[v4] i2c: omap: Add calls for pinctrl state select
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Message ID 1430917624-18164-1-git-send-email-pascal.huerst@gmail.com
State New
Headers show

Commit Message

Pascal Huerst May 6, 2015, 1:07 p.m. UTC
From: Pascal Huerst <pascal.huerst@gmail.com>

This adds calls to pinctrl subsystem in order to switch pin states
on suspend/resume if you provide a "sleep" state in DT.

If no "sleep" state is provided in the DT, these calls turn
to NOPs, so we don't need error checking here.

Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com>
Reviewed-by: Sekhar Nori <nsekhar@ti.com>
---
 drivers/i2c/busses/i2c-omap.c | 5 +++++
 1 file changed, 5 insertions(+)

--
2.1.0

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Comments

Wolfram Sang May 12, 2015, 3:47 p.m. UTC | #1
On Wed, May 06, 2015 at 03:07:04PM +0200, pascal.huerst@gmail.com wrote:
> From: Pascal Huerst <pascal.huerst@gmail.com>
> 
> This adds calls to pinctrl subsystem in order to switch pin states
> on suspend/resume if you provide a "sleep" state in DT.
> 
> If no "sleep" state is provided in the DT, these calls turn
> to NOPs, so we don't need error checking here.
> 
> Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com>
> Reviewed-by: Sekhar Nori <nsekhar@ti.com>

Applied to for-next, thanks!

The mail header does not contain your full name, you might want to fix
that...
Wolfram Sang May 12, 2015, 4:07 p.m. UTC | #2
> The mail header does not contain your full name, you might want to fix
> that...

Life is great! I just had the same flaw on my newly set up secondary
laptop :)

Patch
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diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 0e89419..8261941 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -38,6 +38,7 @@ 
 #include <linux/slab.h>
 #include <linux/i2c-omap.h>
 #include <linux/pm_runtime.h>
+#include <linux/pinctrl/consumer.h>

 /* I2C controller revisions */
 #define OMAP_I2C_OMAP1_REV_2		0x20
@@ -1423,6 +1424,8 @@  static int omap_i2c_runtime_suspend(struct device *dev)
 		omap_i2c_read_reg(_dev, OMAP_I2C_STAT_REG);
 	}

+	pinctrl_pm_select_sleep_state(dev);
+
 	return 0;
 }

@@ -1431,6 +1434,8 @@  static int omap_i2c_runtime_resume(struct device *dev)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct omap_i2c_dev *_dev = platform_get_drvdata(pdev);

+	pinctrl_pm_select_default_state(dev);
+
 	if (!_dev->regs)
 		return 0;