| #ifndef UDLFB_H |
| #define UDLFB_H |
| |
| /* as libdlo */ |
| #define BUF_HIGH_WATER_MARK 1024 |
| #define BUF_SIZE (64*1024) |
| |
| struct urb_node { |
| struct list_head entry; |
| struct dlfb_data *dev; |
| struct urb *urb; |
| }; |
| |
| struct urb_list { |
| struct list_head list; |
| spinlock_t lock; |
| struct semaphore limit_sem; |
| int available; |
| int count; |
| size_t size; |
| }; |
| |
| struct dlfb_data { |
| struct usb_device *udev; |
| struct device *gdev; /* &udev->dev */ |
| struct usb_interface *interface; |
| struct urb *tx_urb, *ctrl_urb; |
| struct fb_info *info; |
| struct urb_list urbs; |
| struct kref kref; |
| char *buf; |
| char *bufend; |
| char *backing_buffer; |
| struct delayed_work deferred_work; |
| struct mutex fb_open_lock; |
| struct mutex bulk_mutex; |
| int fb_count; |
| atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */ |
| atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */ |
| atomic_t use_defio; /* 0 = rely on ioctls and blit/copy/fill rects */ |
| char edid[128]; |
| int sku_pixel_limit; |
| int screen_size; |
| int line_length; |
| struct completion done; |
| int base16; |
| int base16d; |
| int base8; |
| int base8d; |
| u32 pseudo_palette[256]; |
| /* blit-only rendering path metrics, exposed through sysfs */ |
| atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */ |
| atomic_t bytes_identical; /* saved effort with backbuffer comparison */ |
| atomic_t bytes_sent; /* to usb, after compression including overhead */ |
| atomic_t cpu_kcycles_used; /* transpired during pixel processing */ |
| /* interface usage metrics. Clients can call driver via several */ |
| atomic_t blit_count; |
| atomic_t copy_count; |
| atomic_t fill_count; |
| atomic_t damage_count; |
| atomic_t defio_fault_count; |
| }; |
| |
| #define NR_USB_REQUEST_I2C_SUB_IO 0x02 |
| #define NR_USB_REQUEST_CHANNEL 0x12 |
| |
| /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */ |
| #define BULK_SIZE 512 |
| #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE) |
| #define WRITES_IN_FLIGHT (4) |
| |
| #define GET_URB_TIMEOUT HZ |
| #define FREE_URB_TIMEOUT (HZ*2) |
| |
| static void dlfb_bulk_callback(struct urb *urb) |
| { |
| struct dlfb_data *dev_info = urb->context; |
| complete(&dev_info->done); |
| } |
| |
| static void dlfb_edid(struct dlfb_data *dev_info) |
| { |
| int i; |
| int ret; |
| char rbuf[2]; |
| |
| for (i = 0; i < 128; i++) { |
| ret = |
| usb_control_msg(dev_info->udev, |
| usb_rcvctrlpipe(dev_info->udev, 0), (0x02), |
| (0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2, |
| 0); |
| dev_info->edid[i] = rbuf[1]; |
| } |
| |
| } |
| |
| static int dlfb_bulk_msg(struct dlfb_data *dev_info, int len) |
| { |
| int ret; |
| |
| init_completion(&dev_info->done); |
| |
| dev_info->tx_urb->actual_length = 0; |
| dev_info->tx_urb->transfer_buffer_length = len; |
| |
| ret = usb_submit_urb(dev_info->tx_urb, GFP_KERNEL); |
| if (!wait_for_completion_timeout(&dev_info->done, 1000)) { |
| usb_kill_urb(dev_info->tx_urb); |
| printk("usb timeout !!!\n"); |
| } |
| |
| return dev_info->tx_urb->actual_length; |
| } |
| |
| #define dlfb_set_register insert_command |
| |
| /* remove once this gets added to sysfs.h */ |
| #define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store) |
| |
| #define dl_err(format, arg...) \ |
| dev_err(dev->gdev, "dlfb: " format, ## arg) |
| #define dl_warn(format, arg...) \ |
| dev_warn(dev->gdev, "dlfb: " format, ## arg) |
| #define dl_notice(format, arg...) \ |
| dev_notice(dev->gdev, "dlfb: " format, ## arg) |
| #define dl_info(format, arg...) \ |
| dev_info(dev->gdev, "dlfb: " format, ## arg) |
| #endif |