| /* SPDX-License-Identifier: MIT */ |
| /* |
| * Copyright © 2020 Intel Corporation |
| */ |
| |
| #ifndef __INTEL_DRAM_H__ |
| #define __INTEL_DRAM_H__ |
| |
| #include <linux/types.h> |
| |
| struct drm_i915_private; |
| struct drm_device; |
| |
| struct dram_info { |
| bool wm_lv_0_adjust_needed; |
| u8 num_channels; |
| bool symmetric_memory; |
| enum intel_dram_type { |
| INTEL_DRAM_UNKNOWN, |
| INTEL_DRAM_DDR3, |
| INTEL_DRAM_DDR4, |
| INTEL_DRAM_LPDDR3, |
| INTEL_DRAM_LPDDR4, |
| INTEL_DRAM_DDR5, |
| INTEL_DRAM_LPDDR5, |
| INTEL_DRAM_GDDR, |
| INTEL_DRAM_GDDR_ECC, |
| __INTEL_DRAM_TYPE_MAX, |
| } type; |
| u8 num_qgv_points; |
| u8 num_psf_gv_points; |
| }; |
| |
| void intel_dram_edram_detect(struct drm_i915_private *i915); |
| int intel_dram_detect(struct drm_i915_private *i915); |
| unsigned int i9xx_fsb_freq(struct drm_i915_private *i915); |
| const struct dram_info *intel_dram_info(struct drm_device *drm); |
| |
| #endif /* __INTEL_DRAM_H__ */ |
