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Message-ID: <CAFqt6zYUN3XRsbhAgp8Lne9j1KTr5Ub0P+WrtLwOOfFPFRHFsA@mail.gmail.com>
Date: Thu, 2 Aug 2018 15:25:24 +0530
From: Souptick Joarder <jrdr.linux@...il.com>
To: Liviu Dudau <liviu.dudau@....com>
Cc: Brian Starkey <brian.starkey@....com>, malidp@...s.arm.com,
airlied@...ux.ie, Gustavo Padovan <gustavo@...ovan.org>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Sean Paul <seanpaul@...omium.org>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Ajit Linux <ajitn.linux@...il.com>,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH] drm: Convert drm_atomic_helper_suspend/resume()
On Wed, Aug 1, 2018 at 12:11 AM, Souptick Joarder <jrdr.linux@...il.com> wrote:
> On Tue, Jul 31, 2018 at 4:04 PM, Liviu Dudau <liviu.dudau@....com> wrote:
>> Hi Souptick,
>>
>> On Tue, Jul 31, 2018 at 12:31:37AM +0530, Souptick Joarder wrote:
>>> convert drm_atomic_helper_suspend/resume() to use
>>> drm_mode_config_helper_suspend/resume().
>>>
>>> With this conversion, drm_fbdev_cma_set_suspend_unlocked()
>>> will left with no consumer. So this function can be removed.
>>>
>>> Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
>>> Signed-off-by: Ajit Negi <ajitn.linux@...il.com>
>>> ---
>>> drivers/gpu/drm/arm/hdlcd_drv.c | 26 ++------------------------
>>> drivers/gpu/drm/drm_fb_cma_helper.c | 18 ------------------
>>> drivers/gpu/drm/rcar-du/rcar_du_drv.c | 21 ++-------------------
>>> include/drm/drm_fb_cma_helper.h | 2 --
>>> 4 files changed, 4 insertions(+), 63 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
>>> index feaa8bc..4e617e0 100644
>>> --- a/drivers/gpu/drm/arm/hdlcd_drv.c
>>> +++ b/drivers/gpu/drm/arm/hdlcd_drv.c
>>> @@ -427,37 +427,15 @@ static int hdlcd_remove(struct platform_device *pdev)
>>> static int __maybe_unused hdlcd_pm_suspend(struct device *dev)
>>> {
>>> struct drm_device *drm = dev_get_drvdata(dev);
>>> - struct hdlcd_drm_private *hdlcd = drm ? drm->dev_private : NULL;
>>>
>>> - if (!hdlcd)
>>> - return 0;
>>> -
>>> - drm_kms_helper_poll_disable(drm);
>>> - drm_fbdev_cma_set_suspend_unlocked(hdlcd->fbdev, 1);
>>> -
>>> - hdlcd->state = drm_atomic_helper_suspend(drm);
>>> - if (IS_ERR(hdlcd->state)) {
>>> - drm_fbdev_cma_set_suspend_unlocked(hdlcd->fbdev, 0);
>>> - drm_kms_helper_poll_enable(drm);
>>> - return PTR_ERR(hdlcd->state);
>>> - }
>>> -
>>> - return 0;
>>> + return drm_mode_config_helper_suspend(drm);
>>> }
>>>
>>> static int __maybe_unused hdlcd_pm_resume(struct device *dev)
>>> {
>>> struct drm_device *drm = dev_get_drvdata(dev);
>>> - struct hdlcd_drm_private *hdlcd = drm ? drm->dev_private : NULL;
>>> -
>>> - if (!hdlcd)
>>> - return 0;
>>>
>>> - drm_atomic_helper_resume(drm, hdlcd->state);
>>> - drm_fbdev_cma_set_suspend_unlocked(hdlcd->fbdev, 0);
>>> - drm_kms_helper_poll_enable(drm);
>>> -
>>> - return 0;
>>> + return drm_mode_config_helper_resume(drm);
>>> }
>>
>> This patch is similar to the one Noralf Trønnes submitted, and his is
>> also cleaning up the state variable in hdlcd_drm_private. The patch has
>> been queued as commit f69d9686e5d9 in git://linux-arm.org/linux-ld.git
>> for-upstream/hdlcd and I will send a pull request today for it.
