From 4d2bea4ca0adb4cebfbf89d34869c74081c42577 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 27 Oct 2008 15:42:31 +0000 Subject: wusb: do a proper channel stop 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 --- drivers/usb/host/whci/whcd.h | 2 +- drivers/usb/host/whci/whci-hc.h | 2 ++ drivers/usb/host/whci/wusb.c | 15 ++++++++++++--- 3 files changed, 15 insertions(+), 4 deletions(-) (limited to 'drivers/usb/host/whci') diff --git a/drivers/usb/host/whci/whcd.h b/drivers/usb/host/whci/whcd.h index 1d2a53bd39fd..1bbb8cb6bf80 100644 --- a/drivers/usb/host/whci/whcd.h +++ b/drivers/usb/host/whci/whcd.h @@ -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); diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h index bff1eb7a35cf..51df7e313b38 100644 --- a/drivers/usb/host/whci/whci-hc.h +++ b/drivers/usb/host/whci/whci-hc.h @@ -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 diff --git a/drivers/usb/host/whci/wusb.c b/drivers/usb/host/whci/wusb.c index 66e4ddcd961d..2befd475def4 100644 --- a/drivers/usb/host/whci/wusb.c +++ b/drivers/usb/host/whci/wusb.c @@ -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, -- cgit v1.2.1