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Diffstat (limited to 'drivers/media/usb/usbtv/usbtv.h')
-rw-r--r--drivers/media/usb/usbtv/usbtv.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/media/usb/usbtv/usbtv.h b/drivers/media/usb/usbtv/usbtv.h
new file mode 100644
index 000000000000..536343da1e47
--- /dev/null
+++ b/drivers/media/usb/usbtv/usbtv.h
@@ -0,0 +1,98 @@
+/*
+ * Fushicai USBTV007 Video Grabber Driver
+ *
+ * Copyright (c) 2013 Lubomir Rintel
+ * All rights reserved.
+ * No physical hardware was harmed running Windows during the
+ * reverse-engineering activity
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ */
+
+#include <linux/slab.h>
+#include <linux/usb.h>
+
+#include <media/v4l2-device.h>
+#include <media/videobuf2-vmalloc.h>
+
+/* Hardware. */
+#define USBTV_VIDEO_ENDP 0x81
+#define USBTV_BASE 0xc000
+#define USBTV_REQUEST_REG 12
+
+/* Number of concurrent isochronous urbs submitted.
+ * Higher numbers was seen to overly saturate the USB bus. */
+#define USBTV_ISOC_TRANSFERS 16
+#define USBTV_ISOC_PACKETS 8
+
+#define USBTV_CHUNK_SIZE 256
+#define USBTV_CHUNK 240
+
+/* Chunk header. */
+#define USBTV_MAGIC_OK(chunk) ((be32_to_cpu(chunk[0]) & 0xff000000) \
+ == 0x88000000)
+#define USBTV_FRAME_ID(chunk) ((be32_to_cpu(chunk[0]) & 0x00ff0000) >> 16)
+#define USBTV_ODD(chunk) ((be32_to_cpu(chunk[0]) & 0x0000f000) >> 15)
+#define USBTV_CHUNK_NO(chunk) (be32_to_cpu(chunk[0]) & 0x00000fff)
+
+#define USBTV_TV_STD (V4L2_STD_525_60 | V4L2_STD_PAL)
+
+/* parameters for supported TV norms */
+struct usbtv_norm_params {
+ v4l2_std_id norm;
+ int cap_width, cap_height;
+};
+
+/* A single videobuf2 frame buffer. */
+struct usbtv_buf {
+ struct vb2_buffer vb;
+ struct list_head list;
+};
+
+/* Per-device structure. */
+struct usbtv {
+ struct device *dev;
+ struct usb_device *udev;
+
+ /* video */
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct vb2_queue vb2q;
+ struct mutex v4l2_lock;
+ struct mutex vb2q_lock;
+
+ /* List of videobuf2 buffers protected by a lock. */
+ spinlock_t buflock;
+ struct list_head bufs;
+
+ /* Number of currently processed frame, useful find
+ * out when a new one begins. */
+ u32 frame_id;
+ int chunks_done;
+
+ enum {
+ USBTV_COMPOSITE_INPUT,
+ USBTV_SVIDEO_INPUT,
+ } input;
+ v4l2_std_id norm;
+ int width, height;
+ int n_chunks;
+ int iso_size;
+ unsigned int sequence;
+ struct urb *isoc_urbs[USBTV_ISOC_TRANSFERS];
+};
+
+int usbtv_set_regs(struct usbtv *usbtv, const u16 regs[][2], int size);
+
+int usbtv_video_init(struct usbtv *usbtv);
+void usbtv_video_free(struct usbtv *usbtv);