cx2341x.c

/*
 * cx2341x - generic code for cx23415/6 based devices
 *
 * Copyright (C) 2006 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>

#include <media/tuner.h>
#include <media/cx2341x.h>
#include <media/v4l2-common.h>

MODULE_DESCRIPTION("cx23415/6 driver");
MODULE_AUTHOR("Hans Verkuil");
MODULE_LICENSE("GPL");

static int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-1)");

const u32 cx2341x_mpeg_ctrls[] = {
	V4L2_CID_MPEG_CLASS,
	V4L2_CID_MPEG_STREAM_TYPE,
	V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
	V4L2_CID_MPEG_AUDIO_ENCODING,
	V4L2_CID_MPEG_AUDIO_L2_BITRATE,
	V4L2_CID_MPEG_AUDIO_MODE,
	V4L2_CID_MPEG_AUDIO_MODE_EXTENSION,
	V4L2_CID_MPEG_AUDIO_EMPHASIS,
	V4L2_CID_MPEG_AUDIO_CRC,
	V4L2_CID_MPEG_VIDEO_ENCODING,
	V4L2_CID_MPEG_VIDEO_ASPECT,
	V4L2_CID_MPEG_VIDEO_B_FRAMES,
	V4L2_CID_MPEG_VIDEO_GOP_SIZE,
	V4L2_CID_MPEG_VIDEO_GOP_CLOSURE,
	V4L2_CID_MPEG_VIDEO_PULLDOWN,
	V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
	V4L2_CID_MPEG_VIDEO_BITRATE,
	V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
	V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION,
	V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE,
	V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER,
	V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE,
	V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE,
	V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE,
	V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER,
	V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE,
	V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM,
	V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP,
	V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM,
	V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP,
	0
};


/* Map the control ID to the correct field in the cx2341x_mpeg_params
   struct. Return -EINVAL if the ID is unknown, else return 0. */
static int cx2341x_get_ctrl(struct cx2341x_mpeg_params *params,
		struct v4l2_ext_control *ctrl)
{
	switch (ctrl->id) {
	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
		ctrl->value = params->audio_sampling_freq;
		break;
	case V4L2_CID_MPEG_AUDIO_ENCODING:
		ctrl->value = params->audio_encoding;
		break;
	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
		ctrl->value = params->audio_l2_bitrate;
		break;
	case V4L2_CID_MPEG_AUDIO_MODE:
		ctrl->value = params->audio_mode;
		break;
	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
		ctrl->value = params->audio_mode_extension;
		break;
	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
		ctrl->value = params->audio_emphasis;
		break;
	case V4L2_CID_MPEG_AUDIO_CRC:
		ctrl->value = params->audio_crc;
		break;
	case V4L2_CID_MPEG_VIDEO_ENCODING:
		ctrl->value = params->video_encoding;
		break;
	case V4L2_CID_MPEG_VIDEO_ASPECT:
		ctrl->value = params->video_aspect;
		break;
	case V4L2_CID_MPEG_VIDEO_B_FRAMES:
		ctrl->value = params->video_b_frames;
		break;
	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
		ctrl->value = params->video_gop_size;
		break;
	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
		ctrl->value = params->video_gop_closure;
		break;
	case V4L2_CID_MPEG_VIDEO_PULLDOWN:
		ctrl->value = params->video_pulldown;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
		ctrl->value = params->video_bitrate_mode;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE:
		ctrl->value = params->video_bitrate;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
		ctrl->value = params->video_bitrate_peak;
		break;
	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION:
		ctrl->value = params->video_temporal_decimation;
		break;
	case V4L2_CID_MPEG_STREAM_TYPE:
		ctrl->value = params->stream_type;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE:
		ctrl->value = params->video_spatial_filter_mode;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER:
		ctrl->value = params->video_spatial_filter;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE:
		ctrl->value = params->video_luma_spatial_filter_type;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE:
		ctrl->value = params->video_chroma_spatial_filter_type;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE:
		ctrl->value = params->video_temporal_filter_mode;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER:
		ctrl->value = params->video_temporal_filter;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE:
		ctrl->value = params->video_median_filter_type;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP:
		ctrl->value = params->video_luma_median_filter_top;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM:
		ctrl->value = params->video_luma_median_filter_bottom;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP:
		ctrl->value = params->video_chroma_median_filter_top;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM:
		ctrl->value = params->video_chroma_median_filter_bottom;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

