mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-23 19:43:33 +00:00
95d9ffd7b6
The AXP PMICs have the ability to power off the system. The existing code for this is duplicated for each PMIC variant, and uses the legacy non-DM "pmic_bus" interface. When SYSRESET is enabled, this can all be replaced with a sysreset device using the DM_PMIC interface. Since the trigger bit is the same on all PMIC variants, use the register definitions from the oldest supported PMIC. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
|
|
#include <axp_pmic.h>
|
|
#include <dm.h>
|
|
#include <dm/lists.h>
|
|
#include <i2c.h>
|
|
#include <power/pmic.h>
|
|
#include <sysreset.h>
|
|
|
|
#if CONFIG_IS_ENABLED(SYSRESET)
|
|
static int axp_sysreset_request(struct udevice *dev, enum sysreset_t type)
|
|
{
|
|
int ret;
|
|
|
|
if (type != SYSRESET_POWER_OFF)
|
|
return -EPROTONOSUPPORT;
|
|
|
|
ret = pmic_clrsetbits(dev->parent, AXP152_SHUTDOWN, 0, AXP152_POWEROFF);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
static struct sysreset_ops axp_sysreset_ops = {
|
|
.request = axp_sysreset_request,
|
|
};
|
|
|
|
U_BOOT_DRIVER(axp_sysreset) = {
|
|
.name = "axp_sysreset",
|
|
.id = UCLASS_SYSRESET,
|
|
.ops = &axp_sysreset_ops,
|
|
};
|
|
#endif
|
|
|
|
static int axp_pmic_reg_count(struct udevice *dev)
|
|
{
|
|
/* TODO: Get the specific value from driver data. */
|
|
return 0x100;
|
|
}
|
|
|
|
static struct dm_pmic_ops axp_pmic_ops = {
|
|
.reg_count = axp_pmic_reg_count,
|
|
.read = dm_i2c_read,
|
|
.write = dm_i2c_write,
|
|
};
|
|
|
|
static int axp_pmic_bind(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = dm_scan_fdt_dev(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (CONFIG_IS_ENABLED(SYSRESET)) {
|
|
ret = device_bind_driver_to_node(dev, "axp_sysreset", "axp_sysreset",
|
|
dev_ofnode(dev), NULL);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id axp_pmic_ids[] = {
|
|
{ .compatible = "x-powers,axp152" },
|
|
{ .compatible = "x-powers,axp202" },
|
|
{ .compatible = "x-powers,axp209" },
|
|
{ .compatible = "x-powers,axp221" },
|
|
{ .compatible = "x-powers,axp223" },
|
|
{ .compatible = "x-powers,axp803" },
|
|
{ .compatible = "x-powers,axp806" },
|
|
{ .compatible = "x-powers,axp809" },
|
|
{ .compatible = "x-powers,axp813" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(axp_pmic) = {
|
|
.name = "axp_pmic",
|
|
.id = UCLASS_PMIC,
|
|
.of_match = axp_pmic_ids,
|
|
.bind = axp_pmic_bind,
|
|
.ops = &axp_pmic_ops,
|
|
};
|