}
+static void pvr2_context_reset_input_limits(struct pvr2_context *mp)
+{
+ unsigned int tmsk,mmsk;
+ struct pvr2_channel *cp;
+ struct pvr2_hdw *hdw = mp->hdw;
+ mmsk = pvr2_hdw_get_input_available(hdw);
+ tmsk = mmsk;
+ for (cp = mp->mc_first; cp; cp = cp->mc_next) {
+ if (!cp->input_mask) continue;
+ tmsk &= cp->input_mask;
+ }
+ pvr2_hdw_set_input_allowed(hdw,mmsk,tmsk);
+ pvr2_hdw_commit_ctl(hdw);
+}
+
+
static void pvr2_context_enter(struct pvr2_context *mp)
{
mutex_lock(&mp->mutex);
{
struct pvr2_context *mp = cp->mc_head;
pvr2_context_enter(mp);
+ cp->input_mask = 0;
pvr2_channel_disclaim_stream(cp);
+ pvr2_context_reset_input_limits(mp);
if (cp->mc_next) {
cp->mc_next->mc_prev = cp->mc_prev;
} else {
}
+int pvr2_channel_limit_inputs(struct pvr2_channel *cp,unsigned int cmsk)
+{
+ unsigned int tmsk,mmsk;
+ int ret = 0;
+ struct pvr2_channel *p2;
+ struct pvr2_hdw *hdw = cp->hdw;
+
+ mmsk = pvr2_hdw_get_input_available(hdw);
+ cmsk &= mmsk;
+ if (cmsk == cp->input_mask) {
+ /* No change; nothing to do */
+ return 0;
+ }
+
+ pvr2_context_enter(cp->mc_head);
+ do {
+ if (!cmsk) {
+ cp->input_mask = 0;
+ pvr2_context_reset_input_limits(cp->mc_head);
+ break;
+ }
+ tmsk = mmsk;
+ for (p2 = cp->mc_head->mc_first; p2; p2 = p2->mc_next) {
+ if (p2 == cp) continue;
+ if (!p2->input_mask) continue;
+ tmsk &= p2->input_mask;
+ }
+ if (!(tmsk & cmsk)) {
+ ret = -EPERM;
+ break;
+ }
+ tmsk &= cmsk;
+ if ((ret = pvr2_hdw_set_input_allowed(hdw,mmsk,tmsk)) != 0) {
+ /* Internal failure changing allowed list; probably
+ should not happen, but react if it does. */
+ break;
+ }
+ cp->input_mask = cmsk;
+ pvr2_hdw_commit_ctl(hdw);
+ } while (0);
+ pvr2_context_exit(cp->mc_head);
+ return ret;
+}
+
+
+unsigned int pvr2_channel_get_limited_inputs(struct pvr2_channel *cp)
+{
+ return cp->input_mask;
+}
+
+
int pvr2_channel_claim_stream(struct pvr2_channel *cp,
struct pvr2_context_stream *sp)
{
struct pvr2_channel *mc_prev;
struct pvr2_context_stream *stream;
struct pvr2_hdw *hdw;
+ unsigned int input_mask;
void (*check_func)(struct pvr2_channel *);
};
void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *);
void pvr2_channel_done(struct pvr2_channel *);
+int pvr2_channel_limit_inputs(struct pvr2_channel *,unsigned int);
+unsigned int pvr2_channel_get_limited_inputs(struct pvr2_channel *);
int pvr2_channel_claim_stream(struct pvr2_channel *,
struct pvr2_context_stream *);
struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
static int pvr2_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
{
- /* TO DO: This function will call into the core and request for
- * input to be set to 'dtv' if (acquire) and if it isn't set already.
- *
- * If (!acquire) then we should do nothing -- don't switch inputs
- * again unless the analog side of the driver requests the bus.
- */
- return 0;
+ struct pvr2_dvb_adapter *adap = fe->dvb->priv;
+ return pvr2_channel_limit_inputs(
+ &adap->channel,
+ (acquire ? (1 << PVR2_CVAL_INPUT_DTV) : 0));
}
static int pvr2_dvb_adapter_init(struct pvr2_dvb_adapter *adap)
{
struct pvr2_hdw *hdw = adap->channel.hdw;
struct pvr2_dvb_props *dvb_props = hdw->hdw_desc->dvb_props;
- int ret;
+ int ret = 0;
if (dvb_props == NULL) {
err("fe_props not defined!");
return -EINVAL;
}
- /* FIXME: This code should be moved into the core,
- * and should only be called if we don't already have
- * control of the bus.
- *
- * We can't call "pvr2_dvb_bus_ctrl(adap->fe, 1)" from here,
- * because adap->fe isn't defined yet.
