230 lines
6 KiB
C
230 lines
6 KiB
C
/*
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* AR71xx SoC routines
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*
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* Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/mutex.h>
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#include <linux/spinlock.h>
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#include <asm/mach-ar71xx/ar71xx.h>
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static DEFINE_MUTEX(ar71xx_flash_mutex);
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static DEFINE_SPINLOCK(ar71xx_device_lock);
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void __iomem *ar71xx_ddr_base;
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EXPORT_SYMBOL_GPL(ar71xx_ddr_base);
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void __iomem *ar71xx_pll_base;
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EXPORT_SYMBOL_GPL(ar71xx_pll_base);
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void __iomem *ar71xx_reset_base;
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EXPORT_SYMBOL_GPL(ar71xx_reset_base);
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void __iomem *ar71xx_gpio_base;
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EXPORT_SYMBOL_GPL(ar71xx_gpio_base);
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void __iomem *ar71xx_usb_ctrl_base;
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EXPORT_SYMBOL_GPL(ar71xx_usb_ctrl_base);
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void ar71xx_device_stop(u32 mask)
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{
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unsigned long flags;
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u32 mask_inv;
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u32 t;
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switch (ar71xx_soc) {
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case AR71XX_SOC_AR7130:
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case AR71XX_SOC_AR7141:
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case AR71XX_SOC_AR7161:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t | mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR7240:
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case AR71XX_SOC_AR7241:
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case AR71XX_SOC_AR7242:
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mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
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t |= mask;
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t &= ~mask_inv;
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ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9130:
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case AR71XX_SOC_AR9132:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t | mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9330:
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case AR71XX_SOC_AR9331:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR933X_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR933X_RESET_REG_RESET_MODULE, t | mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9341:
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case AR71XX_SOC_AR9342:
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case AR71XX_SOC_AR9344:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR934X_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR934X_RESET_REG_RESET_MODULE, t | mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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default:
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BUG();
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}
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}
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EXPORT_SYMBOL_GPL(ar71xx_device_stop);
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void ar71xx_device_start(u32 mask)
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{
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unsigned long flags;
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u32 mask_inv;
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u32 t;
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switch (ar71xx_soc) {
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case AR71XX_SOC_AR7130:
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case AR71XX_SOC_AR7141:
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case AR71XX_SOC_AR7161:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t & ~mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR7240:
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case AR71XX_SOC_AR7241:
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case AR71XX_SOC_AR7242:
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mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
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t &= ~mask;
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t |= mask_inv;
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ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9130:
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case AR71XX_SOC_AR9132:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t & ~mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9330:
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case AR71XX_SOC_AR9331:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR933X_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR933X_RESET_REG_RESET_MODULE, t & ~mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9341:
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case AR71XX_SOC_AR9342:
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case AR71XX_SOC_AR9344:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR934X_RESET_REG_RESET_MODULE);
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ar71xx_reset_wr(AR934X_RESET_REG_RESET_MODULE, t & ~mask);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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default:
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BUG();
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}
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}
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EXPORT_SYMBOL_GPL(ar71xx_device_start);
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int ar71xx_device_stopped(u32 mask)
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{
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unsigned long flags;
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u32 t;
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switch (ar71xx_soc) {
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case AR71XX_SOC_AR7130:
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case AR71XX_SOC_AR7141:
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case AR71XX_SOC_AR7161:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR7240:
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case AR71XX_SOC_AR7241:
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case AR71XX_SOC_AR7242:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9130:
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case AR71XX_SOC_AR9132:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9330:
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case AR71XX_SOC_AR9331:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR933X_RESET_REG_RESET_MODULE);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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case AR71XX_SOC_AR9341:
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case AR71XX_SOC_AR9342:
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case AR71XX_SOC_AR9344:
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spin_lock_irqsave(&ar71xx_device_lock, flags);
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t = ar71xx_reset_rr(AR934X_RESET_REG_RESET_MODULE);
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spin_unlock_irqrestore(&ar71xx_device_lock, flags);
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break;
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default:
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BUG();
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}
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return ((t & mask) == mask);
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}
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EXPORT_SYMBOL_GPL(ar71xx_device_stopped);
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void ar71xx_ddr_flush(u32 reg)
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{
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ar71xx_ddr_wr(reg, 1);
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while ((ar71xx_ddr_rr(reg) & 0x1))
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;
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ar71xx_ddr_wr(reg, 1);
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while ((ar71xx_ddr_rr(reg) & 0x1))
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;
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}
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EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
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void ar71xx_flash_acquire(void)
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{
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mutex_lock(&ar71xx_flash_mutex);
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}
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EXPORT_SYMBOL_GPL(ar71xx_flash_acquire);
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void ar71xx_flash_release(void)
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{
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mutex_unlock(&ar71xx_flash_mutex);
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}
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EXPORT_SYMBOL_GPL(ar71xx_flash_release);
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