linux-toradex.git/drivers/tty/serial/cpm_uart, branch v3.10.78

TTY: switch tty_flip_buffer_push

2013-01-16T06:30:15+00:00

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

Now, the one where most of tty_port_tty_get gets removed:
tty_flip_buffer_push.

IOW we also closed all the races in drivers not using tty_port_tty_get
at all yet.

Also we move tty_flip_buffer_push declaration from include/linux/tty.h
to include/linux/tty_flip.h to all others while we are changing it
anyway.

Signed-off-by: Jiri Slaby 
Signed-off-by: Greg Kroah-Hartman

TTY: move low_latency to tty_port

2013-01-16T06:23:16+00:00

One point is to have less places where we actually need tty pointer.
The other is that low_latency is bound to buffer processing and
buffers are now in tty_port. So it makes sense to move low_latency to
tty_port too.

Signed-off-by: Jiri Slaby 
Signed-off-by: Greg Kroah-Hartman

TTY: switch tty_insert_flip_char

2013-01-16T06:21:36+00:00

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_char is the next one to proceed. This one is used all
over the code, so the patch is huge.

Signed-off-by: Jiri Slaby 
Signed-off-by: Greg Kroah-Hartman

TTY: switch tty_buffer_request_room to tty_port

2013-01-16T06:17:28+00:00

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty pointer in
many call sites. Only tty_port will be needed and hence no more
tty_port_tty_get calls in those paths.

Here we start with tty_buffer_request_room.

Signed-off-by: Jiri Slaby 
Signed-off-by: Greg Kroah-Hartman

tty: remove use of __devexit

2012-11-21T23:27:46+00:00

CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton 
Cc: Jiri Slaby 
Cc: Alan Cox 
Acked-by: Tobias Klauser 
Cc: Lucas Tavares 
Cc: Daniel Walker 
Cc: Bryan Huntsman 
Cc: "David S. Miller" 
Cc: Peter Korsgaard 
Cc: Tony Prisk 
Acked-by: David Brown 
Signed-off-by: Greg Kroah-Hartman

tty: remove use of __devinit

2012-11-21T23:22:52+00:00

CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton 
Cc: Jiri Slaby 
Cc: Alan Cox 
Cc: Lucas Tavares 
Cc: "David S. Miller" 
Cc: Peter Korsgaard 
Cc: Tony Prisk 
Acked-by: Tobias Klauser 
Acked-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman

Powerpc 8xx CPM_UART setting MAXIDL register proportionaly to baud rate

2012-09-26T20:39:39+00:00

MAXIDL is the timeout after which a receive buffer is closed when not full if
no more characters are received. We calculate it from the baudrate so that the
duration is always the same at standard rates: about 4ms. At 9600 bauds it gives
a timeout of 4 characters, which is the timeout on the 8250 UART.

Signed-off-by: Christophe Leroy 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

Powerpc 8xx CPM_UART maxidl should not depend on fifo size

2012-09-26T20:39:39+00:00

maxidl register was set to fifo size. There is no reason to set this
register to same value as fifo size. Setting it now to 0x10 by default
as in the UCC UART driver.

Signed-off-by: Christophe Leroy 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

Powerpc 8xx CPM_UART too many interrupts

2012-09-26T20:39:39+00:00

Setting the fifo to only 1 byte generates one interrupt every 1ms at 9600 bauds.
This is too much. This patch reduces the threshold to speeds below 2400 bauds
like in the 8250 UART driver.

Signed-off-by: Christophe Leroy 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

Powerpc 8xx CPM_UART desynchronisation

2012-09-26T20:39:39+00:00

This patch fixes a desynchronisation problem with CPM UART driver on
Powerpc MPC8xx. The problem happens if data is received before the device
is open by the user application.

Signed-off-by: Christophe Leroy 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman