Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 709 insertions, 0 deletions

diff --git a/drivers/media/pci/cx18/cx18-driver.h b/drivers/media/pci/cx18/cx18-driver.h
new file mode 100644
index 000000000..ef545b961
--- /dev/null
+++ b/drivers/media/pci/cx18/cx18-driver.h
@@ -0,0 +1,709 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *  cx18 driver internal defines and structures
+ *
+ *  Derived from ivtv-driver.h
+ *
+ *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
+ *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
+ */
+
+#ifndef CX18_DRIVER_H
+#define CX18_DRIVER_H
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/sched/signal.h>
+#include <linux/fs.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/list.h>
+#include <linux/unistd.h>
+#include <linux/pagemap.h>
+#include <linux/workqueue.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <asm/byteorder.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+#include <media/tuner.h>
+#include <media/i2c/ir-kbd-i2c.h>
+#include "cx18-mailbox.h"
+#include "cx18-av-core.h"
+#include "cx23418.h"
+
+/* DVB */
+#include <media/demux.h>
+#include <media/dmxdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_frontend.h>
+#include <media/dvb_net.h>
+#include <media/dvbdev.h>
+
+/* Videobuf / YUV support */
+#include <media/videobuf-core.h>
+#include <media/videobuf-vmalloc.h>
+
+#ifndef CONFIG_PCI
+#  error "This driver requires kernel PCI support."
+#endif
+
+#define CX18_MEM_OFFSET	0x00000000
+#define CX18_MEM_SIZE	0x04000000
+#define CX18_REG_OFFSET	0x02000000
+
+/* Maximum cx18 driver instances. */
+#define CX18_MAX_CARDS 32
+
+/* Supported cards */
+#define CX18_CARD_HVR_1600_ESMT	      0	/* Hauppauge HVR 1600 (ESMT memory) */
+#define CX18_CARD_HVR_1600_SAMSUNG    1	/* Hauppauge HVR 1600 (Samsung memory) */
+#define CX18_CARD_COMPRO_H900	      2	/* Compro VideoMate H900 */
+#define CX18_CARD_YUAN_MPC718	      3	/* Yuan MPC718 */
+#define CX18_CARD_CNXT_RAPTOR_PAL     4	/* Conexant Raptor PAL */
+#define CX18_CARD_TOSHIBA_QOSMIO_DVBT 5 /* Toshiba Qosmio Interal DVB-T/Analog*/
+#define CX18_CARD_LEADTEK_PVR2100     6 /* Leadtek WinFast PVR2100 */
+#define CX18_CARD_LEADTEK_DVR3100H    7 /* Leadtek WinFast DVR3100 H */
+#define CX18_CARD_GOTVIEW_PCI_DVD3    8 /* GoTView PCI DVD3 Hybrid */
+#define CX18_CARD_HVR_1600_S5H1411    9 /* Hauppauge HVR 1600 s5h1411/tda18271*/
+#define CX18_CARD_LAST		      9
+
+#define CX18_ENC_STREAM_TYPE_MPG  0
+#define CX18_ENC_STREAM_TYPE_TS   1
+#define CX18_ENC_STREAM_TYPE_YUV  2
+#define CX18_ENC_STREAM_TYPE_VBI  3
+#define CX18_ENC_STREAM_TYPE_PCM  4
+#define CX18_ENC_STREAM_TYPE_IDX  5
+#define CX18_ENC_STREAM_TYPE_RAD  6
+#define CX18_MAX_STREAMS	  7
+
+/* system vendor and device IDs */
+#define PCI_VENDOR_ID_CX      0x14f1
+#define PCI_DEVICE_ID_CX23418 0x5b7a
+
+/* subsystem vendor ID */
+#define CX18_PCI_ID_HAUPPAUGE		0x0070
+#define CX18_PCI_ID_COMPRO		0x185b
+#define CX18_PCI_ID_YUAN		0x12ab
+#define CX18_PCI_ID_CONEXANT		0x14f1
+#define CX18_PCI_ID_TOSHIBA		0x1179
+#define CX18_PCI_ID_LEADTEK		0x107D
+#define CX18_PCI_ID_GOTVIEW		0x5854
+
+/* ======================================================================== */
+/* ========================== START USER SETTABLE DMA VARIABLES =========== */
