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mailbox: imx: fix wakeup failure from freeze mode

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commit 892cb524ae8a27bf5e42f711318371acd9a9f74a upstream.

Since IRQF_NO_SUSPEND used for imx mailbox driver, that means this irq
can't be used for wakeup source so that can't wakeup from freeze mode.
Add pm_system_wakeup() to wakeup from freeze mode.

Fixes: b7b2796b9b31e("mailbox: imx: ONLY IPC MU needs IRQF_NO_SUSPEND flag")
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Robin Gong 2022-02-07 09:52:06 +08:00 committed by Greg Kroah-Hartman
parent 051360e513
commit a16f5ae8ad
1 changed files with 9 additions and 0 deletions
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9
drivers/mailbox/imx-mailbox.c
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@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/pm_runtime.h>
#include <linux/suspend.h>
#include <linux/slab.h>
#define IMX_MU_xSR_GIPn(x) BIT(28 + (3 - (x)))
@ -66,6 +67,7 @@ struct imx_mu_priv {
const struct imx_mu_dcfg *dcfg;
struct clk *clk;
int irq;
bool suspend;
u32 xcr;
@ -277,6 +279,9 @@ static irqreturn_t imx_mu_isr(int irq, void *p)
return IRQ_NONE;
}
if (priv->suspend)
pm_system_wakeup();
return IRQ_HANDLED;
}
@ -326,6 +331,8 @@ static int imx_mu_startup(struct mbox_chan *chan)
break;
}
priv->suspend = true;
return 0;
}
@ -543,6 +550,8 @@ static int imx_mu_probe(struct platform_device *pdev)
clk_disable_unprepare(priv->clk);
priv->suspend = false;
return 0;
disable_runtime_pm: