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

[Jani Nikula]

On Wed, 29 May 2024, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Tue, May 28, 2024 at 5:03 PM Mario Limonciello
> <mario.limonciello at amd.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 at gmail.com>
>> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3349
>> Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>
>
> Reviewed-by: Alex Deucher <alexander.deucher at amd.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.

Thanks,
Jani.

>
> Alex
>
>> ---
>> Cc: hughsient at gmail.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