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linux/sound/pci/au88x0/au88x0.h
Jason A. Donenfeld ee03c0f200 ALSA: au88x0: use explicitly signed char 
With char becoming unsigned by default, and with `char` alone being
ambiguous and based on architecture, signed chars need to be marked
explicitly as such. This fixes warnings like:

sound/pci/au88x0/au88x0_core.c:2029 vortex_adb_checkinout() warn: signedness bug returning '(-22)'
sound/pci/au88x0/au88x0_core.c:2046 vortex_adb_checkinout() warn: signedness bug returning '(-12)'
sound/pci/au88x0/au88x0_core.c:2125 vortex_adb_allocroute() warn: 'vortex_adb_checkinout(vortex, (0), en, 0)' is unsigned
sound/pci/au88x0/au88x0_core.c:2170 vortex_adb_allocroute() warn: 'vortex_adb_checkinout(vortex, stream->resources, en, 4)' is unsigned

As well, since one function returns errnos, return an `int` rather than
a `signed char`.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221024162929.536004-1-Jason@zx2c4.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-10-25 15:14:29 +02:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
*/
#ifndef __SOUND_AU88X0_H
#define __SOUND_AU88X0_H
#include <linux/pci.h>
#include <linux/io.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/mpu401.h>
#include <sound/hwdep.h>
#include <sound/ac97_codec.h>
#include <sound/tlv.h>
#ifndef CHIP_AU8820
#include "au88x0_eq.h"
#include "au88x0_a3d.h"
#endif
#ifndef CHIP_AU8810
#include "au88x0_wt.h"
#endif
#define hwread(x,y) readl((x)+(y))
#define hwwrite(x,y,z) writel((z),(x)+(y))
/* Vortex MPU401 defines. */
#define MIDI_CLOCK_DIV 0x61
/* Standart MPU401 defines. */
#define MPU401_RESET 0xff
#define MPU401_ENTER_UART 0x3f
#define MPU401_ACK 0xfe
// Get src register value to convert from x to y.
#define SRC_RATIO(x,y) ((((x<<15)/y) + 1)/2)
/* FIFO software state constants. */
#define FIFO_STOP 0
#define FIFO_START 1
#define FIFO_PAUSE 2
/* IRQ flags */
#define IRQ_ERR_MASK 0x00ff
#define IRQ_FATAL 0x0001
#define IRQ_PARITY 0x0002
#define IRQ_REG 0x0004
#define IRQ_FIFO 0x0008
#define IRQ_DMA 0x0010
#define IRQ_PCMOUT 0x0020 /* PCM OUT page crossing */
#define IRQ_TIMER 0x1000
#define IRQ_MIDI 0x2000
#define IRQ_MODEM 0x4000
/* ADB Resource */
#define VORTEX_RESOURCE_DMA 0x00000000
#define VORTEX_RESOURCE_SRC 0x00000001
#define VORTEX_RESOURCE_MIXIN 0x00000002
#define VORTEX_RESOURCE_MIXOUT 0x00000003
#define VORTEX_RESOURCE_A3D 0x00000004
#define VORTEX_RESOURCE_LAST 0x00000005
/* codec io: VORTEX_CODEC_IO bits */
#define VORTEX_CODEC_ID_SHIFT 24
#define VORTEX_CODEC_WRITE 0x00800000
#define VORTEX_CODEC_ADDSHIFT 16
#define VORTEX_CODEC_ADDMASK 0x7f0000
#define VORTEX_CODEC_DATSHIFT 0
#define VORTEX_CODEC_DATMASK 0xffff
/* Check for SDAC bit in "Extended audio ID" AC97 register */
//#define VORTEX_IS_QUAD(x) (((x)->codec == NULL) ? 0 : ((x)->codec->ext_id&0x80))
#define VORTEX_IS_QUAD(x) ((x)->isquad)
/* Check if chip has bug. */
#define IS_BAD_CHIP(x) (\
(x->rev == 0xfe && x->device == PCI_DEVICE_ID_AUREAL_VORTEX_2) || \
(x->rev == 0xfe && x->device == PCI_DEVICE_ID_AUREAL_ADVANTAGE))
/* PCM devices */
