drm/amd/display: Proper de-allocation of OPP

- refactor opp_destroy functions to dce common file
  - fixes memory leak, dce specific variations didn't free regamma_params
- remove unused dce110_regamma structure
Signed-off-by: Joshua Aberback <Joshua.Aberback@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce/dce_opp.c

@@ -986,10 +986,12 @@ bool dce110_opp_construct(struct dce110_opp *opp110,
 
 void dce110_opp_destroy(struct output_pixel_processor **opp)
 {
+	if (*opp) {
+		if ((*opp)->regamma_params)
 			dm_free((*opp)->regamma_params);
 		(*opp)->regamma_params = NULL;
-
 		dm_free(FROM_DCE11_OPP(*opp));
+	}
 	*opp = NULL;
 }
 

drivers/gpu/drm/amd/display/dc/dce/dce_opp.h

@@ -312,40 +312,6 @@ struct dce_opp_registers {
 	uint32_t FMT_CLAMP_COMPONENT_B;
 };
 
-struct dce110_regamma {
-	struct gamma_curve arr_curve_points[16];
-	struct curve_points arr_points[3];
-	uint32_t hw_points_num;
-	struct hw_x_point *coordinates_x;
-	struct pwl_result_data *rgb_resulted;
-
-	/* re-gamma curve */
-	struct pwl_float_data_ex *rgb_regamma;
-	/* coeff used to map user evenly distributed points
-	 * to our hardware points (predefined) for gamma 256 */
-	struct pixel_gamma_point *coeff128;
-	struct pixel_gamma_point *coeff128_oem;
-	/* coeff used to map user evenly distributed points
-	 * to our hardware points (predefined) for gamma 1025 */
-	struct pixel_gamma_point *coeff128_dx;
-	/* evenly distributed points, gamma 256 software points 0-255 */
-	struct gamma_pixel *axis_x_256;
-	/* evenly distributed points, gamma 1025 software points 0-1025 */
-	struct gamma_pixel *axis_x_1025;
-	/* OEM supplied gamma for regamma LUT */
-	struct pwl_float_data *rgb_oem;
-	/* user supplied gamma */
-	struct pwl_float_data *rgb_user;
-	uint32_t extra_points;
-	bool use_half_points;
-	struct fixed31_32 x_max1;
-	struct fixed31_32 x_max2;
-	struct fixed31_32 x_min;
-	struct fixed31_32 divider1;
-	struct fixed31_32 divider2;
-	struct fixed31_32 divider3;
-};
-
 /* OPP RELATED */
 #define TO_DCE110_OPP(opp)\
 	container_of(opp, struct dce110_opp, base)
@@ -355,7 +321,6 @@ struct dce110_opp {
 	const struct dce_opp_registers *regs;
 	const struct dce_opp_shift *opp_shift;
 	const struct dce_opp_mask *opp_mask;
-	struct dce110_regamma regamma;
 };
 
 bool dce110_opp_construct(struct dce110_opp *opp110,

drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c

@@ -633,30 +633,6 @@ struct output_pixel_processor *dce100_opp_create(
 	return NULL;
 }
 
-void dce100_opp_destroy(struct output_pixel_processor **opp)
-{
-	struct dce110_opp *dce110_opp;
-
-	if (!opp || !*opp)
-		return;
-
-	dce110_opp = FROM_DCE11_OPP(*opp);
-
-	dm_free(dce110_opp->regamma.coeff128_dx);
-	dm_free(dce110_opp->regamma.coeff128_oem);
-	dm_free(dce110_opp->regamma.coeff128);
-	dm_free(dce110_opp->regamma.axis_x_1025);
-	dm_free(dce110_opp->regamma.axis_x_256);
-	dm_free(dce110_opp->regamma.coordinates_x);
-	dm_free(dce110_opp->regamma.rgb_regamma);
-	dm_free(dce110_opp->regamma.rgb_resulted);
-	dm_free(dce110_opp->regamma.rgb_oem);
-	dm_free(dce110_opp->regamma.rgb_user);
-	dm_free(dce110_opp);
-
-	*opp = NULL;
-}
-
 struct clock_source *dce100_clock_source_create(
 	struct dc_context *ctx,
 	struct dc_bios *bios,
@@ -692,7 +668,7 @@ static void destruct(struct dce110_resource_pool *pool)
 
 	for (i = 0; i < pool->base.pipe_count; i++) {
 		if (pool->base.opps[i] != NULL)
-			dce100_opp_destroy(&pool->base.opps[i]);
+			dce110_opp_destroy(&pool->base.opps[i]);
 
 		if (pool->base.transforms[i] != NULL)
 			dce100_transform_destroy(&pool->base.transforms[i]);

drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c

@@ -645,30 +645,6 @@ struct output_pixel_processor *dce112_opp_create(
 	return NULL;
 }
 
-void dce112_opp_destroy(struct output_pixel_processor **opp)
-{
-	struct dce110_opp *dce110_opp;
-
-	if (!opp || !*opp)
-		return;
-
-	dce110_opp = FROM_DCE11_OPP(*opp);
-
-	dm_free(dce110_opp->regamma.coeff128_dx);
-	dm_free(dce110_opp->regamma.coeff128_oem);
-	dm_free(dce110_opp->regamma.coeff128);
-	dm_free(dce110_opp->regamma.axis_x_1025);
-	dm_free(dce110_opp->regamma.axis_x_256);
-	dm_free(dce110_opp->regamma.coordinates_x);
-	dm_free(dce110_opp->regamma.rgb_regamma);
-	dm_free(dce110_opp->regamma.rgb_resulted);
-	dm_free(dce110_opp->regamma.rgb_oem);
-	dm_free(dce110_opp->regamma.rgb_user);
-
-	dm_free(dce110_opp);
-	*opp = NULL;
-}
-
 struct clock_source *dce112_clock_source_create(
 	struct dc_context *ctx,
 	struct dc_bios *bios,
@@ -704,7 +680,7 @@ static void destruct(struct dce110_resource_pool *pool)
 
 	for (i = 0; i < pool->base.pipe_count; i++) {
 		if (pool->base.opps[i] != NULL)
-			dce112_opp_destroy(&pool->base.opps[i]);
+			dce110_opp_destroy(&pool->base.opps[i]);
 
 		if (pool->base.transforms[i] != NULL)
 			dce112_transform_destroy(&pool->base.transforms[i]);