>>
>> Best regards,
>> Liviu
>
> unable to clone this repository.
> can you please post the patchwork link ?
Liviu, is commit f69d9686e5d9 in
git://linux-arm.org/linux-ld.gitfor-upstream/hdlcd
contains only changes in drivers/gpu/drm/arm/hdlcd_drv.c driver ??
>
>>
>>>
>>> static SIMPLE_DEV_PM_OPS(hdlcd_pm_ops, hdlcd_pm_suspend, hdlcd_pm_resume);
>>> diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
>>> index 186d00a..f604a84 100644
>>> --- a/drivers/gpu/drm/drm_fb_cma_helper.c
>>> +++ b/drivers/gpu/drm/drm_fb_cma_helper.c
>>> @@ -529,21 +529,3 @@ void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, bool state)
>>> drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
>>> }
>>> EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
>>> -
>>> -/**
>>> - * drm_fbdev_cma_set_suspend_unlocked - wrapper around
>>> - * drm_fb_helper_set_suspend_unlocked
>>> - * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
>>> - * @state: desired state, zero to resume, non-zero to suspend
>>> - *
>>> - * Calls drm_fb_helper_set_suspend, which is a wrapper around
>>> - * fb_set_suspend implemented by fbdev core.
>>> - */
>>> -void drm_fbdev_cma_set_suspend_unlocked(struct drm_fbdev_cma *fbdev_cma,
>>> - bool state)
>>> -{
>>> - if (fbdev_cma)
>>> - drm_fb_helper_set_suspend_unlocked(&fbdev_cma->fb_helper,
>>> - state);
>>> -}
>>> -EXPORT_SYMBOL(drm_fbdev_cma_set_suspend_unlocked);
>>> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
>>> index 02aee6c..288220f 100644
>>> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
>>> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
>>> @@ -357,32 +357,15 @@ static void rcar_du_lastclose(struct drm_device *dev)
>>> static int rcar_du_pm_suspend(struct device *dev)
>>> {
>>> struct rcar_du_device *rcdu = dev_get_drvdata(dev);
>>> - struct drm_atomic_state *state;
>>>
>>> - drm_kms_helper_poll_disable(rcdu->ddev);
>>> - drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, true);
>>> -
>>> - state = drm_atomic_helper_suspend(rcdu->ddev);
>>> - if (IS_ERR(state)) {
>>> - drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false);
>>> - drm_kms_helper_poll_enable(rcdu->ddev);
>>> - return PTR_ERR(state);
>>> - }
>>> -
>>> - rcdu->suspend_state = state;
>>> -
>>> - return 0;
>>> + return drm_mode_config_helper_suspend(rcdu->ddev);
>>> }
>>>
>>> static int rcar_du_pm_resume(struct device *dev)
>>> {
>>> struct rcar_du_device *rcdu = dev_get_drvdata(dev);
>>>
>>> - drm_atomic_helper_resume(rcdu->ddev, rcdu->suspend_state);
>>> - drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false);
>>> - drm_kms_helper_poll_enable(rcdu->ddev);
>>> -
>>> - return 0;
>>> + return drm_mode_config_helper_resume(rcdu->ddev);
>>> }
>>> #endif
>>>
>>> diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
>>> index d532f88a..15c4569 100644
>>> --- a/include/drm/drm_fb_cma_helper.h
>>> +++ b/include/drm/drm_fb_cma_helper.h
>>> @@ -33,8 +33,6 @@ struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev,
>>> void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
>>> void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
>>> void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, bool state);
>>> -void drm_fbdev_cma_set_suspend_unlocked(struct drm_fbdev_cma *fbdev_cma,
>>> - bool state);
>>>
>>> struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
>>> unsigned int plane);
>>> --
>>> 1.9.1
>>>
>>
>> --
>> ====================
>> | I would like to |
>> | fix the world, |
>> | but they're not |
>> | giving me the |
>> \ source code! /
>> ---------------
>> ¯\_(ツ)_/¯
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