From 6fe12cdbcfe35ad4726a619a9546822d34fc934c Mon Sep 17 00:00:00 2001
From: Bibby Hsieh <bibby.hsieh@mediatek.com>
Date: Tue, 19 May 2020 15:27:29 +0800
Subject: i2c: core: support bus regulator controlling in adapter

Although in the most platforms, the bus power of i2c
are alway on, some platforms disable the i2c bus power
in order to meet low power request.

We get and enable bulk regulator in i2c adapter device.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
---
 include/linux/i2c.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include/linux/i2c.h')

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 456fc17ecb1c..bc83af0d38d1 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -15,6 +15,7 @@
 #include <linux/device.h>	/* for struct device */
 #include <linux/sched.h>	/* for completion */
 #include <linux/mutex.h>
+#include <linux/regulator/consumer.h>
 #include <linux/rtmutex.h>
 #include <linux/irqdomain.h>		/* for Host Notify IRQ */
 #include <linux/of.h>		/* for struct device_node */
@@ -721,6 +722,7 @@ struct i2c_adapter {
 	const struct i2c_adapter_quirks *quirks;
 
 	struct irq_domain *host_notify_domain;
+	struct regulator *bus_regulator;
 };
 #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev)
 
-- 
cgit v1.2.3-59-g8ed1b