/*
    ioctl system call
    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "ivtv-driver.h"
#include "ivtv-version.h"
#include "ivtv-mailbox.h"
#include "ivtv-i2c.h"
#include "ivtv-queue.h"
#include "ivtv-fileops.h"
#include "ivtv-vbi.h"
#include "ivtv-audio.h"
#include "ivtv-video.h"
#include "ivtv-streams.h"
#include "ivtv-yuv.h"
#include "ivtv-ioctl.h"
#include "ivtv-gpio.h"
#include "ivtv-controls.h"
#include "ivtv-cards.h"
#include <media/saa7127.h>
#include <media/tveeprom.h>
#include <media/v4l2-chip-ident.h>
#include <linux/dvb/audio.h>
#include <linux/i2c-id.h>

u16 service2vbi(int type)
{
	switch (type) {
		case V4L2_SLICED_TELETEXT_B:
			return IVTV_SLICED_TYPE_TELETEXT_B;
		case V4L2_SLICED_CAPTION_525:
			return IVTV_SLICED_TYPE_CAPTION_525;
		case V4L2_SLICED_WSS_625:
			return IVTV_SLICED_TYPE_WSS_625;
		case V4L2_SLICED_VPS:
			return IVTV_SLICED_TYPE_VPS;
		default:
			return 0;
	}
}

static int valid_service_line(int field, int line, int is_pal)
{
	return (is_pal && line >= 6 && (line != 23 || field == 0)) ||
	       (!is_pal && line >= 10 && line < 22);
}

static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
{
	u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
	int i;

	set = set & valid_set;
	if (set == 0 || !valid_service_line(field, line, is_pal)) {
		return 0;
	}
	if (!is_pal) {
		if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
			return V4L2_SLICED_CAPTION_525;
	}
	else {
		if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
			return V4L2_SLICED_VPS;
		if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
			return V4L2_SLICED_WSS_625;
		if (line == 23)
			return 0;
	}
	for (i = 0; i < 32; i++) {
		if ((1 << i) & set)
			return 1 << i;
	}
	return 0;
}

void expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
{
	u16 set = fmt->service_set;
	int f, l;

	fmt->service_set = 0;
	for (f = 0; f < 2; f++) {
		for (l = 0; l < 24; l++) {
			fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
		}
	}
}

static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
{
	int f, l;
	u16 set = 0;

	for (f = 0; f < 2; f++) {
		for (l = 0; l < 24; l++) {
			fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
			set |= fmt->service_lines[f][l];
		}
	}
	return set != 0;
}

u16 get_service_set(struct v4l2_sliced_vbi_format *fmt)
{
	int f, l;
	u16 set = 0;

	for (f = 0; f < 2; f++) {
		for (l = 0; l < 24; l++) {
			set |= fmt->service_lines[f][l];
		}
	}
	return set;
}

static const struct {
	v4l2_std_id  std;
	char        *name;
} enum_stds[] = {
	{ V4L2_STD_PAL_BG | V4L2_STD_PAL_H, "PAL-BGH" },
	{ V4L2_STD_PAL_DK,    "PAL-DK"    },
	{ V4L2_STD_PAL_I,     "PAL-I"     },
	{ V4L2_STD_PAL_M,     "PAL-M"     },
	{ V4L2_STD_PAL_N,     "PAL-N"     },
	{ V4L2_STD_PAL_Nc,    "PAL-Nc"    },
	{ V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H, "SECAM-BGH" },
	{ V4L2_STD_SECAM_DK,  "SECAM-DK"  },
	{ V4L2_STD_SECAM_L,   "SECAM-L"   },
	{ V4L2_STD_SECAM_LC,  "SECAM-L'"  },
	{ V4L2_STD_NTSC_M,    "NTSC-M"    },
	{ V4L2_STD_NTSC_M_JP, "NTSC-J"    },
	{ V4L2_STD_NTSC_M_KR, "NTSC-K"    },
};

static const struct v4l2_standard ivtv_std_60hz =
{
	.frameperiod = {.numerator = 1001, .denominator = 30000},
	.framelines = 525,
};

static const struct v4l2_standard ivtv_std_50hz =
{
	.frameperiod = {.numerator = 1, .denominator = 25},
	.framelines = 625,
};

void ivtv_set_osd_alpha(struct ivtv *itv)
{
	ivtv_vapi(itv, CX2341X_OSD_SET_GLOBAL_ALPHA, 3,
		itv->osd_global_alpha_state, itv->osd_global_alpha, !itv->osd_local_alpha_state);
	ivtv_vapi(itv, CX2341X_OSD_SET_CHROMA_KEY, 2, itv->osd_color_key_state, itv->osd_color_key);
}

int ivtv_set_speed(struct ivtv *itv, int speed)
{
	u32 data[CX2341X_MBOX_MAX_DATA];
	struct ivtv_stream *s;
	int single_step = (speed == 1 || speed == -1);
	DEFINE_WAIT(wait);

	if (speed == 0) speed = 1000;

	/* No change? */
	if (speed == itv->speed && !single_step)
		return 0;

	s = &itv->streams[IVTV_DEC_STREAM_TYPE_MPG];

	if (single_step && (speed < 0) == (itv->speed < 0)) {
		/* Single step video and no need to change direction */
		ivtv_vapi(itv, CX2341X_DEC_STEP_VIDEO, 1, 0);
		itv->speed = speed;
		return 0;
	}
	if (single_step)
		/* Need to change direction */
		speed = speed < 0 ? -1000 : 1000;

	data[0] = (speed > 1000 || speed < -1000) ? 0x80000000 : 0;
	data[0] |= (speed > 1000 || speed < -1500) ? 0x40000000 : 0;
	data[1] = (speed < 0);
	data[2] = speed < 0 ? 3 : 7;
	data[3] = itv->params.video_b_frames;
	data[4] = (speed == 1500 || speed == 500) ? itv->speed_mute_audio : 0;
	data[5] = 0;
	data[6] = 0;

	if (speed == 1500 || speed == -1500) data[0] |= 1;
	else if (speed == 2000 || speed == -2000) data[0] |= 2;
	else if (speed > -1000 && speed < 0) data[0] |= (-1000 / speed);
	else if (speed < 1000 && speed > 0) data[0] |= (1000 / speed);

	/* If not decoding, just change speed setting */
	if (atomic_read(&itv->decoding) > 0) {
		int got_sig = 0;

		/* Stop all DMA and decoding activity */
		ivtv_vapi(itv, CX2341X_DEC_PAUSE_PLAYBACK, 1, 0);

