2519 lines
75 KiB
C
2519 lines
75 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#include <linux/string_helpers.h>
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#include "i915_drv.h"
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#include "i915_irq.h"
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#include "intel_backlight_regs.h"
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#include "intel_cdclk.h"
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#include "intel_combo_phy.h"
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#include "intel_de.h"
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#include "intel_display_power.h"
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#include "intel_display_power_map.h"
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#include "intel_display_power_well.h"
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#include "intel_display_types.h"
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#include "intel_dmc.h"
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#include "intel_mchbar_regs.h"
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#include "intel_pch_refclk.h"
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#include "intel_pcode.h"
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#include "intel_snps_phy.h"
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#include "skl_watermark.h"
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#include "vlv_sideband.h"
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#define for_each_power_domain_well(__dev_priv, __power_well, __domain) \
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for_each_power_well(__dev_priv, __power_well) \
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for_each_if(test_bit((__domain), (__power_well)->domains.bits))
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#define for_each_power_domain_well_reverse(__dev_priv, __power_well, __domain) \
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for_each_power_well_reverse(__dev_priv, __power_well) \
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for_each_if(test_bit((__domain), (__power_well)->domains.bits))
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const char *
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intel_display_power_domain_str(enum intel_display_power_domain domain)
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{
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switch (domain) {
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case POWER_DOMAIN_DISPLAY_CORE:
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return "DISPLAY_CORE";
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case POWER_DOMAIN_PIPE_A:
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return "PIPE_A";
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case POWER_DOMAIN_PIPE_B:
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return "PIPE_B";
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case POWER_DOMAIN_PIPE_C:
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return "PIPE_C";
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case POWER_DOMAIN_PIPE_D:
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return "PIPE_D";
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case POWER_DOMAIN_PIPE_PANEL_FITTER_A:
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return "PIPE_PANEL_FITTER_A";
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case POWER_DOMAIN_PIPE_PANEL_FITTER_B:
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return "PIPE_PANEL_FITTER_B";
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case POWER_DOMAIN_PIPE_PANEL_FITTER_C:
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return "PIPE_PANEL_FITTER_C";
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case POWER_DOMAIN_PIPE_PANEL_FITTER_D:
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return "PIPE_PANEL_FITTER_D";
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case POWER_DOMAIN_TRANSCODER_A:
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return "TRANSCODER_A";
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case POWER_DOMAIN_TRANSCODER_B:
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return "TRANSCODER_B";
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case POWER_DOMAIN_TRANSCODER_C:
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return "TRANSCODER_C";
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case POWER_DOMAIN_TRANSCODER_D:
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return "TRANSCODER_D";
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case POWER_DOMAIN_TRANSCODER_EDP:
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return "TRANSCODER_EDP";
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case POWER_DOMAIN_TRANSCODER_DSI_A:
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return "TRANSCODER_DSI_A";
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case POWER_DOMAIN_TRANSCODER_DSI_C:
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return "TRANSCODER_DSI_C";
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case POWER_DOMAIN_TRANSCODER_VDSC_PW2:
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return "TRANSCODER_VDSC_PW2";
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case POWER_DOMAIN_PORT_DDI_LANES_A:
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return "PORT_DDI_LANES_A";
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case POWER_DOMAIN_PORT_DDI_LANES_B:
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return "PORT_DDI_LANES_B";
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case POWER_DOMAIN_PORT_DDI_LANES_C:
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return "PORT_DDI_LANES_C";
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case POWER_DOMAIN_PORT_DDI_LANES_D:
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return "PORT_DDI_LANES_D";
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case POWER_DOMAIN_PORT_DDI_LANES_E:
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return "PORT_DDI_LANES_E";
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case POWER_DOMAIN_PORT_DDI_LANES_F:
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return "PORT_DDI_LANES_F";
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case POWER_DOMAIN_PORT_DDI_LANES_TC1:
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return "PORT_DDI_LANES_TC1";
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case POWER_DOMAIN_PORT_DDI_LANES_TC2:
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return "PORT_DDI_LANES_TC2";
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case POWER_DOMAIN_PORT_DDI_LANES_TC3:
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return "PORT_DDI_LANES_TC3";
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case POWER_DOMAIN_PORT_DDI_LANES_TC4:
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return "PORT_DDI_LANES_TC4";
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case POWER_DOMAIN_PORT_DDI_LANES_TC5:
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return "PORT_DDI_LANES_TC5";
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case POWER_DOMAIN_PORT_DDI_LANES_TC6:
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return "PORT_DDI_LANES_TC6";
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case POWER_DOMAIN_PORT_DDI_IO_A:
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return "PORT_DDI_IO_A";
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case POWER_DOMAIN_PORT_DDI_IO_B:
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return "PORT_DDI_IO_B";
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case POWER_DOMAIN_PORT_DDI_IO_C:
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return "PORT_DDI_IO_C";
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case POWER_DOMAIN_PORT_DDI_IO_D:
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return "PORT_DDI_IO_D";
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case POWER_DOMAIN_PORT_DDI_IO_E:
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return "PORT_DDI_IO_E";
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case POWER_DOMAIN_PORT_DDI_IO_F:
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return "PORT_DDI_IO_F";
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case POWER_DOMAIN_PORT_DDI_IO_TC1:
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return "PORT_DDI_IO_TC1";
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case POWER_DOMAIN_PORT_DDI_IO_TC2:
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return "PORT_DDI_IO_TC2";
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case POWER_DOMAIN_PORT_DDI_IO_TC3:
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return "PORT_DDI_IO_TC3";
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case POWER_DOMAIN_PORT_DDI_IO_TC4:
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return "PORT_DDI_IO_TC4";
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case POWER_DOMAIN_PORT_DDI_IO_TC5:
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return "PORT_DDI_IO_TC5";
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case POWER_DOMAIN_PORT_DDI_IO_TC6:
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return "PORT_DDI_IO_TC6";
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case POWER_DOMAIN_PORT_DSI:
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return "PORT_DSI";
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case POWER_DOMAIN_PORT_CRT:
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return "PORT_CRT";
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case POWER_DOMAIN_PORT_OTHER:
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return "PORT_OTHER";
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case POWER_DOMAIN_VGA:
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return "VGA";
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case POWER_DOMAIN_AUDIO_MMIO:
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return "AUDIO_MMIO";
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case POWER_DOMAIN_AUDIO_PLAYBACK:
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return "AUDIO_PLAYBACK";
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case POWER_DOMAIN_AUX_IO_A:
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return "AUX_IO_A";
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case POWER_DOMAIN_AUX_IO_B:
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return "AUX_IO_B";
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case POWER_DOMAIN_AUX_IO_C:
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return "AUX_IO_C";
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case POWER_DOMAIN_AUX_IO_D:
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return "AUX_IO_D";
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case POWER_DOMAIN_AUX_IO_E:
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return "AUX_IO_E";
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case POWER_DOMAIN_AUX_IO_F:
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return "AUX_IO_F";
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case POWER_DOMAIN_AUX_A:
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return "AUX_A";
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case POWER_DOMAIN_AUX_B:
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return "AUX_B";
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case POWER_DOMAIN_AUX_C:
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return "AUX_C";
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case POWER_DOMAIN_AUX_D:
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return "AUX_D";
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case POWER_DOMAIN_AUX_E:
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return "AUX_E";
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case POWER_DOMAIN_AUX_F:
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return "AUX_F";
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case POWER_DOMAIN_AUX_USBC1:
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return "AUX_USBC1";
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case POWER_DOMAIN_AUX_USBC2:
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return "AUX_USBC2";
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case POWER_DOMAIN_AUX_USBC3:
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return "AUX_USBC3";
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case POWER_DOMAIN_AUX_USBC4:
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return "AUX_USBC4";
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case POWER_DOMAIN_AUX_USBC5:
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return "AUX_USBC5";
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case POWER_DOMAIN_AUX_USBC6:
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return "AUX_USBC6";
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case POWER_DOMAIN_AUX_TBT1:
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return "AUX_TBT1";
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case POWER_DOMAIN_AUX_TBT2:
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return "AUX_TBT2";
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case POWER_DOMAIN_AUX_TBT3:
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return "AUX_TBT3";
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case POWER_DOMAIN_AUX_TBT4:
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return "AUX_TBT4";
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case POWER_DOMAIN_AUX_TBT5:
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return "AUX_TBT5";
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case POWER_DOMAIN_AUX_TBT6:
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return "AUX_TBT6";
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case POWER_DOMAIN_GMBUS:
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return "GMBUS";
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case POWER_DOMAIN_INIT:
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return "INIT";
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case POWER_DOMAIN_MODESET:
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return "MODESET";
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case POWER_DOMAIN_GT_IRQ:
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return "GT_IRQ";
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case POWER_DOMAIN_DC_OFF:
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return "DC_OFF";
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case POWER_DOMAIN_TC_COLD_OFF:
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return "TC_COLD_OFF";
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default:
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MISSING_CASE(domain);
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return "?";
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}
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}
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/**
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* __intel_display_power_is_enabled - unlocked check for a power domain
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* @dev_priv: i915 device instance
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* @domain: power domain to check
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*
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* This is the unlocked version of intel_display_power_is_enabled() and should
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* only be used from error capture and recovery code where deadlocks are
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* possible.
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*
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* Returns:
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* True when the power domain is enabled, false otherwise.
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*/
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bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain)
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{
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struct i915_power_well *power_well;
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bool is_enabled;
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if (dev_priv->runtime_pm.suspended)
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return false;
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is_enabled = true;
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for_each_power_domain_well_reverse(dev_priv, power_well, domain) {
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if (intel_power_well_is_always_on(power_well))
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continue;
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if (!intel_power_well_is_enabled_cached(power_well)) {
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is_enabled = false;
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break;
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}
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}
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return is_enabled;
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}
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/**
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* intel_display_power_is_enabled - check for a power domain
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* @dev_priv: i915 device instance
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* @domain: power domain to check
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*
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* This function can be used to check the hw power domain state. It is mostly
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* used in hardware state readout functions. Everywhere else code should rely
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* upon explicit power domain reference counting to ensure that the hardware
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* block is powered up before accessing it.
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*
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* Callers must hold the relevant modesetting locks to ensure that concurrent
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* threads can't disable the power well while the caller tries to read a few
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* registers.
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*
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* Returns:
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* True when the power domain is enabled, false otherwise.
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*/
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bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain)
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{
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struct i915_power_domains *power_domains;
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bool ret;
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power_domains = &dev_priv->display.power.domains;
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mutex_lock(&power_domains->lock);
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ret = __intel_display_power_is_enabled(dev_priv, domain);
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mutex_unlock(&power_domains->lock);
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return ret;
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}
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static u32
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sanitize_target_dc_state(struct drm_i915_private *dev_priv,
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u32 target_dc_state)
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{
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static const u32 states[] = {
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DC_STATE_EN_UPTO_DC6,
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DC_STATE_EN_UPTO_DC5,
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DC_STATE_EN_DC3CO,
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DC_STATE_DISABLE,
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(states) - 1; i++) {
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if (target_dc_state != states[i])
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continue;
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if (dev_priv->display.dmc.allowed_dc_mask & target_dc_state)
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break;
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target_dc_state = states[i + 1];
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}
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return target_dc_state;
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}
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/**
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* intel_display_power_set_target_dc_state - Set target dc state.
