5af5169d75
Rather than embeddeding the display's device info within the main device
info structure, just provide a pointer to the display-specific
structure. This is in preparation for moving the display device info
definitions into the display code itself and for eventually allowing the
pointer to be assigned at runtime on platforms that use GMD_ID for
device identification.
In the future, this will also eventually allow the same display device
info structures to be used outside the current i915 code (e.g., from the
Xe driver).
v2:
- Move introduction of DISPLAY_INFO() to this patch. (Andrzej)
v3:
- Also use DISPLAY_INFO() in intel_display_reg_defs.h. (Andrzej)
- Use "{}" instead of "{ 0 }" for empty struct init. (Jani)
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523195609.73627-3-matthew.d.roper@intel.com
41 lines
1 KiB
C
41 lines
1 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 "i915_drv.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 drm_i915_private *i915)
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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(i915)->has_hti)
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i915->display.hti.state = intel_de_read(i915, HDPORT_STATE);
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}
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bool intel_hti_uses_phy(struct drm_i915_private *i915, enum phy phy)
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{
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if (drm_WARN_ON(&i915->drm, phy == PHY_NONE))
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return false;
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return i915->display.hti.state & HDPORT_ENABLED &&
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i915->display.hti.state & HDPORT_DDI_USED(phy);
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}
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u32 intel_hti_dpll_mask(struct drm_i915_private *i915)
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{
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if (!(i915->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, i915->display.hti.state);
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}
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