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>
This commit is contained in:
Mike Isely 2006-12-27 23:30:13 -03:00 committed by Mauro Carvalho Chehab
parent 5549f54f46
commit 1bde02891b
3 changed files with 195 additions and 29 deletions

View file

@ -214,7 +214,6 @@ struct pvr2_hdw {
/* Frequency table */
unsigned int freqTable[FREQTABLE_SIZE];
unsigned int freqProgSlot;
unsigned int freqSlot;
/* Stuff for handling low level control interaction with device */
struct mutex ctl_lock_mutex;
@ -260,7 +259,11 @@ struct pvr2_hdw {
/* Tuner / frequency control stuff */
unsigned int tuner_type;
int tuner_updated;
unsigned int freqVal;
unsigned int freqValTelevision; /* Current freq for tv mode */
unsigned int freqValRadio; /* Current freq for radio mode */
unsigned int freqSlotTelevision; /* Current slot for tv mode */
unsigned int freqSlotRadio; /* Current slot for radio mode */
unsigned int freqSelector; /* 0=radio 1=television */
int freqDirty;
/* Video standard handling */
@ -323,6 +326,7 @@ struct pvr2_hdw {
VCREATE_DATA(res_hor);
VCREATE_DATA(res_ver);
VCREATE_DATA(srate);
VCREATE_DATA(automodeswitch);
#undef VCREATE_DATA
struct pvr2_ctld_info *mpeg_ctrl_info;
@ -331,6 +335,9 @@ struct pvr2_hdw {
unsigned int control_cnt;
};
/* This function gets the current frequency */
unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *);
#endif /* __PVRUSB2_HDW_INTERNAL_H */
/*

View file

@ -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 procreload = 0;
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_param_array(video_std, int, NULL, 0444);
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 @@ static const char *control_values_subsystem[] = {
[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_get(struct pvr2_ctrl *cptr,int *vp)
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_channelprog_set(struct pvr2_ctrl *cptr,int m,int v)
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 void ctrl_freq_clear_dirty(struct pvr2_ctrl *cptr)
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 @@ static int ctrl_vres_min_get(struct pvr2_ctrl *cptr,int *vp)
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(balance)
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[] = {
@ -778,6 +833,13 @@ static const struct pvr2_ctl_info control_defs[] = {
depending on the standard. */
.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,
@ -789,7 +851,7 @@ static const struct pvr2_ctl_info control_defs[] = {
.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 @@ static const struct pvr2_ctl_info control_defs[] = {
.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 @@ unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *hdw)
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 @@ static void pvr2_hdw_setup_low(struct pvr2_hdw *hdw)
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).

View file

@ -143,7 +143,7 @@ static void set_frequency(struct pvr2_hdw *hdw)
{
unsigned long fv;
struct v4l2_frequency freq;
fv = hdw->freqVal;
fv = pvr2_hdw_get_cur_freq(hdw);
pvr2_trace(PVR2_TRACE_CHIPS,"i2c v4l2 set_freq(%lu)",fv);
memset(&freq,0,sizeof(freq));
if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {