5 #define BUF_HIGH_WATER_MARK 1024
6 #define BUF_SIZE (64*1024)
9 struct list_head entry;
10 struct dlfb_data *dev;
15 struct list_head list;
17 struct semaphore limit_sem;
24 struct usb_device *udev;
25 struct device *gdev; /* &udev->dev */
26 struct usb_interface *interface;
27 struct urb *tx_urb, *ctrl_urb;
34 struct delayed_work deferred_work;
35 struct mutex fb_open_lock;
36 struct mutex bulk_mutex;
38 atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
39 atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
40 atomic_t use_defio; /* 0 = rely on ioctls and blit/copy/fill rects */
45 struct completion done;
50 u32 pseudo_palette[256];
51 /* blit-only rendering path metrics, exposed through sysfs */
52 atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
53 atomic_t bytes_identical; /* saved effort with backbuffer comparison */
54 atomic_t bytes_sent; /* to usb, after compression including overhead */
55 atomic_t cpu_kcycles_used; /* transpired during pixel processing */
56 /* interface usage metrics. Clients can call driver via several */
60 atomic_t damage_count;
61 atomic_t defio_fault_count;
64 #define NR_USB_REQUEST_I2C_SUB_IO 0x02
65 #define NR_USB_REQUEST_CHANNEL 0x12
67 /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
69 #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
70 #define WRITES_IN_FLIGHT (4)
72 #define GET_URB_TIMEOUT HZ
73 #define FREE_URB_TIMEOUT (HZ*2)
75 static void dlfb_bulk_callback(struct urb *urb)
77 struct dlfb_data *dev_info = urb->context;
78 complete(&dev_info->done);
81 static void dlfb_edid(struct dlfb_data *dev_info)
87 for (i = 0; i < 128; i++) {
89 usb_control_msg(dev_info->udev,
90 usb_rcvctrlpipe(dev_info->udev, 0), (0x02),
91 (0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
93 dev_info->edid[i] = rbuf[1];
98 static int dlfb_bulk_msg(struct dlfb_data *dev_info, int len)
102 init_completion(&dev_info->done);
104 dev_info->tx_urb->actual_length = 0;
105 dev_info->tx_urb->transfer_buffer_length = len;
107 ret = usb_submit_urb(dev_info->tx_urb, GFP_KERNEL);
108 if (!wait_for_completion_timeout(&dev_info->done, 1000)) {
109 usb_kill_urb(dev_info->tx_urb);
110 printk("usb timeout !!!\n");
113 return dev_info->tx_urb->actual_length;
116 #define dlfb_set_register insert_command
118 /* remove once this gets added to sysfs.h */
119 #define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store)
121 #define dl_err(format, arg...) \
122 dev_err(dev->gdev, "dlfb: " format, ## arg)
123 #define dl_warn(format, arg...) \
124 dev_warn(dev->gdev, "dlfb: " format, ## arg)
125 #define dl_notice(format, arg...) \
126 dev_notice(dev->gdev, "dlfb: " format, ## arg)
127 #define dl_info(format, arg...) \
128 dev_info(dev->gdev, "dlfb: " format, ## arg)