cregit-Linux how code gets into the kernel

Release 4.17 drivers/gpu/drm/amd/display/dc/dce112/dce112_hw_sequencer.c

/*
 * Copyright 2015 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 "dm_services.h"
#include "dc.h"
#include "core_types.h"
#include "dce112_hw_sequencer.h"

#include "dce110/dce110_hw_sequencer.h"

/* include DCE11.2 register header files */
#include "dce/dce_11_2_d.h"
#include "dce/dce_11_2_sh_mask.h"


struct dce112_hw_seq_reg_offsets {
	
uint32_t crtc;
};



static const struct dce112_hw_seq_reg_offsets reg_offsets[] = {
{
	.crtc = (mmCRTC0_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
},
{
	.crtc = (mmCRTC1_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
},
{
	.crtc = (mmCRTC2_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
},
{
	.crtc = (mmCRTC3_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
},
{
	.crtc = (mmCRTC4_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
},
{
	.crtc = (mmCRTC5_CRTC_GSL_CONTROL - mmCRTC_GSL_CONTROL),
}
};

#define HW_REG_CRTC(reg, id)\
	(reg + reg_offsets[id].crtc)

/*******************************************************************************
 * Private definitions
 ******************************************************************************/


static void dce112_init_pte(struct dc_context *ctx) { uint32_t addr; uint32_t value = 0; uint32_t chunk_int = 0; uint32_t chunk_mul = 0; addr = mmDVMM_PTE_REQ; value = dm_read_reg(ctx, addr); chunk_int = get_reg_field_value( value, DVMM_PTE_REQ, HFLIP_PTEREQ_PER_CHUNK_INT); chunk_mul = get_reg_field_value( value, DVMM_PTE_REQ, HFLIP_PTEREQ_PER_CHUNK_MULTIPLIER); if (chunk_int != 0x4 || chunk_mul != 0x4) { set_reg_field_value( value, 255, DVMM_PTE_REQ, MAX_PTEREQ_TO_ISSUE); set_reg_field_value( value, 4, DVMM_PTE_REQ, HFLIP_PTEREQ_PER_CHUNK_INT); set_reg_field_value( value, 4, DVMM_PTE_REQ, HFLIP_PTEREQ_PER_CHUNK_MULTIPLIER); dm_write_reg(ctx, addr, value); } }

Contributors

PersonTokensPropCommitsCommitProp
Harry Wentland118100.00%1100.00%
Total118100.00%1100.00%


static bool dce112_enable_display_power_gating( struct dc *dc, uint8_t controller_id, struct dc_bios *dcb, enum pipe_gating_control power_gating) { enum bp_result bp_result = BP_RESULT_OK; enum bp_pipe_control_action cntl; struct dc_context *ctx = dc->ctx; if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment)) return true; if (power_gating == PIPE_GATING_CONTROL_INIT) cntl = ASIC_PIPE_INIT; else if (power_gating == PIPE_GATING_CONTROL_ENABLE) cntl = ASIC_PIPE_ENABLE; else cntl = ASIC_PIPE_DISABLE; if (power_gating != PIPE_GATING_CONTROL_INIT || controller_id == 0){ bp_result = dcb->funcs->enable_disp_power_gating( dcb, controller_id + 1, cntl); /* Revert MASTER_UPDATE_MODE to 0 because bios sets it 2 * by default when command table is called */ dm_write_reg(ctx, HW_REG_CRTC(mmCRTC_MASTER_UPDATE_MODE, controller_id), 0); } if (power_gating != PIPE_GATING_CONTROL_ENABLE) dce112_init_pte(ctx); if (bp_result == BP_RESULT_OK) return true; else return false; }

Contributors

PersonTokensPropCommitsCommitProp
Harry Wentland14799.32%150.00%
Bhawanpreet Lakha10.68%150.00%
Total148100.00%2100.00%


void dce112_hw_sequencer_construct(struct dc *dc) { /* All registers used by dce11.2 match those in dce11 in offset and * structure */ dce110_hw_sequencer_construct(dc); dc->hwss.enable_display_power_gating = dce112_enable_display_power_gating; }

Contributors

PersonTokensPropCommitsCommitProp
Harry Wentland2291.67%133.33%
Dave Airlie14.17%133.33%
Bhawanpreet Lakha14.17%133.33%
Total24100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Harry Wentland40499.26%133.33%
Bhawanpreet Lakha20.49%133.33%
Dave Airlie10.25%133.33%
Total407100.00%3100.00%
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