LXR linux/drivers/gpu/drm/amd/display/dc/dce100/dce100_hw

   1/*
   2 * Copyright 2015 Advanced Micro Devices, Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 * Authors: AMD
  23 *
  24 */
  25#include "dm_services.h"
  26#include "dc.h"
  27#include "core_types.h"
  28#include "clk_mgr.h"
  29#include "dce100_hw_sequencer.h"
  30#include "resource.h"
  31
  32#include "dce110/dce110_hw_sequencer.h"
  33
  34/* include DCE10 register header files */
  35#include "dce/dce_10_0_d.h"
  36#include "dce/dce_10_0_sh_mask.h"
  37
  38struct dce100_hw_seq_reg_offsets {
  39        uint32_t blnd;
  40        uint32_t crtc;
  41};
  42
  43static const struct dce100_hw_seq_reg_offsets reg_offsets[] = {
  44{
  45        .crtc = (mmCRTC0_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
  46},
  47{
  48        .crtc = (mmCRTC1_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
  49},
  50{
  51        .crtc = (mmCRTC2_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
  52},
  53{
  54        .crtc = (mmCRTC3_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
  55},
  56{
  57        .crtc = (mmCRTC4_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
  58},
  59{
  60        .crtc = (mmCRTC5_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
  61}
  62};
  63
  64#define HW_REG_CRTC(reg, id)\
  65        (reg + reg_offsets[id].crtc)
  66
  67/*******************************************************************************
  68 * Private definitions
  69 ******************************************************************************/
  70/***************************PIPE_CONTROL***********************************/
  71
  72bool dce100_enable_display_power_gating(
  73        struct dc *dc,
  74        uint8_t controller_id,
  75        struct dc_bios *dcb,
  76        enum pipe_gating_control power_gating)
  77{
  78        enum bp_result bp_result = BP_RESULT_OK;
  79        enum bp_pipe_control_action cntl;
  80        struct dc_context *ctx = dc->ctx;
  81
  82        if (power_gating == PIPE_GATING_CONTROL_INIT)
  83                cntl = ASIC_PIPE_INIT;
  84        else if (power_gating == PIPE_GATING_CONTROL_ENABLE)
  85                cntl = ASIC_PIPE_ENABLE;
  86        else
  87                cntl = ASIC_PIPE_DISABLE;
  88
  89        if (!(power_gating == PIPE_GATING_CONTROL_INIT && controller_id != 0)){
  90
  91                bp_result = dcb->funcs->enable_disp_power_gating(
  92                                                dcb, controller_id + 1, cntl);
  93
  94                /* Revert MASTER_UPDATE_MODE to 0 because bios sets it 2
  95                 * by default when command table is called
  96                 */
  97                dm_write_reg(ctx,
  98                        HW_REG_CRTC(mmMASTER_UPDATE_MODE, controller_id),
  99                        0);
 100        }
 101
 102        if (bp_result == BP_RESULT_OK)
 103                return true;
 104        else
 105                return false;
 106}
 107
 108void dce100_prepare_bandwidth(
 109                struct dc *dc,
 110                struct dc_state *context)
 111{
 112        dce110_set_safe_displaymarks(&context->res_ctx, dc->res_pool);
 113
 114        dc->clk_mgr->funcs->update_clocks(
 115                        dc->clk_mgr,
 116                        context,
 117                        false);
 118}
 119
 120void dce100_optimize_bandwidth(
 121                struct dc *dc,
 122                struct dc_state *context)
 123{
 124        dce110_set_safe_displaymarks(&context->res_ctx, dc->res_pool);
 125
 126        dc->clk_mgr->funcs->update_clocks(
 127                        dc->clk_mgr,
 128                        context,
 129                        true);
 130}
 131
 132/**************************************************************************/
 133
 134void dce100_hw_sequencer_construct(struct dc *dc)
 135{
 136        dce110_hw_sequencer_construct(dc);
 137
 138        dc->hwseq->funcs.enable_display_power_gating = dce100_enable_display_power_gating;
 139        dc->hwss.prepare_bandwidth = dce100_prepare_bandwidth;
 140        dc->hwss.optimize_bandwidth = dce100_optimize_bandwidth;
 141}
 142
 143