		/* Wait for any DMA to finish */
		prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
		while (itv->i_flags & IVTV_F_I_DMA) {
			got_sig = signal_pending(current);
			if (got_sig)
				break;
			got_sig = 0;
			schedule();
		}
		finish_wait(&itv->dma_waitq, &wait);
		if (got_sig)
			return -EINTR;

		/* Change Speed safely */
		ivtv_api(itv, CX2341X_DEC_SET_PLAYBACK_SPEED, 7, data);
		IVTV_DEBUG_INFO("Setting Speed to 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
				data[0], data[1], data[2], data[3], data[4], data[5], data[6]);
	}
	if (single_step) {
		speed = (speed < 0) ? -1 : 1;
		ivtv_vapi(itv, CX2341X_DEC_STEP_VIDEO, 1, 0);
	}
	itv->speed = speed;
	return 0;
}

static int ivtv_validate_speed(int cur_speed, int new_speed)
{
	int fact = new_speed < 0 ? -1 : 1;
	int s;

	if (new_speed < 0) new_speed = -new_speed;
	if (cur_speed < 0) cur_speed = -cur_speed;

	if (cur_speed <= new_speed) {
		if (new_speed > 1500) return fact * 2000;
		if (new_speed > 1000) return fact * 1500;
	}
	else {
		if (new_speed >= 2000) return fact * 2000;
		if (new_speed >= 1500) return fact * 1500;
		if (new_speed >= 1000) return fact * 1000;
	}
	if (new_speed == 0) return 1000;
	if (new_speed == 1 || new_speed == 1000) return fact * new_speed;

	s = new_speed;
	new_speed = 1000 / new_speed;
	if (1000 / cur_speed == new_speed)
		new_speed += (cur_speed < s) ? -1 : 1;
	if (new_speed > 60) return 1000 / (fact * 60);
	return 1000 / (fact * new_speed);
}

static int ivtv_video_command(struct ivtv *itv, struct ivtv_open_id *id,
		struct video_command *vc, int try)
{
	struct ivtv_stream *s = &itv->streams[IVTV_DEC_STREAM_TYPE_MPG];

	if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
		return -EINVAL;

	switch (vc->cmd) {
	case VIDEO_CMD_PLAY: {
		vc->play.speed = ivtv_validate_speed(itv->speed, vc->play.speed);
		if (vc->play.speed < 0)
			vc->play.format = VIDEO_PLAY_FMT_GOP;
		if (try) break;

		if (ivtv_set_output_mode(itv, OUT_MPG) != OUT_MPG)
			return -EBUSY;
		return ivtv_start_decoding(id, vc->play.speed);
	}

	case VIDEO_CMD_STOP:
		if (vc->flags & VIDEO_CMD_STOP_IMMEDIATELY)
			vc->stop.pts = 0;
		if (try) break;
		if (atomic_read(&itv->decoding) == 0)
			return 0;
		if (itv->output_mode != OUT_MPG)
			return -EBUSY;

		itv->output_mode = OUT_NONE;
		return ivtv_stop_v4l2_decode_stream(s, vc->flags, vc->stop.pts);

	case VIDEO_CMD_FREEZE:
		if (try) break;
		if (itv->output_mode != OUT_MPG)
			return -EBUSY;
		if (atomic_read(&itv->decoding) > 0) {
			ivtv_vapi(itv, CX2341X_DEC_PAUSE_PLAYBACK, 1,
				(vc->flags & VIDEO_CMD_FREEZE_TO_BLACK) ? 1 : 0);
		}
		break;

	case VIDEO_CMD_CONTINUE:
		if (try) break;
		if (itv->output_mode != OUT_MPG)
			return -EBUSY;
		if (atomic_read(&itv->decoding) > 0) {
			ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 0);
		}
		break;

	default:
		return -EINVAL;
	}
	return 0;
}

static int ivtv_itvc(struct ivtv *itv, unsigned int cmd, void *arg)
{
	struct v4l2_register *regs = arg;
	unsigned long flags;
	volatile u8 __iomem *reg_start;

	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;
	if (regs->reg >= IVTV_REG_OFFSET && regs->reg < IVTV_REG_OFFSET + IVTV_REG_SIZE)
		reg_start = itv->reg_mem - IVTV_REG_OFFSET;
	else if (itv->has_cx23415 && regs->reg >= IVTV_DECODER_OFFSET &&
			regs->reg < IVTV_DECODER_OFFSET + IVTV_DECODER_SIZE)
		reg_start = itv->dec_mem - IVTV_DECODER_OFFSET;
	else if (regs->reg >= 0 && regs->reg < IVTV_ENCODER_SIZE)
		reg_start = itv->enc_mem;
	else
		return -EINVAL;

	spin_lock_irqsave(&ivtv_cards_lock, flags);
	if (cmd == VIDIOC_DBG_G_REGISTER) {
		regs->val = readl(regs->reg + reg_start);
	} else {
		writel(regs->val, regs->reg + reg_start);
	}
	spin_unlock_irqrestore(&ivtv_cards_lock, flags);
	return 0;
}

static int ivtv_get_fmt(struct ivtv *itv, int streamtype, struct v4l2_format *fmt)
{
	switch (fmt->type) {
	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		fmt->fmt.pix.left = itv->main_rect.left;
		fmt->fmt.pix.top = itv->main_rect.top;
		fmt->fmt.pix.width = itv->main_rect.width;
		fmt->fmt.pix.height = itv->main_rect.height;
		fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
		fmt->fmt.pix.field = V4L2_FIELD_INTERLACED;
		if (itv->output_mode == OUT_UDMA_YUV) {
			switch (itv->yuv_info.lace_mode & IVTV_YUV_MODE_MASK) {
			case IVTV_YUV_MODE_INTERLACED:
				fmt->fmt.pix.field = (itv->yuv_info.lace_mode & IVTV_YUV_SYNC_MASK) ?
					V4L2_FIELD_INTERLACED_BT : V4L2_FIELD_INTERLACED_TB;
				break;
			case IVTV_YUV_MODE_PROGRESSIVE:
				fmt->fmt.pix.field = V4L2_FIELD_NONE;
				break;
			default:
				fmt->fmt.pix.field = V4L2_FIELD_ANY;
				break;
			}
			fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_HM12;
			/* YUV size is (Y=(h*w) + UV=(h*(w/2))) */
			fmt->fmt.pix.sizeimage =
				fmt->fmt.pix.height * fmt->fmt.pix.width +
				fmt->fmt.pix.height * (fmt->fmt.pix.width / 2);
		}
		else if (itv->output_mode == OUT_YUV ||
				streamtype == IVTV_ENC_STREAM_TYPE_YUV ||
				streamtype == IVTV_DEC_STREAM_TYPE_YUV) {
			fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_HM12;
			/* YUV size is (Y=(h*w) + UV=(h*(w/2))) */
			fmt->fmt.pix.sizeimage =
				fmt->fmt.pix.height * fmt->fmt.pix.width +
				fmt->fmt.pix.height * (fmt->fmt.pix.width / 2);
		} else {
			fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
			fmt->fmt.pix.sizeimage = 128 * 1024;
		}
		break;

