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usb: musb: Make busctl_offset an io-op rather then a define

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The Allwinner (sunxi) implementation of the musb has its busctl registers
indexed by the MUSB_INDEX register rather then in a flat address space.

This commit turns MUSB_BUSCTL_OFFSET from a macro into an io-op which can
be overridden from the platform ops.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Hans de Goede 2015-03-20 20:11:12 +01:00 committed by Felipe Balbi
parent 0cb74b3dc4
commit 6cc2af6d50
5 changed files with 72 additions and 52 deletions
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34
drivers/usb/musb/musb_core.c
View File

@ -251,6 +251,11 @@ static u32 musb_indexed_ep_offset(u8 epnum, u16 offset)
return 0x10 + offset;
}
static u32 musb_default_busctl_offset(u8 epnum, u16 offset)
{
return 0x80 + (0x08 * epnum) + offset;
}
static u8 musb_default_readb(const void __iomem *addr, unsigned offset)
{
return __raw_readb(addr + offset);
@ -2052,6 +2057,11 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
else
musb->io.fifo_offset = musb_default_fifo_offset;
if (musb->ops->busctl_offset)
musb->io.busctl_offset = musb->ops->busctl_offset;
else
musb->io.busctl_offset = musb_default_busctl_offset;
if (musb->ops->readb)
musb_readb = musb->ops->readb;
if (musb->ops->writeb)
@ -2332,18 +2342,18 @@ static void musb_save_context(struct musb *musb)
musb_readb(epio, MUSB_RXINTERVAL);
musb->context.index_regs[i].txfunaddr =
musb_read_txfunaddr(musb_base, i);
musb_read_txfunaddr(musb, i);
musb->context.index_regs[i].txhubaddr =
musb_read_txhubaddr(musb_base, i);
musb_read_txhubaddr(musb, i);
musb->context.index_regs[i].txhubport =
musb_read_txhubport(musb_base, i);
musb_read_txhubport(musb, i);
musb->context.index_regs[i].rxfunaddr =
musb_read_rxfunaddr(musb_base, i);
musb_read_rxfunaddr(musb, i);
musb->context.index_regs[i].rxhubaddr =
musb_read_rxhubaddr(musb_base, i);
musb_read_rxhubaddr(musb, i);
musb->context.index_regs[i].rxhubport =
musb_read_rxhubport(musb_base, i);
musb_read_rxhubport(musb, i);
}
}
@ -2411,18 +2421,18 @@ static void musb_restore_context(struct musb *musb)
musb_writeb(epio, MUSB_RXINTERVAL,
musb->context.index_regs[i].rxinterval);
musb_write_txfunaddr(musb_base, i,
musb_write_txfunaddr(musb, i,
musb->context.index_regs[i].txfunaddr);
musb_write_txhubaddr(musb_base, i,
musb_write_txhubaddr(musb, i,
musb->context.index_regs[i].txhubaddr);
musb_write_txhubport(musb_base, i,
musb_write_txhubport(musb, i,
musb->context.index_regs[i].txhubport);
musb_write_rxfunaddr(musb_base, i,
musb_write_rxfunaddr(musb, i,
musb->context.index_regs[i].rxfunaddr);
musb_write_rxhubaddr(musb_base, i,
musb_write_rxhubaddr(musb, i,
musb->context.index_regs[i].rxhubaddr);
musb_write_rxhubport(musb_base, i,
musb_write_rxhubport(musb, i,
musb->context.index_regs[i].rxhubport);
}
musb_writeb(musb_base, MUSB_INDEX, musb->context.index);

5
drivers/usb/musb/musb_core.h
View File

@ -67,7 +67,6 @@ struct musb_ep;
#include "musb_dma.h"
#include "musb_io.h"
#include "musb_regs.h"
#include "musb_gadget.h"
#include <linux/usb/hcd.h>
@ -191,6 +190,7 @@ struct musb_platform_ops {
void (*ep_select)(void __iomem *mbase, u8 epnum);
u16 fifo_mode;
u32 (*fifo_offset)(u8 epnum);
u32 (*busctl_offset)(u8 epnum, u16 offset);
u8 (*readb)(const void __iomem *addr, unsigned offset);
void (*writeb)(void __iomem *addr, unsigned offset, u8 data);
u16 (*readw)(const void __iomem *addr, unsigned offset);
@ -444,6 +444,9 @@ struct musb {
#endif
};
/* This must be included after struct musb is defined */
#include "musb_regs.h"
static inline struct musb *gadget_to_musb(struct usb_gadget *g)
{
return container_of(g, struct musb, g);

12
drivers/usb/musb/musb_host.c
View File

@ -595,9 +595,9 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, u8 epnum)
/* target addr and (for multipoint) hub addr/port */
if (musb->is_multipoint) {
musb_write_rxfunaddr(musb->mregs, epnum, qh->addr_reg);
musb_write_rxhubaddr(musb->mregs, epnum, qh->h_addr_reg);
musb_write_rxhubport(musb->mregs, epnum, qh->h_port_reg);
musb_write_rxfunaddr(musb, epnum, qh->addr_reg);
musb_write_rxhubaddr(musb, epnum, qh->h_addr_reg);
musb_write_rxhubport(musb, epnum, qh->h_port_reg);
} else
musb_writeb(musb->mregs, MUSB_FADDR, qh->addr_reg);
@ -836,9 +836,9 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
/* target addr and (for multipoint) hub addr/port */
if (musb->is_multipoint) {
musb_write_txfunaddr(mbase, epnum, qh->addr_reg);
musb_write_txhubaddr(mbase, epnum, qh->h_addr_reg);
musb_write_txhubport(mbase, epnum, qh->h_port_reg);
musb_write_txfunaddr(musb, epnum, qh->addr_reg);
musb_write_txhubaddr(musb, epnum, qh->h_addr_reg);
musb_write_txhubport(musb, epnum, qh->h_port_reg);
/* FIXME if !epnum, do the same for RX ... */
} else
musb_writeb(mbase, MUSB_FADDR, qh->addr_reg);

