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 <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: */
  46struct 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 */
  60struct 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 */
  69struct omap_irq_wait;
  70struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev,
  71                uint32_t irqmask, int count);
  72int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
  73                unsigned long timeout);
  74
  75struct 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
 121int omap_debugfs_init(struct drm_minor *minor);
 122void omap_debugfs_cleanup(struct drm_minor *minor);
 123void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m);
 124void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
 125void omap_gem_describe_objects(struct list_head *list, struct seq_file *m);
 126#endif
 127
 128#ifdef CONFIG_PM
 129int omap_gem_resume(struct device *dev);
 130#endif
 131
 132int omap_irq_enable_vblank(struct drm_device *dev, unsigned int pipe);
 133void omap_irq_disable_vblank(struct drm_device *dev, unsigned int pipe);
 134void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 135void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 136void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 137void omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 138void omap_drm_irq_uninstall(struct drm_device *dev);
 139int omap_drm_irq_install(struct drm_device *dev);
 140
 141struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev);
 142void omap_fbdev_free(struct drm_device *dev);
 143
 144struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc);
 145enum omap_channel omap_crtc_channel(struct drm_crtc *crtc);
 146void omap_crtc_pre_init(void);
 147void omap_crtc_pre_uninit(void);
 148struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 149                struct drm_plane *plane, enum omap_channel channel, int id);
 150int omap_crtc_wait_pending(struct drm_crtc *crtc);
 151
 152struct drm_plane *omap_plane_init(struct drm_device *dev,
 153                int id, enum drm_plane_type type);
 154void omap_plane_install_properties(struct drm_plane *plane,
 155                struct drm_mode_object *obj);
 156
 157struct drm_encoder *omap_encoder_init(struct drm_device *dev,
 158                struct omap_dss_device *dssdev);
 159
 160struct drm_connector *omap_connector_init(struct drm_device *dev,
 161                int connector_type, struct omap_dss_device *dssdev,
 162                struct drm_encoder *encoder);
 163struct drm_encoder *omap_connector_attached_encoder(
 164                struct drm_connector *connector);
 165bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
 166
 167void copy_timings_omap_to_drm(struct drm_display_mode *mode,
 168                struct omap_video_timings *timings);
 169void copy_timings_drm_to_omap(struct omap_video_timings *timings,
 170                struct drm_display_mode *mode);
 171
 172uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
 173                uint32_t max_formats, enum omap_color_mode supported_modes);
 174struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
 175                struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd);
 176struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
 177                struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
 178struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p);
 179int omap_framebuffer_pin(struct drm_framebuffer *fb);
 180void omap_framebuffer_unpin(struct drm_framebuffer *fb);
 181void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 182                struct omap_drm_window *win, struct omap_overlay_info *info);
 183struct drm_connector *omap_framebuffer_get_next_connector(
 184                struct drm_framebuffer *fb, struct drm_connector *from);
 185
 186void omap_gem_init(struct drm_device *dev);
 187void omap_gem_deinit(struct drm_device *dev);
 188
 189struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 190                union omap_gem_size gsize, uint32_t flags);
 191int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file,
 192                union omap_gem_size gsize, uint32_t flags, uint32_t *handle);
 193void omap_gem_free_object(struct drm_gem_object *obj);
 194void *omap_gem_vaddr(struct drm_gem_object *obj);
 195int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
 196                uint32_t handle, uint64_t *offset);
 197int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
 198                struct drm_mode_create_dumb *args);
 199int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 200int omap_gem_mmap_obj(struct drm_gem_object *obj,
 201                struct vm_area_struct *vma);
 202int omap_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 203int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op);
 204int omap_gem_op_finish(struct drm_gem_object *obj, enum omap_gem_op op);
 205int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op);
 206int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op,
 207                void (*fxn)(void *arg), void *arg);
 208int omap_gem_roll(struct drm_gem_object *obj, uint32_t roll);
 209void omap_gem_cpu_sync(struct drm_gem_object *obj, int pgoff);
 210void omap_gem_dma_sync(struct drm_gem_object *obj,
 211                enum dma_data_direction dir);
 212int omap_gem_get_paddr(struct drm_gem_object *obj,
 213                dma_addr_t *paddr, bool remap);
 214void omap_gem_put_paddr(struct drm_gem_object *obj);
 215int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
 216                bool remap);
 217int omap_gem_put_pages(struct drm_gem_object *obj);
 218uint32_t omap_gem_flags(struct drm_gem_object *obj);
 219int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
 220                int x, int y, dma_addr_t *paddr);
 221uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
 222size_t omap_gem_mmap_size(struct drm_gem_object *obj);
 223int omap_gem_tiled_size(struct drm_gem_object *obj, uint16_t *w, uint16_t *h);
 224int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient);
 225
 226struct dma_buf *omap_gem_prime_export(struct drm_device *dev,
 227                struct drm_gem_object *obj, int flags);
 228struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
 229                struct dma_buf *buffer);
 230
 231static 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 */
 243uint32_t pipe2vbl(struct drm_crtc *crtc);
 244struct omap_dss_device *omap_encoder_get_dssdev(struct drm_encoder *encoder);
 245
 246/* should these be made into common util helpers?
 247 */
 248
 249static 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
 264fail:
 265        while (--i > 0)
 266                drm_gem_object_unreference_unlocked(bos[i]);
 267
 268        return -ENOENT;
 269}
 270
 271#endif /* __OMAP_DRV_H__ */
 272