From: Simon Glass <sjg@chromium.org>
Date: Fri, 22 Jan 2016 02:44:05 +0000 (-0700)
Subject: rockchip: clk: Make rkclk_get_clk() SoC-specific
X-Git-Tag: KARO-TXSD-2017-03-15~2179
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5ddf5d7705d2c2b59282ebd37aa2018460274e89;p=karo-tx-uboot.git

rockchip: clk: Make rkclk_get_clk() SoC-specific

The current method assumes that clocks are numbered from 0 and we can
determine a clock by its number. It is safer to use an ID in the clock's
platform data to avoid the situation where another clock is bound before
the one we expect.

Move the existing code into rk3036 since it still works there. Add a new
implementation for rk3288.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index 1cc4a96bf4..55567cb131 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -11,6 +11,5 @@ else
 obj-$(CONFIG_ROCKCHIP_RK3288) += board.o
 endif
 obj-y += rk_timer.o
-obj-$(CONFIG_$(SPL_)ROCKCHIP_COMMON) += common.o
 obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288/
 obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036/
diff --git a/arch/arm/mach-rockchip/common.c b/arch/arm/mach-rockchip/common.c
deleted file mode 100644
index fc7ac726cc..0000000000
--- a/arch/arm/mach-rockchip/common.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * (C) Copyright 2015 Google, Inc
- *
- * SPDX-License-Identifier:     GPL-2.0+
- */
-
-#include <common.h>
-#include <dm.h>
-#include <errno.h>
-#include <fdtdec.h>
-#include <linux/err.h>
-
-void *rockchip_get_cru(void)
-{
-	struct udevice *dev;
-	fdt_addr_t addr;
-	int ret;
-
-	ret = uclass_get_device(UCLASS_CLK, 0, &dev);
-	if (ret)
-		return ERR_PTR(ret);
-
-	addr = dev_get_addr(dev);
-	if (addr == FDT_ADDR_T_NONE)
-		return ERR_PTR(-EINVAL);
-
-	return (void *)addr;
-}
diff --git a/drivers/clk/clk_rk3036.c b/drivers/clk/clk_rk3036.c
index dfecc24ece..bd5f22a753 100644
--- a/drivers/clk/clk_rk3036.c
+++ b/drivers/clk/clk_rk3036.c
@@ -57,6 +57,23 @@ static inline unsigned int log2(unsigned int value)
 	return fls(value) - 1;
 }
 
+void *rockchip_get_cru(void)
+{
+	struct udevice *dev;
+	fdt_addr_t addr;
+	int ret;
+
+	ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+	if (ret)
+		return ERR_PTR(ret);
+
+	addr = dev_get_addr(dev);
+	if (addr == FDT_ADDR_T_NONE)
+		return ERR_PTR(-EINVAL);
+
+	return (void *)addr;
+}
+
 static int rkclk_set_pll(struct rk3036_cru *cru, enum rk_clk_id clk_id,
 			 const struct pll_div *div)
 {
diff --git a/drivers/clk/clk_rk3288.c b/drivers/clk/clk_rk3288.c
index d294788f9c..5a8f175e4b 100644
--- a/drivers/clk/clk_rk3288.c
+++ b/drivers/clk/clk_rk3288.c
@@ -159,6 +159,19 @@ int rkclk_get_clk(enum rk_clk_id clk_id, struct udevice **devp)
 	return -ENODEV;
 }
 
+void *rockchip_get_cru(void)
+{
+	struct rk3288_clk_priv *priv;
+	struct udevice *dev;
+	int ret;
+
+	ret = rkclk_get_clk(CLK_GENERAL, &dev);
+	if (ret)
+		return ERR_PTR(ret);
+	priv = dev_get_priv(dev);
+	return priv->cru;
+}
+
 static int rkclk_set_pll(struct rk3288_cru *cru, enum rk_clk_id clk_id,
 			 const struct pll_div *div)
 {