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| author | Boris Brezillon <boris.brezillon@collabora.com> | 2019-12-03 15:15:07 +0100 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@collabora.com> | 2019-12-09 10:02:45 +0100 |
| commit | 35a61fe9218a9d32a93447bdcca1d0f167cd0433 (patch) | |
| tree | 5c6cd23da83aac637ce749cfb6e0aaa8e49b9271 /drivers/gpu/drm/drm_probe_helper.c | |
| parent | fadf872d9d9274a3be34d8438e0f6bb465c8f98b (diff) | |
| download | linux-35a61fe9218a9d32a93447bdcca1d0f167cd0433.tar.gz | |
drm: Stop accessing encoder->bridge directly
We are about to replace the single-linked bridge list by a double-linked one based on list.h, leading to the suppression of the encoder->bridge field. But before we can do that we must provide a drm_bridge_chain_get_first_bridge() bridge helper and patch all drivers and core helpers to use it instead of directly accessing encoder->bridge. Note that we still have 2 drivers (VC4 and Exynos) manipulating the encoder->bridge field directly because they need to cut the bridge chain in order to control the enable/disable sequence. This is definitely not something we want to encourage, so let's keep those 2 oddities around until we find a better solution. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191203141515.3597631-4-boris.brezillon@collabora.com
Diffstat (limited to 'drivers/gpu/drm/drm_probe_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_probe_helper.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index c3ea722065c4..576b4b7dcd89 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -101,6 +101,7 @@ drm_mode_validate_pipeline(struct drm_display_mode *mode, /* Step 2: Validate against encoders and crtcs */ drm_connector_for_each_possible_encoder(connector, encoder) { + struct drm_bridge *bridge; struct drm_crtc *crtc; ret = drm_encoder_mode_valid(encoder, mode); @@ -112,7 +113,8 @@ drm_mode_validate_pipeline(struct drm_display_mode *mode, continue; } - ret = drm_bridge_chain_mode_valid(encoder->bridge, mode); + bridge = drm_bridge_chain_get_first_bridge(encoder); + ret = drm_bridge_chain_mode_valid(bridge, mode); if (ret != MODE_OK) { /* There is also no point in continuing for crtc check * here. */ |