[PATCH 21/23] drm: sun4i: de33: vi_scaler: add Display Engine 3.3 (DE33) support

[Ryan Walklin]

From: Jernej Skrabec <jernej.skra...@gmail.com>

The vi_scaler appears to be used in preference to the ui_scaler module
for hardware video scaling in the DE33.

Enable support for this scaler.

Signed-off-by: Jernej Skrabec <jernej.skra...@gmail.com>
Signed-off-by: Ryan Walklin <r...@testtoast.com>
---
 drivers/gpu/drm/sun4i/sun8i_ui_layer.c  | 19 +++++++++++++++----
 drivers/gpu/drm/sun4i/sun8i_vi_scaler.c |  7 ++++++-
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c 
b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
index 7f4d4dcfdc03d..1649816fe435e 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
@@ -146,12 +146,23 @@ static int sun8i_ui_layer_update_coord(struct sun8i_mixer 
*mixer, int channel,
                hscale = state->src_w / state->crtc_w;
                vscale = state->src_h / state->crtc_h;
 
-               sun8i_ui_scaler_setup(mixer, channel, src_w, src_h, dst_w,
-                                     dst_h, hscale, vscale, hphase, vphase);
-               sun8i_ui_scaler_enable(mixer, channel, true);
+               if (mixer->cfg->de_type == sun8i_mixer_de33) {
+                       sun8i_vi_scaler_setup(mixer, channel, src_w, src_h,
+                                             dst_w, dst_h, hscale, vscale,
+                                             hphase, vphase,
+                                             state->fb->format);
+               } else {
+                       sun8i_ui_scaler_setup(mixer, channel, src_w, src_h,
+                                             dst_w, dst_h, hscale, vscale,
+                                             hphase, vphase);
+                       sun8i_ui_scaler_enable(mixer, channel, true);
+               }
        } else {
                DRM_DEBUG_DRIVER("HW scaling is not needed\n");
-               sun8i_ui_scaler_enable(mixer, channel, false);
+               if (mixer->cfg->de_type == sun8i_mixer_de33)
+                       sun8i_vi_scaler_disable(mixer, channel);
+               else
+                       sun8i_ui_scaler_enable(mixer, channel, false);
        }
 
        /* Set base coordinates */
diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c 
b/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c
index e7242301b312c..9c7f6e7d71d50 100644
--- a/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c
@@ -835,7 +835,9 @@ static const u32 bicubic4coefftab32[480] = {
 
 static u32 sun8i_vi_scaler_base(struct sun8i_mixer *mixer, int channel)
 {
-       if (mixer->cfg->de_type == sun8i_mixer_de3)
+       if (mixer->cfg->de_type == sun8i_mixer_de33)
+               return sun8i_channel_base(mixer, channel) + 0x3000;
+       else if (mixer->cfg->de_type == sun8i_mixer_de3)
                return DE3_VI_SCALER_UNIT_BASE +
                       DE3_VI_SCALER_UNIT_SIZE * channel;
        else
@@ -845,6 +847,9 @@ static u32 sun8i_vi_scaler_base(struct sun8i_mixer *mixer, 
int channel)
 
 static bool sun8i_vi_scaler_is_vi_plane(struct sun8i_mixer *mixer, int channel)
 {
+       if (mixer->cfg->de_type == sun8i_mixer_de33)
+               return mixer->cfg->map[channel] < mixer->cfg->vi_num;
+
        return true;
 }
 
-- 
2.45.2