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uartlite: Adding a kernel parameter for the number of uartlites

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The number of uartlites should be set by a kernel parameter instead of
using a #define. This allows the user to set the number of uartlites
using only kconfig and not modifying kernel source.

The uartlite is used by FPGAs that support a basically unlimited number
of uarts so limiting it at 16 dosn't make sense as users might need more
than that.

Signed-off-by: Sam Povilus <kernel.development@povil.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sam Povilus 2017-03-15 20:43:24 -06:00 committed by Greg Kroah-Hartman
parent 81e33b51ed
commit b44b96a060
2 changed files with 10 additions and 1 deletions
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9
drivers/tty/serial/Kconfig
View File

@ -630,6 +630,15 @@ config SERIAL_UARTLITE_CONSOLE
console (the system console is the device which receives all kernel
messages and warnings and which allows logins in single user mode).
config SERIAL_UARTLITE_NR_UARTS
int "Maximum number of uartlite serial ports"
depends on SERIAL_UARTLITE
range 1 256
default 1
help
Set this to the number of uartlites in your system, or the number
you think you might implement.
config SERIAL_SUNCORE
bool
depends on SPARC

2
drivers/tty/serial/uartlite.c
View File

@ -28,7 +28,7 @@
#define ULITE_NAME "ttyUL"
#define ULITE_MAJOR 204
#define ULITE_MINOR 187
#define ULITE_NR_UARTS 16
#define ULITE_NR_UARTS CONFIG_SERIAL_UARTLITE_NR_UARTS
/* ---------------------------------------------------------------------
* Register definitions