1 files changed, 88 insertions, 0 deletions
diff --git a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0488-drm-amd-display-Add-function-to-get-PSR-state.patch b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0488-drm-amd-display-Add-function-to-get-PSR-state.patch
new file mode 100644
index 00000000..348a5441
--- /dev/null
+++ b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0488-drm-amd-display-Add-function-to-get-PSR-state.patch
@@ -0,0 +1,88 @@
+From 02d65d11da2f6c9cdcd9002bc70bd9bc51a8d503 Mon Sep 17 00:00:00 2001
+From: Amy Zhang <Amy.Zhang@amd.com>
+Date: Tue, 30 May 2017 16:16:57 -0400
+Subject: [PATCH 0488/4131] drm/amd/display: Add function to get PSR state
+
+Signed-off-by: Amy Zhang <Amy.Zhang@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@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/core/dc_link.c | 13 +++++++++++++
+ drivers/gpu/drm/amd/display/dc/dc.h           |  2 ++
+ drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c |  2 ++
+ drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h  |  1 +
+ 4 files changed, 18 insertions(+)
+
+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 79f3947..318aaa7 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+@@ -1444,6 +1444,19 @@ bool dc_link_set_psr_enable(const struct dc_link *dc_link, bool enable)
+ 	return true;
+ }
+ 
++bool dc_link_get_psr_state(const struct dc_link *dc_link, uint32_t *psr_state)
++{
++	struct core_link *link = DC_LINK_TO_CORE(dc_link);
++	struct dc_context *ctx = link->ctx;
++	struct core_dc *core_dc = DC_TO_CORE(ctx->dc);
++	struct dmcu *dmcu = core_dc->res_pool->dmcu;
++
++	if (dmcu != NULL && link->psr_enabled)
++		dmcu->funcs->get_psr_state(dmcu, psr_state);
++
++	return true;
++}
++
+ bool dc_link_setup_psr(const struct dc_link *dc_link,
+ 		const struct dc_stream *stream, struct psr_config *psr_config)
+ {
+diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
+index ce052d1..328bfcb 100644
+--- a/drivers/gpu/drm/amd/display/dc/dc.h
++++ b/drivers/gpu/drm/amd/display/dc/dc.h
+@@ -702,6 +702,8 @@ bool dc_link_set_abm_disable(const struct dc_link *dc_link);
+ 
+ bool dc_link_set_psr_enable(const struct dc_link *dc_link, bool enable);
+ 
++bool dc_link_get_psr_state(const struct dc_link *dc_link, uint32_t *psr_state);
++
+ bool dc_link_setup_psr(const struct dc_link *dc_link,
+ 		const struct dc_stream *stream, struct psr_config *psr_config);
+ 
+diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c b/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c
+index c58328c..03b51e2 100644
+--- a/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c
++++ b/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c
+@@ -470,6 +470,7 @@ static const struct dmcu_funcs dce_funcs = {
+ 	.load_iram = dce_dmcu_load_iram,
+ 	.set_psr_enable = dce_dmcu_set_psr_enable,
+ 	.setup_psr = dce_dmcu_setup_psr,
++	.get_psr_state = dce_get_dmcu_psr_state
+ };
+ 
+ #if defined(CONFIG_DRM_AMD_DC_DCN1_0)
+@@ -477,6 +478,7 @@ static const struct dmcu_funcs dcn10_funcs = {
+ 	.load_iram = dcn10_dmcu_load_iram,
+ 	.set_psr_enable = dcn10_dmcu_set_psr_enable,
+ 	.setup_psr = dcn10_dmcu_setup_psr,
++	.get_psr_state = dcn10_get_dmcu_psr_state
+ };
+ #endif
+ 
+diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h
+index 656cfdc..dff0bab 100644
+--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h
++++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h
+@@ -41,6 +41,7 @@ struct dmcu_funcs {
+ 	void (*setup_psr)(struct dmcu *dmcu,
+ 			struct core_link *link,
+ 			struct psr_context *psr_context);
++	void (*get_psr_state)(struct dmcu *dmcu, uint32_t *psr_state);
+ };
+ 
+ #endif
+-- 
+2.7.4
+