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linux-zen-server/sound/sparc/cs4231.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for CS4231 sound chips found on Sparcs.
* Copyright (C) 2002, 2008 David S. Miller <davem@davemloft.net>
*
* Based entirely upon drivers/sbus/audio/cs4231.c which is:
* Copyright (C) 1996, 1997, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
* and also sound/isa/cs423x/cs4231_lib.c which is:
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/info.h>
#include <sound/control.h>
#include <sound/timer.h>
#include <sound/initval.h>
#include <sound/pcm_params.h>
#ifdef CONFIG_SBUS
#define SBUS_SUPPORT
#endif
#if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
#define EBUS_SUPPORT
#include <linux/pci.h>
#include <asm/ebus_dma.h>
#endif
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
/* Enable this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
MODULE_DESCRIPTION("Sun CS4231");
MODULE_LICENSE("GPL");
#ifdef SBUS_SUPPORT
struct sbus_dma_info {
spinlock_t lock; /* DMA access lock */
int dir;
void __iomem *regs;
};
#endif
struct snd_cs4231;
struct cs4231_dma_control {
void (*prepare)(struct cs4231_dma_control *dma_cont,
int dir);
void (*enable)(struct cs4231_dma_control *dma_cont, int on);
int (*request)(struct cs4231_dma_control *dma_cont,
dma_addr_t bus_addr, size_t len);
unsigned int (*address)(struct cs4231_dma_control *dma_cont);
#ifdef EBUS_SUPPORT
struct ebus_dma_info ebus_info;
#endif
#ifdef SBUS_SUPPORT
struct sbus_dma_info sbus_info;
#endif
};
struct snd_cs4231 {
spinlock_t lock; /* registers access lock */
void __iomem *port;
struct cs4231_dma_control p_dma;
struct cs4231_dma_control c_dma;
u32 flags;
#define CS4231_FLAG_EBUS 0x00000001
#define CS4231_FLAG_PLAYBACK 0x00000002
#define CS4231_FLAG_CAPTURE 0x00000004
struct snd_card *card;
struct snd_pcm *pcm;
struct snd_pcm_substream *playback_substream;
unsigned int p_periods_sent;
struct snd_pcm_substream *capture_substream;
unsigned int c_periods_sent;
struct snd_timer *timer;
unsigned short mode;
#define CS4231_MODE_NONE 0x0000
#define CS4231_MODE_PLAY 0x0001
#define CS4231_MODE_RECORD 0x0002
#define CS4231_MODE_TIMER 0x0004
#define CS4231_MODE_OPEN (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
CS4231_MODE_TIMER)
unsigned char image[32]; /* registers image */
int mce_bit;
int calibrate_mute;
struct mutex mce_mutex; /* mutex for mce register */
struct mutex open_mutex; /* mutex for ALSA open/close */
struct platform_device *op;
unsigned int irq[2];
unsigned int regs_size;
struct snd_cs4231 *next;
};
/* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
* now.... -DaveM
*/
/* IO ports */
#include <sound/cs4231-regs.h>
/* XXX offsets are different than PC ISA chips... */
#define CS4231U(chip, x) ((chip)->port + ((c_d_c_CS4231##x) << 2))
/* SBUS DMA register defines. */
#define APCCSR 0x10UL /* APC DMA CSR */
#define APCCVA 0x20UL /* APC Capture DMA Address */
#define APCCC 0x24UL /* APC Capture Count */
#define APCCNVA 0x28UL /* APC Capture DMA Next Address */
#define APCCNC 0x2cUL /* APC Capture Next Count */
#define APCPVA 0x30UL /* APC Play DMA Address */
#define APCPC 0x34UL /* APC Play Count */
#define APCPNVA 0x38UL /* APC Play DMA Next Address */
#define APCPNC 0x3cUL /* APC Play Next Count */
/* Defines for SBUS DMA-routines */
#define APCVA 0x0UL /* APC DMA Address */
#define APCC 0x4UL /* APC Count */
#define APCNVA 0x8UL /* APC DMA Next Address */
#define APCNC 0xcUL /* APC Next Count */
#define APC_PLAY 0x30UL /* Play registers start at 0x30 */
#define APC_RECORD 0x20UL /* Record registers start at 0x20 */
/* APCCSR bits */
#define APC_INT_PENDING 0x800000 /* Interrupt Pending */
#define APC_PLAY_INT 0x400000 /* Playback interrupt */
#define APC_CAPT_INT 0x200000 /* Capture interrupt */
#define APC_GENL_INT 0x100000 /* General interrupt */
#define APC_XINT_ENA 0x80000 /* General ext int. enable */