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* @dev_priv: i915 device
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* @state: state which needs to be set as target_dc_state.
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*
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* This function set the "DC off" power well target_dc_state,
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* based upon this target_dc_stste, "DC off" power well will
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* enable desired DC state.
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*/
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void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
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u32 state)
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{
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struct i915_power_well *power_well;
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bool dc_off_enabled;
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struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
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mutex_lock(&power_domains->lock);
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power_well = lookup_power_well(dev_priv, SKL_DISP_DC_OFF);
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if (drm_WARN_ON(&dev_priv->drm, !power_well))
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goto unlock;
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state = sanitize_target_dc_state(dev_priv, state);
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if (state == dev_priv->display.dmc.target_dc_state)
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goto unlock;
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dc_off_enabled = intel_power_well_is_enabled(dev_priv, power_well);
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/*
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* If DC off power well is disabled, need to enable and disable the
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* DC off power well to effect target DC state.
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*/
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if (!dc_off_enabled)
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intel_power_well_enable(dev_priv, power_well);
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dev_priv->display.dmc.target_dc_state = state;
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if (!dc_off_enabled)
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intel_power_well_disable(dev_priv, power_well);
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unlock:
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mutex_unlock(&power_domains->lock);
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}
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#define POWER_DOMAIN_MASK (GENMASK_ULL(POWER_DOMAIN_NUM - 1, 0))
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static void __async_put_domains_mask(struct i915_power_domains *power_domains,
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struct intel_power_domain_mask *mask)
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{
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bitmap_or(mask->bits,
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power_domains->async_put_domains[0].bits,
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power_domains->async_put_domains[1].bits,
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POWER_DOMAIN_NUM);
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}
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
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static bool
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assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
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{
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struct drm_i915_private *i915 = container_of(power_domains,
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struct drm_i915_private,
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display.power.domains);
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return !drm_WARN_ON(&i915->drm,
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bitmap_intersects(power_domains->async_put_domains[0].bits,
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power_domains->async_put_domains[1].bits,
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POWER_DOMAIN_NUM));
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}
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static bool
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__async_put_domains_state_ok(struct i915_power_domains *power_domains)
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{
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struct drm_i915_private *i915 = container_of(power_domains,
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struct drm_i915_private,
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display.power.domains);
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struct intel_power_domain_mask async_put_mask;
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enum intel_display_power_domain domain;
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bool err = false;
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err |= !assert_async_put_domain_masks_disjoint(power_domains);
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__async_put_domains_mask(power_domains, &async_put_mask);
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err |= drm_WARN_ON(&i915->drm,
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!!power_domains->async_put_wakeref !=
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!bitmap_empty(async_put_mask.bits, POWER_DOMAIN_NUM));
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for_each_power_domain(domain, &async_put_mask)
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err |= drm_WARN_ON(&i915->drm,
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power_domains->domain_use_count[domain] != 1);
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return !err;
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}
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static void print_power_domains(struct i915_power_domains *power_domains,
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const char *prefix, struct intel_power_domain_mask *mask)
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{
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struct drm_i915_private *i915 = container_of(power_domains,
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struct drm_i915_private,
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display.power.domains);
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enum intel_display_power_domain domain;
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drm_dbg(&i915->drm, "%s (%d):\n", prefix, bitmap_weight(mask->bits, POWER_DOMAIN_NUM));
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for_each_power_domain(domain, mask)
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drm_dbg(&i915->drm, "%s use_count %d\n",
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intel_display_power_domain_str(domain),
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power_domains->domain_use_count[domain]);
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}
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static void
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print_async_put_domains_state(struct i915_power_domains *power_domains)
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{
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struct drm_i915_private *i915 = container_of(power_domains,
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struct drm_i915_private,
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display.power.domains);
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drm_dbg(&i915->drm, "async_put_wakeref %u\n",
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power_domains->async_put_wakeref);
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print_power_domains(power_domains, "async_put_domains[0]",
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&power_domains->async_put_domains[0]);
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print_power_domains(power_domains, "async_put_domains[1]",
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&power_domains->async_put_domains[1]);
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}
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static void
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verify_async_put_domains_state(struct i915_power_domains *power_domains)
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{
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if (!__async_put_domains_state_ok(power_domains))
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print_async_put_domains_state(power_domains);
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}
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#else
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static void
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assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
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{
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}
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static void
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verify_async_put_domains_state(struct i915_power_domains *power_domains)
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{
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}
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#endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */
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static void async_put_domains_mask(struct i915_power_domains *power_domains,
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struct intel_power_domain_mask *mask)
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{
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assert_async_put_domain_masks_disjoint(power_domains);
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__async_put_domains_mask(power_domains, mask);
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}
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static void
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async_put_domains_clear_domain(struct i915_power_domains *power_domains,
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enum intel_display_power_domain domain)
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{
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assert_async_put_domain_masks_disjoint(power_domains);
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clear_bit(domain, power_domains->async_put_domains[0].bits);
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clear_bit(domain, power_domains->async_put_domains[1].bits);
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}
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static bool
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intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain)
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{
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struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
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struct intel_power_domain_mask async_put_mask;
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bool ret = false;
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async_put_domains_mask(power_domains, &async_put_mask);
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if (!test_bit(domain, async_put_mask.bits))
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goto out_verify;
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async_put_domains_clear_domain(power_domains, domain);
|
|
|
|
ret = true;
|
|
|
|
async_put_domains_mask(power_domains, &async_put_mask);
|
|
if (!bitmap_empty(async_put_mask.bits, POWER_DOMAIN_NUM))
|
|
goto out_verify;
|
|
|
|
cancel_delayed_work(&power_domains->async_put_work);
|
|
intel_runtime_pm_put_raw(&dev_priv->runtime_pm,
|
|
fetch_and_zero(&power_domains->async_put_wakeref));
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
__intel_display_power_get_domain(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *power_well;
|
|
|
|
if (intel_display_power_grab_async_put_ref(dev_priv, domain))
|
|
return;
|
|
|
|
for_each_power_domain_well(dev_priv, power_well, domain)
|
|
intel_power_well_get(dev_priv, power_well);
|
|
|
|
power_domains->domain_use_count[domain]++;
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_get - grab a power domain reference
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
*
|
|
* This function grabs a power domain reference for @domain and ensures that the
|
|
* power domain and all its parents are powered up. Therefore users should only
|
|
* grab a reference to the innermost power domain they need.
|
|
*
|
|
* Any power domain reference obtained by this function must have a symmetric
|
|
* call to intel_display_power_put() to release the reference again.
|
|
*/
|
|
intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
intel_wakeref_t wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
__intel_display_power_get_domain(dev_priv, domain);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
return wakeref;
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_get_if_enabled - grab a reference for an enabled display power domain
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
*
|
|
* This function grabs a power domain reference for @domain and ensures that the
|
|
* power domain and all its parents are powered up. Therefore users should only
|
|
* grab a reference to the innermost power domain they need.
|
|
*
|
|
* Any power domain reference obtained by this function must have a symmetric
|
|
* call to intel_display_power_put() to release the reference again.
|
|
*/
|
|
intel_wakeref_t
|
|
intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
intel_wakeref_t wakeref;
|
|
bool is_enabled;
|
|
|
|
wakeref = intel_runtime_pm_get_if_in_use(&dev_priv->runtime_pm);
|
|
if (!wakeref)
|
|
return false;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
if (__intel_display_power_is_enabled(dev_priv, domain)) {
|
|
__intel_display_power_get_domain(dev_priv, domain);
|
|
is_enabled = true;
|
|
} else {
|
|
is_enabled = false;
|
|
}
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (!is_enabled) {
|
|
intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
|
|
wakeref = 0;
|
|
}
|
|
|
|
return wakeref;
|
|
}
|
|
|
|
static void
|
|
__intel_display_power_put_domain(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains;
|
|
struct i915_power_well *power_well;
|
|
const char *name = intel_display_power_domain_str(domain);
|
|
struct intel_power_domain_mask async_put_mask;
|
|
|
|
power_domains = &dev_priv->display.power.domains;
|
|
|
|
drm_WARN(&dev_priv->drm, !power_domains->domain_use_count[domain],
|
|
"Use count on domain %s is already zero\n",
|
|
name);
|
|
async_put_domains_mask(power_domains, &async_put_mask);
|
|
drm_WARN(&dev_priv->drm,
|
|
test_bit(domain, async_put_mask.bits),
|
|
"Async disabling of domain %s is pending\n",
|
|
name);
|
|
|
|
power_domains->domain_use_count[domain]--;
|
|
|
|
for_each_power_domain_well_reverse(dev_priv, power_well, domain)
|
|
intel_power_well_put(dev_priv, power_well);
|
|
}
|
|
|
|
static void __intel_display_power_put(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
__intel_display_power_put_domain(dev_priv, domain);
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
static void
|
|
queue_async_put_domains_work(struct i915_power_domains *power_domains,
|
|
intel_wakeref_t wakeref)
|
|
{
|
|
struct drm_i915_private *i915 = container_of(power_domains,
|
|
struct drm_i915_private,
|
|
display.power.domains);
|
|
drm_WARN_ON(&i915->drm, power_domains->async_put_wakeref);
|
|
power_domains->async_put_wakeref = wakeref;
|
|
drm_WARN_ON(&i915->drm, !queue_delayed_work(system_unbound_wq,
|
|
&power_domains->async_put_work,
|
|
msecs_to_jiffies(100)));
|
|
}
|
|
|
|
static void
|
|
release_async_put_domains(struct i915_power_domains *power_domains,
|
|
struct intel_power_domain_mask *mask)
|
|
{
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(power_domains, struct drm_i915_private,
|
|
display.power.domains);
|
|
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
|
|
enum intel_display_power_domain domain;
|
|
intel_wakeref_t wakeref;
|
|
|
|
/*
|
|
* The caller must hold already raw wakeref, upgrade that to a proper
|
|
* wakeref to make the state checker happy about the HW access during
|
|
* power well disabling.
|
|
*/
|
|
assert_rpm_raw_wakeref_held(rpm);
|
|
wakeref = intel_runtime_pm_get(rpm);
|
|
|
|
for_each_power_domain(domain, mask) {
|
|
/* Clear before put, so put's sanity check is happy. */
|
|
async_put_domains_clear_domain(power_domains, domain);
|
|
__intel_display_power_put_domain(dev_priv, domain);
|
|
}
|
|
|
|
intel_runtime_pm_put(rpm, wakeref);
|
|
}
|
|
|
|
static void
|
|
intel_display_power_put_async_work(struct work_struct *work)
|
|
{
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(work, struct drm_i915_private,
|
|
display.power.domains.async_put_work.work);
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
|
|
intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(rpm);
|
|
intel_wakeref_t old_work_wakeref = 0;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
/*
|
|
* Bail out if all the domain refs pending to be released were grabbed
|
|
* by subsequent gets or a flush_work.
