From: Dmytro Laktyushkin <[email protected]>

This change will fix wb and display scaling when ratios of
4 or more are involved

Signed-off-by: Dmytro Laktyushkin <[email protected]>
Reviewed-by: Tony Cheng <[email protected]>
Acked-by: Harry Wentland <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c    | 5 +++++
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c      | 3 +--
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.h      | 6 +-----
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c | 8 ++++----
 drivers/gpu/drm/amd/display/include/fixed31_32.h      | 2 ++
 5 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c 
b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c
index e61dd97d0928..f28989860fd8 100644
--- a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c
+++ b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c
@@ -449,6 +449,11 @@ static inline unsigned int clamp_ux_dy(
                return min_clamp;
 }
 
+unsigned int dc_fixpt_u3d19(struct fixed31_32 arg)
+{
+       return ux_dy(arg.value, 3, 19);
+}
+
 unsigned int dc_fixpt_u2d19(struct fixed31_32 arg)
 {
        return ux_dy(arg.value, 2, 19);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c 
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
index 46a35c7f01df..c69fa4bfab0a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
@@ -132,8 +132,7 @@ void dpp_set_gamut_remap_bypass(struct dcn10_dpp *dpp)
 
 #define IDENTITY_RATIO(ratio) (dc_fixpt_u2d19(ratio) == (1 << 19))
 
-
-bool dpp_get_optimal_number_of_taps(
+static bool dpp_get_optimal_number_of_taps(
                struct dpp *dpp,
                struct scaler_data *scl_data,
                const struct scaling_taps *in_taps)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.h 
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.h
index 5944a3ba0409..e862cafa6501 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.h
@@ -1424,12 +1424,8 @@ void dpp1_set_degamma(
                enum ipp_degamma_mode mode);
 
 void dpp1_set_degamma_pwl(struct dpp *dpp_base,
-                                                                const struct 
pwl_params *params);
+               const struct pwl_params *params);
 
-bool dpp_get_optimal_number_of_taps(
-               struct dpp *dpp,
-               struct scaler_data *scl_data,
-               const struct scaling_taps *in_taps);
 
 void dpp_read_state(struct dpp *dpp_base,
                struct dcn_dpp_state *s);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c 
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c
index 4ddd6273d5a5..f862fd148cca 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c
@@ -565,16 +565,16 @@ static void dpp1_dscl_set_manual_ratio_init(
        uint32_t init_int = 0;
 
        REG_SET(SCL_HORZ_FILTER_SCALE_RATIO, 0,
-                       SCL_H_SCALE_RATIO, dc_fixpt_u2d19(data->ratios.horz) << 
5);
+                       SCL_H_SCALE_RATIO, dc_fixpt_u3d19(data->ratios.horz) << 
5);
 
        REG_SET(SCL_VERT_FILTER_SCALE_RATIO, 0,
-                       SCL_V_SCALE_RATIO, dc_fixpt_u2d19(data->ratios.vert) << 
5);
+                       SCL_V_SCALE_RATIO, dc_fixpt_u3d19(data->ratios.vert) << 
5);
 
        REG_SET(SCL_HORZ_FILTER_SCALE_RATIO_C, 0,
-                       SCL_H_SCALE_RATIO_C, 
dc_fixpt_u2d19(data->ratios.horz_c) << 5);
+                       SCL_H_SCALE_RATIO_C, 
dc_fixpt_u3d19(data->ratios.horz_c) << 5);
 
        REG_SET(SCL_VERT_FILTER_SCALE_RATIO_C, 0,
-                       SCL_V_SCALE_RATIO_C, 
dc_fixpt_u2d19(data->ratios.vert_c) << 5);
+                       SCL_V_SCALE_RATIO_C, 
dc_fixpt_u3d19(data->ratios.vert_c) << 5);
 
        /*
         * 0.24 format for fraction, first five bits zeroed
diff --git a/drivers/gpu/drm/amd/display/include/fixed31_32.h 
b/drivers/gpu/drm/amd/display/include/fixed31_32.h
index 2b1b29f6c794..52a73332befb 100644
--- a/drivers/gpu/drm/amd/display/include/fixed31_32.h
+++ b/drivers/gpu/drm/amd/display/include/fixed31_32.h
@@ -503,6 +503,8 @@ static inline int dc_fixpt_ceil(struct fixed31_32 arg)
  * fractional
  */
 
+unsigned int dc_fixpt_u3d19(struct fixed31_32 arg);
+
 unsigned int dc_fixpt_u2d19(struct fixed31_32 arg);
 
 unsigned int dc_fixpt_u0d19(struct fixed31_32 arg);
-- 
2.17.0

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