1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. 3 */ 4 5 #ifndef _DPU_HW_PINGPONG_H 6 #define _DPU_HW_PINGPONG_H 7 8 #include "dpu_hw_catalog.h" 9 #include "dpu_hw_mdss.h" 10 #include "dpu_hw_util.h" 11 12 #define DITHER_MATRIX_SZ 16 13 14 struct dpu_hw_pingpong; 15 16 /** 17 * struct dpu_hw_dither_cfg - dither feature structure 18 * @flags: for customizing operations 19 * @temporal_en: temperal dither enable 20 * @c0_bitdepth: c0 component bit depth 21 * @c1_bitdepth: c1 component bit depth 22 * @c2_bitdepth: c2 component bit depth 23 * @c3_bitdepth: c2 component bit depth 24 * @matrix: dither strength matrix 25 */ 26 struct dpu_hw_dither_cfg { 27 u64 flags; 28 u32 temporal_en; 29 u32 c0_bitdepth; 30 u32 c1_bitdepth; 31 u32 c2_bitdepth; 32 u32 c3_bitdepth; 33 u32 matrix[DITHER_MATRIX_SZ]; 34 }; 35 36 /** 37 * 38 * struct dpu_hw_pingpong_ops : Interface to the pingpong Hw driver functions 39 * Assumption is these functions will be called after clocks are enabled 40 * @enable_tearcheck: program and enable tear check block 41 * @disable_tearcheck: disable able tear check block 42 * @setup_dither : function to program the dither hw block 43 * @get_line_count: obtain current vertical line counter 44 */ 45 struct dpu_hw_pingpong_ops { 46 /** 47 * enables vysnc generation and sets up init value of 48 * read pointer and programs the tear check cofiguration 49 */ 50 int (*enable_tearcheck)(struct dpu_hw_pingpong *pp, 51 struct dpu_hw_tear_check *cfg); 52 53 /** 54 * disables tear check block 55 */ 56 int (*disable_tearcheck)(struct dpu_hw_pingpong *pp); 57 58 /** 59 * read, modify, write to either set or clear listening to external TE 60 * @Return: 1 if TE was originally connected, 0 if not, or -ERROR 61 */ 62 int (*connect_external_te)(struct dpu_hw_pingpong *pp, 63 bool enable_external_te); 64 65 /** 66 * Obtain current vertical line counter 67 */ 68 u32 (*get_line_count)(struct dpu_hw_pingpong *pp); 69 70 /** 71 * Disable autorefresh if enabled 72 */ 73 void (*disable_autorefresh)(struct dpu_hw_pingpong *pp, uint32_t encoder_id, u16 vdisplay); 74 75 /** 76 * Setup dither matix for pingpong block 77 */ 78 void (*setup_dither)(struct dpu_hw_pingpong *pp, 79 struct dpu_hw_dither_cfg *cfg); 80 /** 81 * Enable DSC 82 */ 83 int (*enable_dsc)(struct dpu_hw_pingpong *pp); 84 85 /** 86 * Disable DSC 87 */ 88 void (*disable_dsc)(struct dpu_hw_pingpong *pp); 89 90 /** 91 * Setup DSC 92 */ 93 int (*setup_dsc)(struct dpu_hw_pingpong *pp); 94 }; 95 96 struct dpu_hw_merge_3d; 97 98 struct dpu_hw_pingpong { 99 struct dpu_hw_blk base; 100 struct dpu_hw_blk_reg_map hw; 101 102 /* pingpong */ 103 enum dpu_pingpong idx; 104 const struct dpu_pingpong_cfg *caps; 105 struct dpu_hw_merge_3d *merge_3d; 106 107 /* ops */ 108 struct dpu_hw_pingpong_ops ops; 109 }; 110 111 /** 112 * to_dpu_hw_pingpong - convert base object dpu_hw_base to container 113 * @hw: Pointer to base hardware block 114 * return: Pointer to hardware block container 115 */ 116 static inline struct dpu_hw_pingpong *to_dpu_hw_pingpong(struct dpu_hw_blk *hw) 117 { 118 return container_of(hw, struct dpu_hw_pingpong, base); 119 } 120 121 /** 122 * dpu_hw_pingpong_init() - initializes the pingpong driver for the passed 123 * pingpong catalog entry. 124 * @dev: Corresponding device for devres management 125 * @cfg: Pingpong catalog entry for which driver object is required 126 * @addr: Mapped register io address of MDP 127 * @mdss_rev: dpu core's major and minor versions 128 * Return: Error code or allocated dpu_hw_pingpong context 129 */ 130 struct dpu_hw_pingpong *dpu_hw_pingpong_init(struct drm_device *dev, 131 const struct dpu_pingpong_cfg *cfg, 132 void __iomem *addr, 133 const struct dpu_mdss_version *mdss_rev); 134 135 #endif /*_DPU_HW_PINGPONG_H */ 136