[PATCH 11/17] drm/sun4i: Wire in DE2 scaler support

Jernej Skrabec
2017-11-27T20:57:44Z

Calculate scaling parameters and call appropriate scaler set up
function.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
drivers/gpu/drm/sun4i/sun8i_layer.c | 12 +++-
drivers/gpu/drm/sun4i/sun8i_mixer.c | 115 +++++++++++++++++++++++++-----------
drivers/gpu/drm/sun4i/sun8i_mixer.h | 4 --
3 files changed, 90 insertions(+), 41 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_layer.c b/drivers/gpu/drm/sun4i/sun8i_layer.c
index e1b6ad82145e..6860271e5415 100644
--- a/drivers/gpu/drm/sun4i/sun8i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_layer.c
@@ -25,8 +25,11 @@
static int sun8i_mixer_layer_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
+ struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
struct drm_crtc *crtc = state->crtc;
struct drm_crtc_state *crtc_state;
+ int min_scale, max_scale;
+ bool scaler_supported;
struct drm_rect clip;

if (!crtc)
@@ -41,9 +44,14 @@ static int sun8i_mixer_layer_atomic_check(struct drm_plane *plane,
clip.x2 = crtc_state->adjusted_mode.hdisplay;
clip.y2 = crtc_state->adjusted_mode.vdisplay;

+ scaler_supported = !!(layer->mixer->cfg->scaler_mask & BIT(layer->id));
+
+ min_scale = scaler_supported ? 1 : DRM_PLANE_HELPER_NO_SCALING;
+ max_scale = scaler_supported ? (1UL << 20) - 1 :
+ DRM_PLANE_HELPER_NO_SCALING;
+
return drm_plane_helper_check_state(state, &clip,
- DRM_PLANE_HELPER_NO_SCALING,
- DRM_PLANE_HELPER_NO_SCALING,
+ min_scale, max_scale,
true, true);
}

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 291dd8806444..7c9c87a0535b 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -28,6 +28,7 @@
#include "sun8i_mixer.h"
#include "sun8i_layer.h"
#include "sunxi_engine.h"
+#include "sun8i_scaler.h"

struct de2_fmt_info {
u32 drm_fmt;
@@ -194,29 +195,34 @@ int sun8i_mixer_update_ui_layer_coord(struct sun8i_mixer *mixer,
int layer, struct drm_plane *plane)
{
struct drm_plane_state *state = plane->state;
- u32 width, height, size;
+ u32 src_w, src_h, dst_w, dst_h;
+ u32 outsize, insize;
+ u32 hphase, vphase;

- DRM_DEBUG_DRIVER("Updating layer %d\n", layer);
+ DRM_DEBUG_DRIVER("Updating UI layer %d\n", layer);

- /*
- * Same source and destination width and height are guaranteed
- * by atomic check function.
- */
- width = drm_rect_width(&state->dst);
- height = drm_rect_height(&state->dst);
- size = SUN8I_MIXER_SIZE(width, height);
+ src_w = drm_rect_width(&state->src) >> 16;
+ src_h = drm_rect_height(&state->src) >> 16;
+ dst_w = drm_rect_width(&state->dst);
+ dst_h = drm_rect_height(&state->dst);
+
+ hphase = state->src.x1 & 0xffff;
+ vphase = state->src.y1 & 0xffff;
+
+ insize = SUN8I_MIXER_SIZE(src_w, src_h);
+ outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);

if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
bool interlaced = false;
u32 val;

DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n",
- width, height);
+ dst_w, dst_h);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_GLOBAL_SIZE,
- size);
+ outsize);
regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_OUTSIZE,
- size);
+ outsize);

if (state->crtc)
interlaced = state->crtc->state->adjusted_mode.flags
@@ -237,23 +243,40 @@ int sun8i_mixer_update_ui_layer_coord(struct sun8i_mixer *mixer,
}

