diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0501-usb-xhci-hack-xhci_urb_enqueue-to-support-hid.mousep.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0501-usb-xhci-hack-xhci_urb_enqueue-to-support-hid.mousep.patch | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0501-usb-xhci-hack-xhci_urb_enqueue-to-support-hid.mousep.patch b/target/linux/brcm2708/patches-4.19/950-0501-usb-xhci-hack-xhci_urb_enqueue-to-support-hid.mousep.patch deleted file mode 100644 index c48d16db91..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0501-usb-xhci-hack-xhci_urb_enqueue-to-support-hid.mousep.patch +++ /dev/null @@ -1,122 +0,0 @@ -From fa776ef749c924cd3ff3ffa257d7a63a27224399 Mon Sep 17 00:00:00 2001 -From: Jonathan Bell <jonathan@raspberrypi.org> -Date: Thu, 30 May 2019 10:38:40 +0100 -Subject: [PATCH] usb: xhci: hack xhci_urb_enqueue to support - hid.mousepoll behaviour - -xHCI creates endpoint contexts directly from the device's endpoint -data, so submitting URBs with urb->interval different from the hardware -interval has no effect. - -Add an explicit reconfiguration of the endpoint context when requested, -which will happen only when the interval is different from the cached -value. In practice, the reconfiguration only happens on the first URB -submitted for the endpoint. - -Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org> ---- - drivers/usb/host/xhci.c | 86 +++++++++++++++++++++++++++++++++++++++++ - 1 file changed, 86 insertions(+) - ---- a/drivers/usb/host/xhci.c -+++ b/drivers/usb/host/xhci.c -@@ -1425,6 +1425,87 @@ command_cleanup: - } - - /* -+ * RPI: Fixup endpoint intervals when requested -+ * - Check interval versus the (cached) endpoint context -+ * - set the endpoint interval to the new value -+ * - force an endpoint configure command -+ */ -+static void xhci_fixup_interval(struct xhci_hcd *xhci, struct urb *urb, -+ unsigned int slot_id, unsigned int ep_index) -+{ -+ struct xhci_ep_ctx *ep_ctx_out, *ep_ctx_in; -+ struct xhci_command *command; -+ struct xhci_input_control_ctx *ctrl_ctx; -+ struct xhci_virt_device *vdev; -+ int xhci_interval, ep_interval; -+ int ret; -+ unsigned long flags; -+ u32 ep_info_tmp; -+ -+ spin_lock_irqsave(&xhci->lock, flags); -+ -+ vdev = xhci->devs[slot_id]; -+ /* Get context-derived endpoint interval */ -+ ep_ctx_out = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); -+ ep_ctx_in = xhci_get_ep_ctx(xhci, vdev->in_ctx, ep_index); -+ xhci_interval = EP_INTERVAL_TO_UFRAMES(le32_to_cpu(ep_ctx_out->ep_info)); -+ ep_interval = urb->interval * 8; -+ -+ if (ep_interval == xhci_interval) { -+ spin_unlock_irqrestore(&xhci->lock, flags); -+ return; -+ } -+ -+ xhci_dbg(xhci, "Fixup interval ep_interval=%d xhci_interval=%d\n", -+ ep_interval, xhci_interval); -+ command = xhci_alloc_command_with_ctx(xhci, true, GFP_ATOMIC); -+ if (!command) { -+ /* Failure here is benign, poll at the original rate */ -+ spin_unlock_irqrestore(&xhci->lock, flags); -+ return; -+ } -+ -+ /* xHCI uses exponents for intervals... */ -+ xhci_interval = fls(ep_interval) - 1; -+ xhci_interval = clamp_val(xhci_interval, 3, 10); -+ ep_info_tmp = le32_to_cpu(ep_ctx_out->ep_info); -+ ep_info_tmp &= ~EP_INTERVAL(255); -+ ep_info_tmp |= EP_INTERVAL(xhci_interval); -+ -+ /* Keep the endpoint context up-to-date while issuing the command. */ -+ xhci_endpoint_copy(xhci, vdev->in_ctx, -+ vdev->out_ctx, ep_index); -+ ep_ctx_in->ep_info = cpu_to_le32(ep_info_tmp); -+ -+ /* -+ * We need to drop the lock, so take an explicit copy -+ * of the ep context. -+ */ -+ xhci_endpoint_copy(xhci, command->in_ctx, vdev->in_ctx, ep_index); -+ -+ ctrl_ctx = xhci_get_input_control_ctx(command->in_ctx); -+ if (!ctrl_ctx) { -+ xhci_warn(xhci, -+ "%s: Could not get input context, bad type.\n", -+ __func__); -+ spin_unlock_irqrestore(&xhci->lock, flags); -+ xhci_free_command(xhci, command); -+ return; -+ } -+ ctrl_ctx->add_flags = xhci_get_endpoint_flag_from_index(ep_index); -+ ctrl_ctx->drop_flags = 0; -+ -+ spin_unlock_irqrestore(&xhci->lock, flags); -+ -+ ret = xhci_configure_endpoint(xhci, urb->dev, command, -+ false, false); -+ if (ret) -+ xhci_warn(xhci, "%s: Configure endpoint failed: %d\n", -+ __func__, ret); -+ xhci_free_command(xhci, command); -+} -+ -+/* - * non-error returns are a promise to giveback() the urb later - * we drop ownership so next owner (or urb unlink) can get it - */ -@@ -1492,6 +1573,11 @@ static int xhci_urb_enqueue(struct usb_h - } - } - -+ if (usb_endpoint_xfer_int(&urb->ep->desc) && -+ (urb->dev->speed == USB_SPEED_FULL || -+ urb->dev->speed == USB_SPEED_LOW)) -+ xhci_fixup_interval(xhci, urb, slot_id, ep_index); -+ - spin_lock_irqsave(&xhci->lock, flags); - - if (xhci->xhc_state & XHCI_STATE_DYING) { |