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authorRobin Gong <yibin.gong@nxp.com>2022-02-07 04:52:06 +0300
committerJassi Brar <jaswinder.singh@linaro.org>2022-03-13 04:26:42 +0300
commit892cb524ae8a27bf5e42f711318371acd9a9f74a (patch)
tree4ff4f3968a73212290d2b55874f7339d9947e441 /drivers/mailbox
parentaf2dfa96c52d042df5deb29fb6e32d3ff4d76a61 (diff)
downloadlinux-892cb524ae8a27bf5e42f711318371acd9a9f74a.tar.xz
mailbox: imx: fix wakeup failure from freeze mode
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>
Diffstat (limited to 'drivers/mailbox')
-rw-r--r--drivers/mailbox/imx-mailbox.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 544de2db6453..8b1399e5d7bf 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -14,6 +14,7 @@
#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
@@ -76,6 +77,7 @@ struct imx_mu_priv {
const struct imx_mu_dcfg *dcfg;
struct clk *clk;
int irq;
+ bool suspend;
u32 xcr[4];
@@ -334,6 +336,9 @@ static irqreturn_t imx_mu_isr(int irq, void *p)
return IRQ_NONE;
}
+ if (priv->suspend)
+ pm_system_wakeup();
+
return IRQ_HANDLED;
}
@@ -702,6 +707,8 @@ 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;
}
@@ -723,6 +730,8 @@ 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;
}