linux-kernel - [PATCH v7 05/23] drm/sun4i: tcon: Export get tcon0 routine

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Message-Id: <20190201154232.10505-6-jagan@amarulasolutions.com>
Date:   Fri,  1 Feb 2019 21:12:14 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, Chen-Yu Tsai <wens@...e.org>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-amarula@...rulasolutions.com, linux-sunxi@...glegroups.com,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: [PATCH v7 05/23] drm/sun4i: tcon: Export get tcon0 routine

Sometimes tcon attributes like tcon divider, clock rate etc are needed
in interface drivers like DSI. So for such cases interface driver must
probe the respective tcon and get the attributes.

Since tcon0 probe is already available, via sun4i_get_tcon0 function,
export the same instead of probing tcon explicitly.

Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
Tested-by: Merlijn Wajer <merlijn@...zup.org>
---
 drivers/gpu/drm/sun4i/sun4i_tcon.c | 3 ++-
 drivers/gpu/drm/sun4i/sun4i_tcon.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 0420f5c978b9..3da75a0c5c5d 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -221,7 +221,7 @@ EXPORT_SYMBOL(sun4i_tcon_enable_vblank);
  * are located in TCON0. This helper returns a pointer to TCON0's
  * sun4i_tcon structure, or NULL if not found.
  */
-static struct sun4i_tcon *sun4i_get_tcon0(struct drm_device *drm)
+struct sun4i_tcon *sun4i_get_tcon0(struct drm_device *drm)
 {
 	struct sun4i_drv *drv = drm->dev_private;
 	struct sun4i_tcon *tcon;
@@ -235,6 +235,7 @@ static struct sun4i_tcon *sun4i_get_tcon0(struct drm_device *drm)
 
 	return NULL;
 }
+EXPORT_SYMBOL(sun4i_get_tcon0);
 
 void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
 			const struct drm_encoder *encoder)
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h
index b5214d71610f..a52696db14a5 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.h
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
@@ -274,6 +274,7 @@ struct sun4i_tcon {
 struct drm_bridge *sun4i_tcon_find_bridge(struct device_node *node);
 struct drm_panel *sun4i_tcon_find_panel(struct device_node *node);
 
+struct sun4i_tcon *sun4i_get_tcon0(struct drm_device *drm);
 void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
 void sun4i_tcon_mode_set(struct sun4i_tcon *tcon,
 			 const struct drm_encoder *encoder,
-- 
2.18.0.321.gffc6fa0e3