V4L/DVB (4191): Add CX2341X MPEG encoder module.

Adds the cx2341x.c module that handles the programming of the Conexant
cx23415/6 MPEG encoder chip used by cx88-blackbird, pvrusb2 and ivtv.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 873 insertions, 0 deletions

diff --git a/drivers/media/video/cx2341x.c b/drivers/media/video/cx2341x.c
new file mode 100644
index 00000000000..f4d58d52e35
--- /dev/null
+++ b/drivers/media/video/cx2341x.c
@@ -0,0 +1,873 @@
+/*
+ * 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)");
+
+
+/* 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_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 */
+	.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, 1, 0);	/* 0 = Memory */
+
+	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);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
+