2
drivers/usb/musb/musb_io.h
View File

@ -47,6 +47,7 @@
* @fifo_offset: platform specific function to get fifo offset
* @read_fifo: platform specific function to read fifo
* @write_fifo: platform specific function to write fifo
* @busctl_offset: platform specific function to get busctl offset
*/
struct musb_io {
u32 quirks;
@ -55,6 +56,7 @@ struct musb_io {
u32 (*fifo_offset)(u8 epnum);
void (*read_fifo)(struct musb_hw_ep *hw_ep, u16 len, u8 *buf);
void (*write_fifo)(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf);
u32 (*busctl_offset)(u8 epnum, u16 offset);
};
/* Do not add new entries here, add them the struct musb_io instead */

71
drivers/usb/musb/musb_regs.h
View File

@ -300,9 +300,6 @@
#define MUSB_RXHUBADDR 0x06
#define MUSB_RXHUBPORT 0x07
#define MUSB_BUSCTL_OFFSET(_epnum, _offset) \
(0x80 + (8*(_epnum)) + (_offset))
static inline void musb_write_txfifosz(void __iomem *mbase, u8 c_size)
{
musb_writeb(mbase, MUSB_TXFIFOSZ, c_size);
@ -364,76 +361,84 @@ static inline u16 musb_read_hwvers(void __iomem *mbase)
return musb_readw(mbase, MUSB_HWVERS);
}
static inline void musb_write_rxfunaddr(void __iomem *mbase, u8 epnum,
static inline void musb_write_rxfunaddr(struct musb *musb, u8 epnum,
u8 qh_addr_reg)
{
musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXFUNCADDR),
qh_addr_reg);
musb_writeb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_RXFUNCADDR),
qh_addr_reg);
}
static inline void musb_write_rxhubaddr(void __iomem *mbase, u8 epnum,
static inline void musb_write_rxhubaddr(struct musb *musb, u8 epnum,
u8 qh_h_addr_reg)
{
musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBADDR),
musb_writeb(musb->mregs, musb->io.busctl_offset(epnum, MUSB_RXHUBADDR),
qh_h_addr_reg);
}
static inline void musb_write_rxhubport(void __iomem *mbase, u8 epnum,
static inline void musb_write_rxhubport(struct musb *musb, u8 epnum,
u8 qh_h_port_reg)
{
musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBPORT),
musb_writeb(musb->mregs, musb->io.busctl_offset(epnum, MUSB_RXHUBPORT),
qh_h_port_reg);
}
static inline void musb_write_txfunaddr(void __iomem *mbase, u8 epnum,
static inline void musb_write_txfunaddr(struct musb *musb, u8 epnum,
u8 qh_addr_reg)
{
musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXFUNCADDR),
musb_writeb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_TXFUNCADDR),
qh_addr_reg);
}
static inline void musb_write_txhubaddr(struct musb *musb, u8 epnum,
u8 qh_addr_reg)
{
musb_writeb(musb->mregs, musb->io.busctl_offset(epnum, MUSB_TXHUBADDR),
qh_addr_reg);
}
static inline void musb_write_txhubaddr(void __iomem *mbase, u8 epnum,
u8 qh_addr_reg)
{
musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBADDR),
qh_addr_reg);
}
static inline void musb_write_txhubport(void __iomem *mbase, u8 epnum,
static inline void musb_write_txhubport(struct musb *musb, u8 epnum,
u8 qh_h_port_reg)
{
musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBPORT),
musb_writeb(musb->mregs, musb->io.busctl_offset(epnum, MUSB_TXHUBPORT),
qh_h_port_reg);
}
static inline u8 musb_read_rxfunaddr(void __iomem *mbase, u8 epnum)
static inline u8 musb_read_rxfunaddr(struct musb *musb, u8 epnum)
{
return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXFUNCADDR));
return musb_readb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_RXFUNCADDR));
}
static inline u8 musb_read_rxhubaddr(void __iomem *mbase, u8 epnum)
static inline u8 musb_read_rxhubaddr(struct musb *musb, u8 epnum)
{
return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBADDR));
return musb_readb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_RXHUBADDR));
}
static inline u8 musb_read_rxhubport(void __iomem *mbase, u8 epnum)
static inline u8 musb_read_rxhubport(struct musb *musb, u8 epnum)
{
return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBPORT));
return musb_readb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_RXHUBPORT));
}
static inline u8 musb_read_txfunaddr(void __iomem *mbase, u8 epnum)
static inline u8 musb_read_txfunaddr(struct musb *musb, u8 epnum)
{
return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXFUNCADDR));
return musb_readb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_TXFUNCADDR));
}
static inline u8 musb_read_txhubaddr(void __iomem *mbase, u8 epnum)
static inline u8 musb_read_txhubaddr(struct musb *musb, u8 epnum)
{
return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBADDR));
return musb_readb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_TXHUBADDR));
}
static inline u8 musb_read_txhubport(void __iomem *mbase, u8 epnum)
static inline u8 musb_read_txhubport(struct musb *musb, u8 epnum)
{
return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBPORT));
return musb_readb(musb->mregs,
musb->io.busctl_offset(epnum, MUSB_TXHUBPORT));
}
#else /* CONFIG_BLACKFIN */