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f7f46a80fa
Add support for forcing the link bpp on a connector via a connector debugfs entry. During reducing link bpps due to a link BW limit, keep bpps close to their forced value. Add the debugfs entry to all relevant connectors: all DP connectors and on an FDI link CRT/SDVO/LVDS/HDMI connectors. v2: - Move adding the debugfs entries to this patch. - Rename i915_force_link_bpp to intel_force_link_bpp. (Jani) - Select the relevant connectors via platform checks. (Jani) - Use for_each_new_intel_connector_in_state(). (Jani) - Fix 64 bit division vs. 32 bit build when converting str to q4. (lkp) - Avoid division and addition overflow when converting str to q4. v3: - Add TODO: to make the non-DSC min bpp value connector specific. (Ankit) Cc: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://lore.kernel.org/r/20250509180340.554867-12-imre.deak@intel.com
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#ifndef __INTEL_LINK_BW_H__
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#define __INTEL_LINK_BW_H__
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#include <linux/types.h>
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#include "intel_display_limits.h"
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struct intel_atomic_state;
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struct intel_connector;
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struct intel_crtc_state;
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struct intel_link_bw_limits {
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u8 force_fec_pipes;
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u8 bpp_limit_reached_pipes;
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/* in 1/16 bpp units */
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int max_bpp_x16[I915_MAX_PIPES];
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};
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void intel_link_bw_init_limits(struct intel_atomic_state *state,
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struct intel_link_bw_limits *limits);
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int intel_link_bw_reduce_bpp(struct intel_atomic_state *state,
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struct intel_link_bw_limits *limits,
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u8 pipe_mask,
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const char *reason);
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bool intel_link_bw_set_bpp_limit_for_pipe(struct intel_atomic_state *state,
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const struct intel_link_bw_limits *old_limits,
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struct intel_link_bw_limits *new_limits,
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enum pipe pipe);
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int intel_link_bw_atomic_check(struct intel_atomic_state *state,
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struct intel_link_bw_limits *new_limits);
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void intel_link_bw_connector_debugfs_add(struct intel_connector *connector);
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#endif
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