	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		fmt->fmt.pix.left = 0;
		fmt->fmt.pix.top = 0;
		fmt->fmt.pix.width = itv->params.width;
		fmt->fmt.pix.height = itv->params.height;
		fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
		fmt->fmt.pix.field = V4L2_FIELD_INTERLACED;
		if (streamtype == IVTV_ENC_STREAM_TYPE_YUV ||
				streamtype == IVTV_DEC_STREAM_TYPE_YUV) {
			fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_HM12;
			/* YUV size is (Y=(h*w) + UV=(h*(w/2))) */
			fmt->fmt.pix.sizeimage =
				fmt->fmt.pix.height * fmt->fmt.pix.width +
				fmt->fmt.pix.height * (fmt->fmt.pix.width / 2);
		} else {
			fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
			fmt->fmt.pix.sizeimage = 128 * 1024;
		}
		break;

	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		fmt->fmt.win.chromakey = itv->osd_color_key;
		fmt->fmt.win.global_alpha = itv->osd_global_alpha;
		break;

	case V4L2_BUF_TYPE_VBI_CAPTURE:
		fmt->fmt.vbi.sampling_rate = 27000000;
		fmt->fmt.vbi.offset = 248;
		fmt->fmt.vbi.samples_per_line = itv->vbi.raw_decoder_line_size - 4;
		fmt->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
		fmt->fmt.vbi.start[0] = itv->vbi.start[0];
		fmt->fmt.vbi.start[1] = itv->vbi.start[1];
		fmt->fmt.vbi.count[0] = fmt->fmt.vbi.count[1] = itv->vbi.count;
		break;

	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
	{
		struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;

		if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_OUTPUT))
			return -EINVAL;
		vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
		memset(vbifmt->reserved, 0, sizeof(vbifmt->reserved));
		memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
		if (itv->is_60hz) {
			vbifmt->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
			vbifmt->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
		} else {
			vbifmt->service_lines[0][23] = V4L2_SLICED_WSS_625;
			vbifmt->service_lines[0][16] = V4L2_SLICED_VPS;
		}
		vbifmt->service_set = get_service_set(vbifmt);
		break;
	}

	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
	{
		struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;

		vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
		memset(vbifmt->reserved, 0, sizeof(vbifmt->reserved));
		memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));

		if (streamtype == IVTV_DEC_STREAM_TYPE_VBI) {
			vbifmt->service_set = itv->is_50hz ? V4L2_SLICED_VBI_625 :
						 V4L2_SLICED_VBI_525;
			expand_service_set(vbifmt, itv->is_50hz);
			break;
		}

		itv->video_dec_func(itv, VIDIOC_G_FMT, fmt);
		vbifmt->service_set = get_service_set(vbifmt);
		break;
	}
	case V4L2_BUF_TYPE_VBI_OUTPUT:
	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
	default:
		return -EINVAL;
	}
	return 0;
}

static int ivtv_try_or_set_fmt(struct ivtv *itv, int streamtype,
		struct v4l2_format *fmt, int set_fmt)
{
	struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
	u16 set;

	if (fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
		struct v4l2_rect r;
		int field;

		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		field = fmt->fmt.pix.field;
		r.top = fmt->fmt.pix.top;
		r.left = fmt->fmt.pix.left;
		r.width = fmt->fmt.pix.width;
		r.height = fmt->fmt.pix.height;
		ivtv_get_fmt(itv, streamtype, fmt);
		if (itv->output_mode != OUT_UDMA_YUV) {
			/* TODO: would setting the rect also be valid for this mode? */
			fmt->fmt.pix.top = r.top;
			fmt->fmt.pix.left = r.left;
			fmt->fmt.pix.width = r.width;
			fmt->fmt.pix.height = r.height;
		}
		if (itv->output_mode == OUT_UDMA_YUV) {
			/* TODO: add checks for validity */
			fmt->fmt.pix.field = field;
		}
		if (set_fmt) {
			if (itv->output_mode == OUT_UDMA_YUV) {
				switch (field) {
				case V4L2_FIELD_NONE:
					itv->yuv_info.lace_mode = IVTV_YUV_MODE_PROGRESSIVE;
					break;
				case V4L2_FIELD_ANY:
					itv->yuv_info.lace_mode = IVTV_YUV_MODE_AUTO;
					break;
				case V4L2_FIELD_INTERLACED_BT:
					itv->yuv_info.lace_mode =
						IVTV_YUV_MODE_INTERLACED|IVTV_YUV_SYNC_ODD;
					break;
				case V4L2_FIELD_INTERLACED_TB:
				default:
					itv->yuv_info.lace_mode = IVTV_YUV_MODE_INTERLACED;
					break;
				}
				itv->yuv_info.lace_sync_field = (itv->yuv_info.lace_mode & IVTV_YUV_SYNC_MASK) == IVTV_YUV_SYNC_EVEN ? 0 : 1;

				/* Force update of yuv registers */
				itv->yuv_info.yuv_forced_update = 1;
				return 0;
			}
			if (!ivtv_vapi(itv, CX2341X_OSD_SET_FRAMEBUFFER_WINDOW, 4,
				 r.width, r.height, r.left, r.top))
				itv->main_rect = r;
			else
				return -EINVAL;
		}
		return 0;
	}

	if (fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) {
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		if (set_fmt) {
			itv->osd_color_key = fmt->fmt.win.chromakey;
			itv->osd_global_alpha = fmt->fmt.win.global_alpha;
			ivtv_set_osd_alpha(itv);
		}
		return 0;
	}

	// set window size
	if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
		int w = fmt->fmt.pix.width;
		int h = fmt->fmt.pix.height;

		if (w > 720) w = 720;
		else if (w < 1) w = 1;
		if (h > (itv->is_50hz ? 576 : 480)) h = (itv->is_50hz ? 576 : 480);
		else if (h < 2) h = 2;
		ivtv_get_fmt(itv, streamtype, fmt);
		fmt->fmt.pix.width = w;
		fmt->fmt.pix.height = h;
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18)
		if (itv->params.width != 720 || itv->params.height != (itv->is_50hz ? 576 : 480))
			itv->params.video_temporal_filter = 0;
		else
			itv->params.video_temporal_filter = 8;
#endif

		if (!set_fmt || (itv->params.width == w && itv->params.height == h))
			return 0;
		if (atomic_read(&itv->capturing) > 0)
			return -EBUSY;

		itv->params.width = w;
		itv->params.height = h;
		if (w != 720 || h != (itv->is_50hz ? 576 : 480))
			itv->params.video_temporal_filter = 0;
		else
			itv->params.video_temporal_filter = 8;
		itv->video_dec_func(itv, VIDIOC_S_FMT, fmt);
		return ivtv_get_fmt(itv, streamtype, fmt);
	}