#define APC_XINT_PLAY 0x40000 /* Playback ext intr */
#define APC_XINT_CAPT 0x20000 /* Capture ext intr */
#define APC_XINT_GENL 0x10000 /* Error ext intr */
#define APC_XINT_EMPT 0x8000 /* Pipe empty interrupt (0 write to pva) */
#define APC_XINT_PEMP 0x4000 /* Play pipe empty (pva and pnva not set) */
#define APC_XINT_PNVA 0x2000 /* Playback NVA dirty */
#define APC_XINT_PENA 0x1000 /* play pipe empty Int enable */
#define APC_XINT_COVF 0x800 /* Cap data dropped on floor */
#define APC_XINT_CNVA 0x400 /* Capture NVA dirty */
#define APC_XINT_CEMP 0x200 /* Capture pipe empty (cva and cnva not set) */
#define APC_XINT_CENA 0x100 /* Cap. pipe empty int enable */
#define APC_PPAUSE 0x80 /* Pause the play DMA */
#define APC_CPAUSE 0x40 /* Pause the capture DMA */
#define APC_CDC_RESET 0x20 /* CODEC RESET */
#define APC_PDMA_READY 0x08 /* Play DMA Go */
#define APC_CDMA_READY 0x04 /* Capture DMA Go */
#define APC_CHIP_RESET 0x01 /* Reset the chip */
/* EBUS DMA register offsets */
#define EBDMA_CSR 0x00UL /* Control/Status */
#define EBDMA_ADDR 0x04UL /* DMA Address */
#define EBDMA_COUNT 0x08UL /* DMA Count */
/*
* Some variables
*/
static const unsigned char freq_bits[14] = {
/* 5510 */ 0x00 | CS4231_XTAL2,
/* 6620 */ 0x0E | CS4231_XTAL2,
/* 8000 */ 0x00 | CS4231_XTAL1,
/* 9600 */ 0x0E | CS4231_XTAL1,
/* 11025 */ 0x02 | CS4231_XTAL2,
/* 16000 */ 0x02 | CS4231_XTAL1,
/* 18900 */ 0x04 | CS4231_XTAL2,
/* 22050 */ 0x06 | CS4231_XTAL2,
/* 27042 */ 0x04 | CS4231_XTAL1,
/* 32000 */ 0x06 | CS4231_XTAL1,
/* 33075 */ 0x0C | CS4231_XTAL2,
/* 37800 */ 0x08 | CS4231_XTAL2,
/* 44100 */ 0x0A | CS4231_XTAL2,
/* 48000 */ 0x0C | CS4231_XTAL1
};
static const unsigned int rates[14] = {
5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
27042, 32000, 33075, 37800, 44100, 48000
};
static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = ARRAY_SIZE(rates),
.list = rates,
};
static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
{
return snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_rates);
}
static const unsigned char snd_cs4231_original_image[32] =
{
0x00, /* 00/00 - lic */
0x00, /* 01/01 - ric */
0x9f, /* 02/02 - la1ic */
0x9f, /* 03/03 - ra1ic */
0x9f, /* 04/04 - la2ic */
0x9f, /* 05/05 - ra2ic */
0xbf, /* 06/06 - loc */
0xbf, /* 07/07 - roc */
0x20, /* 08/08 - pdfr */
CS4231_AUTOCALIB, /* 09/09 - ic */
0x00, /* 0a/10 - pc */
0x00, /* 0b/11 - ti */
CS4231_MODE2, /* 0c/12 - mi */
0x00, /* 0d/13 - lbc */
0x00, /* 0e/14 - pbru */
0x00, /* 0f/15 - pbrl */
0x80, /* 10/16 - afei */
0x01, /* 11/17 - afeii */
0x9f, /* 12/18 - llic */
0x9f, /* 13/19 - rlic */
0x00, /* 14/20 - tlb */
0x00, /* 15/21 - thb */
0x00, /* 16/22 - la3mic/reserved */
0x00, /* 17/23 - ra3mic/reserved */
0x00, /* 18/24 - afs */
0x00, /* 19/25 - lamoc/version */
0x00, /* 1a/26 - mioc */
0x00, /* 1b/27 - ramoc/reserved */
0x20, /* 1c/28 - cdfr */
0x00, /* 1d/29 - res4 */
0x00, /* 1e/30 - cbru */
0x00, /* 1f/31 - cbrl */
};
static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
{
if (cp->flags & CS4231_FLAG_EBUS)
return readb(reg_addr);
else
return sbus_readb(reg_addr);
}
static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
void __iomem *reg_addr)
{
if (cp->flags & CS4231_FLAG_EBUS)
return writeb(val, reg_addr);
else
return sbus_writeb(val, reg_addr);
}
/*
* Basic I/O functions
*/
static void snd_cs4231_ready(struct snd_cs4231 *chip)
{
int timeout;
for (timeout = 250; timeout > 0; timeout--) {
int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
if ((val & CS4231_INIT) == 0)
break;
udelay(100);
}
}
static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
unsigned char value)
{
snd_cs4231_ready(chip);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
snd_printdd("out: auto calibration time out - reg = 0x%x, "
"value = 0x%x\n",
reg, value);
#endif
__cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
wmb();
