[PATCH 06/14] drm/amd/display: remove TF check for LLS policy

[Aurabindo Pillai]

From: Samson Tam <samson....@amd.com>

[Why & How]
LLS policy not affected by TF.
Remove check in don't care case and use
 pixel format only.

Reviewed-by: Navid Assadian <navid.assad...@amd.com>
Signed-off-by: Samson Tam <samson....@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pil...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c | 31 +++++---------------
 1 file changed, 7 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c 
b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c
index 38a9a0d68058..31495c9978b0 100644
--- a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c
+++ b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c
@@ -767,25 +767,13 @@ static enum scl_mode spl_get_dscl_mode(const struct 
spl_in *spl_in,
        return SCL_MODE_SCALING_420_YCBCR_ENABLE;
 }
 
-static bool spl_choose_lls_policy(enum spl_pixel_format format,
-       enum spl_transfer_func_type tf_type,
-       enum spl_transfer_func_predefined tf_predefined_type,
+static void spl_choose_lls_policy(enum spl_pixel_format format,
        enum linear_light_scaling *lls_pref)
 {
-       if (spl_is_video_format(format)) {
+       if (spl_is_subsampled_format(format))
                *lls_pref = LLS_PREF_NO;
-               if ((tf_type == SPL_TF_TYPE_PREDEFINED) ||
-                       (tf_type == SPL_TF_TYPE_DISTRIBUTED_POINTS))
-                       return true;
-       } else { /* RGB or YUV444 */
-               if ((tf_type == SPL_TF_TYPE_PREDEFINED) ||
-                       (tf_type == SPL_TF_TYPE_BYPASS)) {
-                       *lls_pref = LLS_PREF_YES;
-                       return true;
-               }
-       }
-       *lls_pref = LLS_PREF_NO;
-       return false;
+       else /* RGB or YUV444 */
+               *lls_pref = LLS_PREF_YES;
 }
 
 /* Enable EASF ?*/
@@ -794,7 +782,6 @@ static bool enable_easf(struct spl_in *spl_in, struct 
spl_scratch *spl_scratch)
        int vratio = 0;
        int hratio = 0;
        bool skip_easf = false;
-       bool lls_enable_easf = true;
 
        if (spl_in->disable_easf)
                skip_easf = true;
@@ -810,17 +797,13 @@ static bool enable_easf(struct spl_in *spl_in, struct 
spl_scratch *spl_scratch)
                skip_easf = true;
 
        /*
-        * If lls_pref is LLS_PREF_DONT_CARE, then use pixel format and transfer
-        *  function to determine whether to use LINEAR or NONLINEAR scaling
+        * If lls_pref is LLS_PREF_DONT_CARE, then use pixel format
+        *  to determine whether to use LINEAR or NONLINEAR scaling
         */
        if (spl_in->lls_pref == LLS_PREF_DONT_CARE)
-               lls_enable_easf = spl_choose_lls_policy(spl_in->basic_in.format,
-                       spl_in->basic_in.tf_type, 
spl_in->basic_in.tf_predefined_type,
+               spl_choose_lls_policy(spl_in->basic_in.format,
                        &spl_in->lls_pref);
 
-       if (!lls_enable_easf)
-               skip_easf = true;
-
        /* Check for linear scaling or EASF preferred */
        if (spl_in->lls_pref != LLS_PREF_YES && !spl_in->prefer_easf)
                skip_easf = true;
-- 
2.48.1