mirror of https://gitee.com/openkylin/linux.git
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
Mauro Carvalho Chehab
parent
5549f54f46
commit
1bde02891b
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@ -214,7 +214,6 @@ struct pvr2_hdw {
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/* Frequency table */
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unsigned int freqTable[FREQTABLE_SIZE];
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unsigned int freqProgSlot;
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unsigned int freqSlot;
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/* Stuff for handling low level control interaction with device */
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struct mutex ctl_lock_mutex;
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@ -260,7 +259,11 @@ struct pvr2_hdw {
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/* Tuner / frequency control stuff */
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unsigned int tuner_type;
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int tuner_updated;
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unsigned int freqVal;
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unsigned int freqValTelevision; /* Current freq for tv mode */
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unsigned int freqValRadio; /* Current freq for radio mode */
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unsigned int freqSlotTelevision; /* Current slot for tv mode */
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unsigned int freqSlotRadio; /* Current slot for radio mode */
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unsigned int freqSelector; /* 0=radio 1=television */
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int freqDirty;
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/* Video standard handling */
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@ -323,6 +326,7 @@ struct pvr2_hdw {
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VCREATE_DATA(res_hor);
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VCREATE_DATA(res_ver);
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VCREATE_DATA(srate);
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VCREATE_DATA(automodeswitch);
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#undef VCREATE_DATA
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struct pvr2_ctld_info *mpeg_ctrl_info;
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@ -331,6 +335,9 @@ struct pvr2_hdw {
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unsigned int control_cnt;
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};
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/* This function gets the current frequency */
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unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *);
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#endif /* __PVRUSB2_HDW_INTERNAL_H */
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/*
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@ -37,10 +37,9 @@
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#include "pvrusb2-encoder.h"
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#include "pvrusb2-debug.h"
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#define TV_MIN_FREQ 55250000L
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#define TV_MAX_FREQ 850000000L
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#define RADIO_MIN_FREQ 87000000L
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#define TV_MIN_FREQ 55250000L
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#define TV_MAX_FREQ 850000000L
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#define RADIO_MIN_FREQ 87000000L
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#define RADIO_MAX_FREQ 108000000L
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struct usb_device_id pvr2_device_table[] = {
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@ -95,6 +94,7 @@ static int procreload = 0;
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static int tuner[PVR_NUM] = { [0 ... PVR_NUM-1] = -1 };
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static int tolerance[PVR_NUM] = { [0 ... PVR_NUM-1] = 0 };
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static int video_std[PVR_NUM] = { [0 ... PVR_NUM-1] = 0 };
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static int auto_mode_switch[PVR_NUM];
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static int init_pause_msec = 0;
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module_param(ctlchg, int, S_IRUGO|S_IWUSR);
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@ -112,6 +112,8 @@ module_param_array(video_std, int, NULL, 0444);
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MODULE_PARM_DESC(video_std,"specify initial video standard");
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module_param_array(tolerance, int, NULL, 0444);
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MODULE_PARM_DESC(tolerance,"specify stream error tolerance");
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module_param_array(auto_mode_switch, int, NULL, 0444);
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MODULE_PARM_DESC(auto_mode_switch,"Enable TV/Radio automatic mode switch based on freq");
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#define PVR2_CTL_WRITE_ENDPOINT 0x01
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#define PVR2_CTL_READ_ENDPOINT 0x81
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@ -258,6 +260,7 @@ static const char *control_values_subsystem[] = {
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[PVR2_SUBSYS_B_ENC_RUN] = "enc_run",
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};
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static void pvr2_hdw_set_cur_freq(struct pvr2_hdw *,unsigned long);
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static int pvr2_hdw_cmd_usbstream(struct pvr2_hdw *hdw,int runFl);
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static int pvr2_hdw_commit_ctl_internal(struct pvr2_hdw *hdw);
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static int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *hdw);
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@ -292,8 +295,21 @@ static int ctrl_channelfreq_get(struct pvr2_ctrl *cptr,int *vp)
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static int ctrl_channelfreq_set(struct pvr2_ctrl *cptr,int m,int v)
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{
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struct pvr2_hdw *hdw = cptr->hdw;
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if ((hdw->freqProgSlot > 0) && (hdw->freqProgSlot <= FREQTABLE_SIZE)) {
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hdw->freqTable[hdw->freqProgSlot-1] = v;
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unsigned int slotId = hdw->freqProgSlot;
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if ((slotId > 0) && (slotId <= FREQTABLE_SIZE)) {
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hdw->freqTable[slotId-1] = v;
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/* Handle side effects correctly - if we're tuned to this
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slot, then forgot the slot id relation since the stored
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frequency has been changed. */
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if (hdw->freqSelector) {
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if (hdw->freqSlotRadio == slotId) {
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hdw->freqSlotRadio = 0;
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}
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} else {
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if (hdw->freqSlotTelevision == slotId) {
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hdw->freqSlotTelevision = 0;
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}
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}
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}
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return 0;
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}
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@ -315,28 +331,32 @@ static int ctrl_channelprog_set(struct pvr2_ctrl *cptr,int m,int v)
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static int ctrl_channel_get(struct pvr2_ctrl *cptr,int *vp)
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{
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*vp = cptr->hdw->freqSlot;
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struct pvr2_hdw *hdw = cptr->hdw;
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*vp = hdw->freqSelector ? hdw->freqSlotRadio : hdw->freqSlotTelevision;
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return 0;
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}
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static int ctrl_channel_set(struct pvr2_ctrl *cptr,int m,int v)
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static int ctrl_channel_set(struct pvr2_ctrl *cptr,int m,int slotId)
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{
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unsigned freq = 0;
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struct pvr2_hdw *hdw = cptr->hdw;
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hdw->freqSlot = v;
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if ((hdw->freqSlot > 0) && (hdw->freqSlot <= FREQTABLE_SIZE)) {
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freq = hdw->freqTable[hdw->freqSlot-1];
