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authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2016-11-28 18:59:08 +0300
committerArchit Taneja <architt@codeaurora.org>2016-12-18 14:01:45 +0300
commit3bb80f249525c059572d4bc89ac77ac2e511bcbe (patch)
tree4c67445f057de2a7bbffbbe9ce004bbf1ebd0a4a /drivers/gpu/drm/mediatek/mtk_hdmi.c
parent2407d1dc04789bfb2f39d248644981d2233feb0e (diff)
downloadlinux-3bb80f249525c059572d4bc89ac77ac2e511bcbe.tar.xz
drm: bridge: Link encoder and bridge in core code
Instead of linking encoders and bridges in every driver (and getting it wrong half of the time, as many drivers forget to set the drm_bridge encoder pointer), do so in core code. The drm_bridge_attach() function needs the encoder and optional previous bridge to perform that task, update all the callers. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Stefan Agner <stefan@agner.ch> # For DCU Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> # For atmel-hlcdc Acked-by: Vincent Abriou <vincent.abriou@st.com> # For STI Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> # For sun4i Acked-by: Xinliang Liu <z.liuxinliang@hisilicon.com> # For hisilicon Acked-by: Jyri Sarha <jsarha@ti.com> # For tilcdc Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/1481709550-29226-4-git-send-email-laurent.pinchart+renesas@ideasonboard.com
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_hdmi.c')
-rw-r--r--drivers/gpu/drm/mediatek/mtk_hdmi.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 0e8c4d9af340..c26251260b83 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -149,6 +149,7 @@ struct hdmi_audio_param {
struct mtk_hdmi {
struct drm_bridge bridge;
+ struct drm_bridge *next_bridge;
struct drm_connector conn;
struct device *dev;
struct phy *phy;
@@ -1314,9 +1315,9 @@ static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge)
return ret;
}
- if (bridge->next) {
- bridge->next->encoder = bridge->encoder;
- ret = drm_bridge_attach(bridge->encoder->dev, bridge->next);
+ if (hdmi->next_bridge) {
+ ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
+ bridge);
if (ret) {
dev_err(hdmi->dev,
"Failed to attach external bridge: %d\n", ret);
@@ -1510,8 +1511,8 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
of_node_put(ep);
if (!of_device_is_compatible(remote, "hdmi-connector")) {
- hdmi->bridge.next = of_drm_find_bridge(remote);
- if (!hdmi->bridge.next) {
+ hdmi->next_bridge = of_drm_find_bridge(remote);
+ if (!hdmi->next_bridge) {
dev_err(dev, "Waiting for external bridge\n");
of_node_put(remote);
return -EPROBE_DEFER;