|
|
*/
|
|
old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
|
|
if (!old_work_wakeref)
|
|
goto out_verify;
|
|
|
|
release_async_put_domains(power_domains,
|
|
&power_domains->async_put_domains[0]);
|
|
|
|
/* Requeue the work if more domains were async put meanwhile. */
|
|
if (!bitmap_empty(power_domains->async_put_domains[1].bits, POWER_DOMAIN_NUM)) {
|
|
bitmap_copy(power_domains->async_put_domains[0].bits,
|
|
power_domains->async_put_domains[1].bits,
|
|
POWER_DOMAIN_NUM);
|
|
bitmap_zero(power_domains->async_put_domains[1].bits,
|
|
POWER_DOMAIN_NUM);
|
|
queue_async_put_domains_work(power_domains,
|
|
fetch_and_zero(&new_work_wakeref));
|
|
} else {
|
|
/*
|
|
* Cancel the work that got queued after this one got dequeued,
|
|
* since here we released the corresponding async-put reference.
|
|
*/
|
|
cancel_delayed_work(&power_domains->async_put_work);
|
|
}
|
|
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (old_work_wakeref)
|
|
intel_runtime_pm_put_raw(rpm, old_work_wakeref);
|
|
if (new_work_wakeref)
|
|
intel_runtime_pm_put_raw(rpm, new_work_wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_put_async - release a power domain reference asynchronously
|
|
* @i915: i915 device instance
|
|
* @domain: power domain to reference
|
|
* @wakeref: wakeref acquired for the reference that is being released
|
|
*
|
|
* This function drops the power domain reference obtained by
|
|
* intel_display_power_get*() and schedules a work to power down the
|
|
* corresponding hardware block if this is the last reference.
|
|
*/
|
|
void __intel_display_power_put_async(struct drm_i915_private *i915,
|
|
enum intel_display_power_domain domain,
|
|
intel_wakeref_t wakeref)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
struct intel_runtime_pm *rpm = &i915->runtime_pm;
|
|
intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(rpm);
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
if (power_domains->domain_use_count[domain] > 1) {
|
|
__intel_display_power_put_domain(i915, domain);
|
|
|
|
goto out_verify;
|
|
}
|
|
|
|
drm_WARN_ON(&i915->drm, power_domains->domain_use_count[domain] != 1);
|
|
|
|
/* Let a pending work requeue itself or queue a new one. */
|
|
if (power_domains->async_put_wakeref) {
|
|
set_bit(domain, power_domains->async_put_domains[1].bits);
|
|
} else {
|
|
set_bit(domain, power_domains->async_put_domains[0].bits);
|
|
queue_async_put_domains_work(power_domains,
|
|
fetch_and_zero(&work_wakeref));
|
|
}
|
|
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (work_wakeref)
|
|
intel_runtime_pm_put_raw(rpm, work_wakeref);
|
|
|
|
intel_runtime_pm_put(rpm, wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_flush_work - flushes the async display power disabling work
|
|
* @i915: i915 device instance
|
|
*
|
|
* Flushes any pending work that was scheduled by a preceding
|
|
* intel_display_power_put_async() call, completing the disabling of the
|
|
* corresponding power domains.
|
|
*
|
|
* Note that the work handler function may still be running after this
|
|
* function returns; to ensure that the work handler isn't running use
|
|
* intel_display_power_flush_work_sync() instead.
|
|
*/
|
|
void intel_display_power_flush_work(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
struct intel_power_domain_mask async_put_mask;
|
|
intel_wakeref_t work_wakeref;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
|
|
if (!work_wakeref)
|
|
goto out_verify;
|
|
|
|
async_put_domains_mask(power_domains, &async_put_mask);
|
|
release_async_put_domains(power_domains, &async_put_mask);
|
|
cancel_delayed_work(&power_domains->async_put_work);
|
|
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (work_wakeref)
|
|
intel_runtime_pm_put_raw(&i915->runtime_pm, work_wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work
|
|
* @i915: i915 device instance
|
|
*
|
|
* Like intel_display_power_flush_work(), but also ensure that the work
|
|
* handler function is not running any more when this function returns.
|
|
*/
|
|
static void
|
|
intel_display_power_flush_work_sync(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
|
|
intel_display_power_flush_work(i915);
|
|
cancel_delayed_work_sync(&power_domains->async_put_work);
|
|
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
drm_WARN_ON(&i915->drm, power_domains->async_put_wakeref);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
/**
|
|
* intel_display_power_put - release a power domain reference
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
* @wakeref: wakeref acquired for the reference that is being released
|
|
*
|
|
* This function drops the power domain reference obtained by
|
|
* intel_display_power_get() and might power down the corresponding hardware
|
|
* block right away if this is the last reference.
|
|
*/
|
|
void intel_display_power_put(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain,
|
|
intel_wakeref_t wakeref)
|
|
{
|
|
__intel_display_power_put(dev_priv, domain);
|
|
intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
|
|
}
|
|
#else
|
|
/**
|
|
* intel_display_power_put_unchecked - release an unchecked power domain reference
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
*
|
|
* This function drops the power domain reference obtained by
|
|
* intel_display_power_get() and might power down the corresponding hardware
|
|
* block right away if this is the last reference.
|
|
*
|
|
* This function is only for the power domain code's internal use to suppress wakeref
|
|
* tracking when the correspondig debug kconfig option is disabled, should not
|
|
* be used otherwise.
|
|
*/
|
|
void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
__intel_display_power_put(dev_priv, domain);
|
|
intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
intel_display_power_get_in_set(struct drm_i915_private *i915,
|
|
struct intel_display_power_domain_set *power_domain_set,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
intel_wakeref_t __maybe_unused wf;
|
|
|
|
drm_WARN_ON(&i915->drm, test_bit(domain, power_domain_set->mask.bits));
|
|
|
|
wf = intel_display_power_get(i915, domain);
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
power_domain_set->wakerefs[domain] = wf;
|
|
#endif
|
|
set_bit(domain, power_domain_set->mask.bits);
|
|
}
|
|
|
|
bool
|
|
intel_display_power_get_in_set_if_enabled(struct drm_i915_private *i915,
|
|
struct intel_display_power_domain_set *power_domain_set,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
intel_wakeref_t wf;
|
|
|
|
drm_WARN_ON(&i915->drm, test_bit(domain, power_domain_set->mask.bits));
|
|
|
|
wf = intel_display_power_get_if_enabled(i915, domain);
|
|
if (!wf)
|
|
return false;
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
power_domain_set->wakerefs[domain] = wf;
|
|
#endif
|
|
set_bit(domain, power_domain_set->mask.bits);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
intel_display_power_put_mask_in_set(struct drm_i915_private *i915,
|
|
struct intel_display_power_domain_set *power_domain_set,
|
|
struct intel_power_domain_mask *mask)
|
|
{
|
|
enum intel_display_power_domain domain;
|
|
|
|
drm_WARN_ON(&i915->drm,
|
|
!bitmap_subset(mask->bits, power_domain_set->mask.bits, POWER_DOMAIN_NUM));
|
|
|
|
for_each_power_domain(domain, mask) {
|
|
intel_wakeref_t __maybe_unused wf = -1;
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
wf = fetch_and_zero(&power_domain_set->wakerefs[domain]);
|
|
#endif
|
|
intel_display_power_put(i915, domain, wf);
|
|
clear_bit(domain, power_domain_set->mask.bits);
|
|
}
|
|
}
|
|
|
|
static int
|
|
sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv,
|
|
int disable_power_well)
|
|
{
|
|
if (disable_power_well >= 0)
|
|
return !!disable_power_well;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static u32 get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
|
|
int enable_dc)
|
|
{
|
|
u32 mask;
|
|
int requested_dc;
|
|
int max_dc;
|
|
|
|
if (!HAS_DISPLAY(dev_priv))
|
|
return 0;
|
|
|
|
if (IS_DG2(dev_priv))
|
|
max_dc = 1;
|
|
else if (IS_DG1(dev_priv))
|
|
max_dc = 3;
|
|
else if (DISPLAY_VER(dev_priv) >= 12)
|
|
max_dc = 4;
|
|
else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
|
|
max_dc = 1;
|
|
else if (DISPLAY_VER(dev_priv) >= 9)
|
|
max_dc = 2;
|
|
else
|
|
max_dc = 0;
|
|
|
|
/*
|
|
* DC9 has a separate HW flow from the rest of the DC states,
|
|
* not depending on the DMC firmware. It's needed by system
|
|
* suspend/resume, so allow it unconditionally.
|
|
*/
|
|
mask = IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) ||
|
|
DISPLAY_VER(dev_priv) >= 11 ?
|
|
DC_STATE_EN_DC9 : 0;
|
|
|
|
if (!dev_priv->params.disable_power_well)
|
|
max_dc = 0;
|
|
|
|
if (enable_dc >= 0 && enable_dc <= max_dc) {
|
|
requested_dc = enable_dc;
|
|
} else if (enable_dc == -1) {
|
|
requested_dc = max_dc;
|
|
} else if (enable_dc > max_dc && enable_dc <= 4) {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Adjusting requested max DC state (%d->%d)\n",
|
|
enable_dc, max_dc);
|
|
requested_dc = max_dc;
|
|
} else {
|
|
drm_err(&dev_priv->drm,
|
|
"Unexpected value for enable_dc (%d)\n", enable_dc);
|
|
requested_dc = max_dc;
|
|
}
|
|
|
|
switch (requested_dc) {
|
|
case 4:
|
|
mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6;
|
|
break;
|
|
case 3:
|
|
mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC5;
|
|
break;
|
|
case 2:
|
|
mask |= DC_STATE_EN_UPTO_DC6;
|
|
break;
|
|
case 1:
|
|
mask |= DC_STATE_EN_UPTO_DC5;
|
|
break;
|
|
}
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "Allowed DC state mask %02x\n", mask);
|
|
|
|
return mask;
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_init - initializes the power domain structures
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* Initializes the power domain structures for @dev_priv depending upon the
|
|
* supported platform.
