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 <drm/drm_drv.h>
  12
  13 #include "msm_drv.h"
  14 #include "msm_kms.h"
  15 #include "msm_mmu.h"
  16 #include "msm_gem.h"
  17 #include "dpu_hw_catalog.h"
  18 #include "dpu_hw_ctl.h"
  19 #include "dpu_hw_lm.h"
  20 #include "dpu_hw_interrupts.h"
  21 #include "dpu_hw_top.h"
  22 #include "dpu_io_util.h"
  23 #include "dpu_rm.h"
  24 #include "dpu_core_perf.h"
  25
  26 #define DRMID(x) ((x) ? (x)->base.id : -1)
  27
  28 /**
  29  * DPU_DEBUG - macro for kms/plane/crtc/encoder/connector logs
  30  * @fmt: Pointer to format string
  31  */
  32 #define DPU_DEBUG(fmt, ...)                                                \
  33         do {                                                               \
  34                 if (drm_debug_enabled(DRM_UT_KMS))                         \
  35                         DRM_DEBUG(fmt, ##__VA_ARGS__); \
  36                 else                                                       \
  37                         pr_debug(fmt, ##__VA_ARGS__);                      \
  38         } while (0)
  39
  40 /**
  41  * DPU_DEBUG_DRIVER - macro for hardware driver logging
  42  * @fmt: Pointer to format string
  43  */
  44 #define DPU_DEBUG_DRIVER(fmt, ...)                                         \
  45         do {                                                               \
  46                 if (drm_debug_enabled(DRM_UT_DRIVER))                      \
  47                         DRM_ERROR(fmt, ##__VA_ARGS__); \
  48                 else                                                       \
  49                         pr_debug(fmt, ##__VA_ARGS__);                      \
  50         } while (0)
  51
  52 #define DPU_ERROR(fmt, ...) pr_err("[dpu error]" fmt, ##__VA_ARGS__)
  53
  54 /**
  55  * ktime_compare_safe - compare two ktime structures
  56  *      This macro is similar to the standard ktime_compare() function, but
  57  *      attempts to also handle ktime overflows.
  58  * @A: First ktime value
  59  * @B: Second ktime value
  60  * Returns: -1 if A < B, 0 if A == B, 1 if A > B
  61  */
  62 #define ktime_compare_safe(A, B) \
  63         ktime_compare(ktime_sub((A), (B)), ktime_set(0, 0))
  64
  65 #define DPU_NAME_SIZE  12
  66
  67 /*
  68  * struct dpu_irq_callback - IRQ callback handlers
  69  * @list: list to callback
  70  * @func: intr handler
  71  * @arg: argument for the handler
  72  */
  73 struct dpu_irq_callback {
  74         struct list_head list;
  75         void (*func)(void *arg, int irq_idx);
  76         void *arg;
  77 };
  78
  79 /**
  80  * struct dpu_irq: IRQ structure contains callback registration info
  81  * @total_irq:    total number of irq_idx obtained from HW interrupts mapping
  82  * @irq_cb_tbl:   array of IRQ callbacks setting
  83  * @enable_counts array of IRQ enable counts
  84  * @cb_lock:      callback lock
  85  * @debugfs_file: debugfs file for irq statistics
  86  */
  87 struct dpu_irq {
  88         u32 total_irqs;
  89         struct list_head *irq_cb_tbl;
  90         atomic_t *enable_counts;
  91         atomic_t *irq_counts;
  92         spinlock_t cb_lock;
  93 };
  94
  95 struct dpu_kms {
  96         struct msm_kms base;
  97         struct drm_device *dev;
  98         int core_rev;
  99         struct dpu_mdss_cfg *catalog;
 100
 101         /* io/register spaces: */
 102         void __iomem *mmio, *vbif[VBIF_MAX], *reg_dma;
 103         unsigned long mmio_len, vbif_len[VBIF_MAX], reg_dma_len;
 104
 105         struct regulator *vdd;
 106         struct regulator *mmagic;
 107         struct regulator *venus;
 108
 109         struct dpu_hw_intr *hw_intr;
 110         struct dpu_irq irq_obj;
 111
 112         struct dpu_core_perf perf;
 113
 114         struct dpu_rm rm;
 115         bool rm_init;
 116
 117         struct dpu_hw_vbif *hw_vbif[VBIF_MAX];
 118         struct dpu_hw_mdp *hw_mdp;
 119
 120         bool has_danger_ctrl;
 121
 122         struct platform_device *pdev;
 123         bool rpm_enabled;
 124         struct dss_module_power mp;
 125
 126         /* reference count bandwidth requests, so we know when we can
 127          * release bandwidth.  Each atomic update increments, and frame-
 128          * done event decrements.  Additionally, for video mode, the
 129          * reference is incremented when crtc is enabled, and decremented
 130          * when disabled.
