/* * Wireless Host Controller (WHC) interrupt handling. * * Copyright (C) 2007 Cambridge Silicon Radio Ltd. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include "../../wusbcore/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); } 'h' value='nds-private-remove'/>
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authorZach Ploskey <zach@ploskey.com>2017-01-22 00:47:19 -0800
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2017-01-22 12:47:06 +0200
commitcfee5d63767b2e7997c1f36420d008abbe61565c (patch)
treec66a512525d224f9675c33a8d156e0f058db1de6 /tools/power/acpi
parent5a00b6c2438460b870a451f14593fc40d3c7edf6 (diff)
platform/x86: ideapad-laptop: handle ACPI event 1
On Ideapad laptops, ACPI event 1 is currently not handled. Many models log "ideapad_laptop: Unknown event: 1" every 20 seconds or so while running on battery power. Some convertible laptops receive this event when switching in and out of tablet mode. This adds and additional case for event 1 in ideapad_acpi_notify to call ideapad_input_report(priv, vpc_bit), so that the event is reported to userspace and we avoid unnecessary logging. Fixes bug #107481 (https://bugzilla.kernel.org/show_bug.cgi?id=107481) Fixes bug #65751 (https://bugzilla.kernel.org/show_bug.cgi?id=65751) Signed-off-by: Zach Ploskey <zach@ploskey.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'tools/power/acpi')