pinctrl: stm32: Allow compile as module for stm32mp257

Add ability to build pinctrl for stm32mp257 as a kernel module.
Add kernel-doc to the exported symbols.

Signed-off-by: Stephane Danieau <stephane.danieau@foss.st.com>
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
Link: https://lore.kernel.org/20250610143042.295376-5-antonio.borneo@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index a541bb029aa4e1bee095ab3f44e3a52294905616..d6cfcfad26e47ade5ff738f5132724981b46700c 100644 (file)
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -311,7 +311,6 @@ config ARCH_STM32
        bool "STMicroelectronics STM32 SoC Family"
        select GPIOLIB
        select PINCTRL
-       select PINCTRL_STM32MP257
        select ARM_SMC_MBOX
        select ARM_SCMI_PROTOCOL
        select REGULATOR

diff --git a/drivers/pinctrl/stm32/Kconfig b/drivers/pinctrl/stm32/Kconfig
index 2656d3d3ae4025507765c54079ef6894ef5628c0..297a2f088bc1f7946b1932f2c6ecdb360be1a3c0 100644 (file)
--- a/drivers/pinctrl/stm32/Kconfig
+++ b/drivers/pinctrl/stm32/Kconfig
@@ -2,7 +2,7 @@
 if ARCH_STM32 || COMPILE_TEST
 
 config PINCTRL_STM32
-       bool
+       tristate
        depends on OF
        select PINMUX
        select GENERIC_PINCONF
@@ -53,8 +53,8 @@ config PINCTRL_STM32MP157
        select PINCTRL_STM32
 
 config PINCTRL_STM32MP257
-       bool "STMicroelectronics STM32MP257 pin control" if COMPILE_TEST && !MACH_STM32MP25
+       tristate "STMicroelectronics STM32MP257 pin control"
        depends on OF && HAS_IOMEM
-       default MACH_STM32MP25
+       default MACH_STM32MP25 || (ARCH_STM32 && ARM64)
        select PINCTRL_STM32
 endif

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index e7621f9b0005615b8af5b2d76e7dc2ce70091f54..ce2a5fee423037f483fa720adffa3dcb6213d072 100644 (file)
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -8,6 +8,7 @@
  */
 #include <linux/bitfield.h>
 #include <linux/clk.h>
+#include <linux/export.h>
 #include <linux/gpio/driver.h>
 #include <linux/hwspinlock.h>
 #include <linux/io.h>
@@ -1785,6 +1786,7 @@ err_register:
        clk_bulk_disable_unprepare(banks, pctl->clks);
        return ret;
 }
+EXPORT_SYMBOL(stm32_pctl_probe);
 
 static int __maybe_unused stm32_pinctrl_restore_gpio_regs(
                                        struct stm32_pinctrl *pctl, u32 pin)
@@ -1857,6 +1859,7 @@ int __maybe_unused stm32_pinctrl_suspend(struct device *dev)
 
        return 0;
 }
+EXPORT_SYMBOL(stm32_pinctrl_suspend);
 
 int __maybe_unused stm32_pinctrl_resume(struct device *dev)
 {
@@ -1873,3 +1876,8 @@ int __maybe_unused stm32_pinctrl_resume(struct device *dev)
 
        return 0;
 }
+EXPORT_SYMBOL(stm32_pinctrl_resume);
+
+MODULE_AUTHOR("Alexandre Torgue <alexandre.torgue@foss.st.com>");
+MODULE_DESCRIPTION("STM32 core pinctrl driver");
+MODULE_LICENSE("GPL");

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.h b/drivers/pinctrl/stm32/pinctrl-stm32.h
index ed525f5bdd7cd151959e37466abac2e506b6bbf0..9e44ad8c35b3500ff39e8d2c41e8a51d127c637b 100644 (file)
--- a/drivers/pinctrl/stm32/pinctrl-stm32.h
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.h
@@ -66,8 +66,22 @@ struct stm32_pinctrl_match_data {
        bool rif_control;
 };
 
+/**
+ * stm32_pctl_probe() - Common probe for stm32 pinctrl drivers.
+ * @pdev: Pinctrl platform device.
+ */
 int stm32_pctl_probe(struct platform_device *pdev);
+
+/**
+ * stm32_pinctrl_suspend() - Common suspend for stm32 pinctrl drivers.
+ * @dev: Pinctrl device.
+ */
 int stm32_pinctrl_suspend(struct device *dev);
+
+/**
+ * stm32_pinctrl_resume() - Common resume for stm32 pinctrl drivers.
+ * @dev: Pinctrl device.
+ */
 int stm32_pinctrl_resume(struct device *dev);
 
 #endif /* __PINCTRL_STM32_H */

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32mp257.c b/drivers/pinctrl/stm32/pinctrl-stm32mp257.c
index 984587207956a527d51d66ff25e6debe8557cefe..d226de524bfc1bc10f9a0d402ccda0cbcd91c6eb 100644 (file)
--- a/drivers/pinctrl/stm32/pinctrl-stm32mp257.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32mp257.c
@@ -4,6 +4,7 @@
  * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
  */
 #include <linux/init.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 
@@ -2564,6 +2565,7 @@ static const struct of_device_id stm32mp257_pctrl_match[] = {
        },
        { }
 };
+MODULE_DEVICE_TABLE(of, stm32mp257_pctrl_match);
 
 static const struct dev_pm_ops stm32_pinctrl_dev_pm_ops = {
         SET_LATE_SYSTEM_SLEEP_PM_OPS(stm32_pinctrl_suspend, stm32_pinctrl_resume)
@@ -2577,9 +2579,8 @@ static struct platform_driver stm32mp257_pinctrl_driver = {
                .pm = &stm32_pinctrl_dev_pm_ops,
        },
 };
+module_platform_driver(stm32mp257_pinctrl_driver);
 
-static int __init stm32mp257_pinctrl_init(void)
-{
-       return platform_driver_register(&stm32mp257_pinctrl_driver);
-}
-arch_initcall(stm32mp257_pinctrl_init);
+MODULE_AUTHOR("Alexandre Torgue <alexandre.torgue@foss.st.com>");
+MODULE_DESCRIPTION("STM32MP257 pinctrl driver");
+MODULE_LICENSE("GPL");