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linux/include/sound/wss.h
Lars-Peter Clausen fa60c06569 ALSA: wss: Remove (almost) always NULL parameters 
Most callers of snd_wss_pcm(), snd_wss_timer() and snd_cs4236_pcm() pass
NULL as the last parameter, some callers pass a pointer but never use it
after the function has been called and only a few callers pass a pointer and
actually use it. The later is only the case for snd_wss_pcm() for
snd_cs4236_pcm() and it is possible to get the same PCM object by accessing
the pcm field of the snd_wss struct that was passed as the first parameter.

This function removes the last parameters from the functions mentioned above
and updates the callers which used it to use chip->pcm instead. This allows
us to slightly simplify the functions since they don't have to check and set
the last parameter anymore which makes the code slightly shorter and
cleaner.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02 16:30:08 +01:00

236 lines
8.4 KiB
C
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#ifndef __SOUND_WSS_H
#define __SOUND_WSS_H
/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Definitions for CS4231 & InterWave chips & compatible chips
*
*
* 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
*
*/
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/timer.h>
#include <sound/cs4231-regs.h>
/* defines for codec.mode */
#define WSS_MODE_NONE 0x0000
#define WSS_MODE_PLAY 0x0001
#define WSS_MODE_RECORD 0x0002
#define WSS_MODE_TIMER 0x0004
#define WSS_MODE_OPEN (WSS_MODE_PLAY|WSS_MODE_RECORD|WSS_MODE_TIMER)
/* defines for codec.hardware */
#define WSS_HW_DETECT 0x0000 /* let CS4231 driver detect chip */
#define WSS_HW_DETECT3 0x0001 /* allow mode 3 */
#define WSS_HW_TYPE_MASK 0xff00 /* type mask */
#define WSS_HW_CS4231_MASK 0x0100 /* CS4231 serie */
#define WSS_HW_CS4231 0x0100 /* CS4231 chip */
#define WSS_HW_CS4231A 0x0101 /* CS4231A chip */
#define WSS_HW_AD1845 0x0102 /* AD1845 chip */
#define WSS_HW_CS4232_MASK 0x0200 /* CS4232 serie (has control ports) */
#define WSS_HW_CS4232 0x0200 /* CS4232 */
#define WSS_HW_CS4232A 0x0201 /* CS4232A */
#define WSS_HW_CS4236 0x0202 /* CS4236 */
#define WSS_HW_CS4236B_MASK 0x0400 /* CS4236B serie (has extended control regs) */
#define WSS_HW_CS4235 0x0400 /* CS4235 - Crystal Clear (tm) stereo enhancement */
#define WSS_HW_CS4236B 0x0401 /* CS4236B */
#define WSS_HW_CS4237B 0x0402 /* CS4237B - SRS 3D */
#define WSS_HW_CS4238B 0x0403 /* CS4238B - QSOUND 3D */
#define WSS_HW_CS4239 0x0404 /* CS4239 - Crystal Clear (tm) stereo enhancement */
#define WSS_HW_AD1848_MASK 0x0800 /* AD1848 serie (half duplex) */
#define WSS_HW_AD1847 0x0801 /* AD1847 chip */
#define WSS_HW_AD1848 0x0802 /* AD1848 chip */
#define WSS_HW_CS4248 0x0803 /* CS4248 chip */
#define WSS_HW_CMI8330 0x0804 /* CMI8330 chip */
#define WSS_HW_THINKPAD 0x0805 /* Thinkpad 360/750/755 */
/* compatible, but clones */
#define WSS_HW_INTERWAVE 0x1000 /* InterWave chip */
#define WSS_HW_OPL3SA2 0x1101 /* OPL3-SA2 chip, similar to cs4231 */
#define WSS_HW_OPTI93X 0x1102 /* Opti 930/931/933 */
/* defines for codec.hwshare */
#define WSS_HWSHARE_IRQ (1<<0)
#define WSS_HWSHARE_DMA1 (1<<1)
#define WSS_HWSHARE_DMA2 (1<<2)
/* IBM Thinkpad specific stuff */
#define AD1848_THINKPAD_CTL_PORT1 0x15e8
#define AD1848_THINKPAD_CTL_PORT2 0x15e9
#define AD1848_THINKPAD_CS4248_ENABLE_BIT 0x02
struct snd_wss {
unsigned long port; /* base i/o port */
struct resource *res_port;
unsigned long cport; /* control base i/o port (CS4236) */
struct resource *res_cport;
int irq; /* IRQ line */
int dma1; /* playback DMA */
int dma2; /* record DMA */
unsigned short version; /* version of CODEC chip */
unsigned short mode; /* see to WSS_MODE_XXXX */
unsigned short hardware; /* see to WSS_HW_XXXX */
unsigned short hwshare; /* shared resources */
unsigned short single_dma:1, /* forced single DMA mode (GUS 16-bit */
/* daughter board) or dma1 == dma2 */
ebus_flag:1, /* SPARC: EBUS present */
thinkpad_flag:1; /* Thinkpad CS4248 needs extra help */
struct snd_card *card;
struct snd_pcm *pcm;
