On 04/24/2015 02:56 AM, Tony Lindgren wrote:
We currently get all kinds of errors building the omap gpio driver
as a module starting with:
undefined reference to `omap2_gpio_resume_after_idle'
undefined reference to `omap2_gpio_prepare_for_idle'
...
Let's fix the issue by adding inline functions to the header.
Note that we can now also remove the two unused functions for
omap_set_gpio_debounce and omap_set_gpio_debounce_time.
Then doing rmmod on the module produces further warnings
because of missing exit related functions. Let's add those.
And finally, we can make the Kconfig entry just a tristate
option that's selected for omaps.
Reviewed-by: Grygorii Strashko <grygorii.stras...@linaro.org>
boot tested on: dra7-evm with gpio-omap.ko
Cc: Felipe Balbi <ba...@ti.com>
Cc: Javier Martinez Canillas <jav...@dowhile0.org>
Cc: Grygorii Strashko <grygorii.stras...@linaro.org>
Cc: Kevin Hilman <khil...@deeprootsystems.com>
Cc: Nishanth Menon <n...@ti.com>
Cc: Santosh Shilimkar <ssant...@kernel.org>
Signed-off-by: Tony Lindgren <t...@atomide.com>
---
drivers/gpio/Kconfig | 2 +-
drivers/gpio/gpio-omap.c | 24 ++++++++++++++++++++++++
include/linux/platform_data/gpio-omap.h | 12 ++++++++++--
3 files changed, 35 insertions(+), 3 deletions(-)
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index caefe80..ff7df95 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -308,7 +308,7 @@ config GPIO_OCTEON
family of SOCs.
config GPIO_OMAP
- bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
+ tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
default y if ARCH_OMAP
depends on ARM
select GENERIC_IRQ_CHIP
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index b59c3ca..384a852 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1202,6 +1202,17 @@ static int omap_gpio_probe(struct platform_device *pdev)
return 0;
}
+static int omap_gpio_remove(struct platform_device *pdev)
+{
+ struct gpio_bank *bank = platform_get_drvdata(pdev);
+
+ list_del(&bank->node);
+ gpiochip_remove(&bank->chip);
+ pm_runtime_disable(bank->dev);
+
+ return 0;
+}
+
#ifdef CONFIG_ARCH_OMAP2PLUS
#if defined(CONFIG_PM)
@@ -1387,6 +1398,7 @@ static int omap_gpio_runtime_resume(struct device *dev)
}
#endif /* CONFIG_PM */
+#if IS_BUILTIN(CONFIG_GPIO_OMAP)
void omap2_gpio_prepare_for_idle(int pwr_mode)
{
struct gpio_bank *bank;
@@ -1412,6 +1424,7 @@ void omap2_gpio_resume_after_idle(void)
pm_runtime_get_sync(bank->dev);
}
}
+#endif
#if defined(CONFIG_PM)
static void omap_gpio_init_context(struct gpio_bank *p)
@@ -1567,6 +1580,7 @@ MODULE_DEVICE_TABLE(of, omap_gpio_match);
static struct platform_driver omap_gpio_driver = {
.probe = omap_gpio_probe,
+ .remove = omap_gpio_remove,
.driver = {
.name = "omap_gpio",
.pm = &gpio_pm_ops,
@@ -1584,3 +1598,13 @@ static int __init omap_gpio_drv_reg(void)
return platform_driver_register(&omap_gpio_driver);
}
postcore_initcall(omap_gpio_drv_reg);
+
+static void __exit omap_gpio_exit(void)
+{
+ platform_driver_unregister(&omap_gpio_driver);
+}
+module_exit(omap_gpio_exit);
+
+MODULE_DESCRIPTION("omap gpio driver");
+MODULE_ALIAS("platform:gpio-omap");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/platform_data/gpio-omap.h
b/include/linux/platform_data/gpio-omap.h
index 5d50b25..cb26181 100644
--- a/include/linux/platform_data/gpio-omap.h
+++ b/include/linux/platform_data/gpio-omap.h
@@ -208,9 +208,17 @@ struct omap_gpio_platform_data {
int (*get_context_loss_count)(struct device *dev);
};
+#if IS_BUILTIN(CONFIG_GPIO_OMAP)
extern void omap2_gpio_prepare_for_idle(int off_mode);
extern void omap2_gpio_resume_after_idle(void);
-extern void omap_set_gpio_debounce(int gpio, int enable);
-extern void omap_set_gpio_debounce_time(int gpio, int enable);
+#else
+static inline void omap2_gpio_prepare_for_idle(int off_mode)
+{
+}
+
+static inline void omap2_gpio_resume_after_idle(void)
+{
+}
+#endif
#endif
--
regards,
-grygorii
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