V4L/DVB (11278): bttv: convert to v4l2_subdev since i2c autoprobing will disappear.

Since i2c autoprobing will disappear bttv needs to be converted to use
v4l2_subdev instead.

Without autoprobing the autoload module option has become obsolete. A warning
is generated if it is set, but it is otherwise ignored.

Since the bttv card definitions are of questionable value a new option was
introduced to allow the user to control which audio module is selected:
msp3400, tda7432 or tvaudio (or none at all).

By default bttv will use the card definitions and fallback on tvaudio as the
last resort.

If no audio device was found a warning is printed.

The saa6588 RDS device is now also explicitly probed since it is no longer
possible to autoprobe it. A new saa6588 module option was added to override
the card definition since I suspect more cards have this device than one
would guess from the card definitions.

Note that the probe addresses of the i2c modules are hardcoded in this
driver. Once all v4l drivers are converted to v4l2_subdev this will be
cleaned up. Such data belongs in an i2c driver header.

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

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/media/video/bt8xx/bttv.h b/drivers/media/video/bt8xx/bttv.h
index fac5f86356d..3d36daf206f 100644
--- a/drivers/media/video/bt8xx/bttv.h
+++ b/drivers/media/video/bt8xx/bttv.h
@@ -240,6 +240,9 @@ struct tvcard {
 	unsigned int no_tda7432:1;
 	unsigned int needs_tvaudio:1;
 	unsigned int msp34xx_alt:1;
+	/* Note: currently no card definition needs to mark the presence
+	   of a RDS saa6588 chip. If this is ever needed, then add a new
+	   'has_saa6588' bit here. */
 
 	unsigned int no_video:1; /* video pci function is unused */
 	unsigned int has_dvb:1;
@@ -355,7 +358,9 @@ void bttv_gpio_bits(struct bttv_core *core, u32 mask, u32 bits);
 /* ---------------------------------------------------------- */
 /* i2c                                                        */
 
-extern void bttv_call_i2c_clients(struct bttv *btv, unsigned int cmd, void *arg);
+#define bttv_call_all(btv, o, f, args...) \
+	v4l2_device_call_all(&btv->c.v4l2_dev, 0, o, f, ##args)
+
 extern int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for);
 extern int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1,
 			 unsigned char b2, int both);