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wusb: do a proper channel stop

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When stopping the WUSB channel the host should send Channel Stop IEs giving
the WUSB Channel Time of the last MMC.  Both WHCI and HWA hosts provide a
channel stop command for this.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
This commit is contained in:
David Vrabel
2008-10-27 15:42:31 +00:00
parent d409f3bf47
commit 4d2bea4ca0
7 changed files with 80 additions and 74 deletions
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2
drivers/usb/host/whci/whcd.h
View File

@@ -136,7 +136,7 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
/* wusb.c */
int whc_wusbhc_start(struct wusbhc *wusbhc);
void whc_wusbhc_stop(struct wusbhc *wusbhc);
void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay);
int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
u8 handle, struct wuie_hdr *wuie);
int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);

2
drivers/usb/host/whci/whci-hc.h
View File

@@ -410,6 +410,8 @@ struct dn_buf_entry {
# define WUSBDNTSCTRL_SLOTS(s) ((s) << 0)
#define WUSBTIME 0x68
# define WUSBTIME_CHANNEL_TIME_MASK 0x00ffffff
#define WUSBBPST 0x6c
#define WUSBDIBUPDATED 0x70

15
drivers/usb/host/whci/wusb.c
View File

@@ -64,8 +64,9 @@ static int whc_update_di(struct whc *whc, int idx)
}
/*
* WHCI starts and stops MMCs based on there being a valid GTK so
* these need only start/stop the asynchronous and periodic schedules.
* WHCI starts MMCs based on there being a valid GTK so these need
* only start/stop the asynchronous and periodic schedules and send a
* channel stop command.
*/
int whc_wusbhc_start(struct wusbhc *wusbhc)
@@ -78,12 +79,20 @@ int whc_wusbhc_start(struct wusbhc *wusbhc)
return 0;
}
void whc_wusbhc_stop(struct wusbhc *wusbhc)
void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay)
{
struct whc *whc = wusbhc_to_whc(wusbhc);
u32 stop_time, now_time;
int ret;
pzl_stop(whc);
asl_stop(whc);
now_time = le_readl(whc->base + WUSBTIME) & WUSBTIME_CHANNEL_TIME_MASK;
stop_time = (now_time + ((delay * 8) << 7)) & 0x00ffffff;
ret = whc_do_gencmd(whc, WUSBGENCMDSTS_CHAN_STOP, stop_time, NULL, 0);
if (ret == 0)
msleep(delay);
}
int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,