/* Map the control ID to the correct field in the cx2341x_mpeg_params
   struct. Return -EINVAL if the ID is unknown, else return 0. */
static int cx2341x_set_ctrl(struct cx2341x_mpeg_params *params,
		struct v4l2_ext_control *ctrl)
{
	switch (ctrl->id) {
	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
		params->audio_sampling_freq = ctrl->value;
		break;
	case V4L2_CID_MPEG_AUDIO_ENCODING:
		params->audio_encoding = ctrl->value;
		break;
	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
		params->audio_l2_bitrate = ctrl->value;
		break;
	case V4L2_CID_MPEG_AUDIO_MODE:
		params->audio_mode = ctrl->value;
		break;
	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
		params->audio_mode_extension = ctrl->value;
		break;
	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
		params->audio_emphasis = ctrl->value;
		break;
	case V4L2_CID_MPEG_AUDIO_CRC:
		params->audio_crc = ctrl->value;
		break;
	case V4L2_CID_MPEG_VIDEO_ASPECT:
		params->video_aspect = ctrl->value;
		break;
	case V4L2_CID_MPEG_VIDEO_B_FRAMES: {
		int b = ctrl->value + 1;
		int gop = params->video_gop_size;
		params->video_b_frames = ctrl->value;
		params->video_gop_size = b * ((gop + b - 1) / b);
		/* Max GOP size = 34 */
		while (params->video_gop_size > 34)
			params->video_gop_size -= b;
		break;
	}
	case V4L2_CID_MPEG_VIDEO_GOP_SIZE: {
		int b = params->video_b_frames + 1;
		int gop = ctrl->value;
		params->video_gop_size = b * ((gop + b - 1) / b);
		/* Max GOP size = 34 */
		while (params->video_gop_size > 34)
			params->video_gop_size -= b;
		ctrl->value = params->video_gop_size;
		break;
	}
	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
		params->video_gop_closure = ctrl->value;
		break;
	case V4L2_CID_MPEG_VIDEO_PULLDOWN:
		params->video_pulldown = ctrl->value;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
		/* MPEG-1 only allows CBR */
		if (params->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1 &&
		    ctrl->value != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
			return -EINVAL;
		params->video_bitrate_mode = ctrl->value;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE:
		params->video_bitrate = ctrl->value;
		break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
		params->video_bitrate_peak = ctrl->value;
		break;
	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION:
		params->video_temporal_decimation = ctrl->value;
		break;
	case V4L2_CID_MPEG_STREAM_TYPE:
		params->stream_type = ctrl->value;
		params->video_encoding =
			(params->stream_type == V4L2_MPEG_STREAM_TYPE_MPEG1_SS ||
			 params->stream_type == V4L2_MPEG_STREAM_TYPE_MPEG1_VCD) ?
			V4L2_MPEG_VIDEO_ENCODING_MPEG_1 : V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
		if (params->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1) {
			/* MPEG-1 implies CBR */
			params->video_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_CBR;
		}
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE:
		params->video_spatial_filter_mode = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER:
		params->video_spatial_filter = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE:
		params->video_luma_spatial_filter_type = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE:
		params->video_chroma_spatial_filter_type = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE:
		params->video_temporal_filter_mode = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER:
		params->video_temporal_filter = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE:
		params->video_median_filter_type = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP:
		params->video_luma_median_filter_top = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM:
		params->video_luma_median_filter_bottom = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP:
		params->video_chroma_median_filter_top = ctrl->value;
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM:
		params->video_chroma_median_filter_bottom = ctrl->value;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int cx2341x_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def)
{
	const char *name;

	qctrl->flags = 0;
	switch (qctrl->id) {
	/* MPEG controls */
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE:
		name = "Spatial Filter Mode";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER:
		name = "Spatial Filter";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE:
		name = "Spatial Luma Filter Type";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE:
		name = "Spatial Chroma Filter Type";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE:
		name = "Temporal Filter Mode";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER:
		name = "Temporal Filter";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE:
		name = "Median Filter Type";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP:
		name = "Median Luma Filter Maximum";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM:
		name = "Median Luma Filter Minimum";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP:
		name = "Median Chroma Filter Maximum";
		break;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM:
		name = "Median Chroma Filter Minimum";
		break;

