mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
3a99cb090b
Commit 498b5fdd40 ("PM / clk: Add support for adding a specific clock
from device-tree") add a new helper function for adding a clock from
device-tree to a device. Update the Tegra ACONNECT driver to use this
new function to simplify the driver.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/*
|
|
* Tegra ACONNECT Bus Driver
|
|
*
|
|
* Copyright (C) 2016, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pm_clock.h>
|
|
#include <linux/pm_runtime.h>
|
|
|
|
static int tegra_aconnect_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
|
|
if (!pdev->dev.of_node)
|
|
return -EINVAL;
|
|
|
|
ret = pm_clk_create(&pdev->dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = of_pm_clk_add_clk(&pdev->dev, "ape");
|
|
if (ret)
|
|
goto clk_destroy;
|
|
|
|
ret = of_pm_clk_add_clk(&pdev->dev, "apb2ape");
|
|
if (ret)
|
|
goto clk_destroy;
|
|
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
|
|
|
|
dev_info(&pdev->dev, "Tegra ACONNECT bus registered\n");
|
|
|
|
return 0;
|
|
|
|
clk_destroy:
|
|
pm_clk_destroy(&pdev->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tegra_aconnect_remove(struct platform_device *pdev)
|
|
{
|
|
pm_runtime_disable(&pdev->dev);
|
|
|
|
pm_clk_destroy(&pdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_aconnect_runtime_resume(struct device *dev)
|
|
{
|
|
return pm_clk_resume(dev);
|
|
}
|
|
|
|
static int tegra_aconnect_runtime_suspend(struct device *dev)
|
|
{
|
|
return pm_clk_suspend(dev);
|
|
}
|
|
|
|
static const struct dev_pm_ops tegra_aconnect_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(tegra_aconnect_runtime_suspend,
|
|
tegra_aconnect_runtime_resume, NULL)
|
|
};
|
|
|
|
static const struct of_device_id tegra_aconnect_of_match[] = {
|
|
{ .compatible = "nvidia,tegra210-aconnect", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tegra_aconnect_of_match);
|
|
|
|
static struct platform_driver tegra_aconnect_driver = {
|
|
.probe = tegra_aconnect_probe,
|
|
.remove = tegra_aconnect_remove,
|
|
.driver = {
|
|
.name = "tegra-aconnect",
|
|
.of_match_table = tegra_aconnect_of_match,
|
|
.pm = &tegra_aconnect_pm_ops,
|
|
},
|
|
};
|
|
module_platform_driver(tegra_aconnect_driver);
|
|
|
|
MODULE_DESCRIPTION("NVIDIA Tegra ACONNECT Bus Driver");
|
|
MODULE_AUTHOR("Jon Hunter <jonathanh@nvidia.com>");
|
|
MODULE_LICENSE("GPL v2");
|