6.15-stable review patch. If anyone has any objections, please let me know.
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From: Ville Syrjälä ville.syrjala@linux.intel.com
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.s... 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 --- drivers/gpu/drm/i915/display/vlv_dsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- 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(stru 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 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),