drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h- Extension
.h- Size
- 3893 bytes
- Lines
- 130
- Domain
- Driver Families
- Bucket
- drivers/gpu
- Inferred role
- Driver Families: implementation source
- Status
- source implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/list.hmsm_kms.hdpu_hw_top.h
Detected Declarations
struct dpu_global_statestruct dpu_rmstruct dpu_rm_sspp_requirementsstruct msm_display_topology
Annotated Snippet
struct dpu_rm {
struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
struct dpu_hw_intf *hw_intf[INTF_MAX - INTF_0];
struct dpu_hw_wb *hw_wb[WB_MAX - WB_0];
struct dpu_hw_blk *cwb_blks[CWB_MAX - CWB_0];
struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0];
struct dpu_hw_sspp *hw_sspp[SSPP_MAX - SSPP_NONE];
struct dpu_hw_blk *cdm_blk;
bool has_legacy_ctls;
};
struct dpu_rm_sspp_requirements {
bool yuv;
bool scale;
bool rot90;
};
/**
* struct msm_display_topology - defines a display topology pipeline
* @num_lm: number of layer mixers used
* @num_intf: number of interfaces the panel is mounted on
* @num_dspp: number of dspp blocks used
* @num_dsc: number of Display Stream Compression (DSC) blocks used
* @num_cdm: indicates how many outputs are requesting cdm block for
* this display topology
* @cwb_enabled: indicates whether CWB is enabled for this display topology
*/
struct msm_display_topology {
u32 num_lm;
u32 num_intf;
u32 num_dspp;
u32 num_dsc;
int num_cdm;
bool cwb_enabled;
};
int dpu_rm_init(struct drm_device *dev,
struct dpu_rm *rm,
const struct dpu_mdss_cfg *cat,
const struct qcom_ubwc_cfg_data *mdss_data,
void __iomem *mmio);
int dpu_rm_reserve(struct dpu_rm *rm,
struct dpu_global_state *global_state,
struct drm_crtc *crtc,
struct msm_display_topology *topology);
void dpu_rm_release(struct dpu_global_state *global_state,
struct drm_crtc *crtc);
struct dpu_hw_sspp *dpu_rm_reserve_sspp(struct dpu_rm *rm,
struct dpu_global_state *global_state,
struct drm_crtc *crtc,
struct dpu_rm_sspp_requirements *reqs);
void dpu_rm_release_all_sspp(struct dpu_global_state *global_state,
struct drm_crtc *crtc);
int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
struct dpu_global_state *global_state, struct drm_crtc *crtc,
enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size);
void dpu_rm_print_state(struct drm_printer *p,
const struct dpu_global_state *global_state);
/**
* dpu_rm_get_intf - Return a struct dpu_hw_intf instance given it's index.
* @rm: DPU Resource Manager handle
* @intf_idx: INTF's index
*/
static inline struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx)
{
return rm->hw_intf[intf_idx - INTF_0];
}
/**
* dpu_rm_get_wb - Return a struct dpu_hw_wb instance given it's index.
* @rm: DPU Resource Manager handle
* @wb_idx: WB index
*/
static inline struct dpu_hw_wb *dpu_rm_get_wb(struct dpu_rm *rm, enum dpu_wb wb_idx)
{
return rm->hw_wb[wb_idx - WB_0];
}
/**
Annotation
- Immediate include surface: `linux/list.h`, `msm_kms.h`, `dpu_hw_top.h`.
- Detected declarations: `struct dpu_global_state`, `struct dpu_rm`, `struct dpu_rm_sspp_requirements`, `struct msm_display_topology`.
- Atlas domain: Driver Families / drivers/gpu.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.