Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts: net/mac80211/debugfs_sta.c net/mac80211/sta_info.h
This commit is contained in:
Коммит
ca994a36f5
5
CREDITS
5
CREDITS
|
@ -514,6 +514,11 @@ S: Bessemerstraat 21
|
|||
S: Amsterdam
|
||||
S: The Netherlands
|
||||
|
||||
N: NeilBrown
|
||||
E: neil@brown.name
|
||||
P: 4096R/566281B9 1BC6 29EB D390 D870 7B5F 497A 39EC 9EDD 5662 81B9
|
||||
D: NFSD Maintainer 2000-2007
|
||||
|
||||
N: Zach Brown
|
||||
E: zab@zabbo.net
|
||||
D: maestro pci sound
|
||||
|
|
|
@ -33,3 +33,19 @@ Description: Maximum time allowed for periodic transfers per microframe (μs)
|
|||
Beware, non-standard modes are usually not thoroughly tested by
|
||||
hardware designers, and the hardware can malfunction when this
|
||||
setting differ from default 100.
|
||||
|
||||
What: /sys/module/*/{coresize,initsize}
|
||||
Date: Jan 2012
|
||||
KernelVersion:»·3.3
|
||||
Contact: Kay Sievers <kay.sievers@vrfy.org>
|
||||
Description: Module size in bytes.
|
||||
|
||||
What: /sys/module/*/taint
|
||||
Date: Jan 2012
|
||||
KernelVersion:»·3.3
|
||||
Contact: Kay Sievers <kay.sievers@vrfy.org>
|
||||
Description: Module taint flags:
|
||||
P - proprietary module
|
||||
O - out-of-tree module
|
||||
F - force-loaded module
|
||||
C - staging driver module
|
||||
|
|
|
@ -50,7 +50,9 @@
|
|||
|
||||
<sect1><title>Delaying, scheduling, and timer routines</title>
|
||||
!Iinclude/linux/sched.h
|
||||
!Ekernel/sched.c
|
||||
!Ekernel/sched/core.c
|
||||
!Ikernel/sched/cpupri.c
|
||||
!Ikernel/sched/fair.c
|
||||
!Iinclude/linux/completion.h
|
||||
!Ekernel/timer.c
|
||||
</sect1>
|
||||
|
@ -216,7 +218,6 @@ X!Isound/sound_firmware.c
|
|||
|
||||
<chapter id="uart16x50">
|
||||
<title>16x50 UART Driver</title>
|
||||
!Iinclude/linux/serial_core.h
|
||||
!Edrivers/tty/serial/serial_core.c
|
||||
!Edrivers/tty/serial/8250.c
|
||||
</chapter>
|
||||
|
|
|
@ -317,7 +317,7 @@ CPU B: spin_unlock_irqrestore(&dev_lock, flags)
|
|||
<chapter id="pubfunctions">
|
||||
<title>Public Functions Provided</title>
|
||||
!Iarch/x86/include/asm/io.h
|
||||
!Elib/iomap.c
|
||||
!Elib/pci_iomap.c
|
||||
</chapter>
|
||||
|
||||
</book>
|
||||
|
|
|
@ -0,0 +1,59 @@
|
|||
iVBORw0KGgoAAAANSUhEUgAAAlQAAAFYCAYAAACVsmLPAAAAAXNSR0IArs4c6QAAAAZiS0dEAP8A
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||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
p/FSb00BIKjg4kD8/cm4mFNjKfd/OpsJyb2GJ+V+UzEXSK9wAfuvqGr9s7ooHRiV2yYgDCe8xUOp
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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|
||||
1Kzrgplez78OpjUOsDu8qfkMyqsZyLvwSdleNZYpqGASLQe3GSpGHgNXB92r1+6or+sQvInptV+a
|
||||
eF/nlB/kDv7aO14xxUpahErqOr7Hc+yF9y3Hbul13l27NPJ+aJBTgYIKRo4qMcXK46b2wTVlHb9m
|
||||
3VpcXD/i85Kyb4v9lGCvZQoq2CiqxBQzvfY/ZzHOAqR2mOTG1JOwanXN1ghBunucR3INFYw4qMUU
|
||||
K/sLsO9rlXKuXSoZU99jcfXxmPpp5LP7f5W+B9Ukz4GggtGiSkxBn5ja/UL0v3D5/nO1jyq1zWos
|
||||
szGn/KDGTinnoliY9TV/FzZnr++U+z+dfcIw93qblPtNxVwUvcIF7N/7uZJRlbLMQS5KN0MFtQ4w
|
||||
YgrWGberjs+Y21vExmqN/eDAz0M4jsifrtZ5alh5ZyWmAMbaJxfe75qhgl7veMUUwDIEFfSMKjEF
|
||||
sAQXpUOrqJrk5nSwpLvT7yOMxxl+Ro9LUMFQUSWmoP348zN6XIIK7FgAWDWo/DZuAAAXpQMACCoA
|
||||
gM7iT/m5BgQA4P+YoQIAEFQAAIIKAEBQAQAIKgAABBUAgKACABBUAAB7+hfHbDX87cMFJQAAAABJ
|
||||
RU5ErkJggg==
|
|
@ -163,14 +163,16 @@ get/set up to 64 properties. The actual meaning of each property is described on
|
|||
<section id="DTV-FREQUENCY">
|
||||
<title><constant>DTV_FREQUENCY</constant></title>
|
||||
|
||||
<para>Central frequency of the channel, in HZ.</para>
|
||||
<para>Central frequency of the channel.</para>
|
||||
|
||||
<para>Notes:</para>
|
||||
<para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
|
||||
<para>1)For satellital delivery systems, it is measured in kHz.
|
||||
For the other ones, it is measured in Hz.</para>
|
||||
<para>2)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
|
||||
E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of
|
||||
the channel which is 6MHz.</para>
|
||||
|
||||
<para>2)As in ISDB-Tsb the channel consists of only one or three segments the
|
||||
<para>3)As in ISDB-Tsb the channel consists of only one or three segments the
|
||||
frequency step is 429kHz, 3*429 respectively. As for ISDB-T the
|
||||
central frequency of the channel is expected.</para>
|
||||
</section>
|
||||
|
@ -334,9 +336,10 @@ typedef enum fe_rolloff {
|
|||
<title>fe_delivery_system type</title>
|
||||
<para>Possible values: </para>
|
||||
<programlisting>
|
||||
|
||||
typedef enum fe_delivery_system {
|
||||
SYS_UNDEFINED,
|
||||
SYS_DVBC_ANNEX_AC,
|
||||
SYS_DVBC_ANNEX_A,
|
||||
SYS_DVBC_ANNEX_B,
|
||||
SYS_DVBT,
|
||||
SYS_DSS,
|
||||
|
@ -353,6 +356,7 @@ typedef enum fe_delivery_system {
|
|||
SYS_DAB,
|
||||
SYS_DVBT2,
|
||||
SYS_TURBO,
|
||||
SYS_DVBC_ANNEX_C,
|
||||
} fe_delivery_system_t;
|
||||
</programlisting>
|
||||
</section>
|
||||
|
@ -647,6 +651,18 @@ typedef enum fe_hierarchy {
|
|||
many data types via a single multiplex. The API will soon support this
|
||||
at which point this section will be expanded.</para>
|
||||
</section>
|
||||
<section id="DTV_ENUM_DELSYS">
|
||||
<title><constant>DTV_ENUM_DELSYS</constant></title>
|
||||
<para>A Multi standard frontend needs to advertise the delivery systems provided.
|
||||
Applications need to enumerate the provided delivery systems, before using
|
||||
any other operation with the frontend. Prior to it's introduction,
|
||||
FE_GET_INFO was used to determine a frontend type. A frontend which
|
||||
provides more than a single delivery system, FE_GET_INFO doesn't help much.
|
||||
Applications which intends to use a multistandard frontend must enumerate
|
||||
the delivery systems associated with it, rather than trying to use
|
||||
FE_GET_INFO. In the case of a legacy frontend, the result is just the same
|
||||
as with FE_GET_INFO, but in a more structured format </para>
|
||||
</section>
|
||||
</section>
|
||||
<section id="frontend-property-terrestrial-systems">
|
||||
<title>Properties used on terrestrial delivery systems</title>
|
||||
|
@ -721,14 +737,10 @@ typedef enum fe_hierarchy {
|
|||
<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem>
|
||||
<listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem>
|
||||
|
@ -767,7 +779,8 @@ typedef enum fe_hierarchy {
|
|||
<title>Properties used on cable delivery systems</title>
|
||||
<section id="dvbc-params">
|
||||
<title>DVB-C delivery system</title>
|
||||
<para>The DVB-C Annex-A/C is the widely used cable standard. Transmission uses QAM modulation.</para>
|
||||
<para>The DVB-C Annex-A is the widely used cable standard. Transmission uses QAM modulation.</para>
|
||||
<para>The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It supports a subset of the Annex A modulation types, and a roll-off of 0.13, instead of 0.15</para>
|
||||
<para>The following parameters are valid for DVB-C Annex A/C:</para>
|
||||
<itemizedlist mark='opencircle'>
|
||||
<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
|
||||
|
|
|
@ -45,8 +45,8 @@ transmission. The fontend types are given by fe_type_t type, defined as:</para>
|
|||
</row>
|
||||
<row>
|
||||
<entry id="FE_QAM"><constant>FE_QAM</constant></entry>
|
||||
<entry>For DVB-C annex A/C standard</entry>
|
||||
<entry><constant>SYS_DVBC_ANNEX_AC</constant></entry>
|
||||
<entry>For DVB-C annex A standard</entry>
|
||||
<entry><constant>SYS_DVBC_ANNEX_A</constant></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry id="FE_OFDM"><constant>FE_OFDM</constant></entry>
|
||||
|
@ -63,6 +63,10 @@ transmission. The fontend types are given by fe_type_t type, defined as:</para>
|
|||
<para>Newer formats like DVB-S2, ISDB-T, ISDB-S and DVB-T2 are not described at the above, as they're
|
||||
supported via the new <link linkend="FE_GET_SET_PROPERTY">FE_GET_PROPERTY/FE_GET_SET_PROPERTY</link> ioctl's, using the <link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> parameter.
|
||||
</para>
|
||||
|
||||
<para>The usage of this field is deprecated, as it doesn't report all supported standards, and
|
||||
will provide an incomplete information for frontends that support multiple delivery systems.
|
||||
Please use <link linkend="DTV_ENUM_DELSYS">DTV_ENUM_DELSYS</link> instead.</para>
|
||||
</section>
|
||||
|
||||
<section id="fe-caps-t">
|
||||
|
|
|
@ -0,0 +1,206 @@
|
|||
iVBORw0KGgoAAAANSUhEUgAABIsAAAHpCAYAAAACi7yYAAAAAXNSR0IArs4c6QAAAAZiS0dEAP8A
|
||||
/wD/oL2nkwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAAd0SU1FB9sLCBAiCLMGMtAAACAASURBVHja
|
||||
7d3rkds4FgZQaMohTBY7ObRCV+fgyWJy4P6wJavVIgmSAIjHOVWu3bElPkBSAj5dgpdpmqYAAAAA
|
||||
ACGEvzQBAAAAAHfCIgAAAAAehEUAAAAAPAiLAAAAAHgQFgEAAADwICwCAAAA4EFYBAAAAMDDD00A
|
||||
21wul9XXTNN0aHnP749Z39o2rK0jRzssLX/pvVve9+61S69Jdey2bn/sMTx6TAAA/cIW+oVb+2tb
|
||||
3p+izwioLIJsHYe9X+a979vae89ut6Pb1+txBwD0C3vZN0ERrFNZBAct/ZJxuVx2Vdg8v+/oLyEx
|
||||
69j7xbq2/1u2e0u75Th2Mevf8ytVzDkDAOgXjtYv3LquVP0nQRHEUVkEBTsJve/r0hfu2hdz7e0W
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
SgAAAOkJirYTFkEl1kKcFGFS7HIESgAAHOpzuhWNStQSFH3ePpsKj4RF0IhS1UkxyxEmAQAAtasp
|
||||
KGqNsAg64nY3AACg6jFLoYozQdExwiIY7cPZ7W4AAEDHBEXHCYuAL2q63S12ewAAgPSmaWpumwVF
|
||||
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|
||||
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|
||||
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|
||||
jvmTAADgfKMGRSEIiwCaY/4kAKAl5i1q85iNbuSgKARhEUCX3O4GAAD7jB4UhSAsAhiW290AACjW
|
||||
92ykukxQ9IuwCID3X+gV3e4Wuz0AALCXoOgPYREAu5k/CQCgL6POVyQo+kpYBEBW5k8CAKBmgqLv
|
||||
hEUAnM78SQDQN09Ea+c4jUZQ9J6wCIDqmT8JAIDUBEXzhEUAdMH8SQAAB/o3g1UVCYqWCYsAGIb5
|
||||
kwAAEBStExYBwBPzJwEAI1FR9HnKemsnLAKADdzuBgDQJkFRPGERACTmdjcAePO95YloVR6TIn2j
|
||||
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|
||||
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|
||||
RQDAonuYNH3p/Ny+do4igqCoTtbMch6B1b+XEP43OSgAEOHsuYnOqCoSFKUhLAIADoupCEoVKIV/
|
||||
VzqewiQAGJKgKB1hEQBQRLFA6d+IXzEFSgB0aKSnnH3rQwiKkhIWAQDVmAuUrtfrr05wovmTBEoA
|
||||
0A9BUXrCIgCgHTEBzr+J5kcQKAGEEH7NO5OyYqX1J6KNXL2z9bwpQVCUh7AIAOhLTYGSMAkAihEU
|
||||
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|
||||
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|
||||
8ydNP0O4/ONwANC+kYOiEIRFAABjKBQoTT+fOtrhGvWez/9ujg80wLxFLJ0bPRk9KApBWAQAwF2p
|
||||
291eO+V/X1dfI1ACoARB0S/CIgAA4qyESZfL5UtlUdLOu0AJoEo9VRUJiv4QFgEAkG7Q8E8I06OT
|
||||
fYvrnEcEQSmWI0wCYPY7RFD0hbAIAIBTxYQ4KQIl1UkA6ago6puwCACA6q2FOKWqk2K2BYB2CIre
|
||||
ExYBANC8UtVJscsRKNErT0Tjfh70QFA0T1gEAMAQagqUhEkA5xIULRMWAQDAfbBg/iSAWSqKxiEs
|
||||
AgCADcyfBNCus4Ki1/XWTlgEAAAJud0NtjFvUf1UFKVdbwuERQAAUJjb3QDKEhRtIywCAIAKCZSo
|
||||
VeonolH3se6BoGg7YREAADTK/EkAK59flQRFn7fPpsIjYREAAHTK/EnAXj1UFdUUFLVGWAQAAANz
|
||||
uxvQI0HRMcIiAABgkUCJV6nnLfJEtHqOaw8ERccJiwAAgMPMnwTUQFCUhrAIAADIzvxJUKeeKroE
|
||||
RekIiwAAgCq43S3xAPZpPwVk9E5QlJawCAAAaEYNt7u1GLx8/H0VGNHtvFCCovSERQAAQDdKVCe1
|
||||
WpkkMKJHgqI8hEUAAMBQSlQn1TBv0ud/t2/bkTIw8kS0Oo3choKidIRFAAAAzwO/CsKkmO2I3Zec
|
||||
gRFUc90KipISFgEAAGwZlJ44b9KekCdnYNRCFYtqpQGuSUFRcsIiAACAlAPXjPMm7b29TYUR3V5v
|
||||
gqIshEUAAAClB7iZAqWt74kJjKafjhdjGy0oCkFYBAAAUKV3IU6qW9y+L3PS4PDu+hgwKApBWAQA
|
||||
ANCMUvMlAeMGRSEIiwAAALqR6va2PXMZnTWwtl7r7Wm9tRAWAQAADCBn1ZEgwXqtty/Coozc9QsA
|
||||
AJwt5glqHwb01mu9p663NsIiAACAzsQERAb01mu9day3RsIiAACATpQKiUYc0Fuv9Y5EWJTY5+2m
|
||||
EQAAgHrGKAkDolEH9NZrvaMRFgEAAHQoR0g04oDeeq13RMIiAACATuQKiEYd0Fuv9Y7qL00AAACA
|
||||
Ab31Wi93wiIAAAAM6K3XenkQFgEAAGBAb73WW3C9tRMWAQAAYEBvvdZbaL0tEBYBAABgQG+91ltg