|
|
*/
|
|
int intel_power_domains_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
|
|
dev_priv->params.disable_power_well =
|
|
sanitize_disable_power_well_option(dev_priv,
|
|
dev_priv->params.disable_power_well);
|
|
dev_priv->display.dmc.allowed_dc_mask =
|
|
get_allowed_dc_mask(dev_priv, dev_priv->params.enable_dc);
|
|
|
|
dev_priv->display.dmc.target_dc_state =
|
|
sanitize_target_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
|
|
|
|
mutex_init(&power_domains->lock);
|
|
|
|
INIT_DELAYED_WORK(&power_domains->async_put_work,
|
|
intel_display_power_put_async_work);
|
|
|
|
return intel_display_power_map_init(power_domains);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_cleanup - clean up power domains resources
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* Release any resources acquired by intel_power_domains_init()
|
|
*/
|
|
void intel_power_domains_cleanup(struct drm_i915_private *dev_priv)
|
|
{
|
|
intel_display_power_map_cleanup(&dev_priv->display.power.domains);
|
|
}
|
|
|
|
static void intel_power_domains_sync_hw(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *power_well;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
for_each_power_well(dev_priv, power_well)
|
|
intel_power_well_sync_hw(dev_priv, power_well);
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
static void gen9_dbuf_slice_set(struct drm_i915_private *dev_priv,
|
|
enum dbuf_slice slice, bool enable)
|
|
{
|
|
i915_reg_t reg = DBUF_CTL_S(slice);
|
|
bool state;
|
|
|
|
intel_de_rmw(dev_priv, reg, DBUF_POWER_REQUEST,
|
|
enable ? DBUF_POWER_REQUEST : 0);
|
|
intel_de_posting_read(dev_priv, reg);
|
|
udelay(10);
|
|
|
|
state = intel_de_read(dev_priv, reg) & DBUF_POWER_STATE;
|
|
drm_WARN(&dev_priv->drm, enable != state,
|
|
"DBuf slice %d power %s timeout!\n",
|
|
slice, str_enable_disable(enable));
|
|
}
|
|
|
|
void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,
|
|
u8 req_slices)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
u8 slice_mask = INTEL_INFO(dev_priv)->display.dbuf.slice_mask;
|
|
enum dbuf_slice slice;
|
|
|
|
drm_WARN(&dev_priv->drm, req_slices & ~slice_mask,
|
|
"Invalid set of dbuf slices (0x%x) requested (total dbuf slices 0x%x)\n",
|
|
req_slices, slice_mask);
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "Updating dbuf slices to 0x%x\n",
|
|
req_slices);
|
|
|
|
/*
|
|
* Might be running this in parallel to gen9_dc_off_power_well_enable
|
|
* being called from intel_dp_detect for instance,
|
|
* which causes assertion triggered by race condition,
|
|
* as gen9_assert_dbuf_enabled might preempt this when registers
|
|
* were already updated, while dev_priv was not.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
for_each_dbuf_slice(dev_priv, slice)
|
|
gen9_dbuf_slice_set(dev_priv, slice, req_slices & BIT(slice));
|
|
|
|
dev_priv->display.dbuf.enabled_slices = req_slices;
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
static void gen9_dbuf_enable(struct drm_i915_private *dev_priv)
|
|
{
|
|
dev_priv->display.dbuf.enabled_slices =
|
|
intel_enabled_dbuf_slices_mask(dev_priv);
|
|
|
|
/*
|
|
* Just power up at least 1 slice, we will
|
|
* figure out later which slices we have and what we need.
|
|
*/
|
|
gen9_dbuf_slices_update(dev_priv, BIT(DBUF_S1) |
|
|
dev_priv->display.dbuf.enabled_slices);
|
|
}
|
|
|
|
static void gen9_dbuf_disable(struct drm_i915_private *dev_priv)
|
|
{
|
|
gen9_dbuf_slices_update(dev_priv, 0);
|
|
}
|
|
|
|
static void gen12_dbuf_slices_config(struct drm_i915_private *dev_priv)
|
|
{
|
|
enum dbuf_slice slice;
|
|
|
|
if (IS_ALDERLAKE_P(dev_priv))
|
|
return;
|
|
|
|
for_each_dbuf_slice(dev_priv, slice)
|
|
intel_de_rmw(dev_priv, DBUF_CTL_S(slice),
|
|
DBUF_TRACKER_STATE_SERVICE_MASK,
|
|
DBUF_TRACKER_STATE_SERVICE(8));
|
|
}
|
|
|
|
static void icl_mbus_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
unsigned long abox_regs = INTEL_INFO(dev_priv)->display.abox_mask;
|
|
u32 mask, val, i;
|
|
|
|
if (IS_ALDERLAKE_P(dev_priv) || DISPLAY_VER(dev_priv) >= 14)
|
|
return;
|
|
|
|
mask = MBUS_ABOX_BT_CREDIT_POOL1_MASK |
|
|
MBUS_ABOX_BT_CREDIT_POOL2_MASK |
|
|
MBUS_ABOX_B_CREDIT_MASK |
|
|
MBUS_ABOX_BW_CREDIT_MASK;
|
|
val = MBUS_ABOX_BT_CREDIT_POOL1(16) |
|
|
MBUS_ABOX_BT_CREDIT_POOL2(16) |
|
|
MBUS_ABOX_B_CREDIT(1) |
|
|
MBUS_ABOX_BW_CREDIT(1);
|
|
|
|
/*
|
|
* gen12 platforms that use abox1 and abox2 for pixel data reads still
|
|
* expect us to program the abox_ctl0 register as well, even though
|
|
* we don't have to program other instance-0 registers like BW_BUDDY.
|
|
*/
|
|
if (DISPLAY_VER(dev_priv) == 12)
|
|
abox_regs |= BIT(0);
|
|
|
|
for_each_set_bit(i, &abox_regs, sizeof(abox_regs))
|
|
intel_de_rmw(dev_priv, MBUS_ABOX_CTL(i), mask, val);
|
|
}
|
|
|
|
static void hsw_assert_cdclk(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val = intel_de_read(dev_priv, LCPLL_CTL);
|
|
|
|
/*
|
|
* The LCPLL register should be turned on by the BIOS. For now
|
|
* let's just check its state and print errors in case
|
|
* something is wrong. Don't even try to turn it on.
|
|
*/
|
|
|
|
if (val & LCPLL_CD_SOURCE_FCLK)
|
|
drm_err(&dev_priv->drm, "CDCLK source is not LCPLL\n");
|
|
|
|
if (val & LCPLL_PLL_DISABLE)
|
|
drm_err(&dev_priv->drm, "LCPLL is disabled\n");
|
|
|
|
if ((val & LCPLL_REF_MASK) != LCPLL_REF_NON_SSC)
|
|
drm_err(&dev_priv->drm, "LCPLL not using non-SSC reference\n");
|
|
}
|
|
|
|
static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_crtc *crtc;
|
|
|
|
for_each_intel_crtc(&dev_priv->drm, crtc)
|
|
I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
|
|
pipe_name(crtc->pipe));
|
|
|
|
I915_STATE_WARN(intel_de_read(dev_priv, HSW_PWR_WELL_CTL2),
|
|
"Display power well on\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, SPLL_CTL) & SPLL_PLL_ENABLE,
|
|
"SPLL enabled\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(0)) & WRPLL_PLL_ENABLE,
|
|
"WRPLL1 enabled\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(1)) & WRPLL_PLL_ENABLE,
|
|
"WRPLL2 enabled\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, PP_STATUS(0)) & PP_ON,
|
|
"Panel power on\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
|
|
"CPU PWM1 enabled\n");
|
|
if (IS_HASWELL(dev_priv))
|
|
I915_STATE_WARN(intel_de_read(dev_priv, HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
|
|
"CPU PWM2 enabled\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
|
|
"PCH PWM1 enabled\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
|
|
"Utility pin enabled\n");
|
|
I915_STATE_WARN(intel_de_read(dev_priv, PCH_GTC_CTL) & PCH_GTC_ENABLE,
|
|
"PCH GTC enabled\n");
|
|
|
|
/*
|
|
* In theory we can still leave IRQs enabled, as long as only the HPD
|
|
* interrupts remain enabled. We used to check for that, but since it's
|
|
* gen-specific and since we only disable LCPLL after we fully disable
|
|
* the interrupts, the check below should be enough.
|
|
*/
|
|
I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
|
|
}
|
|
|
|
static u32 hsw_read_dcomp(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (IS_HASWELL(dev_priv))
|
|
return intel_de_read(dev_priv, D_COMP_HSW);
|
|
else
|
|
return intel_de_read(dev_priv, D_COMP_BDW);
|
|
}
|
|
|
|
static void hsw_write_dcomp(struct drm_i915_private *dev_priv, u32 val)
|
|
{
|
|
if (IS_HASWELL(dev_priv)) {
|
|
if (snb_pcode_write(&dev_priv->uncore, GEN6_PCODE_WRITE_D_COMP, val))
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Failed to write to D_COMP\n");
|
|
} else {
|
|
intel_de_write(dev_priv, D_COMP_BDW, val);
|
|
intel_de_posting_read(dev_priv, D_COMP_BDW);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function implements pieces of two sequences from BSpec:
|
|
* - Sequence for display software to disable LCPLL
|
|
* - Sequence for display software to allow package C8+
|
|
* The steps implemented here are just the steps that actually touch the LCPLL
|
|
* register. Callers should take care of disabling all the display engine
|
|
* functions, doing the mode unset, fixing interrupts, etc.
|
|
*/
|
|
static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
|
|
bool switch_to_fclk, bool allow_power_down)
|
|
{
|
|
u32 val;
|
|
|
|
assert_can_disable_lcpll(dev_priv);
|
|
|
|
val = intel_de_read(dev_priv, LCPLL_CTL);
|
|
|
|
if (switch_to_fclk) {
|
|
val |= LCPLL_CD_SOURCE_FCLK;
|
|
intel_de_write(dev_priv, LCPLL_CTL, val);
|
|
|
|
if (wait_for_us(intel_de_read(dev_priv, LCPLL_CTL) &
|
|
LCPLL_CD_SOURCE_FCLK_DONE, 1))
|
|
drm_err(&dev_priv->drm, "Switching to FCLK failed\n");
|
|
|
|
val = intel_de_read(dev_priv, LCPLL_CTL);
|
|
}
|
|
|
|
val |= LCPLL_PLL_DISABLE;
|
|
intel_de_write(dev_priv, LCPLL_CTL, val);
|
|
intel_de_posting_read(dev_priv, LCPLL_CTL);
|
|
|
|
if (intel_de_wait_for_clear(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 1))
|
|
drm_err(&dev_priv->drm, "LCPLL still locked\n");
|
|
|
|
val = hsw_read_dcomp(dev_priv);
|
|
val |= D_COMP_COMP_DISABLE;
|
|
hsw_write_dcomp(dev_priv, val);
|
|
ndelay(100);
|
|
|
|
if (wait_for((hsw_read_dcomp(dev_priv) &
|
|
D_COMP_RCOMP_IN_PROGRESS) == 0, 1))
|
|
drm_err(&dev_priv->drm, "D_COMP RCOMP still in progress\n");
|
|
|
|
if (allow_power_down) {
|
|
val = intel_de_read(dev_priv, LCPLL_CTL);
|
|
val |= LCPLL_POWER_DOWN_ALLOW;
|
|
intel_de_write(dev_priv, LCPLL_CTL, val);
|
|
intel_de_posting_read(dev_priv, LCPLL_CTL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Fully restores LCPLL, disallowing power down and switching back to LCPLL
|
|
* source.
