drivers/gpu/drm/omapdrm/omap_drv.h

   1 /*
   2  * drivers/gpu/drm/omapdrm/omap_drv.h
   3  *
   4  * Copyright (C) 2011 Texas Instruments
   5  * Author: Rob Clark <rob@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef __OMAP_DRV_H__
  21 #define __OMAP_DRV_H__
  22
  23 #include <linux/module.h>
  24 #include <linux/platform_data/omap_drm.h>
  25 #include <linux/types.h>
  26 #include <linux/wait.h>
  27 #include <video/omapdss.h>
  28
  29 #include <drm/drmP.h>
  30 #include <drm/drm_crtc_helper.h>
  31 #include <drm/drm_gem.h>
  32 #include <drm/omap_drm.h>
  33
  34 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  35 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt, ##__VA_ARGS__) /* verbose debug */
  36
  37 #define MODULE_NAME     "omapdrm"
  38
  39 /* max # of mapper-id's that can be assigned.. todo, come up with a better
  40  * (but still inexpensive) way to store/access per-buffer mapper private
  41  * data..
  42  */
  43 #define MAX_MAPPERS 2
  44
  45 /* parameters which describe (unrotated) coordinates of scanout within a fb: */
  46 struct omap_drm_window {
  47         uint32_t rotation;
  48         int32_t  crtc_x, crtc_y;                /* signed because can be offscreen */
  49         uint32_t crtc_w, crtc_h;
  50         uint32_t src_x, src_y;
  51         uint32_t src_w, src_h;
  52 };
  53
  54 /* For transiently registering for different DSS irqs that various parts
  55  * of the KMS code need during setup/configuration.  We these are not
  56  * necessarily the same as what drm_vblank_get/put() are requesting, and
  57  * the hysteresis in drm_vblank_put() is not necessarily desirable for
  58  * internal housekeeping related irq usage.
  59  */
  60 struct omap_drm_irq {
  61         struct list_head node;
  62         uint32_t irqmask;
  63         bool registered;
  64         void (*irq)(struct omap_drm_irq *irq, uint32_t irqstatus);
  65 };
  66
  67 /* For KMS code that needs to wait for a certain # of IRQs:
  68  */
  69 struct omap_irq_wait;
  70 struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev,
  71                 uint32_t irqmask, int count);
  72 int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
  73                 unsigned long timeout);
  74
  75 struct omap_drm_private {
  76         uint32_t omaprev;
  77
  78         unsigned int num_crtcs;
  79         struct drm_crtc *crtcs[8];
  80
  81         unsigned int num_planes;
  82         struct drm_plane *planes[8];
  83
  84         unsigned int num_encoders;
  85         struct drm_encoder *encoders[8];
  86
  87         unsigned int num_connectors;
  88         struct drm_connector *connectors[8];
  89
  90         struct drm_fb_helper *fbdev;
  91
  92         struct workqueue_struct *wq;
  93
  94         /* lock for obj_list below */
  95         spinlock_t list_lock;
  96
  97         /* list of GEM objects: */
  98         struct list_head obj_list;
  99
 100         bool has_dmm;
 101
 102         /* properties: */
 103         struct drm_property *zorder_prop;
 104
 105         /* irq handling: */
 106         struct list_head irq_list;    /* list of omap_drm_irq */
 107         uint32_t vblank_mask;         /* irq bits set for userspace vblank */
 108         struct omap_drm_irq error_handler;
 109
 110         /* atomic commit */
 111         struct {
 112                 struct list_head events;
 113                 wait_queue_head_t wait;
 114                 u32 pending;
 115                 spinlock_t lock;        /* Protects commit.pending */
 116         } commit;
 117 };
 118
 119
 120 #ifdef CONFIG_DEBUG_FS
 121 int omap_debugfs_init(struct drm_minor *minor);
 122 void omap_debugfs_cleanup(struct drm_minor *minor);
 123 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m);
 124 void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
 125 void omap_gem_describe_objects(struct list_head *list, struct seq_file *m);
 126 #endif
 127
 128 #ifdef CONFIG_PM
 129 int omap_gem_resume(struct device *dev);
 130 #endif
 131
 132 int omap_irq_enable_vblank(struct drm_device *dev, unsigned int pipe);
 133 void omap_irq_disable_vblank(struct drm_device *dev, unsigned int pipe);
 134 void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 135 void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 136 void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 137 void omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 138 void omap_drm_irq_uninstall(struct drm_device *dev);
 139 int omap_drm_irq_install(struct drm_device *dev);
 140
 141 struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev);
 142 void omap_fbdev_free(struct drm_device *dev);
 143
 144 struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc);
 145 enum omap_channel omap_crtc_channel(struct drm_crtc *crtc);
 146 void omap_crtc_pre_init(void);
 147 void omap_crtc_pre_uninit(void);
 148 struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 149                 struct drm_plane *plane, enum omap_channel channel, int id);
 150 int omap_crtc_wait_pending(struct drm_crtc *crtc);
 151
 152 struct drm_plane *omap_plane_init(struct drm_device *dev,
 153                 int id, enum drm_plane_type type);
 154 void omap_plane_install_properties(struct drm_plane *plane,
 155                 struct drm_mode_object *obj);
 156
 157 struct drm_encoder *omap_encoder_init(struct drm_device *dev,
 158                 struct omap_dss_device *dssdev);
