[media] saa7164: fix input and tuner compliance problems

- the frequency range was never set
- there was no initial frequency
- missing index/tuner checks
- inconsistent standard reporting
- removed unnecessary tuner type checks (the core handles that)
- clamp frequency to the valid frequency range as per the V4L2 spec

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/pci/saa7164/saa7164-encoder.c b/drivers/media/pci/saa7164/saa7164-encoder.c
index 10f4d77..ca936e2 100644 (file)
--- a/drivers/media/pci/saa7164/saa7164-encoder.c
+++ b/drivers/media/pci/saa7164/saa7164-encoder.c
@@ -246,11 +246,12 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 static int vidioc_enum_input(struct file *file, void *priv,
        struct v4l2_input *i)
 {
+       static const char * const inputs[] = {
+               "tuner", "composite", "svideo", "aux",
+               "composite 2", "svideo 2", "aux 2"
+       };
        int n;
 
-       char *inputs[] = { "tuner", "composite", "svideo", "aux",
-               "composite 2", "svideo 2", "aux 2" };
-
        if (i->index >= 7)
                return -EINVAL;
 
@@ -313,8 +314,9 @@ static int vidioc_g_tuner(struct file *file, void *priv,
                return -EINVAL;
 
        strcpy(t->name, "tuner");
-       t->type = V4L2_TUNER_ANALOG_TV;
        t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
+       t->rangelow = SAA7164_TV_MIN_FREQ;
+       t->rangehigh = SAA7164_TV_MAX_FREQ;
 
        dprintk(DBGLVL_ENC, "VIDIOC_G_TUNER: tuner type %d\n", t->type);
 
@@ -324,6 +326,9 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 static int vidioc_s_tuner(struct file *file, void *priv,
        const struct v4l2_tuner *t)
 {
+       if (0 != t->index)
+               return -EINVAL;
+
        /* Update the A/V core */
        return 0;
 }
@@ -334,7 +339,9 @@ static int vidioc_g_frequency(struct file *file, void *priv,
        struct saa7164_encoder_fh *fh = file->private_data;
        struct saa7164_port *port = fh->port;
 
-       f->type = V4L2_TUNER_ANALOG_TV;
+       if (f->tuner)
+               return -EINVAL;
+
        f->frequency = port->freq;
 
        return 0;
@@ -364,10 +371,8 @@ static int vidioc_s_frequency(struct file *file, void *priv,
        if (f->tuner != 0)
                return -EINVAL;
 
-       if (f->type != V4L2_TUNER_ANALOG_TV)
-               return -EINVAL;
-
-       port->freq = f->frequency;
+       port->freq = clamp(f->frequency,
+                          SAA7164_TV_MIN_FREQ, SAA7164_TV_MAX_FREQ);
 
        /* Update the hardware */
        if (port->nr == SAA7164_PORT_ENC1)
@@ -1012,6 +1017,7 @@ int saa7164_encoder_register(struct saa7164_port *port)
        port->video_format = EU_VIDEO_FORMAT_MPEG_2;
        port->audio_format = 0;
        port->video_resolution = 0;
+       port->freq = SAA7164_TV_MIN_FREQ;
 
        v4l2_ctrl_handler_init(hdl, 14);
        v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,

diff --git a/drivers/media/pci/saa7164/saa7164.h b/drivers/media/pci/saa7164/saa7164.h
index a2e9fa7..9e3256c 100644 (file)
--- a/drivers/media/pci/saa7164/saa7164.h
+++ b/drivers/media/pci/saa7164/saa7164.h
@@ -117,7 +117,11 @@
 #define DBGLVL_CPU 8192
 
 #define SAA7164_NORMS \
-       (V4L2_STD_NTSC_M |  V4L2_STD_NTSC_M_JP |  V4L2_STD_NTSC_443)
+       (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP)
+
+/* TV frequency range copied from tuner-core.c */
+#define SAA7164_TV_MIN_FREQ (44U * 16U)
+#define SAA7164_TV_MAX_FREQ (958U * 16U)
 
 enum port_t {
        SAA7164_MPEG_UNDEFINED = 0,