Commit 9391ab1e authored by Zong Jiang's avatar Zong Jiang Committed by Greg Kroah-Hartman
Browse files

serial: qcom-geni: Make UART port count configurable via Kconfig 



Replace the hardcoded GENI_UART_PORTS macro with a new Kconfig option
SERIAL_QCOM_GENI_UART_PORTS to allow platforms to configure the maximum
number of UART ports supported by the driver at build time.

This improves flexibility for platforms that require more than the
previously fixed number of UART ports, and avoids unnecessary allocation
for unused ports.

Signed-off-by: default avatarZong Jiang <quic_zongjian@quicinc.com>
Link: https://lore.kernel.org/r/20250812054819.3748649-3-quic_zongjian@quicinc.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c3e7966c

drivers/tty/serial/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -928,6 +928,14 @@ config SERIAL_QCOM_GENI_CONSOLE 
	  Serial console driver for Qualcomm Technologies Inc's GENI based

	  QUP hardware.



config SERIAL_QCOM_GENI_UART_PORTS

	int "Maximum number of GENI UART ports"

	depends on SERIAL_QCOM_GENI

	default "8"

	help

	  Set this to the maximum number of serial ports you want the driver

	  to support.



config SERIAL_VT8500

	bool "VIA VT8500 on-chip serial port support"

	depends on ARCH_VT8500 || COMPILE_TEST

drivers/tty/serial/qcom_geni_serial.c

+2 −3
Original line number Diff line number Diff line
@@ -77,7 +77,6 @@ 
#define STALE_TIMEOUT			16

#define DEFAULT_BITS_PER_CHAR		10

#define GENI_UART_CONS_PORTS		1

#define GENI_UART_PORTS			3

#define DEF_FIFO_DEPTH_WORDS		16

#define DEF_TX_WM			2

#define DEF_FIFO_WIDTH_BITS		32
@@ -261,7 +260,7 @@ static const char *qcom_geni_serial_get_type(struct uart_port *uport) 
static struct qcom_geni_serial_port *get_port_from_line(int line, bool console, struct device *dev)

{

	struct qcom_geni_serial_port *port;

	int nr_ports = console ? GENI_UART_CONS_PORTS : GENI_UART_PORTS;

	int nr_ports = console ? GENI_UART_CONS_PORTS : CONFIG_SERIAL_QCOM_GENI_UART_PORTS;



	if (console) {

		if (line < 0 || line >= nr_ports)
@@ -1652,7 +1651,7 @@ static struct uart_driver qcom_geni_uart_driver = { 
	.owner = THIS_MODULE,

	.driver_name = "qcom_geni_uart",

	.dev_name = "ttyHS",

	.nr =  GENI_UART_PORTS,

	.nr = CONFIG_SERIAL_QCOM_GENI_UART_PORTS,

};



static int geni_serial_resources_on(struct uart_port *uport)