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-rw-r--r--arch/mips/ath79/common.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/mips/ath79/common.c b/arch/mips/ath79/common.c
new file mode 100644
index 000000000000..58f60e722a03
--- /dev/null
+++ b/arch/mips/ath79/common.c
@@ -0,0 +1,97 @@
+/*
+ * Atheros AR71XX/AR724X/AR913X common routines
+ *
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+#include "common.h"
+
+static DEFINE_SPINLOCK(ath79_device_reset_lock);
+
+u32 ath79_cpu_freq;
+EXPORT_SYMBOL_GPL(ath79_cpu_freq);
+
+u32 ath79_ahb_freq;
+EXPORT_SYMBOL_GPL(ath79_ahb_freq);
+
+u32 ath79_ddr_freq;
+EXPORT_SYMBOL_GPL(ath79_ddr_freq);
+
+enum ath79_soc_type ath79_soc;
+
+void __iomem *ath79_pll_base;
+void __iomem *ath79_reset_base;
+EXPORT_SYMBOL_GPL(ath79_reset_base);
+void __iomem *ath79_ddr_base;
+
+void ath79_ddr_wb_flush(u32 reg)
+{
+ void __iomem *flush_reg = ath79_ddr_base + reg;
+
+ /* Flush the DDR write buffer. */
+ __raw_writel(0x1, flush_reg);
+ while (__raw_readl(flush_reg) & 0x1)
+ ;
+
+ /* It must be run twice. */
+ __raw_writel(0x1, flush_reg);
+ while (__raw_readl(flush_reg) & 0x1)
+ ;
+}
+EXPORT_SYMBOL_GPL(ath79_ddr_wb_flush);
+
+void ath79_device_reset_set(u32 mask)
+{
+ unsigned long flags;
+ u32 reg;
+ u32 t;
+
+ if (soc_is_ar71xx())
+ reg = AR71XX_RESET_REG_RESET_MODULE;
+ else if (soc_is_ar724x())
+ reg = AR724X_RESET_REG_RESET_MODULE;
+ else if (soc_is_ar913x())
+ reg = AR913X_RESET_REG_RESET_MODULE;
+ else
+ BUG();
+
+ spin_lock_irqsave(&ath79_device_reset_lock, flags);
+ t = ath79_reset_rr(reg);
+ ath79_reset_wr(reg, t | mask);
+ spin_unlock_irqrestore(&ath79_device_reset_lock, flags);
+}
+EXPORT_SYMBOL_GPL(ath79_device_reset_set);
+
+void ath79_device_reset_clear(u32 mask)
+{
+ unsigned long flags;
+ u32 reg;
+ u32 t;
+
+ if (soc_is_ar71xx())
+ reg = AR71XX_RESET_REG_RESET_MODULE;
+ else if (soc_is_ar724x())
+ reg = AR724X_RESET_REG_RESET_MODULE;
+ else if (soc_is_ar913x())
+ reg = AR913X_RESET_REG_RESET_MODULE;
+ else
+ BUG();
+
+ spin_lock_irqsave(&ath79_device_reset_lock, flags);
+ t = ath79_reset_rr(reg);
+ ath79_reset_wr(reg, t & ~mask);
+ spin_unlock_irqrestore(&ath79_device_reset_lock, flags);
+}
+EXPORT_SYMBOL_GPL(ath79_device_reset_clear);