|
|
*/
|
|
static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
val = intel_de_read(dev_priv, LCPLL_CTL);
|
|
|
|
if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
|
|
LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
|
|
return;
|
|
|
|
/*
|
|
* Make sure we're not on PC8 state before disabling PC8, otherwise
|
|
* we'll hang the machine. To prevent PC8 state, just enable force_wake.
|
|
*/
|
|
intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
|
|
|
|
if (val & LCPLL_POWER_DOWN_ALLOW) {
|
|
val &= ~LCPLL_POWER_DOWN_ALLOW;
|
|
intel_de_write(dev_priv, LCPLL_CTL, val);
|
|
intel_de_posting_read(dev_priv, LCPLL_CTL);
|
|
}
|
|
|
|
val = hsw_read_dcomp(dev_priv);
|
|
val |= D_COMP_COMP_FORCE;
|
|
val &= ~D_COMP_COMP_DISABLE;
|
|
hsw_write_dcomp(dev_priv, val);
|
|
|
|
val = intel_de_read(dev_priv, LCPLL_CTL);
|
|
val &= ~LCPLL_PLL_DISABLE;
|
|
intel_de_write(dev_priv, LCPLL_CTL, val);
|
|
|
|
if (intel_de_wait_for_set(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 5))
|
|
drm_err(&dev_priv->drm, "LCPLL not locked yet\n");
|
|
|
|
if (val & LCPLL_CD_SOURCE_FCLK) {
|
|
val = intel_de_read(dev_priv, LCPLL_CTL);
|
|
val &= ~LCPLL_CD_SOURCE_FCLK;
|
|
intel_de_write(dev_priv, LCPLL_CTL, val);
|
|
|
|
if (wait_for_us((intel_de_read(dev_priv, LCPLL_CTL) &
|
|
LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
|
|
drm_err(&dev_priv->drm,
|
|
"Switching back to LCPLL failed\n");
|
|
}
|
|
|
|
intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
|
|
|
|
intel_update_cdclk(dev_priv);
|
|
intel_cdclk_dump_config(dev_priv, &dev_priv->display.cdclk.hw, "Current CDCLK");
|
|
}
|
|
|
|
/*
|
|
* Package states C8 and deeper are really deep PC states that can only be
|
|
* reached when all the devices on the system allow it, so even if the graphics
|
|
* device allows PC8+, it doesn't mean the system will actually get to these
|
|
* states. Our driver only allows PC8+ when going into runtime PM.
|
|
*
|
|
* The requirements for PC8+ are that all the outputs are disabled, the power
|
|
* well is disabled and most interrupts are disabled, and these are also
|
|
* requirements for runtime PM. When these conditions are met, we manually do
|
|
* the other conditions: disable the interrupts, clocks and switch LCPLL refclk
|
|
* to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
|
|
* hang the machine.
|
|
*
|
|
* When we really reach PC8 or deeper states (not just when we allow it) we lose
|
|
* the state of some registers, so when we come back from PC8+ we need to
|
|
* restore this state. We don't get into PC8+ if we're not in RC6, so we don't
|
|
* need to take care of the registers kept by RC6. Notice that this happens even
|
|
* if we don't put the device in PCI D3 state (which is what currently happens
|
|
* because of the runtime PM support).
|
|
*
|
|
* For more, read "Display Sequences for Package C8" on the hardware
|
|
* documentation.
|
|
*/
|
|
static void hsw_enable_pc8(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "Enabling package C8+\n");
|
|
|
|
if (HAS_PCH_LPT_LP(dev_priv)) {
|
|
val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D);
|
|
val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
|
|
intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val);
|
|
}
|
|
|
|
lpt_disable_clkout_dp(dev_priv);
|
|
hsw_disable_lcpll(dev_priv, true, true);
|
|
}
|
|
|
|
static void hsw_disable_pc8(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "Disabling package C8+\n");
|
|
|
|
hsw_restore_lcpll(dev_priv);
|
|
intel_init_pch_refclk(dev_priv);
|
|
|
|
if (HAS_PCH_LPT_LP(dev_priv)) {
|
|
val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D);
|
|
val |= PCH_LP_PARTITION_LEVEL_DISABLE;
|
|
intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val);
|
|
}
|
|
}
|
|
|
|
static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv,
|
|
bool enable)
|
|
{
|
|
i915_reg_t reg;
|
|
u32 reset_bits, val;
|
|
|
|
if (IS_IVYBRIDGE(dev_priv)) {
|
|
reg = GEN7_MSG_CTL;
|
|
reset_bits = WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK;
|
|
} else {
|
|
reg = HSW_NDE_RSTWRN_OPT;
|
|
reset_bits = RESET_PCH_HANDSHAKE_ENABLE;
|
|
}
|
|
|
|
if (DISPLAY_VER(dev_priv) >= 14)
|
|
reset_bits |= MTL_RESET_PICA_HANDSHAKE_EN;
|
|
|
|
val = intel_de_read(dev_priv, reg);
|
|
|
|
if (enable)
|
|
val |= reset_bits;
|
|
else
|
|
val &= ~reset_bits;
|
|
|
|
intel_de_write(dev_priv, reg, val);
|
|
}
|
|
|
|
static void skl_display_core_init(struct drm_i915_private *dev_priv,
|
|
bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/* enable PCH reset handshake */
|
|
intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
|
|
|
|
if (!HAS_DISPLAY(dev_priv))
|
|
return;
|
|
|
|
/* enable PG1 and Misc I/O */
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_enable(dev_priv, well);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_MISC_IO);
|
|
intel_power_well_enable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
intel_cdclk_init_hw(dev_priv);
|
|
|
|
gen9_dbuf_enable(dev_priv);
|
|
|
|
if (resume)
|
|
intel_dmc_load_program(dev_priv);
|
|
}
|
|
|
|
static void skl_display_core_uninit(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *well;
|
|
|
|
if (!HAS_DISPLAY(dev_priv))
|
|
return;
|
|
|
|
gen9_disable_dc_states(dev_priv);
|
|
/* TODO: disable DMC program */
|
|
|
|
gen9_dbuf_disable(dev_priv);
|
|
|
|
intel_cdclk_uninit_hw(dev_priv);
|
|
|
|
/* The spec doesn't call for removing the reset handshake flag */
|
|
/* disable PG1 and Misc I/O */
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
/*
|
|
* BSpec says to keep the MISC IO power well enabled here, only
|
|
* remove our request for power well 1.
|
|
* Note that even though the driver's request is removed power well 1
|
|
* may stay enabled after this due to DMC's own request on it.
|
|
*/
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_disable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
usleep_range(10, 30); /* 10 us delay per Bspec */
|
|
}
|
|
|
|
static void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/*
|
|
* NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
|
|
* or else the reset will hang because there is no PCH to respond.
|
|
* Move the handshake programming to initialization sequence.
|
|
* Previously was left up to BIOS.
|
|
*/
|
|
intel_pch_reset_handshake(dev_priv, false);
|
|
|
|
if (!HAS_DISPLAY(dev_priv))
|
|
return;
|
|
|
|
/* Enable PG1 */
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_enable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
intel_cdclk_init_hw(dev_priv);
|
|
|
|
gen9_dbuf_enable(dev_priv);
|
|
|
|
if (resume)
|
|
intel_dmc_load_program(dev_priv);
|
|
}
|
|
|
|
static void bxt_display_core_uninit(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *well;
|
|
|
|
if (!HAS_DISPLAY(dev_priv))
|
|
return;
|
|
|
|
gen9_disable_dc_states(dev_priv);
|
|
/* TODO: disable DMC program */
|
|
|
|
gen9_dbuf_disable(dev_priv);
|
|
|
|
intel_cdclk_uninit_hw(dev_priv);
|
|
|
|
/* The spec doesn't call for removing the reset handshake flag */
|
|
|
|
/*
|
|
* Disable PW1 (PG1).
|
|
* Note that even though the driver's request is removed power well 1
|
|
* may stay enabled after this due to DMC's own request on it.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_disable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
usleep_range(10, 30); /* 10 us delay per Bspec */
|
|
}
|
|
|
|
struct buddy_page_mask {
|
|
u32 page_mask;
|
|
u8 type;
|
|
u8 num_channels;
|
|
};
|
|
|
|
static const struct buddy_page_mask tgl_buddy_page_masks[] = {
|
|
{ .num_channels = 1, .type = INTEL_DRAM_DDR4, .page_mask = 0xF },
|
|
{ .num_channels = 1, .type = INTEL_DRAM_DDR5, .page_mask = 0xF },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1C },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x1C },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_DDR4, .page_mask = 0x1F },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_DDR5, .page_mask = 0x1E },
|
|
{ .num_channels = 4, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x38 },
|
|
{ .num_channels = 4, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x38 },
|
|
{}
|
|
};
|
|
|
|
static const struct buddy_page_mask wa_1409767108_buddy_page_masks[] = {
|
|
{ .num_channels = 1, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1 },
|
|
{ .num_channels = 1, .type = INTEL_DRAM_DDR4, .page_mask = 0x1 },
|
|
{ .num_channels = 1, .type = INTEL_DRAM_DDR5, .page_mask = 0x1 },
|
|
{ .num_channels = 1, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x1 },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x3 },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_DDR4, .page_mask = 0x3 },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_DDR5, .page_mask = 0x3 },
|
|
{ .num_channels = 2, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x3 },
|
|
{}
|
|
};
|
|
|
|
static void tgl_bw_buddy_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
enum intel_dram_type type = dev_priv->dram_info.type;
|
|
u8 num_channels = dev_priv->dram_info.num_channels;
|
|
const struct buddy_page_mask *table;
|
|
unsigned long abox_mask = INTEL_INFO(dev_priv)->display.abox_mask;
|
|
int config, i;
|
|
|
|
/* BW_BUDDY registers are not used on dgpu's beyond DG1 */
|
|
if (IS_DGFX(dev_priv) && !IS_DG1(dev_priv))
|
|
return;
|
|
|
|
if (IS_ALDERLAKE_S(dev_priv) ||
|
|
IS_DG1_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
|
|
IS_RKL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
|
|
IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_C0))
|
|
/* Wa_1409767108:tgl,dg1,adl-s */
|
|
table = wa_1409767108_buddy_page_masks;
|
|
else
|
|
table = tgl_buddy_page_masks;
|
|
|
|
for (config = 0; table[config].page_mask != 0; config++)
|
|
if (table[config].num_channels == num_channels &&
|
|
table[config].type == type)
|
|
break;
|
|
|
|
if (table[config].page_mask == 0) {
|
|
drm_dbg(&dev_priv->drm,
|
|
"Unknown memory configuration; disabling address buddy logic.\n");
|
|
for_each_set_bit(i, &abox_mask, sizeof(abox_mask))
|
|
intel_de_write(dev_priv, BW_BUDDY_CTL(i),
|
|
BW_BUDDY_DISABLE);
|
|
} else {
|
|
for_each_set_bit(i, &abox_mask, sizeof(abox_mask)) {
|
|
intel_de_write(dev_priv, BW_BUDDY_PAGE_MASK(i),
|
|
table[config].page_mask);
|
|
|
|
/* Wa_22010178259:tgl,dg1,rkl,adl-s */
|
|
if (DISPLAY_VER(dev_priv) == 12)
|
|
intel_de_rmw(dev_priv, BW_BUDDY_CTL(i),
|
|
BW_BUDDY_TLB_REQ_TIMER_MASK,
|
|
BW_BUDDY_TLB_REQ_TIMER(0x8));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void icl_display_core_init(struct drm_i915_private *dev_priv,
|
|
bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *well;
|
|
u32 val;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/* Wa_14011294188:ehl,jsl,tgl,rkl,adl-s */
|
|
if (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP &&
|
|
INTEL_PCH_TYPE(dev_priv) < PCH_DG1)
|
|
intel_de_rmw(dev_priv, SOUTH_DSPCLK_GATE_D, 0,
|
|
PCH_DPMGUNIT_CLOCK_GATE_DISABLE);
|
|
|
|
/* 1. Enable PCH reset handshake. */
|
|
intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
|
|
|
|
if (!HAS_DISPLAY(dev_priv))
|
|
return;
|
|
|
|
/* 2. Initialize all combo phys */
|
|
intel_combo_phy_init(dev_priv);
|
|
|
|
/*
|
|
* 3. Enable Power Well 1 (PG1).
