V4L/DVB (5051): Pvrusb2: Better radio versus tv frequency handling
Separate track radio versus tv frequency so that when we switch modes
we can also switch to a sane frequency appropriate for the mode. Also
implement logic to automate mode switching in certain cases.
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 04e7469..38e1659 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -37,10 +37,9 @@
#include "pvrusb2-encoder.h"
#include "pvrusb2-debug.h"
-#define TV_MIN_FREQ 55250000L
-#define TV_MAX_FREQ 850000000L
-
-#define RADIO_MIN_FREQ 87000000L
+#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[] = {
@@ -95,6 +94,7 @@
static int tuner[PVR_NUM] = { [0 ... PVR_NUM-1] = -1 };
static int tolerance[PVR_NUM] = { [0 ... PVR_NUM-1] = 0 };
static int video_std[PVR_NUM] = { [0 ... PVR_NUM-1] = 0 };
+static int auto_mode_switch[PVR_NUM];
static int init_pause_msec = 0;
module_param(ctlchg, int, S_IRUGO|S_IWUSR);
@@ -112,6 +112,8 @@
MODULE_PARM_DESC(video_std,"specify initial video standard");
module_param_array(tolerance, int, NULL, 0444);
MODULE_PARM_DESC(tolerance,"specify stream error tolerance");
+module_param_array(auto_mode_switch, int, NULL, 0444);
+MODULE_PARM_DESC(auto_mode_switch,"Enable TV/Radio automatic mode switch based on freq");
#define PVR2_CTL_WRITE_ENDPOINT 0x01
#define PVR2_CTL_READ_ENDPOINT 0x81
@@ -258,6 +260,7 @@
[PVR2_SUBSYS_B_ENC_RUN] = "enc_run",
};
+static void pvr2_hdw_set_cur_freq(struct pvr2_hdw *,unsigned long);
static int pvr2_hdw_cmd_usbstream(struct pvr2_hdw *hdw,int runFl);
static int pvr2_hdw_commit_ctl_internal(struct pvr2_hdw *hdw);
static int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *hdw);
@@ -292,8 +295,21 @@
static int ctrl_channelfreq_set(struct pvr2_ctrl *cptr,int m,int v)
{
struct pvr2_hdw *hdw = cptr->hdw;
- if ((hdw->freqProgSlot > 0) && (hdw->freqProgSlot <= FREQTABLE_SIZE)) {
- hdw->freqTable[hdw->freqProgSlot-1] = v;
+ unsigned int slotId = hdw->freqProgSlot;
+ if ((slotId > 0) && (slotId <= FREQTABLE_SIZE)) {
+ hdw->freqTable[slotId-1] = v;
+ /* Handle side effects correctly - if we're tuned to this
+ slot, then forgot the slot id relation since the stored
+ frequency has been changed. */
+ if (hdw->freqSelector) {
+ if (hdw->freqSlotRadio == slotId) {
+ hdw->freqSlotRadio = 0;
+ }
+ } else {
+ if (hdw->freqSlotTelevision == slotId) {
+ hdw->freqSlotTelevision = 0;
+ }
+ }
}
return 0;
}
@@ -315,28 +331,32 @@
static int ctrl_channel_get(struct pvr2_ctrl *cptr,int *vp)
{
- *vp = cptr->hdw->freqSlot;
+ struct pvr2_hdw *hdw = cptr->hdw;
+ *vp = hdw->freqSelector ? hdw->freqSlotRadio : hdw->freqSlotTelevision;
return 0;
}
-static int ctrl_channel_set(struct pvr2_ctrl *cptr,int m,int v)
+static int ctrl_channel_set(struct pvr2_ctrl *cptr,int m,int slotId)
{
unsigned freq = 0;
struct pvr2_hdw *hdw = cptr->hdw;
- hdw->freqSlot = v;
- if ((hdw->freqSlot > 0) && (hdw->freqSlot <= FREQTABLE_SIZE)) {
- freq = hdw->freqTable[hdw->freqSlot-1];
+ if ((slotId < 0) || (slotId > FREQTABLE_SIZE)) return 0;
+ if (slotId > 0) {
+ freq = hdw->freqTable[slotId-1];
+ if (!freq) return 0;
+ pvr2_hdw_set_cur_freq(hdw,freq);
}
- if (freq && (freq != hdw->freqVal)) {
- hdw->freqVal = freq;
- hdw->freqDirty = !0;
+ if (hdw->freqSelector) {
+ hdw->freqSlotRadio = slotId;
+ } else {
+ hdw->freqSlotTelevision = slotId;
}
return 0;
}
