Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/oss/emu10k1/irqmgr.c b/sound/oss/emu10k1/irqmgr.c
new file mode 100644
index 0000000..d19b464
--- /dev/null
+++ b/sound/oss/emu10k1/irqmgr.c
@@ -0,0 +1,113 @@
+/*
+ **********************************************************************
+ * irqmgr.c - IRQ manager for emu10k1 driver
+ * Copyright 1999, 2000 Creative Labs, Inc.
+ *
+ **********************************************************************
+ *
+ * Date Author Summary of changes
+ * ---- ------ ------------------
+ * October 20, 1999 Bertrand Lee base code release
+ *
+ **********************************************************************
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
+ * USA.
+ *
+ **********************************************************************
+ */
+
+#include "hwaccess.h"
+#include "8010.h"
+#include "cardmi.h"
+#include "cardmo.h"
+#include "irqmgr.h"
+
+/* Interrupt handler */
+
+irqreturn_t emu10k1_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct emu10k1_card *card = (struct emu10k1_card *) dev_id;
+ u32 irqstatus, irqstatus_tmp;
+ int handled = 0;
+
+ DPD(4, "emu10k1_interrupt called, irq = %u\n", irq);
+
+ /*
+ ** NOTE :
+ ** We do a 'while loop' here cos on certain machines, with both
+ ** playback and recording going on at the same time, IRQs will
+ ** stop coming in after a while. Checking IPND indeed shows that
+ ** there are interrupts pending but the PIC says no IRQs pending.
+ ** I suspect that some boards need edge-triggered IRQs but are not
+ ** getting that condition if we don't completely clear the IPND
+ ** (make sure no more interrupts are pending).
+ ** - Eric
+ */
+
+ while ((irqstatus = inl(card->iobase + IPR))) {
+ DPD(4, "irq status %#x\n", irqstatus);
+
+ irqstatus_tmp = irqstatus;
+
+ if (irqstatus & IRQTYPE_TIMER) {
+ emu10k1_timer_irqhandler(card);
+ irqstatus &= ~IRQTYPE_TIMER;
+ }
+
+ if (irqstatus & IRQTYPE_DSP) {
+ emu10k1_dsp_irqhandler(card);
+ irqstatus &= ~IRQTYPE_DSP;
+ }
+
+ if (irqstatus & IRQTYPE_MPUIN) {
+ emu10k1_mpuin_irqhandler(card);
+ irqstatus &= ~IRQTYPE_MPUIN;
+ }
+
+ if (irqstatus & IRQTYPE_MPUOUT) {
+ emu10k1_mpuout_irqhandler(card);
+ irqstatus &= ~IRQTYPE_MPUOUT;
+ }
+
+ if (irqstatus & IPR_MUTE) {
+ emu10k1_mute_irqhandler(card);
+ irqstatus &=~IPR_MUTE;
+ }
+
+ if (irqstatus & IPR_VOLINCR) {
+ emu10k1_volincr_irqhandler(card);
+ irqstatus &=~IPR_VOLINCR;
+ }
+
+ if (irqstatus & IPR_VOLDECR) {
+ emu10k1_voldecr_irqhandler(card);
+ irqstatus &=~IPR_VOLDECR;
+ }
+
+ if (irqstatus){
+ printk(KERN_ERR "emu10k1: Warning, unhandled interrupt: %#08x\n", irqstatus);
+ //make sure any interrupts we don't handle are disabled:
+ emu10k1_irq_disable(card, ~(INTE_MIDIRXENABLE | INTE_MIDITXENABLE | INTE_INTERVALTIMERENB |
+ INTE_VOLDECRENABLE | INTE_VOLINCRENABLE | INTE_MUTEENABLE |
+ INTE_FXDSPENABLE));
+ }
+
+ /* acknowledge interrupt */
+ outl(irqstatus_tmp, card->iobase + IPR);
+ handled = 1;
+ }
+ return IRQ_RETVAL(handled);
+}