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if ((slotId < 0) || (slotId > FREQTABLE_SIZE)) return 0;
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if (slotId > 0) {
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freq = hdw->freqTable[slotId-1];
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if (!freq) return 0;
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pvr2_hdw_set_cur_freq(hdw,freq);
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}
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if (freq && (freq != hdw->freqVal)) {
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hdw->freqVal = freq;
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hdw->freqDirty = !0;
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if (hdw->freqSelector) {
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hdw->freqSlotRadio = slotId;
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} else {
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hdw->freqSlotTelevision = slotId;
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}
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return 0;
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}
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static int ctrl_freq_get(struct pvr2_ctrl *cptr,int *vp)
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{
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*vp = cptr->hdw->freqVal;
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*vp = pvr2_hdw_get_cur_freq(cptr->hdw);
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return 0;
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}
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@ -352,10 +372,7 @@ static void ctrl_freq_clear_dirty(struct pvr2_ctrl *cptr)
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static int ctrl_freq_set(struct pvr2_ctrl *cptr,int m,int v)
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{
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struct pvr2_hdw *hdw = cptr->hdw;
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hdw->freqVal = v;
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hdw->freqDirty = !0;
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hdw->freqSlot = 0;
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pvr2_hdw_set_cur_freq(cptr->hdw,v);
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return 0;
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}
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@ -381,13 +398,51 @@ static int ctrl_vres_min_get(struct pvr2_ctrl *cptr,int *vp)
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return 0;
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}
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static int ctrl_get_input(struct pvr2_ctrl *cptr,int *vp)
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{
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*vp = cptr->hdw->input_val;
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return 0;
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}
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static int ctrl_set_input(struct pvr2_ctrl *cptr,int m,int v)
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{
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struct pvr2_hdw *hdw = cptr->hdw;
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if (hdw->input_val != v) {
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hdw->input_val = v;
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hdw->input_dirty = !0;
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}
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/* Handle side effects - if we switch to a mode that needs the RF
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tuner, then select the right frequency choice as well and mark
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it dirty. */
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if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
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hdw->freqSelector = 0;
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hdw->freqDirty = !0;
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} else if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
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hdw->freqSelector = 1;
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hdw->freqDirty = !0;
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}
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return 0;
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}
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static int ctrl_isdirty_input(struct pvr2_ctrl *cptr)
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{
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return cptr->hdw->input_dirty != 0;
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}
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static void ctrl_cleardirty_input(struct pvr2_ctrl *cptr)
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{
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cptr->hdw->input_dirty = 0;
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}
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static int ctrl_freq_check(struct pvr2_ctrl *cptr,int v)
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{
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if (cptr->hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
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return ((v >= RADIO_MIN_FREQ) && (v <= RADIO_MAX_FREQ));
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} else {
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return ((v >= TV_MIN_FREQ) && (v <= TV_MAX_FREQ));
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}
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/* Both ranges are simultaneously considered legal, in order to
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permit implicit mode switching, i.e. set a frequency in the
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other range and the mode will switch */
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return (((v >= RADIO_MIN_FREQ) && (v <= RADIO_MAX_FREQ)) ||
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((v >= TV_MIN_FREQ) && (v <= TV_MAX_FREQ)));
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}
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static int ctrl_freq_max_get(struct pvr2_ctrl *cptr, int *vp)
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@ -675,11 +730,11 @@ VCREATE_FUNCS(balance)
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VCREATE_FUNCS(bass)
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VCREATE_FUNCS(treble)
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VCREATE_FUNCS(mute)
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VCREATE_FUNCS(input)
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VCREATE_FUNCS(audiomode)
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VCREATE_FUNCS(res_hor)
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VCREATE_FUNCS(res_ver)
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VCREATE_FUNCS(srate)
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VCREATE_FUNCS(automodeswitch)
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/* Table definition of all controls which can be manipulated */
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static const struct pvr2_ctl_info control_defs[] = {
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@ -778,6 +833,13 @@ static const struct pvr2_ctl_info control_defs[] = {
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depending on the standard. */
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.get_max_value = ctrl_vres_max_get,
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.get_min_value = ctrl_vres_min_get,
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},{
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.v4l_id = V4L2_CID_AUDIO_MUTE,
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.desc = "Automatic TV / Radio mode switch based on frequency",
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.name = "auto_mode_switch",
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.default_value = 0,
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DEFREF(automodeswitch),
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DEFBOOL,
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},{
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.v4l_id = V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
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.default_value = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
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@ -789,7 +851,7 @@ static const struct pvr2_ctl_info control_defs[] = {
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.desc = "Tuner Frequency (Hz)",
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.name = "frequency",
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.internal_id = PVR2_CID_FREQUENCY,
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.default_value = 175250000L,
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.default_value = 0,
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.set_value = ctrl_freq_set,
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.get_value = ctrl_freq_get,
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.is_dirty = ctrl_freq_is_dirty,
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@ -812,6 +874,11 @@ static const struct pvr2_ctl_info control_defs[] = {
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.set_value = ctrl_channelfreq_set,
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.get_value = ctrl_channelfreq_get,
