/*
* AR71xx SoC routines
*
- * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008-2009 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
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
#include <asm/mach-ar71xx/ar71xx.h>
+static DEFINE_MUTEX(ar71xx_flash_mutex);
+static DEFINE_SPINLOCK(ar71xx_device_lock);
+
void __iomem *ar71xx_ddr_base;
EXPORT_SYMBOL_GPL(ar71xx_ddr_base);
void ar71xx_device_stop(u32 mask)
{
unsigned long flags;
+ u32 mask_inv;
+ u32 t;
+
+ switch (ar71xx_soc) {
+ case AR71XX_SOC_AR7130:
+ case AR71XX_SOC_AR7141:
+ case AR71XX_SOC_AR7161:
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
+ ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t | mask);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
+
+ case AR71XX_SOC_AR7240:
+ case AR71XX_SOC_AR7241:
+ case AR71XX_SOC_AR7242:
+ mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
+ t |= mask;
+ t &= ~mask_inv;
+ ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
- local_irq_save(flags);
- ar71xx_reset_wr(RESET_REG_RESET_MODULE,
- ar71xx_reset_rr(RESET_REG_RESET_MODULE) | mask);
- local_irq_restore(flags);
+ case AR71XX_SOC_AR9130:
+ case AR71XX_SOC_AR9132:
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
+ ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t | mask);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
+
+ default:
+ BUG();
+ }
}
EXPORT_SYMBOL_GPL(ar71xx_device_stop);
void ar71xx_device_start(u32 mask)
{
unsigned long flags;
+ u32 mask_inv;
+ u32 t;
+
+ switch (ar71xx_soc) {
+ case AR71XX_SOC_AR7130:
+ case AR71XX_SOC_AR7141:
+ case AR71XX_SOC_AR7161:
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
+ ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t & ~mask);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
+
+ case AR71XX_SOC_AR7240:
+ case AR71XX_SOC_AR7241:
+ case AR71XX_SOC_AR7242:
+ mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
+ t &= ~mask;
+ t |= mask_inv;
+ ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
- local_irq_save(flags);
- ar71xx_reset_wr(RESET_REG_RESET_MODULE,
- ar71xx_reset_rr(RESET_REG_RESET_MODULE) & ~mask);
- local_irq_restore(flags);
+ case AR71XX_SOC_AR9130:
+ case AR71XX_SOC_AR9132:
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
+ ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t & ~mask);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
+
+ default:
+ BUG();
+ }
}
EXPORT_SYMBOL_GPL(ar71xx_device_start);
+int ar71xx_device_stopped(u32 mask)
+{
+ unsigned long flags;
+ u32 t;
+
+ switch (ar71xx_soc) {
+ case AR71XX_SOC_AR7130:
+ case AR71XX_SOC_AR7141:
+ case AR71XX_SOC_AR7161:
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
+
+ case AR71XX_SOC_AR7240:
+ case AR71XX_SOC_AR7241:
+ case AR71XX_SOC_AR7242:
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
+
+ case AR71XX_SOC_AR9130:
+ case AR71XX_SOC_AR9132:
+ spin_lock_irqsave(&ar71xx_device_lock, flags);
+ t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
+ spin_unlock_irqrestore(&ar71xx_device_lock, flags);
+ break;
+
+ default:
+ BUG();
+ }
+
+ return ((t & mask) == mask);
+}
+EXPORT_SYMBOL_GPL(ar71xx_device_stopped);
+
void ar71xx_ddr_flush(u32 reg)
{
ar71xx_ddr_wr(reg, 1);
- while ((ar71xx_ddr_rr(reg) & 0x1));
+ while ((ar71xx_ddr_rr(reg) & 0x1))
+ ;
ar71xx_ddr_wr(reg, 1);
- while ((ar71xx_ddr_rr(reg) & 0x1));
+ while ((ar71xx_ddr_rr(reg) & 0x1))
+ ;
}
EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
+void ar71xx_flash_acquire(void)
+{
+ mutex_lock(&ar71xx_flash_mutex);
+}
+EXPORT_SYMBOL_GPL(ar71xx_flash_acquire);
+
+void ar71xx_flash_release(void)
+{
+ mutex_unlock(&ar71xx_flash_mutex);
+}
+EXPORT_SYMBOL_GPL(ar71xx_flash_release);