diff options
Diffstat (limited to 'drivers/media/radio/dsbr100.c')
| -rw-r--r-- | drivers/media/radio/dsbr100.c | 109 |
1 files changed, 38 insertions, 71 deletions
diff --git a/drivers/media/radio/dsbr100.c b/drivers/media/radio/dsbr100.c index 613576202294..ed9cd7ad0604 100644 --- a/drivers/media/radio/dsbr100.c +++ b/drivers/media/radio/dsbr100.c @@ -33,6 +33,10 @@ History: + Version 0.46: + Removed usb_dsbr100_open/close calls and radio->users counter. Also, + radio->muted changed to radio->status and suspend/resume calls updated. + Version 0.45: Converted to v4l2_device. @@ -100,8 +104,8 @@ */ #include <linux/version.h> /* for KERNEL_VERSION MACRO */ -#define DRIVER_VERSION "v0.45" -#define RADIO_VERSION KERNEL_VERSION(0, 4, 5) +#define DRIVER_VERSION "v0.46" +#define RADIO_VERSION KERNEL_VERSION(0, 4, 6) #define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>" #define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver" @@ -121,13 +125,15 @@ devices, that would be 76 and 91. */ #define FREQ_MAX 108.0 #define FREQ_MUL 16000 +/* defines for radio->status */ +#define STARTED 0 +#define STOPPED 1 + #define videodev_to_radio(d) container_of(d, struct dsbr100_device, videodev) static int usb_dsbr100_probe(struct usb_interface *intf, const struct usb_device_id *id); static void usb_dsbr100_disconnect(struct usb_interface *intf); -static int usb_dsbr100_open(struct file *file); -static int usb_dsbr100_close(struct file *file); static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message); static int usb_dsbr100_resume(struct usb_interface *intf); @@ -145,9 +151,8 @@ struct dsbr100_device { struct mutex lock; /* buffer locking */ int curfreq; int stereo; - int users; int removed; - int muted; + int status; }; static struct usb_device_id usb_dsbr100_device_table [] = { @@ -201,7 +206,7 @@ static int dsbr100_start(struct dsbr100_device *radio) goto usb_control_msg_failed; } - radio->muted = 0; + radio->status = STARTED; mutex_unlock(&radio->lock); return (radio->transfer_buffer)[0]; @@ -244,7 +249,7 @@ static int dsbr100_stop(struct dsbr100_device *radio) goto usb_control_msg_failed; } - radio->muted = 1; + radio->status = STOPPED; mutex_unlock(&radio->lock); return (radio->transfer_buffer)[0]; @@ -258,12 +263,12 @@ usb_control_msg_failed: } /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ -static int dsbr100_setfreq(struct dsbr100_device *radio, int freq) +static int dsbr100_setfreq(struct dsbr100_device *radio) { int retval; int request; + int freq = (radio->curfreq / 16 * 80) / 1000 + 856; - freq = (freq / 16 * 80) / 1000 + 856; mutex_lock(&radio->lock); retval = usb_control_msg(radio->usbdev, @@ -431,7 +436,7 @@ static int vidioc_s_frequency(struct file *file, void *priv, radio->curfreq = f->frequency; mutex_unlock(&radio->lock); - retval = dsbr100_setfreq(radio, radio->curfreq); + retval = dsbr100_setfreq(radio); if (retval < 0) dev_warn(&radio->usbdev->dev, "Set frequency failed\n"); return 0; @@ -473,7 +478,7 @@ static int vidioc_g_ctrl(struct file *file, void *priv, switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: - ctrl->value = radio->muted; + ctrl->value = radio->status; return 0; } return -EINVAL; @@ -543,65 +548,27 @@ static int vidioc_s_audio(struct file *file, void *priv, return 0; } -static int usb_dsbr100_open(struct file *file) -{ - struct dsbr100_device *radio = video_drvdata(file); - int retval; - - lock_kernel(); - radio->users = 1; - radio->muted = 1; - - retval = dsbr100_start(radio); - if (retval < 0) { - dev_warn(&radio->usbdev->dev, - "Radio did not start up properly\n"); - radio->users = 0; - unlock_kernel(); - return -EIO; - } - - retval = dsbr100_setfreq(radio, radio->curfreq); - if (retval < 0) - dev_warn(&radio->usbdev->dev, - "set frequency failed\n"); - - unlock_kernel(); - return 0; -} - -static int usb_dsbr100_close(struct file *file) -{ - struct dsbr100_device *radio = video_drvdata(file); - int retval; - - if (!radio) - return -ENODEV; - - mutex_lock(&radio->lock); - radio->users = 0; - mutex_unlock(&radio->lock); - - if (!radio->removed) { - retval = dsbr100_stop(radio); - if (retval < 0) { - dev_warn(&radio->usbdev->dev, - "dsbr100_stop failed\n"); - } - - } - return 0; -} - /* Suspend device - stop device. */ static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message) { struct dsbr100_device *radio = usb_get_intfdata(intf); int retval; - retval = dsbr100_stop(radio); - if (retval < 0) - dev_warn(&intf->dev, "dsbr100_stop failed\n"); + if (radio->status == STARTED) { + retval = dsbr100_stop(radio); + if (retval < 0) + dev_warn(&intf->dev, "dsbr100_stop failed\n"); + + /* After dsbr100_stop() status set to STOPPED. + * If we want driver to start radio on resume + * we set status equal to STARTED. + * On resume we will check status and run radio if needed. + */ + + mutex_lock(&radio->lock); + radio->status = STARTED; + mutex_unlock(&radio->lock); + } dev_info(&intf->dev, "going into suspend..\n"); @@ -614,9 +581,11 @@ static int usb_dsbr100_resume(struct usb_interface *intf) struct dsbr100_device *radio = usb_get_intfdata(intf); int retval; - retval = dsbr100_start(radio); - if (retval < 0) - dev_warn(&intf->dev, "dsbr100_start failed\n"); + if (radio->status == STARTED) { + retval = dsbr100_start(radio); + if (retval < 0) + dev_warn(&intf->dev, "dsbr100_start failed\n"); + } dev_info(&intf->dev, "coming out of suspend..\n"); @@ -636,8 +605,6 @@ static void usb_dsbr100_video_device_release(struct video_device *videodev) /* File system interface */ static const struct v4l2_file_operations usb_dsbr100_fops = { .owner = THIS_MODULE, - .open = usb_dsbr100_open, - .release = usb_dsbr100_close, .ioctl = video_ioctl2, }; @@ -695,9 +662,9 @@ static int usb_dsbr100_probe(struct usb_interface *intf, mutex_init(&radio->lock); radio->removed = 0; - radio->users = 0; radio->usbdev = interface_to_usbdev(intf); radio->curfreq = FREQ_MIN * FREQ_MUL; + radio->status = STOPPED; video_set_drvdata(&radio->videodev, radio); |