	default:
		return v4l2_ctrl_query_fill(qctrl, min, max, step, def);
	}
	switch (qctrl->id) {
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE:
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE:
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE:
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE:
	case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE:
		qctrl->type = V4L2_CTRL_TYPE_MENU;
		min = 0;
		step = 1;
		break;
	default:
		qctrl->type = V4L2_CTRL_TYPE_INTEGER;
		break;
	}
	switch (qctrl->id) {
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE:
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE:
	case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE:
		qctrl->flags |= V4L2_CTRL_FLAG_UPDATE;
		break;
	}
	qctrl->minimum = min;
	qctrl->maximum = max;
	qctrl->step = step;
	qctrl->default_value = def;
	qctrl->reserved[0] = qctrl->reserved[1] = 0;
	snprintf(qctrl->name, sizeof(qctrl->name), name);
	return 0;
}

int cx2341x_ctrl_query(struct cx2341x_mpeg_params *params, struct v4l2_queryctrl *qctrl)
{
	int err;

	switch (qctrl->id) {
	case V4L2_CID_MPEG_AUDIO_ENCODING:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
				V4L2_MPEG_AUDIO_ENCODING_LAYER_2, 1,
				V4L2_MPEG_AUDIO_ENCODING_LAYER_2);

	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_L2_BITRATE_192K,
				V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1,
				V4L2_MPEG_AUDIO_L2_BITRATE_224K);

	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
		return -EINVAL;

	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
		err = v4l2_ctrl_query_fill_std(qctrl);
		if (err == 0 && params->audio_mode != V4L2_MPEG_AUDIO_MODE_JOINT_STEREO)
			qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return err;

	case V4L2_CID_MPEG_VIDEO_ENCODING:
		/* this setting is read-only for the cx2341x since the
		   V4L2_CID_MPEG_STREAM_TYPE really determines the
		   MPEG-1/2 setting */
		err = v4l2_ctrl_query_fill_std(qctrl);
		if (err == 0)
			qctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
		return err;

	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
		err = v4l2_ctrl_query_fill_std(qctrl);
		if (err == 0 && params->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1)
			qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return err;

	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
		err = v4l2_ctrl_query_fill_std(qctrl);
		if (err == 0 && params->video_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
			qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return err;

	/* CX23415/6 specific */
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE:
		return cx2341x_ctrl_query_fill(qctrl,
				V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL,
				V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO, 1,
				V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL);

	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER:
		cx2341x_ctrl_query_fill(qctrl, 0, 15, 1, 0);
		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
		if (params->video_spatial_filter_mode == V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE:
		cx2341x_ctrl_query_fill(qctrl,
				V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF,
				V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE, 1,
				V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF);
		if (params->video_spatial_filter_mode == V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE:
		cx2341x_ctrl_query_fill(qctrl,
				V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF,
				V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR, 1,
				V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF);
		if (params->video_spatial_filter_mode == V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE:
		return cx2341x_ctrl_query_fill(qctrl,
				V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL,
				V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO, 1,
				V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL);

	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER:
		cx2341x_ctrl_query_fill(qctrl, 0, 31, 1, 0);
		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
		if (params->video_temporal_filter_mode == V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE:
		return cx2341x_ctrl_query_fill(qctrl,
				V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF,
				V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG, 1,
				V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF);

	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP:
		cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, 255);
		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
		if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM:
		cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, 0);
		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
		if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP:
		cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, 255);
		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
		if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM:
		cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, 0);
		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
		if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF)
		       qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
		return 0;

	default:
		return v4l2_ctrl_query_fill_std(qctrl);

	}
}

const char **cx2341x_ctrl_get_menu(u32 id)
{
	static const char *mpeg_stream_type[] = {
		"MPEG-2 Program Stream",
		"",
		"MPEG-1 System Stream",
		"MPEG-2 DVD-compatible Stream",
		"MPEG-1 VCD-compatible Stream",
		"MPEG-2 SVCD-compatible Stream",
		NULL
	};

	static const char *cx2341x_video_spatial_filter_mode_menu[] = {
		"Manual",
		"Auto",
		NULL
	};

	static const char *cx2341x_video_luma_spatial_filter_type_menu[] = {
		"Off",
		"1D Horizontal",
		"1D Vertical",
		"2D H/V Separable",
		"2D Symmetric non-separable",
		NULL
	};

	static const char *cx2341x_video_chroma_spatial_filter_type_menu[] = {
		"Off",
		"1D Horizontal",
		NULL
	};

	static const char *cx2341x_video_temporal_filter_mode_menu[] = {
		"Manual",
		"Auto",
		NULL
	};

