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 <video/omapdss.h>
  24 #include <linux/module.h>
  25 #include <linux/types.h>
  26 #include <drm/drmP.h>
  27 #include <drm/drm_crtc_helper.h>
  28 #include <drm/omap_drm.h>
  29 #include <drm/drm_gem.h>
  30 #include <linux/platform_data/omap_drm.h>
  31
  32
  33 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  34 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt, ##__VA_ARGS__) /* verbose debug */
  35
  36 #define MODULE_NAME     "omapdrm"
  37
  38 /* max # of mapper-id's that can be assigned.. todo, come up with a better
  39  * (but still inexpensive) way to store/access per-buffer mapper private
  40  * data..
  41  */
  42 #define MAX_MAPPERS 2
  43
  44 /* parameters which describe (unrotated) coordinates of scanout within a fb: */
  45 struct omap_drm_window {
  46         uint32_t rotation;
  47         int32_t  crtc_x, crtc_y;                /* signed because can be offscreen */
  48         uint32_t crtc_w, crtc_h;
  49         uint32_t src_x, src_y;
  50         uint32_t src_w, src_h;
  51 };
  52
  53 /* Once GO bit is set, we can't make further updates to shadowed registers
  54  * until the GO bit is cleared.  So various parts in the kms code that need
  55  * to update shadowed registers queue up a pair of callbacks, pre_apply
  56  * which is called before setting GO bit, and post_apply that is called
  57  * after GO bit is cleared.  The crtc manages the queuing, and everyone
  58  * else goes thru omap_crtc_apply() using these callbacks so that the
  59  * code which has to deal w/ GO bit state is centralized.
  60  */
  61 struct omap_drm_apply {
  62         struct list_head pending_node, queued_node;
  63         bool queued;
  64         void (*pre_apply)(struct omap_drm_apply *apply);
  65         void (*post_apply)(struct omap_drm_apply *apply);
  66 };
  67
  68 /* For transiently registering for different DSS irqs that various parts
  69  * of the KMS code need during setup/configuration.  We these are not
  70  * necessarily the same as what drm_vblank_get/put() are requesting, and
  71  * the hysteresis in drm_vblank_put() is not necessarily desirable for
  72  * internal housekeeping related irq usage.
  73  */
  74 struct omap_drm_irq {
  75         struct list_head node;
  76         uint32_t irqmask;
  77         bool registered;
  78         void (*irq)(struct omap_drm_irq *irq, uint32_t irqstatus);
  79 };
  80
  81 /* For KMS code that needs to wait for a certain # of IRQs:
  82  */
  83 struct omap_irq_wait;
  84 struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev,
  85                 uint32_t irqmask, int count);
  86 int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
  87                 unsigned long timeout);
  88
  89 struct omap_drm_private {
  90         uint32_t omaprev;
  91
  92         unsigned int num_crtcs;
  93         struct drm_crtc *crtcs[8];
  94
  95         unsigned int num_planes;
  96         struct drm_plane *planes[8];
  97
  98         unsigned int num_encoders;
  99         struct drm_encoder *encoders[8];
 100
 101         unsigned int num_connectors;
 102         struct drm_connector *connectors[8];
 103
 104         struct drm_fb_helper *fbdev;
 105
 106         struct workqueue_struct *wq;
 107
 108         /* list of GEM objects: */
 109         struct list_head obj_list;
 110
 111         bool has_dmm;
 112
 113         /* properties: */
 114         struct drm_property *rotation_prop;
 115         struct drm_property *zorder_prop;
 116
 117         /* irq handling: */
 118         struct list_head irq_list;    /* list of omap_drm_irq */
 119         uint32_t vblank_mask;         /* irq bits set for userspace vblank */
 120         struct omap_drm_irq error_handler;
 121 };
 122
 123
 124 #ifdef CONFIG_DEBUG_FS
 125 int omap_debugfs_init(struct drm_minor *minor);
 126 void omap_debugfs_cleanup(struct drm_minor *minor);
 127 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m);
 128 void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
 129 void omap_gem_describe_objects(struct list_head *list, struct seq_file *m);
 130 #endif