	// set raw VBI format
	if (fmt->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
		if (set_fmt && streamtype == IVTV_ENC_STREAM_TYPE_VBI &&
		    itv->vbi.sliced_in->service_set &&
		    atomic_read(&itv->capturing) > 0) {
			return -EBUSY;
		}
		if (set_fmt) {
			itv->vbi.sliced_in->service_set = 0;
			itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
		}
		return ivtv_get_fmt(itv, streamtype, fmt);
	}

	// set sliced VBI output
	// In principle the user could request that only certain
	// VBI types are output and that the others are ignored.
	// I.e., suppress CC in the even fields or only output
	// WSS and no VPS. Currently though there is no choice.
	if (fmt->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
		return ivtv_get_fmt(itv, streamtype, fmt);

	// any else but sliced VBI capture is an error
	if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
		return -EINVAL;

	if (streamtype == IVTV_DEC_STREAM_TYPE_VBI)
		return ivtv_get_fmt(itv, streamtype, fmt);

	// set sliced VBI capture format
	vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
	memset(vbifmt->reserved, 0, sizeof(vbifmt->reserved));

	if (vbifmt->service_set)
		expand_service_set(vbifmt, itv->is_50hz);
	set = check_service_set(vbifmt, itv->is_50hz);
	vbifmt->service_set = get_service_set(vbifmt);

	if (!set_fmt)
		return 0;
	if (set == 0)
		return -EINVAL;
	if (atomic_read(&itv->capturing) > 0 && itv->vbi.sliced_in->service_set == 0) {
		return -EBUSY;
	}
	itv->video_dec_func(itv, VIDIOC_S_FMT, fmt);
	memcpy(itv->vbi.sliced_in, vbifmt, sizeof(*itv->vbi.sliced_in));
	return 0;
}

static int ivtv_internal_ioctls(struct file *filp, unsigned int cmd, void *arg)
{
	struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
	struct ivtv *itv = id->itv;
	struct v4l2_register *reg = arg;

	switch (cmd) {
	/* ioctls to allow direct access to the encoder registers for testing */
	case VIDIOC_DBG_G_REGISTER:
		IVTV_DEBUG_IOCTL("VIDIOC_DBG_G_REGISTER\n");
		if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
			return ivtv_itvc(itv, cmd, arg);
		if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
			return ivtv_i2c_id(itv, reg->match_chip, cmd, arg);
		return ivtv_call_i2c_client(itv, reg->match_chip, cmd, arg);

	case VIDIOC_DBG_S_REGISTER:
		IVTV_DEBUG_IOCTL("VIDIOC_DBG_S_REGISTER\n");
		if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
			return ivtv_itvc(itv, cmd, arg);
		if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
			return ivtv_i2c_id(itv, reg->match_chip, cmd, arg);
		return ivtv_call_i2c_client(itv, reg->match_chip, cmd, arg);

	case VIDIOC_G_CHIP_IDENT:
		IVTV_DEBUG_IOCTL("VIDIOC_G_CHIP_IDENT\n");
		if (v4l2_chip_match_host(reg->match_type, reg->match_chip)) {
			struct v4l2_chip_ident *chip = arg;

			chip->ident = itv->has_cx23415 ? V4L2_IDENT_CX23415 : V4L2_IDENT_CX23416;
			chip->revision = 0;
			return 0;
		}
		if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
			return ivtv_i2c_id(itv, reg->match_chip, cmd, arg);
		return ivtv_call_i2c_client(itv, reg->match_chip, cmd, arg);

	case VIDIOC_INT_S_AUDIO_ROUTING: {
		struct v4l2_routing *route = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_INT_S_AUDIO_ROUTING\n");
		ivtv_audio_set_route(itv, route);
		break;
	}

	case VIDIOC_INT_RESET:
		IVTV_DEBUG_IOCTL("VIDIOC_INT_RESET\n");
		ivtv_reset_ir_gpio(itv);
		break;

	default:
		IVTV_DEBUG_IOCTL( "Unknown internal IVTV command %08x\n", cmd);
		return -EINVAL;
	}
	return 0;
}

int ivtv_v4l2_ioctls(struct ivtv *itv, struct file *filp, unsigned int cmd, void *arg)
{
	struct ivtv_open_id *id = NULL;

	if (filp) id = (struct ivtv_open_id *)filp->private_data;

	switch (cmd) {
	case VIDIOC_QUERYCAP:{
		struct v4l2_capability *vcap = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_QUERYCAP\n");

		memset(vcap, 0, sizeof(*vcap));
		strcpy(vcap->driver, IVTV_DRIVER_NAME);     /* driver name */
		strcpy(vcap->card, itv->card_name); 	    /* card type */
		strcpy(vcap->bus_info, pci_name(itv->dev)); /* bus info... */
		vcap->version = IVTV_DRIVER_VERSION; 	    /* version */
		vcap->capabilities = itv->v4l2_cap; 	    /* capabilities */

		/* reserved.. must set to 0! */
		vcap->reserved[0] = vcap->reserved[1] =
			vcap->reserved[2] = vcap->reserved[3] = 0;
		break;
	}

	case VIDIOC_ENUMAUDIO:{
		struct v4l2_audio *vin = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_ENUMAUDIO\n");

		return ivtv_get_audio_input(itv, vin->index, vin);
	}

	case VIDIOC_G_AUDIO:{
		struct v4l2_audio *vin = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_G_AUDIO\n");
		vin->index = itv->audio_input;
		return ivtv_get_audio_input(itv, vin->index, vin);
	}

	case VIDIOC_S_AUDIO:{
		struct v4l2_audio *vout = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_AUDIO\n");

		if (vout->index >= itv->nof_audio_inputs)
			return -EINVAL;
		itv->audio_input = vout->index;
		ivtv_audio_set_io(itv);
		break;
	}

	case VIDIOC_ENUMAUDOUT:{
		struct v4l2_audioout *vin = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_ENUMAUDOUT\n");

