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authorMike Isely <isely@pobox.com>2007-04-08 01:11:47 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-04-27 15:45:30 -0300
commit31a1854706707dc3b67eb0d3bf0f51c67d91c82e (patch)
tree724a4659f07d8b040578da07de3f07909336116d /drivers/media/video/pvrusb2
parent4f210e072235c3c123b068d348a1a02e624ff5be (diff)
V4L/DVB (5507): Pvrusb2: Gather USB bus address info and report it
The V4L2 API requires a unique bus_info string returned as part of the v4l2_capability structure. These changes gather up the USB address information, from the underlying device, into a string and report that out through v4l2 and via sysfs (for completeness). Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/pvrusb2')
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h2
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-hdw.c12
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-hdw.h3
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-sysfs.c30
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-v4l2.c2
5 files changed, 49 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
index 16bd7419960..ce66ab8ff2d 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
@@ -283,6 +283,8 @@ struct pvr2_hdw {
int unit_number; /* ID for driver instance */
unsigned long serial_number; /* ID for hardware itself */
+ char bus_info[32]; /* Bus location info */
+
/* Minor numbers used by v4l logic (yes, this is a hack, as there
should be no v4l junk here). Probably a better way to do this. */
int v4l_minor_number_video;
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 504301ee56f..acf651e01f9 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -1008,6 +1008,13 @@ unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *hdw)
return hdw->serial_number;
}
+
+const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *hdw)
+{
+ return hdw->bus_info;
+}
+
+
unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *hdw)
{
return hdw->freqSelector ? hdw->freqValTelevision : hdw->freqValRadio;
@@ -2105,6 +2112,11 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
hdw->usb_intf = intf;
hdw->usb_dev = interface_to_usbdev(intf);
+ scnprintf(hdw->bus_info,sizeof(hdw->bus_info),
+ "usb %s address %d",
+ hdw->usb_dev->dev.bus_id,
+ hdw->usb_dev->devnum);
+
ifnum = hdw->usb_intf->cur_altsetting->desc.bInterfaceNumber;
usb_set_interface(hdw->usb_dev,ifnum,0);
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.h b/drivers/media/video/pvrusb2/pvrusb2-hdw.h
index 0c9cca43ff8..4dba8d00632 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.h
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.h
@@ -124,6 +124,9 @@ struct usb_device *pvr2_hdw_get_dev(struct pvr2_hdw *);
/* Retrieve serial number of device */
unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *);
+/* Retrieve bus location info of device */
+const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *);
+
/* Called when hardware has been unplugged */
void pvr2_hdw_disconnect(struct pvr2_hdw *);
diff --git a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
index 91396fd573e..a741c556a39 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
@@ -42,9 +42,11 @@ struct pvr2_sysfs {
struct class_device_attribute attr_v4l_minor_number;
struct class_device_attribute attr_v4l_radio_minor_number;
struct class_device_attribute attr_unit_number;
+ struct class_device_attribute attr_bus_info;
int v4l_minor_number_created_ok;
int v4l_radio_minor_number_created_ok;
int unit_number_created_ok;
+ int bus_info_created_ok;
};
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
@@ -705,6 +707,10 @@ static void class_dev_destroy(struct pvr2_sysfs *sfp)
pvr2_sysfs_tear_down_debugifc(sfp);
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
pvr2_sysfs_tear_down_controls(sfp);
+ if (sfp->bus_info_created_ok) {
+ class_device_remove_file(sfp->class_dev,
+ &sfp->attr_bus_info);
+ }
if (sfp->v4l_minor_number_created_ok) {
class_device_remove_file(sfp->class_dev,
&sfp->attr_v4l_minor_number);
@@ -735,6 +741,16 @@ static ssize_t v4l_minor_number_show(struct class_device *class_dev,char *buf)
}
+static ssize_t bus_info_show(struct class_device *class_dev,char *buf)
+{
+ struct pvr2_sysfs *sfp;
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ return scnprintf(buf,PAGE_SIZE,"%s\n",
+ pvr2_hdw_get_bus_info(sfp->channel.hdw));
+}
+
+
static ssize_t v4l_radio_minor_number_show(struct class_device *class_dev,
char *buf)
{
@@ -836,6 +852,20 @@ static void class_dev_create(struct pvr2_sysfs *sfp,
sfp->unit_number_created_ok = !0;
}
+ sfp->attr_bus_info.attr.owner = THIS_MODULE;
+ sfp->attr_bus_info.attr.name = "bus_info_str";
+ sfp->attr_bus_info.attr.mode = S_IRUGO;
+ sfp->attr_bus_info.show = bus_info_show;
+ sfp->attr_bus_info.store = NULL;
+ ret = class_device_create_file(sfp->class_dev,
+ &sfp->attr_bus_info);
+ if (ret < 0) {
+ printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
+ __FUNCTION__, ret);
+ } else {
+ sfp->bus_info_created_ok = !0;
+ }
+
pvr2_sysfs_add_controls(sfp);
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
pvr2_sysfs_add_debugifc(sfp);
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 25d3830b482..4563b3df8a0 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -203,6 +203,8 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
struct v4l2_capability *cap = arg;
memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability));
+ strlcpy(cap->bus_info,pvr2_hdw_get_bus_info(hdw),
+ sizeof(cap->bus_info));
ret = 0;
break;