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usb: musb: make multipoint optional

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The multipoint handling under MUSB is optional, and some parts (like the
Blackfin processor) do not implement support for it.

Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Remy Bohmer <linux@bohmer.net>
This commit is contained in:
Bryan Wu 2009-12-16 22:04:00 -05:00 committed by Remy Bohmer
parent df402ba381
commit 8868fd443b
1 changed files with 20 additions and 0 deletions
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20
drivers/usb/musb/musb_hcd.c
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@ -402,11 +402,13 @@ static void config_hub_port(struct usb_device *dev, u8 ep)
if (dev->parent->children[chid] == dev)
break;
#ifndef MUSB_NO_MULTIPOINT
/* configure the hub address and the port address */
writeb(hub, &musbr->tar[ep].txhubaddr);
writeb((chid + 1), &musbr->tar[ep].txhubport);
writeb(hub, &musbr->tar[ep].rxhubaddr);
writeb((chid + 1), &musbr->tar[ep].rxhubport);
#endif
}
/*
@ -415,7 +417,9 @@ static void config_hub_port(struct usb_device *dev, u8 ep)
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int len, struct devrequest *setup)
{
#ifndef MUSB_NO_MULTIPOINT
int devnum = usb_pipedevice(pipe);
#endif
u16 csr;
u8 devspeed;
@ -423,9 +427,11 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
writeb(MUSB_CONTROL_EP, &musbr->index);
csr = readw(&musbr->txcsr);
#ifndef MUSB_NO_MULTIPOINT
/* target addr and (for multipoint) hub addr/port */
writeb(devnum, &musbr->tar[MUSB_CONTROL_EP].txfuncaddr);
writeb(devnum, &musbr->tar[MUSB_CONTROL_EP].rxfuncaddr);
#endif
/* configure the hub address and the port number as required */
devspeed = get_dev_speed(dev);
@ -435,10 +441,12 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
writeb(devspeed << 6, &musbr->txtype);
} else {
writeb(musb_cfg.musb_speed << 6, &musbr->txtype);
#ifndef MUSB_NO_MULTIPOINT
writeb(0, &musbr->tar[MUSB_CONTROL_EP].txhubaddr);
writeb(0, &musbr->tar[MUSB_CONTROL_EP].txhubport);
writeb(0, &musbr->tar[MUSB_CONTROL_EP].rxhubaddr);
writeb(0, &musbr->tar[MUSB_CONTROL_EP].rxhubport);
#endif
}
/* Control transfer setup phase */
@ -497,7 +505,9 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
{
int dir_out = usb_pipeout(pipe);
int ep = usb_pipeendpoint(pipe);
#ifndef MUSB_NO_MULTIPOINT
int devnum = usb_pipedevice(pipe);
#endif
u8 type;
u16 csr;
u32 txlen = 0;
@ -507,11 +517,13 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
/* select bulk endpoint */
writeb(MUSB_BULK_EP, &musbr->index);
#ifndef MUSB_NO_MULTIPOINT
/* write the address of the device */
if (dir_out)
writeb(devnum, &musbr->tar[MUSB_BULK_EP].txfuncaddr);
else
writeb(devnum, &musbr->tar[MUSB_BULK_EP].rxfuncaddr);
#endif
/* configure the hub address and the port number as required */
devspeed = get_dev_speed(dev);
@ -524,6 +536,7 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
*/
config_hub_port(dev, MUSB_BULK_EP);
} else {
#ifndef MUSB_NO_MULTIPOINT
if (dir_out) {
writeb(0, &musbr->tar[MUSB_BULK_EP].txhubaddr);
writeb(0, &musbr->tar[MUSB_BULK_EP].txhubport);
@ -531,6 +544,7 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
writeb(0, &musbr->tar[MUSB_BULK_EP].rxhubaddr);
writeb(0, &musbr->tar[MUSB_BULK_EP].rxhubport);
}
#endif
devspeed = musb_cfg.musb_speed;
}
@ -696,7 +710,9 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe,
{
int dir_out = usb_pipeout(pipe);
int ep = usb_pipeendpoint(pipe);
#ifndef MUSB_NO_MULTIPOINT
int devnum = usb_pipedevice(pipe);
#endif
u8 type;
u16 csr;
u32 txlen = 0;
@ -706,11 +722,13 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe,
/* select interrupt endpoint */
writeb(MUSB_INTR_EP, &musbr->index);
#ifndef MUSB_NO_MULTIPOINT
/* write the address of the device */
if (dir_out)
writeb(devnum, &musbr->tar[MUSB_INTR_EP].txfuncaddr);
else
writeb(devnum, &musbr->tar[MUSB_INTR_EP].rxfuncaddr);
#endif
/* configure the hub address and the port number as required */
devspeed = get_dev_speed(dev);
@ -723,6 +741,7 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe,
*/
config_hub_port(dev, MUSB_INTR_EP);
} else {
#ifndef MUSB_NO_MULTIPOINT
if (dir_out) {
writeb(0, &musbr->tar[MUSB_INTR_EP].txhubaddr);
writeb(0, &musbr->tar[MUSB_INTR_EP].txhubport);
@ -730,6 +749,7 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe,
writeb(0, &musbr->tar[MUSB_INTR_EP].rxhubaddr);
writeb(0, &musbr->tar[MUSB_INTR_EP].rxhubport);
}
#endif
devspeed = musb_cfg.musb_speed;
}