|
||||
va0QFgEAAGBAb73Wm3m9LREWAQAAMEuQYL3W2856UxEWAQAA8JYBvfVabzvrTekyTdO0+U2XSwgh
|
||||
hNvt5tMTAMjuer2GEELY0W2hZMfydx9xenSO9RWhFS3fLgMtKhkgffzuR11+/3dMf0plEQAAAAAP
|
||||
wiIAAAAAHn5oAgAAgLG1OKcKkI/KIgAAAAAehEUAAAAAPAiLAAAAAHgQFgEAAADwYIJrAAAAivq4
|
||||
frz9+7mJtre8/vm1SxN3z71ubl1bl5n6PUe2K3adW4/DWvsfPb5737PlmJrc/T2VRQAAABSzNHB/
|
||||
929bX3/W9u/ZzjO2/+gxOrrcrcve856alt8qlUUAAAAUsVb18zpoX3r9/d8+rh+L1Sdbq19itu91
|
||||
uXu28/73qapz9tiyjyWWneo9Z+xvb1QWAQAAkF3M7WGxAczSa3Pac9vbnu08M7RYu+3r8/b5eM3W
|
||||
dj/aFjmO8xnnUQuERQAAABSzNQhZen3Mv81VK6UOZPZu52i3Qe1p99zhmYqi79yGBgAAABFShjqf
|
||||
t88vy4sNsfZMon10H9fmYzozbMndHqMSFgEAANCleyBzDzS2VBWVmDfoXfVTrsqnFPv4/HevYRd9
|
||||
ERYBAABApBwhzlxodHRC59T7WGM4pIIoD2ERAAAAxWy9bWntaWdrnquL7v8dY2sIcXQ7n9d55oTd
|
||||
e7Z9yzHds2+520OF1HcmuAYAACC7mKdOzT1ZbG0enVqeHrZlO1sLKO5PQXv9s8WeY5b7ONdyHtVG
|
||||
ZREAAABFPM9zs6UqaOn1MQP8Ek/T2rOde+ZFamVC55T7lqo9SsxD1QuVRQAAABSz9RHzex9Jb7+O
|
||||
i7l1b8utc3uqkfa8p6blt+oyTdO0+U2XSwghhNvtpgUBgOyu12sIIYQd3RZKdix/9xGnRwdcXxEA
|
||||
zvbxux91+f3fMf0plUUAAAAAPJizCACA09yrxl7NVbBvef3za5cq4udeN7eurctM/Z4j2xW7ztT7
|
||||
eH/t2nGda//YZS7tz1q77DlmAL1SWQQAwCmWBvbv/m3r68/a/j3becb2x+5jDccixTLn9qXm9oc9
|
||||
Pq4fi38gRrHKopikvvQvG3vWs+fLxS8yfpEBAOb7DDH9taXX3//ter0u9pP29AvXtu91uXu2c6mP
|
||||
d6RftsWWdR89FiXsOWZ7zw+ojcmaSaFIZVGqXx5S/nqzd3v37r9fZAAA1sOGd3+/9votPz6msue2
|
||||
tz3bWWvgcsaxOLq81tof4EzZK4u2/mq05XVry1/7ZWPLLw4pvlBTbXcNHQS/yAAAOfoae19/u90W
|
||||
K5zvP3jN9V9S9lf2budaFXlpe6uacrRnquW11P4AZ8paWbT1V6PUy6/h1wO/yPjCBQD6kzNcWqrk
|
||||
fve61z9792duOTX05e7bkONHyL3tD9CzIreh5f6CWftlo9aORMntzn1Puy9XAKBmr2HDliqSEkHK
|
||||
7XYTWpx8fmh/gD9+1LhRZ06SfOQLodQEhEe+BN+VYKdc9mtbqCoCAHqVo5/zroJmy5QKqfclV9+x
|
||||
tr7snvYH6NmPkXe+9nCn1Q6T0AgAiO2LbekjrD3tLKav8lwtErvuPU/KPbKdc/2qVo5diW0+crtd
|
||||
D+0PkNtfNW7UvQz0tRz0zKdb7Nnu5+2v5YumxPbMlfECALz2tbY+DGTtCbO1PBxky3a21E86eiy2
|
||||
PiE4VT+9l/YHKKVIZdHR0s21JyDs/WWjhvmM/CIDAIzouX+3pSpo6fUxfbsSc2nu2c49fdaUUzds
|
||||
DWy27mOq45dif1K1P0DPslYWbf3VKPXya3uKQ6rt9osMANCDrQ/7qPmhJr3u17uK8b3bnGo/j94F
|
||||
0Op5BVDSZZqmafObLpdNH55rQcJrBcrWx83HLv/19ak+/Pc+Qn7rdqfc19flbA1+UuwLAGz9rt3R
|
||||
baFkx/J3H/F+lD59/wPA6T5+96Muv/87pj9VZM6iFGn93mXU8uQGv8gAAAAALShSWQQAcITKokY6
|
||||
liqLAKA6eyqLfmg2AADoj2kCANhLWAQAAB0SBgGwl7BohV9kAAAAgJEIi1YIgwAAAICRCIsAAMji
|
||||
Y6VCGwCo01+aAAAAAIA7lUUAACR10QQA0PZ3+TRN0+Y3XXQBAIDydnRbKNmx1EcEgC76UyqLAAAo
|
||||
1vkEAOq3KyzSEQAAAADokwmuAQAAAHgQFgEAAADwICwCAAAA4EFYBAAAAMCDsAgAAACAB2ERAAAA
|
||||
AA/CIgAAAAAehEUAAAAAPAiLAAAAAHgQFgEAAADwICwCAAAA4EFYBAAAAMCDsAgAAACAB2ERAAAA
|
||||
AA/CIgAAAAAehEUAAAAAPAiLAAAAAHgQFgEAAADwICwCAAAA4EFYBAAAAMCDsAgAAACAB2ERAAAA
|
||||
AA/CIgAAAAAe/g/10lQlA3JSSwAAAABJRU5ErkJggg==
|
|
@ -178,11 +178,3 @@ in the frequency range from 87,5 to 108,0 MHz</title>
|
|||
</biblioentry>
|
||||
|
||||
</bibliography>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -1168,6 +1168,8 @@ dheight = format.fmt.pix.height;
|
|||
</section>
|
||||
</section>
|
||||
|
||||
&sub-selection-api;
|
||||
|
||||
<section id="streaming-par">
|
||||
<title>Streaming Parameters</title>
|
||||
|
||||
|
@ -1195,11 +1197,3 @@ separate parameters for input and output devices.</para>
|
|||
<para>These ioctls are optional, drivers need not implement
|
||||
them. If so, they return the &EINVAL;.</para>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -1082,7 +1082,7 @@ until the time in the timestamp field has arrived. I would like to
|
|||
follow SGI's lead, and adopt a multimedia timestamping system like
|
||||
their UST (Unadjusted System Time). See
|
||||
http://web.archive.org/web/*/http://reality.sgi.com
|
||||
/cpirazzi_engr/lg/time/intro.html.
|
||||
/cpirazzi_engr/lg/time/intro.html.
|
||||
UST uses timestamps that are 64-bit signed integers
|
||||
(not struct timeval's) and given in nanosecond units. The UST clock
|
||||
starts at zero when the system is booted and runs continuously and
|
||||
|
@ -2376,6 +2376,23 @@ that used it. It was originally scheduled for removal in 2.6.35.
|
|||
<listitem>
|
||||
<para>V4L2_CTRL_FLAG_VOLATILE was added to signal volatile controls to userspace.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Add selection API for extended control over cropping and
|
||||
composing. Does not affect the compatibility of current drivers and
|
||||
applications. See <link linkend="selection-api"> selection API </link> for
|
||||
details.</para>
|
||||
</listitem>
|
||||
</orderedlist>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>V4L2 in Linux 3.3</title>
|
||||
<orderedlist>
|
||||
<listitem>
|
||||
<para>Added <constant>V4L2_CID_ALPHA_COMPONENT</constant> control
|
||||
to the <link linkend="control">User controls class</link>.
|
||||
</para>
|
||||
</listitem>
|
||||
</orderedlist>
|
||||
</section>
|
||||
|
||||
|
@ -2489,6 +2506,9 @@ ioctls.</para>
|
|||
<listitem>
|
||||
<para>&VIDIOC-CREATE-BUFS; and &VIDIOC-PREPARE-BUF; ioctls.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Selection API. <xref linkend="selection-api" /></para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</section>
|
||||
|
||||
|
@ -2507,11 +2527,3 @@ interfaces and should not be implemented in new drivers.</para>
|
|||
</itemizedlist>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -323,12 +323,6 @@ minimum value disables backlight compensation.</entry>
|
|||
<entry>Switch on or off the illuminator 1 or 2 of the device
|
||||
(usually a microscope).</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_CID_LASTP1</constant></entry>
|
||||
<entry></entry>
|
||||
<entry>End of the predefined control IDs (currently
|
||||
<constant>V4L2_CID_ILLUMINATORS_2</constant> + 1).</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_CID_MIN_BUFFERS_FOR_CAPTURE</constant></entry>
|
||||
<entry>integer</entry>
|
||||
|
@ -345,6 +339,25 @@ and used as a hint to determine the number of OUTPUT buffers to pass to REQBUFS.
|
|||
The value is the minimum number of OUTPUT buffers that is necessary for hardware
|
||||
to work.</entry>
|
||||
</row>
|
||||
<row id="v4l2-alpha-component">
|
||||
<entry><constant>V4L2_CID_ALPHA_COMPONENT</constant></entry>
|
||||
<entry>integer</entry>
|
||||
<entry> Sets the alpha color component on the capture device or on
|
||||
the capture buffer queue of a mem-to-mem device. When a mem-to-mem
|
||||
device produces frame format that includes an alpha component
|
||||
(e.g. <link linkend="rgb-formats">packed RGB image formats</link>)
|
||||
and the alpha value is not defined by the mem-to-mem input data
|
||||
this control lets you select the alpha component value of all
|
||||
pixels. It is applicable to any pixel format that contains an alpha
|
||||
component.
|
||||
</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_CID_LASTP1</constant></entry>
|
||||
<entry></entry>
|
||||
<entry>End of the predefined control IDs (currently
|
||||
<constant>V4L2_CID_ALPHA_COMPONENT</constant> + 1).</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_CID_PRIVATE_BASE</constant></entry>
|
||||
<entry></entry>
|
||||
|
@ -3329,6 +3342,16 @@ interface and may change in the future.</para>
|
|||
<entry>The short circuit protection of the flash
|
||||
controller has been triggered.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_FLASH_FAULT_OVER_CURRENT</constant></entry>
|
||||
<entry>Current in the LED power supply has exceeded the limit
|
||||
specific to the flash controller.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_FLASH_FAULT_INDICATOR</constant></entry>
|
||||
<entry>The flash controller has detected a short or open
|
||||
circuit condition on the indicator LED.</entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</entrytbl>
|
||||
</row>
|
||||
|
@ -3357,11 +3380,3 @@ interface and may change in the future.</para>
|
|||
|
||||
</section>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "common.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -108,11 +108,3 @@ linkend="mmap">memory mapping</link> or <link
|
|||
linkend="userp">user pointer</link>) I/O. See <xref
|
||||
linkend="io" /> for details.</para>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -16,11 +16,3 @@ Applications send data to be converted to the driver through a
|
|||
I/O.</para>
|
||||
|
||||
<para>[to do]</para>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -15,11 +15,3 @@ receive the result data either with &func-read; and &func-write;
|
|||
functions, or through the streaming I/O mechanism.</para>
|
||||
|
||||
<para>[to do]</para>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -41,11 +41,3 @@ intermediate step leading up to that information. See the documentation for the
|
|||
event you want to subscribe to whether this is applicable for that event or not.</para>
|
||||
</listitem>
|
||||
</orderedlist></para>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -154,11 +154,3 @@ data flow. For more information see <xref linkend="crop" />.</para>
|
|||
however the framebuffer interface of the driver may support the
|
||||
<constant>FBIOBLANK</constant> ioctl.</para>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -104,11 +104,3 @@ linkend="mmap">memory mapping</link> or <link
|
|||
linkend="userp">user pointer</link>) I/O. See <xref
|
||||
linkend="io" /> for details.</para>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -369,11 +369,3 @@ reasons. <!-- video4linux-list@redhat.com on 22 Oct 2002 subject
|
|||
<para>To start or stop the frame buffer overlay applications call
|
||||
the &VIDIOC-OVERLAY; ioctl.</para>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
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|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -47,11 +47,3 @@ depending on the selected frequency. The &VIDIOC-G-TUNER; or
|
|||
&VIDIOC-G-MODULATOR; ioctl
|
||||
reports the supported frequency range.</para>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
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|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
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|
||||
-->
|
||||
|
|
|
@ -337,11 +337,3 @@ an &EBUSY; if the required hardware resources are temporarily
|
|||
unavailable, for example the device is already in use by another
|
||||
process.</para>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -29,10 +29,10 @@ returned by the &VIDIOC-QUERYCAP; ioctl. Any tuner that supports RDS
|
|||
will set the <constant>V4L2_TUNER_CAP_RDS</constant> flag in
|
||||
the <structfield>capability</structfield> field of &v4l2-tuner;. If
|
||||
the driver only passes RDS blocks without interpreting the data
|
||||
the <constant>V4L2_TUNER_SUB_RDS_BLOCK_IO</constant> flag has to be
|
||||
the <constant>V4L2_TUNER_CAP_RDS_BLOCK_IO</constant> flag has to be
|
||||
set, see <link linkend="reading-rds-data">Reading RDS data</link>.
|
||||
For future use the
|
||||
flag <constant>V4L2_TUNER_SUB_RDS_CONTROLS</constant> has also been
|
||||
flag <constant>V4L2_TUNER_CAP_RDS_CONTROLS</constant> has also been
|
||||
defined. However, a driver for a radio tuner with this capability does
|
||||
not yet exist, so if you are planning to write such a driver you
|
||||
should discuss this on the linux-media mailing list: &v4l-ml;.</para>
|
||||
|
@ -52,9 +52,9 @@ field of &v4l2-modulator;.
|
|||
In order to enable the RDS transmission one must set the <constant>V4L2_TUNER_SUB_RDS</constant>
|
||||
bit in the <structfield>txsubchans</structfield> field of &v4l2-modulator;.