/* Set height and width */
- DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n", width, height);
+ DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
+ state->src.x1 >> 16, state->src.y1 >> 16);
+ DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_UI_LAYER_SIZE(layer, 0),
- size);
+ SUN8I_MIXER_CHAN_UI_LAYER_SIZE(layer, 0), insize);
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_UI_OVL_SIZE(layer),
- size);
+ SUN8I_MIXER_CHAN_UI_OVL_SIZE(layer), insize);
+
+ if (insize != outsize || hphase || vphase) {
+ u32 hscale, vscale;
+
+ DRM_DEBUG_DRIVER("HW scaling is enabled\n");
+
+ hscale = state->src_w / state->crtc_w;
+ vscale = state->src_h / state->crtc_h;
+
+ sun8i_scaler_gsu_setup(mixer, layer, src_w, src_h, dst_w, dst_h,
+ hscale, vscale, hphase, vphase);
+ sun8i_scaler_gsu_enable(mixer, layer, true);
+ } else {
+ DRM_DEBUG_DRIVER("HW scaling is not needed\n");
+ sun8i_scaler_gsu_enable(mixer, layer, false);
+ }

/* Set base coordinates */
- DRM_DEBUG_DRIVER("Layer coordinates X: %d Y: %d\n",
+ DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
state->dst.x1, state->dst.y1);
+ DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_COORD(layer),
SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_INSIZE(layer),
- size);
+ outsize);

return 0;
}
@@ -262,36 +285,58 @@ int sun8i_mixer_update_vi_layer_coord(struct sun8i_mixer *mixer,
int layer, struct drm_plane *plane)
{
struct drm_plane_state *state = plane->state;
- u32 width, height, size;
+ u32 src_w, src_h, dst_w, dst_h;
+ u32 outsize, insize;
+ u32 hphase, vphase;

- DRM_DEBUG_DRIVER("Updating layer %d\n", layer);
+ DRM_DEBUG_DRIVER("Updating VI layer %d\n", layer);

- /*
- * Same source and destination width and height are guaranteed
- * by atomic check function.
- */
- width = drm_rect_width(&state->dst);
- height = drm_rect_height(&state->dst);
- size = SUN8I_MIXER_SIZE(width, height);
+ src_w = drm_rect_width(&state->src) >> 16;
+ src_h = drm_rect_height(&state->src) >> 16;
+ dst_w = drm_rect_width(&state->dst);
+ dst_h = drm_rect_height(&state->dst);
+
+ hphase = state->src.x1 & 0xffff;
+ vphase = state->src.y1 & 0xffff;
+
+ insize = SUN8I_MIXER_SIZE(src_w, src_h);
+ outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);

/* Set height and width */
- DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n", width, height);
+ DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
+ state->src.x1 >> 16, state->src.y1 >> 16);
+ DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_SIZE(layer, 0),
- size);
+ SUN8I_MIXER_CHAN_VI_LAYER_SIZE(layer, 0), insize);
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_OVL_SIZE(layer),
- size);
+ SUN8I_MIXER_CHAN_VI_OVL_SIZE(layer), insize);
+
+ if (insize != outsize || hphase || vphase) {
+ u32 hscale, vscale;
+
+ DRM_DEBUG_DRIVER("HW scaling is enabled\n");
+
+ hscale = state->src_w / state->crtc_w;
+ vscale = state->src_h / state->crtc_h;
+
+ sun8i_scaler_vsu_setup(mixer, layer, src_w, src_h, dst_w, dst_h,
+ hscale, vscale, hphase, vphase);
+ sun8i_scaler_vsu_enable(mixer, layer, true);
+ } else {
+ DRM_DEBUG_DRIVER("HW scaling is not needed\n");
+ sun8i_scaler_vsu_enable(mixer, layer, false);
+ }

/* Set base coordinates */
- DRM_DEBUG_DRIVER("Layer coordinates X: %d Y: %d\n",
+ DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
state->dst.x1, state->dst.y1);
+ DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_COORD(layer),
SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_INSIZE(layer),
- size);
+ outsize);

return 0;
}
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/sun8i_mixer.h
index ad5aef5846ae..355a45e6cfb4 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -124,10 +124,6 @@
* These sub-engines are still unknown now, the EN registers are here only to
* be used to disable these sub-engines.
*/
-#define SUN8I_MIXER_VSU_EN 0x20000
-#define SUN8I_MIXER_GSU1_EN 0x30000
-#define SUN8I_MIXER_GSU2_EN 0x40000
-#define SUN8I_MIXER_GSU3_EN 0x50000
#define SUN8I_MIXER_FCE_EN 0xa0000
#define SUN8I_MIXER_BWS_EN 0xa2000
#define SUN8I_MIXER_LTI_EN 0xa4000
--
2.15.0