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openwrt-xburst/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c
juhosg 6f45adddfe ar71xx: add AR933x specific glue for ar71xx_device{start,stop} 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27061 3c298f89-4303-0410-b956-a3cf2f4a3e73
2011-05-31 22:53:35 +00:00

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/*
* AR71xx SoC routines
*
* 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
* 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/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 __iomem *ar71xx_pll_base;
EXPORT_SYMBOL_GPL(ar71xx_pll_base);
void __iomem *ar71xx_reset_base;
EXPORT_SYMBOL_GPL(ar71xx_reset_base);
void __iomem *ar71xx_gpio_base;
EXPORT_SYMBOL_GPL(ar71xx_gpio_base);
void __iomem *ar71xx_usb_ctrl_base;
EXPORT_SYMBOL_GPL(ar71xx_usb_ctrl_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;
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;
case AR71XX_SOC_AR9330:
case AR71XX_SOC_AR9331:
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR933X_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR933X_RESET_REG_RESET_MODULE, t | mask);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR9341:
case AR71XX_SOC_AR9342:
case AR71XX_SOC_AR9344:
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR934X_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR934X_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;
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;
case AR71XX_SOC_AR9330:
case AR71XX_SOC_AR9331:
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR933X_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR933X_RESET_REG_RESET_MODULE, t & ~mask);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR9341:
case AR71XX_SOC_AR9342:
case AR71XX_SOC_AR9344:
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR934X_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR934X_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;
case AR71XX_SOC_AR9330:
case AR71XX_SOC_AR9331:
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR933X_RESET_REG_RESET_MODULE);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR9341:
case AR71XX_SOC_AR9342:
case AR71XX_SOC_AR9344:
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR934X_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))
;
ar71xx_ddr_wr(reg, 1);
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);
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