iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/amd/display: Fix programming of gamma end points

Browse Source 
Signed-off-by: Anthony Koo <anthony.koo@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Anthony Koo 2016-12-16 12:12:03 -05:00 committed by Alex Deucher
parent 4a69244eb6
commit 538735e9e5
1 changed files with 27 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/gpu/drm/amd/display/dc/calcs/gamma_calcs.c
View File

@ -245,6 +245,8 @@ static bool build_hw_curve_configuration(
uint32_t segments = 0;
uint32_t max_number;
int8_t num_regions = 0;
bool result = false;
if (!number_of_points) {
@ -273,6 +275,7 @@ static bool build_hw_curve_configuration(
ASSERT(curve_config->segments[i] >= 0);
segments += (1 << curve_config->segments[i]);
++num_regions;
++i;
}
@ -284,12 +287,14 @@ static bool build_hw_curve_configuration(
uint32_t offset = 0;
int8_t begin = curve_config->begin;
int32_t region_number = 0;
struct fixed31_32 magic_number =
dal_fixed31_32_from_fraction(249, 1000);
i = begin;
while ((index < max_number) &&
(region_number < max_regions_number) &&
(i <= 1)) {
(i < (begin + num_regions))) {
int32_t j = 0;
segments = curve_config->segments[region_number];
@ -345,8 +350,7 @@ static bool build_hw_curve_configuration(
divisor);
points[index].x = region1;
round_custom_float_6_12(points + index);
points[index].adjusted_x = region1;
++index;
++region_number;
@ -366,9 +370,10 @@ static bool build_hw_curve_configuration(
++i;
}
points[index].x = region1;
round_custom_float_6_12(points + index);
points[index].x =
dal_fixed31_32_add(region1, magic_number);
points[index].adjusted_x =
dal_fixed31_32_add(region1, magic_number);
*number_of_points = index;
@ -1215,15 +1220,11 @@ static void rebuild_curve_configuration_magic(
const struct hw_x_point *coordinates_x,
uint32_t hw_points_num)
{
const struct fixed31_32 magic_number =
dal_fixed31_32_from_fraction(249, 1000);
struct fixed31_32 y_r;
struct fixed31_32 y_g;
struct fixed31_32 y_b;
struct fixed31_32 y1_min;
struct fixed31_32 y2_max;
struct fixed31_32 y3_max;
y_r = rgb_resulted[0].red;
@ -1238,29 +1239,31 @@ static void rebuild_curve_configuration_magic(
arr_points[0].y,
arr_points[0].x);
arr_points[1].x = dal_fixed31_32_add(
coordinates_x[hw_points_num - 1].adjusted_x,
magic_number);
arr_points[2].x = arr_points[1].x;
y_r = rgb_resulted[hw_points_num - 1].red;
y_g = rgb_resulted[hw_points_num - 1].green;
y_b = rgb_resulted[hw_points_num - 1].blue;
y2_max = dal_fixed31_32_max(y_r, dal_fixed31_32_max(y_g, y_b));
arr_points[1].y = y2_max;
/* this should be cleaned up as it's confusing my understanding (KK) is
* that REGAMMA_CNTLA_EXP_REGION_END is the X value for the region end
* REGAMMA_CNTLA_EXP_REGION_END_BASE is Y value for the above X
* REGAMMA_CNTLA_EXP_REGION_END_SLOPE is the slope beyond (X,Y) above
* currently when programming REGION_END = m_arrPoints[1].x,
* REGION_END_BASE = m_arrPoints[1].y, REGION_END_SLOPE=1
* we don't use m_arrPoints[2] at all after this function,
* and its purpose isn't clear to me
*/
arr_points[1].x = coordinates_x[hw_points_num].adjusted_x;
arr_points[2].x = coordinates_x[hw_points_num].adjusted_x;
y_r = rgb_resulted[hw_points_num].red;
y_g = rgb_resulted[hw_points_num].green;
y_b = rgb_resulted[hw_points_num].blue;
/* see comment above, m_arrPoints[1].y should be the Y value for the
* region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
*/
y3_max = dal_fixed31_32_max(y_r, dal_fixed31_32_max(y_g, y_b));
arr_points[1].y = y3_max;
arr_points[2].y = y3_max;
arr_points[2].slope = dal_fixed31_32_one;
arr_points[2].slope = dal_fixed31_32_zero;
}
static bool convert_to_custom_float_format(