linux-toradex.git/include/linux/serial_core.h, branch v3.2-rc5

serial: Support the EFR-register of XR1715x uarts.

2011-09-22T22:50:38+00:00

The EFR (Enhenced-Features-Register) is located at a different offset
than the other devices supporting UART_CAP_EFR. This change add a special
setup quick to set UPF_EXAR_EFR on the port. UPF_EXAR_EFR is then used to
the port type to PORT_XR17D15X since it is for sure a XR17D15X uart.

Signed-off-by: Søren Holm 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

tty: serial8250: remove UPIO_DWAPB{,32}

2011-08-23T17:53:00+00:00

Now that platforms can override the port IRQ handler and the only user
of these UPIO modes has been converted over, kill off UPIO_DWAPB and
UPIO_DWAPB32.

Acked-by: Alan Cox 
Signed-off-by: Jamie Iles 
Signed-off-by: Greg Kroah-Hartman

tty: serial: allow ports to override the irq handler

2011-08-23T17:52:58+00:00

Some serial ports may have unusal requirements for interrupt handling
(e.g. the Synopsys DesignWare 8250-alike port and it's busy detect
interrupt).  Add a .handle_irq callback that can be used for platforms
to override the interrupt behaviour in a similar fashion to the
.serial_out and .serial_in callbacks.

Signed-off-by: Jamie Iles 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

TTY: serial, remove tasklet for tty_wakeup

2011-08-23T17:34:06+00:00

tty_wakeup can be called from any context. So there is no need to have
an extra tasklet for calling that. Hence save some space and remove
the tasklet completely.

Signed-off-by: Jiri Slaby 
Cc: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

tty/serial: Add explicit PORT_TEGRA type

2011-05-19T23:51:01+00:00

Tegra's UART is currently auto-detected as PORT_XSCALE due to register
bit UART_IER.UUE being writable. However, the Tegra documentation states
that this register bit is reserved. Hence, we should not program it.

Instead, the documentation specifies that the UART is 16550 compatible.
However, Tegra does need register bit UART_IER.RTOIE set, which is not
enabled by any 16550 port type. This was not noticed before, since
PORT_XSCALE enables CAP_UUE, which conflates both UUE and RTOIE bit
programming.

This change defines PORT_TEGRA that doesn't set UART_CAP_UUE, but does
set UART_CAP_RTOIE, which is a new capability indicating that the RTOIE
bit needs to be enabled.

Based-on-code-by: Laxman Dewangan 
Cc: Laxman Dewangan 
Signed-off-by: Stephen Warren 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

tty/serial: add support for Xilinx PS UART

2011-05-03T17:26:39+00:00

The Xilinx PS Uart is used on the new ARM based SoC. This
UART is not compatible with others such that a seperate
driver is required.

Signed-off-by: John Linn 
Signed-off-by: Greg Kroah-Hartman

pps: unify timestamp gathering

2011-01-13T16:03:19+00:00

Add a helper function to gather timestamps.  This way clients don't have
to duplicate it.

Signed-off-by: Alexander Gordeev 
Acked-by: Rodolfo Giometti 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Serial: Avoid unbalanced IRQ wake disable during resume

2010-12-16T21:14:32+00:00

To avoid unbalanced IRQ wake disable, ensure that wakeups are disabled
only when wakeups have been successfully enabled.
Tested on OMAP3630SDP/ZOOM3.

Signed-off-by: Govindraj.R 
Reported-by: Paul Walmsley 
Cc: Santosh Shilimkar 
Acked-by: Kevin Hilman 
Signed-off-by: Greg Kroah-Hartman

8250: add a UPIO_DWAPB32 for 32 bit accesses

2010-12-10T23:19:38+00:00

Some platforms contain a Synopsys DesignWare APB UART that is attached
to a 32-bit APB bus where sub-word accesses are not allowed. Add a new
IO type (UPIO_DWAPB32) that performs 32 bit acccesses to the UART.

v2:
	- don't test for 32 bit in the output fast path, provide a
	  separate dwabp32_serial_out() function. Refactor
	  dwabp_serial_out() so that we can reuse the LCR saving
	  code.
v3:
	- rebased on top of "8250: use container_of() instead of
	  casting"

Signed-off-by: Jamie Iles 
Signed-off-by: Greg Kroah-Hartman

serial: mpc52xx: make printout for type more generic

2010-11-16T20:50:18+00:00

The printout for the type should be just "5xxx", so 512x users won't
wonder why they have a mpc52xx-type UART.

Signed-off-by: Wolfram Sang 
Cc: Grant Likely 
Cc: Greg Kroah-Hartman 
Signed-off-by: Greg Kroah-Hartman