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/*
* Copyright 2020 Mauro Rossi <issor.oruam@gmail.com>
*
* 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 "dccg.h"
#include "clk_mgr_internal.h"
#include "dce100/dce_clk_mgr.h"
#include "dce110/dce110_clk_mgr.h"
#include "dce60_clk_mgr.h"
#include "reg_helper.h"
#include "dmcu.h"
#include "core_types.h"
#include "dal_asic_id.h"
/*
* Currently the register shifts and masks in this file are used for dce60
* which has no DPREFCLK_CNTL register
* TODO: remove this when DENTIST_DISPCLK_CNTL
* is moved to dccg, where it belongs
*/
#include "dce/dce_6_0_d.h"
#include "dce/dce_6_0_sh_mask.h"
#define REG(reg) \
(clk_mgr->regs->reg)
#undef FN
#define FN(reg_name, field_name) \
clk_mgr->clk_mgr_shift->field_name, clk_mgr->clk_mgr_mask->field_name
/* set register offset */
#define SR(reg_name)\
.reg_name = mm ## reg_name
static const struct clk_mgr_registers disp_clk_regs = {
CLK_COMMON_REG_LIST_DCE60_BASE()
};
static const struct clk_mgr_shift disp_clk_shift = {
CLK_COMMON_MASK_SH_LIST_DCE60_COMMON_BASE(__SHIFT)
};
static const struct clk_mgr_mask disp_clk_mask = {
CLK_COMMON_MASK_SH_LIST_DCE60_COMMON_BASE(_MASK)
};
/* Max clock values for each state indexed by "enum clocks_state": */
static const struct state_dependent_clocks dce60_max_clks_by_state[] = {
/* ClocksStateInvalid - should not be used */
{ .display_clk_khz = 0, .pixel_clk_khz = 0 },
/* ClocksStateUltraLow - not expected to be used for DCE 6.0 */
{ .display_clk_khz = 0, .pixel_clk_khz = 0 },
/* ClocksStateLow */
{ .display_clk_khz = 352000, .pixel_clk_khz = 330000},
/* ClocksStateNominal */
{ .display_clk_khz = 600000, .pixel_clk_khz = 400000 },
/* ClocksStatePerformance */
{ .display_clk_khz = 600000, .pixel_clk_khz = 400000 } };
int dce60_get_dp_ref_freq_khz(struct clk_mgr *clk_mgr_base)
{
struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
int dprefclk_wdivider;
int dp_ref_clk_khz;
int target_div;
/* DCE6 has no DPREFCLK_CNTL to read DP Reference Clock source */
/* Read the mmDENTIST_DISPCLK_CNTL to get the currently
* programmed DID DENTIST_DPREFCLK_WDIVIDER*/
REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DPREFCLK_WDIVIDER, &dprefclk_wdivider);
/* Convert DENTIST_DPREFCLK_WDIVIDERto actual divider*/
target_div = dentist_get_divider_from_did(dprefclk_wdivider);
/* Calculate the current DFS clock, in kHz.*/
dp_ref_clk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR
* clk_mgr->base.dentist_vco_freq_khz) / target_div;
return dce_adjust_dp_ref_freq_for_ss(clk_mgr, dp_ref_clk_khz);
}
static void dce60_pplib_apply_display_requirements(
struct dc *dc,
struct dc_state *context)
{
struct dm_pp_display_configuration *pp_display_cfg = &context->pp_display_cfg;
pp_display_cfg->avail_mclk_switch_time_us = dce110_get_min_vblank_time_us(context);
dce110_fill_display_configs(context, pp_display_cfg);
if (memcmp(&dc->current_state->pp_display_cfg, pp_display_cfg, sizeof(*pp_display_cfg)) != 0)
dm_pp_apply_display_requirements(dc->ctx, pp_display_cfg);
}
static void dce60_update_clocks(struct clk_mgr *clk_mgr_base,
struct dc_state *context,
bool safe_to_lower)
{
struct clk_mgr_internal *clk_mgr_dce = TO_CLK_MGR_INTERNAL(clk_mgr_base);
struct dm_pp_power_level_change_request level_change_req;
int patched_disp_clk = context->bw_ctx.bw.dce.dispclk_khz;
/*TODO: W/A for dal3 linux, investigate why this works */
if (!clk_mgr_dce->dfs_bypass_active)
patched_disp_clk = patched_disp_clk * 115 / 100;
level_change_req.power_level = dce_get_required_clocks_state(clk_mgr_base, context);
/* get max clock state from PPLIB */
if ((level_change_req.power_level < clk_mgr_dce->cur_min_clks_state && safe_to_lower)
|| level_change_req.power_level > clk_mgr_dce->cur_min_clks_state) {
if (dm_pp_apply_power_level_change_request(clk_mgr_base->ctx, &level_change_req))
clk_mgr_dce->cur_min_clks_state = level_change_req.power_level;
}
if (should_set_clock(safe_to_lower, patched_disp_clk, clk_mgr_base->clks.dispclk_khz)) {
patched_disp_clk = dce_set_clock(clk_mgr_base, patched_disp_clk);
clk_mgr_base->clks.dispclk_khz = patched_disp_clk;
}
dce60_pplib_apply_display_requirements(clk_mgr_base->ctx->dc, context);
}
static struct clk_mgr_funcs dce60_funcs = {
.get_dp_ref_clk_frequency = dce60_get_dp_ref_freq_khz,
.update_clocks = dce60_update_clocks
};
void dce60_clk_mgr_construct(
struct dc_context *ctx,
struct clk_mgr_internal *clk_mgr)
{
dce_clk_mgr_construct(ctx, clk_mgr);
memcpy(clk_mgr->max_clks_by_state,
dce60_max_clks_by_state,
sizeof(dce60_max_clks_by_state));
clk_mgr->regs = &disp_clk_regs;
clk_mgr->clk_mgr_shift = &disp_clk_shift;
clk_mgr->clk_mgr_mask = &disp_clk_mask;
clk_mgr->base.funcs = &dce60_funcs;
}
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