FROMGIT: tty: serial: msm_geni_serial: Add serial driver support for …

…GENI based QUP

This driver supports GENI based UART Controller in the Qualcomm SOCs. The
Qualcomm Generic Interface (GENI) is a programmable module supporting a
wide range of serial interfaces including UART. This driver support console
operations using FIFO mode of transfer.

Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Doug Anderson <dianders@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

BUG=chromium:795746, b:74201089
TEST=Boot to ramdisk
CQ-DEPEND=CL:I75d8358d961e25933111b3df7a596b597657fb8a

Change-Id: I3660809b43e56be24c703cf4c5b6a587ff057169
Signed-off-by: Douglas Anderson <dianders@chromium.org>
(cherry picked from commit c4f5287
 git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-next)
Reviewed-on: https://chromium-review.googlesource.com/944058

drivers/tty/serial/Kconfig

@@ -1098,6 +1098,21 @@ config SERIAL_MSM_CONSOLE
 	select SERIAL_CORE_CONSOLE
 	select SERIAL_EARLYCON
 
+config SERIAL_QCOM_GENI
+	tristate "QCOM on-chip GENI based serial port support"
+	depends on ARCH_QCOM || COMPILE_TEST
+	depends on QCOM_GENI_SE
+	select SERIAL_CORE
+
+config SERIAL_QCOM_GENI_CONSOLE
+	bool "QCOM GENI Serial Console support"
+	depends on SERIAL_QCOM_GENI=y
+	select SERIAL_CORE_CONSOLE
+	select SERIAL_EARLYCON
+	help
+	  Serial console driver for Qualcomm Technologies Inc's GENI based
+	  QUP hardware.
+
 config SERIAL_VT8500
 	bool "VIA VT8500 on-chip serial port support"
 	depends on ARCH_VT8500

drivers/tty/serial/Makefile

@@ -63,6 +63,7 @@ obj-$(CONFIG_SERIAL_SGI_IOC3) += ioc3_serial.o
 obj-$(CONFIG_SERIAL_ATMEL) += atmel_serial.o
 obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o
 obj-$(CONFIG_SERIAL_MSM) += msm_serial.o
+obj-$(CONFIG_SERIAL_QCOM_GENI) += qcom_geni_serial.o
 obj-$(CONFIG_SERIAL_NETX) += netx-serial.o
 obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
 obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o