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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 Hat5 * Author: Rob Clark <robdclark@gmail.com>6 */7 8#ifndef __DPU_KMS_H__9#define __DPU_KMS_H__10 11#include <linux/interconnect.h>12 13#include <drm/drm_drv.h>14 15#include "msm_drv.h"16#include "msm_kms.h"17#include "msm_mmu.h"18#include "msm_gem.h"19#include "dpu_hw_catalog.h"20#include "dpu_hw_ctl.h"21#include "dpu_hw_lm.h"22#include "dpu_hw_interrupts.h"23#include "dpu_hw_top.h"24#include "dpu_rm.h"25#include "dpu_core_perf.h"26 27#define DRMID(x) ((x) ? (x)->base.id : -1)28 29/**30 * DPU_DEBUG - macro for kms/plane/crtc/encoder/connector logs31 * @fmt: Pointer to format string32 */33#define DPU_DEBUG(fmt, ...) \34 DRM_DEBUG_DRIVER(fmt, ##__VA_ARGS__)35 36/**37 * DPU_DEBUG_DRIVER - macro for hardware driver logging38 * @fmt: Pointer to format string39 */40#define DPU_DEBUG_DRIVER(fmt, ...) \41 DRM_DEBUG_DRIVER(fmt, ##__VA_ARGS__)42 43#define DPU_ERROR(fmt, ...) pr_err("[dpu error]" fmt, ##__VA_ARGS__)44#define DPU_ERROR_RATELIMITED(fmt, ...) pr_err_ratelimited("[dpu error]" fmt, ##__VA_ARGS__)45 46/**47 * ktime_compare_safe - compare two ktime structures48 * This macro is similar to the standard ktime_compare() function, but49 * attempts to also handle ktime overflows.50 * @A: First ktime value51 * @B: Second ktime value52 * Returns: -1 if A < B, 0 if A == B, 1 if A > B53 */54#define ktime_compare_safe(A, B) \55 ktime_compare(ktime_sub((A), (B)), ktime_set(0, 0))56 57struct dpu_kms {58 struct msm_kms base;59 struct drm_device *dev;60 const struct dpu_mdss_cfg *catalog;61 const struct msm_mdss_data *mdss;62 63 /* io/register spaces: */64 void __iomem *mmio, *vbif[VBIF_MAX];65 66 struct regulator *vdd;67 struct regulator *mmagic;68 struct regulator *venus;69 70 struct dpu_hw_intr *hw_intr;71 72 struct dpu_core_perf perf;73 74 /*75 * Global private object state, Do not access directly, use76 * dpu_kms_global_get_state()77 */78 struct drm_private_obj global_state;79 80 struct dpu_rm rm;81 82 struct dpu_hw_vbif *hw_vbif[VBIF_MAX];83 struct dpu_hw_mdp *hw_mdp;84 85 bool has_danger_ctrl;86 87 struct platform_device *pdev;88 bool rpm_enabled;89 90 struct clk_bulk_data *clocks;91 size_t num_clocks;92 93 /* reference count bandwidth requests, so we know when we can94 * release bandwidth. Each atomic update increments, and frame-95 * done event decrements. Additionally, for video mode, the96 * reference is incremented when crtc is enabled, and decremented97 * when disabled.98 */99 atomic_t bandwidth_ref;100 struct icc_path *path[2];101 u32 num_paths;102};103 104struct vsync_info {105 u32 frame_count;106 u32 line_count;107};108 109#define DPU_ENC_WR_PTR_START_TIMEOUT_US 20000110 111#define DPU_ENC_MAX_POLL_TIMEOUT_US 2000112 113#define to_dpu_kms(x) container_of(x, struct dpu_kms, base)114 115#define to_dpu_global_state(x) container_of(x, struct dpu_global_state, base)116 117/* Global private object state for tracking resources that are shared across118 * multiple kms objects (planes/crtcs/etc).119 */120struct dpu_global_state {121 struct drm_private_state base;122 123 struct dpu_rm *rm;124 125 uint32_t pingpong_to_enc_id[PINGPONG_MAX - PINGPONG_0];126 uint32_t mixer_to_enc_id[LM_MAX - LM_0];127 uint32_t ctl_to_enc_id[CTL_MAX - CTL_0];128 uint32_t dspp_to_enc_id[DSPP_MAX - DSPP_0];129 uint32_t dsc_to_enc_id[DSC_MAX - DSC_0];130 uint32_t cdm_to_enc_id;131};132 133struct dpu_global_state134 *dpu_kms_get_existing_global_state(struct dpu_kms *dpu_kms);135struct dpu_global_state136 *__must_check dpu_kms_get_global_state(struct drm_atomic_state *s);137 138/**139 * Debugfs functions - extra helper functions for debugfs support140 *141 * Main debugfs documentation is located at,142 *143 * Documentation/filesystems/debugfs.rst144 *145 * @dpu_debugfs_create_regset32: Create 32-bit register dump file146 */147 148/**149 * dpu_debugfs_create_regset32 - Create register read back file for debugfs150 *151 * This function is almost identical to the standard debugfs_create_regset32()152 * function, with the main difference being that a list of register153 * names/offsets do not need to be provided. The 'read' function simply outputs154 * sequential register values over a specified range.155 *156 * @name: File name within debugfs157 * @mode: File mode within debugfs158 * @parent: Parent directory entry within debugfs, can be NULL159 * @offset: sub-block offset160 * @length: sub-block length, in bytes161 * @dpu_kms: pointer to dpu kms structure162 */163void dpu_debugfs_create_regset32(const char *name, umode_t mode,164 void *parent,165 uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms);166 167/**168 * dpu_debugfs_get_root - Return root directory entry for KMS's debugfs169 *170 * The return value should be passed as the 'parent' argument to subsequent171 * debugfs create calls.172 *173 * @dpu_kms: Pointer to DPU's KMS structure174 *175 * Return: dentry pointer for DPU's debugfs location176 */177void *dpu_debugfs_get_root(struct dpu_kms *dpu_kms);178 179/**180 * DPU info management functions181 * These functions/definitions allow for building up a 'dpu_info' structure182 * containing one or more "key=value\n" entries.183 */184#define DPU_KMS_INFO_MAX_SIZE 4096185 186/**187 * Vblank enable/disable functions188 */189int dpu_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);190void dpu_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);191 192/**193 * dpu_kms_get_clk_rate() - get the clock rate194 * @dpu_kms: pointer to dpu_kms structure195 * @clock_name: clock name to get the rate196 *197 * Return: current clock rate198 */199unsigned long dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name);200 201#endif /* __dpu_kms_H__ */202