+/* ======================================================================== */
+
+/* DMA Buffers, Default size in MB allocated */
+#define CX18_DEFAULT_ENC_TS_BUFFERS  1
+#define CX18_DEFAULT_ENC_MPG_BUFFERS 2
+#define CX18_DEFAULT_ENC_IDX_BUFFERS 1
+#define CX18_DEFAULT_ENC_YUV_BUFFERS 2
+#define CX18_DEFAULT_ENC_VBI_BUFFERS 1
+#define CX18_DEFAULT_ENC_PCM_BUFFERS 1
+
+/* Maximum firmware DMA buffers per stream */
+#define CX18_MAX_FW_MDLS_PER_STREAM 63
+
+/* YUV buffer sizes in bytes to ensure integer # of frames per buffer */
+#define CX18_UNIT_ENC_YUV_BUFSIZE	(720 *  32 * 3 / 2) /* bytes */
+#define CX18_625_LINE_ENC_YUV_BUFSIZE	(CX18_UNIT_ENC_YUV_BUFSIZE * 576/32)
+#define CX18_525_LINE_ENC_YUV_BUFSIZE	(CX18_UNIT_ENC_YUV_BUFSIZE * 480/32)
+
+/* IDX buffer size should be a multiple of the index entry size from the chip */
+struct cx18_enc_idx_entry {
+	__le32 length;
+	__le32 offset_low;
+	__le32 offset_high;
+	__le32 flags;
+	__le32 pts_low;
+	__le32 pts_high;
+} __attribute__ ((packed));
+#define CX18_UNIT_ENC_IDX_BUFSIZE \
+	(sizeof(struct cx18_enc_idx_entry) * V4L2_ENC_IDX_ENTRIES)
+
+/* DMA buffer, default size in kB allocated */
+#define CX18_DEFAULT_ENC_TS_BUFSIZE   32
+#define CX18_DEFAULT_ENC_MPG_BUFSIZE  32
+#define CX18_DEFAULT_ENC_IDX_BUFSIZE  (CX18_UNIT_ENC_IDX_BUFSIZE * 1 / 1024 + 1)
+#define CX18_DEFAULT_ENC_YUV_BUFSIZE  (CX18_UNIT_ENC_YUV_BUFSIZE * 3 / 1024 + 1)
+#define CX18_DEFAULT_ENC_PCM_BUFSIZE   4
+
+/* i2c stuff */
+#define I2C_CLIENTS_MAX 16
+
+/* debugging */
+
+/* Flag to turn on high volume debugging */
+#define CX18_DBGFLG_WARN  (1 << 0)
+#define CX18_DBGFLG_INFO  (1 << 1)
+#define CX18_DBGFLG_API   (1 << 2)
+#define CX18_DBGFLG_DMA   (1 << 3)
+#define CX18_DBGFLG_IOCTL (1 << 4)
+#define CX18_DBGFLG_FILE  (1 << 5)
+#define CX18_DBGFLG_I2C   (1 << 6)
+#define CX18_DBGFLG_IRQ   (1 << 7)
+/* Flag to turn on high volume debugging */
+#define CX18_DBGFLG_HIGHVOL (1 << 8)
+
+/* NOTE: extra space before comma in 'fmt , ## args' is required for
+   gcc-2.95, otherwise it won't compile. */
+#define CX18_DEBUG(x, type, fmt, args...) \
+	do { \
+		if ((x) & cx18_debug) \
+			v4l2_info(&cx->v4l2_dev, " " type ": " fmt , ## args); \
+	} while (0)
+#define CX18_DEBUG_WARN(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_WARN, "warning", fmt , ## args)
+#define CX18_DEBUG_INFO(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_INFO, "info", fmt , ## args)
+#define CX18_DEBUG_API(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_API, "api", fmt , ## args)
+#define CX18_DEBUG_DMA(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_DMA, "dma", fmt , ## args)
+#define CX18_DEBUG_IOCTL(fmt, args...) CX18_DEBUG(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
+#define CX18_DEBUG_FILE(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_FILE, "file", fmt , ## args)
+#define CX18_DEBUG_I2C(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
+#define CX18_DEBUG_IRQ(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_IRQ, "irq", fmt , ## args)
+
+#define CX18_DEBUG_HIGH_VOL(x, type, fmt, args...) \
+	do { \
+		if (((x) & cx18_debug) && (cx18_debug & CX18_DBGFLG_HIGHVOL)) \
+			v4l2_info(&cx->v4l2_dev, " " type ": " fmt , ## args); \
+	} while (0)
+#define CX18_DEBUG_HI_WARN(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_WARN, "warning", fmt , ## args)
