V4L/DVB (5084): Pvrusb2: Stop hardcoding frequency ranges

Rather than hardcoding frequency ranges everywhere, rely on
VIDIOC_G_TUNER results wherever we can.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 11890a0..819564c 100644 (file)
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -39,8 +39,6 @@
 
 #define TV_MIN_FREQ     55250000L
 #define TV_MAX_FREQ    850000000L
-#define RADIO_MIN_FREQ  87000000L
-#define RADIO_MAX_FREQ 108000000L
 
 struct usb_device_id pvr2_device_table[] = {
        [PVR2_HDW_TYPE_29XXX] = { USB_DEVICE(0x2040, 0x2900) },
@@ -432,34 +430,48 @@ static void ctrl_cleardirty_input(struct pvr2_ctrl *cptr)
        cptr->hdw->input_dirty = 0;
 }
 
-static int ctrl_freq_check(struct pvr2_ctrl *cptr,int v)
-{
-       /* Both ranges are simultaneously considered legal, in order to
-          permit implicit mode switching, i.e. set a frequency in the
-          other range and the mode will switch */
-       return (((v >= RADIO_MIN_FREQ) && (v <= RADIO_MAX_FREQ)) ||
-               ((v >= TV_MIN_FREQ) && (v <= TV_MAX_FREQ)));
-}
 
 static int ctrl_freq_max_get(struct pvr2_ctrl *cptr, int *vp)
 {
-       /* Actual maximum depends on radio/tv mode */
-       if (cptr->hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
-               *vp = RADIO_MAX_FREQ;
-       } else {
+       unsigned long fv;
+       struct pvr2_hdw *hdw = cptr->hdw;
+       if (hdw->tuner_signal_stale) {
+               pvr2_i2c_core_status_poll(hdw);
+       }
+       fv = hdw->tuner_signal_info.rangehigh;
+       if (!fv) {
+               /* Safety fallback */
                *vp = TV_MAX_FREQ;
+               return 0;
        }
+       if (hdw->tuner_signal_info.capability & V4L2_TUNER_CAP_LOW) {
+               fv = (fv * 125) / 2;
+       } else {
+               fv = fv * 62500;
+       }
+       *vp = fv;
        return 0;
 }
 
 static int ctrl_freq_min_get(struct pvr2_ctrl *cptr, int *vp)
 {
-       /* Actual minimum depends on radio/tv mode */
-       if (cptr->hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
-               *vp = RADIO_MIN_FREQ;
-       } else {
+       unsigned long fv;
+       struct pvr2_hdw *hdw = cptr->hdw;
+       if (hdw->tuner_signal_stale) {
+               pvr2_i2c_core_status_poll(hdw);
+       }
+       fv = hdw->tuner_signal_info.rangelow;
+       if (!fv) {
+               /* Safety fallback */
                *vp = TV_MIN_FREQ;
+               return 0;
        }
+       if (hdw->tuner_signal_info.capability & V4L2_TUNER_CAP_LOW) {
+               fv = (fv * 125) / 2;
+       } else {
+               fv = fv * 62500;
+       }
+       *vp = fv;
        return 0;
 }
 
@@ -630,9 +642,7 @@ static int ctrl_audio_modes_present_get(struct pvr2_ctrl *cptr,int *vp)
        int val = 0;
        unsigned int subchan;
        struct pvr2_hdw *hdw = cptr->hdw;
-       if (hdw->tuner_signal_stale) {
-               pvr2_i2c_core_status_poll(hdw);
-       }
+       pvr2_i2c_core_status_poll(hdw);
        subchan = hdw->tuner_signal_info.rxsubchans;
        if (subchan & V4L2_TUNER_SUB_MONO) {
                val |= (1 << V4L2_TUNER_MODE_MONO);
@@ -870,10 +880,9 @@ static const struct pvr2_ctl_info control_defs[] = {
                .get_value = ctrl_freq_get,
                .is_dirty = ctrl_freq_is_dirty,
                .clear_dirty = ctrl_freq_clear_dirty,
-               DEFINT(TV_MIN_FREQ,TV_MAX_FREQ),
+               DEFINT(0,0),
                /* Hook in check for input value (tv/radio) and adjust
                   max/min values accordingly */
-               .check_value = ctrl_freq_check,
                .get_max_value = ctrl_freq_max_get,
                .get_min_value = ctrl_freq_min_get,
        },{
@@ -887,10 +896,9 @@ static const struct pvr2_ctl_info control_defs[] = {
                .name = "freq_table_value",
                .set_value = ctrl_channelfreq_set,
                .get_value = ctrl_channelfreq_get,
-               DEFINT(TV_MIN_FREQ,TV_MAX_FREQ),
+               DEFINT(0,0),
                /* Hook in check for input value (tv/radio) and adjust
                   max/min values accordingly */
-               .check_value = ctrl_freq_check,
                .get_max_value = ctrl_freq_max_get,
                .get_min_value = ctrl_freq_min_get,
        },{