a181e94013
Reintroduce the special PSR AUX CH setup for hsw/bdw. Not all
of it was even removed (BDW AUX data registers were left behind).
Update the code to use REG_BIT() & co. while at it.
v2: Define the SRD_AUX_CTL bits in terms of DP_AUX_CTL bits (Jouni)
Add a comment explaining the hand rolled DPCD write (Jouni)
Cc: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230609141404.12729-6-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
24 lines
558 B
C
24 lines
558 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2020-2021 Intel Corporation
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*/
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#ifndef __INTEL_DP_AUX_H__
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#define __INTEL_DP_AUX_H__
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#include <linux/types.h>
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enum aux_ch;
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struct drm_i915_private;
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struct intel_dp;
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struct intel_encoder;
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void intel_dp_aux_fini(struct intel_dp *intel_dp);
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void intel_dp_aux_init(struct intel_dp *intel_dp);
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enum aux_ch intel_dp_aux_ch(struct intel_encoder *encoder);
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void intel_dp_aux_irq_handler(struct drm_i915_private *i915);
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u32 intel_dp_aux_pack(const u8 *src, int src_bytes);
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#endif /* __INTEL_DP_AUX_H__ */
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