diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-06-16 11:50:57 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-07-04 21:05:30 +0300 |
| commit | a7977d5cd9dbf4c9e8706d9e254655ed422859f0 (patch) | |
| tree | 7dc55a9cdc4a96009d43e5424f8f69b484e692e1 /drivers/gpu/drm/msm/hdmi/hdmi.c | |
| parent | 089008b698f8c4a42e5e73b0a5628509b608b8da (diff) | |
| download | linux-a7977d5cd9dbf4c9e8706d9e254655ed422859f0.tar.xz | |
drm/msm/hdmi: support attaching the "next" bridge
There might be a chain of bridges attached to the HDMI node
(including but not limited to the display-connector bridge). Add support
for attaching them right to the HDMI bridge chain.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/489709/
Link: https://lore.kernel.org/r/20220616085057.432353-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/hdmi/hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/msm/hdmi/hdmi.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 6acc17e0efc1..93fe61b86967 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -9,6 +9,7 @@ #include <linux/of_gpio.h> #include <drm/drm_bridge_connector.h> +#include <drm/drm_of.h> #include <sound/hdmi-codec.h> #include "hdmi.h" @@ -133,6 +134,10 @@ static struct hdmi *msm_hdmi_init(struct platform_device *pdev) hdmi->config = config; spin_lock_init(&hdmi->reg_lock); + ret = drm_of_find_panel_or_bridge(pdev->dev.of_node, 1, 0, NULL, &hdmi->next_bridge); + if (ret && ret != -ENODEV) + goto fail; + hdmi->mmio = msm_ioremap(pdev, config->mmio_name); if (IS_ERR(hdmi->mmio)) { ret = PTR_ERR(hdmi->mmio); @@ -308,6 +313,15 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi, goto fail; } + if (hdmi->next_bridge) { + ret = drm_bridge_attach(hdmi->encoder, hdmi->next_bridge, hdmi->bridge, + DRM_BRIDGE_ATTACH_NO_CONNECTOR); + if (ret) { + DRM_DEV_ERROR(dev->dev, "failed to attach next HDMI bridge: %d\n", ret); + goto fail; + } + } + hdmi->connector = drm_bridge_connector_init(hdmi->dev, encoder); if (IS_ERR(hdmi->connector)) { ret = PTR_ERR(hdmi->connector); |