[PATCH 21/30] drm/radeon/atom: Move 'radeon_atom_hw_i2c_*()'s prototypes into shared header

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/radeon/atombios_i2c.c:100:5: warning: no previous prototype for ‘radeon_atom_hw_i2c_xfer’ [-Wmissing-prototypes]
 100 | int radeon_atom_hw_i2c_xfer(struct i2c_adapter *i2c_adap,
 | ^~~~~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/atombios_i2c.c:150:5: warning: no previous prototype for ‘radeon_atom_hw_i2c_func’ [-Wmissing-prototypes]
 150 | u32 radeon_atom_hw_i2c_func(struct i2c_adapter *adap)
 | ^~~~~~~~~~~~~~~~~~~~~~~

Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: "Christian König" <christian.koenig at amd.com>
Cc: David Airlie <airlied at linux.ie>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: amd-gfx at lists.freedesktop.org
Cc: dri-devel at lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones at linaro.org>
---
 drivers/gpu/drm/radeon/atom.h       | 6 ++++++
 drivers/gpu/drm/radeon/radeon_i2c.c | 4 ----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/radeon/atom.h b/drivers/gpu/drm/radeon/atom.h
index cb93b83114dbe..efc05e33b220c 100644
--- a/drivers/gpu/drm/radeon/atom.h
+++ b/drivers/gpu/drm/radeon/atom.h
@@ -160,6 +160,12 @@ struct radeon_device;
 bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
 				struct drm_display_mode *mode);
 
+struct i2c_msg;
+struct i2c_adapter;
+int radeon_atom_hw_i2c_xfer(struct i2c_adapter *i2c_adap,
+			    struct i2c_msg *msgs, int num);
+u32 radeon_atom_hw_i2c_func(struct i2c_adapter *adap);
+
 #include "atom-types.h"
 #include "atombios.h"
 #include "ObjectID.h"
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c
index aa61b3cb4049c..e543d993f73ee 100644
--- a/drivers/gpu/drm/radeon/radeon_i2c.c
+++ b/drivers/gpu/drm/radeon/radeon_i2c.c
@@ -34,10 +34,6 @@
 #include "radeon.h"
 #include "atom.h"
 
-extern int radeon_atom_hw_i2c_xfer(struct i2c_adapter *i2c_adap,
-				   struct i2c_msg *msgs, int num);
-extern u32 radeon_atom_hw_i2c_func(struct i2c_adapter *adap);
-
 bool radeon_ddc_probe(struct radeon_connector *radeon_connector, bool use_aux)
 {
 	u8 out = 0x0;
-- 
2.25.1