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path: root/drivers/media/radio/si470x/radio-si470x-common.c
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Diffstat (limited to 'drivers/media/radio/si470x/radio-si470x-common.c')
-rw-r--r--drivers/media/radio/si470x/radio-si470x-common.c305
1 files changed, 62 insertions, 243 deletions
diff --git a/drivers/media/radio/si470x/radio-si470x-common.c b/drivers/media/radio/si470x/radio-si470x-common.c
index 0e740c9..969cf49 100644
--- a/drivers/media/radio/si470x/radio-si470x-common.c
+++ b/drivers/media/radio/si470x/radio-si470x-common.c
@@ -196,9 +196,9 @@ static int si470x_set_chan(struct si470x_device *radio, unsigned short chan)
}
if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0)
- dev_warn(&radio->videodev->dev, "tune does not complete\n");
+ dev_warn(&radio->videodev.dev, "tune does not complete\n");
if (timed_out)
- dev_warn(&radio->videodev->dev,
+ dev_warn(&radio->videodev.dev,
"tune timed out after %u ms\n", tune_timeout);
stop:
@@ -262,7 +262,7 @@ static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq)
*/
int si470x_set_freq(struct si470x_device *radio, unsigned int freq)
{
- unsigned int spacing, band_bottom;
+ unsigned int spacing, band_bottom, band_top;
unsigned short chan;
/* Spacing (kHz) */
@@ -278,19 +278,26 @@ int si470x_set_freq(struct si470x_device *radio, unsigned int freq)
spacing = 0.050 * FREQ_MUL; break;
};
- /* Bottom of Band (MHz) */
+ /* Bottom/Top of Band (MHz) */
switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
/* 0: 87.5 - 108 MHz (USA, Europe) */
case 0:
- band_bottom = 87.5 * FREQ_MUL; break;
+ band_bottom = 87.5 * FREQ_MUL;
+ band_top = 108 * FREQ_MUL;
+ break;
/* 1: 76 - 108 MHz (Japan wide band) */
default:
- band_bottom = 76 * FREQ_MUL; break;
+ band_bottom = 76 * FREQ_MUL;
+ band_top = 108 * FREQ_MUL;
+ break;
/* 2: 76 - 90 MHz (Japan) */
case 2:
- band_bottom = 76 * FREQ_MUL; break;
+ band_bottom = 76 * FREQ_MUL;
+ band_top = 90 * FREQ_MUL;
+ break;
};
+ freq = clamp(freq, band_bottom, band_top);
/* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */
chan = (freq - band_bottom) / spacing;
@@ -320,7 +327,7 @@ static int si470x_set_seek(struct si470x_device *radio,
radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP;
retval = si470x_set_register(radio, POWERCFG);
if (retval < 0)
- goto done;
+ return retval;
/* currently I2C driver only uses interrupt way to seek */
if (radio->stci_enabled) {
@@ -344,24 +351,19 @@ static int si470x_set_seek(struct si470x_device *radio,
}
if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0)
- dev_warn(&radio->videodev->dev, "seek does not complete\n");
+ dev_warn(&radio->videodev.dev, "seek does not complete\n");
if (radio->registers[STATUSRSSI] & STATUSRSSI_SF)
- dev_warn(&radio->videodev->dev,
+ dev_warn(&radio->videodev.dev,
"seek failed / band limit reached\n");
- if (timed_out)
- dev_warn(&radio->videodev->dev,
- "seek timed out after %u ms\n", seek_timeout);
stop:
/* stop seeking */
radio->registers[POWERCFG] &= ~POWERCFG_SEEK;
retval = si470x_set_register(radio, POWERCFG);
-done:
/* try again, if timed out */
- if ((retval == 0) && timed_out)
- retval = -EAGAIN;
-
+ if (retval == 0 && timed_out)
+ return -EAGAIN;
return retval;
}
@@ -463,7 +465,6 @@ static ssize_t si470x_fops_read(struct file *file, char __user *buf,
unsigned int block_count = 0;
/* switch on rds reception */
- mutex_lock(&radio->lock);
if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
si470x_rds_on(radio);
@@ -505,7 +506,6 @@ static ssize_t si470x_fops_read(struct file *file, char __user *buf,
}
done:
- mutex_unlock(&radio->lock);
return retval;
}
@@ -517,19 +517,19 @@ static unsigned int si470x_fops_poll(struct file *file,
struct poll_table_struct *pts)
{
struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
+ unsigned long req_events = poll_requested_events(pts);
+ int retval = v4l2_ctrl_poll(file, pts);
- /* switch on rds reception */
-
- mutex_lock(&radio->lock);
- if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
- si470x_rds_on(radio);
- mutex_unlock(&radio->lock);
+ if (req_events & (POLLIN | POLLRDNORM)) {
+ /* switch on rds reception */
+ if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
+ si470x_rds_on(radio);
- poll_wait(file, &radio->read_queue, pts);
+ poll_wait(file, &radio->read_queue, pts);
- if (radio->rd_index != radio->wr_index)
