Module: xenomai-3
Branch: stable-3.0.x
Commit: a2262d5b85f35df485b726c93783a28336024850
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=a2262d5b85f35df485b726c93783a28336024850
Author: Philippe Gerum <r...@xenomai.org>
Date: Thu Apr 19 10:21:01 2018 +0200
drivers/gpio: core: add OF-based scanner searching for multiple compat strings
---
include/cobalt/kernel/rtdm/gpio.h | 4 ++++
kernel/drivers/gpio/gpio-core.c | 19 +++++++++++++++++++
2 files changed, 23 insertions(+)
diff --git a/include/cobalt/kernel/rtdm/gpio.h
b/include/cobalt/kernel/rtdm/gpio.h
index 378a678..cdb472f 100644
--- a/include/cobalt/kernel/rtdm/gpio.h
+++ b/include/cobalt/kernel/rtdm/gpio.h
@@ -65,6 +65,10 @@ int rtdm_gpiochip_post_event(struct rtdm_gpio_chip *rgc,
int rtdm_gpiochip_scan_of(struct device_node *from,
const char *compat, int type);
+int rtdm_gpiochip_scan_array_of(struct device_node *from,
+ const char *compat[],
+ int nentries, int type);
+
void rtdm_gpiochip_remove_of(int type);
#endif
diff --git a/kernel/drivers/gpio/gpio-core.c b/kernel/drivers/gpio/gpio-core.c
index 3e97547..a27c9ee 100644
--- a/kernel/drivers/gpio/gpio-core.c
+++ b/kernel/drivers/gpio/gpio-core.c
@@ -571,6 +571,25 @@ int rtdm_gpiochip_scan_of(struct device_node *from, const
char *compat,
}
EXPORT_SYMBOL_GPL(rtdm_gpiochip_scan_of);
+int rtdm_gpiochip_scan_array_of(struct device_node *from,
+ const char *compat[],
+ int nentries, int type)
+{
+ int ret = -ENODEV, _ret, n;
+
+ for (n = 0; n < nentries; n++) {
+ _ret = rtdm_gpiochip_scan_of(from, compat[n], type);
+ if (_ret) {
+ if (_ret != -ENODEV)
+ return _ret;
+ } else
+ ret = 0;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(rtdm_gpiochip_scan_array_of);
+
void rtdm_gpiochip_remove_of(int type)
{
struct rtdm_gpio_chip *rgc, *n;
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