|
||||
If the driver only passes RDS blocks without interpreting the data
|
||||
the <constant>V4L2_TUNER_SUB_RDS_BLOCK_IO</constant> flag has to be set. If the
|
||||
the <constant>V4L2_TUNER_CAP_RDS_BLOCK_IO</constant> flag has to be set. If the
|
||||
tuner is capable of handling RDS entities like program identification codes and radio
|
||||
text, the flag <constant>V4L2_TUNER_SUB_RDS_CONTROLS</constant> should be set,
|
||||
text, the flag <constant>V4L2_TUNER_CAP_RDS_CONTROLS</constant> should be set,
|
||||
see <link linkend="writing-rds-data">Writing RDS data</link> and
|
||||
<link linkend="fm-tx-controls">FM Transmitter Control Reference</link>.</para>
|
||||
</section>
|
||||
|
@ -194,11 +194,3 @@ as follows:</para>
|
|||
</tgroup>
|
||||
</table>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -697,12 +697,3 @@ Sliced VBI services</link> for a description of the line payload.</entry>
|
|||
|
||||
</section>
|
||||
</section>
|
||||
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -27,11 +27,3 @@ kernel 2.6.37.</para>
|
|||
|
||||
<para>Modern devices all use the <link linkend="raw-vbi">raw</link> or
|
||||
<link linkend="sliced">sliced</link> VBI API.</para>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -198,11 +198,3 @@ devices with the videodev module.</para>
|
|||
<para>to do</para>
|
||||
</section>
|
||||
-->
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -60,11 +60,3 @@ descriptor.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -69,11 +69,3 @@ their respective function and parameters are specified in <xref
|
|||
the parameter remains unmodified.</para>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -181,11 +181,3 @@ complete the request.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -74,11 +74,3 @@ mapped yet.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -111,11 +111,3 @@ system has been reached.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -117,11 +117,3 @@ than <constant>OPEN_MAX</constant>.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -179,11 +179,3 @@ type of device.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -128,11 +128,3 @@ zero or greater than <constant>FD_SETSIZE</constant>.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -126,11 +126,3 @@ type of device.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -1282,11 +1282,3 @@ line, top field first. The bottom field is transmitted first.</entry>
|
|||
</mediaobject>
|
||||
</figure>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -158,10 +158,3 @@ still don't use libv4l.</para>
|
|||
</section>
|
||||
|
||||
</section>
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -60,11 +60,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -137,11 +137,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -141,11 +141,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -144,11 +144,3 @@ CbCr plane has as many pad bytes after its rows.</para>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -64,11 +64,3 @@ layout of macroblocks</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -164,11 +164,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -0,0 +1,121 @@
|
|||
<refentry>
|
||||
<refmeta>
|
||||
<refentrytitle>V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')</refentrytitle>
|
||||
&manvol;
|
||||
</refmeta>
|
||||
<refnamediv>
|
||||
<refname id="V4L2-PIX-FMT-NV24"><constant>V4L2_PIX_FMT_NV24</constant></refname>
|
||||
<refname id="V4L2-PIX-FMT-NV42"><constant>V4L2_PIX_FMT_NV42</constant></refname>
|
||||
<refpurpose>Formats with full horizontal and vertical
|
||||
chroma resolutions, also known as YUV 4:4:4. One luminance and one
|
||||
chrominance plane with alternating chroma samples as opposed to
|
||||
<constant>V4L2_PIX_FMT_YVU420</constant></refpurpose>
|
||||
</refnamediv>
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
|
||||
<para>These are two-plane versions of the YUV 4:4:4 format. The three
|
||||
components are separated into two sub-images or planes. The Y plane is
|
||||
first, with each Y sample stored in one byte per pixel. For
|
||||
<constant>V4L2_PIX_FMT_NV24</constant>, a combined CbCr plane
|
||||
immediately follows the Y plane in memory. The CbCr plane has the same
|
||||
width and height, in pixels, as the Y plane (and the image). Each line
|
||||
contains one CbCr pair per pixel, with each Cb and Cr sample stored in
|
||||
one byte. <constant>V4L2_PIX_FMT_NV42</constant> is the same except that
|
||||
the Cb and Cr samples are swapped, the CrCb plane starts with a Cr
|
||||
sample.</para>
|
||||
|
||||
<para>If the Y plane has pad bytes after each row, then the CbCr plane
|
||||
has twice as many pad bytes after its rows.</para>
|
||||
|
||||
<example>
|
||||
<title><constant>V4L2_PIX_FMT_NV24</constant> 4 × 4
|
||||
pixel image</title>
|
||||
|
||||
<formalpara>
|
||||
<title>Byte Order.</title>
|
||||
<para>Each cell is one byte.
|
||||
<informaltable frame="none">
|
||||
<tgroup cols="9" align="center">
|
||||
<colspec align="left" colwidth="2*" />
|
||||
<tbody valign="top">
|
||||
<row>
|
||||
<entry>start + 0:</entry>
|
||||
<entry>Y'<subscript>00</subscript></entry>
|
||||
<entry>Y'<subscript>01</subscript></entry>
|
||||
<entry>Y'<subscript>02</subscript></entry>
|
||||
<entry>Y'<subscript>03</subscript></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>start + 4:</entry>
|
||||
<entry>Y'<subscript>10</subscript></entry>
|
||||
<entry>Y'<subscript>11</subscript></entry>
|
||||
<entry>Y'<subscript>12</subscript></entry>
|
||||
<entry>Y'<subscript>13</subscript></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>start + 8:</entry>
|
||||
<entry>Y'<subscript>20</subscript></entry>
|
||||
<entry>Y'<subscript>21</subscript></entry>
|
||||
<entry>Y'<subscript>22</subscript></entry>
|
||||
<entry>Y'<subscript>23</subscript></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>start + 12:</entry>
|
||||
<entry>Y'<subscript>30</subscript></entry>
|
||||
<entry>Y'<subscript>31</subscript></entry>
|
||||
<entry>Y'<subscript>32</subscript></entry>
|
||||
<entry>Y'<subscript>33</subscript></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>start + 16:</entry>
|
||||
<entry>Cb<subscript>00</subscript></entry>
|
||||
<entry>Cr<subscript>00</subscript></entry>
|
||||
<entry>Cb<subscript>01</subscript></entry>
|
||||
<entry>Cr<subscript>01</subscript></entry>
|
||||
<entry>Cb<subscript>02</subscript></entry>
|
||||
<entry>Cr<subscript>02</subscript></entry>
|
||||
<entry>Cb<subscript>03</subscript></entry>
|
||||
<entry>Cr<subscript>03</subscript></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>start + 24:</entry>
|
||||
<entry>Cb<subscript>10</subscript></entry>
|
||||
<entry>Cr<subscript>10</subscript></entry>
|
||||
<entry>Cb<subscript>11</subscript></entry>
|
||||
<entry>Cr<subscript>11</subscript></entry>
|
||||
<entry>Cb<subscript>12</subscript></entry>
|
||||
<entry>Cr<subscript>12</subscript></entry>
|
||||
<entry>Cb<subscript>13</subscript></entry>
|
||||
<entry>Cr<subscript>13</subscript></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>start + 32:</entry>
|
||||
<entry>Cb<subscript>20</subscript></entry>
|
||||
<entry>Cr<subscript>20</subscript></entry>
|
||||
<entry>Cb<subscript>21</subscript></entry>
|
||||
<entry>Cr<subscript>21</subscript></entry>
|
||||
<entry>Cb<subscript>22</subscript></entry>
|
||||
<entry>Cr<subscript>22</subscript></entry>
|
||||
<entry>Cb<subscript>23</subscript></entry>
|
||||
<entry>Cr<subscript>23</subscript></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>start + 40:</entry>
|
||||
<entry>Cb<subscript>30</subscript></entry>
|
||||
<entry>Cr<subscript>30</subscript></entry>
|
||||
<entry>Cb<subscript>31</subscript></entry>
|
||||
<entry>Cr<subscript>31</subscript></entry>
|
||||
<entry>Cb<subscript>32</subscript></entry>
|
||||
<entry>Cr<subscript>32</subscript></entry>
|
||||
<entry>Cb<subscript>33</subscript></entry>
|
||||
<entry>Cr<subscript>33</subscript></entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</tgroup>
|
||||
</informaltable>
|
||||
</para>
|
||||
</formalpara>
|
||||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
|
@ -428,8 +428,11 @@ colorspace <constant>V4L2_COLORSPACE_SRGB</constant>.</para>
|
|||
<para>Bit 7 is the most significant bit. The value of a = alpha
|
||||
bits is undefined when reading from the driver, ignored when writing
|
||||
to the driver, except when alpha blending has been negotiated for a
|
||||
<link linkend="overlay">Video Overlay</link> or <link
|
||||
linkend="osd">Video Output Overlay</link>.</para>
|
||||
<link linkend="overlay">Video Overlay</link> or <link linkend="osd">
|
||||
Video Output Overlay</link> or when alpha component has been configured
|
||||
for a <link linkend="capture">Video Capture</link> by means of <link
|
||||
linkend="v4l2-alpha-component"> <constant>V4L2_CID_ALPHA_COMPONENT
|
||||
</constant> </link> control.</para>
|
||||
|
||||
<example>
|
||||
<title><constant>V4L2_PIX_FMT_BGR24</constant> 4 × 4 pixel
|
||||
|
@ -930,11 +933,3 @@ See &v4l-dvb; for access instructions.</para>
|
|||
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -234,11 +234,3 @@ linkend="osd">Video Output Overlay</link>.</para>
|
|||
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -81,11 +81,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -65,11 +65,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -65,11 +65,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -65,11 +65,3 @@ columns and rows.</para>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -118,11 +118,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -118,11 +118,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -79,11 +79,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -147,11 +147,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -131,11 +131,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -145,11 +145,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -147,11 +147,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -152,11 +152,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -151,11 +151,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -118,11 +118,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -118,11 +118,3 @@ pixel image</title>
|
|||
</example>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "pixfmt.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -714,6 +714,7 @@ information.</para>
|
|||
&sub-nv12m;
|
||||
&sub-nv12mt;
|
||||
&sub-nv16;
|
||||
&sub-nv24;
|
||||
&sub-m420;
|
||||
</section>
|
||||
|
||||
|
@ -890,6 +891,11 @@ kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.hm
|
|||
<entry>'M310'</entry>
|
||||
<entry>Compressed BGGR Bayer format used by the gspca driver.</entry>
|
||||
</row>
|
||||
<row id="V4L2-PIX-FMT-JL2005BCD">
|
||||
<entry><constant>V4L2_PIX_FMT_JL2005BCD</constant></entry>
|
||||
<entry>'JL20'</entry>
|
||||
<entry>JPEG compressed RGGB Bayer format used by the gspca driver.</entry>
|
||||
</row>
|
||||
<row id="V4L2-PIX-FMT-OV511">
|
||||
<entry><constant>V4L2_PIX_FMT_OV511</constant></entry>
|
||||
<entry>'O511'</entry>
|
||||
|
@ -997,11 +1003,3 @@ the other bits are set to 0.</entry>
|
|||
</tgroup>
|
||||
</table>
|
||||
</section>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -0,0 +1,321 @@
|
|||
<section id="selection-api">
|
||||
|
||||
<title>Experimental API for cropping, composing and scaling</title>
|
||||
|
||||
<note>
|
||||
<title>Experimental</title>
|
||||
|
||||
<para>This is an <link linkend="experimental">experimental</link>
|
||||
interface and may change in the future.</para>
|
||||
</note>
|
||||
|
||||
<section>
|
||||
<title>Introduction</title>
|
||||
|
||||
<para>Some video capture devices can sample a subsection of a picture and
|
||||
shrink or enlarge it to an image of arbitrary size. Next, the devices can
|
||||
insert the image into larger one. Some video output devices can crop part of an
|
||||
input image, scale it up or down and insert it at an arbitrary scan line and
|
||||
horizontal offset into a video signal. We call these abilities cropping,
|
||||
scaling and composing.</para>
|
||||
|
||||
<para>On a video <emphasis>capture</emphasis> device the source is a video
|
||||
signal, and the cropping target determine the area actually sampled. The sink
|
||||
is an image stored in a memory buffer. The composing area specifies which part
|
||||
of the buffer is actually written to by the hardware. </para>
|
||||
|
||||
<para>On a video <emphasis>output</emphasis> device the source is an image in a
|
||||
memory buffer, and the cropping target is a part of an image to be shown on a
|
||||
display. The sink is the display or the graphics screen. The application may
|
||||
select the part of display where the image should be displayed. The size and
|
||||
position of such a window is controlled by the compose target.</para>
|
||||
|
||||
<para>Rectangles for all cropping and composing targets are defined even if the
|
||||
device does supports neither cropping nor composing. Their size and position
|
||||
will be fixed in such a case. If the device does not support scaling then the
|
||||
cropping and composing rectangles have the same size.</para>
|
||||
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>Selection targets</title>
|
||||
|
||||
<figure id="sel-targets-capture">
|
||||
<title>Cropping and composing targets</title>
|
||||
<mediaobject>
|
||||
<imageobject>
|
||||
<imagedata fileref="selection.png" format="PNG" />
|
||||
</imageobject>
|
||||
<textobject>
|
||||
<phrase>Targets used by a cropping, composing and scaling
|
||||
process</phrase>
|
||||
</textobject>
|
||||
</mediaobject>
|
||||
</figure>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
|
||||
<title>Configuration</title>
|
||||
|
||||
<para>Applications can use the <link linkend="vidioc-g-selection">selection
|
||||
API</link> to select an area in a video signal or a buffer, and to query for
|
||||
default settings and hardware limits.</para>
|
||||
|
||||
<para>Video hardware can have various cropping, composing and scaling
|
||||
limitations. It may only scale up or down, support only discrete scaling
|
||||
factors, or have different scaling abilities in the horizontal and vertical
|
||||
directions. Also it may not support scaling at all. At the same time the
|
||||
cropping/composing rectangles may have to be aligned, and both the source and
|
||||
the sink may have arbitrary upper and lower size limits. Therefore, as usual,
|
||||
drivers are expected to adjust the requested parameters and return the actual
|
||||
values selected. An application can control the rounding behaviour using <link
|
||||
linkend="v4l2-sel-flags"> constraint flags </link>.</para>
|
||||
|
||||
<section>
|
||||
|
||||
<title>Configuration of video capture</title>
|
||||
|
||||
<para>See figure <xref linkend="sel-targets-capture" /> for examples of the
|
||||
selection targets available for a video capture device. It is recommended to
|
||||
configure the cropping targets before to the composing targets.</para>
|
||||
|
||||
<para>The range of coordinates of the top left corner, width and height of
|
||||
areas that can be sampled is given by the <constant> V4L2_SEL_TGT_CROP_BOUNDS
|
||||
</constant> target. It is recommended for the driver developers to put the
|
||||
top/left corner at position <constant> (0,0) </constant>. The rectangle's
|
||||
coordinates are expressed in pixels.</para>
|
||||
|
||||
<para>The top left corner, width and height of the source rectangle, that is
|
||||
the area actually sampled, is given by the <constant> V4L2_SEL_TGT_CROP_ACTIVE
|
||||
</constant> target. It uses the same coordinate system as <constant>
|
||||
V4L2_SEL_TGT_CROP_BOUNDS </constant>. The active cropping area must lie
|
||||
completely inside the capture boundaries. The driver may further adjust the
|
||||
requested size and/or position according to hardware limitations.</para>
|
||||
|
||||
<para>Each capture device has a default source rectangle, given by the
|
||||
<constant> V4L2_SEL_TGT_CROP_DEFAULT </constant> target. This rectangle shall
|
||||
over what the driver writer considers the complete picture. Drivers shall set
|
||||
the active crop rectangle to the default when the driver is first loaded, but
|
||||
not later.</para>
|
||||
|
||||
<para>The composing targets refer to a memory buffer. The limits of composing
|
||||
coordinates are obtained using <constant> V4L2_SEL_TGT_COMPOSE_BOUNDS
|
||||
</constant>. All coordinates are expressed in pixels. The rectangle's top/left
|
||||
corner must be located at position <constant> (0,0) </constant>. The width and
|
||||
height are equal to the image size set by <constant> VIDIOC_S_FMT </constant>.
