diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c index 9fbb72369c10..5947c2cb0f30 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c @@ -41,6 +41,10 @@ #define FN(reg_name, field_name) \ hubbub2->shifts->field_name, hubbub2->masks->field_name +/** + * @DCN32_CRB_SEGMENT_SIZE_KB: Maximum Configurable Return Buffer size for + * DCN32 + */ #define DCN32_CRB_SEGMENT_SIZE_KB 64 static void dcn32_init_crb(struct hubbub *hubbub) @@ -68,6 +72,23 @@ static void dcn32_init_crb(struct hubbub *hubbub) REG_UPDATE(DCHUBBUB_DEBUG_CTRL_0, DET_DEPTH, 0x47F); } +void hubbub32_set_request_limit(struct hubbub *hubbub, int memory_channel_count, int words_per_channel) +{ + struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub); + + uint32_t request_limit = 3 * memory_channel_count * words_per_channel / 4; + + ASSERT((request_limit & (~0xFFF)) == 0); //field is only 24 bits long + ASSERT(request_limit > 0); //field is only 24 bits long + + if (request_limit > 0xFFF) + request_limit = 0xFFF; + + if (request_limit > 0) + REG_UPDATE(SDPIF_REQUEST_RATE_LIMIT, SDPIF_REQUEST_RATE_LIMIT, request_limit); +} + + void dcn32_program_det_size(struct hubbub *hubbub, int hubp_inst, unsigned int det_buffer_size_in_kbyte) { struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub); @@ -945,6 +966,7 @@ static const struct hubbub_funcs hubbub32_funcs = { .init_crb = dcn32_init_crb, .hubbub_read_state = hubbub2_read_state, .force_usr_retraining_allow = hubbub32_force_usr_retraining_allow, + .set_request_limit = hubbub32_set_request_limit }; void hubbub32_construct(struct dcn20_hubbub *hubbub2, |