Gabor Juhos 2dff8ad926 tty/serial/ar933x_uart: fix baud rate calculation ... The UART of the AR933x SoC implements a fractional divisor for generating the desired baud rate. The current code uses a fixed value for the fractional part of the divisor, and this leads to improperly calculated baud rates: baud scale step real baud diff 300 5207* 8192 17756 17456 5818.66% 600 2603* 8192 35511 34911 5818.50% 1200 1301* 8192 71023 69823 5818.58% 2400 650* 8192 11241 8841 368.37% 4800 324* 8192 22645 17845 371.77% 9600 161 8192 9645 45 0.46% 14400 107 8192 14468 68 0.47% 19200 80 8192 19290 90 0.46% 28800 53 8192 28935 135 0.46% 38400 39 8192 39063 663 1.72% 57600 26 8192 57870 270 0.46% 115200 12 8192 120192 4992 4.33% 230400 5 8192 260417 30017 13.02% 460800 2 8192 520833 60033 13.02% 921600 0 8192 1562500 640900 69.93% After the patch, the integer and fractional parts of the divisor will be calculated dynamically. This ensures that the UART will use correct baud rates: baud scale step real baud diff 300 6 11 300 0 0.00% 600 54 173 600 0 0.00% 1200 30 195 1200 0 0.00% 2400 30 390 2400 0 0.00% 4800 48 1233 4800 0 0.00% 9600 78 3976 9600 0 0.00% 14400 98 7474 14400 0 0.00% 19200 55 5637 19200 0 0.00% 28800 130 19780 28800 0 0.00% 38400 36 7449 38400 0 0.00% 57600 78 23857 57600 0 0.00% 115200 43 26575 115200 0 0.00% 230400 23 28991 230400 0 0.00% 460800 11 28991 460800 0 0.00% 921600 5 28991 921599 -1 0.00% Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-11-15 17:15:02 -08:00
..
hvc	TTY: hvcs: fix missing unlock on error in hvcs_initialize()	2012-10-24 11:37:02 -07:00
ipwireless	ipwireless: don't oops if we run out of space	2012-11-15 16:53:15 -08:00
serial	tty/serial/ar933x_uart: fix baud rate calculation	2012-11-15 17:15:02 -08:00
vt	TTY: vt, fix paste_selection ldisc handling	2012-10-22 16:50:53 -07:00
amiserial.c	serial: add a new helper function	2012-09-05 13:28:35 -07:00
bfin_jtag_comm.c	TTY: use tty_port_link_device	2012-08-13 16:50:19 -07:00
cyclades.c	serial: add a new helper function	2012-09-05 13:28:35 -07:00
ehv_bytechan.c	TTY: use tty_port_register_device	2012-08-13 16:50:19 -07:00
isicom.c	serial: add a new helper function	2012-09-05 13:28:35 -07:00
Kconfig	tty/serial: put (EXPERIMENTAL) marking back on N_GSM and SERIAL_IFX6X60	2012-09-18 17:17:56 +01:00
Makefile
moxa.c	moxa: dcd handling of CLOCAL is backwards	2012-11-15 16:53:14 -08:00
moxa.h
mxser.c	serial: add a new helper function	2012-09-05 13:28:35 -07:00
mxser.h
n_gsm.c	tty: n_gsm: Fix incorrect debug display	2012-09-17 04:45:30 -07:00
n_hdlc.c
n_r3964.c	tty: localise the lock	2012-08-10 12:55:47 -07:00
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c	tty: add missing newlines to WARN_RATELIMIT	2012-10-25 11:30:27 -07:00
nozomi.c	TTY: use tty_port_register_device	2012-08-13 16:50:19 -07:00
pty.c	tty: Add get- ioctls to fetch tty status v3	2012-10-25 12:07:18 -07:00
rocket.c	TTY: use tty_port_register_device	2012-08-13 16:50:19 -07:00
rocket.h
rocket_int.h
synclink.c	serial: add a new helper function	2012-09-05 13:28:35 -07:00
synclink_gt.c	serial: add a new helper function	2012-09-05 13:28:35 -07:00
synclinkmp.c	serial: add a new helper function	2012-09-05 13:28:35 -07:00
sysrq.c	mm, oom: ensure sysrq+f always passes valid zonelist	2012-11-15 17:13:48 -08:00
tty_audit.c	TTY: audit, stop accessing tty->icount	2012-10-22 16:50:54 -07:00
tty_buffer.c	tty: add missing newlines to WARN_RATELIMIT	2012-10-25 11:30:27 -07:00
tty_io.c	tty: Add get- ioctls to fetch tty status v3	2012-10-25 12:07:18 -07:00
tty_ioctl.c	tty: pty - Move TIOCPKT handling into pty.c	2012-10-25 12:07:18 -07:00
tty_ldisc.c	tty: Use raw spin lock to protect TTY ldisc administration	2012-10-24 11:37:02 -07:00
tty_mutex.c	tty: tty_mutex.c: Fixed coding style warning (using printk)	2012-10-24 11:34:51 -07:00
tty_port.c	TTY: move tty buffers to tty_port	2012-10-22 16:58:28 -07:00