[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / udl / udl_drv.h

/*
 * 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>
#include <drm/drm_gem.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

#define UDL_BO_CACHEABLE		(1 << 0)
#define UDL_BO_WC		(1 << 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 drm_device drm;
	struct device *dev;
	struct usb_device *udev;
	struct drm_crtc *crtc;

	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 */
};

#define to_udl(x) container_of(x, struct udl_device, drm)

struct udl_gem_object {
	struct drm_gem_object base;
	struct page **pages;
	void *vmapping;
	struct sg_table *sg;
	unsigned int flags;
};

#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_restore(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_init(struct udl_device *udl);
void udl_fini(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,
		      const struct drm_mode_fb_cmd2 *mode_cmd);

int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
		     const char *front, char **urb_buf_ptr,
		     u32 byte_offset, u32 device_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);

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);
struct dma_buf *udl_gem_prime_export(struct drm_device *dev,
				     struct drm_gem_object *obj, int flags);
struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
				struct dma_buf *dma_buf);

int udl_gem_get_pages(struct udl_gem_object *obj);
void udl_gem_put_pages(struct udl_gem_object *obj);
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_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
Commit	Line	Data
5320918b DA	1	/*
	2	* Copyright (C) 2012 Red Hat
	3	*
	4	* based in parts on udlfb.c:
	5	* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
	6	* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
	7	* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
	8	*
	9	* This file is subject to the terms and conditions of the GNU General Public
	10	* License v2. See the file COPYING in the main directory of this archive for
	11	* more details.
	12	*/
	13
	14	#ifndef UDL_DRV_H
	15	#define UDL_DRV_H
	16
	17	#include <linux/usb.h>
d9fc9413	18	#include <drm/drm_gem.h>
5320918b DA	19
	20	#define DRIVER_NAME "udl"
	21	#define DRIVER_DESC "DisplayLink"
	22	#define DRIVER_DATE "20120220"
	23
	24	#define DRIVER_MAJOR 0
	25	#define DRIVER_MINOR 0
	26	#define DRIVER_PATCHLEVEL 1
	27
09a58da0 HS	28	#define UDL_BO_CACHEABLE (1 << 0)
	29	#define UDL_BO_WC (1 << 1)
	30
5320918b DA	31	struct udl_device;
	32
	33	struct urb_node {
	34	struct list_head entry;
	35	struct udl_device *dev;
	36	struct delayed_work release_urb_work;
	37	struct urb *urb;
	38	};
	39
	40	struct urb_list {
	41	struct list_head list;
	42	spinlock_t lock;
	43	struct semaphore limit_sem;
	44	int available;
	45	int count;
	46	size_t size;
	47	};
	48
	49	struct udl_fbdev;
	50
	51	struct udl_device {
042dd34e	52	struct drm_device drm;
5320918b	53	struct device *dev;
d4f68a75	54	struct usb_device *udev;
737ba109	55	struct drm_crtc *crtc;
5320918b DA	56
	57	int sku_pixel_limit;
	58
	59	struct urb_list urbs;
	60	atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
	61
	62	struct udl_fbdev *fbdev;
	63	char mode_buf[1024];
	64	uint32_t mode_buf_len;
	65	atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
	66	atomic_t bytes_identical; /* saved effort with backbuffer comparison */
	67	atomic_t bytes_sent; /* to usb, after compression including overhead */
	68	atomic_t cpu_kcycles_used; /* transpired during pixel processing */
	69	};
	70
042dd34e	71	#define to_udl(x) container_of(x, struct udl_device, drm)
