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#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 usb_ctrlrequest dr;
struct fb_info *info;
struct urb_list urbs;
struct kref kref;
char *buf;
char *bufend;
char *backing_buffer;
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
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