Quoting Kuogee Hsieh (2022-02-17 13:36:27)
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 0d315b4..0c22839 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -217,6 +219,14 @@ static u32 dither_matrix[DITHER_MATRIX_SZ] = {
> 15, 7, 13, 5, 3, 11, 1, 9, 12, 4, 14, 6, 0, 8, 2, 10
> };
>
> +
> +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc)
const?
> +{
> + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc);
const?
> +
> + return dpu_enc->wide_bus_en;
> +}
> +
> static void _dpu_encoder_setup_dither(struct dpu_hw_pingpong *hw_pp, unsigned bpc)
> {
> struct dpu_hw_dither_cfg dither_cfg = { 0 };
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> index 99a5d73..893d74d 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> @@ -168,4 +168,6 @@ int dpu_encoder_get_linecount(struct drm_encoder *drm_enc);
> */
> int dpu_encoder_get_frame_count(struct drm_encoder *drm_enc);
>
> +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc);
const drm_enc?
> +
> #endif /* __DPU_ENCODER_H__ */
> 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 c2cd185..4e4fa56 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> @@ -147,17 +156,36 @@ 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) {
> + /*
> + * DATA_HCTL_EN controls data timing which can be different from
> + * video timing. It is recommended to enable it for all cases, except
> + * if compression is enabled in 1 pixel per clock mode
> + */
> + if (p->wide_bus_en)
> + intf_cfg2 |= (INTF_CFG2_DATABUS_WIDEN | INTF_CFG2_DATA_HCTL_EN);
Drop useless parenthesis please.
> +
> + data_width = p->width;
> +
> + hsync_data_start_x = hsync_start_x;
> + hsync_data_end_x = hsync_start_x + data_width - 1;
> +
> + display_data_hctl = (hsync_data_end_x << 16) | hsync_data_start_x;
> +
> + if (dp_intf) {
> + /* DP timing adjustment */
> + display_v_start += p->hsync_pulse_width + p->h_back_porch;
> + display_v_end -= p->h_front_porch;
Is this code movement intentional?
> +
> active_h_start = hsync_start_x;
> active_h_end = active_h_start + p->xres - 1;
> active_v_start = display_v_start;
display_v_start is different now.
> active_v_end = active_v_start + (p->yres * hsync_period) - 1;
>
> - display_v_start += p->hsync_pulse_width + p->h_back_porch;
> - display_v_end -= p->h_front_porch;
> -
> active_hctl = (active_h_end << 16) | active_h_start;
> display_hctl = active_hctl;
> +
> + intf_cfg |= INTF_CFG_ACTIVE_H_EN;
> + intf_cfg |= INTF_CFG_ACTIVE_V_EN;
intf_cfg |= INTF_CFG_ACTIVE_H_EN | INTF_CFG_ACTIVE_V_EN;
would be one less line.
