Re: [PATCH] fbdev: bfin-lq035q1-fb: Use dev_pm_ops

[Jingoo Han <jg1.han@samsung.com>]

On Thursday, May 30, 2013 4:20 AM, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 16:24 Wed 29 May     , Michael Hennerich wrote:
> > On 05/29/2013 02:17 PM, Lars-Peter Clausen wrote:
> > >Use dev_pm_ops instead of the legacy suspend/resume callbacks.
> > >
> > >Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
> > Acked-by: Michael Hennerich <michael.hennerich@analog.com>
> > >---
> > >  drivers/video/bfin-lq035q1-fb.c | 22 ++++++++++++++--------
> > >  1 file changed, 14 insertions(+), 8 deletions(-)
> > >
> > >diff --git a/drivers/video/bfin-lq035q1-fb.c b/drivers/video/bfin-lq035q1-fb.c
> > >index 29d8c04..6084c17 100644
> > >--- a/drivers/video/bfin-lq035q1-fb.c
> > >+++ b/drivers/video/bfin-lq035q1-fb.c
> > >@@ -170,16 +170,19 @@ static int lq035q1_spidev_remove(struct spi_device *spi)
> > >  	return lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_SHUT);
> > >  }
> > >-#ifdef CONFIG_PM
> > >-static int lq035q1_spidev_suspend(struct spi_device *spi, pm_message_t state)
> > >+#ifdef CONFIG_PM_SLEEP
> > >+static int lq035q1_spidev_suspend(struct device *dev)
> > >  {
> > >+	struct spi_device *spi = to_spi_device(dev);
> > >+
> > >  	return lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_SHUT);
> > >  }
> > >-static int lq035q1_spidev_resume(struct spi_device *spi)
> > >+static int lq035q1_spidev_resume(struct device *dev)
> > >  {
> > >-	int ret;
> > >+	struct spi_device *spi = to_spi_device(dev);
> > >  	struct spi_control *ctl = spi_get_drvdata(spi);
> > >+	int ret;
> > >  	ret = lq035q1_control(spi, LQ035_DRIVER_OUTPUT_CTL, ctl->mode);
> > >  	if (ret)
> > >@@ -187,9 +190,13 @@ static int lq035q1_spidev_resume(struct spi_device *spi)
> > >  	return lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_ON);
> > >  }
> > >+
> > >+static SIMPLE_DEV_PM_OPS(lq035q1_spidev_pm_ops, lq035q1_spidev_suspend,
> > >+	lq035q1_spidev_resume);
> > >+#define LQ035Q1_SPIDEV_PM_OPS (&lq035q1_spidev_pm_ops)
> > >+
> > >  #else
> > >-# define lq035q1_spidev_suspend NULL
> > >-# define lq035q1_spidev_resume  NULL
> > >+#define LQ035Q1_SPIDEV_PM_OPS NULL
> > >  #endif
> we really need to ahve a macro like for DT of_match_ptr to drop the #else

Hi Jean-Christophe PLAGNIOL-VILLARD,

I submitted the following patch. :)
(https://patchwork.kernel.org/patch/2502971/)

--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -55,8 +55,10 @@  struct device;
 
 #ifdef CONFIG_PM
 extern const char power_group_name[];		/* = "power" */
+#define pm_ops_ptr(_ptr)	(_ptr)
 #else
 #define power_group_name	NULL
+#define pm_ops_ptr(_ptr)	NULL
 #endif


This patch was accepted by Rafael Wysocki, and will be merged to v3.11-rc1.


Best regards,
Jingoo Han

> 
> I known it's related to this patch but someone should do it
> 
> Rafael what do you think
> 
> Best Regards,
> J.
> > >  /* Power down all displays on reboot, poweroff or halt */
> > >@@ -708,8 +715,7 @@ static int bfin_lq035q1_probe(struct platform_device *pdev)
> > >  	info->spidrv.probe    = lq035q1_spidev_probe;
> > >  	info->spidrv.remove   = lq035q1_spidev_remove;
> > >  	info->spidrv.shutdown = lq035q1_spidev_shutdown;
> > >-	info->spidrv.suspend  = lq035q1_spidev_suspend;
> > >-	info->spidrv.resume   = lq035q1_spidev_resume;
> > >+	info->spidrv.driver.pm = LQ035Q1_SPIDEV_PM_OPS;
> > >  	ret = spi_register_driver(&info->spidrv);
> > >  	if (ret < 0) {
> >
> >
> > --
> > Greetings,
> > Michael
> >
> > --
> > Analog Devices GmbH      Wilhelm-Wagenfeld-Str. 6      80807 Muenchen
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> >
> >
> --
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