#define VORTEX_PCM_ADB 0
#define VORTEX_PCM_SPDIF 1
#define VORTEX_PCM_A3D 2
#define VORTEX_PCM_WT 3
#define VORTEX_PCM_I2S 4
#define VORTEX_PCM_LAST 5
#define MIX_CAPT(x) (vortex->mixcapt[x])
#define MIX_PLAYB(x) (vortex->mixplayb[x])
#define MIX_SPDIF(x) (vortex->mixspdif[x])
#define NR_WTPB 0x20 /* WT channels per each bank. */
#define NR_PCM 0x10
struct pcm_vol {
struct snd_kcontrol *kctl;
int active;
int dma;
int mixin[4];
int vol[4];
};
/* Structs */
typedef struct {
//int this_08; /* Still unknown */
int fifo_enabled; /* this_24 */
int fifo_status; /* this_1c */
u32 dma_ctrl; /* this_78 (ADB), this_7c (WT) */
int dma_unknown; /* this_74 (ADB), this_78 (WT). WDM: +8 */
int cfg0;
int cfg1;
int nr_ch; /* Nr of PCM channels in use */
int type; /* Output type (ac97, a3d, spdif, i2s, dsp) */
int dma; /* Hardware DMA index. */
int dir; /* Stream Direction. */
u32 resources[5];
/* Virtual page extender stuff */
int nr_periods;
int period_bytes;
int period_real;
int period_virt;
struct snd_pcm_substream *substream;
} stream_t;
typedef struct snd_vortex vortex_t;
struct snd_vortex {
/* ALSA structs. */
struct snd_card *card;
struct snd_pcm *pcm[VORTEX_PCM_LAST];
struct snd_rawmidi *rmidi; /* Legacy Midi interface. */
struct snd_ac97 *codec;
/* Stream structs. */
stream_t dma_adb[NR_ADB];
int spdif_sr;
#ifndef CHIP_AU8810
stream_t dma_wt[NR_WT];
wt_voice_t wt_voice[NR_WT]; /* WT register cache. */
s8 mixwt[(NR_WT / NR_WTPB) * 6]; /* WT mixin objects */
#endif
/* Global resources */
s8 mixcapt[2];
s8 mixplayb[4];
#ifndef CHIP_AU8820
s8 mixspdif[2];
s8 mixa3d[2]; /* mixers which collect all a3d streams. */
s8 mixxtlk[2]; /* crosstalk canceler mixer inputs. */
#endif
u32 fixed_res[5];
#ifndef CHIP_AU8820
/* Hardware equalizer structs */
eqlzr_t eq;
/* A3D structs */
a3dsrc_t a3d[NR_A3D];
/* Xtalk canceler */
int xt_mode; /* 1: speakers, 0:headphones. */
#endif
struct pcm_vol pcm_vol[NR_PCM];
int isquad; /* cache of extended ID codec flag. */
/* Gameport stuff. */
struct gameport *gameport;
/* PCI hardware resources */
unsigned long io;
void __iomem *mmio;
unsigned int irq;
spinlock_t lock;
/* PCI device */
struct pci_dev *pci_dev;
u16 vendor;
u16 device;
u8 rev;
};
/* Functions. */
/* SRC */
static void vortex_adb_setsrc(vortex_t * vortex, int adbdma,
unsigned int cvrt, int dir);
/* DMA Engines. */
static void vortex_adbdma_setbuffers(vortex_t * vortex, int adbdma,
int size, int count);
static void vortex_adbdma_setmode(vortex_t * vortex, int adbdma, int ie,
int dir, int fmt, int d,
u32 offset);
static void vortex_adbdma_setstartbuffer(vortex_t * vortex, int adbdma, int sb);
#ifndef CHIP_AU8810
static void vortex_wtdma_setbuffers(vortex_t * vortex, int wtdma,
int size, int count);
static void vortex_wtdma_setmode(vortex_t * vortex, int wtdma, int ie, int fmt, int d, /*int e, */
u32 offset);
static void vortex_wtdma_setstartbuffer(vortex_t * vortex, int wtdma, int sb);
#endif
static void vortex_adbdma_startfifo(vortex_t * vortex, int adbdma);
//static void vortex_adbdma_stopfifo(vortex_t *vortex, int adbdma);