+#define CX18_DEBUG_HI_INFO(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_INFO, "info", fmt , ## args)
+#define CX18_DEBUG_HI_API(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_API, "api", fmt , ## args)
+#define CX18_DEBUG_HI_DMA(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_DMA, "dma", fmt , ## args)
+#define CX18_DEBUG_HI_IOCTL(fmt, args...) CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
+#define CX18_DEBUG_HI_FILE(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_FILE, "file", fmt , ## args)
+#define CX18_DEBUG_HI_I2C(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
+#define CX18_DEBUG_HI_IRQ(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IRQ, "irq", fmt , ## args)
+
+/* Standard kernel messages */
+#define CX18_ERR(fmt, args...)      v4l2_err(&cx->v4l2_dev, fmt , ## args)
+#define CX18_WARN(fmt, args...)     v4l2_warn(&cx->v4l2_dev, fmt , ## args)
+#define CX18_INFO(fmt, args...)     v4l2_info(&cx->v4l2_dev, fmt , ## args)
+
+/* Messages for internal subdevs to use */
+#define CX18_DEBUG_DEV(x, dev, type, fmt, args...) \
+	do { \
+		if ((x) & cx18_debug) \
+			v4l2_info(dev, " " type ": " fmt , ## args); \
+	} while (0)
+#define CX18_DEBUG_WARN_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_WARN, dev, "warning", fmt , ## args)
+#define CX18_DEBUG_INFO_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_INFO, dev, "info", fmt , ## args)
+#define CX18_DEBUG_API_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_API, dev, "api", fmt , ## args)
+#define CX18_DEBUG_DMA_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_DMA, dev, "dma", fmt , ## args)
+#define CX18_DEBUG_IOCTL_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_IOCTL, dev, "ioctl", fmt , ## args)
+#define CX18_DEBUG_FILE_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_FILE, dev, "file", fmt , ## args)
+#define CX18_DEBUG_I2C_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_I2C, dev, "i2c", fmt , ## args)
+#define CX18_DEBUG_IRQ_DEV(dev, fmt, args...) \
+		CX18_DEBUG_DEV(CX18_DBGFLG_IRQ, dev, "irq", fmt , ## args)
+
+#define CX18_DEBUG_HIGH_VOL_DEV(x, dev, type, fmt, args...) \
+	do { \
+		if (((x) & cx18_debug) && (cx18_debug & CX18_DBGFLG_HIGHVOL)) \
+			v4l2_info(dev, " " type ": " fmt , ## args); \
+	} while (0)
+#define CX18_DEBUG_HI_WARN_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_WARN, dev, "warning", fmt , ## args)
+#define CX18_DEBUG_HI_INFO_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_INFO, dev, "info", fmt , ## args)
+#define CX18_DEBUG_HI_API_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_API, dev, "api", fmt , ## args)
+#define CX18_DEBUG_HI_DMA_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_DMA, dev, "dma", fmt , ## args)
+#define CX18_DEBUG_HI_IOCTL_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_IOCTL, dev, "ioctl", fmt , ## args)
+#define CX18_DEBUG_HI_FILE_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_FILE, dev, "file", fmt , ## args)
+#define CX18_DEBUG_HI_I2C_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_I2C, dev, "i2c", fmt , ## args)
+#define CX18_DEBUG_HI_IRQ_DEV(dev, fmt, args...) \
+	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_IRQ, dev, "irq", fmt , ## args)
+
+#define CX18_ERR_DEV(dev, fmt, args...)      v4l2_err(dev, fmt , ## args)
