This avoids using two LMs instead of one when the display width is lower than the maximum supported value. For example on MSM8996/MSM8998, the actual maxwidth is 2560, so we would use two LMs for 1280x720 or 1920x1080 resolutions, while one is enough. Signed-off-by: Arnaud Vrac <avrac@xxxxxxxxxx> --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 1dc5dbe585723..dd2914726c4f6 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -53,8 +53,6 @@ #define IDLE_SHORT_TIMEOUT 1 -#define MAX_HDISPLAY_SPLIT 1080 - /* timeout in frames waiting for frame done */ #define DPU_ENCODER_FRAME_DONE_TIMEOUT_FRAMES 5 @@ -568,10 +566,12 @@ static struct msm_display_topology dpu_encoder_get_topology( */ if (intf_count == 2) topology.num_lm = 2; - else if (!dpu_kms->catalog->caps->has_3d_merge) - topology.num_lm = 1; + else if (dpu_kms->catalog->caps->has_3d_merge && + dpu_kms->catalog->mixer_count > 0 && + mode->hdisplay > dpu_kms->catalog->mixer[0].sblk->maxwidth) + topology.num_lm = 2; else - topology.num_lm = (mode->hdisplay > MAX_HDISPLAY_SPLIT) ? 2 : 1; + topology.num_lm = 1; if (crtc_state->ctm) topology.num_dspp = topology.num_lm; -- 2.40.0
