#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/module.h>
-#include <linux/moduleparam.h>
#include <linux/list.h>
#include <linux/freezer.h>
#include <linux/jiffies.h>
#include "dvbdev.h"
static int dvb_frontend_debug;
-static int dvb_shutdown_timeout = 5;
+static int dvb_shutdown_timeout;
static int dvb_force_auto_inversion;
static int dvb_override_tune_delay;
static int dvb_powerdown_on_sleep = 1;
dprintk ("%s\n", __FUNCTION__);
- if (down_interruptible (&events->sem))
+ if (mutex_lock_interruptible (&events->mtx))
return;
wp = (events->eventw + 1) % MAX_EVENT;
events->eventw = wp;
- up (&events->sem);
+ mutex_unlock(&events->mtx);
e->status = status;
return ret;
}
- if (down_interruptible (&events->sem))
+ if (mutex_lock_interruptible (&events->mtx))
return -ERESTARTSYS;
memcpy (event, &events->events[events->eventr],
events->eventr = (events->eventr + 1) % MAX_EVENT;
- up (&events->sem);
+ mutex_unlock(&events->mtx);
return 0;
}
dvb_frontend_swzigzag(fe);
}
- if (dvb_shutdown_timeout) {
- if (dvb_powerdown_on_sleep)
- if (fe->ops.set_voltage)
- fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
+ if (dvb_powerdown_on_sleep) {
+ if (fe->ops.set_voltage)
+ fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
if (fe->ops.tuner_ops.sleep) {
fe->ops.tuner_ops.sleep(fe);
if (fe->ops.i2c_gate_ctrl)
return 0;
}
+static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
+ u32 *freq_min, u32 *freq_max)
+{
+ *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
+
+ if (fe->ops.info.frequency_max == 0)
+ *freq_max = fe->ops.tuner_ops.info.frequency_max;
+ else if (fe->ops.tuner_ops.info.frequency_max == 0)
+ *freq_max = fe->ops.info.frequency_max;
+ else
+ *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
+
+ if (*freq_min == 0 || *freq_max == 0)
+ printk(KERN_WARNING "DVB: frontend %u frequency limits undefined - fix the driver\n",
+ fe->dvb->num);
+}
+
+static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *parms)
+{
+ u32 freq_min;
+ u32 freq_max;
+
+ /* range check: frequency */
+ dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
+ if ((freq_min && parms->frequency < freq_min) ||
+ (freq_max && parms->frequency > freq_max)) {
+ printk(KERN_WARNING "DVB: frontend %u frequency %u out of range (%u..%u)\n",
+ fe->dvb->num, parms->frequency, freq_min, freq_max);
+ return -EINVAL;
+ }
+
+ /* range check: symbol rate */
+ if (fe->ops.info.type == FE_QPSK) {
+ if ((fe->ops.info.symbol_rate_min &&
+ parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
+ (fe->ops.info.symbol_rate_max &&
+ parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
+ printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
+ fe->dvb->num, parms->u.qpsk.symbol_rate,
+ fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
+ return -EINVAL;
+ }
+
+ } else if (fe->ops.info.type == FE_QAM) {
+ if ((fe->ops.info.symbol_rate_min &&
+ parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
+ (fe->ops.info.symbol_rate_max &&
+ parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
+ printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
+ fe->dvb->num, parms->u.qam.symbol_rate,
+ fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *parg)
{
dprintk ("%s\n", __FUNCTION__);
- if (!fe || fepriv->exit)
+ if (fepriv->exit)
return -ENODEV;
if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
case FE_GET_INFO: {
struct dvb_frontend_info* info = parg;
memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
+ dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
/* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
* do it, it is done for it. */
case FE_SET_FRONTEND: {
struct dvb_frontend_tune_settings fetunesettings;
+ if (dvb_frontend_check_parameters(fe, parg) < 0) {
+ err = -EINVAL;
+ break;
+ }
+
memcpy (&fepriv->parameters, parg,
sizeof (struct dvb_frontend_parameters));
dprintk ("%s\n", __FUNCTION__);
- if ((ret = dvb_generic_open (inode, file)) < 0)
- return ret;
-
- if (fe->ops.ts_bus_ctrl) {
- if ((ret = fe->ops.ts_bus_ctrl (fe, 1)) < 0) {
- dvb_generic_release (inode, file);
+ if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
+ if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
return ret;
- }
}
- if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
+ if ((ret = dvb_generic_open (inode, file)) < 0)
+ goto err1;
+ if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
/* normal tune mode when opened R/W */
fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
fepriv->tone = -1;
ret = dvb_frontend_start (fe);
if (ret)
- dvb_generic_release (inode, file);
+ goto err2;
/* empty event queue */
fepriv->events.eventr = fepriv->events.eventw = 0;
}
return ret;
+
+err2:
+ dvb_generic_release(inode, file);
+err1:
+ if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
+ fe->ops.ts_bus_ctrl(fe, 0);
+ return ret;
}
static int dvb_frontend_release(struct inode *inode, struct file *file)
if ((file->f_flags & O_ACCMODE) != O_RDONLY)
fepriv->release_jiffies = jiffies;
- if (fe->ops.ts_bus_ctrl)
- fe->ops.ts_bus_ctrl (fe, 0);
-
ret = dvb_generic_release (inode, file);
- if (dvbdev->users==-1 && fepriv->exit==1) {
- fops_put(file->f_op);
- file->f_op = NULL;
- wake_up(&dvbdev->wait_queue);
+ if (dvbdev->users == -1) {
+ if (fepriv->exit == 1) {
+ fops_put(file->f_op);
+ file->f_op = NULL;
+ wake_up(&dvbdev->wait_queue);
+ }
+ if (fe->ops.ts_bus_ctrl)
+ fe->ops.ts_bus_ctrl(fe, 0);
}
+
return ret;
}
init_MUTEX (&fepriv->sem);
init_waitqueue_head (&fepriv->wait_queue);
init_waitqueue_head (&fepriv->events.wait_queue);
- init_MUTEX (&fepriv->events.sem);
+ mutex_init(&fepriv->events.mtx);
fe->dvb = dvb;
fepriv->inversion = INVERSION_OFF;
projects / linux-2.6-omap-h63xx.git / blobdiff