- retval = POLLIN | POLLRDNORM;
+ if (radio->rd_index != radio->wr_index)
+ retval |= POLLIN | POLLRDNORM;
+ }
return retval;
}
@@ -553,134 +553,26 @@ static const struct v4l2_file_operations si470x_fops = {
* Video4Linux Interface
**************************************************************************/
-/*
- * si470x_vidioc_queryctrl - enumerate control items
- */
-static int si470x_vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
-{
- struct si470x_device *radio = video_drvdata(file);
- int retval = -EINVAL;
-
- /* abort if qc->id is below V4L2_CID_BASE */
- if (qc->id < V4L2_CID_BASE)
- goto done;
-
- /* search video control */
- switch (qc->id) {
- case V4L2_CID_AUDIO_VOLUME:
- return v4l2_ctrl_query_fill(qc, 0, 15, 1, 15);
- case V4L2_CID_AUDIO_MUTE:
- return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
- }
-
- /* disable unsupported base controls */
- /* to satisfy kradio and such apps */
- if ((retval == -EINVAL) && (qc->id < V4L2_CID_LASTP1)) {
- qc->flags = V4L2_CTRL_FLAG_DISABLED;
- retval = 0;
- }
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "query controls failed with %d\n", retval);
- return retval;
-}
-
-
-/*
- * si470x_vidioc_g_ctrl - get the value of a control
- */
-static int si470x_vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
-
- mutex_lock(&radio->lock);
- /* safety checks */
- retval = si470x_disconnect_check(radio);
- if (retval)
- goto done;
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = radio->registers[SYSCONFIG2] &
- SYSCONFIG2_VOLUME;
- break;
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value = ((radio->registers[POWERCFG] &
- POWERCFG_DMUTE) == 0) ? 1 : 0;
- break;
- default:
- retval = -EINVAL;
- }
-
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "get control failed with %d\n", retval);
-
- mutex_unlock(&radio->lock);
- return retval;
-}
-
-
-/*
- * si470x_vidioc_s_ctrl - set the value of a control
- */
-static int si470x_vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
+static int si470x_s_ctrl(struct v4l2_ctrl *ctrl)
{
- struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
-
- mutex_lock(&radio->lock);
- /* safety checks */
- retval = si470x_disconnect_check(radio);
- if (retval)
- goto done;
+ struct si470x_device *radio =
+ container_of(ctrl->handler, struct si470x_device, hdl);
switch (ctrl->id) {
case V4L2_CID_AUDIO_VOLUME:
radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME;
- radio->registers[SYSCONFIG2] |= ctrl->value;
- retval = si470x_set_register(radio, SYSCONFIG2);
- break;
+ radio->registers[SYSCONFIG2] |= ctrl->val;
+ return si470x_set_register(radio, SYSCONFIG2);
case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value == 1)
+ if (ctrl->val)
radio->registers[POWERCFG] &= ~POWERCFG_DMUTE;
else
radio->registers[POWERCFG] |= POWERCFG_DMUTE;
- retval = si470x_set_register(radio, POWERCFG);
- break;
+ return si470x_set_register(radio, POWERCFG);
default:
- retval = -EINVAL;
+ return -EINVAL;
}
-
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "set control failed with %d\n", retval);
- mutex_unlock(&radio->lock);
- return retval;
-}
-
-
-/*
- * si470x_vidioc_g_audio - get audio attributes
- */
-static int si470x_vidioc_g_audio(struct file *file, void *priv,
- struct v4l2_audio *audio)
-{
- /* driver constants */
- audio->index = 0;
- strcpy(audio->name, "Radio");
- audio->capability = V4L2_AUDCAP_STEREO;
- audio->mode = 0;
-
- return 0;
}
@@ -691,22 +583,14 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *tuner)
{
struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
-
- mutex_lock(&radio->lock);
- /* safety checks */
- retval = si470x_disconnect_check(radio);
- if (retval)
- goto done;
+ int retval;
- if (tuner->index != 0) {
- retval = -EINVAL;
- goto done;
- }
+ if (tuner->index != 0)
+ return -EINVAL;
retval = si470x_get_register(radio, STATUSRSSI);
if (retval < 0)
- goto done;
+ return retval;
/* driver constants */
strcpy(tuner->name, "FM");
@@ -737,7 +621,7 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0)
tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
else
- tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
/* If there is a reliable method of detecting an RDS channel,
then this code should check for that before setting this
RDS subchannel. */
@@ -754,16 +638,13 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI);