__cs4231_writeb(chip, value, CS4231U(chip, REG));
mb();
}
static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
unsigned char mask, unsigned char value)
{
unsigned char tmp = (chip->image[reg] & mask) | value;
chip->image[reg] = tmp;
if (!chip->calibrate_mute)
snd_cs4231_dout(chip, reg, tmp);
}
static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
unsigned char value)
{
snd_cs4231_dout(chip, reg, value);
chip->image[reg] = value;
mb();
}
static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
{
snd_cs4231_ready(chip);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
snd_printdd("in: auto calibration time out - reg = 0x%x\n",
reg);
#endif
__cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
mb();
return __cs4231_readb(chip, CS4231U(chip, REG));
}
/*
* CS4231 detection / MCE routines
*/
static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
{
int timeout;
/* looks like this sequence is proper for CS4231A chip (GUS MAX) */
for (timeout = 5; timeout > 0; timeout--)
__cs4231_readb(chip, CS4231U(chip, REGSEL));
/* end of cleanup sequence */
for (timeout = 500; timeout > 0; timeout--) {
int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
if ((val & CS4231_INIT) == 0)
break;
msleep(1);
}
}
static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
{
unsigned long flags;
int timeout;
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_ready(chip);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
snd_printdd("mce_up - auto calibration time out (0)\n");
#endif
chip->mce_bit |= CS4231_MCE;
timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
if (timeout == 0x80)
snd_printdd("mce_up [%p]: serious init problem - "
"codec still busy\n",
chip->port);
if (!(timeout & CS4231_MCE))
__cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
CS4231U(chip, REGSEL));
spin_unlock_irqrestore(&chip->lock, flags);
}
static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
{
unsigned long flags, timeout;
int reg;
snd_cs4231_busy_wait(chip);
spin_lock_irqsave(&chip->lock, flags);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
CS4231U(chip, REGSEL));
#endif
chip->mce_bit &= ~CS4231_MCE;
reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
__cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
CS4231U(chip, REGSEL));
if (reg == 0x80)
snd_printdd("mce_down [%p]: serious init problem "
"- codec still busy\n", chip->port);
if ((reg & CS4231_MCE) == 0) {
spin_unlock_irqrestore(&chip->lock, flags);
return;
}
/*
* Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
*/
timeout = jiffies + msecs_to_jiffies(250);
do {
spin_unlock_irqrestore(&chip->lock, flags);
msleep(1);
spin_lock_irqsave(&chip->lock, flags);
reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
reg &= CS4231_CALIB_IN_PROGRESS;
} while (reg && time_before(jiffies, timeout));
spin_unlock_irqrestore(&chip->lock, flags);
if (reg)
snd_printk(KERN_ERR
"mce_down - auto calibration time out (2)\n");
}
static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
struct snd_pcm_substream *substream,
unsigned int *periods_sent)
{
struct snd_pcm_runtime *runtime = substream->runtime;
while (1) {
unsigned int period_size = snd_pcm_lib_period_bytes(substream);
unsigned int offset = period_size * (*periods_sent);
if (WARN_ON(period_size >= (1 << 24)))
return;
if (dma_cont->request(dma_cont,
runtime->dma_addr + offset, period_size))
return;
(*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
}
}
static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
unsigned int what, int on)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct cs4231_dma_control *dma_cont;
if (what & CS4231_PLAYBACK_ENABLE) {
dma_cont = &chip->p_dma;
if (on) {
dma_cont->prepare(dma_cont, 0);
dma_cont->enable(dma_cont, 1);
snd_cs4231_advance_dma(dma_cont,
chip->playback_substream,
&chip->p_periods_sent);
} else {
dma_cont->enable(dma_cont, 0);
}
}
if (what & CS4231_RECORD_ENABLE) {