- */
- ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_by_id(hdw,
- PVR2_CID_INPUT),
- PVR2_CVAL_INPUT_DTV);
- if (ret != 0)
+ ret = pvr2_channel_limit_inputs(
+ &adap->channel,
+ (1 << PVR2_CVAL_INPUT_DTV));
+ if (ret) {
+ err("failed to grab control of dtv input (code=%d)",
+ ret);
return ret;
-
- pvr2_hdw_commit_ctl(hdw);
-
+ }
if (dvb_props->frontend_attach == NULL) {
err("frontend_attach not defined!");
- return -EINVAL;
+ ret = -EINVAL;
+ goto done;
}
if ((dvb_props->frontend_attach(adap) == 0) && (adap->fe)) {
err("frontend registration failed!");
dvb_frontend_detach(adap->fe);
adap->fe = NULL;
- return -ENODEV;
+ ret = -ENODEV;
+ goto done;
}
if (dvb_props->tuner_attach)
} else {
err("no frontend was attached!");
- return -ENODEV;
+ ret = -ENODEV;
+ return ret;
}
- return 0;
+ done:
+ pvr2_channel_limit_inputs(&adap->channel, 0);
+ return ret;
}
static int pvr2_dvb_frontend_exit(struct pvr2_dvb_adapter *adap)
int v4l_minor_number_vbi;
int v4l_minor_number_radio;
- /* Bit mask of PVR2_CVAL_INPUT choices which are valid */
+ /* Bit mask of PVR2_CVAL_INPUT choices which are valid for the hardware */
unsigned int input_avail_mask;
+ /* Bit mask of PVR2_CVAL_INPUT choices which are currenly allowed */
+ unsigned int input_allowed_mask;
/* Location of eeprom or a negative number if none */
int eeprom_addr;
};
+static int pvr2_hdw_set_input(struct pvr2_hdw *hdw,int v);
static void pvr2_hdw_state_sched(struct pvr2_hdw *);
static int pvr2_hdw_state_eval(struct pvr2_hdw *);
static void pvr2_hdw_set_cur_freq(struct pvr2_hdw *,unsigned long);
static int ctrl_check_input(struct pvr2_ctrl *cptr,int v)
{
- return ((1 << v) & cptr->hdw->input_avail_mask) != 0;
+ return ((1 << v) & cptr->hdw->input_allowed_mask) != 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->input_val == PVR2_CVAL_INPUT_DTV)) {
- hdw->freqSelector = 1;
- hdw->freqDirty = !0;
- }
- return 0;
+ return pvr2_hdw_set_input(cptr->hdw,v);
}
static int ctrl_isdirty_input(struct pvr2_ctrl *cptr)
if (hdw_desc->flag_has_composite) m |= 1 << PVR2_CVAL_INPUT_COMPOSITE;
if (hdw_desc->flag_has_fmradio) m |= 1 << PVR2_CVAL_INPUT_RADIO;
hdw->input_avail_mask = m;
+ hdw->input_allowed_mask = hdw->input_avail_mask;
/* If not a hybrid device, pathway_state never changes. So
initialize it here to what it should forever be. */
}
+static unsigned int print_input_mask(unsigned int msk,
+ char *buf,unsigned int acnt)
+{
+ unsigned int idx,ccnt;
+ unsigned int tcnt = 0;
+ for (idx = 0; idx < ARRAY_SIZE(control_values_input); idx++) {
+ if (!((1 << idx) & msk)) continue;
+ ccnt = scnprintf(buf+tcnt,
+ acnt-tcnt,
+ "%s%s",
+ (tcnt ? ", " : ""),
+ control_values_input[idx]);
+ tcnt += ccnt;
+ }
+ return tcnt;
+}
+
+
static const char *pvr2_pathway_state_name(int id)
{
switch (id) {
"state: %s",
pvr2_get_state_name(hdw->master_state));
case 4: {
+ unsigned int tcnt = 0;
+ unsigned int ccnt;
+
+ ccnt = scnprintf(buf,
+ acnt,
+ "Hardware supported inputs: ");
+ tcnt += ccnt;
+ tcnt += print_input_mask(hdw->input_avail_mask,
+ buf+tcnt,
+ acnt-tcnt);
+ if (hdw->input_avail_mask != hdw->input_allowed_mask) {
+ ccnt = scnprintf(buf+tcnt,
+ acnt-tcnt,
+ "; allowed inputs: ");
+ tcnt += ccnt;
+ tcnt += print_input_mask(hdw->input_allowed_mask,
+ buf+tcnt,
+ acnt-tcnt);
+ }
+ return tcnt;
+ }
+ case 5: {
struct pvr2_stream_stats stats;
if (!hdw->vid_stream) break;
pvr2_stream_get_stats(hdw->vid_stream,
}
+unsigned int pvr2_hdw_get_input_allowed(struct pvr2_hdw *hdw)
+{
+ return hdw->input_allowed_mask;
+}
+
+
+static int pvr2_hdw_set_input(struct pvr2_hdw *hdw,int v)
+{
+ 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->input_val == PVR2_CVAL_INPUT_DTV)) {
+ hdw->freqSelector = 1;
+ hdw->freqDirty = !0;
+ }
+ return 0;
+}
+
+
+int pvr2_hdw_set_input_allowed(struct pvr2_hdw *hdw,
+ unsigned int change_mask,
+ unsigned int change_val)
+{
+ int ret = 0;
+ unsigned int nv,m,idx;
+ LOCK_TAKE(hdw->big_lock);
+ do {
+ nv = hdw->input_allowed_mask & ~change_mask;
