/*
* Copyright 2018 Advanced Micro Devices , Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
* Authors : AMD
*
*/
#include "reg_helper.h"
#include "core_types.h"
#include "dcn20/dcn20_dccg.h"
#include "dcn21_dccg.h"
#define TO_DCN_DCCG(dccg)\
container_of(dccg, struct dcn_dccg, base)
#define REG(reg) \
(dccg_dcn->regs->reg)
#undef FN
#define FN(reg_name, field_name) \
dccg_dcn->dccg_shift->field_name, dccg_dcn->dccg_mask->field_name
#define CTX \
dccg_dcn->base.ctx
#define DC_LOGGER \
dccg->ctx->logger
static void dccg21_update_dpp_dto(struct dccg *dccg, int dpp_inst, int req_dppclk)
{
struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg);
if (dccg->ref_dppclk) {
int ref_dppclk = dccg->ref_dppclk;
int modulo = ref_dppclk / 10000 ;
int phase;
if (req_dppclk) {
/*
* program DPP DTO phase and modulo as below
* phase = ceiling ( dpp_pipe_clk_mhz / 10 )
* module = trunc ( dpp_global_clk_mhz / 10 )
*
* storing frequencies in registers allow dmcub fw
* to run time lower clocks when possible for power saving
*
* ceiling phase and truncate modulo guarentees the divided
* down per pipe dpp clock has high enough frequency
*/
phase = (req_dppclk + 9999 ) / 10000 ;
if (phase > modulo) {
/* phase > modulo result in screen corruption
* ie phase = 30 , mod = 29 for 4 k @ 60 HDMI
* in these case we don ' t want pipe clock to be divided
*/
phase = modulo;
}
} else {
/*
* set phase to 10 if dpp isn ' t used to
* prevent hard hang if access dpp register
* on unused pipe
*
* DTO should be on to divide down un - used
* pipe clock for power saving
*/
phase = 10 ;
}
REG_SET_2(DPPCLK_DTO_PARAM[dpp_inst], 0 ,
DPPCLK0_DTO_PHASE, phase,
DPPCLK0_DTO_MODULO, modulo);
REG_UPDATE(DPPCLK_DTO_CTRL,
DPPCLK_DTO_ENABLE[dpp_inst], 1 );
}
dccg->pipe_dppclk_khz[dpp_inst] = req_dppclk;
}
static const struct dccg_funcs dccg21_funcs = {
.update_dpp_dto = dccg21_update_dpp_dto,
.get_dccg_ref_freq = dccg2_get_dccg_ref_freq,
.set_fifo_errdet_ovr_en = dccg2_set_fifo_errdet_ovr_en,
.otg_add_pixel = dccg2_otg_add_pixel,
.otg_drop_pixel = dccg2_otg_drop_pixel,
.dccg_init = dccg2_init
};
struct dccg *dccg21_create(
struct dc_context *ctx,
const struct dccg_registers *regs,
const struct dccg_shift *dccg_shift,
const struct dccg_mask *dccg_mask)
{
struct dcn_dccg *dccg_dcn = kzalloc(sizeof (*dccg_dcn), GFP_KERNEL);
struct dccg *base;
if (dccg_dcn == NULL) {
BREAK_TO_DEBUGGER();
return NULL;
}
base = &dccg_dcn->base;
base->ctx = ctx;
base->funcs = &dccg21_funcs;
dccg_dcn->regs = regs;
dccg_dcn->dccg_shift = dccg_shift;
dccg_dcn->dccg_mask = dccg_mask;
return &dccg_dcn->base;
}
Messung V0.5 in Prozent C=98 H=100 G=98
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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