From d722587f807c1d8233438bcbf24b1a428f6edb38 Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Fri, 18 Feb 2022 18:04:20 -0600
Subject: version 2.0 mtac-mfser is based on version 1.1.1

---
 AUTHORS      |   3 +-
 README       |  10 +++++
 mtac_mfser.c | 134 ++++++++++++++++++++++++++++++++++++-----------------------
 3 files changed, 94 insertions(+), 53 deletions(-)

diff --git a/AUTHORS b/AUTHORS
index f8e3fb5..d338ebe 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,2 +1 @@
-James Maki <jmaki@multitech.com>
-John Klug <john.klug@multitech.com>
+Multi-Tech <info@multitech.com>
diff --git a/README b/README
index 4a58590..08a6cb8 100644
--- a/README
+++ b/README
@@ -14,3 +14,13 @@ An init script can look in:
 /lib/modules/$(uname -r)/extra/mtac_mfser.ko
 
 to find the driver.
+
+
+The mtac-mfser v2.0.0 driver is based on v1.1.1,
+with the legacy kernel gpio library replaced
+with gpiod.
+
+The 1.2.0 driver was created for the new
+MTCDT-0.2, and the design was overly
+complex, also based on the legacy gpio
+library.
diff --git a/mtac_mfser.c b/mtac_mfser.c
index b8b163c..c38cb1e 100644
--- a/mtac_mfser.c
+++ b/mtac_mfser.c
@@ -1,10 +1,9 @@
-#define DRIVER_VERSION  "v1.2.0"
+#define DRIVER_VERSION  "v2.0.0"
 #define DRIVER_AUTHOR   "Multi-Tech"
 #define DRIVER_DESC "MTS Multi-Fuction Serial Accessory Card"
 #define DRIVER_NAME "mtac-mfser"
 
 #include <linux/types.h>
-#include <linux/gpio.h>
 #include <linux/platform_device.h>
 #include <linux/kmod.h>
 #include <linux/bitops.h>
@@ -12,45 +11,87 @@
 #include <linux/slab.h>
 #include <linux/mtac.h>
 #include <linux/mts_io.h>
-#include <linux/mts_io_module.h>
+#include <linux/gpio/consumer.h>
 
-#include <linux/mtac.h>
-#include <linux/mtac_pin_defs.h>
-
-#ifdef TI43X
-#include <linux/ti43x_gpio.h>
-#endif
-#ifdef SAM9G25
-#include <linux/sam9g25_gpio.h>
-#endif
-
-static struct gpio_pin gpio_pins_mtcdt_mtac_mfser[] = {
-	// gpio pins for Accessory Card 1
-	AP1_GPIO1,
-	AP1_GPIO2,
-	AP1_GPIO3,
-	AP1_GPIO4,
-
-	// gpio pins for Accessory Card 2
-	AP2_GPIO1,
-	AP2_GPIO2,
-	AP2_GPIO3,
-	AP2_GPIO4,
-	{ },
-};
-
-static struct gpio_pin gpio_pins_mtcdt_0_2_mtac_mfser[] = {
+static struct gpio_pin gpio_pins_mtac_mfser[] = {
 	// gpio pins for Accessory Card 1
-	AP1_GPIO1,
-	AP1_GPIO2,
-	AP1_GPIO3_MTCDT0_2,
-	AP1_GPIO4_MTCDT0_2,
+	{
+		.name = "AP1_GPIO1",
+		.pin = {
+			.gpio = ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap1-gpio1",
+		},
+		.active_low = 1,
+                .do_gpio_desc = 1,
+	},
+	{
+		.name = "AP1_GPIO2",
+		.pin = {
+			.gpio =  ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap1-gpio2",
+		},
+                .do_gpio_desc = 1,
+        },
+	{
+		.name = "AP1_GPIO3",
+		.pin = {
+			.gpio =  ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap1-gpio3",
+		},
+                .do_gpio_desc = 1,
+	},
+	{
+		.name = "AP1_GPIO4",
+		.pin = {
+			.gpio =  ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap1-gpio4",
+		},
+                .do_gpio_desc = 1,
+	},
+	
 
 	// gpio pins for Accessory Card 2
-	AP2_GPIO1,
-	AP2_GPIO2,
-	AP2_GPIO3_MTCDT0_2,
-	AP2_GPIO4_MTCDT0_2,
+	{
+		.name = "AP2_GPIO1",
+		.pin = {
+			.gpio =  ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap2-gpio1",
+		},
+		.active_low = 1,
+                .do_gpio_desc = 1,
+	},
+	{
+		.name = "AP2_GPIO2",
+		.pin = {
+			.gpio = ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap2-gpio2",
+		},
+                .do_gpio_desc = 1,
+	},
+	{
+		.name = "AP2_GPIO3",
+		.pin = {
+			.gpio = ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap2-gpio3",
+		},
+                .do_gpio_desc = 1,
+	},
+	{
+		.name = "AP2_GPIO4",
+		.pin = {
+			.gpio = ~0U,
+			.flags = GPIOD_OUT_LOW,
+			.label = "ap2-gpio4",
+		},
+                .do_gpio_desc = 1,
+	},
 	{ },
 };
 
@@ -120,8 +161,8 @@ static ssize_t mts_attr_show_mfser_mode(struct kobject *kobj,
 
 	mutex_lock(&mtac_mutex);
 
-	modesel0 = gpio_get_value(pin_modesel0->pin.gpio);
-	modesel1 = gpio_get_value(pin_modesel1->pin.gpio);
+	modesel0 = gpiod_get_value(pin_modesel0->desc);
+	modesel1 = gpiod_get_value(pin_modesel1->desc);
 
 	if (modesel1 == 0 && modesel0 == 0)
 		ret = sprintf(buf, "loopback\n");
@@ -197,8 +238,8 @@ static ssize_t mts_attr_store_mfser_mode(struct kobject *kobj,
 
 	mutex_lock(&mtac_mutex);
 
-	gpio_set_value(pin_modesel0->pin.gpio, modesel0);
-	gpio_set_value(pin_modesel1->pin.gpio, modesel1);
+	gpiod_set_value(pin_modesel0->desc, modesel0);
+	gpiod_set_value(pin_modesel1->desc, modesel1);
 
 	mutex_unlock(&mtac_mutex);
 
@@ -225,7 +266,6 @@ static bool mfser_setup(enum ap port) {
 	struct kobj_attribute* attr;
 	struct attribute **attrs;
 	struct kobject *subdir;
-	char *tmp, *hw_version;
 
 	log_info("loading MFSER accessory card in port %d", port);
 
@@ -236,15 +276,7 @@ static bool mfser_setup(enum ap port) {
 		return false;
 	}
 
-	hw_version = mts_get_hw_version();
-	if ((tmp=HW_VERSION_MTCDT_0_2),strncmp(hw_version, tmp, strlen(tmp)) == 0){
-		log_info("MTCDT-0.2 detected");
-		mtac_set_port_pins(port_index,gpio_pins_mtcdt_0_2_mtac_mfser,subdir);
-	}
-	else {
-		log_info("%s detected, MTCDT pinout used", hw_version);
-		mtac_set_port_pins(port_index,gpio_pins_mtcdt_mtac_mfser,subdir);
-	};
+	mtac_set_port_pins(port_index,gpio_pins_mtac_mfser,subdir);
 
 	// create the link to the apX directory this card is in
 	// if we're in the first slot, we get plain "mfser"
-- 
cgit v1.2.3