threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
162 lines
4.4 KiB
C
162 lines
4.4 KiB
C
/*
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* MUSB OTG driver register I/O
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*
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* Copyright 2005 Mentor Graphics Corporation
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* Copyright (C) 2005-2006 by Texas Instruments
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* Copyright (C) 2006-2007 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef __MUSB_LINUX_PLATFORM_ARCH_H__
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#define __MUSB_LINUX_PLATFORM_ARCH_H__
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#include <linux/io.h>
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#include <linux/spinlock.h>
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extern bool mtk_usb_power;
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#ifdef CONFIG_MTK_MUSB_PORT0_LOWPOWER_MODE
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extern int usb20_clk_prepared_cnt;
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extern void mt_usb_clock_prepare(struct musb *musb);
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extern void mt_usb_clock_unprepare(struct musb *musb);
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#endif
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extern bool usb_enable_clock(bool enable);
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extern spinlock_t usb_io_lock;
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static inline u16 musb_readw(const void __iomem *addr, unsigned int offset)
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{
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u16 rc = 0;
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if (likely(mtk_usb_power)) {
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rc = readw(addr + offset);
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} else {
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unsigned long flags = 0;
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spin_lock_irqsave(&usb_io_lock, flags);
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usb_enable_clock(true);
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DBG(1, "[MUSB]:access %s function when usb clock is off 0x%X\n",
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__func__, offset);
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rc = readw(addr + offset);
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usb_enable_clock(false);
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spin_unlock_irqrestore(&usb_io_lock, flags);
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}
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return rc;
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}
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static inline u32
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musb_readl(const void __iomem *addr, unsigned int offset)
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{
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u32 rc = 0;
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if (likely(mtk_usb_power)) {
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rc = readl(addr + offset);
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} else {
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unsigned long flags = 0;
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spin_lock_irqsave(&usb_io_lock, flags);
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usb_enable_clock(true);
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DBG(1, "[MUSB]:access %s function when usb clock is off 0x%X\n",
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__func__, offset);
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rc = readl(addr + offset);
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usb_enable_clock(false);
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spin_unlock_irqrestore(&usb_io_lock, flags);
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}
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return rc;
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}
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static inline void
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musb_writew(void __iomem *addr, unsigned int offset, u16 data)
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{
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if (likely(mtk_usb_power)) {
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writew(data, addr + offset);
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} else {
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unsigned long flags = 0;
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spin_lock_irqsave(&usb_io_lock, flags);
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usb_enable_clock(true);
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DBG(1, "[MUSB]:access %s function when usb clock is off 0x%X\n",
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__func__, offset);
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writew(data, addr + offset);
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usb_enable_clock(false);
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spin_unlock_irqrestore(&usb_io_lock, flags);
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}
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}
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static inline void
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musb_writel(void __iomem *addr, unsigned int offset, u32 data)
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{
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if (likely(mtk_usb_power)) {
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writel(data, addr + offset);
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} else {
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unsigned long flags = 0;
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spin_lock_irqsave(&usb_io_lock, flags);
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usb_enable_clock(true);
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DBG(1, "[MUSB]:access %s function when usb clock is off 0x%X\n",
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__func__, offset);
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writel(data, addr + offset);
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usb_enable_clock(false);
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spin_unlock_irqrestore(&usb_io_lock, flags);
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}
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}
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static inline u8 musb_readb(const void __iomem *addr, unsigned int offset)
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{
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u8 rc = 0;
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if (likely(mtk_usb_power)) {
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rc = readb(addr + offset);
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} else {
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unsigned long flags = 0;
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spin_lock_irqsave(&usb_io_lock, flags);
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usb_enable_clock(true);
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DBG(1, "[MUSB]:access %s function when usb clock is off 0x%X\n",
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__func__, offset);
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rc = readb(addr + offset);
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usb_enable_clock(false);
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spin_unlock_irqrestore(&usb_io_lock, flags);
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}
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return rc;
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}
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static inline void musb_writeb
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(void __iomem *addr, unsigned int offset, u8 data)
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{
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if (likely(mtk_usb_power)) {
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writeb(data, addr + offset);
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} else {
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unsigned long flags = 0;
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spin_lock_irqsave(&usb_io_lock, flags);
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usb_enable_clock(true);
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DBG(1, "[MUSB]:access %s function when usb clock is off 0x%X\n",
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__func__, offset);
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writeb(data, addr + offset);
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usb_enable_clock(false);
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spin_unlock_irqrestore(&usb_io_lock, flags);
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}
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}
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#endif
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