LXR linux/drivers/gpu/drm/msm/disp/dpu1/dpu_hw

   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_VBIF_H
   6#define _DPU_HW_VBIF_H
   7
   8#include "dpu_hw_catalog.h"
   9#include "dpu_hw_mdss.h"
  10#include "dpu_hw_util.h"
  11
  12struct dpu_hw_vbif;
  13
  14/**
  15 * struct dpu_hw_vbif_ops : Interface to the VBIF hardware driver functions
  16 *  Assumption is these functions will be called after clocks are enabled
  17 */
  18struct dpu_hw_vbif_ops {
  19        /**
  20         * set_limit_conf - set transaction limit config
  21         * @vbif: vbif context driver
  22         * @xin_id: client interface identifier
  23         * @rd: true for read limit; false for write limit
  24         * @limit: outstanding transaction limit
  25         */
  26        void (*set_limit_conf)(struct dpu_hw_vbif *vbif,
  27                        u32 xin_id, bool rd, u32 limit);
  28
  29        /**
  30         * get_limit_conf - get transaction limit config
  31         * @vbif: vbif context driver
  32         * @xin_id: client interface identifier
  33         * @rd: true for read limit; false for write limit
  34         * @return: outstanding transaction limit
  35         */
  36        u32 (*get_limit_conf)(struct dpu_hw_vbif *vbif,
  37                        u32 xin_id, bool rd);
  38
  39        /**
  40         * set_halt_ctrl - set halt control
  41         * @vbif: vbif context driver
  42         * @xin_id: client interface identifier
  43         * @enable: halt control enable
  44         */
  45        void (*set_halt_ctrl)(struct dpu_hw_vbif *vbif,
  46                        u32 xin_id, bool enable);
  47
  48        /**
  49         * get_halt_ctrl - get halt control
  50         * @vbif: vbif context driver
  51         * @xin_id: client interface identifier
  52         * @return: halt control enable
  53         */
  54        bool (*get_halt_ctrl)(struct dpu_hw_vbif *vbif,
  55                        u32 xin_id);
  56
  57        /**
  58         * set_qos_remap - set QoS priority remap
  59         * @vbif: vbif context driver
  60         * @xin_id: client interface identifier
  61         * @level: priority level
  62         * @remap_level: remapped level
  63         */
  64        void (*set_qos_remap)(struct dpu_hw_vbif *vbif,
  65                        u32 xin_id, u32 level, u32 remap_level);
  66
  67        /**
  68         * set_mem_type - set memory type
  69         * @vbif: vbif context driver
  70         * @xin_id: client interface identifier
  71         * @value: memory type value
  72         */
  73        void (*set_mem_type)(struct dpu_hw_vbif *vbif,
  74                        u32 xin_id, u32 value);
  75
  76        /**
  77         * clear_errors - clear any vbif errors
  78         *      This function clears any detected pending/source errors
  79         *      on the VBIF interface, and optionally returns the detected
  80         *      error mask(s).
  81         * @vbif: vbif context driver
  82         * @pnd_errors: pointer to pending error reporting variable
  83         * @src_errors: pointer to source error reporting variable
  84         */
  85        void (*clear_errors)(struct dpu_hw_vbif *vbif,
  86                u32 *pnd_errors, u32 *src_errors);
  87
  88        /**
  89         * set_write_gather_en - set write_gather enable
  90         * @vbif: vbif context driver
  91         * @xin_id: client interface identifier
  92         */
  93        void (*set_write_gather_en)(struct dpu_hw_vbif *vbif, u32 xin_id);
  94};
  95
  96struct dpu_hw_vbif {
  97        /* base */
  98        struct dpu_hw_blk_reg_map hw;
  99
 100        /* vbif */
 101        enum dpu_vbif idx;
 102        const struct dpu_vbif_cfg *cap;
 103
 104        /* ops */
 105        struct dpu_hw_vbif_ops ops;
 106};
 107
 108/**
 109 * dpu_hw_vbif_init - initializes the vbif driver for the passed interface idx
 110 * @idx:  Interface index for which driver object is required
 111 * @addr: Mapped register io address of MDSS
 112 * @m:    Pointer to mdss catalog data
 113 */
 114struct dpu_hw_vbif *dpu_hw_vbif_init(enum dpu_vbif idx,
 115                void __iomem *addr,
 116                const struct dpu_mdss_cfg *m);
 117
 118void dpu_hw_vbif_destroy(struct dpu_hw_vbif *vbif);
 119
 120#endif /*_DPU_HW_VBIF_H */
 121