|
||||
</para>
|
||||
|
||||
<para>The part of a buffer into which the image is inserted by the hardware is
|
||||
controlled by the <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.
|
||||
The rectangle's coordinates are also expressed in the same coordinate system as
|
||||
the bounds rectangle. The composing rectangle must lie completely inside bounds
|
||||
rectangle. The driver must adjust the composing rectangle to fit to the
|
||||
bounding limits. Moreover, the driver can perform other adjustments according
|
||||
to hardware limitations. The application can control rounding behaviour using
|
||||
<link linkend="v4l2-sel-flags"> constraint flags </link>.</para>
|
||||
|
||||
<para>For capture devices the default composing rectangle is queried using
|
||||
<constant> V4L2_SEL_TGT_COMPOSE_DEFAULT </constant>. It is usually equal to the
|
||||
bounding rectangle.</para>
|
||||
|
||||
<para>The part of a buffer that is modified by the hardware is given by
|
||||
<constant> V4L2_SEL_TGT_COMPOSE_PADDED </constant>. It contains all pixels
|
||||
defined using <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> plus all
|
||||
padding data modified by hardware during insertion process. All pixels outside
|
||||
this rectangle <emphasis>must not</emphasis> be changed by the hardware. The
|
||||
content of pixels that lie inside the padded area but outside active area is
|
||||
undefined. The application can use the padded and active rectangles to detect
|
||||
where the rubbish pixels are located and remove them if needed.</para>
|
||||
|
||||
</section>
|
||||
|
||||
<section>
|
||||
|
||||
<title>Configuration of video output</title>
|
||||
|
||||
<para>For output devices targets and ioctls are used similarly to the video
|
||||
capture case. The <emphasis> composing </emphasis> rectangle refers to the
|
||||
insertion of an image into a video signal. The cropping rectangles refer to a
|
||||
memory buffer. It is recommended to configure the composing targets before to
|
||||
the cropping targets.</para>
|
||||
|
||||
<para>The cropping targets refer to the memory buffer that contains an image to
|
||||
be inserted into a video signal or graphical screen. The limits of cropping
|
||||
coordinates are obtained using <constant> V4L2_SEL_TGT_CROP_BOUNDS </constant>.
|
||||
All coordinates are expressed in pixels. The top/left corner is always point
|
||||
<constant> (0,0) </constant>. The width and height is equal to the image size
|
||||
specified using <constant> VIDIOC_S_FMT </constant> ioctl.</para>
|
||||
|
||||
<para>The top left corner, width and height of the source rectangle, that is
|
||||
the area from which image date are processed by the hardware, is given by the
|
||||
<constant> V4L2_SEL_TGT_CROP_ACTIVE </constant>. Its coordinates are expressed
|
||||
in in the same coordinate system as the bounds rectangle. The active cropping
|
||||
area must lie completely inside the crop boundaries and the driver may further
|
||||
adjust the requested size and/or position according to hardware
|
||||
limitations.</para>
|
||||
|
||||
<para>For output devices the default cropping rectangle is queried using
|
||||
<constant> V4L2_SEL_TGT_CROP_DEFAULT </constant>. It is usually equal to the
|
||||
bounding rectangle.</para>
|
||||
|
||||
<para>The part of a video signal or graphics display where the image is
|
||||
inserted by the hardware is controlled by <constant>
|
||||
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target. The rectangle's coordinates
|
||||
are expressed in pixels. The composing rectangle must lie completely inside the
|
||||
bounds rectangle. The driver must adjust the area to fit to the bounding
|
||||
limits. Moreover, the driver can perform other adjustments according to
|
||||
hardware limitations. </para>
|
||||
|
||||
<para>The device has a default composing rectangle, given by the <constant>
|
||||
V4L2_SEL_TGT_COMPOSE_DEFAULT </constant> target. This rectangle shall cover what
|
||||
the driver writer considers the complete picture. It is recommended for the
|
||||
driver developers to put the top/left corner at position <constant> (0,0)
|
||||
</constant>. Drivers shall set the active composing rectangle to the default
|
||||
one when the driver is first loaded.</para>
|
||||
|
||||
<para>The devices may introduce additional content to video signal other than
|
||||
an image from memory buffers. It includes borders around an image. However,
|
||||
such a padded area is driver-dependent feature not covered by this document.
|
||||
Driver developers are encouraged to keep padded rectangle equal to active one.
|
||||
The padded target is accessed by the <constant> V4L2_SEL_TGT_COMPOSE_PADDED
|
||||
</constant> identifier. It must contain all pixels from the <constant>
|
||||
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.</para>
|
||||
|
||||
</section>
|
||||
|
||||
<section>
|
||||
|
||||
<title>Scaling control.</title>
|
||||
|
||||
<para>An application can detect if scaling is performed by comparing the width
|
||||
and the height of rectangles obtained using <constant> V4L2_SEL_TGT_CROP_ACTIVE
|
||||
</constant> and <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> targets. If
|
||||
these are not equal then the scaling is applied. The application can compute
|
||||
the scaling ratios using these values.</para>
|
||||
|
||||
</section>
|
||||
|
||||
</section>
|
||||
|
||||
<section>
|
||||
|
||||
<title>Comparison with old cropping API.</title>
|
||||
|
||||
<para>The selection API was introduced to cope with deficiencies of previous
|
||||
<link linkend="crop"> API </link>, that was designed to control simple capture
|
||||
devices. Later the cropping API was adopted by video output drivers. The ioctls
|
||||
are used to select a part of the display were the video signal is inserted. It
|
||||
should be considered as an API abuse because the described operation is
|
||||
actually the composing. The selection API makes a clear distinction between
|
||||
composing and cropping operations by setting the appropriate targets. The V4L2
|
||||
API lacks any support for composing to and cropping from an image inside a
|
||||
memory buffer. The application could configure a capture device to fill only a
|
||||
part of an image by abusing V4L2 API. Cropping a smaller image from a larger
|
||||
one is achieved by setting the field <structfield>
|
||||
&v4l2-pix-format;::bytesperline </structfield>. Introducing an image offsets
|
||||
could be done by modifying field <structfield> &v4l2-buffer;::m:userptr
|
||||
</structfield> before calling <constant> VIDIOC_QBUF </constant>. Those
|
||||
operations should be avoided because they are not portable (endianness), and do
|
||||
not work for macroblock and Bayer formats and mmap buffers. The selection API
|
||||
deals with configuration of buffer cropping/composing in a clear, intuitive and
|
||||
portable way. Next, with the selection API the concepts of the padded target
|
||||
and constraints flags are introduced. Finally, <structname> &v4l2-crop;
|
||||
</structname> and <structname> &v4l2-cropcap; </structname> have no reserved
|
||||
fields. Therefore there is no way to extend their functionality. The new
|
||||
<structname> &v4l2-selection; </structname> provides a lot of place for future
|
||||
extensions. Driver developers are encouraged to implement only selection API.
|
||||
The former cropping API would be simulated using the new one. </para>
|
||||
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>Examples</title>
|
||||
<example>
|
||||
<title>Resetting the cropping parameters</title>
|
||||
|
||||
<para>(A video capture device is assumed; change <constant>
|
||||
V4L2_BUF_TYPE_VIDEO_CAPTURE </constant> for other devices; change target to
|
||||
<constant> V4L2_SEL_TGT_COMPOSE_* </constant> family to configure composing
|
||||
area)</para>
|
||||
|
||||
<programlisting>
|
||||
|
||||
&v4l2-selection; sel = {
|
||||
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
|
||||
.target = V4L2_SEL_TGT_CROP_DEFAULT,
|
||||
};
|
||||
ret = ioctl(fd, &VIDIOC-G-SELECTION;, &sel);
|
||||
if (ret)
|
||||
exit(-1);
|
||||
sel.target = V4L2_SEL_TGT_CROP_ACTIVE;
|
||||
ret = ioctl(fd, &VIDIOC-S-SELECTION;, &sel);
|
||||
if (ret)
|
||||
exit(-1);
|
||||
|
||||
</programlisting>
|
||||
</example>
|
||||
|
||||
<example>
|
||||
<title>Simple downscaling</title>
|
||||
<para>Setting a composing area on output of size of <emphasis> at most
|
||||
</emphasis> half of limit placed at a center of a display.</para>
|
||||
<programlisting>
|
||||
|
||||
&v4l2-selection; sel = {
|
||||
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
|
||||
.target = V4L2_SEL_TGT_COMPOSE_BOUNDS,
|
||||
};
|
||||
struct v4l2_rect r;
|
||||
|
||||
ret = ioctl(fd, &VIDIOC-G-SELECTION;, &sel);
|
||||
if (ret)
|
||||
exit(-1);
|
||||
/* setting smaller compose rectangle */
|
||||
r.width = sel.r.width / 2;
|
||||
r.height = sel.r.height / 2;
|
||||
r.left = sel.r.width / 4;
|
||||
r.top = sel.r.height / 4;
|
||||
sel.r = r;
|
||||
sel.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
|
||||
sel.flags = V4L2_SEL_FLAG_LE;
|
||||
ret = ioctl(fd, &VIDIOC-S-SELECTION;, &sel);
|
||||
if (ret)
|
||||
exit(-1);
|
||||
|
||||
</programlisting>
|
||||
</example>
|
||||
|
||||
<example>
|
||||
<title>Querying for scaling factors</title>
|
||||
<para>A video output device is assumed; change <constant>
|
||||
V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> for other devices</para>
|
||||
<programlisting>
|
||||
|
||||
&v4l2-selection; compose = {
|
||||
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
|
||||
.target = V4L2_SEL_TGT_COMPOSE_ACTIVE,
|
||||
};
|
||||
&v4l2-selection; crop = {
|
||||
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
|
||||
.target = V4L2_SEL_TGT_CROP_ACTIVE,
|
||||
};
|
||||
double hscale, vscale;
|
||||
|
||||
ret = ioctl(fd, &VIDIOC-G-SELECTION;, &compose);
|
||||
if (ret)
|
||||
exit(-1);
|
||||
ret = ioctl(fd, &VIDIOC-G-SELECTION;, &crop);
|
||||
if (ret)
|
||||
exit(-1);
|
||||
|
||||
/* computing scaling factors */
|
||||
hscale = (double)compose.r.width / crop.r.width;
|
||||
vscale = (double)compose.r.height / crop.r.height;
|
||||
|
||||
</programlisting>
|
||||
</example>
|
||||
|
||||
</section>
|
||||
|
||||
</section>
|
|
@ -501,6 +501,7 @@ and discussions on the V4L mailing list.</revremark>
|
|||
&sub-g-output;
|
||||
&sub-g-parm;
|
||||
&sub-g-priority;
|
||||
&sub-g-selection;
|
||||
&sub-g-sliced-vbi-cap;
|
||||
&sub-g-std;
|
||||
&sub-g-tuner;
|
||||
|
|
|
@ -228,11 +228,3 @@ is out of bounds.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -156,11 +156,3 @@ bounds.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -311,11 +311,3 @@ out of bounds.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -196,11 +196,3 @@ is out of bounds.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -381,11 +381,3 @@ is out of bounds.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -127,11 +127,3 @@ this control belongs to.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -183,7 +183,12 @@ applications must set the array to zero.</entry>
|
|||
<entry>__u32</entry>
|
||||
<entry><structfield>ctrl_class</structfield></entry>
|
||||
<entry>The control class to which all controls belong, see
|
||||
<xref linkend="ctrl-class" />.</entry>
|
||||
<xref linkend="ctrl-class" />. Drivers that use a kernel framework for handling
|
||||
controls will also accept a value of 0 here, meaning that the controls can
|
||||
belong to any control class. Whether drivers support this can be tested by setting
|
||||
<structfield>ctrl_class</structfield> to 0 and calling <constant>VIDIOC_TRY_EXT_CTRLS</constant>
|
||||
with a <structfield>count</structfield> of 0. If that succeeds, then the driver
|
||||
supports this feature.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
|
@ -194,10 +199,13 @@ also be zero.</entry>
|
|||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>error_idx</structfield></entry>
|
||||
<entry>Set by the driver in case of an error. It is the
|
||||
index of the control causing the error or equal to 'count' when the
|
||||
error is not associated with a particular control. Undefined when the
|
||||
ioctl returns 0 (success).</entry>
|
||||
<entry>Set by the driver in case of an error. If it is equal
|
||||
to <structfield>count</structfield>, then no actual changes were made to
|
||||
controls. In other words, the error was not associated with setting a particular
|
||||
control. If it is another value, then only the controls up to <structfield>error_idx-1</structfield>
|
||||
were modified and control <structfield>error_idx</structfield> is the one that
|
||||
caused the error. The <structfield>error_idx</structfield> value is undefined
|
||||
if the ioctl returned 0 (success).</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
|
@ -312,10 +320,3 @@ to store the payload and this error code is returned.</para>
|
|||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -295,7 +295,8 @@ set this field to zero.</entry>
|
|||
<entry>The device is capable of non-destructive overlays.
|
||||
When the driver clears this flag, only destructive overlays are
|
||||
supported. There are no drivers yet which support both destructive and
|
||||
non-destructive overlays.</entry>
|
||||
non-destructive overlays. Video Output Overlays are in practice always
|
||||
non-destructive.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
|
||||
|
@ -339,8 +340,8 @@ blending makes no sense for destructive overlays.</entry>
|
|||
<row>
|
||||
<entry><constant>V4L2_FBUF_CAP_SRC_CHROMAKEY</constant></entry>
|
||||
<entry>0x0080</entry>
|
||||
<entry>The device supports Source Chroma-keying. Framebuffer pixels
|
||||
with the chroma-key colors are replaced by video pixels, which is exactly opposite of
|
||||
<entry>The device supports Source Chroma-keying. Video pixels
|
||||
with the chroma-key colors are replaced by framebuffer pixels, which is exactly opposite of
|
||||
<constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
|
||||
</row>
|
||||
</tbody>
|
||||
|
@ -356,21 +357,27 @@ with the chroma-key colors are replaced by video pixels, which is exactly opposi
|
|||
<entry><constant>V4L2_FBUF_FLAG_PRIMARY</constant></entry>
|
||||
<entry>0x0001</entry>
|
||||
<entry>The framebuffer is the primary graphics surface.
|
||||
In other words, the overlay is destructive. [?]</entry>
|
||||
In other words, the overlay is destructive. This flag is typically set by any
|
||||
driver that doesn't have the <constant>V4L2_FBUF_CAP_EXTERNOVERLAY</constant>
|
||||
capability and it is cleared otherwise.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_FBUF_FLAG_OVERLAY</constant></entry>
|
||||
<entry>0x0002</entry>
|
||||
<entry>The frame buffer is an overlay surface the same
|
||||
size as the capture. [?]</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry spanname="hspan">The purpose of
|
||||
<constant>V4L2_FBUF_FLAG_PRIMARY</constant> and
|
||||
<constant>V4L2_FBUF_FLAG_OVERLAY</constant> was never quite clear.
