From 84e4c879a7c86f4a1f64305eacfdf2cb254cfa03 Mon Sep 17 00:00:00 2001
From: Robin Chen <po-tchen@amd.com>
Date: Thu, 4 Nov 2021 16:52:12 -0400
Subject: drm/amd/display: To support sending TPS3 pattern when restoring link
Git-commit: 548f212514151b0d6ec911c87e61f189f530255b
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
[Why]
Some panels require to use TPS3 pattern to wake up link in PSR mode.
[How]
To add TPS3 selection information in PSR settings command and pass to
DMUB FW.
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Robin Chen <po-tchen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c | 9 +++++++++
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 5 ++---
drivers/gpu/drm/amd/display/include/ddc_service_types.h | 3 +++
3 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
index e9c0ec2ec4ce..60b2ccffaf90 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
@@ -330,6 +330,15 @@ static bool dmub_psr_copy_settings(struct dmub_psr *dmub,
copy_settings_data->cmd_version = DMUB_CMD_PSR_CONTROL_VERSION_1;
copy_settings_data->panel_inst = panel_inst;
+ if (link->fec_state == dc_link_fec_enabled &&
+ (!memcmp(link->dpcd_caps.sink_dev_id_str, DP_SINK_DEVICE_STR_ID_1,
+ sizeof(link->dpcd_caps.sink_dev_id_str)) ||
+ !memcmp(link->dpcd_caps.sink_dev_id_str, DP_SINK_DEVICE_STR_ID_2,
+ sizeof(link->dpcd_caps.sink_dev_id_str))))
+ copy_settings_data->debug.bitfields.force_wakeup_by_tps3 = 1;
+ else
+ copy_settings_data->debug.bitfields.force_wakeup_by_tps3 = 0;
+
dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd);
dc_dmub_srv_cmd_execute(dc->dmub_srv);
dc_dmub_srv_wait_idle(dc->dmub_srv);
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index c29a67ccef17..de624fd7a2e3 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -208,10 +208,9 @@ union dmub_psr_debug_flags {
uint32_t use_hw_lock_mgr : 1;
/**
- * Unused.
- * TODO: Remove.
+ * Use TPS3 signal when restore main link.
*/
- uint32_t log_line_nums : 1;
+ uint32_t force_wakeup_by_tps3 : 1;
} bitfields;
/**
diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h
index 4de59b66bb1a..85b25e684464 100644
--- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h
+++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h
@@ -117,4 +117,7 @@ struct av_sync_data {
uint8_t aud_del_ins3;/* DPCD 0002Dh */
};
+static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = {7, 1, 8, 7, 3, 0};
+static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = {7, 1, 8, 7, 5, 0};
+
#endif /* __DAL_DDC_SERVICE_TYPES_H__ */
--
2.38.1