[media] rtl2832_sdr: put complex U16 format behind module parameter

Move emulated format behind module parameter as those are not
supported. Format conversions will be on library eventually.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/dvb-frontends/rtl2832_sdr.c

@@ -35,6 +35,10 @@
 #include <linux/jiffies.h>
 #include <linux/math64.h>
 
+static bool rtl2832_sdr_emulated_fmt;
+module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644);
+MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
+
 #define MAX_BULK_BUFS            (10)
 #define BULK_BUFFER_SIZE         (128 * 512)
 
@@ -84,10 +88,10 @@ struct rtl2832_sdr_format {
 
 static struct rtl2832_sdr_format formats[] = {
 	{
-		.name		= "IQ U8",
+		.name		= "Complex U8",
 		.pixelformat	=  V4L2_SDR_FMT_CU8,
 	}, {
-		.name		= "IQ U16LE (emulated)",
+		.name		= "Complex U16LE (emulated)",
 		.pixelformat	= V4L2_SDR_FMT_CU16LE,
 	},
 };
@@ -139,6 +143,7 @@ struct rtl2832_sdr_state {
 
 	unsigned int f_adc, f_tuner;
 	u32 pixelformat;
+	unsigned int num_formats;
 
 	/* Controls */
 	struct v4l2_ctrl_handler hdl;
@@ -1211,7 +1216,7 @@ static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,
 
 	dev_dbg(&s->udev->dev, "%s:\n", __func__);
 
-	if (f->index >= NUM_FORMATS)
+	if (f->index >= s->num_formats)
 		return -EINVAL;
 
 	strlcpy(f->description, formats[f->index].name, sizeof(f->description));
@@ -1247,7 +1252,7 @@ static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,
 		return -EBUSY;
 
 	memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
-	for (i = 0; i < NUM_FORMATS; i++) {
+	for (i = 0; i < s->num_formats; i++) {
 		if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
 			s->pixelformat = f->fmt.sdr.pixelformat;
 			return 0;
@@ -1270,7 +1275,7 @@ static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,
 			(char *)&f->fmt.sdr.pixelformat);
 
 	memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
-	for (i = 0; i < NUM_FORMATS; i++) {
+	for (i = 0; i < s->num_formats; i++) {
 		if (formats[i].pixelformat == f->fmt.sdr.pixelformat)
 			return 0;
 	}
@@ -1414,6 +1419,9 @@ struct dvb_frontend *rtl2832_sdr_attach(struct dvb_frontend *fe,
 	s->f_adc = bands_adc[0].rangelow;
 	s->f_tuner = bands_fm[0].rangelow;
 	s->pixelformat =  V4L2_SDR_FMT_CU8;
+	s->num_formats = NUM_FORMATS;
+	if (rtl2832_sdr_emulated_fmt == false)
+		s->num_formats -= 1;
 
 	mutex_init(&s->v4l2_lock);
 	mutex_init(&s->vb_queue_lock);