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path: root/drivers/media/radio/radio-si470x.c
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Diffstat (limited to 'drivers/media/radio/radio-si470x.c')
-rw-r--r--drivers/media/radio/radio-si470x.c258
1 files changed, 110 insertions, 148 deletions
diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c
index 16c7ef20265c..5920cd306975 100644
--- a/drivers/media/radio/radio-si470x.c
+++ b/drivers/media/radio/radio-si470x.c
@@ -104,6 +104,7 @@
* - hardware frequency seek support
* - afc indication
* - more safety checks, let si470x_get_freq return errno
+ * - vidioc behavior corrected according to v4l2 spec
*
* ToDo:
* - add firmware download/update support
@@ -141,9 +142,9 @@
/* USB Device ID List */
static struct usb_device_id si470x_usb_driver_id_table[] = {
/* Silicon Labs USB FM Radio Reference Design */
- { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) },
/* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */
- { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) },
/* Terminating entry */
{ }
};
@@ -157,7 +158,7 @@ MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table);
/* Radio Nr */
static int radio_nr = -1;
-module_param(radio_nr, int, 0);
+module_param(radio_nr, int, 0444);
MODULE_PARM_DESC(radio_nr, "Radio Nr");
/* Spacing (kHz) */
@@ -165,42 +166,42 @@ MODULE_PARM_DESC(radio_nr, "Radio Nr");
/* 1: 100 kHz (Europe, Japan) */
/* 2: 50 kHz */
static unsigned short space = 2;
-module_param(space, ushort, 0);
-MODULE_PARM_DESC(radio_nr, "Spacing: 0=200kHz 1=100kHz *2=50kHz*");
+module_param(space, ushort, 0444);
+MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*");
/* Bottom of Band (MHz) */
/* 0: 87.5 - 108 MHz (USA, Europe)*/
/* 1: 76 - 108 MHz (Japan wide band) */
/* 2: 76 - 90 MHz (Japan) */
static unsigned short band = 1;
-module_param(band, ushort, 0);
-MODULE_PARM_DESC(radio_nr, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz");
+module_param(band, ushort, 0444);
+MODULE_PARM_DESC(band, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz");
/* De-emphasis */
/* 0: 75 us (USA) */
/* 1: 50 us (Europe, Australia, Japan) */
static unsigned short de = 1;
-module_param(de, ushort, 0);
-MODULE_PARM_DESC(radio_nr, "De-emphasis: 0=75us *1=50us*");
+module_param(de, ushort, 0444);
+MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*");
/* USB timeout */
static unsigned int usb_timeout = 500;
-module_param(usb_timeout, uint, 0);
+module_param(usb_timeout, uint, 0644);
MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*");
/* Tune timeout */
static unsigned int tune_timeout = 3000;
-module_param(tune_timeout, uint, 0);
+module_param(tune_timeout, uint, 0644);
MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*");
/* Seek timeout */
static unsigned int seek_timeout = 5000;
-module_param(seek_timeout, uint, 0);
+module_param(seek_timeout, uint, 0644);
MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*");
/* RDS buffer blocks */
static unsigned int rds_buf = 100;
-module_param(rds_buf, uint, 0);
+module_param(rds_buf, uint, 0444);
MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*");
/* RDS maximum block errors */
@@ -209,7 +210,7 @@ static unsigned short max_rds_errors = 1;
/* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */
/* 2 means 3-5 errors requiring correction */
/* 3 means 6+ errors or errors in checkword, correction not possible */
-module_param(max_rds_errors, ushort, 0);
+module_param(max_rds_errors, ushort, 0644);
MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*");
/* RDS poll frequency */
@@ -218,7 +219,7 @@ static unsigned int rds_poll_time = 40;
/* 50 is used by radio-cadet */
/* 75 should be okay */
/* 80 is the usual RDS receive interval */
-module_param(rds_poll_time, uint, 0);
+module_param(rds_poll_time, uint, 0644);
MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*");
@@ -667,23 +668,29 @@ static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq)
int retval;
/* Spacing (kHz) */
- switch (space) {
+ switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
/* 0: 200 kHz (USA, Australia) */
- case 0 : spacing = 0.200 * FREQ_MUL; break;
+ case 0:
+ spacing = 0.200 * FREQ_MUL; break;
/* 1: 100 kHz (Europe, Japan) */
- case 1 : spacing = 0.100 * FREQ_MUL; break;
+ case 1:
+ spacing = 0.100 * FREQ_MUL; break;
/* 2: 50 kHz */
- default: spacing = 0.050 * FREQ_MUL; break;
+ default:
+ spacing = 0.050 * FREQ_MUL; break;
};
/* Bottom of Band (MHz) */
- switch (band) {
+ switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
/* 0: 87.5 - 108 MHz (USA, Europe) */
- case 0 : band_bottom = 87.5 * FREQ_MUL; break;
+ case 0:
+ band_bottom = 87.5 * FREQ_MUL; break;
/* 1: 76 - 108 MHz (Japan wide band) */
- default: band_bottom = 76 * FREQ_MUL; break;
+ default:
+ band_bottom = 76 * FREQ_MUL; break;
/* 2: 76 - 90 MHz (Japan) */
- case 2 : band_bottom = 76 * FREQ_MUL; break;
+ case 2:
+ band_bottom = 76 * FREQ_MUL; break;
};
/* read channel */
@@ -706,23 +713,29 @@ static int si470x_set_freq(struct si470x_device *radio, unsigned int freq)
unsigned short chan;
/* Spacing (kHz) */
- switch (space) {
+ switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
/* 0: 200 kHz (USA, Australia) */
- case 0 : spacing = 0.200 * FREQ_MUL; break;
+ case 0:
+ spacing = 0.200 * FREQ_MUL; break;
/* 1: 100 kHz (Europe, Japan) */
- case 1 : spacing = 0.100 * FREQ_MUL; break;
+ case 1:
+ spacing = 0.100 * FREQ_MUL; break;
/* 2: 50 kHz */
- default: spacing = 0.050 * FREQ_MUL; break;
+ default:
+ spacing = 0.050 * FREQ_MUL; break;
};
/* Bottom of Band (MHz) */
- switch (band) {
+ switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
/* 0: 87.5 - 108 MHz (USA, Europe) */
- case 0 : band_bottom = 87.5 * FREQ_MUL; break;
+ case 0:
+ band_bottom = 87.5 * FREQ_MUL; break;
/* 1: 76 - 108 MHz (Japan wide band) */
- default: band_bottom = 76 * FREQ_MUL; break;
+ default:
+ band_bottom = 76 * FREQ_MUL; break;
/* 2: 76 - 90 MHz (Japan) */
- case 2 : band_bottom = 76 * FREQ_MUL; break;
+ case 2:
+ band_bottom = 76 * FREQ_MUL; break;
};
/* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */
@@ -986,7 +999,7 @@ static void si470x_work(struct work_struct *work)
static ssize_t si470x_fops_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
unsigned int block_count = 0;
@@ -1047,7 +1060,7 @@ done:
static unsigned int si470x_fops_poll(struct file *file,
struct poll_table_struct *pts)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* switch on rds reception */
@@ -1071,9 +1084,10 @@ static unsigned int si470x_fops_poll(struct file *file,
*/
static int si470x_fops_open(struct inode *inode, struct file *file)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval;
+ lock_kernel();
radio->users++;
retval = usb_autopm_get_interface(radio->intf);
@@ -1090,6 +1104,7 @@ static int si470x_fops_open(struct inode *inode, struct file *file)
}
done:
+ unlock_kernel();
return retval;
}
@@ -1099,7 +1114,7 @@ done:
*/
static int si470x_fops_release(struct inode *inode, struct file *file)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* safety check */
@@ -1162,7 +1177,6 @@ static const struct file_operations si470x_fops = {
* si470x_v4l2_queryctrl - query control
*/
static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = {
-/* HINT: the disabled controls are only here to satify kradio and such apps */
{
.id = V4L2_CID_AUDIO_VOLUME,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -1173,18 +1187,6 @@ static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = {
.default_value = 15,
},
{
- .id = V4L2_CID_AUDIO_BALANCE,
- .flags = V4L2_CTRL_FLAG_DISABLED,
- },
- {
- .id = V4L2_CID_AUDIO_BASS,
- .flags = V4L2_CTRL_FLAG_DISABLED,
- },
- {
