LXR linux/drivers/gpu/drm/msm/msm

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
   4 * Copyright (C) 2013 Red Hat
   5 * Author: Rob Clark <robdclark@gmail.com>
   6 */
   7
   8#ifndef __MSM_KMS_H__
   9#define __MSM_KMS_H__
  10
  11#include <linux/clk.h>
  12#include <linux/regulator/consumer.h>
  13
  14#include "msm_drv.h"
  15
  16#define MAX_PLANE       4
  17
  18/* As there are different display controller blocks depending on the
  19 * snapdragon version, the kms support is split out and the appropriate
  20 * implementation is loaded at runtime.  The kms module is responsible
  21 * for constructing the appropriate planes/crtcs/encoders/connectors.
  22 */
  23struct msm_kms_funcs {
  24        /* hw initialization: */
  25        int (*hw_init)(struct msm_kms *kms);
  26        /* irq handling: */
  27        void (*irq_preinstall)(struct msm_kms *kms);
  28        int (*irq_postinstall)(struct msm_kms *kms);
  29        void (*irq_uninstall)(struct msm_kms *kms);
  30        irqreturn_t (*irq)(struct msm_kms *kms);
  31        int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
  32        void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
  33        /* modeset, bracketing atomic_commit(): */
  34        void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  35        void (*commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  36        void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  37        /* functions to wait for atomic commit completed on each CRTC */
  38        void (*wait_for_crtc_commit_done)(struct msm_kms *kms,
  39                                        struct drm_crtc *crtc);
  40        /* get msm_format w/ optional format modifiers from drm_mode_fb_cmd2 */
  41        const struct msm_format *(*get_format)(struct msm_kms *kms,
  42                                        const uint32_t format,
  43                                        const uint64_t modifiers);
  44        /* do format checking on format modified through fb_cmd2 modifiers */
  45        int (*check_modified_format)(const struct msm_kms *kms,
  46                        const struct msm_format *msm_fmt,
  47                        const struct drm_mode_fb_cmd2 *cmd,
  48                        struct drm_gem_object **bos);
  49        /* misc: */
  50        long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
  51                        struct drm_encoder *encoder);
  52        int (*set_split_display)(struct msm_kms *kms,
  53                        struct drm_encoder *encoder,
  54                        struct drm_encoder *slave_encoder,
  55                        bool is_cmd_mode);
  56        void (*set_encoder_mode)(struct msm_kms *kms,
  57                                 struct drm_encoder *encoder,
  58                                 bool cmd_mode);
  59        /* cleanup: */
  60        void (*destroy)(struct msm_kms *kms);
  61#ifdef CONFIG_DEBUG_FS
  62        /* debugfs: */
  63        int (*debugfs_init)(struct msm_kms *kms, struct drm_minor *minor);
  64#endif
  65};
  66
  67struct msm_kms {
  68        const struct msm_kms_funcs *funcs;
  69
  70        /* irq number to be passed on to drm_irq_install */
  71        int irq;
  72
  73        /* mapper-id used to request GEM buffer mapped for scanout: */
  74        struct msm_gem_address_space *aspace;
  75};
  76
  77static inline void msm_kms_init(struct msm_kms *kms,
  78                const struct msm_kms_funcs *funcs)
  79{
  80        kms->funcs = funcs;
  81}
  82
  83struct msm_kms *mdp4_kms_init(struct drm_device *dev);
  84struct msm_kms *mdp5_kms_init(struct drm_device *dev);
  85struct msm_kms *dpu_kms_init(struct drm_device *dev);
  86
  87struct msm_mdss_funcs {
  88        int (*enable)(struct msm_mdss *mdss);
  89        int (*disable)(struct msm_mdss *mdss);
  90        void (*destroy)(struct drm_device *dev);
  91};
  92
  93struct msm_mdss {
  94        struct drm_device *dev;
  95        const struct msm_mdss_funcs *funcs;
  96};
  97
  98int mdp5_mdss_init(struct drm_device *dev);
  99int dpu_mdss_init(struct drm_device *dev);
 100
 101#endif /* __MSM_KMS_H__ */
 102