V4L/DVB (10249): v4l2-common: added v4l2_i2c_tuner_addrs()

Add v4l2_i2c_tuner_addrs() to obtain the various I2C tuner addresses.
This will be used in several drivers, so make this a common function
as we do not want to have these I2C addresses all over the place.

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

1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index 0f450a73477a..26e162f13f7f 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -991,4 +991,40 @@ struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct i2c_adapter *adapter,
 }
 EXPORT_SYMBOL_GPL(v4l2_i2c_new_probed_subdev);
 
+/* 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)
+{
+        static const unsigned short radio_addrs[] = {
+#if defined(CONFIG_MEDIA_TUNER_TEA5761) || defined(CONFIG_MEDIA_TUNER_TEA5761_MODULE)
+                0x10,
+#endif
+                0x60,
+                I2C_CLIENT_END
+        };
+        static const unsigned short demod_addrs[] = {
+                0x42, 0x43, 0x4a, 0x4b,
+                I2C_CLIENT_END
+        };
+        static const unsigned short tv_addrs[] = {
+                0x42, 0x43, 0x4a, 0x4b,         /* tda8290 */
+                0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+                0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+                I2C_CLIENT_END
+        };
+
+        switch (type) {
+        case ADDRS_RADIO:
+                return radio_addrs;
+        case ADDRS_DEMOD:
+                return demod_addrs;
+        case ADDRS_TV:
+                return tv_addrs;
+        case ADDRS_TV_WITH_DEMOD:
+                return tv_addrs + 4;
+        }
+        return NULL;
+}
+EXPORT_SYMBOL_GPL(v4l2_i2c_tuner_addrs);
+
 #endif