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drm/amdgpu: simplify ATIF backlight handling

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Just register the a pointer to the backlight device and use
that. Unifies the DC and non-DC handling.

Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-05-05 15:44:57 -04:00
parent ba806f98f8
commit 97d798b276
1 changed files with 29 additions and 42 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

51
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
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@ -64,7 +64,9 @@ struct amdgpu_atif {
struct amdgpu_atif_notifications notifications;
struct amdgpu_atif_functions functions;
struct amdgpu_atif_notification_cfg notification_cfg;
struct amdgpu_encoder *encoder_for_bl;
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
struct backlight_device *bd;
#endif
struct amdgpu_dm_backlight_caps backlight_caps;
};
@ -444,45 +446,21 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count);
if ((req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) &&
!amdgpu_device_has_dc_support(adev)) {
struct amdgpu_encoder *enc = atif->encoder_for_bl;
if (enc) {
struct amdgpu_encoder_atom_dig *dig = enc->enc_priv;
if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) {
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
if (atif->bd) {
DRM_DEBUG_DRIVER("Changing brightness to %d\n",
req.backlight_level);
amdgpu_display_backlight_set_level(adev, enc, req.backlight_level);
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
backlight_force_update(dig->bl_dev,
BACKLIGHT_UPDATE_HOTKEY);
#endif
}
}
#if defined(CONFIG_DRM_AMD_DC)
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
if ((req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) &&
amdgpu_device_has_dc_support(adev)) {
struct amdgpu_display_manager *dm = &adev->dm;
struct backlight_device *bd = dm->backlight_dev;
if (bd) {
DRM_DEBUG_DRIVER("Changing brightness to %d\n",
req.backlight_level);
/*
* XXX backlight_device_set_brightness() is
* hardwired to post BACKLIGHT_UPDATE_SYSFS.
* It probably should accept 'reason' parameter.
*/
backlight_device_set_brightness(bd, req.backlight_level);
}
backlight_device_set_brightness(atif->bd, req.backlight_level);
}
#endif
#endif
}
if (req.pending & ATIF_DGPU_DISPLAY_EVENT) {
if (adev->flags & AMD_IS_PX) {
pm_runtime_get_sync(adev->ddev->dev);
@ -829,6 +807,13 @@ int amdgpu_acpi_init(struct amdgpu_device *adev)
adev->atif = atif;
if (atif->notifications.brightness_change) {
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
if (amdgpu_device_has_dc_support(adev)) {
#if defined(CONFIG_DRM_AMD_DC)
struct amdgpu_display_manager *dm = &adev->dm;
atif->bd = dm->backlight_dev;
#endif
} else {
struct drm_encoder *tmp;
/* Find the encoder controlling the brightness */
@ -840,12 +825,14 @@ int amdgpu_acpi_init(struct amdgpu_device *adev)
enc->enc_priv) {
struct amdgpu_encoder_atom_dig *dig = enc->enc_priv;
if (dig->bl_dev) {
atif->encoder_for_bl = enc;
atif->bd = dig->bl_dev;
break;
}
}
}
}
}
#endif
if (atif->functions.sbios_requests && !atif->functions.system_params) {
/* XXX check this workraround, if sbios request function is