	static const char *cx2341x_video_median_filter_type_menu[] = {
		"Off",
		"Horizontal",
		"Vertical",
		"Horizontal/Vertical",
		"Diagonal",
		NULL
	};

	switch (id) {
	case V4L2_CID_MPEG_STREAM_TYPE:
		return mpeg_stream_type;
	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
		return NULL;
	case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE:
		return cx2341x_video_spatial_filter_mode_menu;
	case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE:
		return cx2341x_video_luma_spatial_filter_type_menu;
	case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE:
		return cx2341x_video_chroma_spatial_filter_type_menu;
	case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE:
		return cx2341x_video_temporal_filter_mode_menu;
	case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE:
		return cx2341x_video_median_filter_type_menu;
	default:
		return v4l2_ctrl_get_menu(id);
	}
}

static void cx2341x_calc_audio_properties(struct cx2341x_mpeg_params *params)
{
	params->audio_properties = (params->audio_sampling_freq << 0) |
		((3 - params->audio_encoding) << 2) |
		((1 + params->audio_l2_bitrate) << 4) |
		(params->audio_mode << 8) |
		(params->audio_mode_extension << 10) |
		(((params->audio_emphasis == V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17) ?
		  3 :
		  params->audio_emphasis) << 12) |
		(params->audio_crc << 14);
}

int cx2341x_ext_ctrls(struct cx2341x_mpeg_params *params,
		  struct v4l2_ext_controls *ctrls, int cmd)
{
	int err = 0;
	int i;

	if (cmd == VIDIOC_G_EXT_CTRLS) {
		for (i = 0; i < ctrls->count; i++) {
			struct v4l2_ext_control *ctrl = ctrls->controls + i;

			err = cx2341x_get_ctrl(params, ctrl);
			if (err) {
				ctrls->error_idx = i;
				break;
			}
		}
		return err;
	}
	for (i = 0; i < ctrls->count; i++) {
		struct v4l2_ext_control *ctrl = ctrls->controls + i;
		struct v4l2_queryctrl qctrl;
		const char **menu_items = NULL;

		qctrl.id = ctrl->id;
		err = cx2341x_ctrl_query(params, &qctrl);
		if (err)
			break;
		if (qctrl.type == V4L2_CTRL_TYPE_MENU)
			menu_items = cx2341x_ctrl_get_menu(qctrl.id);
		err = v4l2_ctrl_check(ctrl, &qctrl, menu_items);
		if (err)
			break;
		err = cx2341x_set_ctrl(params, ctrl);
		if (err)
			break;
	}
	if (err == 0 && params->video_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
			params->video_bitrate_peak < params->video_bitrate) {
		err = -ERANGE;
		ctrls->error_idx = ctrls->count;
	}
	if (err) {
		ctrls->error_idx = i;
	}
	else {
		cx2341x_calc_audio_properties(params);
	}
	return err;
}

void cx2341x_fill_defaults(struct cx2341x_mpeg_params *p)
{
	static struct cx2341x_mpeg_params default_params = {
	/* misc */
	.port = CX2341X_PORT_MEMORY,
	.width = 720,
	.height = 480,
	.is_50hz = 0,

	/* stream */
	.stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_PS,

	/* audio */
	.audio_sampling_freq = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
	.audio_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
	.audio_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_224K,
	.audio_mode = V4L2_MPEG_AUDIO_MODE_STEREO,
	.audio_mode_extension = V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4,
	.audio_emphasis = V4L2_MPEG_AUDIO_EMPHASIS_NONE,
	.audio_crc = V4L2_MPEG_AUDIO_CRC_NONE,

	/* video */
	.video_encoding = V4L2_MPEG_VIDEO_ENCODING_MPEG_2,
	.video_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3,
	.video_b_frames = 2,
	.video_gop_size = 12,
	.video_gop_closure = 1,
	.video_pulldown = 0,
	.video_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
	.video_bitrate = 6000000,
	.video_bitrate_peak = 8000000,
	.video_temporal_decimation = 0,

	/* encoding filters */
	.video_spatial_filter_mode = V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL,
	.video_spatial_filter = 0,
	.video_luma_spatial_filter_type = V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR,
	.video_chroma_spatial_filter_type = V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR,
	.video_temporal_filter_mode = V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL,
	.video_temporal_filter = 0,
	.video_median_filter_type = V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF,
	.video_luma_median_filter_top = 255,
	.video_luma_median_filter_bottom = 0,
	.video_chroma_median_filter_top = 255,
	.video_chroma_median_filter_bottom = 0,
	};

