V4L/DVB (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoder

It took three core maintainers, over four years of work, eight new i2c
modules, eleven new V4L2 ioctls, three new DVB video ioctls, a Sliced
VBI API, a new MPEG encoder API, an enhanced DVB video MPEG decoding
API, major YUV/OSD contributions from Ian and John, web/wiki/svn/trac
support from Axel Thimm, (hardware) support from Hauppauge, support and
assistance from the v4l-dvb people and the many, many users of ivtv to
finally make it possible to merge this driver into the kernel.
Thank you all!

Signed-off-by: Kevin Thayer <nufan_wfk@yahoo.com>
Signed-off-by: Chris Kennedy <c@groovy.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: John P Harvey <john.p.harvey@btinternet.com>
Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 150 insertions, 0 deletions

diff --git a/drivers/media/video/ivtv/ivtv-video.c b/drivers/media/video/ivtv/ivtv-video.c
new file mode 100644
index 00000000000..77e42d13cde
--- /dev/null
+++ b/drivers/media/video/ivtv/ivtv-video.c
@@ -0,0 +1,150 @@
+/*
+    saa7127 interface functions
+    Copyright (C) 2004-2007  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-video.h"
+#include "ivtv-i2c.h"
+#include "ivtv-gpio.h"
+#include "ivtv-cards.h"
+#include <media/upd64031a.h>
+#include <media/upd64083.h>
+
+void ivtv_set_vps(struct ivtv *itv, int enabled, u8 vps1, u8 vps2, u8 vps3,
+		  u8 vps4, u8 vps5)
+{
+	struct v4l2_sliced_vbi_data data;
+
+	if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
+		return;
+	data.id = V4L2_SLICED_VPS;
+	data.field = 0;
+	data.line = enabled ? 16 : 0;
+	data.data[4] = vps1;
+	data.data[10] = vps2;
+	data.data[11] = vps3;
+	data.data[12] = vps4;
+	data.data[13] = vps5;
+	ivtv_saa7127(itv, VIDIOC_INT_S_VBI_DATA, &data);
+}
+
+void ivtv_set_cc(struct ivtv *itv, int mode, u8 cc1, u8 cc2, u8 cc3, u8 cc4)
+{
+	struct v4l2_sliced_vbi_data data;
+
+	if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
+		return;
+	data.id = V4L2_SLICED_CAPTION_525;
+	data.field = 0;
+	data.line = (mode & 1) ? 21 : 0;
+	data.data[0] = cc1;
+	data.data[1] = cc2;
+	ivtv_saa7127(itv, VIDIOC_INT_S_VBI_DATA, &data);
+	data.field = 1;
+	data.line = (mode & 2) ? 21 : 0;
+	data.data[0] = cc3;
+	data.data[1] = cc4;
+	ivtv_saa7127(itv, VIDIOC_INT_S_VBI_DATA, &data);
+}
+
+void ivtv_set_wss(struct ivtv *itv, int enabled, int mode)
+{
+	struct v4l2_sliced_vbi_data data;
+
+	if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
+		return;
+	/* When using a 50 Hz system, always turn on the
+	   wide screen signal with 4x3 ratio as the default.
+	   Turning this signal on and off can confuse certain
+	   TVs. As far as I can tell there is no reason not to
+	   transmit this signal. */
+	if ((itv->std & V4L2_STD_625_50) && !enabled) {
+		enabled = 1;
+		mode = 0x08;  /* 4x3 full format */
+	}
+	data.id = V4L2_SLICED_WSS_625;
+	data.field = 0;
+	data.line = enabled ? 23 : 0;
+	data.data[0] = mode & 0xff;
+	data.data[1] = (mode >> 8) & 0xff;
+	ivtv_saa7127(itv, VIDIOC_INT_S_VBI_DATA, &data);
+}
+
+void ivtv_encoder_enable(struct ivtv *itv, int enabled)
+{
+	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
+		ivtv_saa7127(itv, enabled ? VIDIOC_STREAMON : VIDIOC_STREAMOFF,
+				&enabled);
+	}
+}
+
+void ivtv_video_set_io(struct ivtv *itv)
+{
+	struct v4l2_routing route;
+	int inp = itv->active_input;
+	u32 type;
+
+	route.input = itv->card->video_inputs[inp].video_input;
+	route.output = 0;
+	itv->video_dec_func(itv, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+
+	type = itv->card->video_inputs[inp].video_type;
+
+	if (type == IVTV_CARD_INPUT_VID_TUNER) {
+		route.input = 0;  /* Tuner */
+	} else if (type < IVTV_CARD_INPUT_COMPOSITE1) {
+		route.input = 2;  /* S-Video */
+	} else {
+		route.input = 1;  /* Composite */
+	}
+
+	if (itv->card->hw_video & IVTV_HW_GPIO)
+		ivtv_gpio(itv, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+
+	if (itv->card->hw_video & IVTV_HW_UPD64031A) {
+		if (type == IVTV_CARD_INPUT_VID_TUNER ||
+		    type >= IVTV_CARD_INPUT_COMPOSITE1) {
+			/* Composite: GR on, connect to 3DYCS */
+			route.input = UPD64031A_GR_ON | UPD64031A_3DYCS_COMPOSITE;
+		} else {
+			/* S-Video: GR bypassed, turn it off */
+			route.input = UPD64031A_GR_OFF | UPD64031A_3DYCS_DISABLE;
+		}
+		route.input |= itv->card->gr_config;
+
+		ivtv_upd64031a(itv, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+	}
+
+	if (itv->card->hw_video & IVTV_HW_UPD6408X) {
+		route.input = UPD64083_YCS_MODE;
+		if (type > IVTV_CARD_INPUT_VID_TUNER &&
+		    type < IVTV_CARD_INPUT_COMPOSITE1) {
+			/* S-Video uses YCNR mode and internal Y-ADC, the upd64031a
+			   is not used. */
+			route.input |= UPD64083_YCNR_MODE;
+		}
+		else if (itv->card->hw_video & IVTV_HW_UPD64031A) {
+		  /* Use upd64031a output for tuner and composite(CX23416GYC only) inputs */
+		  if ((type == IVTV_CARD_INPUT_VID_TUNER)||
+		      (itv->card->type == IVTV_CARD_CX23416GYC)) {
+		    route.input |= UPD64083_EXT_Y_ADC;
+		  }
+		}
+		ivtv_upd64083(itv, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+	}
+}