merge: http://www.linuxtv.org/hg/~hverkuil/v4l-dvb-saa7146-2

From: Mauro Carvalho Chehab <mchehab@redhat.com>

Priority: normal

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 25 insertions, 0 deletions

diff --git a/linux/include/media/cx25840.h b/linux/include/media/cx25840.h
index db431d513..2c3fbaa33 100644
--- a/linux/include/media/cx25840.h
+++ b/linux/include/media/cx25840.h
@@ -21,6 +21,18 @@
 #ifndef _CX25840_H_
 #define _CX25840_H_
 
+/* Note that the cx25840 driver requires that the bridge driver calls the
+   v4l2_subdev's init operation in order to load the driver's firmware.
+   Without this the audio standard detection will fail and you will
+   only get mono.
+
+   Since loading the firmware is often problematic when the driver is
+   compiled into the kernel I recommend postponing calling this function
+   until the first open of the video device. Another reason for
+   postponing it is that loading this firmware takes a long time (seconds)
+   due to the slow i2c bus speed. So it will speed up the boot process if
+   you can avoid loading the fw as long as the video device isn't used. */
+
 enum cx25840_video_input {
 	/* Composite video inputs In1-In8 */
 	CX25840_COMPOSITE1 = 1,
diff --git a/linux/include/media/v4l2-common.h b/linux/include/media/v4l2-common.h
index 95e74f187..0f864f8da 100644
--- a/linux/include/media/v4l2-common.h
+++ b/linux/include/media/v4l2-common.h
@@ -150,6 +150,19 @@ struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct i2c_adapter *adapter,
 void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
 		const struct v4l2_subdev_ops *ops);
 
+enum v4l2_i2c_tuner_type {
+	ADDRS_RADIO,	/* Radio tuner addresses */
+	ADDRS_DEMOD,	/* Demod tuner addresses */
+	ADDRS_TV,	/* TV tuner addresses */
+	/* TV tuner addresses if demod is present, this excludes
+	   addresses used by the demodulator from the list of
+	   candidates. */
+	ADDRS_TV_WITH_DEMOD,
+};
+/* Return a list of I2C tuner addresses to probe. Use only if the tuner
+   addresses are unknown. */
+const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type);
+
 /* ------------------------------------------------------------------------- */
 
 /* Internal ioctls */