From cfa576db834cacc1bb01bc41b2f61a8b578e67c5 Mon Sep 17 00:00:00 2001
From: Nicola Corna <nicola@corna.info>
Date: Thu, 29 Oct 2015 12:34:26 +0100
Subject: [PATCH] i2c: add i2c_check_quirks helper function
This patch adds a i2c_check_quirks helper function to check the quirk flags
of an i2c adapter, in a similar way to i2c_check_functionality.
Signed-off-by: Nicola Corna <nicola@corna.info>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
---
include/linux/i2c.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 96970024883ff9..51028f351d13e9 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -617,6 +617,20 @@ static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func)
return (func & i2c_get_functionality(adap)) == func;
}
+/**
+ * i2c_check_quirks() - Function for checking the quirk flags in an i2c adapter
+ * @adap: i2c adapter
+ * @quirks: quirk flags
+ *
+ * Return: true if the adapter has all the specified quirk flags, false if not
+ */
+static inline bool i2c_check_quirks(struct i2c_adapter *adap, u64 quirks)
+{
+ if (!adap->quirks)
+ return false;
+ return (adap->quirks->flags & quirks) == quirks;
+}
+
/* Return the adapter number for a specific adapter */
static inline int i2c_adapter_id(struct i2c_adapter *adap)
{
--
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