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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012 Red Hat
4 *
5 * based in parts on udlfb.c:
6 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
7 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
8 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
9 */
10
11#ifndef UDL_DRV_H
12#define UDL_DRV_H
13
14#include <linux/mm_types.h>
15#include <linux/usb.h>
16
17#include <drm/drm_connector.h>
18#include <drm/drm_crtc.h>
19#include <drm/drm_device.h>
20#include <drm/drm_encoder.h>
21#include <drm/drm_framebuffer.h>
22#include <drm/drm_gem.h>
23#include <drm/drm_plane.h>
24
25struct drm_mode_create_dumb;
26
27#define DRIVER_NAME "udl"
28#define DRIVER_DESC "DisplayLink"
29#define DRIVER_DATE "20120220"
30
31#define DRIVER_MAJOR 0
32#define DRIVER_MINOR 0
33#define DRIVER_PATCHLEVEL 1
34
35struct udl_device;
36
37struct urb_node {
38 struct list_head entry;
39 struct udl_device *dev;
40 struct urb *urb;
41};
42
43struct urb_list {
44 struct list_head list;
45 spinlock_t lock;
46 wait_queue_head_t sleep;
47 int available;
48 int count;
49 size_t size;
50};
51
52struct udl_connector {
53 struct drm_connector connector;
54 /* last udl_detect edid */
55 struct edid *edid;
56};
57
58static inline struct udl_connector *to_udl_connector(struct drm_connector *connector)
59{
60 return container_of(connector, struct udl_connector, connector);
61}
62
63struct udl_device {
64 struct drm_device drm;
65 struct device *dev;
66 struct device *dmadev;
67
68 struct drm_plane primary_plane;
69 struct drm_crtc crtc;
70 struct drm_encoder encoder;
71
72 struct mutex gem_lock;
73
74 int sku_pixel_limit;
75
76 struct urb_list urbs;
77};
78
79#define to_udl(x) container_of(x, struct udl_device, drm)
80
81static inline struct usb_device *udl_to_usb_device(struct udl_device *udl)
82{
83 return interface_to_usbdev(to_usb_interface(udl->drm.dev));
84}
85
86/* modeset */
87int udl_modeset_init(struct drm_device *dev);
88struct drm_connector *udl_connector_init(struct drm_device *dev);
89
90struct urb *udl_get_urb(struct drm_device *dev);
91
92int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
93void udl_sync_pending_urbs(struct drm_device *dev);
94void udl_urb_completion(struct urb *urb);
95
96int udl_init(struct udl_device *udl);
97
98int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
99 const char *front, char **urb_buf_ptr,
100 u32 byte_offset, u32 device_byte_offset, u32 byte_width);
101
102int udl_drop_usb(struct drm_device *dev);
103int udl_select_std_channel(struct udl_device *udl);
104
105#endif
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012 Red Hat
4 *
5 * based in parts on udlfb.c:
6 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
7 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
8 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
9 */
10
11#ifndef UDL_DRV_H
12#define UDL_DRV_H
13
14#include <linux/mm_types.h>
15#include <linux/usb.h>
16
17#include <drm/drm_device.h>
18#include <drm/drm_framebuffer.h>
19#include <drm/drm_gem.h>
20#include <drm/drm_simple_kms_helper.h>
21
22struct drm_mode_create_dumb;
23
24#define DRIVER_NAME "udl"
25#define DRIVER_DESC "DisplayLink"
26#define DRIVER_DATE "20120220"
27
28#define DRIVER_MAJOR 0
29#define DRIVER_MINOR 0
30#define DRIVER_PATCHLEVEL 1
31
32struct udl_device;
33
34struct urb_node {
35 struct list_head entry;
36 struct udl_device *dev;
37 struct delayed_work release_urb_work;
38 struct urb *urb;
39};
40
41struct urb_list {
42 struct list_head list;
43 spinlock_t lock;
44 struct semaphore limit_sem;
45 int available;
46 int count;
47 size_t size;
48};
49
50struct udl_device {
51 struct drm_device drm;
52 struct device *dev;
53 struct device *dmadev;
54
55 struct drm_simple_display_pipe display_pipe;
56
57 struct mutex gem_lock;
58
59 int sku_pixel_limit;
60
61 struct urb_list urbs;
62
63 char mode_buf[1024];
64 uint32_t mode_buf_len;
65};
66
67#define to_udl(x) container_of(x, struct udl_device, drm)
68
69static inline struct usb_device *udl_to_usb_device(struct udl_device *udl)
70{
71 return interface_to_usbdev(to_usb_interface(udl->drm.dev));
72}
73
74/* modeset */
75int udl_modeset_init(struct drm_device *dev);
76struct drm_connector *udl_connector_init(struct drm_device *dev);
77
78struct urb *udl_get_urb(struct drm_device *dev);
79
80int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
81void udl_urb_completion(struct urb *urb);
82
83int udl_init(struct udl_device *udl);
84
85int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
86 const char *front, char **urb_buf_ptr,
87 u32 byte_offset, u32 device_byte_offset, u32 byte_width);
88
89int udl_drop_usb(struct drm_device *dev);
90
91#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */
92#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */
93#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */
94#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */
95
96#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */
97#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */
98#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
99#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
100
101/* On/Off for driving the DisplayLink framebuffer to the display */
102#define UDL_REG_BLANK_MODE 0x1f
103
104#define UDL_BLANK_MODE_ON 0x00 /* hsync and vsync on, visible */
105#define UDL_BLANK_MODE_BLANKED 0x01 /* hsync and vsync on, blanked */
106#define UDL_BLANK_MODE_VSYNC_OFF 0x03 /* vsync off, blanked */
107#define UDL_BLANK_MODE_HSYNC_OFF 0x05 /* hsync off, blanked */
108#define UDL_BLANK_MODE_POWERDOWN 0x07 /* powered off; requires modeset */
109
110#endif