1 files changed, 74 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/ppc.c b/arch/arm/mach-exynos/ppc.c
new file mode 100644
index 0000000..8c97b1a
--- /dev/null
+++ b/arch/arm/mach-exynos/ppc.c
@@ -0,0 +1,74 @@
+/* linux/arch/arm/mach-exynos/ppc.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * EXYNOS4 - PPMU support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <mach/map.h>
+#include <mach/regs-clock.h>
+#include <mach/ppmu.h>
+
+void exynos4_ppc_reset(struct exynos4_ppmu_hw *ppmu)
+{
+	void __iomem *ppmu_base = ppmu->hw_base;
+	int i;
+
+	__raw_writel(0x8000000f, ppmu_base + 0xf010);
+	__raw_writel(0x8000000f, ppmu_base + 0xf050);
+	__raw_writel(0x6, ppmu_base + 0xf000);
+	__raw_writel(0x0, ppmu_base + 0xf100);
+
+	ppmu->ccnt = 0;
+	for (i = 0; i < NUMBER_OF_COUNTER; i++)
+		ppmu->count[i] = 0;
+}
+
+void exynos4_ppc_setevent(struct exynos4_ppmu_hw *ppmu,
+				  unsigned int evt)
+{
+	void __iomem *ppmu_base = ppmu->hw_base;
+
+	ppmu->event[0] = evt;
+
+	__raw_writel(((evt << 12) | 0x1), ppmu_base + 0xfc);
+}
+
+void exynos4_ppc_start(struct exynos4_ppmu_hw *ppmu)
+{
+	void __iomem *ppmu_base = ppmu->hw_base;
+
+	__raw_writel(0x1, ppmu_base + 0xf000);
+}
+
+void exynos4_ppc_stop(struct exynos4_ppmu_hw *ppmu)
+{
+	void __iomem *ppmu_base = ppmu->hw_base;
+
+	__raw_writel(0x0, ppmu_base + 0xf000);
+}
+
+unsigned long long exynos4_ppc_update(struct exynos4_ppmu_hw *ppmu)
+{
+	void __iomem *ppmu_base = ppmu->hw_base;
+	unsigned int i;
+
+	ppmu->ccnt = __raw_readl(ppmu_base + 0xf100);
+
+	for (i = 0; i < NUMBER_OF_COUNTER; i++)
+		ppmu->count[i] =
+			__raw_readl(ppmu_base + (0xf110 + (0x10 * i)));
+
+	return 0;
+}
+