Fix RUTX modems

root/target/linux/ipq40xx/base-files/bin/board_track

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+. /lib/functions/uci-defaults.sh
+
+CFG=/etc/board.json
+SLP=30
+
+check_modem() {
+	json_select "$2"
+	json_get_vars id
+
+	[ -z "$id" ] && {
+		json_select ..
+		return 0
+	}
+
+	logger -t "board-track" "ls -d /sys/bus/usb/devices/$id/${id}*/tty?*"
+	ttys=$(ls -d /sys/bus/usb/devices/$id/${id}*/tty?*)
+
+	[ -n "$ttys" ] || { #FAILED TO FIND MODEM
+		logger -t "board-track" "modem $id not detected"
+		for m in /sys/class/gpio/modem*_power; do
+			label="$(basename $m | awk -F_ '{print $1}')"
+			mctl -s -m ${label}
+			sleep 1
+			mctl -p -m ${label}
+		done
+		json_select ..
+		return 1
+	}
+
+	#MODEM UP
+	json_select ..
+}
+
+board_config_update
+while true; do
+	json_for_each_item check_modem modems
+	sleep $SLP
+	[ $SLP -lt 300 ] && SLP=$((SLP+30))
+done

root/target/linux/ipq40xx/base-files/etc/init.d/modem_tracker

@@ -0,0 +1,33 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2021 Teltonika Networks
+
+START=96
+
+USE_PROCD=1
+
+PROG=/bin/board_track
+NAME=board_track
+PIDCOUNT=1
+
+start_service() {
+	local pid_file="/var/run/${NAME}.${PIDCOUNT}.pid"
+
+	procd_open_instance
+	procd_set_param command "$PROG"
+	procd_set_param file /etc/config/system
+
+	procd_set_param respawn
+
+	procd_set_param stdout 1
+	procd_set_param pidfile $pid_file
+	procd_close_instance
+}
+
+reload_service() {
+	stop
+	start
+}
+
+service_triggers() {
+	procd_add_reload_trigger "system"
+}

root/target/linux/ipq40xx/patches-5.4/100-GPIO-add-named-gpio-exports.patch

@@ -0,0 +1,165 @@
+From 4267880319bc1a2270d352e0ded6d6386242a7ef Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Tue, 12 Aug 2014 20:49:27 +0200
+Subject: [PATCH 24/53] GPIO: add named gpio exports
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/gpio/gpiolib-of.c     |   68 +++++++++++++++++++++++++++++++++++++++++
+ drivers/gpio/gpiolib-sysfs.c  |   10 +++++-
+ include/asm-generic/gpio.h    |    6 ++++
+ include/linux/gpio/consumer.h |    8 +++++
+ 4 files changed, 91 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpio/gpiolib-of.c
++++ b/drivers/gpio/gpiolib-of.c
+@@ -19,6 +19,8 @@
+ #include <linux/pinctrl/pinctrl.h>
+ #include <linux/slab.h>
+ #include <linux/gpio/machine.h>
++#include <linux/init.h>
++#include <linux/platform_device.h>
+ 
+ #include "gpiolib.h"
+ #include "gpiolib-of.h"
+@@ -915,3 +917,68 @@ void of_gpiochip_remove(struct gpio_chip
+ {
+ 	of_node_put(chip->of_node);
+ }
++
++static struct of_device_id gpio_export_ids[] = {
++	{ .compatible = "gpio-export" },
++	{ /* sentinel */ }
++};
++
++static int of_gpio_export_probe(struct platform_device *pdev)
++{
++	struct device_node *np = pdev->dev.of_node;
++	struct device_node *cnp;
++	u32 val;
++	int nb = 0;
++
++	for_each_child_of_node(np, cnp) {
++		const char *name = NULL;
++		int gpio;
++		bool dmc;
++		int max_gpio = 1;
++		int i;
++
++		of_property_read_string(cnp, "gpio-export,name", &name);
++
++		if (!name)
++			max_gpio = of_gpio_count(cnp);
++
++		for (i = 0; i < max_gpio; i++) {
++			unsigned flags = 0;
++			enum of_gpio_flags of_flags;
++
++			gpio = of_get_gpio_flags(cnp, i, &of_flags);
++			if (!gpio_is_valid(gpio))
++				return gpio;
++
++			if (of_flags == OF_GPIO_ACTIVE_LOW)
++				flags |= GPIOF_ACTIVE_LOW;
++
++			if (!of_property_read_u32(cnp, "gpio-export,output", &val))
++				flags |= val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
++			else
++				flags |= GPIOF_IN;
++
++			if (devm_gpio_request_one(&pdev->dev, gpio, flags, name ? name : of_node_full_name(np)))
++				continue;
++
++			dmc = of_property_read_bool(cnp, "gpio-export,direction_may_change");
++			gpio_export_with_name(gpio, dmc, name);
++			nb++;
++		}
++	}
++
++	dev_info(&pdev->dev, "%d gpio(s) exported\n", nb);
++
++	return 0;
++}
++
++static struct platform_driver gpio_export_driver = {
++	.driver		= {
++		.name		= "gpio-export",
++		.owner	= THIS_MODULE,
++		.of_match_table	= of_match_ptr(gpio_export_ids),
++	},
++	.probe		= of_gpio_export_probe,
++};
++
++module_platform_driver(gpio_export_driver);
+--- a/drivers/gpio/gpiolib-sysfs.c
++++ b/drivers/gpio/gpiolib-sysfs.c
+@@ -571,7 +571,7 @@ static struct class gpio_class = {
+  *
+  * Returns zero on success, else an error.
+  */
+-int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
++int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name)
+ {
+ 	struct gpio_chip	*chip;
+ 	struct gpio_device	*gdev;
+@@ -633,6 +633,8 @@ int gpiod_export(struct gpio_desc *desc,
+ 	offset = gpio_chip_hwgpio(desc);
+ 	if (chip->names && chip->names[offset])
+ 		ioname = chip->names[offset];
++	if (name)
++		ioname = name;
+ 
+ 	dev = device_create_with_groups(&gpio_class, &gdev->dev,
+ 					MKDEV(0, 0), data, gpio_groups,
+@@ -654,6 +656,12 @@ err_unlock:
+ 	gpiod_dbg(desc, "%s: status %d\n", __func__, status);
+ 	return status;
+ }
++EXPORT_SYMBOL_GPL(__gpiod_export);
++
++int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
++{
++	return __gpiod_export(desc, direction_may_change, NULL);
++}
+ EXPORT_SYMBOL_GPL(gpiod_export);
+ 
+ static int match_export(struct device *dev, const void *desc)
+--- a/include/asm-generic/gpio.h
++++ b/include/asm-generic/gpio.h
+@@ -127,6 +127,12 @@ static inline int gpio_export(unsigned g
+ 	return gpiod_export(gpio_to_desc(gpio), direction_may_change);
+ }
+ 
++int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
++static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, const char *name)
++{
++	return __gpiod_export(gpio_to_desc(gpio), direction_may_change, name);
++}
++
+ static inline int gpio_export_link(struct device *dev, const char *name,
+ 				   unsigned gpio)
+ {
+--- a/include/linux/gpio/consumer.h
++++ b/include/linux/gpio/consumer.h
+@@ -668,6 +668,7 @@ static inline void devm_acpi_dev_remove_
+ 
+ #if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
+ 
++int _gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
+ int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
+ int gpiod_export_link(struct device *dev, const char *name,
+ 		      struct gpio_desc *desc);
+@@ -675,6 +676,13 @@ void gpiod_unexport(struct gpio_desc *de
+ 
+ #else  /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */
+ 
++static inline int _gpiod_export(struct gpio_desc *desc,
++			       bool direction_may_change,
++			       const char *name)
++{
++	return -ENOSYS;
++}
++
+ static inline int gpiod_export(struct gpio_desc *desc,
+ 			       bool direction_may_change)
+ {

