This patch removes unnecessary pm suspend/resume functions.
All kms sub drivers will be controlled by top of Exynos drm driver and connector dpms so these sub drivers shouldn't have their own pm interfaces.
Signed-off-by: Inki Dae inki.dae@samsung.com --- drivers/gpu/drm/exynos/exynos_dp_core.c | 23 ----------------------- 1 file changed, 23 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c index d66ade0..124fb9a 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c @@ -1383,28 +1383,6 @@ static int exynos_dp_remove(struct platform_device *pdev) return 0; }
-#ifdef CONFIG_PM_SLEEP -static int exynos_dp_suspend(struct device *dev) -{ - struct exynos_dp_device *dp = dev_get_drvdata(dev); - - exynos_dp_disable(&dp->encoder); - return 0; -} - -static int exynos_dp_resume(struct device *dev) -{ - struct exynos_dp_device *dp = dev_get_drvdata(dev); - - exynos_dp_enable(&dp->encoder); - return 0; -} -#endif - -static const struct dev_pm_ops exynos_dp_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(exynos_dp_suspend, exynos_dp_resume) -}; - static const struct of_device_id exynos_dp_match[] = { { .compatible = "samsung,exynos5-dp" }, {}, @@ -1417,7 +1395,6 @@ struct platform_driver dp_driver = { .driver = { .name = "exynos-dp", .owner = THIS_MODULE, - .pm = &exynos_dp_pm_ops, .of_match_table = exynos_dp_match, }, };
Hi Inki,
On 30 September 2015 at 12:21, Inki Dae inki.dae@samsung.com wrote:
This patch removes unnecessary pm suspend/resume functions.
All kms sub drivers will be controlled by top of Exynos drm driver and connector dpms so these sub drivers shouldn't have their own pm interfaces.
Not sure if you've noticed but this patch seems to do the opposite of what Gustavo was aiming with an earlier series [1].
Cheers, Emil
[1] http://lists.freedesktop.org/archives/dri-devel/2015-September/089800.html
Hi Emil,
On 2015년 09월 30일 21:19, Emil Velikov wrote:
Hi Inki,
On 30 September 2015 at 12:21, Inki Dae inki.dae@samsung.com wrote:
This patch removes unnecessary pm suspend/resume functions.
All kms sub drivers will be controlled by top of Exynos drm driver and connector dpms so these sub drivers shouldn't have their own pm interfaces.
Not sure if you've noticed but this patch seems to do the opposite of what Gustavo was aiming with an earlier series [1].
I removed just the interfaces related to sleep pm not runtime pm. From long ago, Linux DRM drivers - especially ARM DRM drivers - have been stepping forward to a integrated DRM driver so it'd be reasonable for sleep pm operations of all KMS drivers are controlled by top of DRM driver. It means that Exynos drm driver has already sleep pm interfaces.
However, I think a power domain of each kms device couldn't be controlled by the top in case of ARM SoC because kms devices can use a different power domain each other according to Vendor SoC so runtime pm should be controlled by each kms driver, which will be triggered by DRM top.
And Gustavo's patch set you mentioned - now being reviewed - will add only runtime pm interfaces to each kms driver.
Thanks, Inki Dae
Cheers, Emil
[1] http://lists.freedesktop.org/archives/dri-devel/2015-September/089800.html
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On 30 September 2015 at 14:46, Inki Dae inki.dae@samsung.com wrote:
Hi Emil,
On 2015년 09월 30일 21:19, Emil Velikov wrote:
Hi Inki,
On 30 September 2015 at 12:21, Inki Dae inki.dae@samsung.com wrote:
This patch removes unnecessary pm suspend/resume functions.
All kms sub drivers will be controlled by top of Exynos drm driver and connector dpms so these sub drivers shouldn't have their own pm interfaces.
Not sure if you've noticed but this patch seems to do the opposite of what Gustavo was aiming with an earlier series [1].
I removed just the interfaces related to sleep pm not runtime pm. From long ago, Linux DRM drivers - especially ARM DRM drivers - have been stepping forward to a integrated DRM driver so it'd be reasonable for sleep pm operations of all KMS drivers are controlled by top of DRM driver. It means that Exynos drm driver has already sleep pm interfaces.
However, I think a power domain of each kms device couldn't be controlled by the top in case of ARM SoC because kms devices can use a different power domain each other according to Vendor SoC so runtime pm should be controlled by each kms driver, which will be triggered by DRM top.
And Gustavo's patch set you mentioned - now being reviewed - will add only runtime pm interfaces to each kms driver.
Ack. Seems like I misread your patch. Thank you for the comprehensive answer and apologies for the noise.
Thanks Emil
Hi Inki,
2015-09-30 Inki Dae inki.dae@samsung.com:
This patch removes unnecessary pm suspend/resume functions.
All kms sub drivers will be controlled by top of Exynos drm driver and connector dpms so these sub drivers shouldn't have their own pm interfaces.
Signed-off-by: Inki Dae inki.dae@samsung.com
drivers/gpu/drm/exynos/exynos_dp_core.c | 23 ----------------------- 1 file changed, 23 deletions(-)
This sounds reasonable to me.
Reviewed-by: Gustavo Padovan gustavo.padovan@collabora.co.uk
Gustavo
dri-devel@lists.freedesktop.org
-
Emil Velikov -
Gustavo Padovan -
Inki Dae