diff options
| author | Stefan Roese | 2017-08-16 17:37:16 +0200 |
|---|---|---|
| committer | Bin Meng | 2017-08-24 11:00:47 +0800 |
| commit | 3ca7a06afb7cbc867b7861a8b9aada74e5bbb559 (patch) | |
| tree | 725eb62e426a11719fdfaaaa080fe462ddeaea5e /include/serial.h | |
| parent | 7fded0ce0ff68551ceb631f98d60db162e49f80c (diff) | |
serial: serial-uclass: Add generic serial RX buffer support
Pasting longer lines into the U-Boot console prompt sometimes leads to
characters missing. One problem here is the small 16-byte FIFO of the
legacy NS16550 UART, e.g. on x86 platforms.
This patch now introduces a Kconfig option to enable RX buffer support
for all DM based serial drivers. With this option enabled, I was
able paste really long lines into the U-Boot console, without any
characters missing.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'include/serial.h')
| -rw-r--r-- | include/serial.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/serial.h b/include/serial.h index f4171964ae6..d87f01082a0 100644 --- a/include/serial.h +++ b/include/serial.h @@ -148,10 +148,18 @@ struct dm_serial_ops { /** * struct serial_dev_priv - information about a device used by the uclass * - * @sdev: stdio device attached to this uart + * @sdev: stdio device attached to this uart + * + * @buf: Pointer to the RX buffer + * @rd_ptr: Read pointer in the RX buffer + * @wr_ptr: Write pointer in the RX buffer */ struct serial_dev_priv { struct stdio_dev *sdev; + + char *buf; + int rd_ptr; + int wr_ptr; }; /* Access the serial operations for a device */ |