From: Harry Wentland <harry.wentland@amd.com>
To: Mario Limonciello <mario.limonciello@amd.com>,
amd-gfx@lists.freedesktop.org
Cc: Gergo Koteles <soyer@irl.hu>
Subject: Re: [PATCH] drm/amd/display: Don't register panel_power_savings on OLED panels
Date: Mon, 13 May 2024 07:06:46 -0400 [thread overview]
Message-ID: <a45c7e08-2a8b-46fd-9be1-45079c72b70c@amd.com> (raw)
In-Reply-To: <20240509170524.34811-1-mario.limonciello@amd.com>
On 2024-05-09 13:05, Mario Limonciello wrote:
> OLED panels don't support the ABM, they shouldn't offer the
> panel_power_savings attribute to the user. Check whether aux BL
> control support was enabled to decide whether to offer it.
>
> Reported-by: Gergo Koteles <soyer@irl.hu>
> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3359
> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Harry
> ---
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 29 ++++++++++++++++---
> 1 file changed, 25 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 3054bf79fc99..ce2ec857b8a6 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -6532,12 +6532,34 @@ static const struct attribute_group amdgpu_group = {
> .attrs = amdgpu_attrs
> };
>
> +static bool
> +amdgpu_dm_should_create_sysfs(struct amdgpu_dm_connector *amdgpu_dm_connector)
> +{
> + if (amdgpu_dm_abm_level >= 0)
> + return false;
> +
> + if (amdgpu_dm_connector->base.connector_type != DRM_MODE_CONNECTOR_eDP)
> + return false;
> +
> + /* check for OLED panels */
> + if (amdgpu_dm_connector->bl_idx >= 0) {
> + struct drm_device *drm = amdgpu_dm_connector->base.dev;
> + struct amdgpu_display_manager *dm = &drm_to_adev(drm)->dm;
> + struct amdgpu_dm_backlight_caps *caps;
> +
> + caps = &dm->backlight_caps[amdgpu_dm_connector->bl_idx];
> + if (caps->aux_support)
> + return false;
> + }
> +
> + return true;
> +}
> +
> static void amdgpu_dm_connector_unregister(struct drm_connector *connector)
> {
> struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector);
>
> - if (connector->connector_type == DRM_MODE_CONNECTOR_eDP &&
> - amdgpu_dm_abm_level < 0)
> + if (amdgpu_dm_should_create_sysfs(amdgpu_dm_connector))
> sysfs_remove_group(&connector->kdev->kobj, &amdgpu_group);
>
> drm_dp_aux_unregister(&amdgpu_dm_connector->dm_dp_aux.aux);
> @@ -6644,8 +6666,7 @@ amdgpu_dm_connector_late_register(struct drm_connector *connector)
> to_amdgpu_dm_connector(connector);
> int r;
>
> - if (connector->connector_type == DRM_MODE_CONNECTOR_eDP &&
> - amdgpu_dm_abm_level < 0) {
> + if (amdgpu_dm_should_create_sysfs(amdgpu_dm_connector)) {
> r = sysfs_create_group(&connector->kdev->kobj,
> &amdgpu_group);
> if (r)
prev parent reply other threads:[~2024-05-13 11:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-09 17:05 [PATCH] drm/amd/display: Don't register panel_power_savings on OLED panels Mario Limonciello
2024-05-09 20:55 ` Gergo Koteles
2024-05-13 11:06 ` Harry Wentland [this message]
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