diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2012-04-11 01:10:53 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-19 02:07:53 +0400 |
| commit | bf03f65b7967df5807ddef7b99f8a41d4c94fc70 (patch) | |
| tree | 558ae56db6ddedae03eee1bc569321d8ab571d0a /include/linux/serial_core.h | |
| parent | 7c77c8decfd14a611ddcba071782a9520e4bb3f8 (diff) | |
| download | linux-bf03f65b7967df5807ddef7b99f8a41d4c94fc70.tar.xz | |
tegra, serial8250: add ->handle_break() uart_port op
The "KT" serial port has another use case for a "received break" quirk,
so before adding another special case to the 8250 core take this
opportunity to push such quirks out of the core and into a uart_port op.
Stephen says:
"If the callback function is to no longer live in 8250.c itself,
arch/arm/mach-tegra/devices.c isn't logically a good place to put it,
and that file will be going away once we get rid of all the board files
and move solely to device tree."
...so since 8250_pci.c houses all the quirks for pci serial devices this
quirk is similarly housed in of_serial.c. Once the open firmware
conversion completes the infrastructure details
(include/linux/of_serial.h, and the export) can all be removed to make
this self contained to of_serial.c.
Cc: Nhan H Mai <nhan.h.mai@intel.com>
Cc: Colin Cross <ccross@android.com>
Cc: Olof Johansson <olof@lixom.net>
[stephen: kill CONFIG_SERIAL_TEGRA in favor just using CONFIG_ARCH_TEGRA]
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sudhakar Mamillapalli <sudhakar@fb.com>
Reported-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index f51bf2e70c69..0dd752f3039d 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -310,6 +310,7 @@ struct uart_port { int (*handle_irq)(struct uart_port *); void (*pm)(struct uart_port *, unsigned int state, unsigned int old); + void (*handle_break)(struct uart_port *); unsigned int irq; /* irq number */ unsigned long irqflags; /* irq flags */ unsigned int uartclk; /* base uart clock */ @@ -533,6 +534,10 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch) static inline int uart_handle_break(struct uart_port *port) { struct uart_state *state = port->state; + + if (port->handle_break) + port->handle_break(port); + #ifdef SUPPORT_SYSRQ if (port->cons && port->cons->index == port->line) { if (!port->sysrq) { |