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

From: Alex Deucher
Date: Wed May 29 2024 - 09:55:23 EST


On Wed, May 29, 2024 at 9:51 AM Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:
>
> On Wed, 29 May 2024, Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
> > On Tue, May 28, 2024 at 5:03 PM Mario Limonciello
> > <mario.limonciello@xxxxxxx> 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@xxxxxxxxx>
> >> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3349
> >> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> >
> > Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> >
> > 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.

Alex

>
> Thanks,
> Jani.
>
> >
> > Alex
> >
> >> ---
> >> Cc: hughsient@xxxxxxxxx
> >> 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