|
||||
Most drivers seem to ignore these flags. For compatibility with the
|
||||
<wordasword>bttv</wordasword> driver applications should set the
|
||||
<constant>V4L2_FBUF_FLAG_OVERLAY</constant> flag.</entry>
|
||||
<entry>If this flag is set for a video capture device, then the
|
||||
driver will set the initial overlay size to cover the full framebuffer size,
|
||||
otherwise the existing overlay size (as set by &VIDIOC-S-FMT;) will be used.
|
||||
|
||||
Only one video capture driver (bttv) supports this flag. The use of this flag
|
||||
for capture devices is deprecated. There is no way to detect which drivers
|
||||
support this flag, so the only reliable method of setting the overlay size is
|
||||
through &VIDIOC-S-FMT;.
|
||||
|
||||
If this flag is set for a video output device, then the video output overlay
|
||||
window is relative to the top-left corner of the framebuffer and restricted
|
||||
to the size of the framebuffer. If it is cleared, then the video output
|
||||
overlay window is relative to the video output display.
|
||||
</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_FBUF_FLAG_CHROMAKEY</constant></entry>
|
||||
|
|
|
@ -98,8 +98,11 @@ the &v4l2-output; <structfield>modulator</structfield> field and the
|
|||
<entry>&v4l2-tuner-type;</entry>
|
||||
<entry><structfield>type</structfield></entry>
|
||||
<entry>The tuner type. This is the same value as in the
|
||||
&v4l2-tuner; <structfield>type</structfield> field. The field is not
|
||||
applicable to modulators, &ie; ignored by drivers.</entry>
|
||||
&v4l2-tuner; <structfield>type</structfield> field. The type must be set
|
||||
to <constant>V4L2_TUNER_RADIO</constant> for <filename>/dev/radioX</filename>
|
||||
device nodes, and to <constant>V4L2_TUNER_ANALOG_TV</constant>
|
||||
for all others. The field is not applicable to modulators, &ie; ignored
|
||||
by drivers.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
|
@ -135,11 +138,3 @@ wrong.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -61,8 +61,8 @@ desired input in an integer and call the
|
|||
<constant>VIDIOC_S_INPUT</constant> ioctl with a pointer to this
|
||||
integer. Side effects are possible. For example inputs may support
|
||||
different video standards, so the driver may implicitly switch the
|
||||
current standard. It is good practice to select an input before
|
||||
querying or negotiating any other parameters.</para>
|
||||
current standard. Because of these possible side effects applications
|
||||
must select an input before querying or negotiating any other parameters.</para>
|
||||
|
||||
<para>Information about video inputs is available using the
|
||||
&VIDIOC-ENUMINPUT; ioctl.</para>
|
||||
|
|
|
@ -236,11 +236,3 @@ mode.</entry>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -61,8 +61,9 @@ desired output in an integer and call the
|
|||
<constant>VIDIOC_S_OUTPUT</constant> ioctl with a pointer to this integer.
|
||||
Side effects are possible. For example outputs may support different
|
||||
video standards, so the driver may implicitly switch the current
|
||||
standard. It is good practice to select an output before querying or
|
||||
negotiating any other parameters.</para>
|
||||
standard.
|
||||
standard. Because of these possible side effects applications
|
||||
must select an output before querying or negotiating any other parameters.</para>
|
||||
|
||||
<para>Information about video outputs is available using the
|
||||
&VIDIOC-ENUMOUTPUT; ioctl.</para>
|
||||
|
|
|
@ -133,11 +133,3 @@ priority.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -0,0 +1,304 @@
|
|||
<refentry id="vidioc-g-selection">
|
||||
|
||||
<refmeta>
|
||||
<refentrytitle>ioctl VIDIOC_G_SELECTION, VIDIOC_S_SELECTION</refentrytitle>
|
||||
&manvol;
|
||||
</refmeta>
|
||||
|
||||
<refnamediv>
|
||||
<refname>VIDIOC_G_SELECTION</refname>
|
||||
<refname>VIDIOC_S_SELECTION</refname>
|
||||
<refpurpose>Get or set one of the selection rectangles</refpurpose>
|
||||
</refnamediv>
|
||||
|
||||
<refsynopsisdiv>
|
||||
<funcsynopsis>
|
||||
<funcprototype>
|
||||
<funcdef>int <function>ioctl</function></funcdef>
|
||||
<paramdef>int <parameter>fd</parameter></paramdef>
|
||||
<paramdef>int <parameter>request</parameter></paramdef>
|
||||
<paramdef>struct v4l2_selection *<parameter>argp</parameter></paramdef>
|
||||
</funcprototype>
|
||||
</funcsynopsis>
|
||||
</refsynopsisdiv>
|
||||
|
||||
<refsect1>
|
||||
<title>Arguments</title>
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term><parameter>fd</parameter></term>
|
||||
<listitem>
|
||||
<para>&fd;</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><parameter>request</parameter></term>
|
||||
<listitem>
|
||||
<para>VIDIOC_G_SELECTION, VIDIOC_S_SELECTION</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><parameter>argp</parameter></term>
|
||||
<listitem>
|
||||
<para></para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
|
||||
<note>
|
||||
<title>Experimental</title>
|
||||
<para>This is an <link linkend="experimental"> experimental </link>
|
||||
interface and may change in the future.</para>
|
||||
</note>
|
||||
|
||||
<para>The ioctls are used to query and configure selection rectangles.</para>
|
||||
|
||||
<para> To query the cropping (composing) rectangle set <structfield>
|
||||
&v4l2-selection;::type </structfield> to the respective buffer type. Do not
|
||||
use multiplanar buffers. Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
|
||||
</constant> instead of <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
|
||||
</constant>. Use <constant> V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> instead of
|
||||
<constant> V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE </constant>. The next step is
|
||||
setting <structfield> &v4l2-selection;::target </structfield> to value
|
||||
<constant> V4L2_SEL_TGT_CROP_ACTIVE </constant> (<constant>
|
||||
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant>). Please refer to table <xref
|
||||
linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
|
||||
targets. Fields <structfield> &v4l2-selection;::flags </structfield> and
|
||||
<structfield> &v4l2-selection;::reserved </structfield> are ignored and they
|
||||
must be filled with zeros. The driver fills the rest of the structure or
|
||||
returns &EINVAL; if incorrect buffer type or target was used. If cropping
|
||||
(composing) is not supported then the active rectangle is not mutable and it is
|
||||
always equal to the bounds rectangle. Finally, structure <structfield>
|
||||
&v4l2-selection;::r </structfield> is filled with the current cropping
|
||||
(composing) coordinates. The coordinates are expressed in driver-dependent
|
||||
units. The only exception are rectangles for images in raw formats, whose
|
||||
coordinates are always expressed in pixels. </para>
|
||||
|
||||
<para> To change the cropping (composing) rectangle set <structfield>
|
||||
&v4l2-selection;::type </structfield> to the respective buffer type. Do not
|
||||
use multiplanar buffers. Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
|
||||
</constant> instead of <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
|
||||
</constant>. Use <constant> V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> instead of
|
||||
<constant> V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE </constant>. The next step is
|
||||
setting <structfield> &v4l2-selection;::target </structfield> to value
|
||||
<constant> V4L2_SEL_TGT_CROP_ACTIVE </constant> (<constant>
|
||||
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant>). Please refer to table <xref
|
||||
linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
|
||||
targets. Set desired active area into the field <structfield>
|
||||
&v4l2-selection;::r </structfield>. Field <structfield>
|
||||
&v4l2-selection;::reserved </structfield> is ignored and must be filled with
|
||||
zeros. The driver may adjust the rectangle coordinates. An application may
|
||||
introduce constraints to control rounding behaviour. Set the field
|
||||
<structfield> &v4l2-selection;::flags </structfield> to one of values:
|
||||
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para><constant>0</constant> - The driver can adjust the rectangle size freely
|
||||
and shall choose a crop/compose rectangle as close as possible to the requested
|
||||
one.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para><constant>V4L2_SEL_FLAG_GE</constant> - The driver is not allowed to
|
||||
shrink the rectangle. The original rectangle must lay inside the adjusted
|
||||
one.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para><constant>V4L2_SEL_FLAG_LE</constant> - The driver is not allowed to
|
||||
enlarge the rectangle. The adjusted rectangle must lay inside the original
|
||||
one.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para><constant>V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE</constant> - The driver
|
||||
must choose the size exactly the same as in the requested rectangle.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
|
||||
Please refer to <xref linkend="sel-const-adjust" />.
|
||||
|
||||
</para>
|
||||
|
||||
<para> The driver may have to adjusts the requested dimensions against hardware
|
||||
limits and other parts as the pipeline, i.e. the bounds given by the
|
||||
capture/output window or TV display. The closest possible values of horizontal
|
||||
and vertical offset and sizes are chosen according to following priority:
|
||||
|
||||
<orderedlist>
|
||||
<listitem>
|
||||
<para>Satisfy constraints from <structfield>&v4l2-selection;::flags</structfield>.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Adjust width, height, left, and top to hardware limits and alignments.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Keep center of adjusted rectangle as close as possible to the original one.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Keep width and height as close as possible to original ones.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Keep horizontal and vertical offset as close as possible to original ones.</para>
|
||||
</listitem>
|
||||
</orderedlist>
|
||||
|
||||
On success the field <structfield> &v4l2-selection;::r </structfield> contains
|
||||
the adjusted rectangle. When the parameters are unsuitable the application may
|
||||
modify the cropping (composing) or image parameters and repeat the cycle until
|
||||
satisfactory parameters have been negotiated. If constraints flags have to be
|
||||
violated at then ERANGE is returned. The error indicates that <emphasis> there
|
||||
exist no rectangle </emphasis> that satisfies the constraints.</para>
|
||||
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
<table frame="none" pgwide="1" id="v4l2-sel-target">
|
||||
<title>Selection targets.</title>
|
||||
<tgroup cols="3">
|
||||
&cs-def;
|
||||
<tbody valign="top">
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_TGT_CROP_ACTIVE</constant></entry>
|
||||
<entry>0</entry>
|
||||
<entry>area that is currently cropped by hardware</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_TGT_CROP_DEFAULT</constant></entry>
|
||||
<entry>1</entry>
|
||||
<entry>suggested cropping rectangle that covers the "whole picture"</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_TGT_CROP_BOUNDS</constant></entry>
|
||||
<entry>2</entry>
|
||||
<entry>limits for the cropping rectangle</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_TGT_COMPOSE_ACTIVE</constant></entry>
|
||||
<entry>256</entry>
|
||||
<entry>area to which data are composed by hardware</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_TGT_COMPOSE_DEFAULT</constant></entry>
|
||||
<entry>257</entry>
|
||||
<entry>suggested composing rectangle that covers the "whole picture"</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
|
||||
<entry>258</entry>
|
||||
<entry>limits for the composing rectangle</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_TGT_COMPOSE_PADDED</constant></entry>
|
||||
<entry>259</entry>
|
||||
<entry>the active area and all padding pixels that are inserted or modified by the hardware</entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</tgroup>
|
||||
</table>
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
<table frame="none" pgwide="1" id="v4l2-sel-flags">
|
||||
<title>Selection constraint flags</title>
|
||||
<tgroup cols="3">
|
||||
&cs-def;
|
||||
<tbody valign="top">
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_FLAG_GE</constant></entry>
|
||||
<entry>0x00000001</entry>
|
||||
<entry>indicate that adjusted rectangle must contain a rectangle from <structfield>&v4l2-selection;::r</structfield></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_SEL_FLAG_LE</constant></entry>
|
||||
<entry>0x00000002</entry>
|
||||
<entry>indicate that adjusted rectangle must be inside a rectangle from <structfield>&v4l2-selection;::r</structfield></entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</tgroup>
|
||||
</table>
|
||||
</refsect1>
|
||||
|
||||
<section>
|
||||
<figure id="sel-const-adjust">
|
||||
<title>Size adjustments with constraint flags.</title>
|
||||
<mediaobject>
|
||||
<imageobject>
|
||||
<imagedata fileref="constraints.png" format="PNG" />
|
||||
</imageobject>
|
||||
<textobject>
|
||||
<phrase>Behaviour of rectangle adjustment for different constraint
|
||||
flags.</phrase>
|
||||
</textobject>
|
||||
</mediaobject>
|
||||
</figure>
|
||||
</section>
|
||||
|
||||
<refsect1>
|
||||
<table pgwide="1" frame="none" id="v4l2-selection">
|
||||
<title>struct <structname>v4l2_selection</structname></title>
|
||||
<tgroup cols="3">
|
||||
&cs-str;
|
||||
<tbody valign="top">
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>type</structfield></entry>
|
||||
<entry>Type of the buffer (from &v4l2-buf-type;)</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>target</structfield></entry>
|
||||
<entry>used to select between <link linkend="v4l2-sel-target"> cropping and composing rectangles </link></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>flags</structfield></entry>
|
||||
<entry>control over coordinates adjustments, refer to <link linkend="v4l2-sel-flags">selection flags</link></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-rect;</entry>
|
||||
<entry><structfield>r</structfield></entry>
|
||||
<entry>selection rectangle</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>reserved[9]</structfield></entry>
|
||||
<entry>Reserved fields for future use</entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</tgroup>
|
||||
</table>
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
&return-value;
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term><errorcode>EINVAL</errorcode></term>
|
||||
<listitem>
|
||||
<para>The buffer <structfield> &v4l2-selection;::type </structfield>
|
||||
or <structfield> &v4l2-selection;::target </structfield> is not supported, or
|
||||
the <structfield> &v4l2-selection;::flags </structfield> are invalid.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><errorcode>ERANGE</errorcode></term>
|
||||
<listitem>
|
||||
<para>it is not possible to adjust a rectangle <structfield>
|
||||
&v4l2-selection;::r </structfield> that satisfies all contraints from
|
||||
<structfield> &v4l2-selection;::flags </structfield>.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><errorcode>EBUSY</errorcode></term>
|
||||
<listitem>
|
||||
<para>it is not possible to apply change of selection rectangle at the moment.
|
||||
Usually because streaming is in progress.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</refsect1>
|
||||
|
||||
</refentry>
|
|
@ -88,11 +88,3 @@ standards.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -318,6 +318,16 @@ standard.</para><!-- FIXME what if PAL+NTSC and Bi but not SAP? --></entry>
|
|||
<entry>RDS capture is supported. This capability is only valid for
|
||||
radio tuners.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_TUNER_CAP_RDS_BLOCK_IO</constant></entry>
|
||||
<entry>0x0100</entry>
|
||||
<entry>The RDS data is passed as unparsed RDS blocks.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><constant>V4L2_TUNER_CAP_RDS_CONTROLS</constant></entry>
|
||||
<entry>0x0200</entry>
|
||||
<entry>The RDS data is parsed by the hardware and set via controls.</entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</tgroup>
|
||||
</table>
|
||||
|
@ -525,11 +535,3 @@ out of bounds.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -100,11 +100,3 @@ supported, or the <structfield>index</structfield> is out of bounds.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -443,11 +443,3 @@ or this particular menu item is not supported by the driver.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -125,11 +125,3 @@ wrong.</para>
|
|||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
Local Variables:
|
||||
mode: sgml
|
||||
sgml-parent-document: "v4l2.sgml"
|
||||
indent-tabs-mode: nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -47,20 +47,53 @@ directory apei/einj. The following files are provided.
|
|||
|
||||
- param1
|
||||
This file is used to set the first error parameter value. Effect of
|
||||
parameter depends on error_type specified. For memory error, this is
|
||||
physical memory address. Only available if param_extension module
|
||||
parameter is specified.
|
||||
parameter depends on error_type specified.