dma_cont = &chip->c_dma;
if (on) {
dma_cont->prepare(dma_cont, 1);
dma_cont->enable(dma_cont, 1);
snd_cs4231_advance_dma(dma_cont,
chip->capture_substream,
&chip->c_periods_sent);
} else {
dma_cont->enable(dma_cont, 0);
}
}
}
static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
int result = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_STOP:
{
unsigned int what = 0;
struct snd_pcm_substream *s;
unsigned long flags;
snd_pcm_group_for_each_entry(s, substream) {
if (s == chip->playback_substream) {
what |= CS4231_PLAYBACK_ENABLE;
snd_pcm_trigger_done(s, substream);
} else if (s == chip->capture_substream) {
what |= CS4231_RECORD_ENABLE;
snd_pcm_trigger_done(s, substream);
}
}
spin_lock_irqsave(&chip->lock, flags);
if (cmd == SNDRV_PCM_TRIGGER_START) {
cs4231_dma_trigger(substream, what, 1);
chip->image[CS4231_IFACE_CTRL] |= what;
} else {
cs4231_dma_trigger(substream, what, 0);
chip->image[CS4231_IFACE_CTRL] &= ~what;
}
snd_cs4231_out(chip, CS4231_IFACE_CTRL,
chip->image[CS4231_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->lock, flags);
break;
}
default:
result = -EINVAL;
break;
}
return result;
}
/*
* CODEC I/O
*/
static unsigned char snd_cs4231_get_rate(unsigned int rate)
{
int i;
for (i = 0; i < 14; i++)
if (rate == rates[i])
return freq_bits[i];
return freq_bits[13];
}
static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
int channels)
{
unsigned char rformat;
rformat = CS4231_LINEAR_8;
switch (format) {
case SNDRV_PCM_FORMAT_MU_LAW:
rformat = CS4231_ULAW_8;
break;
case SNDRV_PCM_FORMAT_A_LAW:
rformat = CS4231_ALAW_8;
break;
case SNDRV_PCM_FORMAT_S16_LE:
rformat = CS4231_LINEAR_16;
break;
case SNDRV_PCM_FORMAT_S16_BE:
rformat = CS4231_LINEAR_16_BIG;
break;
case SNDRV_PCM_FORMAT_IMA_ADPCM:
rformat = CS4231_ADPCM_16;
break;
}
if (channels > 1)
rformat |= CS4231_STEREO;
return rformat;
}
static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
{
unsigned long flags;
mute = mute ? 1 : 0;
spin_lock_irqsave(&chip->lock, flags);
if (chip->calibrate_mute == mute) {
spin_unlock_irqrestore(&chip->lock, flags);
return;
}
if (!mute) {
snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
chip->image[CS4231_LEFT_INPUT]);
snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
chip->image[CS4231_RIGHT_INPUT]);
snd_cs4231_dout(chip, CS4231_LOOPBACK,
chip->image[CS4231_LOOPBACK]);
}
snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
snd_cs4231_dout(chip, CS4231_MONO_CTRL,
mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
chip->calibrate_mute = mute;
spin_unlock_irqrestore(&chip->lock, flags);
}
static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
struct snd_pcm_hw_params *params,
unsigned char pdfr)
{
unsigned long flags;
mutex_lock(&chip->mce_mutex);
snd_cs4231_calibrate_mute(chip, 1);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
(pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
pdfr);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
snd_cs4231_calibrate_mute(chip, 0);
mutex_unlock(&chip->mce_mutex);
}
static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
struct snd_pcm_hw_params *params,
unsigned char cdfr)
{
unsigned long flags;
mutex_lock(&chip->mce_mutex);
snd_cs4231_calibrate_mute(chip, 1);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
(cdfr & 0x0f));
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
}
snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
snd_cs4231_calibrate_mute(chip, 0);
mutex_unlock(&chip->mce_mutex);
}
/*
* Timer interface
*/
static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
{
struct snd_cs4231 *chip = snd_timer_chip(timer);
return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
}
static int snd_cs4231_timer_start(struct snd_timer *timer)
{
unsigned long flags;
unsigned int ticks;
struct snd_cs4231 *chip = snd_timer_chip(timer);
spin_lock_irqsave(&chip->lock, flags);
ticks = timer->sticks;
