drivers/gpu/drm/msm/msm_kms.h

   1 /*
   2  * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
   3  * Copyright (C) 2013 Red Hat
   4  * Author: Rob Clark <robdclark@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published by
   8  * the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __MSM_KMS_H__
  20 #define __MSM_KMS_H__
  21
  22 #include <linux/clk.h>
  23 #include <linux/regulator/consumer.h>
  24
  25 #include "msm_drv.h"
  26
  27 #define MAX_PLANE       4
  28
  29 /* As there are different display controller blocks depending on the
  30  * snapdragon version, the kms support is split out and the appropriate
  31  * implementation is loaded at runtime.  The kms module is responsible
  32  * for constructing the appropriate planes/crtcs/encoders/connectors.
  33  */
  34 struct msm_kms_funcs {
  35         /* hw initialization: */
  36         int (*hw_init)(struct msm_kms *kms);
  37         /* irq handling: */
  38         void (*irq_preinstall)(struct msm_kms *kms);
  39         int (*irq_postinstall)(struct msm_kms *kms);
  40         void (*irq_uninstall)(struct msm_kms *kms);
  41         irqreturn_t (*irq)(struct msm_kms *kms);
  42         int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
  43         void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
  44         /* modeset, bracketing atomic_commit(): */
  45         void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  46         void (*commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  47         void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  48         /* functions to wait for atomic commit completed on each CRTC */
  49         void (*wait_for_crtc_commit_done)(struct msm_kms *kms,
  50                                         struct drm_crtc *crtc);
  51         /* get msm_format w/ optional format modifiers from drm_mode_fb_cmd2 */
  52         const struct msm_format *(*get_format)(struct msm_kms *kms,
  53                                         const uint32_t format,
  54                                         const uint64_t modifiers);
  55         /* do format checking on format modified through fb_cmd2 modifiers */
  56         int (*check_modified_format)(const struct msm_kms *kms,
  57                         const struct msm_format *msm_fmt,
  58                         const struct drm_mode_fb_cmd2 *cmd,
  59                         struct drm_gem_object **bos);
  60         /* misc: */
  61         long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
  62                         struct drm_encoder *encoder);
  63         int (*set_split_display)(struct msm_kms *kms,
  64                         struct drm_encoder *encoder,
  65                         struct drm_encoder *slave_encoder,
  66                         bool is_cmd_mode);
  67         void (*set_encoder_mode)(struct msm_kms *kms,
  68                                  struct drm_encoder *encoder,
  69                                  bool cmd_mode);
  70         /* pm suspend/resume hooks */
  71         int (*pm_suspend)(struct device *dev);
  72         int (*pm_resume)(struct device *dev);
  73         /* cleanup: */
  74         void (*destroy)(struct msm_kms *kms);
  75 #ifdef CONFIG_DEBUG_FS
  76         /* debugfs: */
  77         int (*debugfs_init)(struct msm_kms *kms, struct drm_minor *minor);
  78 #endif
  79 };
  80
  81 struct msm_kms {
  82         const struct msm_kms_funcs *funcs;
  83
  84         /* irq number to be passed on to drm_irq_install */
  85         int irq;
  86
  87         /* mapper-id used to request GEM buffer mapped for scanout: */
  88         struct msm_gem_address_space *aspace;
  89 };
  90
  91 static inline void msm_kms_init(struct msm_kms *kms,
  92                 const struct msm_kms_funcs *funcs)
  93 {
  94         kms->funcs = funcs;
  95 }
  96
  97 struct msm_kms *mdp4_kms_init(struct drm_device *dev);
  98 struct msm_kms *mdp5_kms_init(struct drm_device *dev);
  99 struct msm_kms *dpu_kms_init(struct drm_device *dev);
 100
 101 struct msm_mdss_funcs {
 102         int (*enable)(struct msm_mdss *mdss);
 103         int (*disable)(struct msm_mdss *mdss);
 104         void (*destroy)(struct drm_device *dev);
 105 };
 106
 107 struct msm_mdss {
 108         struct drm_device *dev;
 109         const struct msm_mdss_funcs *funcs;
 110 };
 111
 112 int mdp5_mdss_init(struct drm_device *dev);
 113 int dpu_mdss_init(struct drm_device *dev);
 114
 115 #endif /* __MSM_KMS_H__ */