[PATCH v2 5/5] drm/i915: Enable scaling filter for plane and CRTC
Ville Syrjälä
ville.syrjala at linux.intel.com
Mon Mar 23 14:47:49 UTC 2020
On Thu, Mar 19, 2020 at 03:51:03PM +0530, Pankaj Bharadiya wrote:
> GEN >= 10 hardware supports the programmable scaler filter.
>
> Attach scaling filter property for CRTC and plane for GEN >= 10
> hardwares and program scaler filter based on the selected filter
> type.
>
> changes since v1:
> * None
> Changes since RFC:
> * Enable properties for GEN >= 10 platforms (Ville)
> * Do not round off the crtc co-ordinate (Danial Stone, Ville)
> * Add new functions to handle scaling filter setup (Ville)
> * Remove coefficient set 0 hardcoding.
>
> Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
> Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya at intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 32 ++++++++++++++++++--
> drivers/gpu/drm/i915/display/intel_sprite.c | 31 ++++++++++++++++++-
> 2 files changed, 60 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 791dd908aa89..4b3387ee332e 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -6309,6 +6309,25 @@ void skl_scaler_setup_nearest_neighbor_filter(struct drm_i915_private *dev_priv,
> }
> }
>
> +static u32
> +skl_scaler_crtc_setup_filter(struct drm_i915_private *dev_priv, enum pipe pipe,
> + int id, int set, enum drm_crtc_scaling_filter filter)
> +{
> + u32 scaler_filter_ctl = PS_FILTER_MEDIUM;
> +
> + if (filter == DRM_CRTC_SCALING_FILTER_NEAREST_NEIGHBOR) {
> + skl_scaler_setup_nearest_neighbor_filter(dev_priv, pipe, id,
> + set);
> + scaler_filter_ctl = PS_FILTER_PROGRAMMED |
> + PS_UV_VERT_FILTER_SELECT(set) |
> + PS_UV_HORZ_FILTER_SELECT(set) |
> + PS_Y_VERT_FILTER_SELECT(set) |
> + PS_Y_HORZ_FILTER_SELECT(set);
> +
> + }
> + return scaler_filter_ctl;
This function does too many things.
> +}
> +
> static void skl_pfit_enable(const struct intel_crtc_state *crtc_state)
> {
> struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> @@ -6316,12 +6335,14 @@ static void skl_pfit_enable(const struct intel_crtc_state *crtc_state)
> enum pipe pipe = crtc->pipe;
> const struct intel_crtc_scaler_state *scaler_state =
> &crtc_state->scaler_state;
> + const struct drm_crtc_state *state = &crtc_state->uapi;
Pls don't add this kind of aliases. We're moving away from using the
drm_ types as much as possible.
>
> if (crtc_state->pch_pfit.enabled) {
> u16 uv_rgb_hphase, uv_rgb_vphase;
> int pfit_w, pfit_h, hscale, vscale;
> unsigned long irqflags;
> int id;
> + int scaler_filter_ctl;
It's a register value so u32. I'd also
s/scaler_filter_ctl/filter_select/ or something like that.
Alternatively we could just call it ps_ctrl and have it contain
the full register value for that particular register.