static int ctrl_freq_get(struct pvr2_ctrl *cptr,int *vp)
{
- *vp = cptr->hdw->freqVal;
+ *vp = pvr2_hdw_get_cur_freq(cptr->hdw);
return 0;
}
@@ -352,10 +372,7 @@
static int ctrl_freq_set(struct pvr2_ctrl *cptr,int m,int v)
{
- struct pvr2_hdw *hdw = cptr->hdw;
- hdw->freqVal = v;
- hdw->freqDirty = !0;
- hdw->freqSlot = 0;
+ pvr2_hdw_set_cur_freq(cptr->hdw,v);
return 0;
}
@@ -381,13 +398,51 @@
return 0;
}
+static int ctrl_get_input(struct pvr2_ctrl *cptr,int *vp)
+{
+ *vp = cptr->hdw->input_val;
+ return 0;
+}
+
+static int ctrl_set_input(struct pvr2_ctrl *cptr,int m,int v)
+{
+ struct pvr2_hdw *hdw = cptr->hdw;
+
+ if (hdw->input_val != v) {
+ hdw->input_val = v;
+ hdw->input_dirty = !0;
+ }
+
+ /* Handle side effects - if we switch to a mode that needs the RF
+ tuner, then select the right frequency choice as well and mark
+ it dirty. */
+ if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
+ hdw->freqSelector = 0;
+ hdw->freqDirty = !0;
+ } else if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
+ hdw->freqSelector = 1;
+ hdw->freqDirty = !0;
+ }
+ return 0;
+}
+
+static int ctrl_isdirty_input(struct pvr2_ctrl *cptr)
+{
+ return cptr->hdw->input_dirty != 0;
+}
+
+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)
{
- if (cptr->hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
- return ((v >= RADIO_MIN_FREQ) && (v <= RADIO_MAX_FREQ));
- } else {
- return ((v >= TV_MIN_FREQ) && (v <= TV_MAX_FREQ));
- }
+ /* 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)
@@ -675,11 +730,11 @@
VCREATE_FUNCS(bass)
VCREATE_FUNCS(treble)
VCREATE_FUNCS(mute)
-VCREATE_FUNCS(input)
VCREATE_FUNCS(audiomode)
VCREATE_FUNCS(res_hor)
VCREATE_FUNCS(res_ver)
VCREATE_FUNCS(srate)
+VCREATE_FUNCS(automodeswitch)
/* Table definition of all controls which can be manipulated */
static const struct pvr2_ctl_info control_defs[] = {
@@ -779,6 +834,13 @@
.get_max_value = ctrl_vres_max_get,
.get_min_value = ctrl_vres_min_get,
},{
+ .v4l_id = V4L2_CID_AUDIO_MUTE,
+ .desc = "Automatic TV / Radio mode switch based on frequency",
+ .name = "auto_mode_switch",
+ .default_value = 0,
+ DEFREF(automodeswitch),
+ DEFBOOL,
+ },{
.v4l_id = V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
.default_value = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
.desc = "Audio Sampling Frequency",
@@ -789,7 +851,7 @@
.desc = "Tuner Frequency (Hz)",
.name = "frequency",
.internal_id = PVR2_CID_FREQUENCY,
- .default_value = 175250000L,
+ .default_value = 0,
.set_value = ctrl_freq_set,
.get_value = ctrl_freq_get,
.is_dirty = ctrl_freq_is_dirty,
@@ -812,6 +874,11 @@
.set_value = ctrl_channelfreq_set,
.get_value = ctrl_channelfreq_get,
DEFINT(TV_MIN_FREQ,TV_MAX_FREQ),
+ /* 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,
},{
.desc = "Channel Program ID",
.name = "freq_table_channel",
@@ -908,6 +975,83 @@
return hdw->serial_number;
}
+unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *hdw)
+{
+ return hdw->freqSelector ? hdw->freqValTelevision : hdw->freqValRadio;
+}
+
+/* Set the currently tuned frequency and account for all possible
+ driver-core side effects of this action. */
+void pvr2_hdw_set_cur_freq(struct pvr2_hdw *hdw,unsigned long val)
+{
+ int mode = 0;
+
+ /* If hdw->automodeswitch_val is set, then we do something clever:
+ Look at the desired frequency and see if it looks like FM or TV.
