linux-kernel - [PATCH v4 12/32] auxdisplay: make charlcd_backlight visible to hd44780

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Message-Id: <20201005122732.3429347-13-poeschel@lemonage.de>
Date:   Mon,  5 Oct 2020 14:27:12 +0200
From:   poeschel@...onage.de
To:     Miguel Ojeda Sandonis <miguel.ojeda.sandonis@...il.com>,
        linux-kernel@...r.kernel.org (open list)
Cc:     Lars Poeschel <poeschel@...onage.de>, Willy Tarreau <w@....eu>
Subject: [PATCH v4 12/32] auxdisplay: make charlcd_backlight visible to hd44780_common

From: Lars Poeschel <poeschel@...onage.de>

hd44780_common wants to use the charlcd_backlight function, so make it
visible.

Reviewed-by: Willy Tarreau <w@....eu>
Signed-off-by: Lars Poeschel <poeschel@...onage.de>
---
 drivers/auxdisplay/charlcd.c | 3 ++-
 drivers/auxdisplay/charlcd.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c
index fc0daf4987d5..154419513186 100644
--- a/drivers/auxdisplay/charlcd.c
+++ b/drivers/auxdisplay/charlcd.c
@@ -91,7 +91,7 @@ static void long_sleep(int ms)
 }
 
 /* turn the backlight on or off */
-static void charlcd_backlight(struct charlcd *lcd, enum charlcd_onoff on)
+void charlcd_backlight(struct charlcd *lcd, enum charlcd_onoff on)
 {
 	struct charlcd_priv *priv = charlcd_to_priv(lcd);
 
@@ -103,6 +103,7 @@ static void charlcd_backlight(struct charlcd *lcd, enum charlcd_onoff on)
 		lcd->ops->backlight(lcd, on);
 	mutex_unlock(&priv->bl_tempo_lock);
 }
+EXPORT_SYMBOL_GPL(charlcd_backlight);
 
 static void charlcd_bl_off(struct work_struct *work)
 {
diff --git a/drivers/auxdisplay/charlcd.h b/drivers/auxdisplay/charlcd.h
index 0b3dafbbae72..e5b22e72fdc8 100644
--- a/drivers/auxdisplay/charlcd.h
+++ b/drivers/auxdisplay/charlcd.h
@@ -55,6 +55,7 @@ struct charlcd_ops {
 	int (*clear_display)(struct charlcd *lcd);
 };
 
+void charlcd_backlight(struct charlcd *lcd, enum charlcd_onoff on);
 struct charlcd *charlcd_alloc(void);
 void charlcd_free(struct charlcd *lcd);
 
-- 
2.28.0