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drm/rockchip: dw_hdmi: check display mode with crtc mode valid

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Change-Id: I23470e46b97169da0b59153dfc0835833f1aa549
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
This commit is contained in:
Mark Yao
2017-01-22 15:54:24 +08:00
committed by Huang, Tao
parent 7e3e0c5e2e
commit 5134d8df07
1 changed files with 41 additions and 2 deletions
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43
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
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@@ -267,6 +267,11 @@ dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
{
int pclk = mode->clock * 1000;
int num_rates = ARRAY_SIZE(dw_hdmi_rates);
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;
int i;
/*
@@ -282,10 +287,44 @@ dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
if ((pclk >= dw_hdmi_rates[i] - slop) &&
(pclk <= dw_hdmi_rates[i] + slop))
return MODE_OK;
return MODE_BAD;
}
return MODE_BAD;
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
encoder = funcs->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 status;
}
static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = {