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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
   4  * Copyright (C) 2013 Red Hat
   5  * Author: Rob Clark <robdclark@gmail.com>
   6  */
   7
   8 #ifndef __DPU_KMS_H__
   9 #define __DPU_KMS_H__
  10
  11 #include "msm_drv.h"
  12 #include "msm_kms.h"
  13 #include "msm_mmu.h"
  14 #include "msm_gem.h"
  15 #include "dpu_hw_catalog.h"
  16 #include "dpu_hw_ctl.h"
  17 #include "dpu_hw_lm.h"
  18 #include "dpu_hw_interrupts.h"
  19 #include "dpu_hw_top.h"
  20 #include "dpu_io_util.h"
  21 #include "dpu_rm.h"
  22 #include "dpu_core_perf.h"
  23
  24 #define DRMID(x) ((x) ? (x)->base.id : -1)
  25
  26 /**
  27  * DPU_DEBUG - macro for kms/plane/crtc/encoder/connector logs
  28  * @fmt: Pointer to format string
  29  */
  30 #define DPU_DEBUG(fmt, ...)                                                \
  31         do {                                                               \
  32                 if (unlikely(drm_debug & DRM_UT_KMS))                      \
  33                         DRM_DEBUG(fmt, ##__VA_ARGS__); \
  34                 else                                                       \
  35                         pr_debug(fmt, ##__VA_ARGS__);                      \
  36         } while (0)
  37
  38 /**
  39  * DPU_DEBUG_DRIVER - macro for hardware driver logging
  40  * @fmt: Pointer to format string
  41  */
  42 #define DPU_DEBUG_DRIVER(fmt, ...)                                         \
  43         do {                                                               \
  44                 if (unlikely(drm_debug & DRM_UT_DRIVER))                   \
  45                         DRM_ERROR(fmt, ##__VA_ARGS__); \
  46                 else                                                       \
  47                         pr_debug(fmt, ##__VA_ARGS__);                      \
  48         } while (0)
  49
  50 #define DPU_ERROR(fmt, ...) pr_err("[dpu error]" fmt, ##__VA_ARGS__)
  51
  52 /**
  53  * ktime_compare_safe - compare two ktime structures
  54  *      This macro is similar to the standard ktime_compare() function, but
  55  *      attempts to also handle ktime overflows.
  56  * @A: First ktime value
  57  * @B: Second ktime value
  58  * Returns: -1 if A < B, 0 if A == B, 1 if A > B
  59  */
  60 #define ktime_compare_safe(A, B) \
  61         ktime_compare(ktime_sub((A), (B)), ktime_set(0, 0))
  62
  63 #define DPU_NAME_SIZE  12
  64
  65 /*
  66  * struct dpu_irq_callback - IRQ callback handlers
  67  * @list: list to callback
  68  * @func: intr handler
  69  * @arg: argument for the handler
  70  */
  71 struct dpu_irq_callback {
  72         struct list_head list;
  73         void (*func)(void *arg, int irq_idx);
  74         void *arg;
  75 };
  76
  77 /**
  78  * struct dpu_irq: IRQ structure contains callback registration info
  79  * @total_irq:    total number of irq_idx obtained from HW interrupts mapping
  80  * @irq_cb_tbl:   array of IRQ callbacks setting
  81  * @enable_counts array of IRQ enable counts
  82  * @cb_lock:      callback lock
  83  * @debugfs_file: debugfs file for irq statistics
  84  */
  85 struct dpu_irq {
  86         u32 total_irqs;
  87         struct list_head *irq_cb_tbl;
  88         atomic_t *enable_counts;
  89         atomic_t *irq_counts;
  90         spinlock_t cb_lock;
  91 };
  92
  93 struct dpu_kms {
  94         struct msm_kms base;
  95         struct drm_device *dev;
  96         int core_rev;
  97         struct dpu_mdss_cfg *catalog;
  98
  99         /* io/register spaces: */
 100         void __iomem *mmio, *vbif[VBIF_MAX], *reg_dma;
 101         unsigned long mmio_len, vbif_len[VBIF_MAX], reg_dma_len;
 102
 103         struct regulator *vdd;
 104         struct regulator *mmagic;
 105         struct regulator *venus;
 106
 107         struct dpu_hw_intr *hw_intr;
 108         struct dpu_irq irq_obj;
 109
 110         struct dpu_core_perf perf;
 111
 112         struct dpu_rm rm;
 113         bool rm_init;
 114
 115         struct dpu_hw_vbif *hw_vbif[VBIF_MAX];
 116         struct dpu_hw_mdp *hw_mdp;
 117
 118         bool has_danger_ctrl;
 119
 120         struct platform_device *pdev;
 121         bool rpm_enabled;
 122         struct dss_module_power mp;
 123 };
 124
 125 struct vsync_info {
 126         u32 frame_count;
 127         u32 line_count;
 128 };
 129
 130 #define to_dpu_kms(x) container_of(x, struct dpu_kms, base)
 131
 132 /* get struct msm_kms * from drm_device * */
 133 #define ddev_to_msm_kms(D) ((D) && (D)->dev_private ? \
 134                 ((struct msm_drm_private *)((D)->dev_private))->kms : NULL)
 135
 136 /**
 137  * Debugfs functions - extra helper functions for debugfs support
 138  *
 139  * Main debugfs documentation is located at,
 140  *
 141  * Documentation/filesystems/debugfs.txt
 142  *
 143  * @dpu_debugfs_setup_regset32: Initialize data for dpu_debugfs_create_regset32
 144  * @dpu_debugfs_create_regset32: Create 32-bit register dump file
 145  * @dpu_debugfs_get_root: Get root dentry for DPU_KMS's debugfs node
 146  */
 147
 148 /**
 149  * Companion structure for dpu_debugfs_create_regset32. Do not initialize the
 150  * members of this structure explicitly; use dpu_debugfs_setup_regset32 instead.
 151  */
 152 struct dpu_debugfs_regset32 {
 153         uint32_t offset;
 154         uint32_t blk_len;
 155         struct dpu_kms *dpu_kms;
 156 };
 157
 158 /**
 159  * dpu_debugfs_setup_regset32 - Initialize register block definition for debugfs
 160  * This function is meant to initialize dpu_debugfs_regset32 structures for use
 161  * with dpu_debugfs_create_regset32.
 162  * @regset: opaque register definition structure
 163  * @offset: sub-block offset
 164  * @length: sub-block length, in bytes
 165  * @dpu_kms: pointer to dpu kms structure
 166  */
 167 void dpu_debugfs_setup_regset32(struct dpu_debugfs_regset32 *regset,
 168                 uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms);
 169
 170 /**
 171  * dpu_debugfs_create_regset32 - Create register read back file for debugfs
 172  *
 173  * This function is almost identical to the standard debugfs_create_regset32()
 174  * function, with the main difference being that a list of register
 175  * names/offsets do not need to be provided. The 'read' function simply outputs
 176  * sequential register values over a specified range.
 177  *
 178  * Similar to the related debugfs_create_regset32 API, the structure pointed to
 179  * by regset needs to persist for the lifetime of the created file. The calling
 180  * code is responsible for initialization/management of this structure.
 181  *
 182  * The structure pointed to by regset is meant to be opaque. Please use
 183  * dpu_debugfs_setup_regset32 to initialize it.
 184  *
 185  * @name:   File name within debugfs
 186  * @mode:   File mode within debugfs
 187  * @parent: Parent directory entry within debugfs, can be NULL
 188  * @regset: Pointer to persistent register block definition
 189  *
 190  * Return: dentry pointer for newly created file, use either debugfs_remove()
 191  *         or debugfs_remove_recursive() (on a parent directory) to remove the
 192  *         file
 193  */
 194 void *dpu_debugfs_create_regset32(const char *name, umode_t mode,
 195                 void *parent, struct dpu_debugfs_regset32 *regset);
 196
 197 /**
 198  * dpu_debugfs_get_root - Return root directory entry for KMS's debugfs
 199  *
 200  * The return value should be passed as the 'parent' argument to subsequent
 201  * debugfs create calls.
 202  *
 203  * @dpu_kms: Pointer to DPU's KMS structure
 204  *
 205  * Return: dentry pointer for DPU's debugfs location
 206  */
 207 void *dpu_debugfs_get_root(struct dpu_kms *dpu_kms);
 208
 209 /**
 210  * DPU info management functions
 211  * These functions/definitions allow for building up a 'dpu_info' structure
 212  * containing one or more "key=value\n" entries.
 213  */
 214 #define DPU_KMS_INFO_MAX_SIZE   4096
 215
 216 /**
 217  * Vblank enable/disable functions
 218  */
 219 int dpu_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 220 void dpu_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 221
 222 void dpu_kms_encoder_enable(struct drm_encoder *encoder);
 223
 224 /**
 225  * dpu_kms_get_clk_rate() - get the clock rate
 226  * @dpu_kms:  poiner to dpu_kms structure
 227  * @clock_name: clock name to get the rate
 228  *
 229  * Return: current clock rate
 230  */
 231 u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name);
 232
 233 #endif /* __dpu_kms_H__ */