+#define CX18_WARN_DEV(dev, fmt, args...)     v4l2_warn(dev, fmt , ## args)
+#define CX18_INFO_DEV(dev, fmt, args...)     v4l2_info(dev, fmt , ## args)
+
+extern int cx18_debug;
+
+struct cx18_options {
+	int megabytes[CX18_MAX_STREAMS]; /* Size in megabytes of each stream */
+	int cardtype;		/* force card type on load */
+	int tuner;		/* set tuner on load */
+	int radio;		/* enable/disable radio */
+};
+
+/* per-mdl bit flags */
+#define CX18_F_M_NEED_SWAP  0	/* mdl buffer data must be endianness swapped */
+
+/* per-stream, s_flags */
+#define CX18_F_S_CLAIMED	3	/* this stream is claimed */
+#define CX18_F_S_STREAMING      4	/* the fw is decoding/encoding this stream */
+#define CX18_F_S_INTERNAL_USE	5	/* this stream is used internally (sliced VBI processing) */
+#define CX18_F_S_STREAMOFF	7	/* signal end of stream EOS */
+#define CX18_F_S_APPL_IO        8	/* this stream is used read/written by an application */
+#define CX18_F_S_STOPPING	9	/* telling the fw to stop capturing */
+
+/* per-cx18, i_flags */
+#define CX18_F_I_LOADED_FW		0	/* Loaded firmware 1st time */
+#define CX18_F_I_EOS			4	/* End of encoder stream */
+#define CX18_F_I_RADIO_USER		5	/* radio tuner is selected */
+#define CX18_F_I_ENC_PAUSED		13	/* the encoder is paused */
+#define CX18_F_I_INITED			21	/* set after first open */
+#define CX18_F_I_FAILED			22	/* set if first open failed */
+
+/* These are the VBI types as they appear in the embedded VBI private packets. */
+#define CX18_SLICED_TYPE_TELETEXT_B     (1)
+#define CX18_SLICED_TYPE_CAPTION_525    (4)
+#define CX18_SLICED_TYPE_WSS_625        (5)
+#define CX18_SLICED_TYPE_VPS            (7)
+
+/**
+ * list_entry_is_past_end - check if a previous loop cursor is off list end
+ * @pos:	the type * previously used as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the list_head within the struct.
+ *
+ * Check if the entry's list_head is the head of the list, thus it's not a
+ * real entry but was the loop cursor that walked past the end
+ */
+#define list_entry_is_past_end(pos, head, member) \
+	(&pos->member == (head))
+
+struct cx18_buffer {
+	struct list_head list;
+	dma_addr_t dma_handle;
+	char *buf;
+
+	u32 bytesused;
+	u32 readpos;
+};
+
+struct cx18_mdl {
+	struct list_head list;
+	u32 id;		/* index into cx->scb->cpu_mdl[] of 1st cx18_mdl_ent */
+
+	unsigned int skipped;
+	unsigned long m_flags;
+
+	struct list_head buf_list;
+	struct cx18_buffer *curr_buf; /* current buffer in list for reading */
+
+	u32 bytesused;
+	u32 readpos;
+};
+
+struct cx18_queue {
+	struct list_head list;
+	atomic_t depth;
+	u32 bytesused;
+	spinlock_t lock;
+};
+
+struct cx18_stream; /* forward reference */
+
+struct cx18_dvb {
+	struct cx18_stream *stream;
+	struct dmx_frontend hw_frontend;
+	struct dmx_frontend mem_frontend;
+	struct dmxdev dmxdev;
+	struct dvb_adapter dvb_adapter;
+	struct dvb_demux demux;
+	struct dvb_frontend *fe;
+	struct dvb_net dvbnet;
+	int enabled;
+	int feeding;
+	struct mutex feedlock;
+};
+
+struct cx18;	 /* forward reference */
+struct cx18_scb; /* forward reference */
+
+
+#define CX18_MAX_MDL_ACKS 2
+#define CX18_MAX_IN_WORK_ORDERS (CX18_MAX_FW_MDLS_PER_STREAM + 7)
+/* CPU_DE_RELEASE_MDL can burst CX18_MAX_FW_MDLS_PER_STREAM orders in a group */
+
+#define CX18_F_EWO_MB_STALE_UPON_RECEIPT 0x1
