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fa6a4cdeaf
Disable the DMC event handlers before loading the firmware and after uninitializing the display, to make sure the firmware is inactive. This matches the Bspec "Sequences for Display C5 and C6" page for GEN12+. Add a TODO comment for doing the same on pre-GEN12 platforms. v2: - Add a macro for the number of event handlers. - Disable the event handlers only on GEN12+. - s/dev_priv/i915/ in docbook comment. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> #v1 Link: https://patchwork.freedesktop.org/patch/msgid/20220728081440.1676857-1-imre.deak@intel.com
61 lines
1.5 KiB
C
61 lines
1.5 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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#ifndef __INTEL_DMC_H__
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#define __INTEL_DMC_H__
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#include "i915_reg_defs.h"
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#include "intel_wakeref.h"
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#include <linux/workqueue.h>
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struct drm_i915_error_state_buf;
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struct drm_i915_private;
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enum {
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DMC_FW_MAIN = 0,
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DMC_FW_PIPEA,
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DMC_FW_PIPEB,
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DMC_FW_PIPEC,
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DMC_FW_PIPED,
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DMC_FW_MAX
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};
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struct intel_dmc {
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struct work_struct work;
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const char *fw_path;
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u32 required_version;
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u32 max_fw_size; /* bytes */
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u32 version;
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struct dmc_fw_info {
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u32 mmio_count;
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i915_reg_t mmioaddr[20];
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u32 mmiodata[20];
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u32 dmc_offset;
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u32 start_mmioaddr;
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u32 dmc_fw_size; /*dwords */
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u32 *payload;
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bool present;
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} dmc_info[DMC_FW_MAX];
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u32 dc_state;
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u32 target_dc_state;
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u32 allowed_dc_mask;
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intel_wakeref_t wakeref;
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};
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void intel_dmc_ucode_init(struct drm_i915_private *i915);
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void intel_dmc_load_program(struct drm_i915_private *i915);
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void intel_dmc_disable_program(struct drm_i915_private *i915);
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void intel_dmc_ucode_fini(struct drm_i915_private *i915);
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void intel_dmc_ucode_suspend(struct drm_i915_private *i915);
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void intel_dmc_ucode_resume(struct drm_i915_private *i915);
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bool intel_dmc_has_payload(struct drm_i915_private *i915);
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void intel_dmc_debugfs_register(struct drm_i915_private *i915);
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void intel_dmc_print_error_state(struct drm_i915_error_state_buf *m,
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struct drm_i915_private *i915);
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void assert_dmc_loaded(struct drm_i915_private *i915);
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#endif /* __INTEL_DMC_H__ */
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