serial: 8250_dma: adjust DMA address of the UART

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Some UARTs, e.g. one is used in Intel Quark, have a different address base for
DMA operations. Introduce an additional field (per RX and TX DMA channels) in
struct uart_8250_dma to cover those cases.

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Andy Shevchenko 2016-08-17 19:20:25 +03:00 • committed by Greg Kroah-Hartman

parent 8d17047207

commit d1834babe4

2 changed files with 11 additions and 2 deletions

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5

drivers/tty/serial/8250/8250.h

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8

drivers/tty/serial/8250/8250_dma.c

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