[U-Boot] [PATCH 2/5] imx-common: Factor out get_ahb_clk()

[Fabio Estevam]

get_ahb_clk() is a common function between mx5 and mx6.

Place it into imx-common directory.

Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
 arch/arm/cpu/armv7/imx-common/cpu.c                |   23 ++++++++++++++++++++
 arch/arm/cpu/armv7/mx5/clock.c                     |   17 +-------------
 arch/arm/cpu/armv7/mx6/clock.c                     |   17 ++------------
 arch/arm/include/asm/arch-mx5/sys_proto.h          |    1 +
 .../asm/arch-mx6/{ccm_regs.h => crm_regs.h}        |    2 +-
 arch/arm/include/asm/arch-mx6/sys_proto.h          |    1 +
 6 files changed, 30 insertions(+), 31 deletions(-)
 rename arch/arm/include/asm/arch-mx6/{ccm_regs.h => crm_regs.h} (99%)

diff --git a/arch/arm/cpu/armv7/imx-common/cpu.c b/arch/arm/cpu/armv7/imx-common/cpu.c
index 6d7486b..62b01e7 100644
--- a/arch/arm/cpu/armv7/imx-common/cpu.c
+++ b/arch/arm/cpu/armv7/imx-common/cpu.c
@@ -29,6 +29,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/crm_regs.h>
 
 #ifdef CONFIG_FSL_ESDHC
 #include <fsl_esdhc.h>
@@ -107,3 +108,25 @@ void reset_cpu(ulong addr)
 {
 	__raw_writew(4, WDOG1_BASE_ADDR);
 }
+
+static u32 __get_periph_clk(void)
+{
+	return 0;	/* clock.c will override it */
+}
+
+u32 get_periph_clk(void)
+	__attribute__((weak, alias("__get_periph_clk")));
+
+u32 get_ahb_clk(void)
+{
+	struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	u32 reg, ahb_podf;
+
+	reg = __raw_readl(&imx_ccm->cbcdr);
+	reg &= MXC_CCM_CBCDR_AHB_PODF_MASK;
+	ahb_podf = reg >> MXC_CCM_CBCDR_AHB_PODF_OFFSET;
+
+	return get_periph_clk() / (ahb_podf + 1);
+
+	return 0;
+}
diff --git a/arch/arm/cpu/armv7/mx5/clock.c b/arch/arm/cpu/armv7/mx5/clock.c
index e92f106..a1c8411 100644
--- a/arch/arm/cpu/armv7/mx5/clock.c
+++ b/arch/arm/cpu/armv7/mx5/clock.c
@@ -30,6 +30,7 @@
 #include <asm/arch/crm_regs.h>
 #include <asm/arch/clock.h>
 #include <div64.h>
+#include <asm/arch/sys_proto.h>
 
 enum pll_clocks {
 	PLL1_CLOCK = 0,
@@ -213,22 +214,6 @@ static u32 get_periph_clk(void)
 }
 
 /*
- * Get the rate of ahb clock.
- */
-static u32 get_ahb_clk(void)
-{
-	uint32_t freq, div, reg;
-
-	freq = get_periph_clk();
-
-	reg = __raw_readl(&mxc_ccm->cbcdr);
-	div = ((reg & MXC_CCM_CBCDR_AHB_PODF_MASK) >>
-			MXC_CCM_CBCDR_AHB_PODF_OFFSET) + 1;
-
-	return freq / div;
-}
-
-/*
  * Get the rate of ipg clock.
  */
 static u32 get_ipg_clk(void)
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index ef98563..5d42051 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -24,8 +24,9 @@
 #include <asm/io.h>
 #include <asm/errno.h>
 #include <asm/arch/imx-regs.h>
-#include <asm/arch/ccm_regs.h>
+#include <asm/arch/crm_regs.h>
 #include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
 
 enum pll_clocks {
 	PLL_SYS,	/* System PLL */
@@ -34,7 +35,7 @@ enum pll_clocks {
 	PLL_ENET,	/* ENET PLL */
 };
 
-struct imx_ccm_reg *imx_ccm = (struct imx_ccm_reg *)CCM_BASE_ADDR;
+struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 
 void enable_usboh3_clk(unsigned char enable)
 {
@@ -139,18 +140,6 @@ static u32 get_periph_clk(void)
 	return freq;
 }
 
-
-static u32 get_ahb_clk(void)
-{
-	u32 reg, ahb_podf;
-
-	reg = __raw_readl(&imx_ccm->cbcdr);
-	reg &= MXC_CCM_CBCDR_AHB_PODF_MASK;
-	ahb_podf = reg >> MXC_CCM_CBCDR_AHB_PODF_OFFSET;
-
-	return get_periph_clk() / (ahb_podf + 1);
-}
-
 static u32 get_ipg_clk(void)
 {
 	u32 reg, ipg_podf;
diff --git a/arch/arm/include/asm/arch-mx5/sys_proto.h b/arch/arm/include/asm/arch-mx5/sys_proto.h
index 13d12ee..7250059 100644
--- a/arch/arm/include/asm/arch-mx5/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx5/sys_proto.h
@@ -35,5 +35,6 @@ void set_chipselect_size(int const);
  */
 
 int fecmxc_initialize(bd_t *bis);
+u32 get_ahb_clk(void);
 
 #endif
diff --git a/arch/arm/include/asm/arch-mx6/ccm_regs.h b/arch/arm/include/asm/arch-mx6/crm_regs.h
similarity index 99%
rename from arch/arm/include/asm/arch-mx6/ccm_regs.h
rename to arch/arm/include/asm/arch-mx6/crm_regs.h
index 4af0b90..0e605c2 100644
--- a/arch/arm/include/asm/arch-mx6/ccm_regs.h
+++ b/arch/arm/include/asm/arch-mx6/crm_regs.h
@@ -20,7 +20,7 @@
 #ifndef __ARCH_ARM_MACH_MX6_CCM_REGS_H__
 #define __ARCH_ARM_MACH_MX6_CCM_REGS_H__
 
-struct imx_ccm_reg {
+struct mxc_ccm_reg {
 	u32 ccr;	/* 0x0000 */
 	u32 ccdr;
 	u32 csr;
diff --git a/arch/arm/include/asm/arch-mx6/sys_proto.h b/arch/arm/include/asm/arch-mx6/sys_proto.h
index 668e77a..3bfc69c 100644
--- a/arch/arm/include/asm/arch-mx6/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx6/sys_proto.h
@@ -34,5 +34,6 @@ u32 get_cpu_rev(void);
  */
 
 int fecmxc_initialize(bd_t *bis);
+u32 get_ahb_clk(void);
 
 #endif
-- 
1.7.1