+#define CX18_F_EWO_MB_STALE_WHILE_PROC   0x2
+#define CX18_F_EWO_MB_STALE \
+	     (CX18_F_EWO_MB_STALE_UPON_RECEIPT | CX18_F_EWO_MB_STALE_WHILE_PROC)
+
+struct cx18_in_work_order {
+	struct work_struct work;
+	atomic_t pending;
+	struct cx18 *cx;
+	unsigned long flags;
+	int rpu;
+	struct cx18_mailbox mb;
+	struct cx18_mdl_ack mdl_ack[CX18_MAX_MDL_ACKS];
+	char *str;
+};
+
+#define CX18_INVALID_TASK_HANDLE 0xffffffff
+
+struct cx18_stream {
+	/* These first five fields are always set, even if the stream
+	   is not actually created. */
+	struct video_device video_dev;	/* v4l2_dev is NULL when stream not created */
+	struct cx18_dvb *dvb;		/* DVB / Digital Transport */
+	struct cx18 *cx;		/* for ease of use */
+	const char *name;		/* name of the stream */
+	int type;			/* stream type */
+	u32 handle;			/* task handle */
+	u32 v4l2_dev_caps;		/* device capabilities */
+	unsigned int mdl_base_idx;
+
+	u32 id;
+	unsigned long s_flags;	/* status flags, see above */
+	int dma;		/* can be PCI_DMA_TODEVICE,
+				   PCI_DMA_FROMDEVICE or
+				   PCI_DMA_NONE */
+	wait_queue_head_t waitq;
+
+	/* Buffers */
+	struct list_head buf_pool;	/* buffers not attached to an MDL */
+	u32 buffers;			/* total buffers owned by this stream */
+	u32 buf_size;			/* size in bytes of a single buffer */
+
+	/* MDL sizes - all stream MDLs are the same size */
+	u32 bufs_per_mdl;
+	u32 mdl_size;		/* total bytes in all buffers in a mdl */
+
+	/* MDL Queues */
+	struct cx18_queue q_free;	/* free - in rotation, not committed */
+	struct cx18_queue q_busy;	/* busy - in use by firmware */
+	struct cx18_queue q_full;	/* full - data for user apps */
+	struct cx18_queue q_idle;	/* idle - not in rotation */
+
+	struct work_struct out_work_order;
+
+	/* Videobuf for YUV video */
+	u32 pixelformat;
+	u32 vb_bytes_per_frame;
+	u32 vb_bytes_per_line;
+	struct list_head vb_capture;    /* video capture queue */
+	spinlock_t vb_lock;
+	struct timer_list vb_timeout;
+
+	struct videobuf_queue vbuf_q;
+	spinlock_t vbuf_q_lock; /* Protect vbuf_q */
+	enum v4l2_buf_type vb_type;
+};
+
+struct cx18_videobuf_buffer {
+	/* Common video buffer sub-system struct */
+	struct videobuf_buffer vb;
+	v4l2_std_id tvnorm; /* selected tv norm */
+	u32 bytes_used;
+};
+
+struct cx18_open_id {
+	struct v4l2_fh fh;
+	u32 open_id;
+	int type;
+	struct cx18 *cx;
+};
+
+static inline struct cx18_open_id *fh2id(struct v4l2_fh *fh)
+{
+	return container_of(fh, struct cx18_open_id, fh);
+}
+
+static inline struct cx18_open_id *file2id(struct file *file)
+{
+	return fh2id(file->private_data);
+}
+
+/* forward declaration of struct defined in cx18-cards.h */
+struct cx18_card;
+
+/*
+ * A note about "sliced" VBI data as implemented in this driver:
+ *
+ * Currently we collect the sliced VBI in the form of Ancillary Data
+ * packets, inserted by the AV core decoder/digitizer/slicer in the
+ * horizontal blanking region of the VBI lines, in "raw" mode as far as
+ * the Encoder is concerned.  We don't ever tell the Encoder itself
+ * to provide sliced VBI. (AV Core: sliced mode - Encoder: raw mode)
+ *
+ * We then process the ancillary data ourselves to send the sliced data
+ * to the user application directly or build up MPEG-2 private stream 1
+ * packets to splice into (only!) MPEG-2 PS streams for the user app.
