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drm/amd/display: Make FBC work without fbdev emulation 

Previously, FBC dynamic allocation relied on connector modes
populated during dm init. This is only the case if
DRM_FBDEV_EMULATION config flag is enabled.
Moving fbc allocation from dm_late_init() to
amdgpu_dm_connector_get_modes() where actual modes init happens.

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Shirish Shankarappa <Shirish.S@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li 2018-02-06 18:47:26 -05:00 committed by Alex Deucher
parent b0c4e97752
commit 3e332d3a5a
1 changed files with 15 additions and 23 deletions
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38
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -348,35 +348,28 @@ static void hotplug_notify_work_func(struct work_struct *work)
#if defined(CONFIG_DRM_AMD_DC_FBC)
/* Allocate memory for FBC compressed data */
static void amdgpu_dm_fbc_init(struct amdgpu_device *adev)
static void amdgpu_dm_fbc_init(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct amdgpu_device *adev = dev->dev_private;
struct dm_comressor_info *compressor = &adev->dm.compressor;
struct drm_connector *conn;
struct drm_device *dev = adev->ddev;
struct amdgpu_dm_connector *aconn = to_amdgpu_dm_connector(connector);
struct drm_display_mode *mode;
unsigned long max_size = 0;
if (adev->dm.dc->fbc_compressor == NULL)
return;
if (aconn->dc_link->connector_signal != SIGNAL_TYPE_EDP)
return;
if (compressor->bo_ptr)
return;
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
/* For eDP connector find a mode requiring max size */
list_for_each_entry(conn,
&dev->mode_config.connector_list, head) {
struct amdgpu_dm_connector *aconn;
aconn = to_amdgpu_dm_connector(conn);
if (aconn->dc_link->connector_signal == SIGNAL_TYPE_EDP) {
struct drm_display_mode *mode;
list_for_each_entry(mode, &conn->modes, head) {
if (max_size < mode->hdisplay * mode->vdisplay)
max_size = mode->htotal * mode->vtotal;
}
}
list_for_each_entry(mode, &connector->modes, head) {
if (max_size < mode->htotal * mode->vtotal)
max_size = mode->htotal * mode->vtotal;
}
if (max_size) {
@ -393,7 +386,6 @@ static void amdgpu_dm_fbc_init(struct amdgpu_device *adev)
}
drm_modeset_unlock(&dev->mode_config.connection_mutex);
}
#endif
@ -571,9 +563,6 @@ static int dm_late_init(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
#if defined(CONFIG_DRM_AMD_DC_FBC)
amdgpu_dm_fbc_init(adev);
#endif
return detect_mst_link_for_all_connectors(adev->ddev);
}
@ -3380,9 +3369,12 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
struct edid *edid = amdgpu_dm_connector->edid;
encoder = helper->best_encoder(connector);
amdgpu_dm_connector_ddc_get_modes(connector, edid);
amdgpu_dm_connector_add_common_modes(encoder, connector);
#if defined(CONFIG_DRM_AMD_DC_FBC)
amdgpu_dm_fbc_init(connector);
#endif
return amdgpu_dm_connector->num_modes;
}