|
|
* The AUX IO power wells will be enabled on demand.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_enable(dev_priv, well);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
/* 4. Enable CDCLK. */
|
|
intel_cdclk_init_hw(dev_priv);
|
|
|
|
if (DISPLAY_VER(dev_priv) >= 12)
|
|
gen12_dbuf_slices_config(dev_priv);
|
|
|
|
/* 5. Enable DBUF. */
|
|
gen9_dbuf_enable(dev_priv);
|
|
|
|
/* 6. Setup MBUS. */
|
|
icl_mbus_init(dev_priv);
|
|
|
|
/* 7. Program arbiter BW_BUDDY registers */
|
|
if (DISPLAY_VER(dev_priv) >= 12)
|
|
tgl_bw_buddy_init(dev_priv);
|
|
|
|
/* 8. Ensure PHYs have completed calibration and adaptation */
|
|
if (IS_DG2(dev_priv))
|
|
intel_snps_phy_wait_for_calibration(dev_priv);
|
|
|
|
if (resume)
|
|
intel_dmc_load_program(dev_priv);
|
|
|
|
/* Wa_14011508470:tgl,dg1,rkl,adl-s,adl-p */
|
|
if (DISPLAY_VER(dev_priv) >= 12) {
|
|
val = DCPR_CLEAR_MEMSTAT_DIS | DCPR_SEND_RESP_IMM |
|
|
DCPR_MASK_LPMODE | DCPR_MASK_MAXLATENCY_MEMUP_CLR;
|
|
intel_de_rmw(dev_priv, GEN11_CHICKEN_DCPR_2, 0, val);
|
|
}
|
|
|
|
/* Wa_14011503030:xelpd */
|
|
if (DISPLAY_VER(dev_priv) >= 13)
|
|
intel_de_write(dev_priv, XELPD_DISPLAY_ERR_FATAL_MASK, ~0);
|
|
}
|
|
|
|
static void icl_display_core_uninit(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
|
|
struct i915_power_well *well;
|
|
|
|
if (!HAS_DISPLAY(dev_priv))
|
|
return;
|
|
|
|
gen9_disable_dc_states(dev_priv);
|
|
intel_dmc_disable_program(dev_priv);
|
|
|
|
/* 1. Disable all display engine functions -> aready done */
|
|
|
|
/* 2. Disable DBUF */
|
|
gen9_dbuf_disable(dev_priv);
|
|
|
|
/* 3. Disable CD clock */
|
|
intel_cdclk_uninit_hw(dev_priv);
|
|
|
|
/*
|
|
* 4. Disable Power Well 1 (PG1).
|
|
* The AUX IO power wells are toggled on demand, so they are already
|
|
* disabled at this point.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_disable(dev_priv, well);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
/* 5. */
|
|
intel_combo_phy_uninit(dev_priv);
|
|
}
|
|
|
|
static void chv_phy_control_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_well *cmn_bc =
|
|
lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
|
|
struct i915_power_well *cmn_d =
|
|
lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
|
|
|
|
/*
|
|
* DISPLAY_PHY_CONTROL can get corrupted if read. As a
|
|
* workaround never ever read DISPLAY_PHY_CONTROL, and
|
|
* instead maintain a shadow copy ourselves. Use the actual
|
|
* power well state and lane status to reconstruct the
|
|
* expected initial value.
|
|
*/
|
|
dev_priv->display.power.chv_phy_control =
|
|
PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY0) |
|
|
PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY1) |
|
|
PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH0) |
|
|
PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH1) |
|
|
PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY1, DPIO_CH0);
|
|
|
|
/*
|
|
* If all lanes are disabled we leave the override disabled
|
|
* with all power down bits cleared to match the state we
|
|
* would use after disabling the port. Otherwise enable the
|
|
* override and set the lane powerdown bits accding to the
|
|
* current lane status.
|
|
*/
|
|
if (intel_power_well_is_enabled(dev_priv, cmn_bc)) {
|
|
u32 status = intel_de_read(dev_priv, DPLL(PIPE_A));
|
|
unsigned int mask;
|
|
|
|
mask = status & DPLL_PORTB_READY_MASK;
|
|
if (mask == 0xf)
|
|
mask = 0x0;
|
|
else
|
|
dev_priv->display.power.chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0);
|
|
|
|
dev_priv->display.power.chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH0);
|
|
|
|
mask = (status & DPLL_PORTC_READY_MASK) >> 4;
|
|
if (mask == 0xf)
|
|
mask = 0x0;
|
|
else
|
|
dev_priv->display.power.chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1);
|
|
|
|
dev_priv->display.power.chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH1);
|
|
|
|
dev_priv->display.power.chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY0);
|
|
|
|
dev_priv->display.power.chv_phy_assert[DPIO_PHY0] = false;
|
|
} else {
|
|
dev_priv->display.power.chv_phy_assert[DPIO_PHY0] = true;
|
|
}
|
|
|
|
if (intel_power_well_is_enabled(dev_priv, cmn_d)) {
|
|
u32 status = intel_de_read(dev_priv, DPIO_PHY_STATUS);
|
|
unsigned int mask;
|
|
|
|
mask = status & DPLL_PORTD_READY_MASK;
|
|
|
|
if (mask == 0xf)
|
|
mask = 0x0;
|
|
else
|
|
dev_priv->display.power.chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0);
|
|
|
|
dev_priv->display.power.chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY1, DPIO_CH0);
|
|
|
|
dev_priv->display.power.chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY1);
|
|
|
|
dev_priv->display.power.chv_phy_assert[DPIO_PHY1] = false;
|
|
} else {
|
|
dev_priv->display.power.chv_phy_assert[DPIO_PHY1] = true;
|
|
}
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "Initial PHY_CONTROL=0x%08x\n",
|
|
dev_priv->display.power.chv_phy_control);
|
|
|
|
/* Defer application of initial phy_control to enabling the powerwell */
|
|
}
|
|
|
|
static void vlv_cmnlane_wa(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_well *cmn =
|
|
lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
|
|
struct i915_power_well *disp2d =
|
|
lookup_power_well(dev_priv, VLV_DISP_PW_DISP2D);
|
|
|
|
/* If the display might be already active skip this */
|
|
if (intel_power_well_is_enabled(dev_priv, cmn) &&
|
|
intel_power_well_is_enabled(dev_priv, disp2d) &&
|
|
intel_de_read(dev_priv, DPIO_CTL) & DPIO_CMNRST)
|
|
return;
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "toggling display PHY side reset\n");
|
|
|
|
/* cmnlane needs DPLL registers */
|
|
intel_power_well_enable(dev_priv, disp2d);
|
|
|
|
/*
|
|
* From VLV2A0_DP_eDP_HDMI_DPIO_driver_vbios_notes_11.docx:
|
|
* Need to assert and de-assert PHY SB reset by gating the
|
|
* common lane power, then un-gating it.
|
|
* Simply ungating isn't enough to reset the PHY enough to get
|
|
* ports and lanes running.
|
|
*/
|
|
intel_power_well_disable(dev_priv, cmn);
|
|
}
|
|
|
|
static bool vlv_punit_is_power_gated(struct drm_i915_private *dev_priv, u32 reg0)
|
|
{
|
|
bool ret;
|
|
|
|
vlv_punit_get(dev_priv);
|
|
ret = (vlv_punit_read(dev_priv, reg0) & SSPM0_SSC_MASK) == SSPM0_SSC_PWR_GATE;
|
|
vlv_punit_put(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void assert_ved_power_gated(struct drm_i915_private *dev_priv)
|
|
{
|
|
drm_WARN(&dev_priv->drm,
|
|
!vlv_punit_is_power_gated(dev_priv, PUNIT_REG_VEDSSPM0),
|
|
"VED not power gated\n");
|
|
}
|
|
|
|
static void assert_isp_power_gated(struct drm_i915_private *dev_priv)
|
|
{
|
|
static const struct pci_device_id isp_ids[] = {
|
|
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0f38)},
|
|
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x22b8)},
|
|
{}
|
|
};
|
|
|
|
drm_WARN(&dev_priv->drm, !pci_dev_present(isp_ids) &&
|
|
!vlv_punit_is_power_gated(dev_priv, PUNIT_REG_ISPSSPM0),
|
|
"ISP not power gated\n");
|
|
}
|
|
|
|
static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv);
|
|
|
|
/**
|
|
* intel_power_domains_init_hw - initialize hardware power domain state
|
|
* @i915: i915 device instance
|
|
* @resume: Called from resume code paths or not
|
|
*
|
|
* This function initializes the hardware power domain state and enables all
|
|
* power wells belonging to the INIT power domain. Power wells in other
|
|
* domains (and not in the INIT domain) are referenced or disabled by
|
|
* intel_modeset_readout_hw_state(). After that the reference count of each
|
|
* power well must match its HW enabled state, see
|
|
* intel_power_domains_verify_state().
|
|
*
|
|
* It will return with power domains disabled (to be enabled later by
|
|
* intel_power_domains_enable()) and must be paired with
|
|
* intel_power_domains_driver_remove().
