drivers/gpu/drm/msm/msm_kms.h

   1 /*
   2  * Copyright (C) 2013 Red Hat
   3  * Author: Rob Clark <robdclark@gmail.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef __MSM_KMS_H__
  19 #define __MSM_KMS_H__
  20
  21 #include <linux/clk.h>
  22 #include <linux/regulator/consumer.h>
  23
  24 #include "msm_drv.h"
  25
  26 #define MAX_PLANE       4
  27
  28 /* As there are different display controller blocks depending on the
  29  * snapdragon version, the kms support is split out and the appropriate
  30  * implementation is loaded at runtime.  The kms module is responsible
  31  * for constructing the appropriate planes/crtcs/encoders/connectors.
  32  */
  33 struct msm_kms_funcs {
  34         /* hw initialization: */
  35         int (*hw_init)(struct msm_kms *kms);
  36         /* irq handling: */
  37         void (*irq_preinstall)(struct msm_kms *kms);
  38         int (*irq_postinstall)(struct msm_kms *kms);
  39         void (*irq_uninstall)(struct msm_kms *kms);
  40         irqreturn_t (*irq)(struct msm_kms *kms);
  41         int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
  42         void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
  43         /* modeset, bracketing atomic_commit(): */
  44         void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  45         void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
  46         /* functions to wait for atomic commit completed on each CRTC */
  47         void (*wait_for_crtc_commit_done)(struct msm_kms *kms,
  48                                         struct drm_crtc *crtc);
  49         /* misc: */
  50         const struct msm_format *(*get_format)(struct msm_kms *kms, uint32_t format);
  51         long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
  52                         struct drm_encoder *encoder);
  53         int (*set_split_display)(struct msm_kms *kms,
  54                         struct drm_encoder *encoder,
  55                         struct drm_encoder *slave_encoder,
  56                         bool is_cmd_mode);
  57         /* cleanup: */
  58         void (*destroy)(struct msm_kms *kms);
  59 };
  60
  61 struct msm_kms {
  62         const struct msm_kms_funcs *funcs;
  63
  64         /* irq handling: */
  65         bool in_irq;
  66         struct list_head irq_list;    /* list of mdp4_irq */
  67         uint32_t vblank_mask;         /* irq bits set for userspace vblank */
  68 };
  69
  70 static inline void msm_kms_init(struct msm_kms *kms,
  71                 const struct msm_kms_funcs *funcs)
  72 {
  73         kms->funcs = funcs;
  74 }
  75
  76 struct msm_kms *mdp4_kms_init(struct drm_device *dev);
  77 struct msm_kms *mdp5_kms_init(struct drm_device *dev);
  78
  79 #endif /* __MSM_KMS_H__ */