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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2017 NXP
*/
#include <common.h>
#include <dm.h>
#include <power-domain-uclass.h>
#include <asm/io.h>
#include <asm/arch/power-domain.h>
#include <asm/mach-imx/sys_proto.h>
#include <dm/device-internal.h>
#include <dm/device.h>
#include <imx_sip.h>
DECLARE_GLOBAL_DATA_PTR;
static int imx8m_power_domain_request(struct power_domain *power_domain)
{
return 0;
}
static int imx8m_power_domain_free(struct power_domain *power_domain)
{
return 0;
}
static int imx8m_power_domain_on(struct power_domain *power_domain)
{
struct udevice *dev = power_domain->dev;
struct imx8m_power_domain_platdata *pdata;
pdata = dev_get_platdata(dev);
if (pdata->resource_id < 0)
return -EINVAL;
if (pdata->has_pd)
power_domain_on(&pdata->pd);
call_imx_sip(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN,
pdata->resource_id, 1, 0);
return 0;
}
static int imx8m_power_domain_off(struct power_domain *power_domain)
{
struct udevice *dev = power_domain->dev;
struct imx8m_power_domain_platdata *pdata;
pdata = dev_get_platdata(dev);
if (pdata->resource_id < 0)
return -EINVAL;
call_imx_sip(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN,
pdata->resource_id, 0, 0);
if (pdata->has_pd)
power_domain_off(&pdata->pd);
return 0;
}
static int imx8m_power_domain_of_xlate(struct power_domain *power_domain,
struct ofnode_phandle_args *args)
{
return 0;
}
static int imx8m_power_domain_bind(struct udevice *dev)
{
int offset;
const char *name;
int ret = 0;
offset = dev_of_offset(dev);
for (offset = fdt_first_subnode(gd->fdt_blob, offset); offset > 0;
offset = fdt_next_subnode(gd->fdt_blob, offset)) {
/* Bind the subnode to this driver */
name = fdt_get_name(gd->fdt_blob, offset, NULL);
ret = device_bind_with_driver_data(dev, dev->driver, name,
dev->driver_data,
offset_to_ofnode(offset),
NULL);
if (ret == -ENODEV)
printf("Driver '%s' refuses to bind\n",
dev->driver->name);
if (ret)
printf("Error binding driver '%s': %d\n",
dev->driver->name, ret);
}
return 0;
}
static int imx8m_power_domain_probe(struct udevice *dev)
{
return 0;
}
static int imx8m_power_domain_ofdata_to_platdata(struct udevice *dev)
{
struct imx8m_power_domain_platdata *pdata = dev_get_platdata(dev);
pdata->resource_id = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
"reg", -1);
if (!power_domain_get(dev, &pdata->pd))
pdata->has_pd = 1;
return 0;
}
static const struct udevice_id imx8m_power_domain_ids[] = {
{ .compatible = "fsl,imx8mq-gpc" },
{ }
};
struct power_domain_ops imx8m_power_domain_ops = {
.request = imx8m_power_domain_request,
.free = imx8m_power_domain_free,
.on = imx8m_power_domain_on,
.off = imx8m_power_domain_off,
.of_xlate = imx8m_power_domain_of_xlate,
};
U_BOOT_DRIVER(imx8m_power_domain) = {
.name = "imx8m_power_domain",
.id = UCLASS_POWER_DOMAIN,
.of_match = imx8m_power_domain_ids,
.bind = imx8m_power_domain_bind,
.probe = imx8m_power_domain_probe,
.ofdata_to_platdata = imx8m_power_domain_ofdata_to_platdata,
.platdata_auto_alloc_size = sizeof(struct imx8m_power_domain_platdata),
.ops = &imx8m_power_domain_ops,
};
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