diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h new file mode 100644 index 000000000..59de72b38 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h @@ -0,0 +1,112 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. + */ + +#ifndef __DPU_RM_H__ +#define __DPU_RM_H__ + +#include <linux/list.h> + +#include "msm_kms.h" +#include "dpu_hw_top.h" + +struct dpu_global_state; + +/** + * struct dpu_rm - DPU dynamic hardware resource manager + * @pingpong_blks: array of pingpong hardware resources + * @mixer_blks: array of layer mixer hardware resources + * @ctl_blks: array of ctl hardware resources + * @hw_intf: array of intf hardware resources + * @hw_wb: array of wb hardware resources + * @dspp_blks: array of dspp hardware resources + */ +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 *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]; +}; + +/** + * dpu_rm_init - Read hardware catalog and create reservation tracking objects + * for all HW blocks. + * @rm: DPU Resource Manager handle + * @cat: Pointer to hardware catalog + * @mmio: mapped register io address of MDP + * @Return: 0 on Success otherwise -ERROR + */ +int dpu_rm_init(struct dpu_rm *rm, + const struct dpu_mdss_cfg *cat, + void __iomem *mmio); + +/** + * dpu_rm_destroy - Free all memory allocated by dpu_rm_init + * @rm: DPU Resource Manager handle + * @Return: 0 on Success otherwise -ERROR + */ +int dpu_rm_destroy(struct dpu_rm *rm); + +/** + * dpu_rm_reserve - Given a CRTC->Encoder->Connector display chain, analyze + * the use connections and user requirements, specified through related + * topology control properties, and reserve hardware blocks to that + * display chain. + * HW blocks can then be accessed through dpu_rm_get_* functions. + * HW Reservations should be released via dpu_rm_release_hw. + * @rm: DPU Resource Manager handle + * @drm_enc: DRM Encoder handle + * @crtc_state: Proposed Atomic DRM CRTC State handle + * @topology: Pointer to topology info for the display + * @Return: 0 on Success otherwise -ERROR + */ +int dpu_rm_reserve(struct dpu_rm *rm, + struct dpu_global_state *global_state, + struct drm_encoder *drm_enc, + struct drm_crtc_state *crtc_state, + struct msm_display_topology topology); + +/** + * dpu_rm_reserve - Given the encoder for the display chain, release any + * HW blocks previously reserved for that use case. + * @rm: DPU Resource Manager handle + * @enc: DRM Encoder handle + * @Return: 0 on Success otherwise -ERROR + */ +void dpu_rm_release(struct dpu_global_state *global_state, + struct drm_encoder *enc); + +/** + * Get hw resources of the given type that are assigned to this encoder. + */ +int dpu_rm_get_assigned_resources(struct dpu_rm *rm, + struct dpu_global_state *global_state, uint32_t enc_id, + enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size); + +/** + * 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]; +} + +#endif /* __DPU_RM_H__ */ + |