- .id = V4L2_CID_AUDIO_TREBLE,
- .flags = V4L2_CTRL_FLAG_DISABLED,
- },
- {
.id = V4L2_CID_AUDIO_MUTE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mute",
@@ -1193,10 +1195,6 @@ static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = {
.step = 1,
.default_value = 1,
},
- {
- .id = V4L2_CID_AUDIO_LOUDNESS,
- .flags = V4L2_CTRL_FLAG_DISABLED,
- },
};
@@ -1218,56 +1216,34 @@ static int si470x_vidioc_querycap(struct file *file, void *priv,
/*
- * si470x_vidioc_g_input - get input
- */
-static int si470x_vidioc_g_input(struct file *file, void *priv,
- unsigned int *i)
-{
- *i = 0;
-
- return 0;
-}
-
-
-/*
- * si470x_vidioc_s_input - set input
- */
-static int si470x_vidioc_s_input(struct file *file, void *priv, unsigned int i)
-{
- int retval = 0;
-
- /* safety checks */
- if (i != 0)
- retval = -EINVAL;
-
- if (retval < 0)
- printk(KERN_WARNING DRIVER_NAME
- ": set input failed with %d\n", retval);
- return retval;
-}
-
-
-/*
* si470x_vidioc_queryctrl - enumerate control items
*/
static int si470x_vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc)
{
- unsigned char i;
+ unsigned char i = 0;
int retval = -EINVAL;
- /* safety checks */
- if (!qc->id)
+ /* abort if qc->id is below V4L2_CID_BASE */
+ if (qc->id < V4L2_CID_BASE)
goto done;
+ /* search video control */
for (i = 0; i < ARRAY_SIZE(si470x_v4l2_queryctrl); i++) {
if (qc->id == si470x_v4l2_queryctrl[i].id) {
memcpy(qc, &(si470x_v4l2_queryctrl[i]), sizeof(*qc));
- retval = 0;
+ retval = 0; /* found */
break;
}
}
+ /* 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)
printk(KERN_WARNING DRIVER_NAME
@@ -1282,7 +1258,7 @@ done:
static int si470x_vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* safety checks */
@@ -1318,7 +1294,7 @@ done:
static int si470x_vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* safety checks */
@@ -1358,44 +1334,13 @@ done:
static int si470x_vidioc_g_audio(struct file *file, void *priv,
struct v4l2_audio *audio)
{
- int retval = 0;
-
- /* safety checks */
- if (audio->index != 0) {
- retval = -EINVAL;
- goto done;
- }
-
+ /* driver constants */
+ audio->index = 0;
strcpy(audio->name, "Radio");
audio->capability = V4L2_AUDCAP_STEREO;
+ audio->mode = 0;
-done:
- if (retval < 0)
- printk(KERN_WARNING DRIVER_NAME
- ": get audio failed with %d\n", retval);
- return retval;
-}
-
-
-/*
- * si470x_vidioc_s_audio - set audio attributes
- */
-static int si470x_vidioc_s_audio(struct file *file, void *priv,
- struct v4l2_audio *audio)
-{
- int retval = 0;
-
- /* safety checks */
- if (audio->index != 0) {
- retval = -EINVAL;
- goto done;
- }
-
-done:
- if (retval < 0)
- printk(KERN_WARNING DRIVER_NAME
- ": set audio failed with %d\n", retval);
- return retval;
+ return 0;
}
@@ -1405,7 +1350,7 @@ done:
static int si470x_vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *tuner)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* safety checks */
@@ -1413,7 +1358,7 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
retval = -EIO;
goto done;
}
- if ((tuner->index != 0) && (tuner->type != V4L2_TUNER_RADIO)) {
+ if (tuner->index != 0) {
retval = -EINVAL;
goto done;
}
@@ -1422,8 +1367,13 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
if (retval < 0)
goto done;
+ /* driver constants */
strcpy(tuner->name, "FM");
- switch (band) {
+ tuner->type = V4L2_TUNER_RADIO;
+ tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+
+ /* range limits */
+ switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
/* 0: 87.5 - 108 MHz (USA, Europe, default) */
default:
tuner->rangelow = 87.5 * FREQ_MUL;
@@ -1440,14 +1390,18 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
tuner->rangehigh = 90 * FREQ_MUL;
break;
};
- tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
- tuner->capability = V4L2_TUNER_CAP_LOW;
- /* Stereo indicator == Stereo (instead of Mono) */