+ *
+ * (That's how ivtv essentially does it.)
+ *
+ * The Encoder should be able to extract certain sliced VBI data for
+ * us and provide it in a separate stream or splice it into any type of
+ * MPEG PS or TS stream, but this isn't implemented yet.
+ */
+
+/*
+ * Number of "raw" VBI samples per horizontal line we tell the Encoder to
+ * grab from the decoder/digitizer/slicer output for raw or sliced VBI.
+ * It depends on the pixel clock and the horiz rate:
+ *
+ * (1/Fh)*(2*Fp) = Samples/line
+ *     = 4 bytes EAV + Anc data in hblank + 4 bytes SAV + active samples
+ *
+ *  Sliced VBI data is sent as ancillary data during horizontal blanking
+ *  Raw VBI is sent as active video samples during vertcal blanking
+ *
+ *  We use a  BT.656 pxiel clock of 13.5 MHz and a BT.656 active line
+ *  length of 720 pixels @ 4:2:2 sampling.  Thus...
+ *
+ *  For systems that use a 15.734 kHz horizontal rate, such as
+ *  NTSC-M, PAL-M, PAL-60, and other 60 Hz/525 line systems, we have:
+ *
+ *  (1/15.734 kHz) * 2 * 13.5 MHz = 1716 samples/line =
+ *  4 bytes SAV + 268 bytes anc data + 4 bytes SAV + 1440 active samples
+ *
+ *  For systems that use a 15.625 kHz horizontal rate, such as
+ *  PAL-B/G/H, PAL-I, SECAM-L and other 50 Hz/625 line systems, we have:
+ *
+ *  (1/15.625 kHz) * 2 * 13.5 MHz = 1728 samples/line =
+ *  4 bytes SAV + 280 bytes anc data + 4 bytes SAV + 1440 active samples
+ */
+#define VBI_ACTIVE_SAMPLES	1444 /* 4 byte SAV + 720 Y + 720 U/V */
+#define VBI_HBLANK_SAMPLES_60HZ	272 /* 4 byte EAV + 268 anc/fill */
+#define VBI_HBLANK_SAMPLES_50HZ	284 /* 4 byte EAV + 280 anc/fill */
+
+#define CX18_VBI_FRAMES 32
+
+struct vbi_info {
+	/* Current state of v4l2 VBI settings for this device */
+	struct v4l2_format in;
+	struct v4l2_sliced_vbi_format *sliced_in; /* pointer to in.fmt.sliced */
+	u32 count;    /* Count of VBI data lines: 60 Hz: 12 or 50 Hz: 18 */
+	u32 start[2]; /* First VBI data line per field: 10 & 273 or 6 & 318 */
+
+	u32 frame; /* Count of VBI buffers/frames received from Encoder */
+
+	/*
+	 * Vars for creation and insertion of MPEG Private Stream 1 packets
+	 * of sliced VBI data into an MPEG PS
+	 */
+
+	/* Boolean: create and insert Private Stream 1 packets into the PS */
+	int insert_mpeg;
+
+	/*
+	 * Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines.
+	 * Used in cx18-vbi.c only for collecting sliced data, and as a source
+	 * during conversion of sliced VBI data into MPEG Priv Stream 1 packets.
+	 * We don't need to save state here, but the array may have been a bit
+	 * too big (2304 bytes) to alloc from the stack.
+	 */
+	struct v4l2_sliced_vbi_data sliced_data[36];
+
+	/*
+	 * A ring buffer of driver-generated MPEG-2 PS
+	 * Program Pack/Private Stream 1 packets for sliced VBI data insertion
+	 * into the MPEG PS stream.
+	 *
+	 * In each sliced_mpeg_data[] buffer is:
+	 *	16 byte MPEG-2 PS Program Pack Header
+	 *	16 byte MPEG-2 Private Stream 1 PES Header
+	 *	 4 byte magic number: "itv0" or "ITV0"
+	 *	 4 byte first  field line mask, if "itv0"
+	 *	 4 byte second field line mask, if "itv0"
+	 *	36 lines, if "ITV0"; or <36 lines, if "itv0"; of sliced VBI data
+	 *
+	 *	Each line in the payload is
+	 *	 1 byte line header derived from the SDID (WSS, CC, VPS, etc.)
