drivers/gpu/drm/msm/disp/dpu1/dpu_hw_vbif.h

   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
  12 struct 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  */
  18 struct 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
  96 struct 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  */
 114 struct dpu_hw_vbif *dpu_hw_vbif_init(enum dpu_vbif idx,
 115                 void __iomem *addr,
 116                 const struct dpu_mdss_cfg *m);
 117
 118 void dpu_hw_vbif_destroy(struct dpu_hw_vbif *vbif);
 119
 120 #endif /*_DPU_HW_VBIF_H */