[PATCH 02/17] drm/amd/display: prepare for new platform

[IVAN.LIPSKI at amd.com]

From: Karthi Kandasamy <karthi.kandasamy at amd.com>

Expose some function for new platform use and add additionl check for
IP register

Reviewed-by: Nevenko Stupar <nevenko.stupar at amd.com>
Signed-off-by: Karthi Kandasamy <karthi.kandasamy at amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dsc/dsc.h           |  1 +
 .../drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c  | 14 ++++++++------
 .../drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.h  |  1 +
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dsc.h b/drivers/gpu/drm/amd/display/dc/dsc/dsc.h
index 1ebce5426a58..b0bd1f9425b5 100644
--- a/drivers/gpu/drm/amd/display/dc/dsc/dsc.h
+++ b/drivers/gpu/drm/amd/display/dc/dsc/dsc.h
@@ -108,6 +108,7 @@ struct dsc_funcs {
 	void (*dsc_disable)(struct display_stream_compressor *dsc);
 	void (*dsc_disconnect)(struct display_stream_compressor *dsc);
 	void (*dsc_wait_disconnect_pending_clear)(struct display_stream_compressor *dsc);
+	void (*dsc_get_single_enc_caps)(struct dsc_enc_caps *dsc_enc_caps, unsigned int max_dscclk_khz);
 };
 
 #endif
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
index a0d61df07f22..cc9f40d97af2 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
@@ -51,7 +51,7 @@
 #define FN(reg_name, field_name) \
 	hws->shifts->field_name, hws->masks->field_name
 
-static void dcn401_initialize_min_clocks(struct dc *dc)
+void dcn401_initialize_min_clocks(struct dc *dc)
 {
 	struct dc_clocks *clocks = &dc->current_state->bw_ctx.bw.dcn.clk;
 
@@ -2632,10 +2632,12 @@ void dcn401_plane_atomic_power_down(struct dc *dc,
 
 	DC_LOGGER_INIT(dc->ctx->logger);
 
-	REG_GET(DC_IP_REQUEST_CNTL, IP_REQUEST_EN, &org_ip_request_cntl);
-	if (org_ip_request_cntl == 0)
-		REG_SET(DC_IP_REQUEST_CNTL, 0,
-			IP_REQUEST_EN, 1);
+	if (REG(DC_IP_REQUEST_CNTL)) {
+		REG_GET(DC_IP_REQUEST_CNTL, IP_REQUEST_EN, &org_ip_request_cntl);
+		if (org_ip_request_cntl == 0)
+			REG_SET(DC_IP_REQUEST_CNTL, 0,
+				IP_REQUEST_EN, 1);
+	}
 
 	if (hws->funcs.dpp_pg_control)
 		hws->funcs.dpp_pg_control(hws, dpp->inst, false);
@@ -2646,7 +2648,7 @@ void dcn401_plane_atomic_power_down(struct dc *dc,
 	hubp->funcs->hubp_reset(hubp);
 	dpp->funcs->dpp_reset(dpp);
 
-	if (org_ip_request_cntl == 0)
+	if (org_ip_request_cntl == 0 && REG(DC_IP_REQUEST_CNTL))
 		REG_SET(DC_IP_REQUEST_CNTL, 0,
 			IP_REQUEST_EN, 0);
 
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.h b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.h
index 781cf0efccc6..2621b7725267 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.h
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.h
@@ -109,4 +109,5 @@ void dcn401_detect_pipe_changes(
 void dcn401_plane_atomic_power_down(struct dc *dc,
 		struct dpp *dpp,
 		struct hubp *hubp);
+void dcn401_initialize_min_clocks(struct dc *dc);
 #endif /* __DC_HWSS_DCN401_H__ */
-- 
2.43.0