Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2022 Intel Corporation
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*/
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#include <drm/drm_device.h>
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#include <drm/drm_print.h>
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#include "intel_de.h"
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#include "intel_display.h"
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#include "intel_hti.h"
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#include "intel_hti_regs.h"
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void intel_hti_init(struct intel_display *display)
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{
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/*
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* If the platform has HTI, we need to find out whether it has reserved
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* any display resources before we create our display outputs.
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*/
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if (DISPLAY_INFO(display)->has_hti)
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display->hti.state = intel_de_read(display, HDPORT_STATE);
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}
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bool intel_hti_uses_phy(struct intel_display *display, enum phy phy)
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{
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if (drm_WARN_ON(display->drm, phy == PHY_NONE))
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return false;
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return display->hti.state & HDPORT_ENABLED &&
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display->hti.state & HDPORT_DDI_USED(phy);
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}
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u32 intel_hti_dpll_mask(struct intel_display *display)
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{
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if (!(display->hti.state & HDPORT_ENABLED))
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return 0;
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/*
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* Note: This is subtle. The values must coincide with what's defined
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* for the platform.
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*/
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return REG_FIELD_GET(HDPORT_DPLL_USED_MASK, display->hti.state);
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}
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