|
||||
|
||||
- param2
|
||||
This file is used to set the second error parameter value. Effect of
|
||||
parameter depends on error_type specified. For memory error, this is
|
||||
physical memory address mask. Only available if param_extension
|
||||
module parameter is specified.
|
||||
parameter depends on error_type specified.
|
||||
|
||||
BIOS versions based in the ACPI 4.0 specification have limited options
|
||||
to control where the errors are injected. Your BIOS may support an
|
||||
extension (enabled with the param_extension=1 module parameter, or
|
||||
boot command line einj.param_extension=1). This allows the address
|
||||
and mask for memory injections to be specified by the param1 and
|
||||
param2 files in apei/einj.
|
||||
|
||||
BIOS versions using the ACPI 5.0 specification have more control over
|
||||
the target of the injection. For processor related errors (type 0x1,
|
||||
0x2 and 0x4) the APICID of the target should be provided using the
|
||||
param1 file in apei/einj. For memory errors (type 0x8, 0x10 and 0x20)
|
||||
the address is set using param1 with a mask in param2 (0x0 is equivalent
|
||||
to all ones). For PCI express errors (type 0x40, 0x80 and 0x100) the
|
||||
segment, bus, device and function are specified using param1:
|
||||
|
||||
31 24 23 16 15 11 10 8 7 0
|
||||
+-------------------------------------------------+
|
||||
| segment | bus | device | function | reserved |
|
||||
+-------------------------------------------------+
|
||||
|
||||
An ACPI 5.0 BIOS may also allow vendor specific errors to be injected.
|
||||
In this case a file named vendor will contain identifying information
|
||||
from the BIOS that hopefully will allow an application wishing to use
|
||||
the vendor specific extension to tell that they are running on a BIOS
|
||||
that supports it. All vendor extensions have the 0x80000000 bit set in
|
||||
error_type. A file vendor_flags controls the interpretation of param1
|
||||
and param2 (1 = PROCESSOR, 2 = MEMORY, 4 = PCI). See your BIOS vendor
|
||||
documentation for details (and expect changes to this API if vendors
|
||||
creativity in using this feature expands beyond our expectations).
|
||||
|
||||
Example:
|
||||
# cd /sys/kernel/debug/apei/einj
|
||||
# cat available_error_type # See which errors can be injected
|
||||
0x00000002 Processor Uncorrectable non-fatal
|
||||
0x00000008 Memory Correctable
|
||||
0x00000010 Memory Uncorrectable non-fatal
|
||||
# echo 0x12345000 > param1 # Set memory address for injection
|
||||
# echo 0xfffffffffffff000 > param2 # Mask - anywhere in this page
|
||||
# echo 0x8 > error_type # Choose correctable memory error
|
||||
# echo 1 > error_inject # Inject now
|
||||
|
||||
Injecting parameter support is a BIOS version specific extension, that
|
||||
is, it only works on some BIOS version. If you want to use it, please
|
||||
make sure your BIOS version has the proper support and specify
|
||||
"param_extension=y" in module parameter.
|
||||
|
||||
For more information about EINJ, please refer to ACPI specification
|
||||
version 4.0, section 17.5.
|
||||
version 4.0, section 17.5 and ACPI 5.0, section 18.6.
|
||||
|
|
|
@ -102,9 +102,15 @@ or
|
|||
make coccicheck COCCI=<my_SP.cocci> MODE=report
|
||||
|
||||
|
||||
Using Coccinelle on (modified) files
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Controlling Which Files are Processed by Coccinelle
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
By default the entire kernel source tree is checked.
|
||||
|
||||
To apply Coccinelle to a specific directory, M= can be used.
|
||||
For example, to check drivers/net/wireless/ one may write:
|
||||
|
||||
make coccicheck M=drivers/net/wireless/
|
||||
|
||||
To apply Coccinelle on a file basis, instead of a directory basis, the
|
||||
following command may be used:
|
||||
|
||||
|
|
|
@ -0,0 +1,14 @@
|
|||
* Atmel Direct Memory Access Controller (DMA)
|
||||
|
||||
Required properties:
|
||||
- compatible: Should be "atmel,<chip>-dma"
|
||||
- reg: Should contain DMA registers location and length
|
||||
- interrupts: Should contain DMA interrupt
|
||||
|
||||
Examples:
|
||||
|
||||
dma@ffffec00 {
|
||||
compatible = "atmel,at91sam9g45-dma";
|
||||
reg = <0xffffec00 0x200>;
|
||||
interrupts = <21>;
|
||||
};
|
|
@ -0,0 +1,30 @@
|
|||
I2C for OMAP platforms
|
||||
|
||||
Required properties :
|
||||
- compatible : Must be "ti,omap3-i2c" or "ti,omap4-i2c"
|
||||
- ti,hwmods : Must be "i2c<n>", n being the instance number (1-based)
|
||||
- #address-cells = <1>;
|
||||
- #size-cells = <0>;
|
||||
|
||||
Recommended properties :
|
||||
- clock-frequency : Desired I2C bus clock frequency in Hz. Otherwise
|
||||
the default 100 kHz frequency will be used.
|
||||
|
||||
Optional properties:
|
||||
- Child nodes conforming to i2c bus binding
|
||||
|
||||
Note: Current implementation will fetch base address, irq and dma
|
||||
from omap hwmod data base during device registration.
|
||||
Future plan is to migrate hwmod data base contents into device tree
|
||||
blob so that, all the required data will be used from device tree dts
|
||||
file.
|
||||
|
||||
Examples :
|
||||
|
||||
i2c1: i2c@0 {
|
||||
compatible = "ti,omap3-i2c";
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
ti,hwmods = "i2c1";
|
||||
clock-frequency = <400000>;
|
||||
};
|
|
@ -0,0 +1,78 @@
|
|||
* Freescale MC13783/MC13892 Power Management Integrated Circuit (PMIC)
|
||||
|
||||
Required properties:
|
||||
- compatible : Should be "fsl,mc13783" or "fsl,mc13892"
|
||||
|
||||
Optional properties:
|
||||
- fsl,mc13xxx-uses-adc : Indicate the ADC is being used
|
||||
- fsl,mc13xxx-uses-codec : Indicate the Audio Codec is being used
|
||||
- fsl,mc13xxx-uses-rtc : Indicate the RTC is being used
|
||||
- fsl,mc13xxx-uses-touch : Indicate the touchscreen controller is being used
|
||||
|
||||
Sub-nodes:
|
||||
- regulators : Contain the regulator nodes. The MC13892 regulators are
|
||||
bound using their names as listed below with their registers and bits
|
||||
for enabling.
|
||||
|
||||
vcoincell : regulator VCOINCELL (register 13, bit 23)
|
||||
sw1 : regulator SW1 (register 24, bit 0)
|
||||
sw2 : regulator SW2 (register 25, bit 0)
|
||||
sw3 : regulator SW3 (register 26, bit 0)
|
||||
sw4 : regulator SW4 (register 27, bit 0)
|
||||
swbst : regulator SWBST (register 29, bit 20)
|
||||
vgen1 : regulator VGEN1 (register 32, bit 0)
|
||||
viohi : regulator VIOHI (register 32, bit 3)
|
||||
vdig : regulator VDIG (register 32, bit 9)
|
||||
vgen2 : regulator VGEN2 (register 32, bit 12)
|
||||
vpll : regulator VPLL (register 32, bit 15)
|
||||
vusb2 : regulator VUSB2 (register 32, bit 18)
|
||||
vgen3 : regulator VGEN3 (register 33, bit 0)
|
||||
vcam : regulator VCAM (register 33, bit 6)
|
||||
vvideo : regulator VVIDEO (register 33, bit 12)
|
||||
vaudio : regulator VAUDIO (register 33, bit 15)
|
||||
vsd : regulator VSD (register 33, bit 18)
|
||||
gpo1 : regulator GPO1 (register 34, bit 6)
|
||||
gpo2 : regulator GPO2 (register 34, bit 8)
|
||||
gpo3 : regulator GPO3 (register 34, bit 10)
|
||||
gpo4 : regulator GPO4 (register 34, bit 12)
|
||||
pwgt1spi : regulator PWGT1SPI (register 34, bit 15)
|
||||
pwgt2spi : regulator PWGT2SPI (register 34, bit 16)
|
||||
vusb : regulator VUSB (register 50, bit 3)
|
||||
|
||||
The bindings details of individual regulator device can be found in:
|
||||
Documentation/devicetree/bindings/regulator/regulator.txt
|
||||
|
||||
Examples:
|
||||
|
||||
ecspi@70010000 { /* ECSPI1 */
|
||||
fsl,spi-num-chipselects = <2>;
|
||||
cs-gpios = <&gpio3 24 0>, /* GPIO4_24 */
|
||||
<&gpio3 25 0>; /* GPIO4_25 */
|
||||
status = "okay";
|
||||
|
||||
pmic: mc13892@0 {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
compatible = "fsl,mc13892";
|
||||
spi-max-frequency = <6000000>;
|
||||
reg = <0>;
|
||||
interrupt-parent = <&gpio0>;
|
||||
interrupts = <8>;
|
||||
|
||||
regulators {
|
||||
sw1_reg: mc13892__sw1 {
|
||||
regulator-min-microvolt = <600000>;
|
||||
regulator-max-microvolt = <1375000>;
|
||||
regulator-boot-on;
|
||||
regulator-always-on;
|
||||
};
|
||||
|
||||
sw2_reg: mc13892__sw2 {
|
||||
regulator-min-microvolt = <900000>;
|
||||
regulator-max-microvolt = <1850000>;
|
||||
regulator-boot-on;
|
||||
regulator-always-on;
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
|
@ -0,0 +1,47 @@
|
|||
Texas Instruments TWL family
|
||||
|
||||
The TWLs are Integrated Power Management Chips.
|
||||
Some version might contain much more analog function like
|
||||
USB transceiver or Audio amplifier.
|
||||
These chips are connected to an i2c bus.
|
||||
|
||||
|
||||
Required properties:
|
||||
- compatible : Must be "ti,twl4030";
|
||||
For Integrated power-management/audio CODEC device used in OMAP3
|
||||
based boards
|
||||
- compatible : Must be "ti,twl6030";
|
||||
For Integrated power-management used in OMAP4 based boards
|
||||
- interrupts : This i2c device has an IRQ line connected to the main SoC
|
||||
- interrupt-controller : Since the twl support several interrupts internally,
|
||||
it is considered as an interrupt controller cascaded to the SoC one.
|
||||
- #interrupt-cells = <1>;
|
||||
- interrupt-parent : The parent interrupt controller.
|
||||
|
||||
Optional node:
|
||||
- Child nodes contain in the twl. The twl family is made of several variants
|
||||
that support a different number of features.
|
||||
The children nodes will thus depend of the capability of the variant.
|
||||
|
||||
|
||||
Example:
|
||||
/*
|
||||
* Integrated Power Management Chip
|
||||
* http://www.ti.com/lit/ds/symlink/twl6030.pdf
|
||||
*/
|
||||
twl@48 {
|
||||
compatible = "ti,twl6030";
|
||||
reg = <0x48>;
|
||||
interrupts = <39>; /* IRQ_SYS_1N cascaded to gic */
|
||||
interrupt-controller;
|
||||
#interrupt-cells = <1>;
|
||||
interrupt-parent = <&gic>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
twl_rtc {
|
||||
compatible = "ti,twl_rtc";
|
||||
interrupts = <11>;
|
||||
reg = <0>;
|
||||
};
|
||||
};
|
|
@ -0,0 +1,54 @@
|
|||
Some properties contain an ordered list of 1 or more datum which are
|
||||
normally accessed by index. However, some devices will have multiple
|
||||
values which are more naturally accessed by name. Device nodes can
|
||||
include a supplemental property for assigning names to each of the list
|
||||
items. The names property consists of a list of strings in the same
|
||||
order as the data in the resource property.
|
||||
|
||||
The following supplemental names properties are defined.
|
||||
|
||||
Resource Property Supplemental Names Property
|
||||
----------------- ---------------------------
|
||||
reg reg-names
|
||||
clocks clock-names
|
||||
interrupts interrupt-names
|
||||
|
||||
Usage:
|
||||
|
||||
The -names property must be used in conjunction with the normal resource
|
||||
property. If not it will be ignored.
|
||||
|
||||
Examples:
|
||||
|
||||
l4-abe {
|
||||
compatible = "simple-bus";
|
||||
#address-cells = <2>;
|
||||
#size-cells = <1>;
|
||||
ranges = <0 0 0x48000000 0x00001000>, /* MPU path */
|
||||
<1 0 0x49000000 0x00001000>; /* L3 path */
|
||||
mcasp {
|
||||
compatible = "ti,mcasp";
|
||||
reg = <0 0x10 0x10>, <0 0x20 0x10>,
|
||||
<1 0x10 0x10>, <1 0x20 0x10>;
|
||||
reg-names = "mpu", "dat",
|
||||
"dma", "dma_dat";
|
||||
interrupts = <11>, <12>;
|
||||
interrupt-names = "rx", "tx";
|
||||
};
|
||||
|
||||
timer {
|
||||
compatible = "ti,timer";
|
||||
reg = <0 0x40 0x10>, <1 0x40 0x10>;
|
||||
reg-names = "mpu", "dma";
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
usb {
|
||||
compatible = "ti,usb-host";
|
||||
reg = <0x4a064000 0x800>, <0x4a064800 0x200>,
|
||||
<0x4a064c00 0x200>;
|
||||
reg-names = "config", "ohci", "ehci";
|
||||
interrupts = <14>, <15>;
|
||||
interrupt-names = "ohci", "ehci";
|
||||
};
|
|
@ -219,6 +219,10 @@ NOTES:
|
|||
If the exporter chooses not to allow an attach() operation once a
|
||||
map_dma_buf() API has been called, it simply returns an error.
|
||||
|
||||
Miscellaneous notes:
|
||||
- Any exporters or users of the dma-buf buffer sharing framework must have
|
||||
a 'select DMA_SHARED_BUFFER' in their respective Kconfigs.
|
||||
|
||||
References:
|
||||
[1] struct dma_buf_ops in include/linux/dma-buf.h
|
||||
[2] All interfaces mentioned above defined in include/linux/dma-buf.h
|
||||
|
|
|
@ -75,6 +75,10 @@ The slave DMA usage consists of following steps:
|
|||
slave_sg - DMA a list of scatter gather buffers from/to a peripheral
|
||||
dma_cyclic - Perform a cyclic DMA operation from/to a peripheral till the
|
||||
operation is explicitly stopped.
|
||||
interleaved_dma - This is common to Slave as well as M2M clients. For slave
|
||||
address of devices' fifo could be already known to the driver.
|
||||
Various types of operations could be expressed by setting
|
||||
appropriate values to the 'dma_interleaved_template' members.
|
||||
|
||||
A non-NULL return of this transfer API represents a "descriptor" for
|
||||
the given transaction.
|
||||
|
@ -89,6 +93,10 @@ The slave DMA usage consists of following steps:
|
|||
struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
|
||||
size_t period_len, enum dma_data_direction direction);
|
||||
|
||||
struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
|
||||
struct dma_chan *chan, struct dma_interleaved_template *xt,
|
||||
unsigned long flags);
|
||||
|
||||
The peripheral driver is expected to have mapped the scatterlist for
|
||||
the DMA operation prior to calling device_prep_slave_sg, and must
|
||||
keep the scatterlist mapped until the DMA operation has completed.
