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 #define DRIVER_DATE "20120220" 30 31 #define DRIVER_MAJOR 0 32 #define DRIVER_MINOR 0 33 #define DRIVER_PATCHLEVEL 1 34 35 struct udl_device; 36 37 struct urb_node { 38 struct list_head entry; 39 struct udl_device *dev; 40 struct urb *urb; 41 }; 42 43 struct 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 52 struct udl_device { 53 struct drm_device drm; 54 struct device *dev; 55 struct device *dmadev; 56 57 struct drm_plane primary_plane; 58 struct drm_crtc crtc; 59 struct drm_encoder encoder; 60 struct drm_connector connector; 61 62 struct mutex gem_lock; 63 64 int sku_pixel_limit; 65 66 struct urb_list urbs; 67 }; 68 69 #define to_udl(x) container_of(x, struct udl_device, drm) 70 71 static inline struct usb_device *udl_to_usb_device(struct udl_device *udl) 72 { 73 return interface_to_usbdev(to_usb_interface(udl->drm.dev)); 74 } 75 76 /* modeset */ 77 int udl_modeset_init(struct drm_device *dev); 78 struct drm_connector *udl_connector_init(struct drm_device *dev); 79 80 struct urb *udl_get_urb(struct drm_device *dev); 81 82 int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len); 83 void udl_sync_pending_urbs(struct drm_device *dev); 84 void udl_urb_completion(struct urb *urb); 85 86 int udl_init(struct udl_device *udl); 87 88 int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr, 89 const char *front, char **urb_buf_ptr, 90 u32 byte_offset, u32 device_byte_offset, u32 byte_width); 91 92 int udl_drop_usb(struct drm_device *dev); 93 int udl_select_std_channel(struct udl_device *udl); 94 95 #endif 96