static void vortex_adbdma_pausefifo(vortex_t * vortex, int adbdma);
static void vortex_adbdma_resumefifo(vortex_t * vortex, int adbdma);
static inline int vortex_adbdma_getlinearpos(vortex_t * vortex, int adbdma);
static void vortex_adbdma_resetup(vortex_t *vortex, int adbdma);
#ifndef CHIP_AU8810
static void vortex_wtdma_startfifo(vortex_t * vortex, int wtdma);
static void vortex_wtdma_stopfifo(vortex_t * vortex, int wtdma);
static void vortex_wtdma_pausefifo(vortex_t * vortex, int wtdma);
static void vortex_wtdma_resumefifo(vortex_t * vortex, int wtdma);
static inline int vortex_wtdma_getlinearpos(vortex_t * vortex, int wtdma);
#endif
/* global stuff. */
static void vortex_codec_init(vortex_t * vortex);
static void vortex_codec_write(struct snd_ac97 * codec, unsigned short addr,
unsigned short data);
static unsigned short vortex_codec_read(struct snd_ac97 * codec, unsigned short addr);
static void vortex_spdif_init(vortex_t * vortex, int spdif_sr, int spdif_mode);
static int vortex_core_init(vortex_t * card);
static int vortex_core_shutdown(vortex_t * card);
static void vortex_enable_int(vortex_t * card);
static irqreturn_t vortex_interrupt(int irq, void *dev_id);
static int vortex_alsafmt_aspfmt(snd_pcm_format_t alsafmt, vortex_t *v);
/* Connection stuff. */
static void vortex_connect_default(vortex_t * vortex, int en);
static int vortex_adb_allocroute(vortex_t * vortex, int dma, int nr_ch,
int dir, int type, int subdev);
static int vortex_adb_checkinout(vortex_t * vortex, int resmap[], int out,
int restype);
#ifndef CHIP_AU8810
static int vortex_wt_allocroute(vortex_t * vortex, int dma, int nr_ch);
static void vortex_wt_connect(vortex_t * vortex, int en);
static void vortex_wt_init(vortex_t * vortex);
#endif
static void vortex_route(vortex_t * vortex, int en, unsigned char channel,
unsigned char source, unsigned char dest);
#if 0
static void vortex_routes(vortex_t * vortex, int en, unsigned char channel,
unsigned char source, unsigned char dest0,
unsigned char dest1);
#endif
static void vortex_connection_mixin_mix(vortex_t * vortex, int en,
unsigned char mixin,
unsigned char mix, int a);
static void vortex_mix_setinputvolumebyte(vortex_t * vortex,
unsigned char mix, int mixin,
unsigned char vol);
static void vortex_mix_setvolumebyte(vortex_t * vortex, unsigned char mix,
unsigned char vol);
/* A3D functions. */
#ifndef CHIP_AU8820
static void vortex_Vort3D_enable(vortex_t * v);
static void vortex_Vort3D_disable(vortex_t * v);
static void vortex_Vort3D_connect(vortex_t * vortex, int en);
static void vortex_Vort3D_InitializeSource(a3dsrc_t *a, int en, vortex_t *v);
#endif
/* Driver stuff. */
static int vortex_gameport_register(vortex_t * card);
static void vortex_gameport_unregister(vortex_t * card);
#ifndef CHIP_AU8820
static int vortex_eq_init(vortex_t * vortex);
static int vortex_eq_free(vortex_t * vortex);
#endif
/* ALSA stuff. */
static int snd_vortex_new_pcm(vortex_t * vortex, int idx, int nr);
static int snd_vortex_mixer(vortex_t * vortex);
static int snd_vortex_midi(vortex_t * vortex);
#endif
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