ARM: OMAP2+: UART: Cleanup part of clock gating mechanism for uart

Currently we use a shared irq handler to identify uart activity and then
trigger a timer. By default the timeout value is zero and can be set or
modified from sysfs. If there was no uart activity for the period set
through sysfs, the timer will expire and call timer handler this will
set a flag can_sleep using which decision to gate uart clocks can be taken.

Since the clock gating mechanism is outside the uart driver, we currently
use this mechanism. In preparation to runtime implementation for omap-serial
driver we can cleanup this mechanism and use runtime API's to gate uart clocks.

Removes the following:
* timer related info from local uart_state struct
* the code used to set timeout value from sysfs.
* irqflags used to set shared irq handler.
* un-used function omap_uart_check_wakeup.

Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de> (for drivers/tty changes)
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h
index 2682043f5a5..307cd6f1582 100644
--- a/arch/arm/plat-omap/include/plat/omap-serial.h
+++ b/arch/arm/plat-omap/include/plat/omap-serial.h
@@ -61,7 +61,6 @@ struct omap_uart_port_info {
 	unsigned int		uartclk;	/* UART clock rate */
 	void __iomem		*membase;	/* ioremap cookie or NULL */
 	resource_size_t		mapbase;	/* resource base */
-	unsigned long		irqflags;	/* request_irq flags */
 	upf_t			flags;		/* UPF_* flags */
 };