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DEFINT(TV_MIN_FREQ,TV_MAX_FREQ),
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/* Hook in check for input value (tv/radio) and adjust
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max/min values accordingly */
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.check_value = ctrl_freq_check,
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.get_max_value = ctrl_freq_max_get,
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.get_min_value = ctrl_freq_min_get,
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},{
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.desc = "Channel Program ID",
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.name = "freq_table_channel",
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@ -908,6 +975,83 @@ unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *hdw)
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return hdw->serial_number;
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}
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unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *hdw)
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{
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return hdw->freqSelector ? hdw->freqValTelevision : hdw->freqValRadio;
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}
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/* Set the currently tuned frequency and account for all possible
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driver-core side effects of this action. */
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void pvr2_hdw_set_cur_freq(struct pvr2_hdw *hdw,unsigned long val)
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{
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int mode = 0;
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/* If hdw->automodeswitch_val is set, then we do something clever:
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Look at the desired frequency and see if it looks like FM or TV.
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Execute a possible mode switch based on this result. Otherwise
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we use the current input setting to determine which frequency
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register we need to adjust. */
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if (hdw->automodeswitch_val) {
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/* Note that since FM RADIO frequency range sits *inside*
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the TV spectrum that we must therefore check the radio
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range first... */
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if ((val >= RADIO_MIN_FREQ) && (val <= RADIO_MAX_FREQ)) {
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mode = 1;
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} else if ((val >= TV_MIN_FREQ) && (val <= TV_MAX_FREQ)) {
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mode = 2;
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}
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} else {
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if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
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mode = 1;
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} else {
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mode = 2;
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}
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}
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switch (mode) {
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case 1:
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if (hdw->freqSelector) {
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/* Swing over to radio frequency selection */
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hdw->freqSelector = 0;
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hdw->freqDirty = !0;
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}
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if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
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/* Force switch to radio mode */
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hdw->input_val = PVR2_CVAL_INPUT_RADIO;
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hdw->input_dirty = !0;
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}
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if (hdw->freqValRadio != val) {
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hdw->freqValRadio = val;
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hdw->freqSlotRadio = 0;
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if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
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hdw->freqDirty = !0;
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}
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}
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break;
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case 2:
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if (!(hdw->freqSelector)) {
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/* Swing over to television frequency selection */
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hdw->freqSelector = 1;
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hdw->freqDirty = !0;
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}
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if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
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/* Force switch to television mode */
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hdw->input_val = PVR2_CVAL_INPUT_TV;
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hdw->input_dirty = !0;
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}
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if (hdw->freqValTelevision != val) {
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hdw->freqValTelevision = val;
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hdw->freqSlotTelevision = 0;
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if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
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hdw->freqDirty = !0;
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}
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}
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break;
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default:
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break;
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}
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}
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int pvr2_hdw_get_unit_number(struct pvr2_hdw *hdw)
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{
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return hdw->unit_number;
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@ -1647,6 +1791,21 @@ static void pvr2_hdw_setup_low(struct pvr2_hdw *hdw)
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cptr->info->set_value(cptr,~0,cptr->info->default_value);
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}
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/* Set up special default values for the television and radio
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frequencies here. It's not really important what these defaults
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are, but I set them to something usable in the Chicago area just
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to make driver testing a little easier. */
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/* US Broadcast channel 7 (175.25 MHz) */
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hdw->freqValTelevision = 175250000L;
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/* 104.3 MHz, a usable FM station for my area */
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hdw->freqValRadio = 104300000L;
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/* Default value for auto mode switch based on module option */
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if ((hdw->unit_number >= 0) && (hdw->unit_number < PVR_NUM)) {
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hdw->automodeswitch_val = auto_mode_switch[hdw->unit_number];
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}
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// Do not use pvr2_reset_ctl_endpoints() here. It is not
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// thread-safe against the normal pvr2_send_request() mechanism.
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// (We should make it thread safe).
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@ -143,7 +143,7 @@ static void set_frequency(struct pvr2_hdw *hdw)
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{
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unsigned long fv;
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struct v4l2_frequency freq;
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fv = hdw->freqVal;
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fv = pvr2_hdw_get_cur_freq(hdw);
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pvr2_trace(PVR2_TRACE_CHIPS,"i2c v4l2 set_freq(%lu)",fv);
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memset(&freq,0,sizeof(freq));
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if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
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