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path: root/drivers/usb/chipidea
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Diffstat (limited to 'drivers/usb/chipidea')
-rw-r--r--drivers/usb/chipidea/udc.c294
1 files changed, 154 insertions, 140 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 0dc56aebb807..7739c64ef259 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -949,6 +949,156 @@ __acquires(hwep->lock)
}
/**
+ * isr_setup_packet_handler: setup packet handler
+ * @ci: UDC descriptor
+ *
+ * This function handles setup packet
+ */
+static void isr_setup_packet_handler(struct ci_hdrc *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
+{
+ struct ci_hw_ep *hwep = &ci->ci_hw_ep[0];
+ struct usb_ctrlrequest req;
+ int type, num, dir, err = -EINVAL;
+ u8 tmode = 0;
+
+ /*
+ * Flush data and handshake transactions of previous
+ * setup packet.
+ */
+ _ep_nuke(ci->ep0out);
+ _ep_nuke(ci->ep0in);
+
+ /* read_setup_packet */
+ do {
+ hw_test_and_set_setup_guard(ci);
+ memcpy(&req, &hwep->qh.ptr->setup, sizeof(req));
+ } while (!hw_test_and_clear_setup_guard(ci));
+
+ type = req.bRequestType;
+
+ ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
+
+ switch (req.bRequest) {
+ case USB_REQ_CLEAR_FEATURE:
+ if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) ==
+ USB_ENDPOINT_HALT) {
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ dir = num & USB_ENDPOINT_DIR_MASK;
+ num &= USB_ENDPOINT_NUMBER_MASK;
+ if (dir) /* TX */
+ num += ci->hw_ep_max / 2;
+ if (!ci->ci_hw_ep[num].wedge) {
+ spin_unlock(&ci->lock);
+ err = usb_ep_clear_halt(
+ &ci->ci_hw_ep[num].ep);
+ spin_lock(&ci->lock);
+ if (err)
+ break;
+ }
+ err = isr_setup_status_phase(ci);
+ } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
+ le16_to_cpu(req.wValue) ==
+ USB_DEVICE_REMOTE_WAKEUP) {
+ if (req.wLength != 0)
+ break;
+ ci->remote_wakeup = 0;
+ err = isr_setup_status_phase(ci);
+ } else {
+ goto delegate;
+ }
+ break;
+ case USB_REQ_GET_STATUS:
+ if (type != (USB_DIR_IN|USB_RECIP_DEVICE) &&
+ type != (USB_DIR_IN|USB_RECIP_ENDPOINT) &&
+ type != (USB_DIR_IN|USB_RECIP_INTERFACE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 2 ||
+ le16_to_cpu(req.wValue) != 0)
+ break;
+ err = isr_get_status_response(ci, &req);
+ break;
+ case USB_REQ_SET_ADDRESS:
+ if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 0 ||
+ le16_to_cpu(req.wIndex) != 0)
+ break;
+ ci->address = (u8)le16_to_cpu(req.wValue);
+ ci->setaddr = true;
+ err = isr_setup_status_phase(ci);
+ break;
+ case USB_REQ_SET_FEATURE:
+ if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) ==
+ USB_ENDPOINT_HALT) {
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ dir = num & USB_ENDPOINT_DIR_MASK;
+ num &= USB_ENDPOINT_NUMBER_MASK;
+ if (dir) /* TX */
+ num += ci->hw_ep_max / 2;
+
+ spin_unlock(&ci->lock);
+ err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep);
+ spin_lock(&ci->lock);
+ if (!err)
+ isr_setup_status_phase(ci);
+ } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
+ if (req.wLength != 0)
+ break;
+ switch (le16_to_cpu(req.wValue)) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ ci->remote_wakeup = 1;
+ err = isr_setup_status_phase(ci);
+ break;
+ case USB_DEVICE_TEST_MODE:
+ tmode = le16_to_cpu(req.wIndex) >> 8;
+ switch (tmode) {
+ case TEST_J:
+ case TEST_K:
+ case TEST_SE0_NAK:
+ case TEST_PACKET:
+ case TEST_FORCE_EN:
+ ci->test_mode = tmode;
+ err = isr_setup_status_phase(
+ ci);
+ break;
+ default:
+ break;
+ }
+ default:
+ goto delegate;
+ }
+ } else {
+ goto delegate;
+ }
+ break;
+ default:
+delegate:
+ if (req.wLength == 0) /* no data phase */
+ ci->ep0_dir = TX;
+
+ spin_unlock(&ci->lock);
+ err = ci->driver->setup(&ci->gadget, &req);
+ spin_lock(&ci->lock);
+ break;
+ }
+
+ if (err < 0) {
+ spin_unlock(&ci->lock);
+ if (usb_ep_set_halt(&hwep->ep))
+ dev_err(ci->dev, "error: ep_set_halt\n");
+ spin_lock(&ci->lock);
+ }
+}
+
+/**
* isr_tr_complete_handler: transaction complete interrupt handler
* @ci: UDC descriptor
*
@@ -959,12 +1109,10 @@ __releases(ci->lock)
__acquires(ci->lock)
{
unsigned i;
- u8 tmode = 0;
+ int err;
for (i = 0; i < ci->hw_ep_max; i++) {
struct ci_hw_ep *hwep = &ci->ci_hw_ep[i];
- int type, num, dir, err = -EINVAL;
- struct usb_ctrlrequest req;
if (hwep->ep.desc == NULL)
continue; /* not configured */
@@ -985,143 +1133,9 @@ __acquires(ci->lock)
}
/* Only handle setup packet below */
- if (i != 0 ||
- !hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(0)))
- continue;
-
- /*
- * Flush data and handshake transactions of previous
- * setup packet.
