[PATCH v2 11/19] drm/amd/display: Set PSR level to enable ALPM by default

[David Zhang]

[Why & How]
While support ALPM, do ALPM state transition while PSR entry/exit.
ALPM is needed for PSR-SU feature, and since the function is ready,
we'd enable it by default.

- Add psr level definition to enable/disable ALPM and set ALPM
  powerdone mode.
- Enable ALPM by default

Signed-off-by: David Zhang <dingchen.zhang at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 ++++
 drivers/gpu/drm/amd/display/dc/dc_types.h     | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 1ae48fa65e64..259745074ebb 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3333,6 +3333,10 @@ bool dc_link_setup_psr(struct dc_link *link,
 	 */
 	psr_context->psr_level.bits.DISABLE_PSR_ENTRY_ABORT = 1;
 
+	/* enable ALPM */
+	psr_context->psr_level.bits.DISABLE_ALPM = 0;
+	psr_context->psr_level.bits.ALPM_DEFAULT_PD_MODE = 1;
+
 	/* Controls additional delay after remote frame capture before
 	 * continuing power down, default = 0
 	 */
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index 144c387010c2..26b62f50ac4e 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -698,7 +698,9 @@ union dmcu_psr_level {
 		unsigned int SKIP_AUTO_STATE_ADVANCE:1;
 		unsigned int DISABLE_PSR_ENTRY_ABORT:1;
 		unsigned int SKIP_SINGLE_OTG_DISABLE:1;
-		unsigned int RESERVED:22;
+		unsigned int DISABLE_ALPM:1;
+		unsigned int ALPM_DEFAULT_PD_MODE:1;
+		unsigned int RESERVED:20;
 	} bits;
 	unsigned int u32all;
 };
-- 
2.25.1