		/* set it to defaults from our table */
		return ivtv_get_audio_output(itv, vin->index, vin);
	}

	case VIDIOC_G_AUDOUT:{
		struct v4l2_audioout *vin = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_G_AUDOUT\n");
		vin->index = 0;
		return ivtv_get_audio_output(itv, vin->index, vin);
	}

	case VIDIOC_S_AUDOUT:{
		struct v4l2_audioout *vout = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_AUDOUT\n");

		return ivtv_get_audio_output(itv, vout->index, vout);
	}

	case VIDIOC_ENUMINPUT:{
		struct v4l2_input *vin = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_ENUMINPUT\n");

		/* set it to defaults from our table */
		return ivtv_get_input(itv, vin->index, vin);
	}

	case VIDIOC_ENUMOUTPUT:{
		struct v4l2_output *vout = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_ENUMOUTPUT\n");

		return ivtv_get_output(itv, vout->index, vout);
	}

	case VIDIOC_TRY_FMT:
	case VIDIOC_S_FMT: {
		struct v4l2_format *fmt = arg;

		if (cmd == VIDIOC_S_FMT) {
			IVTV_DEBUG_IOCTL("VIDIOC_S_FMT\n");
		} else {
			IVTV_DEBUG_IOCTL("VIDIOC_TRY_FMT\n");
		}
		return ivtv_try_or_set_fmt(itv, id->type, fmt, cmd == VIDIOC_S_FMT);
	}

	case VIDIOC_G_FMT: {
		struct v4l2_format *fmt = arg;
		int type = fmt->type;

		IVTV_DEBUG_IOCTL("VIDIOC_G_FMT\n");
		memset(fmt, 0, sizeof(*fmt));
		fmt->type = type;
		return ivtv_get_fmt(itv, id->type, fmt);
	}

	case VIDIOC_S_CROP: {
		struct v4l2_crop *crop = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_CROP\n");
		if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
			return -EINVAL;
		return itv->video_dec_func(itv, VIDIOC_S_CROP, arg);
	}

	case VIDIOC_G_CROP: {
		struct v4l2_crop *crop = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_G_CROP\n");
		if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
			return -EINVAL;
		return itv->video_dec_func(itv, VIDIOC_G_CROP, arg);
	}

	case VIDIOC_ENUM_FMT: {
		static struct v4l2_fmtdesc formats[] = {
			{ 0, 0, 0,
			  "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12,
			  { 0, 0, 0, 0 }
			},
			{ 1, 0, V4L2_FMT_FLAG_COMPRESSED,
			  "MPEG", V4L2_PIX_FMT_MPEG,
			  { 0, 0, 0, 0 }
			}
		};
		struct v4l2_fmtdesc *fmt = arg;
		enum v4l2_buf_type type = fmt->type;

		switch (type) {
		case V4L2_BUF_TYPE_VIDEO_CAPTURE:
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT:
			if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
				return -EINVAL;
			break;
		default:
			return -EINVAL;
		}
		if (fmt->index > 1)
			return -EINVAL;
		*fmt = formats[fmt->index];
		fmt->type = type;
		return 0;
	}

	case VIDIOC_G_INPUT:{
		IVTV_DEBUG_IOCTL("VIDIOC_G_INPUT\n");

		*(int *)arg = itv->active_input;
		break;
	}

	case VIDIOC_S_INPUT:{
		int inp = *(int *)arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_INPUT\n");

		if (inp < 0 || inp >= itv->nof_inputs)
			return -EINVAL;

		if (inp == itv->active_input) {
			IVTV_DEBUG_INFO("Input unchanged\n");
			break;
		}
		IVTV_DEBUG_INFO("Changing input from %d to %d\n",
				itv->active_input, inp);

		itv->active_input = inp;
		/* Set the audio input to whatever is appropriate for the
		   input type. */
		itv->audio_input = itv->card->video_inputs[inp].audio_index;

		/* prevent others from messing with the streams until
		   we're finished changing inputs. */
		ivtv_mute(itv);
		ivtv_video_set_io(itv);
		ivtv_audio_set_io(itv);
		ivtv_unmute(itv);
		break;
	}

	case VIDIOC_G_OUTPUT:{
		IVTV_DEBUG_IOCTL("VIDIOC_G_OUTPUT\n");

		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		*(int *)arg = itv->active_output;
		break;
	}

	case VIDIOC_S_OUTPUT:{
		int outp = *(int *)arg;
		struct v4l2_routing route;

		IVTV_DEBUG_IOCTL("VIDIOC_S_OUTPUT\n");

		if (outp >= itv->card->nof_outputs)
			return -EINVAL;

		if (outp == itv->active_output) {
			IVTV_DEBUG_INFO("Output unchanged\n");
			break;
		}
		IVTV_DEBUG_INFO("Changing output from %d to %d\n",
			   itv->active_output, outp);

		itv->active_output = outp;
		route.input = SAA7127_INPUT_TYPE_NORMAL;
		route.output = itv->card->video_outputs[outp].video_output;
		ivtv_saa7127(itv, VIDIOC_INT_S_VIDEO_ROUTING, &route);
		break;
	}

	case VIDIOC_G_FREQUENCY:{
		struct v4l2_frequency *vf = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_G_FREQUENCY\n");

		if (vf->tuner != 0)
			return -EINVAL;
		ivtv_call_i2c_clients(itv, cmd, arg);
		break;
	}

	case VIDIOC_S_FREQUENCY:{
		struct v4l2_frequency vf = *(struct v4l2_frequency *)arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_FREQUENCY\n");

		if (vf.tuner != 0)
			return -EINVAL;

		ivtv_mute(itv);
		IVTV_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf.frequency);
		ivtv_call_i2c_clients(itv, cmd, &vf);
		ivtv_unmute(itv);
		break;
	}

	case VIDIOC_ENUMSTD:{
		struct v4l2_standard *vs = arg;
		int idx = vs->index;

		IVTV_DEBUG_IOCTL("VIDIOC_ENUMSTD\n");

		if (idx < 0 || idx >= ARRAY_SIZE(enum_stds))
			return -EINVAL;