|
||||
|
|
|
@ -27,8 +27,8 @@ use IO::Handle;
|
|||
"or51211", "or51132_qam", "or51132_vsb", "bluebird",
|
||||
"opera1", "cx231xx", "cx18", "cx23885", "pvrusb2", "mpc718",
|
||||
"af9015", "ngene", "az6027", "lme2510_lg", "lme2510c_s7395",
|
||||
"lme2510c_s7395_old", "drxk", "drxk_terratec_h5", "tda10071",
|
||||
"it9135" );
|
||||
"lme2510c_s7395_old", "drxk", "drxk_terratec_h5",
|
||||
"drxk_hauppauge_hvr930c", "tda10071", "it9135", "it9137");
|
||||
|
||||
# Check args
|
||||
syntax() if (scalar(@ARGV) != 1);
|
||||
|
@ -644,6 +644,24 @@ sub drxk {
|
|||
"$fwfile"
|
||||
}
|
||||
|
||||
sub drxk_hauppauge_hvr930c {
|
||||
my $url = "http://www.wintvcd.co.uk/drivers/";
|
||||
my $zipfile = "HVR-9x0_5_10_325_28153_SIGNED.zip";
|
||||
my $hash = "83ab82e7e9480ec8bf1ae0155ca63c88";
|
||||
my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
|
||||
my $drvfile = "HVR-900/emOEM.sys";
|
||||
my $fwfile = "dvb-usb-hauppauge-hvr930c-drxk.fw";
|
||||
|
||||
checkstandard();
|
||||
|
||||
wgetfile($zipfile, $url . $zipfile);
|
||||
verify($zipfile, $hash);
|
||||
unzip($zipfile, $tmpdir);
|
||||
extract("$tmpdir/$drvfile", 0x117b0, 42692, "$fwfile");
|
||||
|
||||
"$fwfile"
|
||||
}
|
||||
|
||||
sub drxk_terratec_h5 {
|
||||
my $url = "http://www.linuxtv.org/downloads/firmware/";
|
||||
my $hash = "19000dada8e2741162ccc50cc91fa7f1";
|
||||
|
@ -658,6 +676,26 @@ sub drxk_terratec_h5 {
|
|||
}
|
||||
|
||||
sub it9135 {
|
||||
my $sourcefile = "dvb-usb-it9135.zip";
|
||||
my $url = "http://www.ite.com.tw/uploads/firmware/v3.6.0.0/$sourcefile";
|
||||
my $hash = "1e55f6c8833f1d0ae067c2bb2953e6a9";
|
||||
my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 0);
|
||||
my $outfile = "dvb-usb-it9135.fw";
|
||||
my $fwfile1 = "dvb-usb-it9135-01.fw";
|
||||
my $fwfile2 = "dvb-usb-it9135-02.fw";
|
||||
|
||||
checkstandard();
|
||||
|
||||
wgetfile($sourcefile, $url);
|
||||
unzip($sourcefile, $tmpdir);
|
||||
verify("$tmpdir/$outfile", $hash);
|
||||
extract("$tmpdir/$outfile", 64, 8128, "$fwfile1");
|
||||
extract("$tmpdir/$outfile", 12866, 5817, "$fwfile2");
|
||||
|
||||
"$fwfile1 $fwfile2"
|
||||
}
|
||||
|
||||
sub it9137 {
|
||||
my $url = "http://kworld.server261.com/kworld/CD/ITE_TiVme/V1.00/";
|
||||
my $zipfile = "Driver_V10.323.1.0412.100412.zip";
|
||||
my $hash = "79b597dc648698ed6820845c0c9d0d37";
|
||||
|
|
|
@ -0,0 +1,306 @@
|
|||
The Frame Buffer Device API
|
||||
---------------------------
|
||||
|
||||
Last revised: June 21, 2011
|
||||
|
||||
|
||||
0. Introduction
|
||||
---------------
|
||||
|
||||
This document describes the frame buffer API used by applications to interact
|
||||
with frame buffer devices. In-kernel APIs between device drivers and the frame
|
||||
buffer core are not described.
|
||||
|
||||
Due to a lack of documentation in the original frame buffer API, drivers
|
||||
behaviours differ in subtle (and not so subtle) ways. This document describes
|
||||
the recommended API implementation, but applications should be prepared to
|
||||
deal with different behaviours.
|
||||
|
||||
|
||||
1. Capabilities
|
||||
---------------
|
||||
|
||||
Device and driver capabilities are reported in the fixed screen information
|
||||
capabilities field.
|
||||
|
||||
struct fb_fix_screeninfo {
|
||||
...
|
||||
__u16 capabilities; /* see FB_CAP_* */
|
||||
...
|
||||
};
|
||||
|
||||
Application should use those capabilities to find out what features they can
|
||||
expect from the device and driver.
|
||||
|
||||
- FB_CAP_FOURCC
|
||||
|
||||
The driver supports the four character code (FOURCC) based format setting API.
|
||||
When supported, formats are configured using a FOURCC instead of manually
|
||||
specifying color components layout.
|
||||
|
||||
|
||||
2. Types and visuals
|
||||
--------------------
|
||||
|
||||
Pixels are stored in memory in hardware-dependent formats. Applications need
|
||||
to be aware of the pixel storage format in order to write image data to the
|
||||
frame buffer memory in the format expected by the hardware.
|
||||
|
||||
Formats are described by frame buffer types and visuals. Some visuals require
|
||||
additional information, which are stored in the variable screen information
|
||||
bits_per_pixel, grayscale, red, green, blue and transp fields.
|
||||
|
||||
Visuals describe how color information is encoded and assembled to create
|
||||
macropixels. Types describe how macropixels are stored in memory. The following
|
||||
types and visuals are supported.
|
||||
|
||||
- FB_TYPE_PACKED_PIXELS
|
||||
|
||||
Macropixels are stored contiguously in a single plane. If the number of bits
|
||||
per macropixel is not a multiple of 8, whether macropixels are padded to the
|
||||
next multiple of 8 bits or packed together into bytes depends on the visual.
|
||||
|
||||
Padding at end of lines may be present and is then reported through the fixed
|
||||
screen information line_length field.
|
||||
|
||||
- FB_TYPE_PLANES
|
||||
|
||||
Macropixels are split across multiple planes. The number of planes is equal to
|
||||
the number of bits per macropixel, with plane i'th storing i'th bit from all
|
||||
macropixels.
|
||||
|
||||
Planes are located contiguously in memory.
|
||||
|
||||
- FB_TYPE_INTERLEAVED_PLANES
|
||||
|
||||
Macropixels are split across multiple planes. The number of planes is equal to
|
||||
the number of bits per macropixel, with plane i'th storing i'th bit from all
|
||||
macropixels.
|
||||
|
||||
Planes are interleaved in memory. The interleave factor, defined as the
|
||||
distance in bytes between the beginning of two consecutive interleaved blocks
|
||||
belonging to different planes, is stored in the fixed screen information
|
||||
type_aux field.
|
||||
|
||||
- FB_TYPE_FOURCC
|
||||
|
||||
Macropixels are stored in memory as described by the format FOURCC identifier
|
||||
stored in the variable screen information grayscale field.
|
||||
|
||||
- FB_VISUAL_MONO01
|
||||
|
||||
Pixels are black or white and stored on a number of bits (typically one)
|
||||
specified by the variable screen information bpp field.
|
||||
|
||||
Black pixels are represented by all bits set to 1 and white pixels by all bits
|
||||
set to 0. When the number of bits per pixel is smaller than 8, several pixels
|
||||
are packed together in a byte.
|
||||
|
||||
FB_VISUAL_MONO01 is currently used with FB_TYPE_PACKED_PIXELS only.
|
||||
|
||||
- FB_VISUAL_MONO10
|
||||
|
||||
Pixels are black or white and stored on a number of bits (typically one)
|
||||
specified by the variable screen information bpp field.
|
||||
|
||||
Black pixels are represented by all bits set to 0 and white pixels by all bits
|
||||
set to 1. When the number of bits per pixel is smaller than 8, several pixels
|
||||
are packed together in a byte.
|
||||
|
||||
FB_VISUAL_MONO01 is currently used with FB_TYPE_PACKED_PIXELS only.
|
||||
|
||||
- FB_VISUAL_TRUECOLOR
|
||||
|
||||
Pixels are broken into red, green and blue components, and each component
|
||||
indexes a read-only lookup table for the corresponding value. Lookup tables
|
||||
are device-dependent, and provide linear or non-linear ramps.
|
||||
|
||||
Each component is stored in a macropixel according to the variable screen
|
||||
information red, green, blue and transp fields.
|
||||
|
||||
- FB_VISUAL_PSEUDOCOLOR and FB_VISUAL_STATIC_PSEUDOCOLOR
|
||||
|
||||
Pixel values are encoded as indices into a colormap that stores red, green and
|
||||
blue components. The colormap is read-only for FB_VISUAL_STATIC_PSEUDOCOLOR
|
||||
and read-write for FB_VISUAL_PSEUDOCOLOR.
|
||||
|
||||
Each pixel value is stored in the number of bits reported by the variable
|
||||
screen information bits_per_pixel field.
|
||||
|
||||
- FB_VISUAL_DIRECTCOLOR
|
||||
|
||||
Pixels are broken into red, green and blue components, and each component
|
||||
indexes a programmable lookup table for the corresponding value.
|
||||
|
||||
Each component is stored in a macropixel according to the variable screen
|
||||
information red, green, blue and transp fields.
|
||||
|
||||
- FB_VISUAL_FOURCC
|
||||
|
||||
Pixels are encoded and interpreted as described by the format FOURCC
|
||||
identifier stored in the variable screen information grayscale field.
|
||||
|
||||
|
||||
3. Screen information
|
||||
---------------------
|
||||
|
||||
Screen information are queried by applications using the FBIOGET_FSCREENINFO
|
||||
and FBIOGET_VSCREENINFO ioctls. Those ioctls take a pointer to a
|
||||
fb_fix_screeninfo and fb_var_screeninfo structure respectively.
|
||||
|
||||
struct fb_fix_screeninfo stores device independent unchangeable information
|
||||
about the frame buffer device and the current format. Those information can't
|
||||
be directly modified by applications, but can be changed by the driver when an
|
||||
application modifies the format.
|
||||
|
||||
struct fb_fix_screeninfo {
|
||||
char id[16]; /* identification string eg "TT Builtin" */
|
||||
unsigned long smem_start; /* Start of frame buffer mem */
|
||||
/* (physical address) */
|
||||
__u32 smem_len; /* Length of frame buffer mem */
|
||||
__u32 type; /* see FB_TYPE_* */
|
||||
__u32 type_aux; /* Interleave for interleaved Planes */
|
||||
__u32 visual; /* see FB_VISUAL_* */
|
||||
__u16 xpanstep; /* zero if no hardware panning */
|
||||
__u16 ypanstep; /* zero if no hardware panning */
|
||||
__u16 ywrapstep; /* zero if no hardware ywrap */
|
||||
__u32 line_length; /* length of a line in bytes */
|
||||
unsigned long mmio_start; /* Start of Memory Mapped I/O */
|
||||
/* (physical address) */
|
||||
__u32 mmio_len; /* Length of Memory Mapped I/O */
|
||||
__u32 accel; /* Indicate to driver which */
|
||||
/* specific chip/card we have */
|
||||
__u16 capabilities; /* see FB_CAP_* */
|
||||
__u16 reserved[2]; /* Reserved for future compatibility */
|
||||
};
|
||||
|
||||
struct fb_var_screeninfo stores device independent changeable information
|
||||
about a frame buffer device, its current format and video mode, as well as
|
||||
other miscellaneous parameters.
|
||||
|
||||
struct fb_var_screeninfo {
|
||||
__u32 xres; /* visible resolution */
|
||||
__u32 yres;
|
||||
__u32 xres_virtual; /* virtual resolution */
|
||||
__u32 yres_virtual;
|
||||
__u32 xoffset; /* offset from virtual to visible */
|
||||
__u32 yoffset; /* resolution */
|
||||
|
||||
__u32 bits_per_pixel; /* guess what */
|
||||
__u32 grayscale; /* 0 = color, 1 = grayscale, */
|
||||
/* >1 = FOURCC */
|
||||
struct fb_bitfield red; /* bitfield in fb mem if true color, */
|
||||
struct fb_bitfield green; /* else only length is significant */
|
||||
struct fb_bitfield blue;
|
||||
struct fb_bitfield transp; /* transparency */
|
||||
|
||||
__u32 nonstd; /* != 0 Non standard pixel format */
|
||||
|
||||
__u32 activate; /* see FB_ACTIVATE_* */
|
||||
|
||||
__u32 height; /* height of picture in mm */
|
||||
__u32 width; /* width of picture in mm */
|
||||
|
||||
__u32 accel_flags; /* (OBSOLETE) see fb_info.flags */
|
||||
|
||||
/* Timing: All values in pixclocks, except pixclock (of course) */
|
||||
__u32 pixclock; /* pixel clock in ps (pico seconds) */
|
||||
__u32 left_margin; /* time from sync to picture */
|
||||
__u32 right_margin; /* time from picture to sync */
|
||||
__u32 upper_margin; /* time from sync to picture */
|
||||
__u32 lower_margin;
|
||||
__u32 hsync_len; /* length of horizontal sync */
|
||||
__u32 vsync_len; /* length of vertical sync */
|
||||
__u32 sync; /* see FB_SYNC_* */
|
||||
__u32 vmode; /* see FB_VMODE_* */
|
||||
__u32 rotate; /* angle we rotate counter clockwise */
|
||||
__u32 colorspace; /* colorspace for FOURCC-based modes */
|
||||
__u32 reserved[4]; /* Reserved for future compatibility */
|
||||
};
|
||||
|
||||
To modify variable information, applications call the FBIOPUT_VSCREENINFO
|
||||
ioctl with a pointer to a fb_var_screeninfo structure. If the call is
|
||||
successful, the driver will update the fixed screen information accordingly.
|
||||
|
||||
Instead of filling the complete fb_var_screeninfo structure manually,
|
||||
applications should call the FBIOGET_VSCREENINFO ioctl and modify only the
|
||||
fields they care about.
|
||||
|
||||
|
||||
4. Format configuration
|
||||
-----------------------
|
||||
|
||||
Frame buffer devices offer two ways to configure the frame buffer format: the
|
||||
legacy API and the FOURCC-based API.
|
||||
|
||||
|
||||
The legacy API has been the only frame buffer format configuration API for a
|
||||
long time and is thus widely used by application. It is the recommended API
|
||||
for applications when using RGB and grayscale formats, as well as legacy
|
||||
non-standard formats.
|
||||
|
||||
To select a format, applications set the fb_var_screeninfo bits_per_pixel field
|
||||
to the desired frame buffer depth. Values up to 8 will usually map to
|
||||
monochrome, grayscale or pseudocolor visuals, although this is not required.
|
||||
|
||||
- For grayscale formats, applications set the grayscale field to one. The red,
|
||||
blue, green and transp fields must be set to 0 by applications and ignored by
|
||||
drivers. Drivers must fill the red, blue and green offsets to 0 and lengths
|
||||
to the bits_per_pixel value.
|
||||
|
||||
- For pseudocolor formats, applications set the grayscale field to zero. The
|
||||
red, blue, green and transp fields must be set to 0 by applications and
|
||||
ignored by drivers. Drivers must fill the red, blue and green offsets to 0
|
||||
and lengths to the bits_per_pixel value.
|
||||
|
||||
- For truecolor and directcolor formats, applications set the grayscale field
|
||||
to zero, and the red, blue, green and transp fields to describe the layout of
|
||||
color components in memory.