- */
- _ep_nuke(ci->ep0out);
- _ep_nuke(ci->ep0in);
-
- /* read_setup_packet */
- do {
- hw_test_and_set_setup_guard(ci);
- memcpy(&req, &hwep->qh.ptr->setup, sizeof(req));
- } while (!hw_test_and_clear_setup_guard(ci));
-
- type = req.bRequestType;
-
- ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
-
- switch (req.bRequest) {
- case USB_REQ_CLEAR_FEATURE:
- if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
- le16_to_cpu(req.wValue) ==
- USB_ENDPOINT_HALT) {
- if (req.wLength != 0)
- break;
- num = le16_to_cpu(req.wIndex);
- dir = num & USB_ENDPOINT_DIR_MASK;
- num &= USB_ENDPOINT_NUMBER_MASK;
- if (dir) /* TX */
- num += ci->hw_ep_max/2;
- if (!ci->ci_hw_ep[num].wedge) {
- spin_unlock(&ci->lock);
- err = usb_ep_clear_halt(
- &ci->ci_hw_ep[num].ep);
- spin_lock(&ci->lock);
- if (err)
- break;
- }
- err = isr_setup_status_phase(ci);
- } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
- le16_to_cpu(req.wValue) ==
- USB_DEVICE_REMOTE_WAKEUP) {
- if (req.wLength != 0)
- break;
- ci->remote_wakeup = 0;
- err = isr_setup_status_phase(ci);
- } else {
- goto delegate;
- }
- break;
- case USB_REQ_GET_STATUS:
- if (type != (USB_DIR_IN|USB_RECIP_DEVICE) &&
- type != (USB_DIR_IN|USB_RECIP_ENDPOINT) &&
- type != (USB_DIR_IN|USB_RECIP_INTERFACE))
- goto delegate;
- if (le16_to_cpu(req.wLength) != 2 ||
- le16_to_cpu(req.wValue) != 0)
- break;
- err = isr_get_status_response(ci, &req);
- break;
- case USB_REQ_SET_ADDRESS:
- if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
- goto delegate;
- if (le16_to_cpu(req.wLength) != 0 ||
- le16_to_cpu(req.wIndex) != 0)
- break;
- ci->address = (u8)le16_to_cpu(req.wValue);
- ci->setaddr = true;
- err = isr_setup_status_phase(ci);
- break;
- case USB_REQ_SET_FEATURE:
- if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
- le16_to_cpu(req.wValue) ==
- USB_ENDPOINT_HALT) {
- if (req.wLength != 0)
- break;
- num = le16_to_cpu(req.wIndex);
- dir = num & USB_ENDPOINT_DIR_MASK;
- num &= USB_ENDPOINT_NUMBER_MASK;
- if (dir) /* TX */
- num += ci->hw_ep_max/2;
-
- spin_unlock(&ci->lock);
- err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep);
- spin_lock(&ci->lock);
- if (!err)
- isr_setup_status_phase(ci);
- } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
- if (req.wLength != 0)
- break;
- switch (le16_to_cpu(req.wValue)) {
- case USB_DEVICE_REMOTE_WAKEUP:
- ci->remote_wakeup = 1;
- err = isr_setup_status_phase(ci);
- break;
- case USB_DEVICE_TEST_MODE:
- tmode = le16_to_cpu(req.wIndex) >> 8;
- switch (tmode) {
- case TEST_J:
- case TEST_K:
- case TEST_SE0_NAK:
- case TEST_PACKET:
- case TEST_FORCE_EN:
- ci->test_mode = tmode;
- err = isr_setup_status_phase(
- ci);
- break;
- default:
- break;
- }
- default:
- goto delegate;
- }
- } else {
- goto delegate;
- }
- break;
- default:
-delegate:
- if (req.wLength == 0) /* no data phase */
- ci->ep0_dir = TX;
-
- spin_unlock(&ci->lock);
- err = ci->driver->setup(&ci->gadget, &req);
- spin_lock(&ci->lock);
- break;
- }
-
- if (err < 0) {
- spin_unlock(&ci->lock);
- if (usb_ep_set_halt(&hwep->ep))
- dev_err(ci->dev, "error: ep_set_halt\n");
- spin_lock(&ci->lock);
- }
+ if (i == 0 &&
+ hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(0)))
+ isr_setup_packet_handler(ci);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 13:08:04 +0000