From: Prathamesh Shete <pshete@nvidia.com>
Date: Tue, 17 Feb 2026 08:14:30 +0000 (+0000)
Subject: gpio: tegra186: Simplify GPIO line name prefix handling
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2423e336d94868f0d2fcd81a87b90c5ea59736e0;p=thirdparty%2Fkernel%2Flinux.git

gpio: tegra186: Simplify GPIO line name prefix handling

Introduce TEGRA_GPIO_PREFIX() to define the Tegra SoC GPIO name
prefix in one place. Use it for the Tegra410 COMPUTE and SYSTEM
controllers so the prefix is "COMPUTE-" and "SYSTEM-" respectively.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260217081431.1208351-1-pshete@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
---

diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c
index 9c874f07be755..f04cc240b5ec5 100644
--- a/drivers/gpio/gpio-tegra186.c
+++ b/drivers/gpio/gpio-tegra186.c
@@ -942,12 +942,8 @@ static int tegra186_gpio_probe(struct platform_device *pdev)
 		char *name;
 
 		for (j = 0; j < port->pins; j++) {
-			if (gpio->soc->prefix)
-				name = devm_kasprintf(gpio->gpio.parent, GFP_KERNEL, "%s-P%s.%02x",
-						      gpio->soc->prefix, port->name, j);
-			else
-				name = devm_kasprintf(gpio->gpio.parent, GFP_KERNEL, "P%s.%02x",
-						      port->name, j);
+			name = devm_kasprintf(gpio->gpio.parent, GFP_KERNEL, "%sP%s.%02x",
+					      gpio->soc->prefix ?: "", port->name, j);
 			if (!name)
 				return -ENOMEM;
 
@@ -1373,6 +1369,9 @@ static const struct tegra_gpio_soc tegra256_main_soc = {
 	.has_vm_support = true,
 };
 
+/* Macro to define GPIO name prefix with separator */
+#define TEGRA_GPIO_PREFIX(_x)	_x "-"
+
 #define TEGRA410_COMPUTE_GPIO_PORT(_name, _bank, _port, _pins)	\
 	TEGRA_GPIO_PORT(TEGRA410_COMPUTE, _name, _bank, _port, _pins)
 
@@ -1388,7 +1387,7 @@ static const struct tegra_gpio_soc tegra410_compute_soc = {
 	.num_ports = ARRAY_SIZE(tegra410_compute_ports),
 	.ports = tegra410_compute_ports,
 	.name = "tegra410-gpio-compute",
-	.prefix = "COMPUTE",
+	.prefix = TEGRA_GPIO_PREFIX("COMPUTE"),
 	.num_irqs_per_bank = 8,
 	.instance = 0,
 };
@@ -1418,7 +1417,7 @@ static const struct tegra_gpio_soc tegra410_system_soc = {
 	.num_ports = ARRAY_SIZE(tegra410_system_ports),
 	.ports = tegra410_system_ports,
 	.name = "tegra410-gpio-system",
-	.prefix = "SYSTEM",
+	.prefix = TEGRA_GPIO_PREFIX("SYSTEM"),
 	.num_irqs_per_bank = 8,
 	.instance = 0,
 };