USB: chipidea: add vbus detect for udc
Using vbus valid interrupt to detect vbus. Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Tested-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Richard Zhao <richard.zhao@freescale.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Родитель
984f753cf1
Коммит
8c4fc03195
|
@ -139,6 +139,7 @@ struct ci13xxx {
|
|||
enum ci_role role;
|
||||
bool is_otg;
|
||||
struct work_struct work;
|
||||
struct work_struct vbus_work;
|
||||
struct workqueue_struct *wq;
|
||||
|
||||
struct dma_pool *qh_pool;
|
||||
|
|
|
@ -305,6 +305,18 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci)
|
|||
return reg;
|
||||
}
|
||||
|
||||
static void hw_enable_vbus_intr(struct ci13xxx *ci)
|
||||
{
|
||||
hw_write(ci, OP_OTGSC, OTGSC_AVVIS, OTGSC_AVVIS);
|
||||
hw_write(ci, OP_OTGSC, OTGSC_AVVIE, OTGSC_AVVIE);
|
||||
queue_work(ci->wq, &ci->vbus_work);
|
||||
}
|
||||
|
||||
static void hw_disable_vbus_intr(struct ci13xxx *ci)
|
||||
{
|
||||
hw_write(ci, OP_OTGSC, OTGSC_AVVIE, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* hw_test_and_clear_setup_guard: test & clear setup guard (execute without
|
||||
* interruption)
|
||||
|
@ -371,6 +383,16 @@ static int hw_usb_reset(struct ci13xxx *ci)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void vbus_work(struct work_struct *work)
|
||||
{
|
||||
struct ci13xxx *ci = container_of(work, struct ci13xxx, vbus_work);
|
||||
|
||||
if (hw_read(ci, OP_OTGSC, OTGSC_AVV))
|
||||
usb_gadget_vbus_connect(&ci->gadget);
|
||||
else
|
||||
usb_gadget_vbus_disconnect(&ci->gadget);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
* UTIL block
|
||||
*****************************************************************************/
|
||||
|
@ -1370,6 +1392,7 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
|
|||
if (is_active) {
|
||||
pm_runtime_get_sync(&_gadget->dev);
|
||||
hw_device_reset(ci, USBMODE_CM_DC);
|
||||
hw_enable_vbus_intr(ci);
|
||||
hw_device_state(ci, ci->ep0out->qh.dma);
|
||||
} else {
|
||||
hw_device_state(ci, 0);
|
||||
|
@ -1544,8 +1567,10 @@ static int ci13xxx_start(struct usb_gadget *gadget,
|
|||
pm_runtime_get_sync(&ci->gadget.dev);
|
||||
if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
|
||||
if (ci->vbus_active) {
|
||||
if (ci->platdata->flags & CI13XXX_REGS_SHARED)
|
||||
if (ci->platdata->flags & CI13XXX_REGS_SHARED) {
|
||||
hw_device_reset(ci, USBMODE_CM_DC);
|
||||
hw_enable_vbus_intr(ci);
|
||||
}
|
||||
} else {
|
||||
pm_runtime_put_sync(&ci->gadget.dev);
|
||||
goto done;
|
||||
|
@ -1651,6 +1676,13 @@ static irqreturn_t udc_irq(struct ci13xxx *ci)
|
|||
} else {
|
||||
retval = IRQ_NONE;
|
||||
}
|
||||
|
||||
intr = hw_read(ci, OP_OTGSC, ~0);
|
||||
hw_write(ci, OP_OTGSC, ~0, intr);
|
||||
|
||||
if (intr & (OTGSC_AVVIE & OTGSC_AVVIS))
|
||||
queue_work(ci->wq, &ci->vbus_work);
|
||||
|
||||
spin_unlock(&ci->lock);
|
||||
|
||||
return retval;
|
||||
|
@ -1726,6 +1758,7 @@ static int udc_start(struct ci13xxx *ci)
|
|||
retval = hw_device_reset(ci, USBMODE_CM_DC);
|
||||
if (retval)
|
||||
goto put_transceiver;
|
||||
hw_enable_vbus_intr(ci);
|
||||
}
|
||||
|
||||
retval = device_register(&ci->gadget.dev);
|
||||
|
@ -1788,6 +1821,9 @@ static void udc_stop(struct ci13xxx *ci)
|
|||
if (ci == NULL)
|
||||
return;
|
||||
|
||||
hw_disable_vbus_intr(ci);
|
||||
cancel_work_sync(&ci->vbus_work);
|
||||
|
||||
usb_del_gadget_udc(&ci->gadget);
|
||||
|
||||
destroy_eps(ci);
|
||||
|
@ -1828,6 +1864,7 @@ int ci_hdrc_gadget_init(struct ci13xxx *ci)
|
|||
rdrv->irq = udc_irq;
|
||||
rdrv->name = "gadget";
|
||||
ci->roles[CI_ROLE_GADGET] = rdrv;
|
||||
INIT_WORK(&ci->vbus_work, vbus_work);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
Загрузка…
Ссылка в новой задаче