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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2025-03-14 17:01:34 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-06 11:04:23 +0200 |
| commit | 0b48de06f58488c935a538a70d5c77317381124c (patch) | |
| tree | f1bcd9f7db8acb4c96569e8985292271d831189c | |
| parent | b4b6cfb2fb6c3c958d126682ad5a31f13bd682c5 (diff) | |
| download | linux-0b48de06f58488c935a538a70d5c77317381124c.tar.gz linux-0b48de06f58488c935a538a70d5c77317381124c.tar.bz2 linux-0b48de06f58488c935a538a70d5c77317381124c.zip | |
drm/i915/dsi: Fix off by one in BXT_MIPI_TRANS_VTOTAL
commit c464ce6af332e7c802c36cd337cacf81db05400c upstream.
BXT_MIPI_TRANS_VTOTAL must be programmed with vtotal-1
instead of vtotal. Make it so.
Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250314150136.22564-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 7b3685c9b38c3097f465efec8b24dbed63258cf6)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/i915/display/vlv_dsi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c index af717df83197..661de51dfd22 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c @@ -1060,7 +1060,7 @@ static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder, BXT_MIPI_TRANS_VACTIVE(port)); adjusted_mode->crtc_vtotal = intel_de_read(display, - BXT_MIPI_TRANS_VTOTAL(port)); + BXT_MIPI_TRANS_VTOTAL(port)) + 1; hactive = adjusted_mode->crtc_hdisplay; hfp = intel_de_read(display, MIPI_HFP_COUNT(display, port)); @@ -1265,7 +1265,7 @@ static void set_dsi_timings(struct intel_encoder *encoder, intel_de_write(display, BXT_MIPI_TRANS_VACTIVE(port), adjusted_mode->crtc_vdisplay); intel_de_write(display, BXT_MIPI_TRANS_VTOTAL(port), - adjusted_mode->crtc_vtotal); + adjusted_mode->crtc_vtotal - 1); } intel_de_write(display, MIPI_HACTIVE_AREA_COUNT(display, port), |