struct snd_pcm_substream *playback_substream;
struct snd_pcm_substream *capture_substream;
struct snd_timer *timer;
unsigned char image[32]; /* registers image */
unsigned char eimage[32]; /* extended registers image */
unsigned char cimage[16]; /* control registers image */
int mce_bit;
int calibrate_mute;
int sw_3d_bit;
unsigned int p_dma_size;
unsigned int c_dma_size;
spinlock_t reg_lock;
struct mutex mce_mutex;
struct mutex open_mutex;
int (*rate_constraint) (struct snd_pcm_runtime *runtime);
void (*set_playback_format) (struct snd_wss *chip,
struct snd_pcm_hw_params *hw_params,
unsigned char pdfr);
void (*set_capture_format) (struct snd_wss *chip,
struct snd_pcm_hw_params *hw_params,
unsigned char cdfr);
void (*trigger) (struct snd_wss *chip, unsigned int what, int start);
#ifdef CONFIG_PM
void (*suspend) (struct snd_wss *chip);
void (*resume) (struct snd_wss *chip);
#endif
void *dma_private_data;
int (*claim_dma) (struct snd_wss *chip,
void *dma_private_data, int dma);
int (*release_dma) (struct snd_wss *chip,
void *dma_private_data, int dma);
};
/* exported functions */
void snd_wss_out(struct snd_wss *chip, unsigned char reg, unsigned char val);
unsigned char snd_wss_in(struct snd_wss *chip, unsigned char reg);
void snd_cs4236_ext_out(struct snd_wss *chip,
unsigned char reg, unsigned char val);
unsigned char snd_cs4236_ext_in(struct snd_wss *chip, unsigned char reg);
void snd_wss_mce_up(struct snd_wss *chip);
void snd_wss_mce_down(struct snd_wss *chip);
void snd_wss_overrange(struct snd_wss *chip);
irqreturn_t snd_wss_interrupt(int irq, void *dev_id);
const char *snd_wss_chip_id(struct snd_wss *chip);
int snd_wss_create(struct snd_card *card,
unsigned long port,
unsigned long cport,
int irq, int dma1, int dma2,
unsigned short hardware,
unsigned short hwshare,
struct snd_wss **rchip);
int snd_wss_pcm(struct snd_wss *chip, int device);
int snd_wss_timer(struct snd_wss *chip, int device);
int snd_wss_mixer(struct snd_wss *chip);
const struct snd_pcm_ops *snd_wss_get_pcm_ops(int direction);
int snd_cs4236_create(struct snd_card *card,
unsigned long port,
unsigned long cport,
int irq, int dma1, int dma2,
unsigned short hardware,
unsigned short hwshare,
struct snd_wss **rchip);
int snd_cs4236_pcm(struct snd_wss *chip, int device);
int snd_cs4236_mixer(struct snd_wss *chip);
/*
* mixer library
*/
#define WSS_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.name = xname, \
.index = xindex, \
.info = snd_wss_info_single, \
.get = snd_wss_get_single, \
.put = snd_wss_put_single, \
.private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
int snd_wss_info_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
int snd_wss_get_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_wss_put_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
#define WSS_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.name = xname, \
.index = xindex, \
.info = snd_wss_info_double, \
.get = snd_wss_get_double, \
.put = snd_wss_put_double, \
.private_value = left_reg | (right_reg << 8) | (shift_left << 16) | \
(shift_right << 19) | (mask << 24) | (invert << 22) }
#define WSS_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
.name = xname, \
.index = xindex, \
.info = snd_wss_info_single, \
.get = snd_wss_get_single, \
.put = snd_wss_put_single, \
.private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
.tlv = { .p = (xtlv) } }
#define WSS_DOUBLE_TLV(xname, xindex, left_reg, right_reg, \
shift_left, shift_right, mask, invert, xtlv) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
.name = xname, \
.index = xindex, \
.info = snd_wss_info_double, \
.get = snd_wss_get_double, \
.put = snd_wss_put_double, \
.private_value = left_reg | (right_reg << 8) | (shift_left << 16) | \
(shift_right << 19) | (mask << 24) | (invert << 22), \
.tlv = { .p = (xtlv) } }
int snd_wss_info_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
int snd_wss_get_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_wss_put_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
#endif /* __SOUND_WSS_H */
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