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drm/amd/display: Linux Set/Read link rate and lane count through debugfs

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expose dc function to be called by linux dm

Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hersen Wu 2018-06-15 09:28:34 -04:00 committed by Alex Deucher
parent 1811a51f6a
commit 40dd6bd376
2 changed files with 82 additions and 0 deletions
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65
drivers/gpu/drm/amd/display/dc/core/dc.c
View File

@ -384,6 +384,71 @@ void dc_stream_set_static_screen_events(struct dc *dc,
dc->hwss.set_static_screen_control(pipes_affected, num_pipes_affected, events);
}
void dc_link_set_drive_settings(struct dc *dc,
struct link_training_settings *lt_settings,
const struct dc_link *link)
{
int i;
for (i = 0; i < dc->link_count; i++) {
if (dc->links[i] == link)
break;
}
if (i >= dc->link_count)
ASSERT_CRITICAL(false);
dc_link_dp_set_drive_settings(dc->links[i], lt_settings);
}
void dc_link_perform_link_training(struct dc *dc,
struct dc_link_settings *link_setting,
bool skip_video_pattern)
{
int i;
for (i = 0; i < dc->link_count; i++)
dc_link_dp_perform_link_training(
dc->links[i],
link_setting,
skip_video_pattern);
}
void dc_link_set_preferred_link_settings(struct dc *dc,
struct dc_link_settings *link_setting,
struct dc_link *link)
{
link->preferred_link_setting = *link_setting;
dp_retrain_link_dp_test(link, link_setting, false);
}
void dc_link_enable_hpd(const struct dc_link *link)
{
dc_link_dp_enable_hpd(link);
}
void dc_link_disable_hpd(const struct dc_link *link)
{
dc_link_dp_disable_hpd(link);
}
void dc_link_set_test_pattern(struct dc_link *link,
enum dp_test_pattern test_pattern,
const struct link_training_settings *p_link_settings,
const unsigned char *p_custom_pattern,
unsigned int cust_pattern_size)
{
if (link != NULL)
dc_link_dp_set_test_pattern(
link,
test_pattern,
p_link_settings,
p_custom_pattern,
cust_pattern_size);
}
static void destruct(struct dc *dc)
{
dc_release_state(dc->current_state);

17
drivers/gpu/drm/amd/display/dc/dc_link.h
View File

@ -214,6 +214,23 @@ void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);
* DPCD access interfaces
*/
void dc_link_set_drive_settings(struct dc *dc,
struct link_training_settings *lt_settings,
const struct dc_link *link);
void dc_link_perform_link_training(struct dc *dc,
struct dc_link_settings *link_setting,
bool skip_video_pattern);
void dc_link_set_preferred_link_settings(struct dc *dc,
struct dc_link_settings *link_setting,
struct dc_link *link);
void dc_link_enable_hpd(const struct dc_link *link);
void dc_link_disable_hpd(const struct dc_link *link);
void dc_link_set_test_pattern(struct dc_link *link,
enum dp_test_pattern test_pattern,
const struct link_training_settings *p_link_settings,
const unsigned char *p_custom_pattern,
unsigned int cust_pattern_size);
bool dc_submit_i2c(
struct dc *dc,
uint32_t link_index,