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authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2017-01-11 17:43:38 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-19 16:17:05 +0300
commitd5cb1319a91d4f1328b1c70b82c5899acd96af85 (patch)
tree8c23abe671f3f4e1b43e2eff2e99f9bf5b26dad7 /include/linux/serial_sci.h
parent219fb0c1436e4893a290ba270bc0e644d02465a3 (diff)
downloadlinux-d5cb1319a91d4f1328b1c70b82c5899acd96af85.tar.xz
serial: sh-sci: Remove manual break debouncing
The sh-sci driver implements manual break debouncing for a few SH platforms by reading the value of the RX pin port register. This feature is optional and the driver considers all negative or zero values of the platform data port_reg field as invalid. As the four platforms that set the field to a register address all use an address higher than 0x7fffffff, the driver will always consider the value as invalid and never perform debouncing. The feature is unused, remove it. Debouncing could be implemented properly in the future using the pinctrl and GPIO APIs if desired. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_sci.h')
-rw-r--r--include/linux/serial_sci.h5
1 files changed, 0 insertions, 5 deletions
diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index 1a894c47bfc0..b4419931bf4c 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -9,8 +9,6 @@
* Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts)
*/
-#define SCIx_NOT_SUPPORTED (-1)
-
/* Serial Control Register (@ = not supported by all parts) */
#define SCSCR_TIE BIT(7) /* Transmit Interrupt Enable */
#define SCSCR_RIE BIT(6) /* Receive Interrupt Enable */
@@ -41,8 +39,6 @@ enum {
SCIx_NR_REGTYPES,
};
-struct device;
-
struct plat_sci_port_ops {
void (*init_pins)(struct uart_port *, unsigned int cflag);
};
@@ -66,7 +62,6 @@ struct plat_sci_port {
/*
* Platform overrides if necessary, defaults otherwise.
*/
- int port_reg;
unsigned char regshift;
unsigned char regtype;