+ nv |= (change_val & change_mask);
+ nv &= hdw->input_avail_mask;
+ if (!nv) {
+ /* No legal modes left; return error instead. */
+ ret = -EPERM;
+ break;
+ }
+ hdw->input_allowed_mask = nv;
+ if ((1 << hdw->input_val) & hdw->input_allowed_mask) {
+ /* Current mode is still in the allowed mask, so
+ we're done. */
+ break;
+ }
+ /* Select and switch to a mode that is still in the allowed
+ mask */
+ if (!hdw->input_allowed_mask) {
+ /* Nothing legal; give up */
+ break;
+ }
+ m = hdw->input_allowed_mask;
+ for (idx = 0; idx < (sizeof(m) << 3); idx++) {
+ if (!((1 << idx) & m)) continue;
+ pvr2_hdw_set_input(hdw,idx);
+ break;
+ }
+ } while (0);
+ LOCK_GIVE(hdw->big_lock);
+ return ret;
+}
+
+
/* Find I2C address of eeprom */
static int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *hdw)
{
* will be according to PVR_CVAL_INPUT_xxxx definitions. */
unsigned int pvr2_hdw_get_input_available(struct pvr2_hdw *);
+/* Return a bit mask of allowed input selections for this device. Mask bits
+ * will be according to PVR_CVAL_INPUT_xxxx definitions. */
+unsigned int pvr2_hdw_get_input_allowed(struct pvr2_hdw *);
+
+/* Change the set of allowed input selections for this device. Both
+ change_mask and change_valu are mask bits according to
+ PVR_CVAL_INPUT_xxxx definitions. The change_mask parameter indicate
+ which settings are being changed and the change_val parameter indicates
+ whether corresponding settings are being set or cleared. */
+int pvr2_hdw_set_input_allowed(struct pvr2_hdw *,
+ unsigned int change_mask,
+ unsigned int change_val);
+
/* Return name for this driver instance */
const char *pvr2_hdw_get_driver_name(struct pvr2_hdw *);
struct pvr2_v4l2_fh *vprev;
wait_queue_head_t wait_data;
int fw_mode_flag;
- int prev_input_val;
};
struct pvr2_v4l2 {
v4l2_prio_close(&vp->prio, &fhp->prio);
file->private_data = NULL;
- /* Restore the previous input selection, if it makes sense
- to do so. */
- if (fhp->dev_info->v4l_type == VFL_TYPE_RADIO) {
- struct pvr2_ctrl *cp;
- int pval;
- cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
- pvr2_ctrl_get_value(cp,&pval);
- /* Only restore if we're still selecting the radio */
- if (pval == PVR2_CVAL_INPUT_RADIO) {
- pvr2_ctrl_set_value(cp,fhp->prev_input_val);
- pvr2_hdw_commit_ctl(hdw);
- }
- }
-
if (fhp->vnext) {
fhp->vnext->vprev = fhp->vprev;
} else {
struct pvr2_v4l2_fh *fhp;
struct pvr2_v4l2 *vp;
struct pvr2_hdw *hdw;
+ unsigned int input_mask = 0;
+ int ret = 0;
dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase);
pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp);
pvr2_channel_init(&fhp->channel,vp->channel.mc_head);
+ if (dip->v4l_type == VFL_TYPE_RADIO) {
+ /* Opening device as a radio, legal input selection subset
+ is just the radio. */
+ input_mask = (1 << PVR2_CVAL_INPUT_RADIO);
+ } else {
+ /* Opening the main V4L device, legal input selection
+ subset includes all analog inputs. */
+ input_mask = ((1 << PVR2_CVAL_INPUT_RADIO) |
+ (1 << PVR2_CVAL_INPUT_TV) |
+ (1 << PVR2_CVAL_INPUT_COMPOSITE) |
+ (1 << PVR2_CVAL_INPUT_SVIDEO));
+ }
+ ret = pvr2_channel_limit_inputs(&fhp->channel,input_mask);
+ if (ret) {
+ pvr2_channel_done(&fhp->channel);
+ pvr2_trace(PVR2_TRACE_STRUCT,
+ "Destroying pvr_v4l2_fh id=%p (input mask error)",
+ fhp);
+
+ kfree(fhp);
+ return ret;
+ }
+
fhp->vnext = NULL;
fhp->vprev = vp->vlast;
if (vp->vlast) {
vp->vlast = fhp;
fhp->vhead = vp;
- /* Opening the /dev/radioX device implies a mode switch.
- So execute that here. Note that you can get the
- IDENTICAL effect merely by opening the normal video
- device and setting the input appropriately. */
- if (dip->v4l_type == VFL_TYPE_RADIO) {
- struct pvr2_ctrl *cp;
- cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
- pvr2_ctrl_get_value(cp,&fhp->prev_input_val);
- pvr2_ctrl_set_value(cp,PVR2_CVAL_INPUT_RADIO);
- pvr2_hdw_commit_ctl(hdw);
- }
-
fhp->file = file;
file->private_data = fhp;
v4l2_prio_open(&vp->prio,&fhp->prio);
projects / linux-2.6 / commitdiff