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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | /* SPDX-License-Identifier: GPL-2.0-only */ /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. */ #ifndef _DPU_HW_PINGPONG_H #define _DPU_HW_PINGPONG_H #include "dpu_hw_catalog.h" #include "dpu_hw_mdss.h" #include "dpu_hw_util.h" #include "dpu_hw_blk.h" struct dpu_hw_pingpong; struct dpu_hw_tear_check { /* * This is ratio of MDP VSYNC clk freq(Hz) to * refresh rate divided by no of lines */ u32 vsync_count; u32 sync_cfg_height; u32 vsync_init_val; u32 sync_threshold_start; u32 sync_threshold_continue; u32 start_pos; u32 rd_ptr_irq; u8 hw_vsync_mode; }; struct dpu_hw_pp_vsync_info { u32 rd_ptr_init_val; /* value of rd pointer at vsync edge */ u32 rd_ptr_frame_count; /* num frames sent since enabling interface */ u32 rd_ptr_line_count; /* current line on panel (rd ptr) */ u32 wr_ptr_line_count; /* current line within pp fifo (wr ptr) */ }; /** * * struct dpu_hw_pingpong_ops : Interface to the pingpong Hw driver functions * Assumption is these functions will be called after clocks are enabled * @setup_tearcheck : program tear check values * @enable_tearcheck : enables tear check * @get_vsync_info : retries timing info of the panel * @setup_dither : function to program the dither hw block * @get_line_count: obtain current vertical line counter */ struct dpu_hw_pingpong_ops { /** * enables vysnc generation and sets up init value of * read pointer and programs the tear check cofiguration */ int (*setup_tearcheck)(struct dpu_hw_pingpong *pp, struct dpu_hw_tear_check *cfg); /** * enables tear check block */ int (*enable_tearcheck)(struct dpu_hw_pingpong *pp, bool enable); /** * read, modify, write to either set or clear listening to external TE * @Return: 1 if TE was originally connected, 0 if not, or -ERROR */ int (*connect_external_te)(struct dpu_hw_pingpong *pp, bool enable_external_te); /** * provides the programmed and current * line_count */ int (*get_vsync_info)(struct dpu_hw_pingpong *pp, struct dpu_hw_pp_vsync_info *info); /** * poll until write pointer transmission starts * @Return: 0 on success, -ETIMEDOUT on timeout */ int (*poll_timeout_wr_ptr)(struct dpu_hw_pingpong *pp, u32 timeout_us); /** * Obtain current vertical line counter */ u32 (*get_line_count)(struct dpu_hw_pingpong *pp); }; struct dpu_hw_pingpong { struct dpu_hw_blk base; struct dpu_hw_blk_reg_map hw; /* pingpong */ enum dpu_pingpong idx; const struct dpu_pingpong_cfg *caps; /* ops */ struct dpu_hw_pingpong_ops ops; }; /** * dpu_hw_pingpong_init - initializes the pingpong driver for the passed * pingpong idx. * @idx: Pingpong index for which driver object is required * @addr: Mapped register io address of MDP * @m: Pointer to mdss catalog data * Returns: Error code or allocated dpu_hw_pingpong context */ struct dpu_hw_pingpong *dpu_hw_pingpong_init(enum dpu_pingpong idx, void __iomem *addr, const struct dpu_mdss_cfg *m); /** * dpu_hw_pingpong_destroy - destroys pingpong driver context * should be called to free the context * @pp: Pointer to PP driver context returned by dpu_hw_pingpong_init */ void dpu_hw_pingpong_destroy(struct dpu_hw_pingpong *pp); #endif /*_DPU_HW_PINGPONG_H */ |