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linux/drivers/gpu/drm/omapdrm/omap_drv.h
Laurent Pinchart 1d5e5ea1f6 drm: omapdrm: Cancel pending page flips when closing device 
Pending page flips must be cancelled when closing the device, otherwise
their completion at next vblank will result in nasty effects, including
possible oopses due to resources required to complete the page flip
being freed.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12 22:52:45 +03:00

278 lines
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/*
* drivers/gpu/drm/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 <drm/omap_drm.h>
#include <drm/drm_gem.h>
#include <linux/platform_data/omap_drm.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
/* parameters which describe (unrotated) coordinates of scanout within a fb: */
struct omap_drm_window {
uint32_t rotation;
int32_t crtc_x, crtc_y; /* signed because can be offscreen */
uint32_t crtc_w, crtc_h;
uint32_t src_x, src_y;
uint32_t src_w, src_h;
};
/* For transiently registering for different DSS irqs that various parts
* of the KMS code need during setup/configuration. We these are not
* necessarily the same as what drm_vblank_get/put() are requesting, and
* the hysteresis in drm_vblank_put() is not necessarily desirable for
* internal housekeeping related irq usage.
*/
struct omap_drm_irq {
struct list_head node;
uint32_t irqmask;
bool registered;
void (*irq)(struct omap_drm_irq *irq, uint32_t irqstatus);
};
/* For KMS code that needs to wait for a certain # of IRQs:
*/
struct omap_irq_wait;
struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev,
uint32_t irqmask, int count);
int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
unsigned long timeout);
struct omap_drm_private {
uint32_t omaprev;
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;
/* lock for obj_list below */
spinlock_t list_lock;
/* list of GEM objects: */
struct list_head obj_list;
bool has_dmm;
/* properties: */
struct drm_property *zorder_prop;
/* irq handling: */
struct list_head irq_list; /* list of omap_drm_irq */
uint32_t vblank_mask; /* irq bits set for userspace vblank */
struct omap_drm_irq error_handler;
};
#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
#ifdef CONFIG_PM
int omap_gem_resume(struct device *dev);
#endif
int omap_irq_enable_vblank(struct drm_device *dev, int crtc_id);
void omap_irq_disable_vblank(struct drm_device *dev, int crtc_id);
void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
void omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
void omap_drm_irq_uninstall(struct drm_device *dev);
int omap_drm_irq_install(struct drm_device *dev);
struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev);
void omap_fbdev_free(struct drm_device *dev);
const struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc);
enum omap_channel omap_crtc_channel(struct drm_crtc *crtc);
int omap_crtc_flush(struct drm_crtc *crtc);
int omap_crtc_queue_unpin(struct drm_crtc *crtc, struct drm_framebuffer *fb);
void omap_crtc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
void omap_crtc_pre_init(void);
void omap_crtc_pre_uninit(void);
struct drm_crtc *omap_crtc_init(struct drm_device *dev,
struct drm_plane *plane, enum omap_channel channel, int id);
struct drm_plane *omap_plane_init(struct drm_device *dev,
int id, enum drm_plane_type type);
int omap_plane_set_enable(struct drm_plane *plane, bool enable);
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,
unsigned int src_x, unsigned int src_y,
unsigned int src_w, unsigned int src_h);
void omap_plane_install_properties(struct drm_plane *plane,
struct drm_mode_object *obj);
int omap_plane_set_property(struct drm_plane *plane,
struct drm_property *property, uint64_t val);
struct drm_encoder *omap_encoder_init(struct drm_device *dev,
struct omap_dss_device *dssdev);
int omap_encoder_set_enabled(struct drm_encoder *encoder, bool enabled);
int omap_encoder_update(struct drm_encoder *encoder,
struct omap_overlay_manager *mgr,
struct omap_video_timings *timings);
struct drm_connector *omap_connector_init(struct drm_device *dev,
int connector_type, struct omap_dss_device *dssdev,
struct drm_encoder *encoder);
struct drm_encoder *omap_connector_attached_encoder(
struct drm_connector *connector);
bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
void copy_timings_omap_to_drm(struct drm_display_mode *mode,
struct omap_video_timings *timings);
void copy_timings_drm_to_omap(struct omap_video_timings *timings,
struct drm_display_mode *mode);
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_pin(struct drm_framebuffer *fb);
int omap_framebuffer_unpin(struct drm_framebuffer *fb);
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
struct omap_drm_window *win, struct omap_overlay_info *info);
struct drm_connector *omap_framebuffer_get_next_connector(
struct drm_framebuffer *fb, struct drm_connector *from);
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);
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_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_mmap_obj(struct drm_gem_object *obj,
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);
void omap_gem_cpu_sync(struct drm_gem_object *obj, int pgoff);
void omap_gem_dma_sync(struct drm_gem_object *obj,
enum dma_data_direction dir);
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);
int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
bool remap);
int omap_gem_put_pages(struct drm_gem_object *obj);
uint32_t omap_gem_flags(struct drm_gem_object *obj);
int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
int x, int y, dma_addr_t *paddr);
uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
size_t omap_gem_mmap_size(struct drm_gem_object *obj);
int omap_gem_tiled_size(struct drm_gem_object *obj, uint16_t *w, uint16_t *h);
int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient);
struct dma_buf *omap_gem_prime_export(struct drm_device *dev,
struct drm_gem_object *obj, int flags);
struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
struct dma_buf *buffer);
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);
}
/* map crtc to vblank mask */
uint32_t pipe2vbl(struct drm_crtc *crtc);
struct omap_dss_device *omap_encoder_get_dssdev(struct drm_encoder *encoder);
/* 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__ */
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