 131
 132 #ifdef CONFIG_PM
 133 int omap_gem_resume(struct device *dev);
 134 #endif
 135
 136 int omap_irq_enable_vblank(struct drm_device *dev, int crtc_id);
 137 void omap_irq_disable_vblank(struct drm_device *dev, int crtc_id);
 138 irqreturn_t omap_irq_handler(int irq, void *arg);
 139 void omap_irq_preinstall(struct drm_device *dev);
 140 int omap_irq_postinstall(struct drm_device *dev);
 141 void omap_irq_uninstall(struct drm_device *dev);
 142 void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 143 void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 144 void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 145 void omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 146 int omap_drm_irq_uninstall(struct drm_device *dev);
 147 int omap_drm_irq_install(struct drm_device *dev);
 148
 149 struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev);
 150 void omap_fbdev_free(struct drm_device *dev);
 151
 152 const struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc);
 153 enum omap_channel omap_crtc_channel(struct drm_crtc *crtc);
 154 int omap_crtc_apply(struct drm_crtc *crtc,
 155                 struct omap_drm_apply *apply);
 156 void omap_crtc_pre_init(void);
 157 void omap_crtc_pre_uninit(void);
 158 struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 159                 struct drm_plane *plane, enum omap_channel channel, int id);
 160 void omap_crtc_flush(struct drm_crtc *crtc);
 161
 162 struct drm_plane *omap_plane_init(struct drm_device *dev,
 163                 int plane_id, bool private_plane);
 164 int omap_plane_dpms(struct drm_plane *plane, int mode);
 165 int omap_plane_mode_set(struct drm_plane *plane,
 166                 struct drm_crtc *crtc, struct drm_framebuffer *fb,
 167                 int crtc_x, int crtc_y,
 168                 unsigned int crtc_w, unsigned int crtc_h,
 169                 uint32_t src_x, uint32_t src_y,
 170                 uint32_t src_w, uint32_t src_h,
 171                 void (*fxn)(void *), void *arg);
 172 void omap_plane_install_properties(struct drm_plane *plane,
 173                 struct drm_mode_object *obj);
 174 int omap_plane_set_property(struct drm_plane *plane,
 175                 struct drm_property *property, uint64_t val);
 176
 177 struct drm_encoder *omap_encoder_init(struct drm_device *dev,
 178                 struct omap_dss_device *dssdev);
 179 int omap_encoder_set_enabled(struct drm_encoder *encoder, bool enabled);
 180 int omap_encoder_update(struct drm_encoder *encoder,
 181                 struct omap_overlay_manager *mgr,
 182                 struct omap_video_timings *timings);
 183
 184 struct drm_connector *omap_connector_init(struct drm_device *dev,
 185                 int connector_type, struct omap_dss_device *dssdev,
 186                 struct drm_encoder *encoder);
 187 struct drm_encoder *omap_connector_attached_encoder(
 188                 struct drm_connector *connector);
 189 void omap_connector_flush(struct drm_connector *connector,
 190                 int x, int y, int w, int h);
 191 bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
 192
 193 void copy_timings_omap_to_drm(struct drm_display_mode *mode,
 194                 struct omap_video_timings *timings);
 195 void copy_timings_drm_to_omap(struct omap_video_timings *timings,
 196                 struct drm_display_mode *mode);
 197
 198 uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
 199                 uint32_t max_formats, enum omap_color_mode supported_modes);
 200 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
 201                 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd);
 202 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
 203                 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
 204 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p);
 205 int omap_framebuffer_pin(struct drm_framebuffer *fb);
 206 int omap_framebuffer_unpin(struct drm_framebuffer *fb);
 207 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 208                 struct omap_drm_window *win, struct omap_overlay_info *info);
 209 struct drm_connector *omap_framebuffer_get_next_connector(