/* the ideal factor is 0xffff/75 = 873,8 */
tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10);
+ if (tuner->signal > 0xffff)
+ tuner->signal = 0xffff;
/* automatic frequency control: -1: freq to low, 1 freq to high */
/* AFCRL does only indicate that freq. differs, not if too low/high */
tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0;
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "get tuner failed with %d\n", retval);
- mutex_unlock(&radio->lock);
return retval;
}
@@ -775,16 +656,9 @@ static int si470x_vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *tuner)
{
struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
-
- mutex_lock(&radio->lock);
- /* safety checks */
- retval = si470x_disconnect_check(radio);
- if (retval)
- goto done;
if (tuner->index != 0)
- goto done;
+ return -EINVAL;
/* mono/stereo selector */
switch (tuner->audmode) {
@@ -792,20 +666,12 @@ static int si470x_vidioc_s_tuner(struct file *file, void *priv,
radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */
break;
case V4L2_TUNER_MODE_STEREO:
+ default:
radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */
break;
- default:
- goto done;
}
- retval = si470x_set_register(radio, POWERCFG);
-
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "set tuner failed with %d\n", retval);
- mutex_unlock(&radio->lock);
- return retval;
+ return si470x_set_register(radio, POWERCFG);
}
@@ -816,28 +682,12 @@ static int si470x_vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *freq)
{
struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
-
- /* safety checks */
- mutex_lock(&radio->lock);
- retval = si470x_disconnect_check(radio);
- if (retval)
- goto done;
- if (freq->tuner != 0) {
- retval = -EINVAL;
- goto done;
- }
+ if (freq->tuner != 0)
+ return -EINVAL;
freq->type = V4L2_TUNER_RADIO;
- retval = si470x_get_freq(radio, &freq->frequency);
-
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "get frequency failed with %d\n", retval);
- mutex_unlock(&radio->lock);
- return retval;
+ return si470x_get_freq(radio, &freq->frequency);
}
@@ -848,27 +698,11 @@ static int si470x_vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *freq)
{
struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
-
- mutex_lock(&radio->lock);
- /* safety checks */
- retval = si470x_disconnect_check(radio);
- if (retval)
- goto done;
- if (freq->tuner != 0) {
- retval = -EINVAL;
- goto done;
- }
+ if (freq->tuner != 0)
+ return -EINVAL;
- retval = si470x_set_freq(radio, freq->frequency);
-
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "set frequency failed with %d\n", retval);
- mutex_unlock(&radio->lock);
- return retval;
+ return si470x_set_freq(radio, freq->frequency);
}
@@ -879,44 +713,29 @@ static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv,
struct v4l2_hw_freq_seek *seek)
{
struct si470x_device *radio = video_drvdata(file);
- int retval = 0;
-
- mutex_lock(&radio->lock);
- /* safety checks */
- retval = si470x_disconnect_check(radio);
- if (retval)
- goto done;
-
- if (seek->tuner != 0) {
- retval = -EINVAL;
- goto done;
- }
- retval = si470x_set_seek(radio, seek->wrap_around, seek->seek_upward);
+ if (seek->tuner != 0)
+ return -EINVAL;
-done:
- if (retval < 0)
- dev_warn(&radio->videodev->dev,
- "set hardware frequency seek failed with %d\n", retval);
- mutex_unlock(&radio->lock);
- return retval;
+ return si470x_set_seek(radio, seek->wrap_around, seek->seek_upward);
}
+const struct v4l2_ctrl_ops si470x_ctrl_ops = {
+ .s_ctrl = si470x_s_ctrl,
+};
/*
* si470x_ioctl_ops - video device ioctl operations
*/
static const struct v4l2_ioctl_ops si470x_ioctl_ops = {
.vidioc_querycap = si470x_vidioc_querycap,
- .vidioc_queryctrl = si470x_vidioc_queryctrl,
- .vidioc_g_ctrl = si470x_vidioc_g_ctrl,
- .vidioc_s_ctrl = si470x_vidioc_s_ctrl,
- .vidioc_g_audio = si470x_vidioc_g_audio,
.vidioc_g_tuner = si470x_vidioc_g_tuner,
.vidioc_s_tuner = si470x_vidioc_s_tuner,
.vidioc_g_frequency = si470x_vidioc_g_frequency,
.vidioc_s_frequency = si470x_vidioc_s_frequency,
.vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
@@ -926,6 +745,6 @@ static const struct v4l2_ioctl_ops si470x_ioctl_ops = {
struct video_device si470x_viddev_template = {
.fops = &si470x_fops,
.name = DRIVER_NAME,
- .release = video_device_release,
+ .release = video_device_release_empty,
.ioctl_ops = &si470x_ioctl_ops,
};