openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/amd/display: add dummy PG callback for beige goby 

[Why&How]
PG registers are absent in beige goby, so programming these registers
generate call trace. Fix this by adding a dummy function in dcn303
initialization function which prevents writing to non existant registers.

Fixes: cd6d421e3d ("drm/amd/display: Initial DC support for Beige Goby")
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aurabindo Pillai 2021-06-11 10:31:04 -04:00 committed by Alex Deucher
parent ac3fbe3b2c
commit fb59a9209c
3 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/amd/display/dc/dcn303/dcn303_hwseq.c
View File

@ -38,3 +38,8 @@ void dcn303_dsc_pg_control(struct dce_hwseq *hws, unsigned int dsc_inst, bool po
{
/*DCN303 removes PG registers*/
}
void dcn303_enable_power_gating_plane(struct dce_hwseq *hws, bool enable)
{
/*DCN303 removes PG registers*/
}

1
drivers/gpu/drm/amd/display/dc/dcn303/dcn303_hwseq.h
View File

@ -13,5 +13,6 @@
void dcn303_dpp_pg_control(struct dce_hwseq *hws, unsigned int dpp_inst, bool power_on);
void dcn303_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on);
void dcn303_dsc_pg_control(struct dce_hwseq *hws, unsigned int dsc_inst, bool power_on);
void dcn303_enable_power_gating_plane(struct dce_hwseq *hws, bool enable);
#endif /* __DC_HWSS_DCN303_H__ */

1
drivers/gpu/drm/amd/display/dc/dcn303/dcn303_init.c
View File

@ -16,4 +16,5 @@ void dcn303_hw_sequencer_construct(struct dc *dc)
dc->hwseq->funcs.dpp_pg_control = dcn303_dpp_pg_control;
dc->hwseq->funcs.hubp_pg_control = dcn303_hubp_pg_control;
dc->hwseq->funcs.dsc_pg_control = dcn303_dsc_pg_control;
dc->hwseq->funcs.enable_power_gating_plane = dcn303_enable_power_gating_plane;
}