update the LCDC_HEOCFG30 and LCDC_HEOCFG31 registers of XLCDC IP which
supports vertical and horizontal scaling with Bilinear and Bicubic
co-efficients taps for Chroma and Luma componenets of the Pixel.
Signed-off-by: Manikandan Muralidharan <[email protected]>
---
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 2 ++
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 4 ++++
.../gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 20 +++++++++++++++++++
3 files changed, 26 insertions(+)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index d30aec174aa2..ae3e1a813482 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -536,6 +536,8 @@ static const struct atmel_hlcdc_layer_desc atmel_xlcdc_sam9x75_layers[] = {
.general_config = 12,
.csc = 16,
.scaler_config = 23,
+ .vxs_config = 30,
+ .hxs_config = 31,
},
.clut_offset = 0x1300,
},
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
index 8b05a54b5fd0..27074a4c5aec 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
@@ -198,6 +198,8 @@
* @disc_pos: discard area position register
* @disc_size: discard area size register
* @csc: color space conversion register
+ * @vxs_config: vertical scalar filter taps control register
+ * @hxs_config: horizontal scalar filter taps control register
*/
struct atmel_hlcdc_layer_cfg_layout {
int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
@@ -217,6 +219,8 @@ struct atmel_hlcdc_layer_cfg_layout {
int disc_pos;
int disc_size;
int csc;
+ int vxs_config;
+ int hxs_config;
};
/**
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
index 81f103b1a51f..b68075259053 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -978,6 +978,26 @@ static void xlcdc_csc_init(struct atmel_hlcdc_plane *plane,
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.csc + 6,
0x00000007);
+
+ if (desc->layout.vxs_config && desc->layout.hxs_config) {
+ /*
+ * Updating vxs.config and hxs.config fixes the
+ * Green Color Issue in SAM9X7 EGT Video Player App
+ */
+ atmel_hlcdc_layer_write_cfg(&plane->layer,
+ desc->layout.vxs_config,
+ ATMEL_XLCDC_LAYER_VXSYCFG_ONE |
+ ATMEL_XLCDC_LAYER_VXSYTAP2_ENABLE |
+ ATMEL_XLCDC_LAYER_VXSCCFG_ONE |
+ ATMEL_XLCDC_LAYER_VXSCTAP2_ENABLE);
+
+ atmel_hlcdc_layer_write_cfg(&plane->layer,
+ desc->layout.hxs_config,
+ ATMEL_XLCDC_LAYER_HXSYCFG_ONE |
+ ATMEL_XLCDC_LAYER_HXSYTAP2_ENABLE |
+ ATMEL_XLCDC_LAYER_HXSCCFG_ONE |
+ ATMEL_XLCDC_LAYER_HXSCTAP2_ENABLE);
+ }
}
static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane)
--
2.25.1