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authorGovindraj.R <govindraj.raja@ti.com>2011-10-11 19:11:27 +0530
committerKevin Hilman <khilman@ti.com>2011-12-14 16:05:22 -0800
commitec3bebc6ec64aac23500e6b8ef5c0aaaeda735cf (patch)
tree8d47117285aecdb37e65f1fc72b3070f45444433 /arch/arm/plat-omap
parent32212897eeb8c2b2b3c74dbd44d842963084d808 (diff)
ARM: OMAP2+: UART: Get context loss count to context restore
Avoid unconditional context restore every time we gate uart clocks. Check whether context loss happened based on which we can context restore uart regs from uart_port structure. 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>
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r--arch/arm/plat-omap/include/plat/omap-serial.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h
index 5b913c71cd7..348c9ead6ed 100644
--- a/arch/arm/plat-omap/include/plat/omap-serial.h
+++ b/arch/arm/plat-omap/include/plat/omap-serial.h
@@ -62,6 +62,8 @@ struct omap_uart_port_info {
bool dma_enabled; /* To specify DMA Mode */
unsigned int uartclk; /* UART clock rate */
upf_t flags; /* UPF_* flags */
+
+ int (*get_context_loss_count)(struct device *);
};
struct uart_omap_dma {
@@ -114,6 +116,7 @@ struct uart_omap_port {
unsigned char msr_saved_flags;
char name[20];
unsigned long port_activity;
+ u32 context_loss_cnt;
};
#endif /* __OMAP_SERIAL_H__ */