+	 *	42 bytes of line data
+	 *
+	 * That's a maximum 1552 bytes of payload in the Private Stream 1 packet
+	 * which is the payload size a PVR-350 (CX23415) MPEG decoder will
+	 * accept for VBI data. So, including the headers, it's a maximum 1584
+	 * bytes total.
+	 */
+#define CX18_SLICED_MPEG_DATA_MAXSZ	1584
+	/* copy_vbi_buf() needs 8 temp bytes on the end for the worst case */
+#define CX18_SLICED_MPEG_DATA_BUFSZ	(CX18_SLICED_MPEG_DATA_MAXSZ+8)
+	u8 *sliced_mpeg_data[CX18_VBI_FRAMES];
+	u32 sliced_mpeg_size[CX18_VBI_FRAMES];
+
+	/* Count of Program Pack/Program Stream 1 packets inserted into PS */
+	u32 inserted_frame;
+
+	/*
+	 * A dummy driver stream transfer mdl & buffer with a copy of the next
+	 * sliced_mpeg_data[] buffer for output to userland apps.
+	 * Only used in cx18-fileops.c, but its state needs to persist at times.
+	 */
+	struct cx18_mdl sliced_mpeg_mdl;
+	struct cx18_buffer sliced_mpeg_buf;
+};
+
+/* Per cx23418, per I2C bus private algo callback data */
+struct cx18_i2c_algo_callback_data {
+	struct cx18 *cx;
+	int bus_index;   /* 0 or 1 for the cx23418's 1st or 2nd I2C bus */
+};
+
+#define CX18_MAX_MMIO_WR_RETRIES 10
+
+/* Struct to hold info about cx18 cards */
+struct cx18 {
+	int instance;
+	struct pci_dev *pci_dev;
+	struct v4l2_device v4l2_dev;
+	struct v4l2_subdev *sd_av;     /* A/V decoder/digitizer sub-device */
+	struct v4l2_subdev *sd_extmux; /* External multiplexer sub-dev */
+
+	const struct cx18_card *card;	/* card information */
+	const char *card_name;  /* full name of the card */
+	const struct cx18_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */
+	u8 is_50hz;
+	u8 is_60hz;
+	u8 nof_inputs;		/* number of video inputs */
+	u8 nof_audio_inputs;	/* number of audio inputs */
+	u32 v4l2_cap;		/* V4L2 capabilities of card */
+	u32 hw_flags;		/* Hardware description of the board */
+	unsigned int free_mdl_idx;
+	struct cx18_scb __iomem *scb; /* pointer to SCB */
+	struct mutex epu2apu_mb_lock; /* protect driver to chip mailbox in SCB*/
+	struct mutex epu2cpu_mb_lock; /* protect driver to chip mailbox in SCB*/
+
+	struct cx18_av_state av_state;
+
+	/* codec settings */
+	struct cx2341x_handler cxhdl;
+	u32 filter_mode;
+	u32 temporal_strength;
+	u32 spatial_strength;
+
+	/* dualwatch */
+	unsigned long dualwatch_jiffies;
+	u32 dualwatch_stereo_mode;
+
+	struct mutex serialize_lock;    /* mutex used to serialize open/close/start/stop/ioctl operations */
+	struct cx18_options options;	/* User options */
+	int stream_buffers[CX18_MAX_STREAMS]; /* # of buffers for each stream */
+	int stream_buf_size[CX18_MAX_STREAMS]; /* Stream buffer size */
+	struct cx18_stream streams[CX18_MAX_STREAMS];	/* Stream data */
+	struct snd_cx18_card *alsa; /* ALSA interface for PCM capture stream */
+	void (*pcm_announce_callback)(struct snd_cx18_card *card, u8 *pcm_data,
+				      size_t num_bytes);
+
+	unsigned long i_flags;  /* global cx18 flags */
+	atomic_t ana_capturing;	/* count number of active analog capture streams */
+	atomic_t tot_capturing;	/* total count number of active capture streams */
