5450ac88dc
MUSB currently breaks badly if we try to build in support for multiple platforms. This also happens if done as loadable modules, which is not nice for distros. Let's fix the issue by adding new struct musb_io for the IO access functions that the platform code can populate. Note that we don't want to use the current ops as that's really platform_data and and set as a const. This should allow eventually adding function pointers also for the DMA code to struct musb_io, but that's a whole different set of patches. For now, let's just fix the PIO access. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
140 lines
4.5 KiB
C
140 lines
4.5 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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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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/**
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* struct musb_io - IO functions for MUSB
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* @quirks: platform specific flags
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* @ep_offset: platform specific function to get end point offset
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* @ep_select: platform specific function to select end point
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* @fifo_offset: platform specific function to get fifo offset
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* @read_fifo: platform specific function to read fifo
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* @write_fifo: platform specific function to write fifo
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*/
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struct musb_io {
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u32 quirks;
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u32 (*ep_offset)(u8 epnum, u16 offset);
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void (*ep_select)(void __iomem *mbase, u8 epnum);
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u32 (*fifo_offset)(u8 epnum);
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void (*read_fifo)(struct musb_hw_ep *hw_ep, u16 len, u8 *buf);
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void (*write_fifo)(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf);
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};
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#ifndef CONFIG_BLACKFIN
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/* NOTE: these offsets are all in bytes */
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static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
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{ return __raw_readw(addr + offset); }
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static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
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{ return __raw_readl(addr + offset); }
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static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
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{ __raw_writew(data, addr + offset); }
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static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
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{ __raw_writel(data, addr + offset); }
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#if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
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/*
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* TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
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*/
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static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
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{
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u16 tmp;
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u8 val;
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tmp = __raw_readw(addr + (offset & ~1));
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if (offset & 1)
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val = (tmp >> 8);
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else
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val = tmp & 0xff;
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return val;
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}
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static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
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{
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u16 tmp;
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tmp = __raw_readw(addr + (offset & ~1));
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if (offset & 1)
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tmp = (data << 8) | (tmp & 0xff);
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else
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tmp = (tmp & 0xff00) | data;
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__raw_writew(tmp, addr + (offset & ~1));
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}
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#else
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static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
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{ return __raw_readb(addr + offset); }
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static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
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{ __raw_writeb(data, addr + offset); }
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#endif /* CONFIG_USB_MUSB_TUSB6010 */
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#else
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static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
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{ return (u8) (bfin_read16(addr + offset)); }
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static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
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{ return bfin_read16(addr + offset); }
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static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
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{ return (u32) (bfin_read16(addr + offset)); }
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static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
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{ bfin_write16(addr + offset, (u16) data); }
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static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
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{ bfin_write16(addr + offset, data); }
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static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
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{ bfin_write16(addr + offset, (u16) data); }
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#endif /* CONFIG_BLACKFIN */
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#endif
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