| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame] | 1 | # |
| 2 | # IrDA protocol configuration |
| 3 | # |
| 4 | |
| 5 | menuconfig IRDA |
| 6 | depends on NET && !S390 |
| 7 | tristate "IrDA (infrared) subsystem support" |
| 8 | select CRC_CCITT |
| 9 | ---help--- |
| 10 | Say Y here if you want to build support for the IrDA (TM) protocols. |
| 11 | The Infrared Data Associations (tm) specifies standards for wireless |
| 12 | infrared communication and is supported by most laptops and PDA's. |
| 13 | |
| 14 | To use Linux support for the IrDA (tm) protocols, you will also need |
| 15 | some user-space utilities like irattach. For more information, see |
| 16 | the file <file:Documentation/networking/irda.txt>. You also want to |
| 17 | read the IR-HOWTO, available at |
| 18 | <http://www.tldp.org/docs.html#howto>. |
| 19 | |
| 20 | If you want to exchange bits of data (vCal, vCard) with a PDA, you |
| 21 | will need to install some OBEX application, such as OpenObex : |
| 22 | <http://sourceforge.net/projects/openobex/> |
| 23 | |
| 24 | To compile this support as a module, choose M here: the module will |
| 25 | be called irda. |
| 26 | |
| 27 | comment "IrDA protocols" |
| 28 | depends on IRDA |
| 29 | |
| 30 | source "net/irda/irlan/Kconfig" |
| 31 | |
| 32 | source "net/irda/irnet/Kconfig" |
| 33 | |
| 34 | source "net/irda/ircomm/Kconfig" |
| 35 | |
| 36 | config IRDA_ULTRA |
| 37 | bool "Ultra (connectionless) protocol" |
| 38 | depends on IRDA |
| 39 | help |
| 40 | Say Y here to support the connectionless Ultra IRDA protocol. |
| 41 | Ultra allows to exchange data over IrDA with really simple devices |
| 42 | (watch, beacon) without the overhead of the IrDA protocol (no handshaking, |
| 43 | no management frames, simple fixed header). |
| 44 | Ultra is available as a special socket : socket(AF_IRDA, SOCK_DGRAM, 1); |
| 45 | |
| 46 | comment "IrDA options" |
| 47 | depends on IRDA |
| 48 | |
| 49 | config IRDA_CACHE_LAST_LSAP |
| 50 | bool "Cache last LSAP" |
| 51 | depends on IRDA |
| 52 | help |
| 53 | Say Y here if you want IrLMP to cache the last LSAP used. This |
| 54 | makes sense since most frames will be sent/received on the same |
| 55 | connection. Enabling this option will save a hash-lookup per frame. |
| 56 | |
| 57 | If unsure, say Y. |
| 58 | |
| 59 | config IRDA_FAST_RR |
| 60 | bool "Fast RRs (low latency)" |
| 61 | depends on IRDA |
| 62 | ---help--- |
| 63 | Say Y here is you want IrLAP to send fast RR (Receive Ready) frames |
| 64 | when acting as a primary station. |
| 65 | Disabling this option will make latency over IrDA very bad. Enabling |
| 66 | this option will make the IrDA stack send more packet than strictly |
| 67 | necessary, thus reduce your battery life (but not that much). |
| 68 | |
| 69 | Fast RR will make IrLAP send out a RR frame immediately when |
| 70 | receiving a frame if its own transmit queue is currently empty. This |
| 71 | will give a lot of speed improvement when receiving much data since |
| 72 | the secondary station will not have to wait the max. turn around |
| 73 | time (usually 500ms) before it is allowed to transmit the next time. |
| 74 | If the transmit queue of the secondary is also empty, the primary will |
| 75 | start backing-off before sending another RR frame, waiting longer |
| 76 | each time until the back-off reaches the max. turn around time. |
| 77 | This back-off increase in controlled via |
| 78 | /proc/sys/net/irda/fast_poll_increase |
| 79 | |
| 80 | If unsure, say Y. |
| 81 | |
| 82 | config IRDA_DEBUG |
| 83 | bool "Debug information" |
| 84 | depends on IRDA |
| 85 | help |
| 86 | Say Y here if you want the IrDA subsystem to write debug information |
| 87 | to your syslog. You can change the debug level in |
| 88 | /proc/sys/net/irda/debug . |
| 89 | When this option is enabled, the IrDA also perform many extra internal |
| 90 | verifications which will usually prevent the kernel to crash in case of |
| 91 | bugs. |
| 92 | |
| 93 | If unsure, say Y (since it makes it easier to find the bugs). |
| 94 | |
| 95 | source "drivers/net/irda/Kconfig" |
| 96 | |