[PATCH v2 1/8] drm/bridge: synopsis: Add mode_fixup and bridge timings support

[H. Nikolaus Schaller]

From: Paul Boddie <p...@boddie.org.uk>

The platform-specific configuration structure is augmented with
mode_fixup and timings members so that specialisations of the
Synopsys driver can introduce mode flags and bus flags.

Signed-off-by: Paul Boddie <p...@boddie.org.uk>
Signed-off-by: Ezequiel Garcia <ezequ...@collabora.com>
Signed-off-by: H. Nikolaus Schaller <h...@goldelico.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 16 ++++++++++++++++
 include/drm/bridge/dw_hdmi.h              |  5 +++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c 
b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index e7c7c9b9c646f..e8499eb11328c 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2810,6 +2810,19 @@ dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
        return mode_status;
 }
 
+static bool
+dw_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
+                         const struct drm_display_mode *mode,
+                         struct drm_display_mode *adjusted_mode)
+{
+       struct dw_hdmi *hdmi = bridge->driver_private;
+
+       if (hdmi->plat_data->mode_fixup)
+               return hdmi->plat_data->mode_fixup(bridge, mode, adjusted_mode);
+
+       return true;
+}
+
 static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
                                    const struct drm_display_mode *orig_mode,
                                    const struct drm_display_mode *mode)
@@ -2883,6 +2896,7 @@ static const struct drm_bridge_funcs dw_hdmi_bridge_funcs 
= {
        .atomic_disable = dw_hdmi_bridge_atomic_disable,
        .mode_set = dw_hdmi_bridge_mode_set,
        .mode_valid = dw_hdmi_bridge_mode_valid,
+       .mode_fixup = dw_hdmi_bridge_mode_fixup,
        .detect = dw_hdmi_bridge_detect,
        .get_edid = dw_hdmi_bridge_get_edid,
 };
@@ -3364,6 +3378,8 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device 
*pdev,
 #ifdef CONFIG_OF
        hdmi->bridge.of_node = pdev->dev.of_node;
 #endif
+       if (plat_data->timings)
+               hdmi->bridge.timings = plat_data->timings;
 
        memset(&pdevinfo, 0, sizeof(pdevinfo));
        pdevinfo.parent = dev;
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 6a5716655619b..677137445d534 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -8,6 +8,7 @@
 
 #include <sound/hdmi-codec.h>
 
+struct drm_bridge;
 struct drm_display_info;
 struct drm_display_mode;
 struct drm_encoder;
@@ -140,6 +141,10 @@ struct dw_hdmi_plat_data {
        enum drm_mode_status (*mode_valid)(struct dw_hdmi *hdmi, void *data,
                                           const struct drm_display_info *info,
                                           const struct drm_display_mode *mode);
+       bool (*mode_fixup)(struct drm_bridge *bridge,
+                          const struct drm_display_mode *mode,
+                          struct drm_display_mode *adjusted_mode);
+       const struct drm_bridge_timings *timings;
 
        /* Vendor PHY support */
        const struct dw_hdmi_phy_ops *phy_ops;
-- 
2.31.1