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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-18 02:43:52 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-18 02:43:52 +0400 |
commit | 0cfd81031a26717fe14380d18275f8e217571615 (patch) | |
tree | 78a84e4cb97e7f45eb77dc0fbd8857a5dd717869 /Documentation/usb | |
parent | f7ea4a4ba84f382e8eb143e435551de0feee5b4b (diff) | |
parent | 802f389a2cc6e2771b8de915ac241456d41eb79e (diff) | |
download | linux-0cfd81031a26717fe14380d18275f8e217571615.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (94 commits)
USB: remove err() macro from more usb drivers
USB: remove err() macro from usb misc drivers
USB: remove err() macro from usb core code
USB: remove err() macro from usb class drivers
USB: remove use of err() in drivers/usb/serial
USB: remove info() macro from usb mtd drivers
USB: remove info() macro from usb input drivers
USB: remove info() macro from usb network drivers
USB: remove info() macro from remaining usb drivers
USB: remove info() macro from usb/misc drivers
USB: remove info() macro from usb/serial drivers
USB: remove warn macro from HID core
USB: remove warn() macro from usb drivers
USB: remove warn() macro from usb net drivers
USB: remove warn() macro from usb media drivers
USB: remove warn() macro from usb input drivers
usb/fsl_qe_udc: clear data toggle on clear halt request
usb/fsl_qe_udc: fix response to get status request
fsl_usb2_udc: Fix oops on probe failure.
fsl_usb2_udc: Add a wmb before priming endpoint.
...
Diffstat (limited to 'Documentation/usb')
-rw-r--r-- | Documentation/usb/anchors.txt | 17 | ||||
-rw-r--r-- | Documentation/usb/misc_usbsevseg.txt | 46 | ||||
-rw-r--r-- | Documentation/usb/power-management.txt | 8 |
3 files changed, 67 insertions, 4 deletions
diff --git a/Documentation/usb/anchors.txt b/Documentation/usb/anchors.txt index 5e6b64c20d25..6f24f566955a 100644 --- a/Documentation/usb/anchors.txt +++ b/Documentation/usb/anchors.txt @@ -52,6 +52,11 @@ Therefore no guarantee is made that the URBs have been unlinked when the call returns. They may be unlinked later but will be unlinked in finite time. +usb_scuttle_anchored_urbs() +--------------------------- + +All URBs of an anchor are unanchored en masse. + usb_wait_anchor_empty_timeout() ------------------------------- @@ -59,4 +64,16 @@ This function waits for all URBs associated with an anchor to finish or a timeout, whichever comes first. Its return value will tell you whether the timeout was reached. +usb_anchor_empty() +------------------ + +Returns true if no URBs are associated with an anchor. Locking +is the caller's responsibility. + +usb_get_from_anchor() +--------------------- +Returns the oldest anchored URB of an anchor. The URB is unanchored +and returned with a reference. As you may mix URBs to several +destinations in one anchor you have no guarantee the chronologically +first submitted URB is returned.
\ No newline at end of file diff --git a/Documentation/usb/misc_usbsevseg.txt b/Documentation/usb/misc_usbsevseg.txt new file mode 100644 index 000000000000..0f6be4f9930b --- /dev/null +++ b/Documentation/usb/misc_usbsevseg.txt @@ -0,0 +1,46 @@ +USB 7-Segment Numeric Display +Manufactured by Delcom Engineering + +Device Information +------------------ +USB VENDOR_ID 0x0fc5 +USB PRODUCT_ID 0x1227 +Both the 6 character and 8 character displays have PRODUCT_ID, +and according to Delcom Engineering no queryable information +can be obtained from the device to tell them apart. + +Device Modes +------------ +By default, the driver assumes the display is only 6 characters +The mode for 6 characters is: + MSB 0x06; LSB 0x3f +For the 8 character display: + MSB 0x08; LSB 0xff +The device can accept "text" either in raw, hex, or ascii textmode. +raw controls each segment manually, +hex expects a value between 0-15 per character, +ascii expects a value between '0'-'9' and 'A'-'F'. +The default is ascii. + +Device Operation +---------------- +1. Turn on the device: + echo 1 > /sys/bus/usb/.../powered +2. Set the device's mode: + echo $mode_msb > /sys/bus/usb/.../mode_msb + echo $mode_lsb > /sys/bus/usb/.../mode_lsb +3. Set the textmode: + echo $textmode > /sys/bus/usb/.../textmode +4. set the text (for example): + echo "123ABC" > /sys/bus/usb/.../text (ascii) + echo "A1B2" > /sys/bus/usb/.../text (ascii) + echo -ne "\x01\x02\x03" > /sys/bus/usb/.../text (hex) +5. Set the decimal places. + The device has either 6 or 8 decimal points. + to set the nth decimal place calculate 10 ** n + and echo it in to /sys/bus/usb/.../decimals + To set multiple decimals points sum up each power. + For example, to set the 0th and 3rd decimal place + echo 1001 > /sys/bus/usb/.../decimals + + diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt index 9d31140e3f5b..e48ea1d51010 100644 --- a/Documentation/usb/power-management.txt +++ b/Documentation/usb/power-management.txt @@ -350,12 +350,12 @@ without holding the mutex. There also are a couple of utility routines drivers can use: - usb_autopm_enable() sets pm_usage_cnt to 1 and then calls - usb_autopm_set_interface(), which will attempt an autoresume. - - usb_autopm_disable() sets pm_usage_cnt to 0 and then calls + usb_autopm_enable() sets pm_usage_cnt to 0 and then calls usb_autopm_set_interface(), which will attempt an autosuspend. + usb_autopm_disable() sets pm_usage_cnt to 1 and then calls + usb_autopm_set_interface(), which will attempt an autoresume. + The conventional usage pattern is that a driver calls usb_autopm_get_interface() in its open routine and usb_autopm_put_interface() in its close or release routine. But |