	*p = default_params;
	cx2341x_calc_audio_properties(p);
}

static int cx2341x_api(void *priv, cx2341x_mbox_func func, int cmd, int args, ...)
{
	u32 data[CX2341X_MBOX_MAX_DATA];
	va_list vargs;
	int i;

	va_start(vargs, args);

	for (i = 0; i < args; i++) {
		data[i] = va_arg(vargs, int);
	}
	va_end(vargs);
	return func(priv, cmd, args, 0, data);
}

int cx2341x_update(void *priv, cx2341x_mbox_func func,
		const struct cx2341x_mpeg_params *old, const struct cx2341x_mpeg_params *new)
{
	static int mpeg_stream_type[] = {
		0,	/* MPEG-2 PS */
		1,	/* MPEG-2 TS */
		2,	/* MPEG-1 SS */
		14,	/* DVD */
		11,	/* VCD */
		12,	/* SVCD */
	};

	int err = 0;

	cx2341x_api(priv, func, CX2341X_ENC_SET_OUTPUT_PORT, 2, new->port, 0);

	if (old == NULL || old->is_50hz != new->is_50hz) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_RATE, 1, new->is_50hz);
		if (err) return err;
	}

	if (old == NULL || old->width != new->width || old->height != new->height ||
			old->video_encoding != new->video_encoding) {
		u16 w = new->width;
		u16 h = new->height;

		if (new->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1) {
			w /= 2;
			h /= 2;
		}
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_SIZE, 2, h, w);
		if (err) return err;
	}

	if (old == NULL || old->stream_type != new->stream_type) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_STREAM_TYPE, 1, mpeg_stream_type[new->stream_type]);
		if (err) return err;
	}
	if (old == NULL || old->video_aspect != new->video_aspect) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_ASPECT_RATIO, 1, 1 + new->video_aspect);
		if (err) return err;
	}
	if (old == NULL || old->video_b_frames != new->video_b_frames ||
		old->video_gop_size != new->video_gop_size) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_GOP_PROPERTIES, 2,
				new->video_gop_size, new->video_b_frames + 1);
		if (err) return err;
	}
	if (old == NULL || old->video_gop_closure != new->video_gop_closure) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_GOP_CLOSURE, 1, new->video_gop_closure);
		if (err) return err;
	}
	if (old == NULL || old->video_pulldown != new->video_pulldown) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_3_2_PULLDOWN, 1, new->video_pulldown);
		if (err) return err;
	}
	if (old == NULL || old->audio_properties != new->audio_properties) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_AUDIO_PROPERTIES, 1, new->audio_properties);
		if (err) return err;
	}
	if (old == NULL || old->video_bitrate_mode != new->video_bitrate_mode ||
		old->video_bitrate != new->video_bitrate ||
		old->video_bitrate_peak != new->video_bitrate_peak) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_BIT_RATE, 5,
				new->video_bitrate_mode, new->video_bitrate,
				new->video_bitrate_peak / 400, 0, 0);
		if (err) return err;
	}
	if (old == NULL || old->video_spatial_filter_mode != new->video_spatial_filter_mode ||
		old->video_temporal_filter_mode != new->video_temporal_filter_mode ||
		old->video_median_filter_type != new->video_median_filter_type) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_DNR_FILTER_MODE, 2,
				new->video_spatial_filter_mode | (new->video_temporal_filter_mode << 1),
				new->video_median_filter_type);
		if (err) return err;
	}
	if (old == NULL ||
		old->video_luma_median_filter_bottom != new->video_luma_median_filter_bottom ||
		old->video_luma_median_filter_top != new->video_luma_median_filter_top ||
		old->video_chroma_median_filter_bottom != new->video_chroma_median_filter_bottom ||
		old->video_chroma_median_filter_top != new->video_chroma_median_filter_top) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_CORING_LEVELS, 4,
				new->video_luma_median_filter_bottom,
				new->video_luma_median_filter_top,
				new->video_chroma_median_filter_bottom,
				new->video_chroma_median_filter_top);
		if (err) return err;
	}
	if (old == NULL ||
		old->video_luma_spatial_filter_type != new->video_luma_spatial_filter_type ||
		old->video_chroma_spatial_filter_type != new->video_chroma_spatial_filter_type) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_SPATIAL_FILTER_TYPE, 2,
			new->video_luma_spatial_filter_type, new->video_chroma_spatial_filter_type);
		if (err) return err;
	}
	if (old == NULL ||
		old->video_spatial_filter != new->video_spatial_filter ||
		old->video_temporal_filter != new->video_temporal_filter) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_DNR_FILTER_PROPS, 2,
			new->video_spatial_filter, new->video_temporal_filter);
		if (err) return err;
	}
	if (old == NULL || old->video_temporal_decimation != new->video_temporal_decimation) {
		err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_DROP_RATE, 1,
			new->video_temporal_decimation);
		if (err) return err;
	}
	return 0;
}

