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phy: xilinx: add runtime PM support

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Added Runtime power management support to the xilinx phy driver and using
DEFINE_RUNTIME_DEV_PM_OPS new macros allows the compiler to remove the
unused dev_pm_ops structure and related functions if !CONFIG_PM without
the need to mark the functions __maybe_unused.

Signed-off-by: Piyush Mehta <piyush.mehta@amd.com>
Link: https://lore.kernel.org/r/20230613140250.3018947-2-piyush.mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Piyush Mehta 2023-06-13 19:32:49 +05:30 committed by Vinod Koul
parent bd36b1ba20
commit b3db66f624
1 changed files with 28 additions and 7 deletions
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35
drivers/phy/xilinx/phy-zynqmp.c
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@ -20,6 +20,7 @@
#include <linux/of.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <dt-bindings/phy/phy.h>
@ -820,7 +821,7 @@ static struct phy *xpsgtr_xlate(struct device *dev,
* Power Management
*/
static int __maybe_unused xpsgtr_suspend(struct device *dev)
static int xpsgtr_runtime_suspend(struct device *dev)
{
struct xpsgtr_dev *gtr_dev = dev_get_drvdata(dev);
unsigned int i;
@ -835,7 +836,7 @@ static int __maybe_unused xpsgtr_suspend(struct device *dev)
return 0;
}
static int __maybe_unused xpsgtr_resume(struct device *dev)
static int xpsgtr_runtime_resume(struct device *dev)
{
struct xpsgtr_dev *gtr_dev = dev_get_drvdata(dev);
unsigned int icm_cfg0, icm_cfg1;
@ -876,10 +877,8 @@ err_clk_put:
return err;
}
static const struct dev_pm_ops xpsgtr_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(xpsgtr_suspend, xpsgtr_resume)
};
static DEFINE_RUNTIME_DEV_PM_OPS(xpsgtr_pm_ops, xpsgtr_runtime_suspend,
xpsgtr_runtime_resume, NULL);
/*
* Probe & Platform Driver
*/
@ -1005,6 +1004,16 @@ static int xpsgtr_probe(struct platform_device *pdev)
ret = PTR_ERR(provider);
goto err_clk_put;
}
pm_runtime_set_active(gtr_dev->dev);
pm_runtime_enable(gtr_dev->dev);
ret = pm_runtime_resume_and_get(gtr_dev->dev);
if (ret < 0) {
pm_runtime_disable(gtr_dev->dev);
goto err_clk_put;
}
return 0;
err_clk_put:
@ -1014,6 +1023,17 @@ err_clk_put:
return ret;
}
static int xpsgtr_remove(struct platform_device *pdev)
{
struct xpsgtr_dev *gtr_dev = platform_get_drvdata(pdev);
pm_runtime_disable(gtr_dev->dev);
pm_runtime_put_noidle(gtr_dev->dev);
pm_runtime_set_suspended(gtr_dev->dev);
return 0;
}
static const struct of_device_id xpsgtr_of_match[] = {
{ .compatible = "xlnx,zynqmp-psgtr", },
{ .compatible = "xlnx,zynqmp-psgtr-v1.1", },
@ -1023,10 +1043,11 @@ MODULE_DEVICE_TABLE(of, xpsgtr_of_match);
static struct platform_driver xpsgtr_driver = {
.probe = xpsgtr_probe,
.remove = xpsgtr_remove,
.driver = {
.name = "xilinx-psgtr",
.of_match_table = xpsgtr_of_match,
.pm = &xpsgtr_pm_ops,
.pm = pm_ptr(&xpsgtr_pm_ops),
},
};