| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef UDLFB_H |
| 3 | #define UDLFB_H |
| 4 | |
| 5 | /* |
| 6 | * TODO: Propose standard fb.h ioctl for reporting damage, |
| 7 | * using _IOWR() and one of the existing area structs from fb.h |
| 8 | * Consider these ioctls deprecated, but they're still used by the |
| 9 | * DisplayLink X server as yet - need both to be modified in tandem |
| 10 | * when new ioctl(s) are ready. |
| 11 | */ |
| 12 | #define DLFB_IOCTL_RETURN_EDID 0xAD |
| 13 | #define DLFB_IOCTL_REPORT_DAMAGE 0xAA |
| 14 | struct dloarea { |
| 15 | int x, y; |
| 16 | int w, h; |
| 17 | int x2, y2; |
| 18 | }; |
| 19 | |
| 20 | struct urb_node { |
| 21 | struct list_head entry; |
| 22 | struct dlfb_data *dlfb; |
| 23 | struct urb *urb; |
| 24 | }; |
| 25 | |
| 26 | struct urb_list { |
| 27 | struct list_head list; |
| 28 | spinlock_t lock; |
| 29 | struct semaphore limit_sem; |
| 30 | int available; |
| 31 | int count; |
| 32 | size_t size; |
| 33 | }; |
| 34 | |
| 35 | struct dlfb_data { |
| 36 | struct usb_device *udev; |
| 37 | struct fb_info *info; |
| 38 | struct urb_list urbs; |
| 39 | struct kref kref; |
| 40 | char *backing_buffer; |
| 41 | int fb_count; |
| 42 | bool virtualized; /* true when physical usb device not present */ |
| 43 | struct delayed_work init_framebuffer_work; |
| 44 | struct delayed_work free_framebuffer_work; |
| 45 | atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */ |
| 46 | atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */ |
| 47 | char *edid; /* null until we read edid from hw or get from sysfs */ |
| 48 | size_t edid_size; |
| 49 | int sku_pixel_limit; |
| 50 | int base16; |
| 51 | int base8; |
| 52 | u32 pseudo_palette[256]; |
| 53 | int blank_mode; /*one of FB_BLANK_ */ |
| 54 | struct fb_ops ops; |
| 55 | /* blit-only rendering path metrics, exposed through sysfs */ |
| 56 | atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */ |
| 57 | atomic_t bytes_identical; /* saved effort with backbuffer comparison */ |
| 58 | atomic_t bytes_sent; /* to usb, after compression including overhead */ |
| 59 | atomic_t cpu_kcycles_used; /* transpired during pixel processing */ |
| 60 | struct fb_var_screeninfo current_mode; |
| 61 | struct list_head deferred_free; |
| 62 | }; |
| 63 | |
| 64 | #define NR_USB_REQUEST_I2C_SUB_IO 0x02 |
| 65 | #define NR_USB_REQUEST_CHANNEL 0x12 |
| 66 | |
| 67 | /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */ |
| 68 | #define BULK_SIZE 512 |
| 69 | #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE) |
| 70 | #define WRITES_IN_FLIGHT (4) |
| 71 | |
| 72 | #define MAX_VENDOR_DESCRIPTOR_SIZE 256 |
| 73 | |
| 74 | #define GET_URB_TIMEOUT HZ |
| 75 | #define FREE_URB_TIMEOUT (HZ*2) |
| 76 | |
| 77 | #define BPP 2 |
| 78 | #define MAX_CMD_PIXELS 255 |
| 79 | |
| 80 | #define RLX_HEADER_BYTES 7 |
| 81 | #define MIN_RLX_PIX_BYTES 4 |
| 82 | #define MIN_RLX_CMD_BYTES (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES) |
| 83 | |
| 84 | #define RLE_HEADER_BYTES 6 |
| 85 | #define MIN_RLE_PIX_BYTES 3 |
| 86 | #define MIN_RLE_CMD_BYTES (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES) |
| 87 | |
| 88 | #define RAW_HEADER_BYTES 6 |
| 89 | #define MIN_RAW_PIX_BYTES 2 |
| 90 | #define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES) |
| 91 | |
| 92 | #define DL_DEFIO_WRITE_DELAY msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */ |
| 93 | #define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */ |
| 94 | |
| 95 | /* remove these once align.h patch is taken into kernel */ |
| 96 | #define DL_ALIGN_UP(x, a) ALIGN(x, a) |
| 97 | #define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a) |
| 98 | |
| 99 | #endif |