 210                 struct drm_framebuffer *fb, struct drm_connector *from);
 211 void omap_framebuffer_flush(struct drm_framebuffer *fb,
 212                 int x, int y, int w, int h);
 213
 214 void omap_gem_init(struct drm_device *dev);
 215 void omap_gem_deinit(struct drm_device *dev);
 216
 217 struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 218                 union omap_gem_size gsize, uint32_t flags);
 219 int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file,
 220                 union omap_gem_size gsize, uint32_t flags, uint32_t *handle);
 221 void omap_gem_free_object(struct drm_gem_object *obj);
 222 void *omap_gem_vaddr(struct drm_gem_object *obj);
 223 int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
 224                 uint32_t handle, uint64_t *offset);
 225 int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
 226                 struct drm_mode_create_dumb *args);
 227 int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 228 int omap_gem_mmap_obj(struct drm_gem_object *obj,
 229                 struct vm_area_struct *vma);
 230 int omap_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 231 int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op);
 232 int omap_gem_op_finish(struct drm_gem_object *obj, enum omap_gem_op op);
 233 int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op);
 234 int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op,
 235                 void (*fxn)(void *arg), void *arg);
 236 int omap_gem_roll(struct drm_gem_object *obj, uint32_t roll);
 237 void omap_gem_cpu_sync(struct drm_gem_object *obj, int pgoff);
 238 void omap_gem_dma_sync(struct drm_gem_object *obj,
 239                 enum dma_data_direction dir);
 240 int omap_gem_get_paddr(struct drm_gem_object *obj,
 241                 dma_addr_t *paddr, bool remap);
 242 int omap_gem_put_paddr(struct drm_gem_object *obj);
 243 int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
 244                 bool remap);
 245 int omap_gem_put_pages(struct drm_gem_object *obj);
 246 uint32_t omap_gem_flags(struct drm_gem_object *obj);
 247 int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
 248                 int x, int y, dma_addr_t *paddr);
 249 uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
 250 size_t omap_gem_mmap_size(struct drm_gem_object *obj);
 251 int omap_gem_tiled_size(struct drm_gem_object *obj, uint16_t *w, uint16_t *h);
 252 int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient);
 253
 254 struct dma_buf *omap_gem_prime_export(struct drm_device *dev,
 255                 struct drm_gem_object *obj, int flags);
 256 struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
 257                 struct dma_buf *buffer);
 258
 259 static inline int align_pitch(int pitch, int width, int bpp)
 260 {
 261         int bytespp = (bpp + 7) / 8;
 262         /* in case someone tries to feed us a completely bogus stride: */
 263         pitch = max(pitch, width * bytespp);
 264         /* PVR needs alignment to 8 pixels.. right now that is the most
 265          * restrictive stride requirement..
 266          */
 267         return ALIGN(pitch, 8 * bytespp);
 268 }
 269
 270 /* map crtc to vblank mask */
 271 uint32_t pipe2vbl(struct drm_crtc *crtc);
 272 struct omap_dss_device *omap_encoder_get_dssdev(struct drm_encoder *encoder);
 273
 274 /* should these be made into common util helpers?
 275  */
 276
 277 static inline int objects_lookup(struct drm_device *dev,
 278                 struct drm_file *filp, uint32_t pixel_format,
 279                 struct drm_gem_object **bos, uint32_t *handles)
 280 {
 281         int i, n = drm_format_num_planes(pixel_format);
 282
 283         for (i = 0; i < n; i++) {
 284                 bos[i] = drm_gem_object_lookup(dev, filp, handles[i]);
 285                 if (!bos[i])
 286                         goto fail;
 287
 288         }
 289
 290         return 0;
 291
 292 fail:
 293         while (--i > 0)
 294                 drm_gem_object_unreference_unlocked(bos[i]);
 295
 296         return -ENOENT;
 297 }
 298
 299 #endif /* __OMAP_DRV_H__ */