From: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
commit 43cb86799ff03e9819c07f37f72f80f8246ad7ed upstream.
With commit 222ec1618c3ace ("drm: Add aspect ratio parsing in DRM
layer") the drm core started honoring the picture_aspect_ratio field
when comparing two drm_display_modes. Prior to that it was ignored.
When the CVBS encoder driver was initially submitted there was no aspect
ratio check.
Switch from drm_mode_equal() to drm_mode_match() without
DRM_MODE_MATCH_ASPECT_RATIO to fix "kmscube" and X.org output using the
CVBS connector. When (for example) kmscube sets the output mode when
using the CVBS connector it passes HDMI_PICTURE_ASPECT_NONE, making the
drm_mode_equal() fail as it include the aspect ratio.
Prior to this patch kmscube reported:
failed to set mode: Invalid argument
The CVBS mode checking in the sun4i (drivers/gpu/drm/sun4i/sun4i_tv.c
sun4i_tv_mode_to_drm_mode) and ZTE (drivers/gpu/drm/zte/zx_tvenc.c
tvenc_mode_{pal,ntsc}) drivers don't set the "picture_aspect_ratio" at
all. The Meson VPU driver does not rely on the aspect ratio for the CVBS
output so we can safely decouple it from the hdmi_picture_aspect
setting.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 222ec1618c3ace ("drm: Add aspect ratio parsing in DRM layer")
Fixes: bbbe775ec5b5da ("drm: Add support for Amlogic Meson Graphic Controller")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
Acked-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
[narmstrong: squashed with drm: meson: venc: cvbs: deduplicate the meson_cvbs_mode lookup code]
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20191208171832.1064772-3-martin.blumenstingl@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/meson/meson_venc_cvbs.c | 48 ++++++++++++++++++--------------
1 file changed, 27 insertions(+), 21 deletions(-)
--- a/drivers/gpu/drm/meson/meson_venc_cvbs.c
+++ b/drivers/gpu/drm/meson/meson_venc_cvbs.c
@@ -64,6 +64,25 @@ struct meson_cvbs_mode meson_cvbs_modes[
},
};
+static const struct meson_cvbs_mode *
+meson_cvbs_get_mode(const struct drm_display_mode *req_mode)
+{
+ int i;
+
+ for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) {
+ struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
+
+ if (drm_mode_match(req_mode, &meson_mode->mode,
+ DRM_MODE_MATCH_TIMINGS |
+ DRM_MODE_MATCH_CLOCK |
+ DRM_MODE_MATCH_FLAGS |
+ DRM_MODE_MATCH_3D_FLAGS))
+ return meson_mode;
+ }
+
+ return NULL;
+}
+
/* Connector */
static void meson_cvbs_connector_destroy(struct drm_connector *connector)
@@ -136,14 +155,8 @@ static int meson_venc_cvbs_encoder_atomi
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
- int i;
-
- for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) {
- struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
-
- if (drm_mode_equal(&crtc_state->mode, &meson_mode->mode))
- return 0;
- }
+ if (meson_cvbs_get_mode(&crtc_state->mode))
+ return 0;
return -EINVAL;
}
@@ -191,24 +204,17 @@ static void meson_venc_cvbs_encoder_mode
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
+ const struct meson_cvbs_mode *meson_mode = meson_cvbs_get_mode(mode);
struct meson_venc_cvbs *meson_venc_cvbs =
encoder_to_meson_venc_cvbs(encoder);
struct meson_drm *priv = meson_venc_cvbs->priv;
- int i;
- for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) {
- struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
+ if (meson_mode) {
+ meson_venci_cvbs_mode_set(priv, meson_mode->enci);
- if (drm_mode_equal(mode, &meson_mode->mode)) {
- meson_venci_cvbs_mode_set(priv,
- meson_mode->enci);
-
- /* Setup 27MHz vclk2 for ENCI and VDAC */
- meson_vclk_setup(priv, MESON_VCLK_TARGET_CVBS,
- MESON_VCLK_CVBS, MESON_VCLK_CVBS,
- MESON_VCLK_CVBS, true);
- break;
- }
+ /* Setup 27MHz vclk2 for ENCI and VDAC */
+ meson_vclk_setup(priv, MESON_VCLK_TARGET_CVBS, MESON_VCLK_CVBS,
+ MESON_VCLK_CVBS, MESON_VCLK_CVBS, true);
}
}
