drm/nouveau: mark symbols static where possible

We get a few warnings when building kernel with W=1:
drivers/gpu/drm/nouveau/nvkm/subdev/bios/fan.c:29:1: warning: no previous prototype for 'nvbios_fan_table' [-Wmissing-prototypes]
drivers/gpu/drm/nouveau/nvkm/subdev/bios/fan.c:56:1: warning: no previous prototype for 'nvbios_fan_entry' [-Wmissing-prototypes]
drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c:184:1: warning: no previous prototype for 'gt215_clk_info' [-Wmissing-prototypes]
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c:99:1: warning: no previous prototype for 'gt215_link_train_calc' [-Wmissing-prototypes]
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c:153:1: warning: no previous prototype for 'gt215_link_train' [-Wmissing-prototypes]
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c:271:1: warning: no previous prototype for 'gt215_link_train_init' [-Wmissing-prototypes]
....

In fact, both functions are only used in the file in which they are
declared and don't need a declaration, but can be made static.
So this patch marks these functions with 'static'.

Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_display.c

@@ -92,7 +92,7 @@ calc(int blanks, int blanke, int total, int line)
 	return line;
 }
 
-int
+static int
 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
 				ktime_t *stime, ktime_t *etime)
 {

drivers/gpu/drm/nouveau/nv10_fence.c

@@ -66,7 +66,7 @@ nv10_fence_context_del(struct nouveau_channel *chan)
 	nouveau_fence_context_free(&fctx->base);
 }
 
-int
+static int
 nv10_fence_context_new(struct nouveau_channel *chan)
 {
 	struct nv10_fence_chan *fctx;

drivers/gpu/drm/nouveau/nvkm/engine/device/user.c

@@ -326,7 +326,7 @@ nvkm_udevice = {
 	.sclass = nvkm_udevice_child_get,
 };
 
-int
+static int
 nvkm_udevice_new(const struct nvkm_oclass *oclass, void *data, u32 size,
 		 struct nvkm_object **pobject)
 {

drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.c

@@ -153,7 +153,7 @@ nv50_disp_chan_uevent = {
 	.fini = nv50_disp_chan_uevent_fini,
 };
 
-int
+static int
 nv50_disp_chan_rd32(struct nvkm_object *object, u64 addr, u32 *data)
 {
 	struct nv50_disp_chan *chan = nv50_disp_chan(object);
@@ -163,7 +163,7 @@ nv50_disp_chan_rd32(struct nvkm_object *object, u64 addr, u32 *data)
 	return 0;
 }
 
-int
+static int
 nv50_disp_chan_wr32(struct nvkm_object *object, u64 addr, u32 data)
 {
 	struct nv50_disp_chan *chan = nv50_disp_chan(object);
@@ -173,7 +173,7 @@ nv50_disp_chan_wr32(struct nvkm_object *object, u64 addr, u32 data)
 	return 0;
 }
 
-int
+static int
 nv50_disp_chan_ntfy(struct nvkm_object *object, u32 type,
 		    struct nvkm_event **pevent)
 {
@@ -189,7 +189,7 @@ nv50_disp_chan_ntfy(struct nvkm_object *object, u32 type,
 	return -EINVAL;
 }
 
-int
+static int
 nv50_disp_chan_map(struct nvkm_object *object, u64 *addr, u32 *size)
 {
 	struct nv50_disp_chan *chan = nv50_disp_chan(object);

drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c

@@ -66,7 +66,7 @@ nv50_disp_root_scanoutpos(NV50_DISP_MTHD_V0)
 	return 0;
 }
 
-int
+static int
 nv50_disp_root_mthd_(struct nvkm_object *object, u32 mthd, void *data, u32 size)
 {
 	union {

drivers/gpu/drm/nouveau/nvkm/engine/fifo/chang84.c

@@ -129,7 +129,7 @@ g84_fifo_chan_engine_fini(struct nvkm_fifo_chan *base,
 }
 
 
-int
+static int
 g84_fifo_chan_engine_init(struct nvkm_fifo_chan *base,
 			  struct nvkm_engine *engine)
 {
@@ -170,7 +170,7 @@ g84_fifo_chan_engine_ctor(struct nvkm_fifo_chan *base,
 	return nvkm_object_bind(object, NULL, 0, &chan->engn[engn]);
 }
 
-int
+static int
 g84_fifo_chan_object_ctor(struct nvkm_fifo_chan *base,
 			  struct nvkm_object *object)
 {

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf117.c

@@ -218,7 +218,7 @@ gf117_grctx_generate_attrib(struct gf100_grctx *info)
 	}
 }
 
-void
+static void
 gf117_grctx_generate_main(struct gf100_gr *gr, struct gf100_grctx *info)
 {
 	struct nvkm_device *device = gr->base.engine.subdev.device;

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgm107.c

@@ -933,7 +933,7 @@ gm107_grctx_generate_attrib(struct gf100_grctx *info)
 	}
 }
 
-void
+static void
 gm107_grctx_generate_tpcid(struct gf100_gr *gr)
 {
 	struct nvkm_device *device = gr->base.engine.subdev.device;

drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c

@@ -1384,7 +1384,7 @@ gf100_gr_intr(struct nvkm_gr *base)
 	nvkm_fifo_chan_put(device->fifo, flags, &chan);
 }
 