if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
(unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
(unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
snd_cs4231_out(chip, CS4231_TIMER_HIGH,
chip->image[CS4231_TIMER_HIGH] =
(unsigned char) (ticks >> 8));
snd_cs4231_out(chip, CS4231_TIMER_LOW,
chip->image[CS4231_TIMER_LOW] =
(unsigned char) ticks);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1] |
CS4231_TIMER_ENABLE);
}
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_cs4231_timer_stop(struct snd_timer *timer)
{
unsigned long flags;
struct snd_cs4231 *chip = snd_timer_chip(timer);
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1]);
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static void snd_cs4231_init(struct snd_cs4231 *chip)
{
unsigned long flags;
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (1)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
CS4231_PLAYBACK_PIO |
CS4231_RECORD_ENABLE |
CS4231_RECORD_PIO |
CS4231_CALIB_MODE);
chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (2)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (3) - afei = 0x%x\n",
chip->image[CS4231_ALT_FEATURE_1]);
#endif
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
chip->image[CS4231_ALT_FEATURE_2]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
chip->image[CS4231_PLAYBK_FORMAT]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (4)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (5)\n");
#endif
}
static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if ((chip->mode & mode)) {
mutex_unlock(&chip->open_mutex);
return -EAGAIN;
}
if (chip->mode & CS4231_MODE_OPEN) {
chip->mode |= mode;
mutex_unlock(&chip->open_mutex);
return 0;
}
/* ok. now enable and ack CODEC IRQ */
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
CS4231_RECORD_IRQ |
CS4231_TIMER_IRQ);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
__cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
__cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
CS4231_RECORD_IRQ |
CS4231_TIMER_IRQ);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
spin_unlock_irqrestore(&chip->lock, flags);
chip->mode = mode;
mutex_unlock(&chip->open_mutex);
return 0;
}
static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
chip->mode &= ~mode;
if (chip->mode & CS4231_MODE_OPEN) {
mutex_unlock(&chip->open_mutex);
return;
}
snd_cs4231_calibrate_mute(chip, 1);
/* disable IRQ */
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
__cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
__cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
/* now disable record & playback */
if (chip->image[CS4231_IFACE_CTRL] &
(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &=
~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
snd_cs4231_out(chip, CS4231_IFACE_CTRL,
chip->image[CS4231_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
spin_lock_irqsave(&chip->lock, flags);
}
/* clear IRQ again */
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
__cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
__cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_calibrate_mute(chip, 0);
chip->mode = 0;
mutex_unlock(&chip->open_mutex);
}
/*
* timer open/close
*/
static int snd_cs4231_timer_open(struct snd_timer *timer)
{
struct snd_cs4231 *chip = snd_timer_chip(timer);
snd_cs4231_open(chip, CS4231_MODE_TIMER);
return 0;
}
static int snd_cs4231_timer_close(struct snd_timer *timer)
{
struct snd_cs4231 *chip = snd_timer_chip(timer);
snd_cs4231_close(chip, CS4231_MODE_TIMER);
return 0;
}
static const struct snd_timer_hardware snd_cs4231_timer_table = {
.flags = SNDRV_TIMER_HW_AUTO,
.resolution = 9945,
.ticks = 65535,
.open = snd_cs4231_timer_open,
.close = snd_cs4231_timer_close,
.c_resolution = snd_cs4231_timer_resolution,
.start = snd_cs4231_timer_start,
.stop = snd_cs4231_timer_stop,
};
/*
* ok.. exported functions..
