param: Add support for long long read only dev param

Signed-off-by: Herve Codina <Herve.CODINA@celad.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 35 insertions, 0 deletions

diff --git a/include/param.h b/include/param.h
index eac3372f34..24827c5e78 100644
--- a/include/param.h
+++ b/include/param.h
@@ -49,6 +49,9 @@ struct param_d *dev_add_param_enum(struct device_d *dev, const char *name,
 struct param_d *dev_add_param_int_ro(struct device_d *dev, const char *name,
 		int value, const char *format);
 
+struct param_d *dev_add_param_llint_ro(struct device_d *dev, const char *name,
+		long long value, const char *format);
+
 struct param_d *dev_add_param_ip(struct device_d *dev, const char *name,
 		int (*set)(struct param_d *p, void *priv),
 		int (*get)(struct param_d *p, void *priv),
@@ -123,6 +126,12 @@ static inline struct param_d *dev_add_param_int_ro(struct device_d *dev, const c
 	return NULL;
 }
 
+static inline struct param_d *dev_add_param_llint_ro(struct device_d *dev, const char *name,
+		long long value, const char *format)
+{
+	return NULL;
+}
+
 static inline struct param_d *dev_add_param_ip(struct device_d *dev, const char *name,
 		int (*set)(struct param_d *p, void *priv),
 		int (*get)(struct param_d *p, void *priv),
diff --git a/lib/parameter.c b/lib/parameter.c
index b1f9aa3a49..13062bc667 100644
--- a/lib/parameter.c
+++ b/lib/parameter.c
@@ -468,6 +468,32 @@ struct param_d *dev_add_param_int_ro(struct device_d *dev, const char *name,
 	return &piro->param;
 }
 
+/**
+ * dev_add_param_llint_ro - add a read only long long parameter to a device
+ * @param dev	The device
+ * @param name	The name of the parameter
+ * @param value	The value of the parameter
+ * @param format the printf format used to print the value
+ */
+struct param_d *dev_add_param_llint_ro(struct device_d *dev, const char *name,
+		long long value, const char *format)
+{
+	struct param_int *piro;
+	int ret;
+
+	piro = xzalloc(sizeof(*piro));
+
+	ret = __dev_add_param(&piro->param, dev, name, NULL, NULL, 0);
+	if (ret) {
+		free(piro);
+		return ERR_PTR(ret);
+	}
+
+	piro->param.value = asprintf(format, value);
+
+	return &piro->param;
+}
+
 #ifdef CONFIG_NET
 struct param_ip {
 	struct param_d param;