From: Simon Glass <sjg@chromium.org>
Date: Sun, 8 Aug 2021 18:20:24 +0000 (-0600)
Subject: gpio: Add a GPIO config
X-Git-Tag: v2025.01-rc5-pxa1908~1694^2~24^2~7
X-Git-Url: http://git.dujemihanovic.xyz/html/static/git-logo.png?a=commitdiff_plain;h=b2f9bac0e703631b12f1e40c1a8b15345923a29a;p=u-boot.git

gpio: Add a GPIO config

At present we have SPL_GPIO and TPL_GPIO but not piain GPIO. This
works because there is a special build rule in Makefile that always
includes the drivers/gpio directory.

It is better to have all driver directories included by drivers/Makefile
and there is already a rule in there for this purpose. It just needs a
Kconfig for U-Boot proper, so add one.

Enable the option always for now, since this mimics current behaviour.
This can be updated once DM_GPIO is used everywhere.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/Makefile b/Makefile
index 27fba9157b..a2f7129794 100644
--- a/Makefile
+++ b/Makefile
@@ -813,7 +813,6 @@ libs-y += fs/
 libs-y += net/
 libs-y += disk/
 libs-y += drivers/
-libs-y += drivers/gpio/
 libs-y += drivers/net/
 libs-y += drivers/net/phy/
 libs-y += drivers/power/ \
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index ab9adbdd6e..afb4c69529 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -2,7 +2,19 @@
 # GPIO infrastructure and drivers
 #
 
-menu "GPIO Support"
+menuconfig GPIO
+	bool "GPIO support"
+	default y
+	help
+	  Enable support for GPIOs (General-purpose Input/Output) in U-Boot.
+	  GPIOs allow U-Boot to read the state of an input line (high or
+	  low) and set the state of an output line. This can be used to
+	  drive LEDs, control power to various system parts and read user
+	  input. GPIOs can be useful to enable a 'sign-of-life' LED,
+	  for example. Enable this option to build the drivers in
+	  drivers/gpio as part of an U-Boot build.
+
+if GPIO
 
 config DM_GPIO
 	bool "Enable Driver Model for GPIO drivers"
@@ -503,4 +515,4 @@ config NOMADIK_GPIO
 	  into a number of banks each with 32 GPIOs. The GPIOs for a device are
 	  defined in the device tree with one node for each bank.
 
-endmenu
+endif