linux-stable.git/drivers/tty/serial/bfin_uart.c, branch linux-3.5.y

serial: bfin_uart: Make MMR access compatible with 32 bits bf609 style controller.

2012-05-17T20:25:56+00:00

Simplify serial data width calculation and adapt to bf609 LCR bit mask.

Signed-off-by: Sonic Zhang 
Signed-off-by: Greg Kroah-Hartman

serial: bfin_uart: RTS and CTS MMRs can be either 16-bit width or 32-bit width.

2012-05-17T20:25:56+00:00

Change hardware flow control code to adapt to both bf5xx and bf60x.
Disabled serial device before set termios for bf60x.

Signed-off-by: Sonic Zhang 
Signed-off-by: Bob Liu 
Signed-off-by: Greg Kroah-Hartman

serial: bfin_uart: narrow the reboot condition in DMA tx interrupt

2012-05-17T20:25:56+00:00

Check if xmit buffer pointers are set to zero.

Signed-off-by: Sonic Zhang 
Signed-off-by: Greg Kroah-Hartman

serial: bfin_uart: Adapt bf5xx serial driver to bf60x serial4 controller.

2012-05-17T20:25:55+00:00

The serial4 controller on bf60x is an enhanced version of serial controller
on bf5xx. MMR size is 32 bits other than 16 bits. MMR GCTL, MCR and LCR are
combined into one control MMR. MSR and LSR are combined into one status MMR.

This patch adapts current bf5xx serial driver to serial4 controller on bf60x.

Signed-off-by: Sonic Zhang 
Signed-off-by: Bob Liu 
Signed-off-by: Greg Kroah-Hartman

serial: bfin-uart: Don't access tty circular buffer in TX DMA interrupt after it is reset.

2012-03-13T21:33:39+00:00

When kernel reboot, tty circular buffer is reset before last TX DMA interrupt is called,
while the buffer tail is updated in TX DMA interrupt handler. So, don't update the buffer
tail if it is reset.

Signed-off-by: Sonic Zhang 
Signed-off-by: Greg Kroah-Hartman

serial: bfin-uart: Remove ASYNC_CTS_FLOW flag for hardware automatic CTS.

2011-12-13T17:50:15+00:00

Blackfin uart supports automatic CTS trigger when hardware flow control is enabled.
No need to start and top tx in CTS interrupt. So, remote ASYNC_CTS_FLOW flag.

Signed-off-by: Sonic Zhang 
Signed-off-by: Greg Kroah-Hartman

serial: bfin-uart: Enable hardware automatic CTS only when CTS pin is available.

2011-12-13T17:50:15+00:00

Signed-off-by: Sonic Zhang 
Signed-off-by: Greg Kroah-Hartman

serial: bfin-uart: remove redundant CTS check for hardware CTS control.

2011-12-10T03:05:32+00:00

Blackfin hardware CTS control generate interrupt for both CTS on and off.

Signed-off-by: Sonic Zhang 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

serial: bfin-uart: Add tty ASYNC_CTS_FLOW flag to do CTS flow control.

2011-12-10T03:05:32+00:00

Signed-off-by: Sonic Zhang 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

serial: bfin-uart: Request CTS GPIO PIN when the serial device starts up.

2011-12-10T03:05:32+00:00

Serial device may be probed earlier before GPIOLIB is initialized. Requesting and
configuring CTS GPIO PIN fails in that early stage. Do it when the serial device
really starts up.

Signed-off-by: Sonic Zhang 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman