1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 296f8d864SPaul Mundt #ifndef UDLFB_H 396f8d864SPaul Mundt #define UDLFB_H 496f8d864SPaul Mundt 596f8d864SPaul Mundt /* 696f8d864SPaul Mundt * TODO: Propose standard fb.h ioctl for reporting damage, 796f8d864SPaul Mundt * using _IOWR() and one of the existing area structs from fb.h 896f8d864SPaul Mundt * Consider these ioctls deprecated, but they're still used by the 996f8d864SPaul Mundt * DisplayLink X server as yet - need both to be modified in tandem 1096f8d864SPaul Mundt * when new ioctl(s) are ready. 1196f8d864SPaul Mundt */ 1296f8d864SPaul Mundt #define DLFB_IOCTL_RETURN_EDID 0xAD 1396f8d864SPaul Mundt #define DLFB_IOCTL_REPORT_DAMAGE 0xAA 1496f8d864SPaul Mundt struct dloarea { 1596f8d864SPaul Mundt int x, y; 1696f8d864SPaul Mundt int w, h; 1796f8d864SPaul Mundt int x2, y2; 1896f8d864SPaul Mundt }; 1996f8d864SPaul Mundt 2096f8d864SPaul Mundt struct urb_node { 2196f8d864SPaul Mundt struct list_head entry; 227ea46206SLadislav Michl struct dlfb_data *dlfb; 2396f8d864SPaul Mundt struct urb *urb; 2496f8d864SPaul Mundt }; 2596f8d864SPaul Mundt 2696f8d864SPaul Mundt struct urb_list { 2796f8d864SPaul Mundt struct list_head list; 2896f8d864SPaul Mundt spinlock_t lock; 2996f8d864SPaul Mundt struct semaphore limit_sem; 3096f8d864SPaul Mundt int available; 3196f8d864SPaul Mundt int count; 3296f8d864SPaul Mundt size_t size; 3396f8d864SPaul Mundt }; 3496f8d864SPaul Mundt 3596f8d864SPaul Mundt struct dlfb_data { 3696f8d864SPaul Mundt struct usb_device *udev; 3796f8d864SPaul Mundt struct fb_info *info; 3896f8d864SPaul Mundt struct urb_list urbs; 3996f8d864SPaul Mundt char *backing_buffer; 4096f8d864SPaul Mundt int fb_count; 4196f8d864SPaul Mundt bool virtualized; /* true when physical usb device not present */ 4296f8d864SPaul Mundt atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */ 4396f8d864SPaul Mundt atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */ 4496f8d864SPaul Mundt char *edid; /* null until we read edid from hw or get from sysfs */ 4596f8d864SPaul Mundt size_t edid_size; 4696f8d864SPaul Mundt int sku_pixel_limit; 4796f8d864SPaul Mundt int base16; 4896f8d864SPaul Mundt int base8; 4996f8d864SPaul Mundt u32 pseudo_palette[256]; 5058e7c3b0SBernie Thompson int blank_mode; /*one of FB_BLANK_ */ 51babc250eSMikulas Patocka struct mutex render_mutex; 526b11f9d8SMikulas Patocka int damage_x; 536b11f9d8SMikulas Patocka int damage_y; 546b11f9d8SMikulas Patocka int damage_x2; 556b11f9d8SMikulas Patocka int damage_y2; 566b11f9d8SMikulas Patocka spinlock_t damage_lock; 576b11f9d8SMikulas Patocka struct work_struct damage_work; 582c29cfc3SMikulas Patocka struct fb_ops ops; 5996f8d864SPaul Mundt /* blit-only rendering path metrics, exposed through sysfs */ 6096f8d864SPaul Mundt atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */ 6196f8d864SPaul Mundt atomic_t bytes_identical; /* saved effort with backbuffer comparison */ 6296f8d864SPaul Mundt atomic_t bytes_sent; /* to usb, after compression including overhead */ 6396f8d864SPaul Mundt atomic_t cpu_kcycles_used; /* transpired during pixel processing */ 64564f1807SMikulas Patocka struct fb_var_screeninfo current_mode; 657433914eSMikulas Patocka struct list_head deferred_free; 6696f8d864SPaul Mundt }; 6796f8d864SPaul Mundt 6896f8d864SPaul Mundt #define NR_USB_REQUEST_I2C_SUB_IO 0x02 6996f8d864SPaul Mundt #define NR_USB_REQUEST_CHANNEL 0x12 7096f8d864SPaul Mundt 7196f8d864SPaul Mundt /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */ 7296f8d864SPaul Mundt #define BULK_SIZE 512 7396f8d864SPaul Mundt #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE) 7496f8d864SPaul Mundt #define WRITES_IN_FLIGHT (4) 7596f8d864SPaul Mundt 7696f8d864SPaul Mundt #define MAX_VENDOR_DESCRIPTOR_SIZE 256 7796f8d864SPaul Mundt 7896f8d864SPaul Mundt #define GET_URB_TIMEOUT HZ 7996f8d864SPaul Mundt #define FREE_URB_TIMEOUT (HZ*2) 8096f8d864SPaul Mundt 8196f8d864SPaul Mundt #define BPP 2 8296f8d864SPaul Mundt #define MAX_CMD_PIXELS 255 8396f8d864SPaul Mundt 8496f8d864SPaul Mundt #define RLX_HEADER_BYTES 7 8596f8d864SPaul Mundt #define MIN_RLX_PIX_BYTES 4 8696f8d864SPaul Mundt #define MIN_RLX_CMD_BYTES (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES) 8796f8d864SPaul Mundt 8896f8d864SPaul Mundt #define RLE_HEADER_BYTES 6 8996f8d864SPaul Mundt #define MIN_RLE_PIX_BYTES 3 9096f8d864SPaul Mundt #define MIN_RLE_CMD_BYTES (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES) 9196f8d864SPaul Mundt 9296f8d864SPaul Mundt #define RAW_HEADER_BYTES 6 9396f8d864SPaul Mundt #define MIN_RAW_PIX_BYTES 2 9496f8d864SPaul Mundt #define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES) 9596f8d864SPaul Mundt 96bb24153aSMikulas Patocka #define DL_DEFIO_WRITE_DELAY msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */ 9796f8d864SPaul Mundt #define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */ 9896f8d864SPaul Mundt 9996f8d864SPaul Mundt /* remove these once align.h patch is taken into kernel */ 10096f8d864SPaul Mundt #define DL_ALIGN_UP(x, a) ALIGN(x, a) 101ed067d4aSKrzysztof Kozlowski #define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a) 10296f8d864SPaul Mundt 10396f8d864SPaul Mundt #endif 104