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mailbox: imx: fix wakeup failure from freeze mode 

commit 892cb524ae 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 8cbf4ae7a2
commit c78d23ea75
1 changed files with 9 additions and 0 deletions
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9
drivers/mailbox/imx-mailbox.c
View File

@ -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_CHANS 16
@ -67,6 +68,7 @@ struct imx_mu_priv {
const struct imx_mu_dcfg *dcfg;
struct clk *clk;
int irq;
bool suspend;
u32 xcr[4];
@ -307,6 +309,9 @@ static irqreturn_t imx_mu_isr(int irq, void *p)
return IRQ_NONE;
}
if (priv->suspend)
pm_system_wakeup();
return IRQ_HANDLED;
}
@ -652,6 +657,8 @@ static int __maybe_unused imx_mu_suspend_noirq(struct device *dev)
priv->xcr[i] = imx_mu_read(priv, priv->dcfg->xCR[i]);
}
priv->suspend = true;
return 0;
}
@ -673,6 +680,8 @@ static int __maybe_unused imx_mu_resume_noirq(struct device *dev)
imx_mu_write(priv, priv->xcr[i], priv->dcfg->xCR[i]);
}
priv->suspend = false;
return 0;
}