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usb: musb: Change to use new IO access

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Change to use new IO access. This allows us to build in multiple
MUSB glue layers.

[ balbi@ti.com : switch to EXPORT_SYMBOL_GPL()
	fix long lines ]

Cc: Fabio Baltieri <fabio.baltieri@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Tony Lindgren 2014-11-24 11:05:02 -08:00 committed by Felipe Balbi
parent cc92f6818f
commit 1b40fc57a5
7 changed files with 145 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/usb/musb/am35x.c
View File

@ -408,7 +408,7 @@ static int am35x_musb_exit(struct musb *musb)
}
/* AM35x supports only 32bit read operation */
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
static void am35x_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
void __iomem *fifo = hw_ep->fifo;
u32 val;
@ -441,6 +441,7 @@ static const struct musb_platform_ops am35x_ops = {
.init = am35x_musb_init,
.exit = am35x_musb_exit,
.read_fifo = am35x_read_fifo,
.enable = am35x_musb_enable,
.disable = am35x_musb_disable,

8
drivers/usb/musb/blackfin.c
View File

@ -71,7 +71,7 @@ static void binf_writel(void __iomem *addr, unsigned offset, u32 data)
/*
* Load an endpoint's FIFO
*/
void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
static void bfin_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
{
struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
@ -135,7 +135,7 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
/*
* Unload an endpoint's FIFO
*/
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
static void bfin_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
@ -474,8 +474,8 @@ static const struct musb_platform_ops bfin_ops = {
.writew = bfin_writew,
.readl = bfin_readl,
.writel = bfin_writel,
.read_fifo = musb_read_fifo,
.write_fifo = musb_write_fifo,
.read_fifo = bfin_read_fifo,
.write_fifo = bfin_write_fifo,
.enable = bfin_musb_enable,
.disable = bfin_musb_disable,