+	int search_pack_header;
+
+	int open_id;		/* incremented each time an open occurs, used as
+				   unique ID. Starts at 1, so 0 can be used as
+				   uninitialized value in the stream->id. */
+
+	resource_size_t base_addr;
+
+	u8 card_rev;
+	void __iomem *enc_mem, *reg_mem;
+
+	struct vbi_info vbi;
+
+	u64 mpg_data_received;
+	u64 vbi_data_inserted;
+
+	wait_queue_head_t mb_apu_waitq;
+	wait_queue_head_t mb_cpu_waitq;
+	wait_queue_head_t cap_w;
+	/* when the current DMA is finished this queue is woken up */
+	wait_queue_head_t dma_waitq;
+
+	u32 sw1_irq_mask;
+	u32 sw2_irq_mask;
+	u32 hw2_irq_mask;
+
+	struct workqueue_struct *in_work_queue;
+	char in_workq_name[11]; /* "cx18-NN-in" */
+	struct cx18_in_work_order in_work_order[CX18_MAX_IN_WORK_ORDERS];
+	char epu_debug_str[256]; /* CX18_EPU_DEBUG is rare: use shared space */
+
+	/* i2c */
+	struct i2c_adapter i2c_adap[2];
+	struct i2c_algo_bit_data i2c_algo[2];
+	struct cx18_i2c_algo_callback_data i2c_algo_cb_data[2];
+
+	struct IR_i2c_init_data ir_i2c_init_data;
+
+	/* gpio */
+	u32 gpio_dir;
+	u32 gpio_val;
+	struct mutex gpio_lock;
+	struct v4l2_subdev sd_gpiomux;
+	struct v4l2_subdev sd_resetctrl;
+
+	/* v4l2 and User settings */
+
+	/* codec settings */
+	u32 audio_input;
+	u32 active_input;
+	v4l2_std_id std;
+	v4l2_std_id tuner_std;	/* The norm of the tuner (fixed) */
+
+	/* Used for cx18-alsa module loading */
+	struct work_struct request_module_wk;
+};
+
+static inline struct cx18 *to_cx18(struct v4l2_device *v4l2_dev)
+{
+	return container_of(v4l2_dev, struct cx18, v4l2_dev);
+}
+
+/* cx18 extensions to be loaded */
+extern int (*cx18_ext_init)(struct cx18 *);
+
+/* Globals */
+extern int cx18_first_minor;
+
+/*==============Prototypes==================*/
+
+/* Return non-zero if a signal is pending */
+int cx18_msleep_timeout(unsigned int msecs, int intr);
+
+/* Read Hauppauge eeprom */
+struct tveeprom; /* forward reference */
+void cx18_read_eeprom(struct cx18 *cx, struct tveeprom *tv);
+
+/* First-open initialization: load firmware, etc. */
+int cx18_init_on_first_open(struct cx18 *cx);
+
+/* Test if the current VBI mode is raw (1) or sliced (0) */
+static inline int cx18_raw_vbi(const struct cx18 *cx)
+{
+	return cx->vbi.in.type == V4L2_BUF_TYPE_VBI_CAPTURE;
+}
+
+/* Call the specified callback for all subdevs with a grp_id bit matching the
+ * mask in hw (if 0, then match them all). Ignore any errors. */
+#define cx18_call_hw(cx, hw, o, f, args...)				\
+	v4l2_device_mask_call_all(&(cx)->v4l2_dev, hw, o, f, ##args)
+
+#define cx18_call_all(cx, o, f, args...) cx18_call_hw(cx, 0, o, f , ##args)
+
+/* Call the specified callback for all subdevs with a grp_id bit matching the
+ * mask in hw (if 0, then match them all). If the callback returns an error
+ * other than 0 or -ENOIOCTLCMD, then return with that error code. */
+#define cx18_call_hw_err(cx, hw, o, f, args...)				\
+	v4l2_device_mask_call_until_err(&(cx)->v4l2_dev, hw, o, f, ##args)
+
+#define cx18_call_all_err(cx, o, f, args...) \
+	cx18_call_hw_err(cx, 0, o, f , ##args)
+
+#endif /* CX18_DRIVER_H */