg_hole da9063_reg_holes[] = {
|
|
DA9063_REG_HOLE_1,
|
|
DA9063_REG_HOLE_2,
|
|
DA9063_REG_HOLE_3,
|
|
/* These aren't readable. I can't see why from the datasheet but
|
|
* attempts to read fail and the kernel marks them unreadable too,
|
|
*/
|
|
{DA9063_REG_OTP_COUNT, DA9063_REG_OTP_DATA},
|
|
};
|
|
|
|
static int da9063_reg_count(struct udevice *dev)
|
|
{
|
|
return DA9063_NUM_OF_REGS;
|
|
}
|
|
|
|
static bool da9063_reg_valid(uint reg)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(da9063_reg_holes); i++) {
|
|
const struct da9063_reg_hole *hole = &da9063_reg_holes[i];
|
|
|
|
if (reg >= hole->first && reg <= hole->last)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static int da9063_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 da9063_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
|
|
{
|
|
if (!da9063_reg_valid(reg))
|
|
return -ENODATA;
|
|
|
|
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 da9063_bind(struct udevice *dev)
|
|
{
|
|
ofnode regulators_node;
|
|
int children;
|
|
|
|
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 int da9063_probe(struct udevice *dev)
|
|
{
|
|
return i2c_set_chip_addr_offset_mask(dev, 0x1);
|
|
}
|
|
|
|
static struct dm_pmic_ops da9063_ops = {
|
|
.reg_count = da9063_reg_count,
|
|
.read = da9063_read,
|
|
.write = da9063_write,
|
|
};
|
|
|
|
static const struct udevice_id da9063_ids[] = {
|
|
{ .compatible = "dlg,da9063" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pmic_da9063) = {
|
|
.name = "da9063_pmic",
|
|
.id = UCLASS_PMIC,
|
|
.of_match = da9063_ids,
|
|
.bind = da9063_bind,
|
|
.probe = da9063_probe,
|
|
.ops = &da9063_ops,
|
|
};
|