LXR linux/drivers/gpu/drm/omapdrm/omap

   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: */
  45struct 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 */
  61struct 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 */
  74struct 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 */
  83struct omap_irq_wait;
  84struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev,
  85                uint32_t irqmask, int count);
  86int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
  87                unsigned long timeout);
  88
  89struct 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
 125int omap_debugfs_init(struct drm_minor *minor);
 126void omap_debugfs_cleanup(struct drm_minor *minor);
 127void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m);
 128void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
 129void omap_gem_describe_objects(struct list_head *list, struct seq_file *m);
 130#endif
 131
 132#ifdef CONFIG_PM
 133int omap_gem_resume(struct device *dev);
 134#endif
 135
 136int omap_irq_enable_vblank(struct drm_device *dev, int crtc_id);
 137void omap_irq_disable_vblank(struct drm_device *dev, int crtc_id);
 138irqreturn_t omap_irq_handler(int irq, void *arg);
 139void omap_irq_preinstall(struct drm_device *dev);
 140int omap_irq_postinstall(struct drm_device *dev);
 141void omap_irq_uninstall(struct drm_device *dev);
 142void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 143void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 144void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 145void omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 146int omap_drm_irq_uninstall(struct drm_device *dev);
 147int omap_drm_irq_install(struct drm_device *dev);
 148
 149struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev);
 150void omap_fbdev_free(struct drm_device *dev);
 151
 152const struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc);
 153enum omap_channel omap_crtc_channel(struct drm_crtc *crtc);
 154int omap_crtc_apply(struct drm_crtc *crtc,
 155                struct omap_drm_apply *apply);
 156void omap_crtc_pre_init(void);
 157void omap_crtc_pre_uninit(void);
 158struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 159                struct drm_plane *plane, enum omap_channel channel, int id);
 160void omap_crtc_flush(struct drm_crtc *crtc);
 161
 162struct drm_plane *omap_plane_init(struct drm_device *dev,
 163                int plane_id, bool private_plane);
 164int omap_plane_dpms(struct drm_plane *plane, int mode);
 165int 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);
 172void omap_plane_install_properties(struct drm_plane *plane,
 173                struct drm_mode_object *obj);
 174int omap_plane_set_property(struct drm_plane *plane,
 175                struct drm_property *property, uint64_t val);
 176
 177struct drm_encoder *omap_encoder_init(struct drm_device *dev,
 178                struct omap_dss_device *dssdev);
 179int omap_encoder_set_enabled(struct drm_encoder *encoder, bool enabled);
 180int omap_encoder_update(struct drm_encoder *encoder,
 181                struct omap_overlay_manager *mgr,
 182                struct omap_video_timings *timings);
 183
 184struct drm_connector *omap_connector_init(struct drm_device *dev,
 185                int connector_type, struct omap_dss_device *dssdev,
 186                struct drm_encoder *encoder);
 187struct drm_encoder *omap_connector_attached_encoder(
 188                struct drm_connector *connector);
 189void omap_connector_flush(struct drm_connector *connector,
 190                int x, int y, int w, int h);
 191bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
 192
 193void copy_timings_omap_to_drm(struct drm_display_mode *mode,
 194                struct omap_video_timings *timings);
 195void copy_timings_drm_to_omap(struct omap_video_timings *timings,
 196                struct drm_display_mode *mode);
 197
 198uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
 199                uint32_t max_formats, enum omap_color_mode supported_modes);
 200struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
 201                struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd);
 202struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
 203                struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
 204struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p);
 205int omap_framebuffer_pin(struct drm_framebuffer *fb);
 206int omap_framebuffer_unpin(struct drm_framebuffer *fb);
 207void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 208                struct omap_drm_window *win, struct omap_overlay_info *info);
 209struct drm_connector *omap_framebuffer_get_next_connector(
 210                struct drm_framebuffer *fb, struct drm_connector *from);
 211void omap_framebuffer_flush(struct drm_framebuffer *fb,
 212                int x, int y, int w, int h);
 213
 214void omap_gem_init(struct drm_device *dev);
 215void omap_gem_deinit(struct drm_device *dev);
 216
 217struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 218                union omap_gem_size gsize, uint32_t flags);
 219int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file,
 220                union omap_gem_size gsize, uint32_t flags, uint32_t *handle);
 221void omap_gem_free_object(struct drm_gem_object *obj);
 222void *omap_gem_vaddr(struct drm_gem_object *obj);
 223int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
 224                uint32_t handle, uint64_t *offset);
 225int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
 226                struct drm_mode_create_dumb *args);
 227int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 228int omap_gem_mmap_obj(struct drm_gem_object *obj,
 229                struct vm_area_struct *vma);
 230int omap_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 231int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op);
 232int omap_gem_op_finish(struct drm_gem_object *obj, enum omap_gem_op op);
 233int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op);
 234int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op,
 235                void (*fxn)(void *arg), void *arg);
 236int omap_gem_roll(struct drm_gem_object *obj, uint32_t roll);
 237void omap_gem_cpu_sync(struct drm_gem_object *obj, int pgoff);
 238void omap_gem_dma_sync(struct drm_gem_object *obj,
 239                enum dma_data_direction dir);
 240int omap_gem_get_paddr(struct drm_gem_object *obj,
 241                dma_addr_t *paddr, bool remap);
 242int omap_gem_put_paddr(struct drm_gem_object *obj);
 243int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
 244                bool remap);
 245int omap_gem_put_pages(struct drm_gem_object *obj);
 246uint32_t omap_gem_flags(struct drm_gem_object *obj);
 247int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
 248                int x, int y, dma_addr_t *paddr);
 249uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
 250size_t omap_gem_mmap_size(struct drm_gem_object *obj);
 251int omap_gem_tiled_size(struct drm_gem_object *obj, uint16_t *w, uint16_t *h);
 252int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient);
 253
 254struct dma_buf *omap_gem_prime_export(struct drm_device *dev,
 255                struct drm_gem_object *obj, int flags);
 256struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
 257                struct dma_buf *buffer);
 258
 259static 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 */
 271uint32_t pipe2vbl(struct drm_crtc *crtc);
 272struct omap_dss_device *omap_encoder_get_dssdev(struct drm_encoder *encoder);
 273
 274/* should these be made into common util helpers?
 275 */
 276
 277static 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
 292fail:
 293        while (--i > 0)
 294                drm_gem_object_unreference_unlocked(bos[i]);
 295
 296        return -ENOENT;
 297}
 298
 299#endif /* __OMAP_DRV_H__ */
 300