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path: root/drivers/staging/wusbcore/host/whci/int.c
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Diffstat (limited to 'drivers/staging/wusbcore/host/whci/int.c')
-rw-r--r--drivers/staging/wusbcore/host/whci/int.c82
1 files changed, 0 insertions, 82 deletions
diff --git a/drivers/staging/wusbcore/host/whci/int.c b/drivers/staging/wusbcore/host/whci/int.c
deleted file mode 100644
index bdbe35e9366f..000000000000
--- a/drivers/staging/wusbcore/host/whci/int.c
+++ /dev/null
@@ -1,82 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Wireless Host Controller (WHC) interrupt handling.
- *
- * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
- */
-#include <linux/kernel.h>
-
-#include "../../../uwb/include/umc.h"
-#include "../../wusbhc.h"
-
-#include "whcd.h"
-
-static void transfer_done(struct whc *whc)
-{
- queue_work(whc->workqueue, &whc->async_work);
- queue_work(whc->workqueue, &whc->periodic_work);
-}
-
-irqreturn_t whc_int_handler(struct usb_hcd *hcd)
-{
- struct wusbhc *wusbhc = usb_hcd_to_wusbhc(hcd);
- struct whc *whc = wusbhc_to_whc(wusbhc);
- u32 sts;
-
- sts = le_readl(whc->base + WUSBSTS);
- if (!(sts & WUSBSTS_INT_MASK))
- return IRQ_NONE;
- le_writel(sts & WUSBSTS_INT_MASK, whc->base + WUSBSTS);
-
- if (sts & WUSBSTS_GEN_CMD_DONE)
- wake_up(&whc->cmd_wq);
-
- if (sts & WUSBSTS_HOST_ERR)
- dev_err(&whc->umc->dev, "FIXME: host system error\n");
-
- if (sts & WUSBSTS_ASYNC_SCHED_SYNCED)
- wake_up(&whc->async_list_wq);
-
- if (sts & WUSBSTS_PERIODIC_SCHED_SYNCED)
- wake_up(&whc->periodic_list_wq);
-
- if (sts & WUSBSTS_DNTS_INT)
- queue_work(whc->workqueue, &whc->dn_work);
-
- /*
- * A transfer completed (see [WHCI] section 4.7.1.2 for when
- * this occurs).
- */
- if (sts & (WUSBSTS_INT | WUSBSTS_ERR_INT))
- transfer_done(whc);
-
- return IRQ_HANDLED;
-}
-
-static int process_dn_buf(struct whc *whc)
-{
- struct wusbhc *wusbhc = &whc->wusbhc;
- struct dn_buf_entry *dn;
- int processed = 0;
-
- for (dn = whc->dn_buf; dn < whc->dn_buf + WHC_N_DN_ENTRIES; dn++) {
- if (dn->status & WHC_DN_STATUS_VALID) {
- wusbhc_handle_dn(wusbhc, dn->src_addr,
- (struct wusb_dn_hdr *)dn->dn_data,
- dn->msg_size);
- dn->status &= ~WHC_DN_STATUS_VALID;
- processed++;
- }
- }
- return processed;
-}
-
-void whc_dn_work(struct work_struct *work)
-{
- struct whc *whc = container_of(work, struct whc, dn_work);
- int processed;
-
- do {
- processed = process_dn_buf(whc);
- } while (processed);
-}