Port imx_check_clocks() and imx_obtain_fixed_clock() from Linux kernel.
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
arch/arm/mach-imx/clk.h | 4 ++++
drivers/clk/Makefile | 1 +
drivers/clk/imx/Makefile | 1 +
drivers/clk/imx/clk.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 55 insertions(+)
create mode 100644 drivers/clk/imx/Makefile
create mode 100644 drivers/clk/imx/clk.c
diff --git a/arch/arm/mach-imx/clk.h b/arch/arm/mach-imx/clk.h
index 35e480f..f96e5d2 100644
--- a/arch/arm/mach-imx/clk.h
+++ b/arch/arm/mach-imx/clk.h
@@ -109,4 +109,8 @@ static inline struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg,
struct clk *imx_clk_gate_exclusive(const char *name, const char *parent,
void __iomem *reg, u8 shift, u32 exclusive_mask);
+void imx_check_clocks(struct clk *clks[], unsigned int count);
+struct clk * __init imx_obtain_fixed_clock(const char *name, unsigned long rate);
+
+
#endif /* __IMX_CLK_H */
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 0fe8f1e..6dc82ea 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_CLK_SOCFPGA) += socfpga.o
obj-$(CONFIG_MACH_MIPS_ATH79) += clk-ar933x.o
+obj-$(CONFIG_COMMON_CLK) += imx/
diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
new file mode 100644
index 0000000..0303c0b
--- /dev/null
+++ b/drivers/clk/imx/Makefile
@@ -0,0 +1 @@
+obj-y += clk.o
diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c
new file mode 100644
index 0000000..0357048
--- /dev/null
+++ b/drivers/clk/imx/clk.c
@@ -0,0 +1,49 @@
+#include <common.h>
+#include <init.h>
+#include <driver.h>
+#include <linux/clk.h>
+#include <io.h>
+#include <of.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+
+#include "../../../arch/arm/mach-imx/clk.h"
+
+void __init imx_check_clocks(struct clk *clks[], unsigned int count)
+{
+ unsigned i;
+
+ for (i = 0; i < count; i++)
+ if (IS_ERR(clks[i]))
+ pr_err("i.MX clk %u: register failed with %ld\n",
+ i, PTR_ERR(clks[i]));
+}
+
+static struct clk * __init imx_obtain_fixed_clock_from_dt(const char *name)
+{
+ struct of_phandle_args phandle;
+ struct clk *clk = ERR_PTR(-ENODEV);
+ char *path;
+
+ path = basprintf("/clocks/%s", name);
+ if (!path)
+ return ERR_PTR(-ENOMEM);
+
+ phandle.np = of_find_node_by_path(path);
+ kfree(path);
+
+ if (phandle.np)
+ clk = of_clk_get_from_provider(&phandle);
+
+ return clk;
+}
+
+struct clk * __init imx_obtain_fixed_clock(const char *name, unsigned long rate)
+{
+ struct clk *clk;
+
+ clk = imx_obtain_fixed_clock_from_dt(name);
+ if (IS_ERR(clk))
+ clk = clk_fixed(name, rate);
+ return clk;
+}
--
2.5.5
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