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 25 struct drm_mode_create_dumb; 26 27 #define DRIVER_NAME "udl" 28 #define DRIVER_DESC "DisplayLink" 29 30 #define DRIVER_MAJOR 0 31 #define DRIVER_MINOR 0 32 #define DRIVER_PATCHLEVEL 1 33 34 struct udl_device; 35 36 struct urb_node { 37 struct list_head entry; 38 struct udl_device *dev; 39 struct urb *urb; 40 }; 41 42 struct urb_list { 43 struct list_head list; 44 spinlock_t lock; 45 wait_queue_head_t sleep; 46 int available; 47 int count; 48 size_t size; 49 }; 50 51 struct udl_device { 52 struct drm_device drm; 53 54 unsigned long sku_pixel_limit; 55 56 struct drm_plane primary_plane; 57 struct drm_crtc crtc; 58 struct drm_encoder encoder; 59 struct drm_connector connector; 60 61 struct urb_list urbs; 62 }; 63 64 #define to_udl(x) container_of(x, struct udl_device, drm) 65 66 static inline struct usb_device *udl_to_usb_device(struct udl_device *udl) 67 { 68 return interface_to_usbdev(to_usb_interface(udl->drm.dev)); 69 } 70 71 /* modeset */ 72 int udl_modeset_init(struct udl_device *udl); 73 struct drm_connector *udl_connector_init(struct drm_device *dev); 74 75 struct urb *udl_get_urb(struct udl_device *udl); 76 77 int udl_submit_urb(struct udl_device *udl, struct urb *urb, size_t len); 78 void udl_sync_pending_urbs(struct udl_device *udl); 79 void udl_urb_completion(struct urb *urb); 80 81 int udl_init(struct udl_device *udl); 82 83 int udl_render_hline(struct udl_device *udl, int log_bpp, struct urb **urb_ptr, 84 const char *front, char **urb_buf_ptr, 85 u32 byte_offset, u32 device_byte_offset, u32 byte_width); 86 87 int udl_drop_usb(struct udl_device *udl); 88 int udl_select_std_channel(struct udl_device *udl); 89 90 #endif 91