text: /*
   * drivers/staging/omapdrm/omap_drv.h
   *
   * Copyright (C) 2011 Texas Instruments
   * Author: Rob Clark <rob@ti.com>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published by
   * the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  #ifndef __OMAP_DRV_H__
  #define __OMAP_DRV_H__
  
  #include <video/omapdss.h>
  #include <linux/module.h>
  #include <linux/types.h>
  #include <drm/drmP.h>
  #include <drm/drm_crtc_helper.h>
  #include "omap_drm.h"
  #include "omap_priv.h"
  
  #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt, ##__VA_ARGS__) /* verbose debug */
  
  #define MODULE_NAME     "omapdrm"
  
  /* max # of mapper-id's that can be assigned.. todo, come up with a better
   * (but still inexpensive) way to store/access per-buffer mapper private
   * data..
   */
  #define MAX_MAPPERS 2
  
  struct omap_drm_private {
  	unsigned int num_crtcs;
  	struct drm_crtc *crtcs[8];
  
  	unsigned int num_planes;
  	struct drm_plane *planes[8];
  
  	unsigned int num_encoders;
  	struct drm_encoder *encoders[8];
  
  	unsigned int num_connectors;
  	struct drm_connector *connectors[8];
  
  	struct drm_fb_helper *fbdev;
  
  	struct workqueue_struct *wq;
  
  	struct list_head obj_list;
  
  	bool has_dmm;
  };
  
  #ifdef CONFIG_DEBUG_FS
  int omap_debugfs_init(struct drm_minor *minor);
  void omap_debugfs_cleanup(struct drm_minor *minor);
  void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m);
  void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
  void omap_gem_describe_objects(struct list_head *list, struct seq_file *m);
  #endif
  
  struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev);
  void omap_fbdev_free(struct drm_device *dev);
  
  struct drm_crtc *omap_crtc_init(struct drm_device *dev,
  		struct omap_overlay *ovl, int id);
  
  struct drm_plane *omap_plane_init(struct drm_device *dev,
  		struct omap_overlay *ovl, unsigned int possible_crtcs,
  		bool priv);
  int omap_plane_dpms(struct drm_plane *plane, int mode);
  int omap_plane_mode_set(struct drm_plane *plane,
  		struct drm_crtc *crtc, struct drm_framebuffer *fb,
  		int crtc_x, int crtc_y,
  		unsigned int crtc_w, unsigned int crtc_h,
  		uint32_t src_x, uint32_t src_y,
  		uint32_t src_w, uint32_t src_h);
  void omap_plane_on_endwin(struct drm_plane *plane,
  		void (*fxn)(void *), void *arg);
  
  struct drm_encoder *omap_encoder_init(struct drm_device *dev,
  		struct omap_overlay_manager *mgr);
  struct omap_overlay_manager *omap_encoder_get_manager(
  		struct drm_encoder *encoder);
  struct drm_encoder *omap_connector_attached_encoder(
  		struct drm_connector *connector);
  enum drm_connector_status omap_connector_detect(
  		struct drm_connector *connector, bool force);
  
  struct drm_connector *omap_connector_init(struct drm_device *dev,
  		int connector_type, struct omap_dss_device *dssdev);
  void omap_connector_mode_set(struct drm_connector *connector,
  		struct drm_display_mode *mode);
  void omap_connector_flush(struct drm_connector *connector,
  		int x, int y, int w, int h);
  
  uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
  		uint32_t max_formats, enum omap_color_mode supported_modes);
  struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
  		struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd);
  struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
  		struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
  struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p);
  int omap_framebuffer_replace(struct drm_framebuffer *a,
  		struct drm_framebuffer *b, void *arg,
  		void (*unpin)(void *arg, struct drm_gem_object *bo));
  void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, int x, int y,
  		struct omap_overlay_info *info);
  struct drm_connector *omap_framebuffer_get_next_connector(
  		struct drm_framebuffer *fb, struct drm_connector *from);
  void omap_framebuffer_flush(struct drm_framebuffer *fb,
  		int x, int y, int w, int h);
  
  void omap_gem_init(struct drm_device *dev);
  void omap_gem_deinit(struct drm_device *dev);
  
  struct drm_gem_object *omap_gem_new(struct drm_device *dev,
  		union omap_gem_size gsize, uint32_t flags);
  int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file,
  		union omap_gem_size gsize, uint32_t flags, uint32_t *handle);
  void omap_gem_free_object(struct drm_gem_object *obj);
  int omap_gem_init_object(struct drm_gem_object *obj);
  void *omap_gem_vaddr(struct drm_gem_object *obj);
  int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
  		uint32_t handle, uint64_t *offset);
  int omap_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev,
  		uint32_t handle);
  int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
  		struct drm_mode_create_dumb *args);
  int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma);
  int omap_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
  int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op);
  int omap_gem_op_finish(struct drm_gem_object *obj, enum omap_gem_op op);
  int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op);
  int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op,
  		void (*fxn)(void *arg), void *arg);
  int omap_gem_roll(struct drm_gem_object *obj, uint32_t roll);
  int omap_gem_get_paddr(struct drm_gem_object *obj,
  		dma_addr_t *paddr, bool remap);
  int omap_gem_put_paddr(struct drm_gem_object *obj);
  uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
  size_t omap_gem_mmap_size(struct drm_gem_object *obj);
  
  static inline int align_pitch(int pitch, int width, int bpp)
  {
  	int bytespp = (bpp + 7) / 8;
  	/* in case someone tries to feed us a completely bogus stride: */
  	pitch = max(pitch, width * bytespp);
  	/* PVR needs alignment to 8 pixels.. right now that is the most
  	 * restrictive stride requirement..
  	 */
  	return ALIGN(pitch, 8 * bytespp);
  }
  
  /* should these be made into common util helpers?
   */
  
  static inline int objects_lookup(struct drm_device *dev,
  		struct drm_file *filp, uint32_t pixel_format,
  		struct drm_gem_object **bos, uint32_t *handles)
  {
  	int i, n = drm_format_num_planes(pixel_format);
  
  	for (i = 0; i < n; i++) {
  		bos[i] = drm_gem_object_lookup(dev, filp, handles[i]);
  		if (!bos[i]) {
  			goto fail;
  		}
  	}
  
  	return 0;
  
  fail:
  	while (--i > 0) {
  		drm_gem_object_unreference_unlocked(bos[i]);
  	}
  	return -ENOENT;
  }
  
  #endif /* __OMAP_DRV_H__ */
  