rockchip: rk3399: Move rockchip_get_cru() out of the driver

This function is called from outside the driver. It should be placed into
common SoC code. Move it.

Also rename the driver symbol to be more consistent with the other rockchip
clock drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

arch/arm/include/asm/arch-rockchip/cru_rk3399.h

@@ -9,6 +9,12 @@
 
 #include <common.h>
 
+/* Private data for the clock driver - used by rockchip_get_cru() */
+struct rk3399_clk_priv {
+	struct rk3399_cru *cru;
+	ulong rate;
+};
+
 struct rk3399_pmucru {
 	u32 ppll_con[6];
 	u32 reserved[0x1a];

arch/arm/mach-rockchip/rk3399/Makefile

@@ -4,5 +4,6 @@
 # SPDX-License-Identifier:     GPL-2.0+
 #
 
+obj-y += clk_rk3399.o
 obj-y += rk3399.o
 obj-y += syscon_rk3399.o

arch/arm/mach-rockchip/rk3399/clk_rk3399.c

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2016 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <syscon.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3399.h>
+
+int rockchip_get_clk(struct udevice **devp)
+{
+	return uclass_get_device_by_driver(UCLASS_CLK,
+			DM_GET_DRIVER(rockchip_rk3399_pmuclk), devp);
+}
+
+void *rockchip_get_cru(void)
+{
+	struct rk3399_clk_priv *priv;
+	struct udevice *dev;
+	int ret;
+
+	ret = rockchip_get_clk(&dev);
+	if (ret)
+		return ERR_PTR(ret);
+
+	priv = dev_get_priv(dev);
+
+	return priv->cru;
+}

drivers/clk/rockchip/clk_rk3399.c

@@ -18,11 +18,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-struct rk3399_clk_priv {
-	struct rk3399_cru *cru;
-	ulong rate;
-};
-
 struct rk3399_pmuclk_priv {
 	struct rk3399_pmucru *pmucru;
 };
@@ -780,25 +775,6 @@ static struct clk_ops rk3399_clk_ops = {
 	.set_rate = rk3399_clk_set_rate,
 };
 
-void *rockchip_get_cru(void)
-{
-	struct udevice *dev;
-	fdt_addr_t *addr;
-	int ret;
-
-	ret = uclass_get_device_by_driver(UCLASS_CLK,
-			DM_GET_DRIVER(clk_rk3399), &dev);
-
-	if (ret)
-		return ERR_PTR(ret);
-
-	addr = dev_get_addr_ptr(dev);
-	if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
-		return ERR_PTR(-EINVAL);
-
-	return addr;
-}
-
 static int rk3399_clk_probe(struct udevice *dev)
 {
 	struct rk3399_clk_priv *priv = dev_get_priv(dev);
@@ -992,7 +968,7 @@ static const struct udevice_id rk3399_pmuclk_ids[] = {
 	{ }
 };
 
-U_BOOT_DRIVER(pmuclk_rk3399) = {
+U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = {
 	.name		= "pmuclk_rk3399",
 	.id		= UCLASS_CLK,
 	.of_match	= rk3399_pmuclk_ids,