45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2020 Intel Corporation
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*/
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#ifndef __INTEL_DRAM_H__
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#define __INTEL_DRAM_H__
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#include <linux/types.h>
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struct drm_i915_private;
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struct drm_device;
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struct dram_info {
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enum intel_dram_type {
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INTEL_DRAM_UNKNOWN,
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INTEL_DRAM_DDR2,
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INTEL_DRAM_DDR3,
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INTEL_DRAM_DDR4,
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INTEL_DRAM_LPDDR3,
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INTEL_DRAM_LPDDR4,
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INTEL_DRAM_DDR5,
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INTEL_DRAM_LPDDR5,
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INTEL_DRAM_GDDR,
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INTEL_DRAM_GDDR_ECC,
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__INTEL_DRAM_TYPE_MAX,
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} type;
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unsigned int fsb_freq;
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unsigned int mem_freq;
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u8 num_channels;
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u8 num_qgv_points;
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u8 num_psf_gv_points;
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bool symmetric_memory;
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bool has_16gb_dimms;
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};
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void intel_dram_edram_detect(struct drm_i915_private *i915);
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int intel_dram_detect(struct drm_i915_private *i915);
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unsigned int intel_fsb_freq(struct drm_i915_private *i915);
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unsigned int intel_mem_freq(struct drm_i915_private *i915);
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const struct dram_info *intel_dram_info(struct drm_device *drm);
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const char *intel_dram_type_str(enum intel_dram_type type);
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#endif /* __INTEL_DRAM_H__ */
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