This is a note to let you know that I've just added the patch titled
irqchip/imx-irqsteer: Add runtime PM support
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
irqchip-imx-irqsteer-add-runtime-pm-support.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c49f9557277856eff84fc8e143daa06b18f0fff3
Author: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Date: Wed Apr 6 18:37:01 2022 +0200
irqchip/imx-irqsteer: Add runtime PM support
[ Upstream commit 4730d2233311d86cad9dc510318d1b40e4b53cf2 ]
There are now SoCs that integrate the irqsteer controller within
a separate power domain. In order to allow this domain to be
powered down when not needed, add runtime PM support to the driver.
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220406163701.1277930-2-l.stach@xxxxxxxxxxxxxx
Stable-dep-of: 33b1c47d1fc0 ("irqchip/imx-irqsteer: Handle runtime power management correctly")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/irqchip/irq-imx-irqsteer.c b/drivers/irqchip/irq-imx-irqsteer.c
index 1b01e655b9923..e622dbd614638 100644
--- a/drivers/irqchip/irq-imx-irqsteer.c
+++ b/drivers/irqchip/irq-imx-irqsteer.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
#include <linux/spinlock.h>
#define CTRL_STRIDE_OFF(_t, _r) (_t * 4 * _r)
@@ -181,7 +182,7 @@ static int imx_irqsteer_probe(struct platform_device *pdev)
data->irq_count = DIV_ROUND_UP(irqs_num, 64);
data->reg_num = irqs_num / 32;
- if (IS_ENABLED(CONFIG_PM_SLEEP)) {
+ if (IS_ENABLED(CONFIG_PM)) {
data->saved_reg = devm_kzalloc(&pdev->dev,
sizeof(u32) * data->reg_num,
GFP_KERNEL);
@@ -205,6 +206,7 @@ static int imx_irqsteer_probe(struct platform_device *pdev)
ret = -ENOMEM;
goto out;
}
+ irq_domain_set_pm_device(data->domain, &pdev->dev);
if (!data->irq_count || data->irq_count > CHAN_MAX_OUTPUT_INT) {
ret = -EINVAL;
@@ -225,6 +227,9 @@ static int imx_irqsteer_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
return 0;
out:
clk_disable_unprepare(data->ipg_clk);
@@ -247,7 +252,7 @@ static int imx_irqsteer_remove(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_PM
static void imx_irqsteer_save_regs(struct irqsteer_data *data)
{
int i;
@@ -294,7 +299,10 @@ static int imx_irqsteer_resume(struct device *dev)
#endif
static const struct dev_pm_ops imx_irqsteer_pm_ops = {
- SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(imx_irqsteer_suspend, imx_irqsteer_resume)
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(imx_irqsteer_suspend,
+ imx_irqsteer_resume, NULL)
};
static const struct of_device_id imx_irqsteer_dt_ids[] = {
