Calculate the correct timings for displayport, from downstream driver.
Signed-off-by: Jonathan Marek jonathan@marek.ca --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c index 64f556d693dd..6f0f54588124 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c @@ -107,11 +107,6 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, display_v_end = ((vsync_period - p->v_front_porch) * hsync_period) + p->hsync_skew - 1;
- if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) { - display_v_start += p->hsync_pulse_width + p->h_back_porch; - display_v_end -= p->h_front_porch; - } - hsync_start_x = p->h_back_porch + p->hsync_pulse_width; hsync_end_x = hsync_period - p->h_front_porch - 1;
@@ -144,10 +139,25 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, hsync_ctl = (hsync_period << 16) | p->hsync_pulse_width; display_hctl = (hsync_end_x << 16) | hsync_start_x;
+ if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) { + active_h_start = hsync_start_x; + active_h_end = active_h_start + p->xres - 1; + active_v_start = display_v_start; + active_v_end = active_v_start + (p->yres * hsync_period) - 1; + + display_v_start += p->hsync_pulse_width + p->h_back_porch; + + active_hctl = (active_h_end << 16) | active_h_start; + display_hctl = active_hctl; + } + den_polarity = 0; if (ctx->cap->type == INTF_HDMI) { hsync_polarity = p->yres >= 720 ? 0 : 1; vsync_polarity = p->yres >= 720 ? 0 : 1; + } else if (ctx->cap->type == INTF_DP) { + hsync_polarity = p->hsync_polarity; + vsync_polarity = p->vsync_polarity; } else { hsync_polarity = 0; vsync_polarity = 0;