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| author | Martin Leung <Martin.Leung@amd.com> | 2021-12-10 15:04:07 -0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-12-14 16:08:41 -0500 |
| commit | 4866b0bfea40cddb7275c88aeb95b47dac3d2a35 (patch) | |
| tree | ddb844499963c8b30b11cb3f3d8cfb12cfb9d496 /drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c | |
| parent | b477143566d5b16c8b92ffec2cb3a896fe818509 (diff) | |
| download | linux-stable-4866b0bfea40cddb7275c88aeb95b47dac3d2a35.tar.gz linux-stable-4866b0bfea40cddb7275c88aeb95b47dac3d2a35.tar.bz2 linux-stable-4866b0bfea40cddb7275c88aeb95b47dac3d2a35.zip | |
drm/amd/display: implement dc_mode_memclk
why:
Need interface to lower clocks when in dc (power save)
mode. Must be able to work with p_state unsupported cases
Can cause flicker when OS notifies us of dc state change
how:
added dal3 interface for KMD
added pathway to query smu for this softmax
added blank before clock change to override underflow
added logic to change clk based on pstatesupport and softmax
added logic in prepare/optimize_bw to conform while changing
clocks
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Martin Leung <Martin.Leung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c index e293b3050cd0..dc1752e9f461 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c @@ -929,6 +929,16 @@ bool hubp2_is_flip_pending(struct hubp *hubp) void hubp2_set_blank(struct hubp *hubp, bool blank) { + hubp2_set_blank_regs(hubp, blank); + + if (blank) { + hubp->mpcc_id = 0xf; + hubp->opp_id = OPP_ID_INVALID; + } +} + +void hubp2_set_blank_regs(struct hubp *hubp, bool blank) +{ struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp); uint32_t blank_en = blank ? 1 : 0; @@ -950,9 +960,6 @@ void hubp2_set_blank(struct hubp *hubp, bool blank) HUBP_NO_OUTSTANDING_REQ, 1, 1, 200); } - - hubp->mpcc_id = 0xf; - hubp->opp_id = OPP_ID_INVALID; } } @@ -1602,6 +1609,7 @@ static struct hubp_funcs dcn20_hubp_funcs = { .hubp_setup_interdependent = hubp2_setup_interdependent, .hubp_set_vm_system_aperture_settings = hubp2_set_vm_system_aperture_settings, .set_blank = hubp2_set_blank, + .set_blank_regs = hubp2_set_blank_regs, .dcc_control = hubp2_dcc_control, .mem_program_viewport = min_set_viewport, .set_cursor_attributes = hubp2_cursor_set_attributes, |