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kernel_optimize_test/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 
Based on 1 normalized pattern(s):

  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
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Sound Core PDAudioCF soundcard
*
* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
*/
#include <sound/core.h>
#include "pdaudiocf.h"
#include <sound/initval.h>
#include <asm/irq_regs.h>
/*
*
*/
irqreturn_t pdacf_interrupt(int irq, void *dev)
{
struct snd_pdacf *chip = dev;
unsigned short stat;
bool wake_thread = false;
if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|
PDAUDIOCF_STAT_IS_CONFIGURED|
PDAUDIOCF_STAT_IS_SUSPENDED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
return IRQ_HANDLED; /* IRQ_NONE here? */
stat = inw(chip->port + PDAUDIOCF_REG_ISR);
if (stat & (PDAUDIOCF_IRQLVL|PDAUDIOCF_IRQOVR)) {
if (stat & PDAUDIOCF_IRQOVR) /* should never happen */
snd_printk(KERN_ERR "PDAUDIOCF SRAM buffer overrun detected!\n");
if (chip->pcm_substream)
wake_thread = true;
if (!(stat & PDAUDIOCF_IRQAKM))
stat |= PDAUDIOCF_IRQAKM; /* check rate */
}
if (get_irq_regs() != NULL)
snd_ak4117_check_rate_and_errors(chip->ak4117, 0);
return wake_thread ? IRQ_WAKE_THREAD : IRQ_HANDLED;
}
static inline void pdacf_transfer_mono16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
{
while (size-- > 0) {
*dst++ = inw(rdp_port) ^ xor;
inw(rdp_port);
}
}
static inline void pdacf_transfer_mono32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
inw(rdp_port);
*dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
}
}
static inline void pdacf_transfer_stereo16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
{
while (size-- > 0) {
*dst++ = inw(rdp_port) ^ xor;
*dst++ = inw(rdp_port) ^ xor;
}
}
static inline void pdacf_transfer_stereo32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2, val3;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
val3 = inw(rdp_port);
*dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
*dst++ = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
}
}
static inline void pdacf_transfer_mono16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
{
while (size-- > 0) {
*dst++ = swab16(inw(rdp_port) ^ xor);
inw(rdp_port);
}
}
static inline void pdacf_transfer_mono32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
inw(rdp_port);
*dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor);
}
}
static inline void pdacf_transfer_stereo16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
{
while (size-- > 0) {
*dst++ = swab16(inw(rdp_port) ^ xor);
*dst++ = swab16(inw(rdp_port) ^ xor);
}
}
static inline void pdacf_transfer_stereo32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2, val3;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
val3 = inw(rdp_port);
*dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor);
*dst++ = swab32((((u32)val3 << 16) | (val2 & 0xff00)) ^ xor);
}
}
static inline void pdacf_transfer_mono24le(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2;
register u32 xval1;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
inw(rdp_port);
xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor;
*dst++ = (u8)(xval1 >> 8);
*dst++ = (u8)(xval1 >> 16);
*dst++ = (u8)(xval1 >> 24);
}
}
static inline void pdacf_transfer_mono24be(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2;
register u32 xval1;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
inw(rdp_port);
xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor;
*dst++ = (u8)(xval1 >> 24);
*dst++ = (u8)(xval1 >> 16);
*dst++ = (u8)(xval1 >> 8);
}
}
static inline void pdacf_transfer_stereo24le(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2, val3;
register u32 xval1, xval2;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
val3 = inw(rdp_port);
xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
*dst++ = (u8)(xval1 >> 8);
