From: Tony Lindgren <tony@atomide.com>
To: linux-omap-open-source@linux.omap.com
Subject: [PATCH 8/12] musb_hdrc: Add timer for returning to host mode from HNP
Date: Thu, 11 Oct 2007 10:05:21 -0700 [thread overview]
Message-ID: <11921223352146-git-send-email-tony@atomide.com> (raw)
In-Reply-To: <11921223331118-git-send-email-tony@atomide.com>
This seems like the only way to deal with interrupted HNP if waiting
as a_wait_bcon.
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index b438036..efaa4fb 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -309,11 +309,17 @@ void musb_otg_timer_func(unsigned long data)
unsigned long flags;
spin_lock_irqsave(&musb->lock, flags);
- if (musb->xceiv.state == OTG_STATE_B_WAIT_ACON) {
- DBG(1, "HNP: B_WAIT_ACON timeout; back to B_PERIPHERAL\n");
+ switch (musb->xceiv.state) {
+ case OTG_STATE_B_WAIT_ACON:
+ DBG(1, "HNP: b_wait_acon timeout; back to b_peripheral\n");
musb_g_disconnect(musb);
musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
musb->is_active = 0;
+ break;
+ case OTG_STATE_A_WAIT_BCON:
+ DBG(1, "HNP: a_wait_bcon timeout; back to a_host\n");
+ musb_hnp_stop(musb);
+ break;
}
spin_unlock_irqrestore(&musb->lock, flags);
}
@@ -649,10 +655,17 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
} else if (is_peripheral_capable()) {
DBG(1, "BUS RESET as %s\n", otg_state_string(musb));
switch (musb->xceiv.state) {
- case OTG_STATE_A_PERIPHERAL:
+#ifdef CONFIG_USB_OTG
case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */
+ DBG(1, "HNP: Setting timer as a_wait_bcon\n");
+ musb_otg_timer.data = (unsigned long)musb;
+ mod_timer(&musb_otg_timer, jiffies
+ + msecs_to_jiffies(100));
+ break;
+ case OTG_STATE_A_PERIPHERAL:
musb_hnp_stop(musb);
break;
+#endif
case OTG_STATE_B_IDLE:
musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
/* FALLTHROUGH */
--
1.5.2.5
next prev parent reply other threads:[~2007-10-11 17:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-11 17:05 [PATCH 0/12] musb_hdrc: Host and OTG updates Tony Lindgren
2007-10-11 17:05 ` [PATCH 1/12] musb_hdrc: Allow tusb3.0 and greater to use multichannel DMA Tony Lindgren
2007-10-11 17:05 ` [PATCH 2/12] musb_hdrc: Add more sysfs notify events Tony Lindgren
2007-10-11 17:05 ` [PATCH 3/12] musb_hdrc: Remove old sysfs entry cable, use mode instead Tony Lindgren
2007-10-11 17:05 ` [PATCH 4/12] musb_hdrc: Remove non-debug otg_state_string Tony Lindgren
2007-10-11 17:05 ` [PATCH 5/12] musb_hdrc: Fix host suspend handling, remove earlier hacks Tony Lindgren
2007-10-11 17:05 ` [PATCH 6/12] musb_hdrc: Improve tusb host state handling for a_idle Tony Lindgren
2007-10-11 17:05 ` [PATCH 7/12] musb_hdrc: Don't idle as host if VBUS timeout is 0 Tony Lindgren
2007-10-11 17:05 ` Tony Lindgren [this message]
2007-10-11 17:05 ` [PATCH 9/12] musb_hdrc: Make HNP more reliable Tony Lindgren
2007-10-11 17:05 ` [PATCH 10/12] musb_hdrc: Make vbus sysfs entry report current Vbus status Tony Lindgren
2007-10-11 17:05 ` [PATCH 11/12] musb_hdrc: Allow suspend if host is already suspended Tony Lindgren
2007-10-11 17:05 ` musb_hdrc: Fix compile if CONFIG_ARCH_OMAP_OTG is not set Tony Lindgren
2007-10-11 20:07 ` [PATCH 11/12] musb_hdrc: Allow suspend if host is already suspended Felipe Balbi
2007-10-11 20:21 ` David Brownell
2007-10-11 20:38 ` Felipe Balbi
2007-10-12 0:56 ` [PATCH 3/12] musb_hdrc: Remove old sysfs entry cable, use mode instead David Brownell
2007-10-12 20:32 ` [PATCH 0/12] musb_hdrc: Host and OTG updates Tony Lindgren
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=11921223352146-git-send-email-tony@atomide.com \
--to=tony@atomide.com \
--cc=linux-omap-open-source@linux.omap.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox