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

   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 */
  33struct 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
  61struct msm_kms {
  62        const struct msm_kms_funcs *funcs;
  63
  64        /* irq number to be passed on to drm_irq_install */
  65        int irq;
  66};
  67
  68static inline void msm_kms_init(struct msm_kms *kms,
  69                const struct msm_kms_funcs *funcs)
  70{
  71        kms->funcs = funcs;
  72}
  73
  74struct msm_kms *mdp4_kms_init(struct drm_device *dev);
  75struct msm_kms *mdp5_kms_init(struct drm_device *dev);
  76int msm_mdss_init(struct drm_device *dev);
  77void msm_mdss_destroy(struct drm_device *dev);
  78
  79#endif /* __MSM_KMS_H__ */
  80