From: Jacky Liao <[email protected]> [Why] The GAMCOR memory blocks should be powered down when they're not in use. This will reduce power consumption.
[How] Write to GAMCOR_MEM_PWR_FORCE to put memory to shutdown when GAMCOR is not used. Signed-off-by: Jacky Liao <[email protected]> Reviewed-by: Eric Yang <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> --- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c index 9ab63c72f21c..9da66e491116 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c @@ -136,9 +136,13 @@ static void dpp3_power_on_gamcor_lut( uint32_t power_status; struct dcn3_dpp *dpp = TO_DCN30_DPP(dpp_base); - - REG_SET(CM_MEM_PWR_CTRL, 0, - GAMCOR_MEM_PWR_DIS, power_on == true ? 0:1); + if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.cm) { + REG_UPDATE(CM_MEM_PWR_CTRL, GAMCOR_MEM_PWR_FORCE, power_on ? 0 : 3); + if (power_on) + REG_WAIT(CM_MEM_PWR_STATUS, GAMCOR_MEM_PWR_STATE, 0, 1, 5); + } else + REG_SET(CM_MEM_PWR_CTRL, 0, + GAMCOR_MEM_PWR_DIS, power_on == true ? 0:1); REG_GET(CM_MEM_PWR_STATUS, GAMCOR_MEM_PWR_STATE, &power_status); if (power_status != 0) @@ -229,6 +233,8 @@ bool dpp3_program_gamcor_lut( if (params == NULL) { //bypass if we have no pwl data REG_SET(CM_GAMCOR_CONTROL, 0, CM_GAMCOR_MODE, 0); + if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.cm) + dpp3_power_on_gamcor_lut(dpp_base, false); return false; } dpp3_power_on_gamcor_lut(dpp_base, true); -- 2.29.2 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
