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authorSimon Glass2020-09-12 12:28:49 -0600
committerTom Rini2020-10-10 16:50:11 -0400
commit3d03ab6361a4a2b60e84da46c547b8ace01a60eb (patch)
treeb7cab1ed0489fd262afc76cf6ec72606c9dc51c5 /include/log.h
parentbd180db2cc73c7dc00076b0517978a8cdd557519 (diff)
log: Add a way to enable/disable a log device
At present all log devices are enabled by default. Add a function to allow devices to be disabled or enabled at runtime. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/log.h')
-rw-r--r--include/log.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/log.h b/include/log.h
index d28bc1ef0e4..4acc087b2e9 100644
--- a/include/log.h
+++ b/include/log.h
@@ -388,6 +388,10 @@ struct log_filter {
#define LOG_DRIVER(_name) \
ll_entry_declare(struct log_driver, _name, log_driver)
+/* Get a pointer to a given driver */
+#define LOG_GET_DRIVER(__name) \
+ ll_entry_get(struct log_driver, __name, log_driver)
+
/**
* log_get_cat_name() - Get the name of a category
*
@@ -465,6 +469,19 @@ int log_add_filter(const char *drv_name, enum log_category_t cat_list[],
*/
int log_remove_filter(const char *drv_name, int filter_num);
+/**
+ * log_device_set_enable() - Enable or disable a log device
+ *
+ * Devices are referenced by their driver, so use LOG_GET_DRIVER(name) to pass
+ * the driver to this function. For example if the driver is declared with
+ * LOG_DRIVER(wibble) then pass LOG_GET_DRIVER(wibble) here.
+ *
+ * @drv: Driver of device to enable
+ * @enable: true to enable, false to disable
+ * @return 0 if OK, -ENOENT if the driver was not found
+ */
+int log_device_set_enable(struct log_driver *drv, bool enable);
+
#if CONFIG_IS_ENABLED(LOG)
/**
* log_init() - Set up the log system ready for use