+ Execute a possible mode switch based on this result. Otherwise
+ we use the current input setting to determine which frequency
+ register we need to adjust. */
+ if (hdw->automodeswitch_val) {
+ /* Note that since FM RADIO frequency range sits *inside*
+ the TV spectrum that we must therefore check the radio
+ range first... */
+ if ((val >= RADIO_MIN_FREQ) && (val <= RADIO_MAX_FREQ)) {
+ mode = 1;
+ } else if ((val >= TV_MIN_FREQ) && (val <= TV_MAX_FREQ)) {
+ mode = 2;
+ }
+ } else {
+ if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
+ mode = 1;
+ } else {
+ mode = 2;
+ }
+ }
+
+ switch (mode) {
+ case 1:
+ if (hdw->freqSelector) {
+ /* Swing over to radio frequency selection */
+ hdw->freqSelector = 0;
+ hdw->freqDirty = !0;
+ }
+ if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
+ /* Force switch to radio mode */
+ hdw->input_val = PVR2_CVAL_INPUT_RADIO;
+ hdw->input_dirty = !0;
+ }
+ if (hdw->freqValRadio != val) {
+ hdw->freqValRadio = val;
+ hdw->freqSlotRadio = 0;
+ if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
+ hdw->freqDirty = !0;
+ }
+ }
+ break;
+ case 2:
+ if (!(hdw->freqSelector)) {
+ /* Swing over to television frequency selection */
+ hdw->freqSelector = 1;
+ hdw->freqDirty = !0;
+ }
+ if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
+ /* Force switch to television mode */
+ hdw->input_val = PVR2_CVAL_INPUT_TV;
+ hdw->input_dirty = !0;
+ }
+ if (hdw->freqValTelevision != val) {
+ hdw->freqValTelevision = val;
+ hdw->freqSlotTelevision = 0;
+ if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
+ hdw->freqDirty = !0;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+
int pvr2_hdw_get_unit_number(struct pvr2_hdw *hdw)
{
return hdw->unit_number;
@@ -1647,6 +1791,21 @@
cptr->info->set_value(cptr,~0,cptr->info->default_value);
}
+ /* Set up special default values for the television and radio
+ frequencies here. It's not really important what these defaults
+ are, but I set them to something usable in the Chicago area just
+ to make driver testing a little easier. */
+
+ /* US Broadcast channel 7 (175.25 MHz) */
+ hdw->freqValTelevision = 175250000L;
+ /* 104.3 MHz, a usable FM station for my area */
+ hdw->freqValRadio = 104300000L;
+
+ /* Default value for auto mode switch based on module option */
+ if ((hdw->unit_number >= 0) && (hdw->unit_number < PVR_NUM)) {
+ hdw->automodeswitch_val = auto_mode_switch[hdw->unit_number];
+ }
+
// Do not use pvr2_reset_ctl_endpoints() here. It is not
// thread-safe against the normal pvr2_send_request() mechanism.
// (We should make it thread safe).