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| author | Bin Meng <bmeng.cn@gmail.com> | 2014-12-12 21:05:25 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-12-13 22:32:05 -0700 |
| commit | a2927e09bccca5b665709d77fc54919292d4bcb7 (patch) | |
| tree | 0852399092f7a8184f74e8fc25f06154127a72ed /include | |
| parent | 568868dda9b8f8e901962231713fc0cb3f42c410 (diff) | |
| download | u-boot-a2927e09bccca5b665709d77fc54919292d4bcb7.tar.gz u-boot-a2927e09bccca5b665709d77fc54919292d4bcb7.tar.bz2 u-boot-a2927e09bccca5b665709d77fc54919292d4bcb7.zip | |
x86: Add a simple superio driver for SMSC LPC47M
On most x86 boards, the legacy serial ports (io address 0x3f8/0x2f8)
are provided by a superio chip connected to the LPC bus. We must
program the superio chip so that serial ports are available for us.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/smsc_lpc47m.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/smsc_lpc47m.h b/include/smsc_lpc47m.h new file mode 100644 index 0000000000..bffd622f0f --- /dev/null +++ b/include/smsc_lpc47m.h @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SMSC_LPC47M_H_ +#define _SMSC_LPC47M_H_ + +/** + * Configure the base I/O port of the specified serial device and enable the + * serial device. + * + * @dev: High 8 bits = Super I/O port, low 8 bits = logical device number. + * @iobase: Processor I/O port address to assign to this serial device. + */ +void lpc47m_enable_serial(u16 dev, u16 iobase); + +#endif /* _SMSC_LPC47M_H_ */ |