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Subject[PATCH 06/15] drm/rockchip: vop: limit resolution width to 3840
Date
Using a destination width that is more then 3840 pixels
is not supported in scl_vop_cal_scl_fac().

Work around this limitation by filtering all modes with
a width above 3840 pixels.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
---
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index d04b3492bdac..f181897cbfad 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1036,6 +1036,15 @@ static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
spin_unlock_irqrestore(&vop->irq_lock, flags);
}

+enum drm_mode_status vop_crtc_mode_valid(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode)
+{
+ if (mode->hdisplay > 3840)
+ return MODE_BAD_HVALUE;
+
+ return MODE_OK;
+}
+
static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
@@ -1377,6 +1386,7 @@ static void vop_crtc_atomic_flush(struct drm_crtc *crtc,
}

static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
+ .mode_valid = vop_crtc_mode_valid,
.mode_fixup = vop_crtc_mode_fixup,
.atomic_check = vop_crtc_atomic_check,
.atomic_begin = vop_crtc_atomic_begin,
--
2.17.1
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