V4L/DVB (12218): radio-si470x: conform to the RDS spec.

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

diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c
index 6710e3f..8e6dd84 100644 (file)
--- a/drivers/media/radio/radio-si470x.c
+++ b/drivers/media/radio/radio-si470x.c
@@ -1254,7 +1254,7 @@ static int si470x_vidioc_querycap(struct file *file, void *priv,
        usb_make_path(radio->usbdev, capability->bus_info, sizeof(capability->bus_info));
        capability->version = DRIVER_KERNEL_VERSION;
        capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
-               V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+               V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE;
 
        return 0;
 }
@@ -1413,7 +1413,8 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
        /* driver constants */
        strcpy(tuner->name, "FM");
        tuner->type = V4L2_TUNER_RADIO;
-       tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+       tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
+                           V4L2_TUNER_CAP_RDS;
 
        /* range limits */
        switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
@@ -1439,6 +1440,10 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
                tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
        else
                tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+       /* If there is a reliable method of detecting an RDS channel,
+          then this code should check for that before setting this
+          RDS subchannel. */
+       tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
 
        /* mono/stereo selector */
        if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0)