diff options
Diffstat (limited to 'Documentation/parport.txt')
| -rw-r--r-- | Documentation/parport.txt | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/Documentation/parport.txt b/Documentation/parport.txt index b4d7ff895..59e75b5fa 100644 --- a/Documentation/parport.txt +++ b/Documentation/parport.txt @@ -109,7 +109,10 @@ parport | | |-- active | | `-- lp | | `-- timeslice -| |-- hardware +| |-- base-addr +| |-- irq +| |-- dma +| |-- modes | `-- spintime `-- parport1 |-- autoprobe @@ -121,7 +124,10 @@ parport | |-- active | `-- ppa | `-- timeslice - |-- hardware + |-- base-addr + |-- irq + |-- dma + |-- modes `-- spintime @@ -133,7 +139,28 @@ devices/active A list of the device drivers using that port. A "+" string "none" means that there are no device drivers using that port. -hardware Parallel port's base address, IRQ line and DMA channel. +base-addr Parallel port's base address, or addresses if the port + has more than one in which case they are separated + with tabs. These values might not have any sensible + meaning for some ports. + +irq Parallel port's IRQ, or -1 if none is being used. + +dma Parallel port's DMA channel, or -1 if none is being + used. + +modes Parallel port's hardware modes, comma-separated, + meaning: + + PCSPP PC-style SPP registers are available. + TRISTATE Port is bidirectional. + COMPAT Hardware acceleration for printers is + available and will be used. + EPP Hardware acceleration for EPP protocol + is available and will be used. + ECP Hardware acceleration for ECP protocol + is available and will be used. + DMA DMA is available and will be used. autoprobe Any IEEE-1284 device ID information that has been acquired from the (non-IEEE 1284.3) device. |