 131          */
 132         atomic_t bandwidth_ref;
 133 };
 134
 135 struct vsync_info {
 136         u32 frame_count;
 137         u32 line_count;
 138 };
 139
 140 #define to_dpu_kms(x) container_of(x, struct dpu_kms, base)
 141
 142 /**
 143  * Debugfs functions - extra helper functions for debugfs support
 144  *
 145  * Main debugfs documentation is located at,
 146  *
 147  * Documentation/filesystems/debugfs.txt
 148  *
 149  * @dpu_debugfs_setup_regset32: Initialize data for dpu_debugfs_create_regset32
 150  * @dpu_debugfs_create_regset32: Create 32-bit register dump file
 151  * @dpu_debugfs_get_root: Get root dentry for DPU_KMS's debugfs node
 152  */
 153
 154 /**
 155  * Companion structure for dpu_debugfs_create_regset32. Do not initialize the
 156  * members of this structure explicitly; use dpu_debugfs_setup_regset32 instead.
 157  */
 158 struct dpu_debugfs_regset32 {
 159         uint32_t offset;
 160         uint32_t blk_len;
 161         struct dpu_kms *dpu_kms;
 162 };
 163
 164 /**
 165  * dpu_debugfs_setup_regset32 - Initialize register block definition for debugfs
 166  * This function is meant to initialize dpu_debugfs_regset32 structures for use
 167  * with dpu_debugfs_create_regset32.
 168  * @regset: opaque register definition structure
 169  * @offset: sub-block offset
 170  * @length: sub-block length, in bytes
 171  * @dpu_kms: pointer to dpu kms structure
 172  */
 173 void dpu_debugfs_setup_regset32(struct dpu_debugfs_regset32 *regset,
 174                 uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms);
 175
 176 /**
 177  * dpu_debugfs_create_regset32 - Create register read back file for debugfs
 178  *
 179  * This function is almost identical to the standard debugfs_create_regset32()
 180  * function, with the main difference being that a list of register
 181  * names/offsets do not need to be provided. The 'read' function simply outputs
 182  * sequential register values over a specified range.
 183  *
 184  * Similar to the related debugfs_create_regset32 API, the structure pointed to
 185  * by regset needs to persist for the lifetime of the created file. The calling
 186  * code is responsible for initialization/management of this structure.
 187  *
 188  * The structure pointed to by regset is meant to be opaque. Please use
 189  * dpu_debugfs_setup_regset32 to initialize it.
 190  *
 191  * @name:   File name within debugfs
 192  * @mode:   File mode within debugfs
 193  * @parent: Parent directory entry within debugfs, can be NULL
 194  * @regset: Pointer to persistent register block definition
 195  */
 196 void dpu_debugfs_create_regset32(const char *name, umode_t mode,
 197                 void *parent, struct dpu_debugfs_regset32 *regset);
 198
 199 /**
 200  * dpu_debugfs_get_root - Return root directory entry for KMS's debugfs
 201  *
 202  * The return value should be passed as the 'parent' argument to subsequent
 203  * debugfs create calls.
 204  *
 205  * @dpu_kms: Pointer to DPU's KMS structure
 206  *
 207  * Return: dentry pointer for DPU's debugfs location
 208  */
 209 void *dpu_debugfs_get_root(struct dpu_kms *dpu_kms);
 210
 211 /**
 212  * DPU info management functions
 213  * These functions/definitions allow for building up a 'dpu_info' structure
 214  * containing one or more "key=value\n" entries.
 215  */
 216 #define DPU_KMS_INFO_MAX_SIZE   4096
 217
 218 /**
 219  * Vblank enable/disable functions
 220  */
 221 int dpu_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 222 void dpu_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 223
 224 void dpu_kms_encoder_enable(struct drm_encoder *encoder);
 225
 226 /**
 227  * dpu_kms_get_clk_rate() - get the clock rate
 228  * @dpu_kms:  poiner to dpu_kms structure
 229  * @clock_name: clock name to get the rate
 230  *
 231  * Return: current clock rate
 232  */
 233 u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name);
 234
 235 #endif /* __dpu_kms_H__ */