root/target/linux/ipq40xx/patches-5.4/719-meiglink_slm750_support.patch

@@ -0,0 +1,35 @@
+Index: linux-5.4.137/drivers/usb/serial/option.c
+===================================================================
+--- linux-5.4.137.orig/drivers/usb/serial/option.c
++++ linux-5.4.137/drivers/usb/serial/option.c
+@@ -241,6 +241,8 @@ static void option_instat_callback(struc
+ #define UBLOX_PRODUCT_R6XX			0x90fa
+ /* These Yuga products use Qualcomm's vendor ID */
+ #define YUGA_PRODUCT_CLM920_NC5			0x9625
++/* These Meiglink products use Qualcomm's vendor ID */
++#define MEIGLINK_PRODUCT_SLM750			0xf601
+ 
+ #define QUECTEL_VENDOR_ID			0x2c7c
+ /* These Quectel products use Quectel's vendor ID */
+@@ -1102,6 +1104,9 @@ static const struct usb_device_id option
+ 	/* u-blox products using Qualcomm vendor ID */
+ 	{ USB_DEVICE(QUALCOMM_VENDOR_ID, UBLOX_PRODUCT_R410M),
+ 	  .driver_info = RSVD(1) | RSVD(3) },
++	/* Meiglink products using Qualcomm vendor ID */
++	// Works OK in case of some issues check macros that are used by Quectel Products
++	{ USB_DEVICE(QUALCOMM_VENDOR_ID, MEIGLINK_PRODUCT_SLM750)},
+ 	{ USB_DEVICE(QUALCOMM_VENDOR_ID, UBLOX_PRODUCT_R6XX),
+ 	  .driver_info = RSVD(3) },
+ 	/* Quectel products using Quectel vendor ID */
+Index: linux-5.4.137/drivers/net/usb/qmi_wwan.c
+===================================================================
+--- linux-5.4.137.orig/drivers/net/usb/qmi_wwan.c
++++ linux-5.4.137/drivers/net/usb/qmi_wwan.c
+@@ -1171,6 +1171,7 @@ static const struct usb_device_id produc
+ 	{QMI_FIXED_INTF(0x05c6, 0x9079, 6)},
+ 	{QMI_FIXED_INTF(0x05c6, 0x9079, 7)},
+ 	{QMI_FIXED_INTF(0x05c6, 0x9079, 8)},
++	{QMI_MATCH_FF_FF_FF(0x05c6, 0xf601)}, 	/* Meiglink SLM750 (in case of issues check if DTR flag setting is enough) */
+ 	{QMI_FIXED_INTF(0x05c6, 0x9080, 5)},
+ 	{QMI_FIXED_INTF(0x05c6, 0x9080, 6)},
+ 	{QMI_FIXED_INTF(0x05c6, 0x9080, 7)},