From c92cc6b5703cd85497011d2221f008372921b192 Mon Sep 17 00:00:00 2001
From: Antonio Borneo <borneo.antonio@gmail.com>
Date: Sun, 7 Apr 2024 21:15:48 +0200
Subject: [PATCH] jtag: linuxgpiod: use libgpiod v2 API for
 gpiod_line_request()

Work in progress. Target is to replace v1 gpiod_line_request()

Define and use dummy functions from v2 for v1:
- gpiod_line_config_new(),
- gpiod_line_config_free(),

Not yet used:
- gpiod_line_config_add_line_settings(),
- gpiod_chip_request_lines().

Change-Id: I9e2d3013845c5d12942f5e07c9721fcd151d6840
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8207
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
---
 src/jtag/drivers/linuxgpiod.c | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/jtag/drivers/linuxgpiod.c b/src/jtag/drivers/linuxgpiod.c
index 4369175f7..f5d2cf457 100644
--- a/src/jtag/drivers/linuxgpiod.c
+++ b/src/jtag/drivers/linuxgpiod.c
@@ -49,6 +49,11 @@ struct gpiod_line_settings {
 	int active_low;
 };
 
+struct gpiod_line_config {
+	unsigned int gpio_num;
+	struct gpiod_line_settings *line_settings;
+};
+
 static struct gpiod_line_settings *gpiod_line_settings_new(void)
 {
 	static struct gpiod_line_settings my;
@@ -58,6 +63,15 @@ static struct gpiod_line_settings *gpiod_line_settings_new(void)
 	return &my;
 }
 
+static struct gpiod_line_config *gpiod_line_config_new(void)
+{
+	static struct gpiod_line_config my;
+
+	my = (struct gpiod_line_config) { 0 };
+
+	return &my;
+}
+
 static struct gpiod_request_config *gpiod_request_config_new(void)
 {
 	static struct gpiod_request_config my;
@@ -71,6 +85,10 @@ static void gpiod_line_settings_free(struct gpiod_line_settings *settings)
 {
 }
 
+static void gpiod_line_config_free(struct gpiod_line_config *config)
+{
+}
+
 static void gpiod_request_config_free(struct gpiod_request_config *config)
 {
 }
@@ -415,9 +433,10 @@ static int helper_get_line(enum adapter_gpio_config_index idx)
 	}
 
 	struct gpiod_line_settings *line_settings = gpiod_line_settings_new();
+	struct gpiod_line_config *line_config = gpiod_line_config_new();
 	struct gpiod_request_config *req_cfg = gpiod_request_config_new();
 
-	if (!line_settings || !req_cfg) {
+	if (!line_settings || !line_config || !req_cfg) {
 		LOG_ERROR("Cannot configure LinuxGPIOD line for %s", adapter_gpio_get_name(idx));
 		retval = ERROR_JTAG_INIT_FAILED;
 		goto err_out;
@@ -479,6 +498,7 @@ static int helper_get_line(enum adapter_gpio_config_index idx)
 
 err_out:
 	gpiod_line_settings_free(line_settings);
+	gpiod_line_config_free(line_config);
 	gpiod_request_config_free(req_cfg);
 
 	return retval;