static const char *cx2341x_menu_item(struct cx2341x_mpeg_params *p, u32 id)
{
	const char **menu = cx2341x_ctrl_get_menu(id);
	struct v4l2_ext_control ctrl;

	if (menu == NULL)
		goto invalid;
	ctrl.id = id;
	if (cx2341x_get_ctrl(p, &ctrl))
		goto invalid;
	while (ctrl.value-- && *menu) menu++;
	if (*menu == NULL)
		goto invalid;
	return *menu;

invalid:
	return "<invalid>";
}

void cx2341x_log_status(struct cx2341x_mpeg_params *p, int card_id)
{
	int is_mpeg1 = p->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;

	/* Stream */
	printk(KERN_INFO "cx2341x-%d: Stream: %s\n",
		card_id,
		cx2341x_menu_item(p, V4L2_CID_MPEG_STREAM_TYPE));

	/* Video */
	printk(KERN_INFO "cx2341x-%d: Video:  %dx%d, %d fps\n",
		card_id,
		p->width / (is_mpeg1 ? 2 : 1), p->height / (is_mpeg1 ? 2 : 1),
		p->is_50hz ? 25 : 30);
	printk(KERN_INFO "cx2341x-%d: Video:  %s, %s, %s, %d",
		card_id,
		cx2341x_menu_item(p, V4L2_CID_MPEG_VIDEO_ENCODING),
		cx2341x_menu_item(p, V4L2_CID_MPEG_VIDEO_ASPECT),
		cx2341x_menu_item(p, V4L2_CID_MPEG_VIDEO_BITRATE_MODE),
		p->video_bitrate);
	if (p->video_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
		printk(", Peak %d", p->video_bitrate_peak);
	}
	printk("\n");
	printk(KERN_INFO "cx2341x-%d: Video:  GOP Size %d, %d B-Frames, %sGOP Closure, %s3:2 Pulldown\n",
		card_id,
		p->video_gop_size, p->video_b_frames,
		p->video_gop_closure ? "" : "No ",
		p->video_pulldown ? "" : "No ");
	if (p->video_temporal_decimation) {
		printk(KERN_INFO "cx2341x-%d: Video: Temporal Decimation %d\n",
			card_id, p->video_temporal_decimation);
	}

	/* Audio */
	printk(KERN_INFO "cx2341x-%d: Audio:  %s, %s, %s, %s",
		card_id,
		cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ),
		cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_ENCODING),
		cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_L2_BITRATE),
		cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_MODE));
	if (p->audio_mode == V4L2_MPEG_AUDIO_MODE_JOINT_STEREO) {
		printk(", %s",
			cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_MODE_EXTENSION));
	}
	printk(", %s, %s\n",
		cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_EMPHASIS),
		cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_CRC));

	/* Encoding filters */
	printk(KERN_INFO "cx2341x-%d: Spatial Filter:  %s, Luma %s, Chroma %s, %d\n",
		card_id,
		cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE),
		cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE),
		cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE),
		p->video_spatial_filter);
	printk(KERN_INFO "cx2341x-%d: Temporal Filter: %s, %d\n",
		card_id,
		cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE),
		p->video_temporal_filter);
	printk(KERN_INFO "cx2341x-%d: Median Filter:   %s, Luma [%d, %d], Chroma [%d, %d]\n",
		card_id,
		cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE),
		p->video_luma_median_filter_bottom,
		p->video_luma_median_filter_top,
		p->video_chroma_median_filter_bottom,
		p->video_chroma_median_filter_top);
}

EXPORT_SYMBOL(cx2341x_fill_defaults);
EXPORT_SYMBOL(cx2341x_ctrl_query);
EXPORT_SYMBOL(cx2341x_ctrl_get_menu);
EXPORT_SYMBOL(cx2341x_ext_ctrls);
EXPORT_SYMBOL(cx2341x_update);
EXPORT_SYMBOL(cx2341x_log_status);
EXPORT_SYMBOL(cx2341x_mpeg_ctrls);

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */