1 files changed, 45 insertions, 28 deletions

diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
index 7a993a384314..22f548805dfb 100644
--- a/drivers/gpu/drm/ast/ast_post.c
+++ b/drivers/gpu/drm/ast/ast_post.c
@@ -77,28 +77,42 @@ ast_set_def_ext_reg(struct drm_device *dev)
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0xff, reg);
 }
 
-u32 ast_mindwm(struct ast_device *ast, u32 r)
+static u32 __ast_mindwm(void __iomem *regs, u32 r)
 {
-	uint32_t data;
+	u32 data;
 
-	ast_write32(ast, 0xf004, r & 0xffff0000);
-	ast_write32(ast, 0xf000, 0x1);
+	__ast_write32(regs, 0xf004, r & 0xffff0000);
+	__ast_write32(regs, 0xf000, 0x1);
 
 	do {
-		data = ast_read32(ast, 0xf004) & 0xffff0000;
+		data = __ast_read32(regs, 0xf004) & 0xffff0000;
 	} while (data != (r & 0xffff0000));
-	return ast_read32(ast, 0x10000 + (r & 0x0000ffff));
+
+	return __ast_read32(regs, 0x10000 + (r & 0x0000ffff));
 }
 
-void ast_moutdwm(struct ast_device *ast, u32 r, u32 v)
+static void __ast_moutdwm(void __iomem *regs, u32 r, u32 v)
 {
-	uint32_t data;
-	ast_write32(ast, 0xf004, r & 0xffff0000);
-	ast_write32(ast, 0xf000, 0x1);
+	u32 data;
+
+	__ast_write32(regs, 0xf004, r & 0xffff0000);
+	__ast_write32(regs, 0xf000, 0x1);
+
 	do {
-		data = ast_read32(ast, 0xf004) & 0xffff0000;
+		data = __ast_read32(regs, 0xf004) & 0xffff0000;
 	} while (data != (r & 0xffff0000));
-	ast_write32(ast, 0x10000 + (r & 0x0000ffff), v);
+
+	__ast_write32(regs, 0x10000 + (r & 0x0000ffff), v);
+}
+
+u32 ast_mindwm(struct ast_device *ast, u32 r)
+{
+	return __ast_mindwm(ast->regs, r);
+}
+
+void ast_moutdwm(struct ast_device *ast, u32 r, u32 v)
+{
+	__ast_moutdwm(ast->regs, r, v);
 }
 
 /*
@@ -1987,17 +2001,18 @@ static bool ast_dram_init_2500(struct ast_device *ast)
 	return true;
 }
 
-void ast_patch_ahb_2500(struct ast_device *ast)
+void ast_patch_ahb_2500(void __iomem *regs)
 {
-	u32	data;
+	u32 data;
 
 	/* Clear bus lock condition */
-	ast_moutdwm(ast, 0x1e600000, 0xAEED1A03);
-	ast_moutdwm(ast, 0x1e600084, 0x00010000);
-	ast_moutdwm(ast, 0x1e600088, 0x00000000);
-	ast_moutdwm(ast, 0x1e6e2000, 0x1688A8A8);
-	data = ast_mindwm(ast, 0x1e6e2070);
-	if (data & 0x08000000) {					/* check fast reset */
+	__ast_moutdwm(regs, 0x1e600000, 0xAEED1A03);
+	__ast_moutdwm(regs, 0x1e600084, 0x00010000);
+	__ast_moutdwm(regs, 0x1e600088, 0x00000000);
+	__ast_moutdwm(regs, 0x1e6e2000, 0x1688A8A8);
+
+	data = __ast_mindwm(regs, 0x1e6e2070);
+	if (data & 0x08000000) { /* check fast reset */
 		/*
 		 * If "Fast restet" is enabled for ARM-ICE debugger,
 		 * then WDT needs to enable, that
@@ -2009,16 +2024,18 @@ void ast_patch_ahb_2500(struct ast_device *ast)
 		 *	[1]:= 1:WDT will be cleeared and disabled after timeout occurs
 		 *	[0]:= 1:WDT enable
 		 */
-		ast_moutdwm(ast, 0x1E785004, 0x00000010);
-		ast_moutdwm(ast, 0x1E785008, 0x00004755);
-		ast_moutdwm(ast, 0x1E78500c, 0x00000033);
+		__ast_moutdwm(regs, 0x1E785004, 0x00000010);
+		__ast_moutdwm(regs, 0x1E785008, 0x00004755);
+		__ast_moutdwm(regs, 0x1E78500c, 0x00000033);
 		udelay(1000);
 	}
+
 	do {
-		ast_moutdwm(ast, 0x1e6e2000, 0x1688A8A8);
-		data = ast_mindwm(ast, 0x1e6e2000);
-	}	while (data != 1);
-	ast_moutdwm(ast, 0x1e6e207c, 0x08000000);	/* clear fast reset */
+		__ast_moutdwm(regs, 0x1e6e2000, 0x1688A8A8);
+		data = __ast_mindwm(regs, 0x1e6e2000);
+	} while (data != 1);
+
+	__ast_moutdwm(regs, 0x1e6e207c, 0x08000000); /* clear fast reset */
 }
 
 void ast_post_chip_2500(struct drm_device *dev)
@@ -2030,7 +2047,7 @@ void ast_post_chip_2500(struct drm_device *dev)
 	reg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd0, 0xff);
 	if ((reg & AST_VRAM_INIT_STATUS_MASK) == 0) {/* vga only */
 		/* Clear bus lock condition */
-		ast_patch_ahb_2500(ast);
+		ast_patch_ahb_2500(ast->regs);
 
 		/* Disable watchdog */
 		ast_moutdwm(ast, 0x1E78502C, 0x00000000);