		*vs = (enum_stds[idx].std & V4L2_STD_525_60) ?
				ivtv_std_60hz : ivtv_std_50hz;
		vs->index = idx;
		vs->id = enum_stds[idx].std;
		strcpy(vs->name, enum_stds[idx].name);
		break;
	}

	case VIDIOC_G_STD:{
		IVTV_DEBUG_IOCTL("VIDIOC_G_STD\n");
		*(v4l2_std_id *) arg = itv->std;
		break;
	}

	case VIDIOC_S_STD: {
		v4l2_std_id std = *(v4l2_std_id *) arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_STD\n");

		if ((std & V4L2_STD_ALL) == 0)
			return -EINVAL;

		if (std == itv->std)
			break;

		if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ||
		    atomic_read(&itv->capturing) > 0 ||
		    atomic_read(&itv->decoding) > 0) {
			/* Switching standard would turn off the radio or mess
			   with already running streams, prevent that by
			   returning EBUSY. */
			return -EBUSY;
		}

		itv->std = std;
		itv->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
		itv->params.is_50hz = itv->is_50hz = !itv->is_60hz;
		itv->params.width = 720;
		itv->params.height = itv->is_50hz ? 576 : 480;
		itv->vbi.count = itv->is_50hz ? 18 : 12;
		itv->vbi.start[0] = itv->is_50hz ? 6 : 10;
		itv->vbi.start[1] = itv->is_50hz ? 318 : 273;
		if (itv->hw_flags & IVTV_HW_CX25840) {
			itv->vbi.sliced_decoder_line_size = itv->is_60hz ? 272 : 284;
		}
		IVTV_DEBUG_INFO("Switching standard to %llx.\n", itv->std);

		/* Tuner */
		ivtv_call_i2c_clients(itv, VIDIOC_S_STD, &itv->std);

		if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
			/* set display standard */
			itv->std_out = std;
			itv->is_out_60hz = itv->is_60hz;
			itv->is_out_50hz = itv->is_50hz;
			ivtv_call_i2c_clients(itv, VIDIOC_INT_S_STD_OUTPUT, &itv->std_out);
			ivtv_vapi(itv, CX2341X_DEC_SET_STANDARD, 1, itv->is_out_50hz);
			itv->main_rect.left = itv->main_rect.top = 0;
			itv->main_rect.width = 720;
			itv->main_rect.height = itv->params.height;
			ivtv_vapi(itv, CX2341X_OSD_SET_FRAMEBUFFER_WINDOW, 4,
				720, itv->main_rect.height, 0, 0);
		}
		break;
	}

	case VIDIOC_S_TUNER: {	/* Setting tuner can only set audio mode */
		struct v4l2_tuner *vt = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_TUNER\n");

		if (vt->index != 0)
			return -EINVAL;

		ivtv_call_i2c_clients(itv, VIDIOC_S_TUNER, vt);
		break;
	}

	case VIDIOC_G_TUNER: {
		struct v4l2_tuner *vt = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_G_TUNER\n");

		if (vt->index != 0)
			return -EINVAL;

		memset(vt, 0, sizeof(*vt));
		ivtv_call_i2c_clients(itv, VIDIOC_G_TUNER, vt);

		if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) {
			strcpy(vt->name, "ivtv Radio Tuner");
			vt->type = V4L2_TUNER_RADIO;
		} else {
			strcpy(vt->name, "ivtv TV Tuner");
			vt->type = V4L2_TUNER_ANALOG_TV;
		}
		break;
	}

	case VIDIOC_G_SLICED_VBI_CAP: {
		struct v4l2_sliced_vbi_cap *cap = arg;
		int set = itv->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
		int f, l;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
		enum v4l2_buf_type type = cap->type;
#else
		enum v4l2_buf_type type = VIDIOC_G_SLICED_VBI_CAP;
#endif

		IVTV_DEBUG_IOCTL("VIDIOC_G_SLICED_VBI_CAP\n");
		memset(cap, 0, sizeof(*cap));
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
		cap->type = type;
#endif
		if (type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
			for (f = 0; f < 2; f++) {
				for (l = 0; l < 24; l++) {
					if (valid_service_line(f, l, itv->is_50hz)) {
						cap->service_lines[f][l] = set;
					}
				}
			}
			return 0;
		}
		if (type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
			if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_OUTPUT))
				return -EINVAL;
			if (itv->is_60hz) {
				cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
				cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
			} else {
				cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
				cap->service_lines[0][16] = V4L2_SLICED_VPS;
			}
			return 0;
		}
		return -EINVAL;
	}

	case VIDIOC_LOG_STATUS:
	{
		int has_output = itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT;
		struct v4l2_input vidin;
		struct v4l2_audio audin;
		int i;

		IVTV_INFO("=================  START STATUS CARD #%d  =================\n", itv->num);
		if (itv->hw_flags & IVTV_HW_TVEEPROM) {
			struct tveeprom tv;

			ivtv_read_eeprom(itv, &tv);
		}
		ivtv_call_i2c_clients(itv, VIDIOC_LOG_STATUS, NULL);
		ivtv_get_input(itv, itv->active_input, &vidin);
		ivtv_get_audio_input(itv, itv->audio_input, &audin);
		IVTV_INFO("Video Input: %s\n", vidin.name);
		IVTV_INFO("Audio Input: %s\n", audin.name);
		if (has_output) {
			struct v4l2_output vidout;
			struct v4l2_audioout audout;
			int mode = itv->output_mode;
			static const char * const output_modes[] = {
				"None",
				"MPEG Streaming",
				"YUV Streaming",
				"YUV Frames",
				"Passthrough",
			};

			ivtv_get_output(itv, itv->active_output, &vidout);
			ivtv_get_audio_output(itv, 0, &audout);
			IVTV_INFO("Video Output: %s\n", vidout.name);
			IVTV_INFO("Audio Output: %s\n", audout.name);
			if (mode < 0 || mode > OUT_PASSTHROUGH)
				mode = OUT_NONE;
			IVTV_INFO("Output Mode: %s\n", output_modes[mode]);
		}
		IVTV_INFO("Tuner: %s\n",
			test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? "Radio" : "TV");
		cx2341x_log_status(&itv->params, itv->name);
		IVTV_INFO("Status flags: 0x%08lx\n", itv->i_flags);
		for (i = 0; i < IVTV_MAX_STREAMS; i++) {
			struct ivtv_stream *s = &itv->streams[i];

			if (s->v4l2dev == NULL || s->buffers == 0)
				continue;
			IVTV_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n", s->name, s->s_flags,
					(s->buffers - s->q_free.buffers) * 100 / s->buffers,
					(s->buffers * s->buf_size) / 1024, s->buffers);
		}
		IVTV_INFO("Read MPEG/VBI: %lld/%lld bytes\n", itv->mpg_data_received, itv->vbi_data_inserted);
		IVTV_INFO("==================  END STATUS CARD #%d  ==================\n", itv->num);
		break;
	}

	default:
		IVTV_DEBUG_WARN("unknown VIDIOC command %08x\n", cmd);
		return -EINVAL;
	}
	return 0;
}

static int ivtv_ivtv_ioctls(struct file *filp, unsigned int cmd, void *arg)
{
	struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
	struct ivtv *itv = id->itv;
	int nonblocking = filp->f_flags & O_NONBLOCK;
	struct ivtv_stream *s = &itv->streams[id->type];

	switch (cmd) {
	case IVTV_IOC_DMA_FRAME: {
		struct ivtv_dma_frame *args = arg;

