* [PATCH] i2c: mediatek: add i2c resume support
@ 2015-10-06 9:22 ` Eddie Huang
0 siblings, 0 replies; 5+ messages in thread
From: Eddie Huang @ 2015-10-06 9:22 UTC (permalink / raw)
To: Wolfram Sang
Cc: Matthias Brugger, Liguo Zhang, Sascha Hauer, Xudong Chen,
linux-i2c, linux-kernel, linux-arm-kernel, linux-mediatek,
srv_heupstream, Eddie Huang
From: Liguo Zhang <liguo.zhang@mediatek.com>
mt65xx i2c controller initial setting will be cleared after system suspend,
so we should init mt65xx i2c controller again when system resume.
Signed-off-by: Liguo Zhang <liguo.zhang@mediatek.com>
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
---
drivers/i2c/busses/i2c-mt65xx.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
index c02e6c0..9b86716 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -728,11 +728,27 @@ static int mtk_i2c_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int mtk_i2c_resume(struct device *dev)
+{
+ struct mtk_i2c *i2c = dev_get_drvdata(dev);
+
+ mtk_i2c_init_hw(i2c);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops mtk_i2c_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, mtk_i2c_resume)
+};
+
static struct platform_driver mtk_i2c_driver = {
.probe = mtk_i2c_probe,
.remove = mtk_i2c_remove,
.driver = {
.name = I2C_DRV_NAME,
+ .pm = &mtk_i2c_pm,
.of_match_table = of_match_ptr(mtk_i2c_of_match),
},
};
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH] i2c: mediatek: add i2c resume support
@ 2015-10-06 9:22 ` Eddie Huang
0 siblings, 0 replies; 5+ messages in thread
From: Eddie Huang @ 2015-10-06 9:22 UTC (permalink / raw)
To: Wolfram Sang
Cc: Matthias Brugger, Liguo Zhang, Sascha Hauer, Xudong Chen,
linux-i2c, linux-kernel, linux-arm-kernel, linux-mediatek,
srv_heupstream, Eddie Huang
From: Liguo Zhang <liguo.zhang@mediatek.com>
mt65xx i2c controller initial setting will be cleared after system suspend,
so we should init mt65xx i2c controller again when system resume.
Signed-off-by: Liguo Zhang <liguo.zhang@mediatek.com>
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
---
drivers/i2c/busses/i2c-mt65xx.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
index c02e6c0..9b86716 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -728,11 +728,27 @@ static int mtk_i2c_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int mtk_i2c_resume(struct device *dev)
+{
+ struct mtk_i2c *i2c = dev_get_drvdata(dev);
+
+ mtk_i2c_init_hw(i2c);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops mtk_i2c_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, mtk_i2c_resume)
+};
+
static struct platform_driver mtk_i2c_driver = {
.probe = mtk_i2c_probe,
.remove = mtk_i2c_remove,
.driver = {
.name = I2C_DRV_NAME,
+ .pm = &mtk_i2c_pm,
.of_match_table = of_match_ptr(mtk_i2c_of_match),
},
};
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH] i2c: mediatek: add i2c resume support
@ 2015-10-06 9:22 ` Eddie Huang
0 siblings, 0 replies; 5+ messages in thread
From: Eddie Huang @ 2015-10-06 9:22 UTC (permalink / raw)
To: linux-arm-kernel
From: Liguo Zhang <liguo.zhang@mediatek.com>
mt65xx i2c controller initial setting will be cleared after system suspend,
so we should init mt65xx i2c controller again when system resume.
Signed-off-by: Liguo Zhang <liguo.zhang@mediatek.com>
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
---
drivers/i2c/busses/i2c-mt65xx.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
index c02e6c0..9b86716 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -728,11 +728,27 @@ static int mtk_i2c_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int mtk_i2c_resume(struct device *dev)
+{
+ struct mtk_i2c *i2c = dev_get_drvdata(dev);
+
+ mtk_i2c_init_hw(i2c);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops mtk_i2c_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, mtk_i2c_resume)
+};
+
static struct platform_driver mtk_i2c_driver = {
.probe = mtk_i2c_probe,
.remove = mtk_i2c_remove,
.driver = {
.name = I2C_DRV_NAME,
+ .pm = &mtk_i2c_pm,
.of_match_table = of_match_ptr(mtk_i2c_of_match),
},
};
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] i2c: mediatek: add i2c resume support
2015-10-06 9:22 ` Eddie Huang
@ 2015-10-23 19:59 ` Wolfram Sang
-1 siblings, 0 replies; 5+ messages in thread
From: Wolfram Sang @ 2015-10-23 19:59 UTC (permalink / raw)
To: Eddie Huang
Cc: Matthias Brugger, Liguo Zhang, Sascha Hauer, Xudong Chen,
linux-i2c, linux-kernel, linux-arm-kernel, linux-mediatek,
srv_heupstream
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On Tue, Oct 06, 2015 at 05:22:56PM +0800, Eddie Huang wrote:
> From: Liguo Zhang <liguo.zhang@mediatek.com>
>
> mt65xx i2c controller initial setting will be cleared after system suspend,
> so we should init mt65xx i2c controller again when system resume.
>
> Signed-off-by: Liguo Zhang <liguo.zhang@mediatek.com>
> Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
Applied to for-next, thanks!
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^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH] i2c: mediatek: add i2c resume support
@ 2015-10-23 19:59 ` Wolfram Sang
0 siblings, 0 replies; 5+ messages in thread
From: Wolfram Sang @ 2015-10-23 19:59 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Oct 06, 2015 at 05:22:56PM +0800, Eddie Huang wrote:
> From: Liguo Zhang <liguo.zhang@mediatek.com>
>
> mt65xx i2c controller initial setting will be cleared after system suspend,
> so we should init mt65xx i2c controller again when system resume.
>
> Signed-off-by: Liguo Zhang <liguo.zhang@mediatek.com>
> Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
Applied to for-next, thanks!
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^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2015-10-23 19:59 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2015-10-06 9:22 [PATCH] i2c: mediatek: add i2c resume support Eddie Huang
2015-10-06 9:22 ` Eddie Huang
2015-10-06 9:22 ` Eddie Huang
2015-10-23 19:59 ` Wolfram Sang
2015-10-23 19:59 ` Wolfram Sang
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