diff options
| author | Bastien Curutchet <bastien.curutchet@bootlin.com> | 2024-05-28 12:20:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-04 15:44:11 +0200 |
| commit | 4cb9f2c5a2df12355d0cbfdfaecc9221779d2eff (patch) | |
| tree | c2b5ab23ba499363df08fe7c80fb03b29c58668a /drivers/usb/musb | |
| parent | 608662dd6081f6d3149ecd250b1054d3eb2b7d2d (diff) | |
usb: musb: da8xx: Implement BABBLE recovery
There is no specific behaviour implemented to recover from a babble
error. When a BABBLE error happens, recovery fails as connected sticks
are no longer detected by the USB controller.
Implement the recover callback of the MUSB operation to reset the USB
controller when a BABBLE happens.
Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com>
Link: https://lore.kernel.org/r/20240528102026.40136-5-bastien.curutchet@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb')
| -rw-r--r-- | drivers/usb/musb/da8xx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index c5cf733673a2..fcf06dcf2d61 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -220,6 +220,13 @@ static void __maybe_unused da8xx_musb_try_idle(struct musb *musb, unsigned long mod_timer(&musb->dev_timer, timeout); } +static int da8xx_babble_recover(struct musb *musb) +{ + dev_dbg(musb->controller, "resetting controller to recover from babble\n"); + musb_writel(musb->ctrl_base, DA8XX_USB_CTRL_REG, DA8XX_SOFT_RESET_MASK); + return 0; +} + static irqreturn_t da8xx_musb_interrupt(int irq, void *hci) { struct musb *musb = hci; @@ -480,6 +487,7 @@ static const struct musb_platform_ops da8xx_ops = { #ifndef CONFIG_USB_MUSB_HOST .try_idle = da8xx_musb_try_idle, #endif + .recover = da8xx_babble_recover, .set_vbus = da8xx_musb_set_vbus, }; |