5b523bd7	72
5320918b DA	73	struct udl_gem_object {
	74	struct drm_gem_object base;
	75	struct page **pages;
	76	void *vmapping;
96503f59	77	struct sg_table *sg;
09a58da0	78	unsigned int flags;
5320918b DA	79	};
	80
	81	#define to_udl_bo(x) container_of(x, struct udl_gem_object, base)
	82
	83	struct udl_framebuffer {
	84	struct drm_framebuffer base;
	85	struct udl_gem_object *obj;
	86	bool active_16; /* active on the 16-bit channel */
	87	};
	88
	89	#define to_udl_fb(x) container_of(x, struct udl_framebuffer, base)
	90
	91	/* modeset */
	92	int udl_modeset_init(struct drm_device *dev);
737ba109	93	void udl_modeset_restore(struct drm_device *dev);
5320918b DA	94	void udl_modeset_cleanup(struct drm_device *dev);
	95	int udl_connector_init(struct drm_device dev, struct drm_encoder encoder);
	96
	97	struct drm_encoder udl_encoder_init(struct drm_device dev);
	98
	99	struct urb udl_get_urb(struct drm_device dev);
	100
	101	int udl_submit_urb(struct drm_device dev, struct urb urb, size_t len);
	102	void udl_urb_completion(struct urb *urb);
	103
042dd34e DA	104	int udl_init(struct udl_device *udl);
042dd34e DA	105	void udl_fini(struct drm_device *dev);
5320918b DA	106
	107	int udl_fbdev_init(struct drm_device *dev);
	108	void udl_fbdev_cleanup(struct drm_device *dev);
	109	void udl_fbdev_unplug(struct drm_device *dev);
	110	struct drm_framebuffer *
	111	udl_fb_user_fb_create(struct drm_device *dev,
	112	struct drm_file *file,
1eb83451	113	const struct drm_mode_fb_cmd2 *mode_cmd);
5320918b	114
dea6f074	115	int udl_render_hline(struct drm_device dev, int log_bpp, struct urb *urb_ptr,
5320918b	116	const char front, char *urb_buf_ptr,
3916e1d7	117	u32 byte_offset, u32 device_byte_offset, u32 byte_width,
5320918b DA	118	int ident_ptr, int sent_ptr);
	119
	120	int udl_dumb_create(struct drm_file *file_priv,
	121	struct drm_device *dev,
	122	struct drm_mode_create_dumb *args);
	123	int udl_gem_mmap(struct drm_file file_priv, struct drm_device dev,
	124	uint32_t handle, uint64_t *offset);
5320918b	125
5320918b DA	126	void udl_gem_free_object(struct drm_gem_object *gem_obj);
	127	struct udl_gem_object udl_gem_alloc_object(struct drm_device dev,
	128	size_t size);
ebfdd6d5 HS	129	struct dma_buf udl_gem_prime_export(struct drm_device dev,
ebfdd6d5 HS	130	struct drm_gem_object *obj, int flags);
96503f59 DA	131	struct drm_gem_object udl_gem_prime_import(struct drm_device dev,
96503f59 DA	132	struct dma_buf *dma_buf);
5320918b	133
4bc158e0 HS	134	int udl_gem_get_pages(struct udl_gem_object *obj);
4bc158e0 HS	135	void udl_gem_put_pages(struct udl_gem_object *obj);
5320918b DA	136	int udl_gem_vmap(struct udl_gem_object *obj);
5320918b DA	137	void udl_gem_vunmap(struct udl_gem_object *obj);
fa9e8550	138	int udl_drm_gem_mmap(struct file filp, struct vm_area_struct vma);
11bac800	139	int udl_gem_fault(struct vm_fault *vmf);
5320918b DA	140
	141	int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
	142	int width, int height);
	143
	144	int udl_drop_usb(struct drm_device *dev);
	145
	146	#define CMD_WRITE_RAW8 "\xAF\x60" /*< 8 bit raw write command. /
	147	#define CMD_WRITE_RL8 "\xAF\x61" /*< 8 bit run length command. /
	148	#define CMD_WRITE_COPY8 "\xAF\x62" /*< 8 bit copy command. /
	149	#define CMD_WRITE_RLX8 "\xAF\x63" /*< 8 bit extended run length command. /
	150
	151	#define CMD_WRITE_RAW16 "\xAF\x68" /*< 16 bit raw write command. /
	152	#define CMD_WRITE_RL16 "\xAF\x69" /*< 16 bit run length command. /
	153	#define CMD_WRITE_COPY16 "\xAF\x6A" /*< 16 bit copy command. /
	154	#define CMD_WRITE_RLX16 "\xAF\x6B" /*< 16 bit extended run length command. /
	155
	156	#endif