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drm/rockchip: cdn-dp: check display mode with crtc mode valid

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Change-Id: I431ae8e56c18b827e1995ce0dec125c585d096f9
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
This commit is contained in:
Mark Yao
2017-01-22 15:46:48 +08:00
committed by Tao Huang
parent 1ef77372cd
commit 76b8672db3
1 changed files with 41 additions and 0 deletions
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41
drivers/gpu/drm/rockchip/cdn-dp-core.c
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@@ -289,6 +289,11 @@ static int cdn_dp_connector_mode_valid(struct drm_connector *connector,
struct cdn_dp_device *dp = connector_to_dp(connector);
struct drm_display_info *display_info = &dp->connector.display_info;
u32 requested, actual, rate, sink_max, source_max = 0;
struct drm_encoder *encoder = connector->encoder;
enum drm_mode_status status = MODE_OK;
struct drm_device *dev = connector->dev;
struct rockchip_drm_private *priv = dev->dev_private;
struct drm_crtc *crtc;
u8 lanes, bpc;
/* If DP is disconnected, every mode is invalid */
@@ -329,6 +334,42 @@ static int cdn_dp_connector_mode_valid(struct drm_connector *connector,
return MODE_CLOCK_HIGH;
}
if (!encoder) {
const struct drm_connector_helper_funcs *funcs;
funcs = connector->helper_private;
if (funcs->atomic_best_encoder)
encoder = funcs->atomic_best_encoder(connector,
connector->state);
else if (funcs->best_encoder)
encoder = funcs->best_encoder(connector);
else
encoder = drm_atomic_helper_best_encoder(connector);
}
if (!encoder || !encoder->possible_crtcs)
return MODE_BAD;
/*
* ensure all drm display mode can work, if someone want support more
* resolutions, please limit the possible_crtc, only connect to
* needed crtc.
*/
drm_for_each_crtc(crtc, connector->dev) {
int pipe = drm_crtc_index(crtc);
const struct rockchip_crtc_funcs *funcs =
priv->crtc_funcs[pipe];
if (!(encoder->possible_crtcs & drm_crtc_mask(crtc)))
continue;
if (!funcs || !funcs->mode_valid)
continue;
status = funcs->mode_valid(crtc, mode,
DRM_MODE_CONNECTOR_HDMIA);
if (status != MODE_OK)
return status;
}
return MODE_OK;
}