ARM: at91: clock: add a new file to handle clock

To reduce the duplicated code, add a new file to accommodate
the peripheral's and system's clock handle code, shared with
the SoCs with different ARM core.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Tested-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>

5 files changed, 69 insertions, 33 deletions

diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index abd1d13da7..44245234ee 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_SAMA5D4) += mpddrc.o spl_atmel.o matrix.o atmel_sfr.o
 obj-y += spl.o
 endif
 
+obj-y += clock.o
 obj-$(CONFIG_CPU_ARM920T)	+= arm920t/
 obj-$(CONFIG_CPU_ARM926EJS)	+= arm926ejs/
 obj-$(CONFIG_CPU_V7)		+= armv7/
diff --git a/arch/arm/mach-at91/arm926ejs/clock.c b/arch/arm/mach-at91/arm926ejs/clock.c
index 8d6934e324..c8b5e10085 100644
--- a/arch/arm/mach-at91/arm926ejs/clock.c
+++ b/arch/arm/mach-at91/arm926ejs/clock.c
@@ -242,10 +242,3 @@ void at91_mck_init(u32 mckr)
 	while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY))
 		;
 }
-
-void at91_periph_clk_enable(int id)
-{
-	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
-
-	writel(1 << id, &pmc->pcer);
-}
diff --git a/arch/arm/mach-at91/armv7/clock.c b/arch/arm/mach-at91/armv7/clock.c
index 41dbf16afd..81e9f69c94 100644
--- a/arch/arm/mach-at91/armv7/clock.c
+++ b/arch/arm/mach-at91/armv7/clock.c
@@ -150,32 +150,6 @@ void at91_mck_init(u32 mckr)
 		;
 }
 
-void at91_periph_clk_enable(int id)
-{
-	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
-	u32 regval;
-
-	if (id > AT91_PMC_PCR_PID_MASK)
-		return;
-
-	regval = AT91_PMC_PCR_EN | AT91_PMC_PCR_CMD_WRITE | id;
-
-	writel(regval, &pmc->pcr);
-}
-
-void at91_periph_clk_disable(int id)
-{
-	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
-	u32 regval;
-
-	if (id > AT91_PMC_PCR_PID_MASK)
-		return;
-
-	regval = AT91_PMC_PCR_CMD_WRITE | id;
-
-	writel(regval, &pmc->pcr);
-}
-
 int at91_enable_periph_generated_clk(u32 id, u32 clk_source, u32 div)
 {
 	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
diff --git a/arch/arm/mach-at91/clock.c b/arch/arm/mach-at91/clock.c
new file mode 100644
index 0000000000..2a0308fa64
--- /dev/null
+++ b/arch/arm/mach-at91/clock.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2015 Atmel Corporation
+ *		      Wenyou Yang <wenyou.yang@atmel.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/at91_pmc.h>
+
+void at91_periph_clk_enable(int id)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+#ifdef CPU_HAS_PCR
+	u32 regval;
+	u32 div_value;
+
+	if (id > AT91_PMC_PCR_PID_MASK)
+		return;
+
+	writel(id, &pmc->pcr);
+
+	div_value = readl(&pmc->pcr) & AT91_PMC_PCR_DIV;
+
+	regval = AT91_PMC_PCR_EN | AT91_PMC_PCR_CMD_WRITE | id | div_value;
+
+	writel(regval, &pmc->pcr);
+#else
+	writel(0x01 << id, &pmc->pcer);
+#endif
+}
+
+void at91_periph_clk_disable(int id)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+#ifdef CPU_HAS_PCR
+	u32 regval;
+
+	if (id > AT91_PMC_PCR_PID_MASK)
+		return;
+
+	regval = AT91_PMC_PCR_CMD_WRITE | id;
+
+	writel(regval, &pmc->pcr);
+#else
+	writel(0x01 << id, &pmc->pcdr);
+#endif
+}
+
+void at91_system_clk_enable(int sys_clk)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+	writel(sys_clk, &pmc->scer);
+}
+
+void at91_system_clk_disable(int sys_clk)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+	writel(sys_clk, &pmc->scdr);
+}
diff --git a/arch/arm/mach-at91/include/mach/clk.h b/arch/arm/mach-at91/include/mach/clk.h
index ad839275ec..bef4e1c101 100644
--- a/arch/arm/mach-at91/include/mach/clk.h
+++ b/arch/arm/mach-at91/include/mach/clk.h
@@ -128,5 +128,7 @@ void at91_periph_clk_enable(int id);
 void at91_periph_clk_disable(int id);
 int at91_enable_periph_generated_clk(u32 id, u32 clk_source, u32 div);
 u32 at91_get_periph_generated_clk(u32 id);
+void at91_system_clk_enable(int sys_clk);
+void at91_system_clk_disable(int sys_clk);
 
 #endif /* __ASM_ARM_ARCH_CLK_H__ */