 159
 160 struct drm_connector *omap_connector_init(struct drm_device *dev,
 161                 int connector_type, struct omap_dss_device *dssdev,
 162                 struct drm_encoder *encoder);
 163 struct drm_encoder *omap_connector_attached_encoder(
 164                 struct drm_connector *connector);
 165 bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
 166
 167 void copy_timings_omap_to_drm(struct drm_display_mode *mode,
 168                 struct omap_video_timings *timings);
 169 void copy_timings_drm_to_omap(struct omap_video_timings *timings,
 170                 struct drm_display_mode *mode);
 171
 172 uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
 173                 uint32_t max_formats, enum omap_color_mode supported_modes);
 174 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
 175                 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd);
 176 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
 177                 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
 178 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p);
 179 int omap_framebuffer_pin(struct drm_framebuffer *fb);
 180 void omap_framebuffer_unpin(struct drm_framebuffer *fb);
 181 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 182                 struct omap_drm_window *win, struct omap_overlay_info *info);
 183 struct drm_connector *omap_framebuffer_get_next_connector(
 184                 struct drm_framebuffer *fb, struct drm_connector *from);
 185
 186 void omap_gem_init(struct drm_device *dev);
 187 void omap_gem_deinit(struct drm_device *dev);
 188
 189 struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 190                 union omap_gem_size gsize, uint32_t flags);
 191 int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file,
 192                 union omap_gem_size gsize, uint32_t flags, uint32_t *handle);
 193 void omap_gem_free_object(struct drm_gem_object *obj);
 194 void *omap_gem_vaddr(struct drm_gem_object *obj);
 195 int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
 196                 uint32_t handle, uint64_t *offset);
 197 int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
 198                 struct drm_mode_create_dumb *args);
 199 int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 200 int omap_gem_mmap_obj(struct drm_gem_object *obj,
 201                 struct vm_area_struct *vma);
 202 int omap_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 203 int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op);
 204 int omap_gem_op_finish(struct drm_gem_object *obj, enum omap_gem_op op);
 205 int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op);
 206 int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op,
 207                 void (*fxn)(void *arg), void *arg);
 208 int omap_gem_roll(struct drm_gem_object *obj, uint32_t roll);
 209 void omap_gem_cpu_sync(struct drm_gem_object *obj, int pgoff);
 210 void omap_gem_dma_sync(struct drm_gem_object *obj,
 211                 enum dma_data_direction dir);
 212 int omap_gem_get_paddr(struct drm_gem_object *obj,
 213                 dma_addr_t *paddr, bool remap);
 214 void omap_gem_put_paddr(struct drm_gem_object *obj);
 215 int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
 216                 bool remap);
 217 int omap_gem_put_pages(struct drm_gem_object *obj);
 218 uint32_t omap_gem_flags(struct drm_gem_object *obj);
 219 int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
 220                 int x, int y, dma_addr_t *paddr);
 221 uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
 222 size_t omap_gem_mmap_size(struct drm_gem_object *obj);
 223 int omap_gem_tiled_size(struct drm_gem_object *obj, uint16_t *w, uint16_t *h);
 224 int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient);
 225
 226 struct dma_buf *omap_gem_prime_export(struct drm_device *dev,
 227                 struct drm_gem_object *obj, int flags);
 228 struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
 229                 struct dma_buf *buffer);
 230
 231 static inline int align_pitch(int pitch, int width, int bpp)
 232 {
 233         int bytespp = (bpp + 7) / 8;
 234         /* in case someone tries to feed us a completely bogus stride: */
 235         pitch = max(pitch, width * bytespp);
 236         /* PVR needs alignment to 8 pixels.. right now that is the most
 237          * restrictive stride requirement..
 238          */
 239         return roundup(pitch, 8 * bytespp);
 240 }
 241
 242 /* map crtc to vblank mask */
 243 uint32_t pipe2vbl(struct drm_crtc *crtc);
 244 struct omap_dss_device *omap_encoder_get_dssdev(struct drm_encoder *encoder);
 245
 246 /* should these be made into common util helpers?
 247  */
 248
 249 static inline int objects_lookup(struct drm_device *dev,
 250                 struct drm_file *filp, uint32_t pixel_format,
 251                 struct drm_gem_object **bos, uint32_t *handles)
 252 {
 253         int i, n = drm_format_num_planes(pixel_format);
 254
 255         for (i = 0; i < n; i++) {
 256                 bos[i] = drm_gem_object_lookup(dev, filp, handles[i]);
 257                 if (!bos[i])
 258                         goto fail;
 259
 260         }
 261
 262         return 0;
 263
 264 fail:
 265         while (--i > 0)
 266                 drm_gem_object_unreference_unlocked(bos[i]);
 267
 268         return -ENOENT;
 269 }
 270
 271 #endif /* __OMAP_DRV_H__ */