		IVTV_DEBUG_IOCTL("IVTV_IOC_DMA_FRAME\n");
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		if (args->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
			return -EINVAL;
		if (itv->output_mode == OUT_UDMA_YUV && args->y_source == NULL)
			return 0;
		if (ivtv_claim_stream(id, id->type)) {
			return -EBUSY;
		}
		if (ivtv_set_output_mode(itv, OUT_UDMA_YUV) != OUT_UDMA_YUV) {
			ivtv_release_stream(s);
			return -EBUSY;
		}
		if (args->y_source == NULL)
			return 0;
		return ivtv_yuv_prep_frame(itv, args);
	}

	case VIDEO_GET_PTS: {
		u32 data[CX2341X_MBOX_MAX_DATA];
		u64 *pts = arg;

		IVTV_DEBUG_IOCTL("VIDEO_GET_PTS\n");
		if (s->type < IVTV_DEC_STREAM_TYPE_MPG) {
			*pts = s->dma_pts;
			break;
		}
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;

		if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
			*pts = (u64) ((u64)itv->last_dec_timing[2] << 32) |
					(u64)itv->last_dec_timing[1];
			break;
		}
		*pts = 0;
		if (atomic_read(&itv->decoding)) {
			if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
				IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
				return -EIO;
			}
			memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
			set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
			*pts = (u64) ((u64) data[2] << 32) | (u64) data[1];
			/*timing->scr = (u64) (((u64) data[4] << 32) | (u64) (data[3]));*/
		}
		break;
	}

	case VIDEO_GET_FRAME_COUNT: {
		u32 data[CX2341X_MBOX_MAX_DATA];
		u64 *frame = arg;

		IVTV_DEBUG_IOCTL("VIDEO_GET_FRAME_COUNT\n");
		if (s->type < IVTV_DEC_STREAM_TYPE_MPG) {
			*frame = 0;
			break;
		}
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;

		if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
			*frame = itv->last_dec_timing[0];
			break;
		}
		*frame = 0;
		if (atomic_read(&itv->decoding)) {
			if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
				IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
				return -EIO;
			}
			memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
			set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
			*frame = data[0];
		}
		break;
	}

	case VIDEO_PLAY: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_PLAY\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_PLAY;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_STOP: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_STOP\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_STOP;
		vc.flags = VIDEO_CMD_STOP_TO_BLACK | VIDEO_CMD_STOP_IMMEDIATELY;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_FREEZE: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_FREEZE\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_FREEZE;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_CONTINUE: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_CONTINUE\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_CONTINUE;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_COMMAND:
	case VIDEO_TRY_COMMAND: {
		struct video_command *vc = arg;
		int try = (cmd == VIDEO_TRY_COMMAND);

		if (try)
			IVTV_DEBUG_IOCTL("VIDEO_TRY_COMMAND\n");
		else
			IVTV_DEBUG_IOCTL("VIDEO_COMMAND\n");
		return ivtv_video_command(itv, id, vc, try);
	}

	case VIDEO_GET_EVENT: {
		struct video_event *ev = arg;
		DEFINE_WAIT(wait);

		IVTV_DEBUG_IOCTL("VIDEO_GET_EVENT\n");
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		memset(ev, 0, sizeof(*ev));
		set_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags);

		while (1) {
			if (test_and_clear_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags))
				ev->type = VIDEO_EVENT_DECODER_STOPPED;
			else if (test_and_clear_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags)) {
				ev->type = VIDEO_EVENT_VSYNC;
				ev->timestamp = test_bit(IVTV_F_I_EV_VSYNC_FIELD, &itv->i_flags) ?
					1 : 0;
				clear_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags);
			}
			if (ev->type)
				return 0;
			if (nonblocking)
				return -EAGAIN;
			/* wait for event */
			prepare_to_wait(&itv->event_waitq, &wait, TASK_INTERRUPTIBLE);
			if ((itv->i_flags & (IVTV_F_I_EV_DEC_STOPPED|IVTV_F_I_EV_VSYNC)) == 0)
				schedule();
			finish_wait(&itv->event_waitq, &wait);
			if (signal_pending(current)) {
				/* return if a signal was received */
				IVTV_DEBUG_INFO("User stopped wait for event\n");
				return -EINTR;
			}
		}
		break;
	}

	case VIDIOC_G_ENC_INDEX: {
		struct v4l2_enc_idx *idx = arg;
		int i;

		IVTV_DEBUG_IOCTL("VIDIOC_G_ENC_INDEX\n");
		idx->entries = (itv->pgm_info_write_idx + IVTV_MAX_PGM_INDEX - itv->pgm_info_read_idx) %
					IVTV_MAX_PGM_INDEX;
		if (idx->entries > V4L2_ENC_IDX_ENTRIES)
			idx->entries = V4L2_ENC_IDX_ENTRIES;
		for (i = 0; i < idx->entries; i++) {
			idx->entry[i] = itv->pgm_info[(itv->pgm_info_read_idx + i) % IVTV_MAX_PGM_INDEX];
		}
		itv->pgm_info_read_idx = (itv->pgm_info_read_idx + idx->entries) % IVTV_MAX_PGM_INDEX;
		break;
	}

	case VIDIOC_ENCODER_CMD:
	case VIDIOC_TRY_ENCODER_CMD: {
		struct v4l2_encoder_cmd *enc = arg;
		int try = cmd == VIDIOC_TRY_ENCODER_CMD;

		if (try)
			IVTV_DEBUG_IOCTL("VIDIOC_TRY_ENCODER_CMD\n");
		else
			IVTV_DEBUG_IOCTL("VIDIOC_ENCODER_CMD\n");
		switch (enc->cmd) {
		case V4L2_ENC_CMD_START:
			return ivtv_start_capture(id);

		case V4L2_ENC_CMD_STOP:
			ivtv_stop_capture(id, enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
			return 0;

		case V4L2_ENC_CMD_PAUSE:
			if (!atomic_read(&itv->capturing))
				return -EPERM;
			if (test_and_set_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags))
				return 0;
			ivtv_mute(itv);
			ivtv_vapi(itv, CX2341X_ENC_PAUSE_ENCODER, 1, 0);
			break;

		case V4L2_ENC_CMD_RESUME:
			if (!atomic_read(&itv->capturing))
				return -EPERM;
			if (!test_and_clear_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags))
				return 0;
			ivtv_vapi(itv, CX2341X_ENC_PAUSE_ENCODER, 1, 1);
			ivtv_unmute(itv);
			break;
		}
		break;
	}

