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>

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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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