*dst++ = (u8)(xval1 >> 16);
*dst++ = (u8)(xval1 >> 24);
*dst++ = (u8)(xval2 >> 8);
*dst++ = (u8)(xval2 >> 16);
*dst++ = (u8)(xval2 >> 24);
}
}
static inline void pdacf_transfer_stereo24be(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
{
register u16 val1, val2, val3;
register u32 xval1, xval2;
while (size-- > 0) {
val1 = inw(rdp_port);
val2 = inw(rdp_port);
val3 = inw(rdp_port);
xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
*dst++ = (u8)(xval1 >> 24);
*dst++ = (u8)(xval1 >> 16);
*dst++ = (u8)(xval1 >> 8);
*dst++ = (u8)(xval2 >> 24);
*dst++ = (u8)(xval2 >> 16);
*dst++ = (u8)(xval2 >> 8);
}
}
static void pdacf_transfer(struct snd_pdacf *chip, unsigned int size, unsigned int off)
{
unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
unsigned int xor = chip->pcm_xor;
if (chip->pcm_sample == 3) {
if (chip->pcm_little) {
if (chip->pcm_channels == 1) {
pdacf_transfer_mono24le((char *)chip->pcm_area + (off * 3), xor, size, rdp_port);
} else {
pdacf_transfer_stereo24le((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
}
} else {
if (chip->pcm_channels == 1) {
pdacf_transfer_mono24be((char *)chip->pcm_area + (off * 3), xor, size, rdp_port);
} else {
pdacf_transfer_stereo24be((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
}
}
return;
}
if (chip->pcm_swab == 0) {
if (chip->pcm_channels == 1) {
if (chip->pcm_frame == 2) {
pdacf_transfer_mono16((u16 *)chip->pcm_area + off, xor, size, rdp_port);
} else {
pdacf_transfer_mono32((u32 *)chip->pcm_area + off, xor, size, rdp_port);
}
} else {
if (chip->pcm_frame == 2) {
pdacf_transfer_stereo16((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
} else {
pdacf_transfer_stereo32((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
}
}
} else {
if (chip->pcm_channels == 1) {
if (chip->pcm_frame == 2) {
pdacf_transfer_mono16sw((u16 *)chip->pcm_area + off, xor, size, rdp_port);
} else {
pdacf_transfer_mono32sw((u32 *)chip->pcm_area + off, xor, size, rdp_port);
}
} else {
if (chip->pcm_frame == 2) {
pdacf_transfer_stereo16sw((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
} else {
pdacf_transfer_stereo32sw((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
}
}
}
}
irqreturn_t pdacf_threaded_irq(int irq, void *dev)
{
struct snd_pdacf *chip = dev;
int size, off, cont, rdp, wdp;
if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|PDAUDIOCF_STAT_IS_CONFIGURED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
return IRQ_HANDLED;
if (chip->pcm_substream == NULL || chip->pcm_substream->runtime == NULL || !snd_pcm_running(chip->pcm_substream))
return IRQ_HANDLED;
rdp = inw(chip->port + PDAUDIOCF_REG_RDP);
wdp = inw(chip->port + PDAUDIOCF_REG_WDP);
/* printk(KERN_DEBUG "TASKLET: rdp = %x, wdp = %x\n", rdp, wdp); */
size = wdp - rdp;
if (size < 0)
size += 0x10000;
if (size == 0)
size = 0x10000;
size /= chip->pcm_frame;
if (size > 64)
size -= 32;
#if 0
chip->pcm_hwptr += size;
chip->pcm_hwptr %= chip->pcm_size;
chip->pcm_tdone += size;
if (chip->pcm_frame == 2) {
unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
while (size-- > 0) {
inw(rdp_port);
inw(rdp_port);
}
} else {
unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
while (size-- > 0) {
inw(rdp_port);
inw(rdp_port);
inw(rdp_port);
}
}
#else
off = chip->pcm_hwptr + chip->pcm_tdone;
off %= chip->pcm_size;
chip->pcm_tdone += size;
while (size > 0) {
cont = chip->pcm_size - off;
if (cont > size)
cont = size;
pdacf_transfer(chip, cont, off);
off += cont;
off %= chip->pcm_size;
size -= cont;
}
#endif
mutex_lock(&chip->reg_lock);
while (chip->pcm_tdone >= chip->pcm_period) {
chip->pcm_hwptr += chip->pcm_period;
chip->pcm_hwptr %= chip->pcm_size;
chip->pcm_tdone -= chip->pcm_period;
mutex_unlock(&chip->reg_lock);
snd_pcm_period_elapsed(chip->pcm_substream);
mutex_lock(&chip->reg_lock);
}
mutex_unlock(&chip->reg_lock);
return IRQ_HANDLED;
}
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