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authorRelja Vojvodic <relja.vojvodic@amd.com>2024-06-04 15:23:15 +0200
committerAlex Deucher <alexander.deucher@amd.com>2024-06-14 22:18:27 +0200
commit8867ae8cfab44189bbbbbaaff0465ec6e0f616aa (patch)
treedfd0f4045c1965fb64b3d5442b60f07cd954d105 /drivers/gpu/drm/amd
parentdrm/amd/display: Enable DCN401 idle optimizations by default (diff)
downloadlinux-8867ae8cfab44189bbbbbaaff0465ec6e0f616aa.tar.xz
linux-8867ae8cfab44189bbbbbaaff0465ec6e0f616aa.zip
drm/amd/display: Add dcn401 DIG fifo enable/disable
[Why] Found while hotplugging MST daisy chain displays. Changing dispclk during this sequence caused SMU hang due to DIG fifo not being disabled correctly (caused by missing functions). [How] Adding disable/enable DIG fifo functions for dcn401 Reviewed-by: Wenjing Liu <wenjing.liu@amd.com> Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Relja Vojvodic <relja.vojvodic@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
-rw-r--r--drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.c4
-rw-r--r--drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.h6
-rw-r--r--drivers/gpu/drm/amd/display/dc/dcn401/dcn401_dio_stream_encoder.c4
3 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.c
index 1325db3a4ed0..6a179e5ab417 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.c
@@ -392,7 +392,7 @@ static void enc35_reset_fifo(struct stream_encoder *enc, bool reset)
udelay(10);
}
-static void enc35_disable_fifo(struct stream_encoder *enc)
+void enc35_disable_fifo(struct stream_encoder *enc)
{
struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
@@ -401,7 +401,7 @@ static void enc35_disable_fifo(struct stream_encoder *enc)
REG_UPDATE(DIG_FE_CLK_CNTL, DIG_FE_CLK_EN, 0);
}
-static void enc35_enable_fifo(struct stream_encoder *enc)
+void enc35_enable_fifo(struct stream_encoder *enc)
{
struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.h b/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.h
index 1212fcee38f2..ddb33fdfb4ee 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_dio_stream_encoder.h
@@ -322,5 +322,11 @@ void enc3_dp_set_dsc_pps_info_packet(
uint8_t *dsc_packed_pps,
bool immediate_update);
+void enc35_disable_fifo(
+ struct stream_encoder *enc);
+
+void enc35_enable_fifo(
+ struct stream_encoder *enc);
+
#endif /* __DC_DIO_STREAM_ENCODER_DCN35_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/dcn401/dcn401_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn401/dcn401_dio_stream_encoder.c
index 2ebfca4769aa..0a27e0942a12 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn401/dcn401_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn401/dcn401_dio_stream_encoder.c
@@ -27,6 +27,7 @@
#include "dc_bios_types.h"
#include "dcn30/dcn30_dio_stream_encoder.h"
#include "dcn32/dcn32_dio_stream_encoder.h"
+#include "dcn35/dcn35_dio_stream_encoder.h"
#include "dcn401_dio_stream_encoder.h"
#include "reg_helper.h"
@@ -764,7 +765,8 @@ static const struct stream_encoder_funcs dcn401_str_enc_funcs = {
.enable_stream = enc401_stream_encoder_enable,
.set_input_mode = enc401_set_dig_input_mode,
- .enable_fifo = enc32_enable_fifo,
+ .enable_fifo = enc35_enable_fifo,
+ .disable_fifo = enc35_disable_fifo,
.map_stream_to_link = enc401_stream_encoder_map_to_link,
};