mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 18:13:04 +00:00
eda080eabf
After converting am335x to probe devices with simple-pm-bus I noticed
that we are not passing auxdata for of_platform_populate() like we do
with simple-bus.
While device tree using SoCs should no longer need platform data, there
are still quite a few drivers that still need it as can be seen with
git grep OF_DEV_AUXDATA. We want to have simple-pm-bus be usable as a
replacement for simple-bus also for cases where OF_DEV_AUXDATA is still
needed.
Let's fix the issue by passing auxdata as platform data to simple-pm-bus.
That way the SoCs needing this can pass the auxdata with OF_DEV_AUXDATA.
And let's pass the auxdata for omaps to fix the issue for am335x.
As an alternative solution, adding simple-pm-bus handling directly to
drivers/of/platform.c was considered, but we would still need simple-pm-bus
device driver. So passing auxdata as platform data seems like the simplest
solution.
Fixes: 5a230524f8 ("ARM: dts: Use simple-pm-bus for genpd for am3 l4_wkup")
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Tony Lindgren <tony@atomide.com>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
|
|
* Simple Power-Managed Bus Driver
|
|
*
|
|
* Copyright (C) 2014-2015 Glider bvba
|
|
*
|
|
* 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/module.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pm_runtime.h>
|
|
|
|
|
|
static int simple_pm_bus_probe(struct platform_device *pdev)
|
|
{
|
|
const struct of_dev_auxdata *lookup = dev_get_platdata(&pdev->dev);
|
|
struct device_node *np = pdev->dev.of_node;
|
|
|
|
dev_dbg(&pdev->dev, "%s\n", __func__);
|
|
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
if (np)
|
|
of_platform_populate(np, NULL, lookup, &pdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int simple_pm_bus_remove(struct platform_device *pdev)
|
|
{
|
|
dev_dbg(&pdev->dev, "%s\n", __func__);
|
|
|
|
pm_runtime_disable(&pdev->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id simple_pm_bus_of_match[] = {
|
|
{ .compatible = "simple-pm-bus", },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, simple_pm_bus_of_match);
|
|
|
|
static struct platform_driver simple_pm_bus_driver = {
|
|
.probe = simple_pm_bus_probe,
|
|
.remove = simple_pm_bus_remove,
|
|
.driver = {
|
|
.name = "simple-pm-bus",
|
|
.of_match_table = simple_pm_bus_of_match,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(simple_pm_bus_driver);
|
|
|
|
MODULE_DESCRIPTION("Simple Power-Managed Bus Driver");
|
|
MODULE_AUTHOR("Geert Uytterhoeven <geert+renesas@glider.be>");
|
|
MODULE_LICENSE("GPL v2");
|