linux-kernel - Re: [PATCH v2] drm/client: Detect when ACPI lid is closed during initialization

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Message-ID: <cff85fde-01d5-4487-ba4d-39c3b787a62b@amd.com>
Date: Wed, 29 May 2024 09:34:34 -0500
From: Mario Limonciello <mario.limonciello@....com>
To: Alex Deucher <alexdeucher@...il.com>,
 Jani Nikula <jani.nikula@...ux.intel.com>
Cc: dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
 linux-kernel@...r.kernel.org, Chris Bainbridge <chris.bainbridge@...il.com>,
 hughsient@...il.com
Subject: Re: [PATCH v2] drm/client: Detect when ACPI lid is closed during
 initialization

On 5/29/2024 08:55, Alex Deucher wrote:
> On Wed, May 29, 2024 at 9:51 AM Jani Nikula <jani.nikula@...ux.intel.com> wrote:
>>
>> On Wed, 29 May 2024, Alex Deucher <alexdeucher@...il.com> wrote:
>>> On Tue, May 28, 2024 at 5:03 PM Mario Limonciello
>>> <mario.limonciello@....com> wrote:
>>>>
>>>> If the lid on a laptop is closed when eDP connectors are populated
>>>> then it remains enabled when the initial framebuffer configuration
>>>> is built.
>>>>
>>>> When creating the initial framebuffer configuration detect the ACPI
>>>> lid status and if it's closed disable any eDP connectors.
>>>>
>>>> Reported-by: Chris Bainbridge <chris.bainbridge@...il.com>
>>>> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3349
>>>> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
>>>
>>> Reviewed-by: Alex Deucher <alexander.deucher@....com>
>>>
>>> Do you have drm-misc access or do you need someone to apply this for you?
>>
>> I've bounced this to intel-gfx and intel-xe lists to get CI testing. I'd
>> appreciate holding off on merging until we have results.
> 
> Sure.

Thanks for the review and pushing it to CI testing infra.

I don't have any drm-misc access so if everything looks good then one of 
you guys please merge it for me.

Thanks!

> 
> Alex
> 
>>
>> Thanks,
>> Jani.
>>
>>>
>>> Alex
>>>
>>>> ---
>>>> Cc: hughsient@...il.com
>>>> v1->v2:
>>>>   * Match LVDS as well
>>>> ---
>>>>   drivers/gpu/drm/drm_client_modeset.c | 30 ++++++++++++++++++++++++++++
>>>>   1 file changed, 30 insertions(+)
>>>>
>>>> diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
>>>> index 31af5cf37a09..0b0411086e76 100644
>>>> --- a/drivers/gpu/drm/drm_client_modeset.c
>>>> +++ b/drivers/gpu/drm/drm_client_modeset.c
>>>> @@ -8,6 +8,7 @@
>>>>    */
>>>>
>>>>   #include "drm/drm_modeset_lock.h"
>>>> +#include <acpi/button.h>
>>>>   #include <linux/module.h>
>>>>   #include <linux/mutex.h>
>>>>   #include <linux/slab.h>
>>>> @@ -257,6 +258,34 @@ static void drm_client_connectors_enabled(struct drm_connector **connectors,
>>>>                  enabled[i] = drm_connector_enabled(connectors[i], false);
>>>>   }
>>>>
>>>> +static void drm_client_match_edp_lid(struct drm_device *dev,
>>>> +                                    struct drm_connector **connectors,
>>>> +                                    unsigned int connector_count,
>>>> +                                    bool *enabled)
>>>> +{
>>>> +       int i;
>>>> +
>>>> +       for (i = 0; i < connector_count; i++) {
>>>> +               struct drm_connector *connector = connectors[i];
>>>> +
>>>> +               switch (connector->connector_type) {
>>>> +               case DRM_MODE_CONNECTOR_LVDS:
>>>> +               case DRM_MODE_CONNECTOR_eDP:
>>>> +                       if (!enabled[i])
>>>> +                               continue;
>>>> +                       break;
>>>> +               default:
>>>> +                       continue;
>>>> +               }
>>>> +
>>>> +               if (!acpi_lid_open()) {
>>>> +                       drm_dbg_kms(dev, "[CONNECTOR:%d:%s] lid is closed, disabling\n",
>>>> +                                   connector->base.id, connector->name);
>>>> +                       enabled[i] = false;
>>>> +               }
>>>> +       }
>>>> +}
>>>> +
>>>>   static bool drm_client_target_cloned(struct drm_device *dev,
>>>>                                       struct drm_connector **connectors,
>>>>                                       unsigned int connector_count,
>>>> @@ -844,6 +873,7 @@ int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width,
>>>>                  memset(crtcs, 0, connector_count * sizeof(*crtcs));
>>>>                  memset(offsets, 0, connector_count * sizeof(*offsets));
>>>>
>>>> +               drm_client_match_edp_lid(dev, connectors, connector_count, enabled);
>>>>                  if (!drm_client_target_cloned(dev, connectors, connector_count, modes,
>>>>                                                offsets, enabled, width, height) &&
>>>>                      !drm_client_target_preferred(dev, connectors, connector_count, modes,
>>>> --
>>>> 2.43.0
>>>>
>>
>> --
>> Jani Nikula, Intel