|
|
*/
|
|
void intel_power_domains_init_hw(struct drm_i915_private *i915, bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
|
|
power_domains->initializing = true;
|
|
|
|
if (DISPLAY_VER(i915) >= 11) {
|
|
icl_display_core_init(i915, resume);
|
|
} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
|
|
bxt_display_core_init(i915, resume);
|
|
} else if (DISPLAY_VER(i915) == 9) {
|
|
skl_display_core_init(i915, resume);
|
|
} else if (IS_CHERRYVIEW(i915)) {
|
|
mutex_lock(&power_domains->lock);
|
|
chv_phy_control_init(i915);
|
|
mutex_unlock(&power_domains->lock);
|
|
assert_isp_power_gated(i915);
|
|
} else if (IS_VALLEYVIEW(i915)) {
|
|
mutex_lock(&power_domains->lock);
|
|
vlv_cmnlane_wa(i915);
|
|
mutex_unlock(&power_domains->lock);
|
|
assert_ved_power_gated(i915);
|
|
assert_isp_power_gated(i915);
|
|
} else if (IS_BROADWELL(i915) || IS_HASWELL(i915)) {
|
|
hsw_assert_cdclk(i915);
|
|
intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
|
|
} else if (IS_IVYBRIDGE(i915)) {
|
|
intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
|
|
}
|
|
|
|
/*
|
|
* Keep all power wells enabled for any dependent HW access during
|
|
* initialization and to make sure we keep BIOS enabled display HW
|
|
* resources powered until display HW readout is complete. We drop
|
|
* this reference in intel_power_domains_enable().
|
|
*/
|
|
drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
|
|
power_domains->init_wakeref =
|
|
intel_display_power_get(i915, POWER_DOMAIN_INIT);
|
|
|
|
/* Disable power support if the user asked so. */
|
|
if (!i915->params.disable_power_well) {
|
|
drm_WARN_ON(&i915->drm, power_domains->disable_wakeref);
|
|
i915->display.power.domains.disable_wakeref = intel_display_power_get(i915,
|
|
POWER_DOMAIN_INIT);
|
|
}
|
|
intel_power_domains_sync_hw(i915);
|
|
|
|
power_domains->initializing = false;
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_driver_remove - deinitialize hw power domain state
|
|
* @i915: i915 device instance
|
|
*
|
|
* De-initializes the display power domain HW state. It also ensures that the
|
|
* device stays powered up so that the driver can be reloaded.
|
|
*
|
|
* It must be called with power domains already disabled (after a call to
|
|
* intel_power_domains_disable()) and must be paired with
|
|
* intel_power_domains_init_hw().
|
|
*/
|
|
void intel_power_domains_driver_remove(struct drm_i915_private *i915)
|
|
{
|
|
intel_wakeref_t wakeref __maybe_unused =
|
|
fetch_and_zero(&i915->display.power.domains.init_wakeref);
|
|
|
|
/* Remove the refcount we took to keep power well support disabled. */
|
|
if (!i915->params.disable_power_well)
|
|
intel_display_power_put(i915, POWER_DOMAIN_INIT,
|
|
fetch_and_zero(&i915->display.power.domains.disable_wakeref));
|
|
|
|
intel_display_power_flush_work_sync(i915);
|
|
|
|
intel_power_domains_verify_state(i915);
|
|
|
|
/* Keep the power well enabled, but cancel its rpm wakeref. */
|
|
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_sanitize_state - sanitize power domains state
|
|
* @i915: i915 device instance
|
|
*
|
|
* Sanitize the power domains state during driver loading and system resume.
|
|
* The function will disable all display power wells that BIOS has enabled
|
|
* without a user for it (any user for a power well has taken a reference
|
|
* on it by the time this function is called, after the state of all the
|
|
* pipe, encoder, etc. HW resources have been sanitized).
|
|
*/
|
|
void intel_power_domains_sanitize_state(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
struct i915_power_well *power_well;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
for_each_power_well_reverse(i915, power_well) {
|
|
if (power_well->desc->always_on || power_well->count ||
|
|
!intel_power_well_is_enabled(i915, power_well))
|
|
continue;
|
|
|
|
drm_dbg_kms(&i915->drm,
|
|
"BIOS left unused %s power well enabled, disabling it\n",
|
|
intel_power_well_name(power_well));
|
|
intel_power_well_disable(i915, power_well);
|
|
}
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_enable - enable toggling of display power wells
|
|
* @i915: i915 device instance
|
|
*
|
|
* Enable the ondemand enabling/disabling of the display power wells. Note that
|
|
* power wells not belonging to POWER_DOMAIN_INIT are allowed to be toggled
|
|
* only at specific points of the display modeset sequence, thus they are not
|
|
* affected by the intel_power_domains_enable()/disable() calls. The purpose
|
|
* of these function is to keep the rest of power wells enabled until the end
|
|
* of display HW readout (which will acquire the power references reflecting
|
|
* the current HW state).
|
|
*/
|
|
void intel_power_domains_enable(struct drm_i915_private *i915)
|
|
{
|
|
intel_wakeref_t wakeref __maybe_unused =
|
|
fetch_and_zero(&i915->display.power.domains.init_wakeref);
|
|
|
|
intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
|
|
intel_power_domains_verify_state(i915);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_disable - disable toggling of display power wells
|
|
* @i915: i915 device instance
|
|
*
|
|
* Disable the ondemand enabling/disabling of the display power wells. See
|
|
* intel_power_domains_enable() for which power wells this call controls.
|
|
*/
|
|
void intel_power_domains_disable(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
|
|
drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
|
|
power_domains->init_wakeref =
|
|
intel_display_power_get(i915, POWER_DOMAIN_INIT);
|
|
|
|
intel_power_domains_verify_state(i915);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_suspend - suspend power domain state
|
|
* @i915: i915 device instance
|
|
* @suspend_mode: specifies the target suspend state (idle, mem, hibernation)
|
|
*
|
|
* This function prepares the hardware power domain state before entering
|
|
* system suspend.
|
|
*
|
|
* It must be called with power domains already disabled (after a call to
|
|
* intel_power_domains_disable()) and paired with intel_power_domains_resume().
|
|
*/
|
|
void intel_power_domains_suspend(struct drm_i915_private *i915,
|
|
enum i915_drm_suspend_mode suspend_mode)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
intel_wakeref_t wakeref __maybe_unused =
|
|
fetch_and_zero(&power_domains->init_wakeref);
|
|
|
|
intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
|
|
|
|
/*
|
|
* In case of suspend-to-idle (aka S0ix) on a DMC platform without DC9
|
|
* support don't manually deinit the power domains. This also means the
|
|
* DMC firmware will stay active, it will power down any HW
|
|
* resources as required and also enable deeper system power states
|
|
* that would be blocked if the firmware was inactive.
|
|
*/
|
|
if (!(i915->display.dmc.allowed_dc_mask & DC_STATE_EN_DC9) &&
|
|
suspend_mode == I915_DRM_SUSPEND_IDLE &&
|
|
intel_dmc_has_payload(i915)) {
|
|
intel_display_power_flush_work(i915);
|
|
intel_power_domains_verify_state(i915);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Even if power well support was disabled we still want to disable
|
|
* power wells if power domains must be deinitialized for suspend.
|
|
*/
|
|
if (!i915->params.disable_power_well)
|
|
intel_display_power_put(i915, POWER_DOMAIN_INIT,
|
|
fetch_and_zero(&i915->display.power.domains.disable_wakeref));
|
|
|
|
intel_display_power_flush_work(i915);
|
|
intel_power_domains_verify_state(i915);
|
|
|
|
if (DISPLAY_VER(i915) >= 11)
|
|
icl_display_core_uninit(i915);
|
|
else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915))
|
|
bxt_display_core_uninit(i915);
|
|
else if (DISPLAY_VER(i915) == 9)
|
|
skl_display_core_uninit(i915);
|
|
|
|
power_domains->display_core_suspended = true;
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_resume - resume power domain state
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function resume the hardware power domain state during system resume.
|
|
*
|
|
* It will return with power domain support disabled (to be enabled later by
|
|
* intel_power_domains_enable()) and must be paired with
|
|
* intel_power_domains_suspend().
|
|
*/
|
|
void intel_power_domains_resume(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
|
|
if (power_domains->display_core_suspended) {
|
|
intel_power_domains_init_hw(i915, true);
|
|
power_domains->display_core_suspended = false;
|
|
} else {
|
|
drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
|
|
power_domains->init_wakeref =
|
|
intel_display_power_get(i915, POWER_DOMAIN_INIT);
|
|
}
|
|
|
|
intel_power_domains_verify_state(i915);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
|
|
static void intel_power_domains_dump_info(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
struct i915_power_well *power_well;
|
|
|
|
for_each_power_well(i915, power_well) {
|
|
enum intel_display_power_domain domain;
|
|
|
|
drm_dbg(&i915->drm, "%-25s %d\n",
|
|
intel_power_well_name(power_well), intel_power_well_refcount(power_well));
|
|
|
|
for_each_power_domain(domain, intel_power_well_domains(power_well))
|
|
drm_dbg(&i915->drm, " %-23s %d\n",
|
|
intel_display_power_domain_str(domain),
|
|
power_domains->domain_use_count[domain]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_verify_state - verify the HW/SW state for all power wells
|
|
* @i915: i915 device instance
|
|
*
|
|
* Verify if the reference count of each power well matches its HW enabled
|
|
* state and the total refcount of the domains it belongs to. This must be
|
|
* called after modeset HW state sanitization, which is responsible for
|
|
* acquiring reference counts for any power wells in use and disabling the
|
|
* ones left on by BIOS but not required by any active output.
