mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 02:08:38 +00:00
41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
142 lines
3.2 KiB
C
142 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright 2017 NXP
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <malloc.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>
|
|
#include <linux/arm-smccc.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);
|
|
|
|
arm_smccc_smc(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN,
|
|
pdata->resource_id, 1, 0, 0, 0, 0, NULL);
|
|
|
|
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;
|
|
|
|
arm_smccc_smc(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN,
|
|
pdata->resource_id, 0, 0, 0, 0, 0, NULL);
|
|
|
|
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,
|
|
.rfree = 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 = sizeof(struct imx8m_power_domain_platdata),
|
|
.ops = &imx8m_power_domain_ops,
|
|
};
|