summaryrefslogtreecommitdiff
path: root/drivers/usb/musb
diff options
context:
space:
mode:
authorTony Lindgren <tony@atomide.com>2016-09-13 05:48:29 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-13 18:20:02 +0300
commit2f3fd2c5bde1f94513c3dc311ae64494085ec371 (patch)
tree227beee9a4785f024cceae26ec5ec5d670ce51d1 /drivers/usb/musb
parent467d5c980709b262df288a0d0e7780f295c56882 (diff)
downloadlinux-2f3fd2c5bde1f94513c3dc311ae64494085ec371.tar.xz
usb: musb: Prepare dsps glue layer for PM runtime support
We want to be polling the state when nothing is connected. Let's change the polling logic in preparation for PM runtime support. Signed-off-by: Tony Lindgren <tony@atomide.com> [b-liu@ti.com: undo unnecessary line leading whitespace change] Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/musb_dsps.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 2537179636db..ef955c7afd52 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -247,6 +247,10 @@ static void otg_timer(unsigned long _musb)
spin_lock_irqsave(&musb->lock, flags);
switch (musb->xceiv->otg->state) {
+ case OTG_STATE_A_WAIT_VRISE:
+ mod_timer(&glue->timer, jiffies +
+ msecs_to_jiffies(wrp->poll_timeout));
+ break;
case OTG_STATE_A_WAIT_BCON:
musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
skip_session = 1;
@@ -338,7 +342,8 @@ static irqreturn_t dsps_interrupt(int irq, void *hci)
MUSB_HST_MODE(musb);
musb->xceiv->otg->default_a = 1;
musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
- del_timer(&glue->timer);
+ mod_timer(&glue->timer, jiffies +
+ msecs_to_jiffies(wrp->poll_timeout));
} else {
musb->is_active = 0;
MUSB_DEV_MODE(musb);
@@ -358,11 +363,17 @@ static irqreturn_t dsps_interrupt(int irq, void *hci)
if (musb->int_tx || musb->int_rx || musb->int_usb)
ret |= musb_interrupt(musb);
- /* Poll for ID change in OTG port mode */
- if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
- musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
+ /* Poll for ID change and connect */
+ switch (musb->xceiv->otg->state) {
+ case OTG_STATE_B_IDLE:
+ case OTG_STATE_A_WAIT_BCON:
mod_timer(&glue->timer, jiffies +
msecs_to_jiffies(wrp->poll_timeout));
+ break;
+ default:
+ break;
+ }
+
out:
spin_unlock_irqrestore(&musb->lock, flags);
@@ -461,6 +472,9 @@ static int dsps_musb_init(struct musb *musb)
musb_writeb(musb->mregs, MUSB_BABBLE_CTL, val);
}
+ mod_timer(&glue->timer, jiffies +
+ msecs_to_jiffies(glue->wrp->poll_timeout));
+
return dsps_musb_dbg_init(musb, glue);
}