141
drivers/usb/musb/musb_core.c
View File

@ -224,12 +224,46 @@ static struct usb_phy_io_ops musb_ulpi_access = {
/*-------------------------------------------------------------------------*/
#if !defined(CONFIG_USB_MUSB_TUSB6010) && !defined(CONFIG_USB_MUSB_BLACKFIN)
static u32 musb_default_fifo_offset(u8 epnum)
{
return 0x20 + (epnum * 4);
}
static u8 musb_default_readb(const void __iomem *addr, unsigned offset)
{
return __raw_readb(addr + offset);
}
static void musb_default_writeb(void __iomem *addr, unsigned offset, u8 data)
{
__raw_writeb(data, addr + offset);
}
static u16 musb_default_readw(const void __iomem *addr, unsigned offset)
{
return __raw_readw(addr + offset);
}
static void musb_default_writew(void __iomem *addr, unsigned offset, u16 data)
{
__raw_writew(data, addr + offset);
}
static u32 musb_default_readl(const void __iomem *addr, unsigned offset)
{
return __raw_readl(addr + offset);
}
static void musb_default_writel(void __iomem *addr, unsigned offset, u32 data)
{
__raw_writel(data, addr + offset);
}
/*
* Load an endpoint's FIFO
*/
void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
static void musb_default_write_fifo(struct musb_hw_ep *hw_ep, u16 len,
const u8 *src)
{
struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
@ -270,11 +304,10 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
}
}
#if !defined(CONFIG_USB_MUSB_AM35X)
/*
* Unload an endpoint's FIFO
*/
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
static void musb_default_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
@ -312,10 +345,40 @@ void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
ioread8_rep(fifo, dst, len);
}
}
#endif
#endif /* normal PIO */
/*
* Old style IO functions
*/
u8 (*musb_readb)(const void __iomem *addr, unsigned offset);
EXPORT_SYMBOL_GPL(musb_readb);
void (*musb_writeb)(void __iomem *addr, unsigned offset, u8 data);
EXPORT_SYMBOL_GPL(musb_writeb);
u16 (*musb_readw)(const void __iomem *addr, unsigned offset);
EXPORT_SYMBOL_GPL(musb_readw);
void (*musb_writew)(void __iomem *addr, unsigned offset, u16 data);
EXPORT_SYMBOL_GPL(musb_writew);
u32 (*musb_readl)(const void __iomem *addr, unsigned offset);
EXPORT_SYMBOL_GPL(musb_readl);
void (*musb_writel)(void __iomem *addr, unsigned offset, u32 data);
EXPORT_SYMBOL_GPL(musb_writel);
/*
* New style IO functions
*/
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
return hw_ep->musb->io.read_fifo(hw_ep, len, dst);
}
void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
{
return hw_ep->musb->io.write_fifo(hw_ep, len, src);
}
/*-------------------------------------------------------------------------*/
@ -1456,17 +1519,22 @@ static int musb_core_init(u16 musb_type, struct musb *musb)
for (i = 0; i < musb->nr_endpoints; i++) {
struct musb_hw_ep *hw_ep = musb->endpoints + i;
hw_ep->fifo = MUSB_FIFO_OFFSET(i) + mbase;
hw_ep->fifo = musb->io.fifo_offset(i) + mbase;
#if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
hw_ep->fifo_async = musb->async + 0x400 + MUSB_FIFO_OFFSET(i);
hw_ep->fifo_sync = musb->sync + 0x400 + MUSB_FIFO_OFFSET(i);
hw_ep->fifo_sync_va =
musb->sync_va + 0x400 + MUSB_FIFO_OFFSET(i);
if (musb->io.quirks & MUSB_IN_TUSB) {
hw_ep->fifo_async = musb->async + 0x400 +
musb->io.fifo_offset(i);
hw_ep->fifo_sync = musb->sync + 0x400 +
musb->io.fifo_offset(i);
hw_ep->fifo_sync_va =
musb->sync_va + 0x400 + musb->io.fifo_offset(i);
if (i == 0)
hw_ep->conf = mbase - 0x400 + TUSB_EP0_CONF;
else
hw_ep->conf = mbase + 0x400 + (((i - 1) & 0xf) << 2);
if (i == 0)
hw_ep->conf = mbase - 0x400 + TUSB_EP0_CONF;
else
hw_ep->conf = mbase + 0x400 +
(((i - 1) & 0xf) << 2);
}
#endif
hw_ep->regs = MUSB_EP_OFFSET(i, 0) + mbase;
@ -1903,6 +1971,18 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
musb->ops = plat->platform_ops;
musb->port_mode = plat->mode;
/*
* Initialize the default IO functions. At least omap2430 needs
* these early. We initialize the platform specific IO functions
* later on.
*/
musb_readb = musb_default_readb;
musb_writeb = musb_default_writeb;
musb_readw = musb_default_readw;
musb_writew = musb_default_writew;
musb_readl = musb_default_readl;
musb_writel = musb_default_writel;
/* The musb_platform_init() call:
* - adjusts musb->mregs
* - sets the musb->isr
@ -1924,6 +2004,37 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
goto fail2;
}
if (musb->ops->quirks)
musb->io.quirks = musb->ops->quirks;
if (musb->ops->fifo_offset)
musb->io.fifo_offset = musb->ops->fifo_offset;
else
musb->io.fifo_offset = musb_default_fifo_offset;
if (musb->ops->readb)
musb_readb = musb->ops->readb;
if (musb->ops->writeb)
musb_writeb = musb->ops->writeb;
if (musb->ops->readw)
musb_readw = musb->ops->readw;
if (musb->ops->writew)
musb_writew = musb->ops->writew;
if (musb->ops->readl)
musb_readl = musb->ops->readl;
if (musb->ops->writel)
musb_writel = musb->ops->writel;
if (musb->ops->read_fifo)
musb->io.read_fifo = musb->ops->read_fifo;
else
musb->io.read_fifo = musb_default_read_fifo;
if (musb->ops->write_fifo)
musb->io.write_fifo = musb->ops->write_fifo;
else
musb->io.write_fifo = musb_default_write_fifo;
if (!musb->xceiv->io_ops) {
musb->xceiv->io_dev = musb->controller;
musb->xceiv->io_priv = musb->mregs;