>
> if (drm_WARN_ON(&dev_priv->drm,
> crtc_state->scaler_state.scaler_id < 0))
> @@ -6340,8 +6361,12 @@ static void skl_pfit_enable(const struct intel_crtc_state *crtc_state)
>
> spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
>
> - intel_de_write_fw(dev_priv, SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
> - PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
> + scaler_filter_ctl =
> + skl_scaler_crtc_setup_filter(dev_priv, pipe, id, 0,
> + state->scaling_filter);
> + intel_de_write_fw(dev_priv, SKL_PS_CTRL(pipe, id),
> + PS_SCALER_EN | scaler_filter_ctl |
> + scaler_state->scalers[id].mode);
> intel_de_write_fw(dev_priv, SKL_PS_VPHASE(pipe, id),
> PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_vphase));
> intel_de_write_fw(dev_priv, SKL_PS_HPHASE(pipe, id),
> @@ -16777,6 +16802,9 @@ static int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
> dev_priv->plane_to_crtc_mapping[i9xx_plane] = crtc;
> }
>
> + if (INTEL_GEN(dev_priv) >= 10)
> + drm_crtc_enable_scaling_filter(&crtc->base);
> +
> intel_color_init(crtc);
>
> intel_crtc_crc_init(crtc);
> diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
> index deda351719db..ac3fd9843ace 100644
> --- a/drivers/gpu/drm/i915/display/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/display/intel_sprite.c
> @@ -395,6 +395,26 @@ skl_plane_max_stride(struct intel_plane *plane,
> return min(8192 * cpp, 32768);
> }
>
> +static u32
> +skl_scaler_plane_setup_filter(struct drm_i915_private *dev_priv, enum pipe pipe,
> + int id, int set,
> + enum drm_plane_scaling_filter filter)
> +{
> + u32 scaler_filter_ctl = PS_FILTER_MEDIUM;
> +
> + if (filter == DRM_PLANE_SCALING_FILTER_NEAREST_NEIGHBOR) {
> + skl_scaler_setup_nearest_neighbor_filter(dev_priv, pipe, id,
> + set);
> + scaler_filter_ctl = PS_FILTER_PROGRAMMED |
> + PS_UV_VERT_FILTER_SELECT(set) |
> + PS_UV_HORZ_FILTER_SELECT(set) |
> + PS_Y_VERT_FILTER_SELECT(set) |
> + PS_Y_HORZ_FILTER_SELECT(set);
> +
> + }
> + return scaler_filter_ctl;
> +}
> +
We don't want such copy pasta between planes and crtcs.
> static void
> skl_program_scaler(struct intel_plane *plane,
> const struct intel_crtc_state *crtc_state,
> @@ -406,6 +426,7 @@ skl_program_scaler(struct intel_plane *plane,
> int scaler_id = plane_state->scaler_id;
> const struct intel_scaler *scaler =
> &crtc_state->scaler_state.scalers[scaler_id];
> + const struct drm_plane_state *state = &plane_state->uapi;
> int crtc_x = plane_state->uapi.dst.x1;
> int crtc_y = plane_state->uapi.dst.y1;
> u32 crtc_w = drm_rect_width(&plane_state->uapi.dst);
> @@ -413,6 +434,7 @@ skl_program_scaler(struct intel_plane *plane,
> u16 y_hphase, uv_rgb_hphase;
> u16 y_vphase, uv_rgb_vphase;
> int hscale, vscale;
> + int scaler_filter_ctl;
>
> hscale = drm_rect_calc_hscale(&plane_state->uapi.src,
> &plane_state->uapi.dst,
> @@ -439,8 +461,12 @@ skl_program_scaler(struct intel_plane *plane,
> uv_rgb_vphase = skl_scaler_calc_phase(1, vscale, false);
> }
>
> + scaler_filter_ctl =
> + skl_scaler_plane_setup_filter(dev_priv, pipe, scaler_id, 0,
> + state->scaling_filter);
> intel_de_write_fw(dev_priv, SKL_PS_CTRL(pipe, scaler_id),
> - PS_SCALER_EN | PS_PLANE_SEL(plane->id) | scaler->mode);
> + PS_SCALER_EN | PS_PLANE_SEL(plane->id) |
> + scaler->mode | scaler_filter_ctl);
> intel_de_write_fw(dev_priv, SKL_PS_VPHASE(pipe, scaler_id),
> PS_Y_PHASE(y_vphase) | PS_UV_RGB_PHASE(uv_rgb_vphase));
> intel_de_write_fw(dev_priv, SKL_PS_HPHASE(pipe, scaler_id),
> @@ -3121,6 +3147,9 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
>
> drm_plane_create_zpos_immutable_property(&plane->base, plane_id);
>
> + if (INTEL_GEN(dev_priv) >= 10)
> + drm_plane_enable_scaling_filter(&plane->base);
> +
> drm_plane_helper_add(&plane->base, &intel_plane_helper_funcs);
>
> return plane;
> --
> 2.23.0
--
Ville Syrjälä
Intel
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