	case VIDIOC_G_FBUF: {
		struct v4l2_framebuffer *fb = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_G_FBUF\n");
		memset(fb, 0, sizeof(*fb));
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT_OVERLAY))
			break;
		fb->capability = V4L2_FBUF_CAP_EXTERNOVERLAY | V4L2_FBUF_CAP_CHROMAKEY |
			V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_GLOBAL_ALPHA;
		fb->fmt.pixelformat = itv->osd_pixelformat;
		fb->fmt.width = itv->osd_rect.width;
		fb->fmt.height = itv->osd_rect.height;
		fb->fmt.left = itv->osd_rect.left;
		fb->fmt.top = itv->osd_rect.top;
		fb->base = (void *)itv->osd_video_pbase;
		if (itv->osd_global_alpha_state)
			fb->flags |= V4L2_FBUF_FLAG_GLOBAL_ALPHA;
		if (itv->osd_local_alpha_state)
			fb->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
		if (itv->osd_color_key_state)
			fb->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
		break;
	}

	case VIDIOC_S_FBUF: {
		struct v4l2_framebuffer *fb = arg;

		IVTV_DEBUG_IOCTL("VIDIOC_S_FBUF\n");
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT_OVERLAY))
			break;
		itv->osd_global_alpha_state = (fb->flags & V4L2_FBUF_FLAG_GLOBAL_ALPHA) != 0;
		itv->osd_local_alpha_state = (fb->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) != 0;
		itv->osd_color_key_state = (fb->flags & V4L2_FBUF_FLAG_CHROMAKEY) != 0;
		break;
	}

	default:
		IVTV_DEBUG_WARN("unknown IVTV command %08x\n", cmd);
		return -EINVAL;
	}
	return 0;
}

static int ivtv_v4l2_do_ioctl(struct inode *inode, struct file *filp,
			      unsigned int cmd, void *arg)
{
	struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
	struct ivtv *itv = id->itv;

	IVTV_DEBUG_IOCTL("v4l2 ioctl 0x%08x\n", cmd);

	switch (cmd) {
	case VIDIOC_DBG_G_REGISTER:
	case VIDIOC_DBG_S_REGISTER:
	case VIDIOC_G_CHIP_IDENT:
	case VIDIOC_INT_S_AUDIO_ROUTING:
	case VIDIOC_INT_RESET:
		return ivtv_internal_ioctls(filp, cmd, arg);

	case VIDIOC_QUERYCAP:
	case VIDIOC_ENUMINPUT:
	case VIDIOC_G_INPUT:
	case VIDIOC_S_INPUT:
	case VIDIOC_ENUMOUTPUT:
	case VIDIOC_G_OUTPUT:
	case VIDIOC_S_OUTPUT:
	case VIDIOC_G_FMT:
	case VIDIOC_S_FMT:
	case VIDIOC_TRY_FMT:
	case VIDIOC_ENUM_FMT:
	case VIDIOC_G_CROP:
	case VIDIOC_S_CROP:
	case VIDIOC_G_FREQUENCY:
	case VIDIOC_S_FREQUENCY:
	case VIDIOC_ENUMSTD:
	case VIDIOC_G_STD:
	case VIDIOC_S_STD:
	case VIDIOC_S_TUNER:
	case VIDIOC_G_TUNER:
	case VIDIOC_ENUMAUDIO:
	case VIDIOC_S_AUDIO:
	case VIDIOC_G_AUDIO:
	case VIDIOC_ENUMAUDOUT:
	case VIDIOC_S_AUDOUT:
	case VIDIOC_G_AUDOUT:
	case VIDIOC_G_SLICED_VBI_CAP:
	case VIDIOC_LOG_STATUS:
		return ivtv_v4l2_ioctls(itv, filp, cmd, arg);

	case VIDIOC_QUERYMENU:
	case VIDIOC_QUERYCTRL:
	case VIDIOC_S_CTRL:
	case VIDIOC_G_CTRL:
	case VIDIOC_S_EXT_CTRLS:
	case VIDIOC_G_EXT_CTRLS:
	case VIDIOC_TRY_EXT_CTRLS:
		return ivtv_control_ioctls(itv, cmd, arg);

	case IVTV_IOC_DMA_FRAME:
	case VIDEO_GET_PTS:
	case VIDEO_GET_FRAME_COUNT:
	case VIDEO_GET_EVENT:
	case VIDEO_PLAY:
	case VIDEO_STOP:
	case VIDEO_FREEZE:
	case VIDEO_CONTINUE:
	case VIDEO_COMMAND:
	case VIDEO_TRY_COMMAND:
	case VIDIOC_G_ENC_INDEX:
	case VIDIOC_ENCODER_CMD:
	case VIDIOC_TRY_ENCODER_CMD:
	case VIDIOC_G_FBUF:
	case VIDIOC_S_FBUF:
		return ivtv_ivtv_ioctls(filp, cmd, arg);

	case 0x00005401:	/* Handle isatty() calls */
		return -EINVAL;
	default:
		return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
						   ivtv_v4l2_do_ioctl);
	}
	return 0;
}

int ivtv_v4l2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
		    unsigned long arg)
{
	struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
	struct ivtv *itv = id->itv;

	/* Filter dvb ioctls that cannot be handled by video_usercopy */
	switch (cmd) {
	case VIDEO_SELECT_SOURCE:
		IVTV_DEBUG_IOCTL("VIDEO_SELECT_SOURCE\n");
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		return ivtv_passthrough_mode(itv, arg == VIDEO_SOURCE_DEMUX);

	case AUDIO_SET_MUTE:
		IVTV_DEBUG_IOCTL("AUDIO_SET_MUTE\n");
		itv->speed_mute_audio = arg;
		return 0;

	case AUDIO_CHANNEL_SELECT:
		IVTV_DEBUG_IOCTL("AUDIO_CHANNEL_SELECT\n");
		if (arg > AUDIO_STEREO_SWAPPED)
			return -EINVAL;
		itv->audio_stereo_mode = arg;
		ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
		return 0;

	case AUDIO_BILINGUAL_CHANNEL_SELECT:
		IVTV_DEBUG_IOCTL("AUDIO_BILINGUAL_CHANNEL_SELECT\n");
		if (arg > AUDIO_STEREO_SWAPPED)
			return -EINVAL;
		itv->audio_bilingual_mode = arg;
		ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
		return 0;

	default:
		break;
	}
	return video_usercopy(inode, filp, cmd, arg, ivtv_v4l2_do_ioctl);
}