diff options
| -rw-r--r-- | drivers/media/radio/dsbr100.c | 47 |
1 files changed, 35 insertions, 12 deletions
diff --git a/drivers/media/radio/dsbr100.c b/drivers/media/radio/dsbr100.c index 17e8f2ca7d9..ed9cd7ad060 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" @@ -121,6 +125,10 @@ 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, @@ -144,7 +152,7 @@ struct dsbr100_device { int curfreq; int stereo; int removed; - int muted; + int status; }; static struct usb_device_id usb_dsbr100_device_table [] = { @@ -198,7 +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]; @@ -241,7 +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]; @@ -470,7 +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; @@ -546,9 +554,21 @@ 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"); @@ -561,9 +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"); @@ -642,6 +664,7 @@ static int usb_dsbr100_probe(struct usb_interface *intf, radio->removed = 0; radio->usbdev = interface_to_usbdev(intf); radio->curfreq = FREQ_MIN * FREQ_MUL; + radio->status = STOPPED; video_set_drvdata(&radio->videodev, radio); |