drivers: gpu: Mark function as static and remove unused function in ast_main.c

Mark function ast_bo_unref() as static because it is not used outside
file ast_main.c and remove unused function ast_get_max_dclk() in
ast_main.c.

This eliminates the following warning in drm/ast/ast_main.c:
drivers/gpu/drm/ast/ast_main.c:192:10: warning: no previous prototype
for ‘ast_get_max_dclk’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_main.c:452:6: warning: no previous prototype for
‘ast_bo_unref’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 1 insertions, 48 deletions

diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index af0b868a9dfd..50535fd5a88d 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -189,53 +189,6 @@ static int ast_get_dram_info(struct drm_device *dev)
         return 0;
 }
 
-uint32_t ast_get_max_dclk(struct drm_device *dev, int bpp)
-{
-        struct ast_private *ast = dev->dev_private;
-        uint32_t dclk, jreg;
-        uint32_t dram_bus_width, mclk, dram_bandwidth, actual_dram_bandwidth, dram_efficency = 500;
-
-        dram_bus_width = ast->dram_bus_width;
-        mclk = ast->mclk;
-
-        if (ast->chip == AST2100 ||
-            ast->chip == AST1100 ||
-            ast->chip == AST2200 ||
-            ast->chip == AST2150 ||
-            ast->dram_bus_width == 16)
-                dram_efficency = 600;
-        else if (ast->chip == AST2300)
-                dram_efficency = 400;
-
-        dram_bandwidth = mclk * dram_bus_width * 2 / 8;
-        actual_dram_bandwidth = dram_bandwidth * dram_efficency / 1000;
-
-        if (ast->chip == AST1180)
-                dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
-        else {
-                jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
-                if ((jreg & 0x08) && (ast->chip == AST2000))
-                        dclk = actual_dram_bandwidth / ((bpp + 1 + 16) / 8);
-                else if ((jreg & 0x08) && (bpp == 8))
-                        dclk = actual_dram_bandwidth / ((bpp + 1 + 24) / 8);
-                else
-                        dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
-        }
-
-        if (ast->chip == AST2100 ||
-            ast->chip == AST2200 ||
-            ast->chip == AST2300 ||
-            ast->chip == AST1180) {
-                if (dclk > 200)
-                        dclk = 200;
-        } else {
-                if (dclk > 165)
-                        dclk = 165;
-        }
-
-        return dclk;
-}
-
 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
 {
         struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
@@ -449,7 +402,7 @@ int ast_dumb_create(struct drm_file *file,
         return 0;
 }
 
-void ast_bo_unref(struct ast_bo **bo)
+static void ast_bo_unref(struct ast_bo **bo)
 {
         struct ttm_buffer_object *tbo;