|
||||
|
||||
struct fb_bitfield {
|
||||
__u32 offset; /* beginning of bitfield */
|
||||
__u32 length; /* length of bitfield */
|
||||
__u32 msb_right; /* != 0 : Most significant bit is */
|
||||
/* right */
|
||||
};
|
||||
|
||||
Pixel values are bits_per_pixel wide and are split in non-overlapping red,
|
||||
green, blue and alpha (transparency) components. Location and size of each
|
||||
component in the pixel value are described by the fb_bitfield offset and
|
||||
length fields. Offset are computed from the right.
|
||||
|
||||
Pixels are always stored in an integer number of bytes. If the number of
|
||||
bits per pixel is not a multiple of 8, pixel values are padded to the next
|
||||
multiple of 8 bits.
|
||||
|
||||
Upon successful format configuration, drivers update the fb_fix_screeninfo
|
||||
type, visual and line_length fields depending on the selected format.
|
||||
|
||||
|
||||
The FOURCC-based API replaces format descriptions by four character codes
|
||||
(FOURCC). FOURCCs are abstract identifiers that uniquely define a format
|
||||
without explicitly describing it. This is the only API that supports YUV
|
||||
formats. Drivers are also encouraged to implement the FOURCC-based API for RGB
|
||||
and grayscale formats.
|
||||
|
||||
Drivers that support the FOURCC-based API report this capability by setting
|
||||
the FB_CAP_FOURCC bit in the fb_fix_screeninfo capabilities field.
|
||||
|
||||
FOURCC definitions are located in the linux/videodev2.h header. However, and
|
||||
despite starting with the V4L2_PIX_FMT_prefix, they are not restricted to V4L2
|
||||
and don't require usage of the V4L2 subsystem. FOURCC documentation is
|
||||
available in Documentation/DocBook/v4l/pixfmt.xml.
|
||||
|
||||
To select a format, applications set the grayscale field to the desired FOURCC.
|
||||
For YUV formats, they should also select the appropriate colorspace by setting
|
||||
the colorspace field to one of the colorspaces listed in linux/videodev2.h and
|
||||
documented in Documentation/DocBook/v4l/colorspaces.xml.
|
||||
|
||||
The red, green, blue and transp fields are not used with the FOURCC-based API.
|
||||
For forward compatibility reasons applications must zero those fields, and
|
||||
drivers must ignore them. Values other than 0 may get a meaning in future
|
||||
extensions.
|
||||
|
||||
Upon successful format configuration, drivers update the fb_fix_screeninfo
|
||||
type, visual and line_length fields depending on the selected format. The type
|
||||
and visual fields are set to FB_TYPE_FOURCC and FB_VISUAL_FOURCC respectively.
|
|
@ -439,52 +439,6 @@ Who: Jean Delvare <khali@linux-fr.org>
|
|||
|
||||
----------------------------
|
||||
|
||||
What: Support for driver specific ioctls in the pwc driver (everything
|
||||
defined in media/pwc-ioctl.h)
|
||||
When: 3.3
|
||||
Why: This stems from the v4l1 era, with v4l2 everything can be done with
|
||||
standardized v4l2 API calls
|
||||
Who: Hans de Goede <hdegoede@redhat.com>
|
||||
|
||||
----------------------------
|
||||
|
||||
What: Driver specific sysfs API in the pwc driver
|
||||
When: 3.3
|
||||
Why: Setting pan/tilt should be done with v4l2 controls, like with other
|
||||
cams. The button is available as a standard input device
|
||||
Who: Hans de Goede <hdegoede@redhat.com>
|
||||
|
||||
----------------------------
|
||||
|
||||
What: Driver specific use of pixfmt.priv in the pwc driver
|
||||
When: 3.3
|
||||
Why: The .priv field never was intended for this, setting a framerate is
|
||||
support using the standardized S_PARM ioctl
|
||||
Who: Hans de Goede <hdegoede@redhat.com>
|
||||
|
||||
----------------------------
|
||||
|
||||
What: Software emulation of arbritary resolutions in the pwc driver
|
||||
When: 3.3
|
||||
Why: The pwc driver claims to support any resolution between 160x120
|
||||
and 640x480, but emulates this by simply drawing a black border
|
||||
around the image. Userspace can draw its own black border if it
|
||||
really wants one.
|
||||
Who: Hans de Goede <hdegoede@redhat.com>
|
||||
|
||||
----------------------------
|
||||
|
||||
What: For VIDIOC_S_FREQUENCY the type field must match the device node's type.
|
||||
If not, return -EINVAL.
|
||||
When: 3.2
|
||||
Why: It makes no sense to switch the tuner to radio mode by calling
|
||||
VIDIOC_S_FREQUENCY on a video node, or to switch the tuner to tv mode by
|
||||
calling VIDIOC_S_FREQUENCY on a radio node. This is the first step of a
|
||||
move to more consistent handling of tv and radio tuners.
|
||||
Who: Hans Verkuil <hans.verkuil@cisco.com>
|
||||
|
||||
----------------------------
|
||||
|
||||
What: Opening a radio device node will no longer automatically switch the
|
||||
tuner mode from tv to radio.
|
||||
When: 3.3
|
||||
|
|
|
@ -119,12 +119,20 @@ Mount Options
|
|||
must rely on TCP's error correction to detect data corruption
|
||||
in the data payload.
|
||||
|
||||
noasyncreaddir
|
||||
Disable client's use its local cache to satisfy readdir
|
||||
requests. (This does not change correctness; the client uses
|
||||
cached metadata only when a lease or capability ensures it is
|
||||
valid.)
|
||||
dcache
|
||||
Use the dcache contents to perform negative lookups and
|
||||
readdir when the client has the entire directory contents in
|
||||
its cache. (This does not change correctness; the client uses
|
||||
cached metadata only when a lease or capability ensures it is
|
||||
valid.)
|
||||
|
||||
nodcache
|
||||
Do not use the dcache as above. This avoids a significant amount of
|
||||
complex code, sacrificing performance without affecting correctness,
|
||||
and is useful for tracking down bugs.
|
||||
|
||||
noasyncreaddir
|
||||
Do not use the dcache as above for readdir.
|
||||
|
||||
More Information
|
||||
================
|
||||
|
|
|
@ -2,6 +2,8 @@
|
|||
- this file (nfs-related documentation).
|
||||
Exporting
|
||||
- explanation of how to make filesystems exportable.
|
||||
fault_injection.txt
|
||||
- information for using fault injection on the server
|
||||
knfsd-stats.txt
|
||||
- statistics which the NFS server makes available to user space.
|
||||
nfs.txt
|
||||
|
|
|
@ -0,0 +1,69 @@
|
|||
|
||||
Fault Injection
|
||||
===============
|
||||
Fault injection is a method for forcing errors that may not normally occur, or
|
||||
may be difficult to reproduce. Forcing these errors in a controlled environment
|
||||
can help the developer find and fix bugs before their code is shipped in a
|
||||
production system. Injecting an error on the Linux NFS server will allow us to
|
||||
observe how the client reacts and if it manages to recover its state correctly.
|
||||
|
||||
NFSD_FAULT_INJECTION must be selected when configuring the kernel to use this
|
||||
feature.
|
||||
|
||||
|
||||
Using Fault Injection
|
||||
=====================
|
||||
On the client, mount the fault injection server through NFS v4.0+ and do some
|
||||
work over NFS (open files, take locks, ...).
|
||||
|
||||
On the server, mount the debugfs filesystem to <debug_dir> and ls
|
||||
<debug_dir>/nfsd. This will show a list of files that will be used for
|
||||
injecting faults on the NFS server. As root, write a number n to the file
|
||||
corresponding to the action you want the server to take. The server will then
|
||||
process the first n items it finds. So if you want to forget 5 locks, echo '5'
|
||||
to <debug_dir>/nfsd/forget_locks. A value of 0 will tell the server to forget
|
||||
all corresponding items. A log message will be created containing the number
|
||||
of items forgotten (check dmesg).
|
||||
|
||||
Go back to work on the client and check if the client recovered from the error
|
||||
correctly.
|
||||
|
||||
|
||||
Available Faults
|
||||
================
|
||||
forget_clients:
|
||||
The NFS server keeps a list of clients that have placed a mount call. If
|
||||
this list is cleared, the server will have no knowledge of who the client
|
||||
is, forcing the client to reauthenticate with the server.
|
||||
|
||||
forget_openowners:
|
||||
The NFS server keeps a list of what files are currently opened and who
|
||||
they were opened by. Clearing this list will force the client to reopen
|
||||
its files.
|
||||
|
||||
forget_locks:
|
||||
The NFS server keeps a list of what files are currently locked in the VFS.
|
||||
Clearing this list will force the client to reclaim its locks (files are
|
||||
unlocked through the VFS as they are cleared from this list).
|
||||
|
||||
forget_delegations:
|
||||
A delegation is used to assure the client that a file, or part of a file,
|
||||
has not changed since the delegation was awarded. Clearing this list will
|
||||
force the client to reaquire its delegation before accessing the file
|
||||
again.
|
||||
|
||||
recall_delegations:
|
||||
Delegations can be recalled by the server when another client attempts to
|
||||
access a file. This test will notify the client that its delegation has
|
||||
been revoked, forcing the client to reaquire the delegation before using
|
||||
the file again.
|
||||
|
||||
|
||||
tools/nfs/inject_faults.sh script
|
||||
=================================
|
||||
This script has been created to ease the fault injection process. This script
|
||||
will detect the mounted debugfs directory and write to the files located there
|
||||
based on the arguments passed by the user. For example, running
|
||||
`inject_faults.sh forget_locks 1` as root will instruct the server to forget
|
||||
one lock. Running `inject_faults forget_locks` will instruct the server to
|
||||
forgetall locks.
|
|
@ -93,8 +93,8 @@ byte alignment:
|
|||
|
||||
Compressed data blocks are written to the filesystem as files are read from
|
||||
the source directory, and checked for duplicates. Once all file data has been
|
||||
written the completed inode, directory, fragment, export and uid/gid lookup
|
||||
tables are written.
|
||||
written the completed inode, directory, fragment, export, uid/gid lookup and
|
||||
xattr tables are written.
|
||||
|
||||
3.1 Compression options
|
||||
-----------------------
|
||||
|
@ -151,7 +151,7 @@ in each metadata block. Directories are sorted in alphabetical order,
|
|||
and at lookup the index is scanned linearly looking for the first filename
|
||||
alphabetically larger than the filename being looked up. At this point the
|
||||
location of the metadata block the filename is in has been found.
|
||||
The general idea of the index is ensure only one metadata block needs to be
|
||||
The general idea of the index is to ensure only one metadata block needs to be
|
||||
decompressed to do a lookup irrespective of the length of the directory.
|
||||
This scheme has the advantage that it doesn't require extra memory overhead
|
||||
and doesn't require much extra storage on disk.
|
||||
|
|
|
@ -26,6 +26,10 @@ Supported chips:
|
|||
Prefix: 'it8721'
|
||||
Addresses scanned: from Super I/O config space (8 I/O ports)
|
||||
Datasheet: Not publicly available
|
||||
* IT8728F
|
||||
Prefix: 'it8728'
|
||||
Addresses scanned: from Super I/O config space (8 I/O ports)
|
||||
Datasheet: Not publicly available
|
||||
* SiS950 [clone of IT8705F]
|
||||
Prefix: 'it87'
|
||||
Addresses scanned: from Super I/O config space (8 I/O ports)
|
||||
|
@ -71,7 +75,7 @@ Description
|
|||
-----------
|
||||
|
||||
This driver implements support for the IT8705F, IT8712F, IT8716F,
|
||||
IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips.
|
||||
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E and SiS950 chips.
|
||||
|
||||
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
|
||||
joysticks and other miscellaneous stuff. For hardware monitoring, they
|
||||
|
@ -105,6 +109,9 @@ The IT8726F is just bit enhanced IT8716F with additional hardware
|
|||
for AMD power sequencing. Therefore the chip will appear as IT8716F
|
||||
to userspace applications.
|
||||
|
||||
The IT8728F is considered compatible with the IT8721F, until a datasheet
|
||||
becomes available (hopefully.)
|
||||
|
||||
Temperatures are measured in degrees Celsius. An alarm is triggered once
|
||||
when the Overtemperature Shutdown limit is crossed.
|
||||
|
||||
|
@ -121,8 +128,8 @@ alarm is triggered if the voltage has crossed a programmable minimum or
|
|||
maximum limit. Note that minimum in this case always means 'closest to
|
||||
zero'; this is important for negative voltage measurements. All voltage
|
||||
inputs can measure voltages between 0 and 4.08 volts, with a resolution of
|
||||
0.016 volt (except IT8721F/IT8758E: 0.012 volt.) The battery voltage in8 does
|
||||
not have limit registers.
|
||||
0.016 volt (except IT8721F/IT8758E and IT8728F: 0.012 volt.) The battery
|
||||
voltage in8 does not have limit registers.
|
||||
|
||||
On the IT8721F/IT8758E, some voltage inputs are internal and scaled inside
|
||||
the chip (in7, in8 and optionally in3). The driver handles this transparently
|
||||
|
|
|
@ -12,6 +12,11 @@ Supported chips:
|
|||
Addresses scanned: I2C 0x18 and 0x4e
|
||||
Datasheet: Publicly available at the National Semiconductor website
|
||||
http://www.national.com/pf/LM/LM64.html
|
||||
* National Semiconductor LM96163
|
||||
Prefix: 'lm96163'
|
||||
Addresses scanned: I2C 0x4c
|
||||
Datasheet: Publicly available at the National Semiconductor website
|
||||
http://www.national.com/pf/LM/LM96163.html
|
||||
|
||||
Author: Jean Delvare <khali@linux-fr.org>
|
||||
|
||||
|
@ -49,16 +54,24 @@ value for measuring the speed of the fan. It can measure fan speeds down to
|
|||
Note that the pin used for fan monitoring is shared with an alert out
|
||||
function. Depending on how the board designer wanted to use the chip, fan
|
||||
speed monitoring will or will not be possible. The proper chip configuration
|
||||
is left to the BIOS, and the driver will blindly trust it.
|
||||
is left to the BIOS, and the driver will blindly trust it. Only the original
|
||||
LM63 suffers from this limitation, the LM64 and LM96163 have separate pins
|
||||
for fan monitoring and alert out. On the LM64, monitoring is always enabled;
|
||||
on the LM96163 it can be disabled.
|
||||
|
||||
A PWM output can be used to control the speed of the fan. The LM63 has two
|
||||
PWM modes: manual and automatic. Automatic mode is not fully implemented yet
|
||||
(you cannot define your custom PWM/temperature curve), and mode change isn't
|
||||
supported either.
|
||||
|
||||
The lm63 driver will not update its values more frequently than every
|
||||
second; reading them more often will do no harm, but will return 'old'
|
||||
values.
|
||||
The lm63 driver will not update its values more frequently than configured with
|
||||
the update_interval sysfs attribute; reading them more often will do no harm,
|
||||
but will return 'old' values. Values in the automatic fan control lookup table
|
||||
(attributes pwm1_auto_*) have their own independent lifetime of 5 seconds.
|
||||
|
||||
The LM64 is effectively an LM63 with GPIO lines. The driver does not
|
||||
support these GPIO lines at present.
|
||||
|
||||
The LM96163 is an enhanced version of LM63 with improved temperature accuracy
|
||||
and better PWM resolution. For LM96163, the external temperature sensor type is
|
||||
configurable as CPU embedded diode(1) or 3904 transistor(2).
|
||||
|
|
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