88
drivers/usb/musb/musb_io.h
View File

@ -55,86 +55,12 @@ struct musb_io {
void (*write_fifo)(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf);
};
#ifndef CONFIG_BLACKFIN
/* NOTE: these offsets are all in bytes */
static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
{ return __raw_readw(addr + offset); }
static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
{ return __raw_readl(addr + offset); }
static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
{ __raw_writew(data, addr + offset); }
static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
{ __raw_writel(data, addr + offset); }
#if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
/*
* TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
*/
static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
{
u16 tmp;
u8 val;
tmp = __raw_readw(addr + (offset & ~1));
if (offset & 1)
val = (tmp >> 8);
else
val = tmp & 0xff;
return val;
}
static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
{
u16 tmp;
tmp = __raw_readw(addr + (offset & ~1));
if (offset & 1)
tmp = (data << 8) | (tmp & 0xff);
else
tmp = (tmp & 0xff00) | data;
__raw_writew(tmp, addr + (offset & ~1));
}
#else
static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
{ return __raw_readb(addr + offset); }
static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
{ __raw_writeb(data, addr + offset); }
#endif /* CONFIG_USB_MUSB_TUSB6010 */
#else
static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
{ return (u8) (bfin_read16(addr + offset)); }
static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
{ return bfin_read16(addr + offset); }
static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
{ return (u32) (bfin_read16(addr + offset)); }
static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
{ bfin_write16(addr + offset, (u16) data); }
static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
{ bfin_write16(addr + offset, data); }
static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
{ bfin_write16(addr + offset, (u16) data); }
#endif /* CONFIG_BLACKFIN */
/* Do not add new entries here, add them the struct musb_io instead */
extern u8 (*musb_readb)(const void __iomem *addr, unsigned offset);
extern void (*musb_writeb)(void __iomem *addr, unsigned offset, u8 data);
extern u16 (*musb_readw)(const void __iomem *addr, unsigned offset);
extern void (*musb_writew)(void __iomem *addr, unsigned offset, u16 data);
extern u32 (*musb_readl)(const void __iomem *addr, unsigned offset);
extern void (*musb_writel)(void __iomem *addr, unsigned offset, u32 data);
#endif

12
drivers/usb/musb/musb_regs.h
View File

@ -239,14 +239,6 @@
#define MUSB_INDEX 0x0E /* 8 bit */
#define MUSB_TESTMODE 0x0F /* 8 bit */
/* Get offset for a given FIFO from musb->mregs */
#if defined(CONFIG_USB_MUSB_TUSB6010) || \
defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
#define MUSB_FIFO_OFFSET(epnum) (0x200 + ((epnum) * 0x20))
#else
#define MUSB_FIFO_OFFSET(epnum) (0x20 + ((epnum) * 4))
#endif
/*
* Additional Control Registers
*/
@ -480,10 +472,6 @@ static inline u8 musb_read_txhubport(void __iomem *mbase, u8 epnum)
#define MUSB_INDEX USB_OFFSET(USB_INDEX) /* 8 bit */
#define MUSB_TESTMODE USB_OFFSET(USB_TESTMODE)/* 8 bit */
/* Get offset for a given FIFO from musb->mregs */
#define MUSB_FIFO_OFFSET(epnum) \
(USB_OFFSET(USB_EP0_FIFO) + ((epnum) * 8))
/*
* Additional Control Registers
*/

8
drivers/usb/musb/tusb6010.c
View File

@ -208,7 +208,7 @@ static inline void tusb_fifo_read_unaligned(void __iomem *fifo,
}
}
void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf)
static void tusb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf)
{
struct musb *musb = hw_ep->musb;
void __iomem *ep_conf = hw_ep->conf;
@ -258,7 +258,7 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf)
tusb_fifo_write_unaligned(fifo, buf, len);
}
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *buf)
static void tusb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *buf)
{
struct musb *musb = hw_ep->musb;
void __iomem *ep_conf = hw_ep->conf;
@ -1177,8 +1177,8 @@ static const struct musb_platform_ops tusb_ops = {
.fifo_offset = tusb_fifo_offset,
.readb = tusb_readb,
.writeb = tusb_writeb,
.read_fifo = musb_read_fifo,
.write_fifo = musb_write_fifo,
.read_fifo = tusb_read_fifo,
.write_fifo = tusb_write_fifo,
.enable = tusb_musb_enable,
.disable = tusb_musb_disable,

4
drivers/usb/musb/ux500_dma.c
View File

@ -91,9 +91,9 @@ static bool ux500_configure_channel(struct dma_channel *channel,
struct scatterlist sg;
struct dma_slave_config slave_conf;
enum dma_slave_buswidth addr_width;
dma_addr_t usb_fifo_addr = (MUSB_FIFO_OFFSET(hw_ep->epnum) +
ux500_channel->controller->phy_base);
struct musb *musb = ux500_channel->controller->private_data;
dma_addr_t usb_fifo_addr = (musb->io.fifo_offset(hw_ep->epnum) +
ux500_channel->controller->phy_base);
dev_dbg(musb->controller,
"packet_sz=%d, mode=%d, dma_addr=0x%llx, len=%d is_tx=%d\n",