|
|
*/
|
|
static void intel_power_domains_verify_state(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
struct i915_power_well *power_well;
|
|
bool dump_domain_info;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
dump_domain_info = false;
|
|
for_each_power_well(i915, power_well) {
|
|
enum intel_display_power_domain domain;
|
|
int domains_count;
|
|
bool enabled;
|
|
|
|
enabled = intel_power_well_is_enabled(i915, power_well);
|
|
if ((intel_power_well_refcount(power_well) ||
|
|
intel_power_well_is_always_on(power_well)) !=
|
|
enabled)
|
|
drm_err(&i915->drm,
|
|
"power well %s state mismatch (refcount %d/enabled %d)",
|
|
intel_power_well_name(power_well),
|
|
intel_power_well_refcount(power_well), enabled);
|
|
|
|
domains_count = 0;
|
|
for_each_power_domain(domain, intel_power_well_domains(power_well))
|
|
domains_count += power_domains->domain_use_count[domain];
|
|
|
|
if (intel_power_well_refcount(power_well) != domains_count) {
|
|
drm_err(&i915->drm,
|
|
"power well %s refcount/domain refcount mismatch "
|
|
"(refcount %d/domains refcount %d)\n",
|
|
intel_power_well_name(power_well),
|
|
intel_power_well_refcount(power_well),
|
|
domains_count);
|
|
dump_domain_info = true;
|
|
}
|
|
}
|
|
|
|
if (dump_domain_info) {
|
|
static bool dumped;
|
|
|
|
if (!dumped) {
|
|
intel_power_domains_dump_info(i915);
|
|
dumped = true;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
#else
|
|
|
|
static void intel_power_domains_verify_state(struct drm_i915_private *i915)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
void intel_display_power_suspend_late(struct drm_i915_private *i915)
|
|
{
|
|
if (DISPLAY_VER(i915) >= 11 || IS_GEMINILAKE(i915) ||
|
|
IS_BROXTON(i915)) {
|
|
bxt_enable_dc9(i915);
|
|
} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
|
|
hsw_enable_pc8(i915);
|
|
}
|
|
|
|
/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,adp */
|
|
if (INTEL_PCH_TYPE(i915) >= PCH_CNP && INTEL_PCH_TYPE(i915) < PCH_DG1)
|
|
intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
|
|
}
|
|
|
|
void intel_display_power_resume_early(struct drm_i915_private *i915)
|
|
{
|
|
if (DISPLAY_VER(i915) >= 11 || IS_GEMINILAKE(i915) ||
|
|
IS_BROXTON(i915)) {
|
|
gen9_sanitize_dc_state(i915);
|
|
bxt_disable_dc9(i915);
|
|
} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
|
|
hsw_disable_pc8(i915);
|
|
}
|
|
|
|
/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,adp */
|
|
if (INTEL_PCH_TYPE(i915) >= PCH_CNP && INTEL_PCH_TYPE(i915) < PCH_DG1)
|
|
intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
|
|
}
|
|
|
|
void intel_display_power_suspend(struct drm_i915_private *i915)
|
|
{
|
|
if (DISPLAY_VER(i915) >= 11) {
|
|
icl_display_core_uninit(i915);
|
|
bxt_enable_dc9(i915);
|
|
} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
|
|
bxt_display_core_uninit(i915);
|
|
bxt_enable_dc9(i915);
|
|
} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
|
|
hsw_enable_pc8(i915);
|
|
}
|
|
}
|
|
|
|
void intel_display_power_resume(struct drm_i915_private *i915)
|
|
{
|
|
if (DISPLAY_VER(i915) >= 11) {
|
|
bxt_disable_dc9(i915);
|
|
icl_display_core_init(i915, true);
|
|
if (intel_dmc_has_payload(i915)) {
|
|
if (i915->display.dmc.allowed_dc_mask &
|
|
DC_STATE_EN_UPTO_DC6)
|
|
skl_enable_dc6(i915);
|
|
else if (i915->display.dmc.allowed_dc_mask &
|
|
DC_STATE_EN_UPTO_DC5)
|
|
gen9_enable_dc5(i915);
|
|
}
|
|
} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
|
|
bxt_disable_dc9(i915);
|
|
bxt_display_core_init(i915, true);
|
|
if (intel_dmc_has_payload(i915) &&
|
|
(i915->display.dmc.allowed_dc_mask & DC_STATE_EN_UPTO_DC5))
|
|
gen9_enable_dc5(i915);
|
|
} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
|
|
hsw_disable_pc8(i915);
|
|
}
|
|
}
|
|
|
|
void intel_display_power_debug(struct drm_i915_private *i915, struct seq_file *m)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->display.power.domains;
|
|
int i;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
seq_printf(m, "%-25s %s\n", "Power well/domain", "Use count");
|
|
for (i = 0; i < power_domains->power_well_count; i++) {
|
|
struct i915_power_well *power_well;
|
|
enum intel_display_power_domain power_domain;
|
|
|
|
power_well = &power_domains->power_wells[i];
|
|
seq_printf(m, "%-25s %d\n", intel_power_well_name(power_well),
|
|
intel_power_well_refcount(power_well));
|
|
|
|
for_each_power_domain(power_domain, intel_power_well_domains(power_well))
|
|
seq_printf(m, " %-23s %d\n",
|
|
intel_display_power_domain_str(power_domain),
|
|
power_domains->domain_use_count[power_domain]);
|
|
}
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
struct intel_ddi_port_domains {
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enum port port_start;
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enum port port_end;
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enum aux_ch aux_ch_start;
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enum aux_ch aux_ch_end;
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enum intel_display_power_domain ddi_lanes;
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enum intel_display_power_domain ddi_io;
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enum intel_display_power_domain aux_io;
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enum intel_display_power_domain aux_legacy_usbc;
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enum intel_display_power_domain aux_tbt;
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};
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static const struct intel_ddi_port_domains
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i9xx_port_domains[] = {
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{
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.port_start = PORT_A,
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.port_end = PORT_F,
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.aux_ch_start = AUX_CH_A,
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.aux_ch_end = AUX_CH_F,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
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.aux_io = POWER_DOMAIN_AUX_IO_A,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
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.aux_tbt = POWER_DOMAIN_INVALID,
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},
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};
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static const struct intel_ddi_port_domains
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d11_port_domains[] = {
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{
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.port_start = PORT_A,
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.port_end = PORT_B,
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.aux_ch_start = AUX_CH_A,
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.aux_ch_end = AUX_CH_B,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
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.aux_io = POWER_DOMAIN_AUX_IO_A,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
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.aux_tbt = POWER_DOMAIN_INVALID,
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}, {
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.port_start = PORT_C,
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.port_end = PORT_F,
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.aux_ch_start = AUX_CH_C,
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.aux_ch_end = AUX_CH_F,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_C,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_C,
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.aux_io = POWER_DOMAIN_AUX_IO_C,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_C,
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.aux_tbt = POWER_DOMAIN_AUX_TBT1,
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},
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};
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static const struct intel_ddi_port_domains
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d12_port_domains[] = {
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{
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.port_start = PORT_A,
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.port_end = PORT_C,
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.aux_ch_start = AUX_CH_A,
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.aux_ch_end = AUX_CH_C,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
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.aux_io = POWER_DOMAIN_AUX_IO_A,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
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.aux_tbt = POWER_DOMAIN_INVALID,
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}, {
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.port_start = PORT_TC1,
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.port_end = PORT_TC6,
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.aux_ch_start = AUX_CH_USBC1,
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.aux_ch_end = AUX_CH_USBC6,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
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.aux_io = POWER_DOMAIN_INVALID,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
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.aux_tbt = POWER_DOMAIN_AUX_TBT1,
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},
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};
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static const struct intel_ddi_port_domains
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d13_port_domains[] = {
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{
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.port_start = PORT_A,
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.port_end = PORT_C,
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.aux_ch_start = AUX_CH_A,
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.aux_ch_end = AUX_CH_C,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
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.aux_io = POWER_DOMAIN_AUX_IO_A,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
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.aux_tbt = POWER_DOMAIN_INVALID,
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}, {
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.port_start = PORT_TC1,
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.port_end = PORT_TC4,
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.aux_ch_start = AUX_CH_USBC1,
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.aux_ch_end = AUX_CH_USBC4,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
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.aux_io = POWER_DOMAIN_INVALID,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
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.aux_tbt = POWER_DOMAIN_AUX_TBT1,
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}, {
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.port_start = PORT_D_XELPD,
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.port_end = PORT_E_XELPD,
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.aux_ch_start = AUX_CH_D_XELPD,
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.aux_ch_end = AUX_CH_E_XELPD,
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.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_D,
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.ddi_io = POWER_DOMAIN_PORT_DDI_IO_D,
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.aux_io = POWER_DOMAIN_AUX_IO_D,
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.aux_legacy_usbc = POWER_DOMAIN_AUX_D,
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.aux_tbt = POWER_DOMAIN_INVALID,
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},
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};
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static void
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intel_port_domains_for_platform(struct drm_i915_private *i915,
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const struct intel_ddi_port_domains **domains,
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int *domains_size)
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{
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if (DISPLAY_VER(i915) >= 13) {
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*domains = d13_port_domains;
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*domains_size = ARRAY_SIZE(d13_port_domains);
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} else if (DISPLAY_VER(i915) >= 12) {
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*domains = d12_port_domains;
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*domains_size = ARRAY_SIZE(d12_port_domains);
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} else if (DISPLAY_VER(i915) >= 11) {
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*domains = d11_port_domains;
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*domains_size = ARRAY_SIZE(d11_port_domains);
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} else {
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*domains = i9xx_port_domains;
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*domains_size = ARRAY_SIZE(i9xx_port_domains);
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}
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}
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static const struct intel_ddi_port_domains *
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intel_port_domains_for_port(struct drm_i915_private *i915, enum port port)
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{
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const struct intel_ddi_port_domains *domains;
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int domains_size;
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int i;
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intel_port_domains_for_platform(i915, &domains, &domains_size);
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for (i = 0; i < domains_size; i++)
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if (port >= domains[i].port_start && port <= domains[i].port_end)
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return &domains[i];
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return NULL;
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}
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enum intel_display_power_domain
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intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port)
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{
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const struct intel_ddi_port_domains *domains = intel_port_domains_for_port(i915, port);
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if (drm_WARN_ON(&i915->drm, !domains || domains->ddi_io == POWER_DOMAIN_INVALID))
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return POWER_DOMAIN_PORT_DDI_IO_A;
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return domains->ddi_io + (int)(port - domains->port_start);
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}
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enum intel_display_power_domain
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intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port port)
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{
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const struct intel_ddi_port_domains *domains = intel_port_domains_for_port(i915, port);
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if (drm_WARN_ON(&i915->drm, !domains || domains->ddi_lanes == POWER_DOMAIN_INVALID))
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return POWER_DOMAIN_PORT_DDI_LANES_A;
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return domains->ddi_lanes + (int)(port - domains->port_start);
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}
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static const struct intel_ddi_port_domains *
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intel_port_domains_for_aux_ch(struct drm_i915_private *i915, enum aux_ch aux_ch)
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{
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const struct intel_ddi_port_domains *domains;
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int domains_size;
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int i;
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intel_port_domains_for_platform(i915, &domains, &domains_size);
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for (i = 0; i < domains_size; i++)
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if (aux_ch >= domains[i].aux_ch_start && aux_ch <= domains[i].aux_ch_end)
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return &domains[i];
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return NULL;
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}
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enum intel_display_power_domain
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intel_display_power_aux_io_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
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{
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const struct intel_ddi_port_domains *domains = intel_port_domains_for_aux_ch(i915, aux_ch);
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if (drm_WARN_ON(&i915->drm, !domains || domains->aux_io == POWER_DOMAIN_INVALID))
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return POWER_DOMAIN_AUX_IO_A;
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return domains->aux_io + (int)(aux_ch - domains->aux_ch_start);
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}
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enum intel_display_power_domain
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intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
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{
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const struct intel_ddi_port_domains *domains = intel_port_domains_for_aux_ch(i915, aux_ch);
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if (drm_WARN_ON(&i915->drm, !domains || domains->aux_legacy_usbc == POWER_DOMAIN_INVALID))
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return POWER_DOMAIN_AUX_A;
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return domains->aux_legacy_usbc + (int)(aux_ch - domains->aux_ch_start);
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}
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enum intel_display_power_domain
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intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
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{
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const struct intel_ddi_port_domains *domains = intel_port_domains_for_aux_ch(i915, aux_ch);
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if (drm_WARN_ON(&i915->drm, !domains || domains->aux_tbt == POWER_DOMAIN_INVALID))
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return POWER_DOMAIN_AUX_TBT1;
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return domains->aux_tbt + (int)(aux_ch - domains->aux_ch_start);
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}
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