VGA connectors don't have HPD (hotplug detection), so don't
touch any HPD related registers for VGA.
Signed-off-by: Timur Kristóf <timur.kris...@gmail.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index c7d13e743e6c..1bb8a9bc673b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -758,6 +758,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct
file *f, const char __us
int max_param_num = 11;
enum dp_test_pattern test_pattern = DP_TEST_PATTERN_UNSUPPORTED;
bool disable_hpd = false;
+ bool supports_hpd = link->irq_source_hpd != DC_IRQ_SOURCE_INVALID;
bool valid_test_pattern = false;
uint8_t param_nums = 0;
/* init with default 80bit custom pattern */
@@ -849,7 +850,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct
file *f, const char __us
* because it might have been disabled after a test pattern was set.
* AUX depends on HPD * sequence dependent, do not move!
*/
- if (!disable_hpd)
+ if (supports_hpd && !disable_hpd)
dc_link_enable_hpd(link);
prefer_link_settings.lane_count = link->verified_link_cap.lane_count;
@@ -887,7 +888,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct
file *f, const char __us
* Need disable interrupt to avoid SW driver disable DP output. This is
* done after the test pattern is set.
*/
- if (valid_test_pattern && disable_hpd)
+ if (valid_test_pattern && supports_hpd && disable_hpd)
dc_link_disable_hpd(link);
kfree(wr_buf);
--
2.50.1