-void
+static void
 gf100_gr_init_fw(struct gf100_gr *gr, u32 fuc_base,
 		 struct gf100_gr_fuc *code, struct gf100_gr_fuc *data)
 {
@@ -1701,7 +1701,7 @@ gf100_gr_oneinit(struct nvkm_gr *base)
 	return 0;
 }
 
-int
+static int
 gf100_gr_init_(struct nvkm_gr *base)
 {
 	struct gf100_gr *gr = gf100_gr(base);

drivers/gpu/drm/nouveau/nvkm/engine/gr/gm107.c

@@ -308,7 +308,7 @@ gm107_gr_init_bios(struct gf100_gr *gr)
 	}
 }
 
-int
+static int
 gm107_gr_init(struct gf100_gr *gr)
 {
 	struct nvkm_device *device = gr->base.engine.subdev.device;

drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c

@@ -71,7 +71,7 @@ nvkm_perfdom_find(struct nvkm_pm *pm, int di)
 	return NULL;
 }
 
-struct nvkm_perfsig *
+static struct nvkm_perfsig *
 nvkm_perfsig_find(struct nvkm_pm *pm, u8 di, u8 si, struct nvkm_perfdom **pdom)
 {
 	struct nvkm_perfdom *dom = *pdom;
@@ -699,7 +699,7 @@ nvkm_pm_oclass_get(struct nvkm_oclass *oclass, int index,
 	return 1;
 }
 
-int
+static int
 nvkm_perfsrc_new(struct nvkm_pm *pm, struct nvkm_perfsig *sig,
 		 const struct nvkm_specsrc *spec)
 {

drivers/gpu/drm/nouveau/nvkm/subdev/bios/fan.c

@@ -25,7 +25,7 @@
 #include <subdev/bios/bit.h>
 #include <subdev/bios/fan.h>
 
-u16
+static u16
 nvbios_fan_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
 {
 	struct bit_entry bit_P;
@@ -52,7 +52,7 @@ nvbios_fan_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
 	return 0x0000;
 }
 
-u16
+static u16
 nvbios_fan_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr,
 		 u8 *cnt, u8 *len)
 {

drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c

@@ -180,7 +180,7 @@ gt215_clk_read(struct nvkm_clk *base, enum nv_clk_src src)
 	return 0;
 }
 
-int
+static int
 gt215_clk_info(struct nvkm_clk *base, int idx, u32 khz,
 	       struct gt215_clk_info *info)
 {

drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c

@@ -95,7 +95,7 @@ struct gt215_ram {
 	struct gt215_ltrain ltrain;
 };
 
-void
+static void
 gt215_link_train_calc(u32 *vals, struct gt215_ltrain *train)
 {
 	int i, lo, hi;
@@ -149,7 +149,7 @@ gt215_link_train_calc(u32 *vals, struct gt215_ltrain *train)
 /*
  * Link training for (at least) DDR3
  */
-int
+static int
 gt215_link_train(struct gt215_ram *ram)
 {
 	struct gt215_ltrain *train = &ram->ltrain;
@@ -267,7 +267,7 @@ out:
 	return ret;
 }
 
-int
+static int
 gt215_link_train_init(struct gt215_ram *ram)
 {
 	static const u32 pattern[16] = {
@@ -333,7 +333,7 @@ gt215_link_train_init(struct gt215_ram *ram)
 	return 0;
 }
 
-void
+static void
 gt215_link_train_fini(struct gt215_ram *ram)
 {
 	if (ram->ltrain.mem)

drivers/gpu/drm/nouveau/nvkm/subdev/gpio/gk104.c

@@ -37,7 +37,7 @@ gk104_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
 	nvkm_wr32(device, 0x00dc80, intr1);
 }
 
-void
+static void
 gk104_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
 {
 	struct nvkm_device *device = gpio->subdev.device;

drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gm200.c

@@ -1364,7 +1364,7 @@ gm200_secboot_init(struct nvkm_secboot *sb)
 	return 0;
 }
 
-int
+static int
 gm200_secboot_fini(struct nvkm_secboot *sb, bool suspend)
 {
 	struct gm200_secboot *gsb = gm200_secboot(sb);

drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk104.c

@@ -35,7 +35,7 @@ struct gk104_volt {
 	struct nvbios_volt bios;
 };
 
-int
+static int
 gk104_volt_get(struct nvkm_volt *base)
 {
 	struct nvbios_volt *bios = &gk104_volt(base)->bios;
@@ -48,7 +48,7 @@ gk104_volt_get(struct nvkm_volt *base)
 	return bios->base + bios->pwm_range * duty / div;
 }
 
-int
+static int
 gk104_volt_set(struct nvkm_volt *base, u32 uv)
 {
 	struct nvbios_volt *bios = &gk104_volt(base)->bios;