+ /* stereo indicator == stereo (instead of mono) */
if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 1)
- tuner->audmode = V4L2_TUNER_MODE_STEREO;
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
else
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
+
+ /* mono/stereo selector */
+ if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 1)
tuner->audmode = V4L2_TUNER_MODE_MONO;
+ else
+ tuner->audmode = V4L2_TUNER_MODE_STEREO;
/* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */
tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI)
@@ -1471,23 +1425,28 @@ done:
static int si470x_vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *tuner)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
- int retval = 0;
+ struct si470x_device *radio = video_drvdata(file);
+ int retval = -EINVAL;
/* safety checks */
if (radio->disconnected) {
retval = -EIO;
goto done;
}
- if ((tuner->index != 0) && (tuner->type != V4L2_TUNER_RADIO)) {
- retval = -EINVAL;
+ if (tuner->index != 0)
goto done;
- }
- if (tuner->audmode == V4L2_TUNER_MODE_MONO)
+ /* mono/stereo selector */
+ switch (tuner->audmode) {
+ case V4L2_TUNER_MODE_MONO:
radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */
- else
+ break;
+ case V4L2_TUNER_MODE_STEREO:
radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */
+ break;
+ default:
+ goto done;
+ }
retval = si470x_set_register(radio, POWERCFG);
@@ -1505,7 +1464,7 @@ done:
static int si470x_vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *freq)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* safety checks */
@@ -1513,11 +1472,12 @@ static int si470x_vidioc_g_frequency(struct file *file, void *priv,
retval = -EIO;
goto done;
}
- if ((freq->tuner != 0) && (freq->type != V4L2_TUNER_RADIO)) {
+ if (freq->tuner != 0) {
retval = -EINVAL;
goto done;
}
+ freq->type = V4L2_TUNER_RADIO;
retval = si470x_get_freq(radio, &freq->frequency);
done:
@@ -1534,7 +1494,7 @@ done:
static int si470x_vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *freq)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* safety checks */
@@ -1542,7 +1502,7 @@ static int si470x_vidioc_s_frequency(struct file *file, void *priv,
retval = -EIO;
goto done;
}
- if ((freq->tuner != 0) && (freq->type != V4L2_TUNER_RADIO)) {
+ if (freq->tuner != 0) {
retval = -EINVAL;
goto done;
}
@@ -1563,7 +1523,7 @@ done:
static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv,
struct v4l2_hw_freq_seek *seek)
{
- struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+ struct si470x_device *radio = video_drvdata(file);
int retval = 0;
/* safety checks */
@@ -1571,7 +1531,7 @@ static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv,
retval = -EIO;
goto done;
}
- if ((seek->tuner != 0) && (seek->type != V4L2_TUNER_RADIO)) {
+ if (seek->tuner != 0) {
retval = -EINVAL;
goto done;
}
@@ -1586,15 +1546,16 @@ done:
return retval;
}
+
+/*
+ * si470x_ioctl_ops - video device ioctl operations
+ */
static const struct v4l2_ioctl_ops si470x_ioctl_ops = {
.vidioc_querycap = si470x_vidioc_querycap,
- .vidioc_g_input = si470x_vidioc_g_input,
- .vidioc_s_input = si470x_vidioc_s_input,
.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_s_audio = si470x_vidioc_s_audio,
.vidioc_g_tuner = si470x_vidioc_g_tuner,
.vidioc_s_tuner = si470x_vidioc_s_tuner,
.vidioc_g_frequency = si470x_vidioc_g_frequency,
@@ -1602,14 +1563,15 @@ static const struct v4l2_ioctl_ops si470x_ioctl_ops = {
.vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek,
};
+
/*
- * si470x_viddev_tamples - video device interface
+ * si470x_viddev_template - video device interface
*/
static struct video_device si470x_viddev_template = {
.fops = &si470x_fops,
- .ioctl_ops = &si470x_ioctl_ops,
.name = DRIVER_NAME,
.release = video_device_release,
+ .ioctl_ops = &si470x_ioctl_ops,
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-17 20:13:47 +0300