diff options
Diffstat (limited to 'drivers/gpu/drm/udl/udl_drv.h')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h new file mode 100644 index 000000000000..96820d03a303 --- /dev/null +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -0,0 +1,142 @@ +/* + * Copyright (C) 2012 Red Hat + * + * based in parts on udlfb.c: + * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it> + * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com> + * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License v2. See the file COPYING in the main directory of this archive for + * more details. + */ + +#ifndef UDL_DRV_H +#define UDL_DRV_H + +#include <linux/usb.h> + +#define DRIVER_NAME "udl" +#define DRIVER_DESC "DisplayLink" +#define DRIVER_DATE "20120220" + +#define DRIVER_MAJOR 0 +#define DRIVER_MINOR 0 +#define DRIVER_PATCHLEVEL 1 + +struct udl_device; + +struct urb_node { + struct list_head entry; + struct udl_device *dev; + struct delayed_work release_urb_work; + struct urb *urb; +}; + +struct urb_list { + struct list_head list; + spinlock_t lock; + struct semaphore limit_sem; + int available; + int count; + size_t size; +}; + +struct udl_fbdev; + +struct udl_device { + struct device *dev; + struct drm_device *ddev; + + int sku_pixel_limit; + + struct urb_list urbs; + atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */ + + struct udl_fbdev *fbdev; + char mode_buf[1024]; + uint32_t mode_buf_len; + atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */ + atomic_t bytes_identical; /* saved effort with backbuffer comparison */ + atomic_t bytes_sent; /* to usb, after compression including overhead */ + atomic_t cpu_kcycles_used; /* transpired during pixel processing */ +}; + +struct udl_gem_object { + struct drm_gem_object base; + struct page **pages; + void *vmapping; +}; + +#define to_udl_bo(x) container_of(x, struct udl_gem_object, base) + +struct udl_framebuffer { + struct drm_framebuffer base; + struct udl_gem_object *obj; + bool active_16; /* active on the 16-bit channel */ +}; + +#define to_udl_fb(x) container_of(x, struct udl_framebuffer, base) + +/* modeset */ +int udl_modeset_init(struct drm_device *dev); +void udl_modeset_cleanup(struct drm_device *dev); +int udl_connector_init(struct drm_device *dev, struct drm_encoder *encoder); + +struct drm_encoder *udl_encoder_init(struct drm_device *dev); + +struct urb *udl_get_urb(struct drm_device *dev); + +int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len); +void udl_urb_completion(struct urb *urb); + +int udl_driver_load(struct drm_device *dev, unsigned long flags); +int udl_driver_unload(struct drm_device *dev); + +int udl_fbdev_init(struct drm_device *dev); +void udl_fbdev_cleanup(struct drm_device *dev); +void udl_fbdev_unplug(struct drm_device *dev); +struct drm_framebuffer * +udl_fb_user_fb_create(struct drm_device *dev, + struct drm_file *file, + struct drm_mode_fb_cmd2 *mode_cmd); + +int udl_render_hline(struct drm_device *dev, int bpp, struct urb **urb_ptr, + const char *front, char **urb_buf_ptr, + u32 byte_offset, u32 byte_width, + int *ident_ptr, int *sent_ptr); + +int udl_dumb_create(struct drm_file *file_priv, + struct drm_device *dev, + struct drm_mode_create_dumb *args); +int udl_gem_mmap(struct drm_file *file_priv, struct drm_device *dev, + uint32_t handle, uint64_t *offset); +int udl_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev, + uint32_t handle); + +int udl_gem_init_object(struct drm_gem_object *obj); +void udl_gem_free_object(struct drm_gem_object *gem_obj); +struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev, + size_t size); + +int udl_gem_vmap(struct udl_gem_object *obj); +void udl_gem_vunmap(struct udl_gem_object *obj); +int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); +int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); + +int udl_handle_damage(struct udl_framebuffer *fb, int x, int y, + int width, int height); + +int udl_drop_usb(struct drm_device *dev); + +#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */ +#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */ +#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */ +#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */ + +#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */ +#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */ +#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */ +#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */ + +#endif |