Date: Tue, 23 May 2006 00:41:12 +0000 (UTC) From: Benno Rice <benno@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/ic ns16550.h src/sys/dev/uart uart_dev_ns8250.c Message-ID: <200605230041.k4N0fC0G058564@repoman.freebsd.org>
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benno 2006-05-23 00:41:12 UTC
FreeBSD src repository
Modified files:
sys/dev/ic ns16550.h
sys/dev/uart uart_dev_ns8250.c
Log:
Allow uart(4)'s ns8250 driver to work with devices whose regshift is > 0.
- Rename REG_DL to REG_DLL and REG_DLH.
- Always treat DLL and DLH as two separate 8-bit registers instead of one
16-bit register.
Additionally, remove the probe for the high 4 bits of IER being 0 and don't
assume we can always read/write 0 to/from those bits.
These changes allow uart(4) to drive the UARTs on the Intel XScale PXA255.
Reviewed by: marcel
Revision Changes Path
1.17 +2 -1 src/sys/dev/ic/ns16550.h
1.22 +16 -24 src/sys/dev/uart/uart_dev_ns8250.c
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