*/
static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
unsigned char new_pdfr;
new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
params_channels(hw_params)) |
snd_cs4231_get_rate(params_rate(hw_params));
snd_cs4231_playback_format(chip, hw_params, new_pdfr);
return 0;
}
static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
CS4231_PLAYBACK_PIO);
if (WARN_ON(runtime->period_size > 0xffff + 1)) {
ret = -EINVAL;
goto out;
}
chip->p_periods_sent = 0;
out:
spin_unlock_irqrestore(&chip->lock, flags);
return ret;
}
static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
unsigned char new_cdfr;
new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
params_channels(hw_params)) |
snd_cs4231_get_rate(params_rate(hw_params));
snd_cs4231_capture_format(chip, hw_params, new_cdfr);
return 0;
}
static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
CS4231_RECORD_PIO);
chip->c_periods_sent = 0;
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static void snd_cs4231_overrange(struct snd_cs4231 *chip)
{
unsigned long flags;
unsigned char res;
spin_lock_irqsave(&chip->lock, flags);
res = snd_cs4231_in(chip, CS4231_TEST_INIT);
spin_unlock_irqrestore(&chip->lock, flags);
/* detect overrange only above 0dB; may be user selectable? */
if (res & (0x08 | 0x02))
chip->capture_substream->runtime->overrange++;
}
static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
{
if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
snd_pcm_period_elapsed(chip->playback_substream);
snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
&chip->p_periods_sent);
}
}
static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
{
if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
snd_pcm_period_elapsed(chip->capture_substream);
snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
&chip->c_periods_sent);
}
}
static snd_pcm_uframes_t snd_cs4231_playback_pointer(
struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct cs4231_dma_control *dma_cont = &chip->p_dma;
size_t ptr;
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
return 0;
ptr = dma_cont->address(dma_cont);
if (ptr != 0)
ptr -= substream->runtime->dma_addr;
return bytes_to_frames(substream->runtime, ptr);
}
static snd_pcm_uframes_t snd_cs4231_capture_pointer(
struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct cs4231_dma_control *dma_cont = &chip->c_dma;
size_t ptr;
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
return 0;
ptr = dma_cont->address(dma_cont);
if (ptr != 0)
ptr -= substream->runtime->dma_addr;
return bytes_to_frames(substream->runtime, ptr);
}
static int snd_cs4231_probe(struct snd_cs4231 *chip)
{
unsigned long flags;
int i;
int id = 0;
int vers = 0;
unsigned char *ptr;
for (i = 0; i < 50; i++) {
mb();
if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
msleep(2);
else {
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
vers = snd_cs4231_in(chip, CS4231_VERSION);
spin_unlock_irqrestore(&chip->lock, flags);
if (id == 0x0a)
break; /* this is valid value */
}
}
snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
if (id != 0x0a)
return -ENODEV; /* no valid device found */
spin_lock_irqsave(&chip->lock, flags);
/* clear any pendings IRQ */
__cs4231_readb(chip, CS4231U(chip, STATUS));
__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
mb();
spin_unlock_irqrestore(&chip->lock, flags);
chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
chip->image[CS4231_IFACE_CTRL] =
chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
chip->image[CS4231_ALT_FEATURE_1] = 0x80;
chip->image[CS4231_ALT_FEATURE_2] = 0x01;
if (vers & 0x20)
chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
ptr = (unsigned char *) &chip->image;
snd_cs4231_mce_down(chip);
spin_lock_irqsave(&chip->lock, flags);
for (i = 0; i < 32; i++) /* ok.. fill all CS4231 registers */
snd_cs4231_out(chip, i, *ptr++);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_up(chip);
snd_cs4231_mce_down(chip);
mdelay(2);
return 0; /* all things are ok.. */
}
static const struct snd_pcm_hardware snd_cs4231_playback = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_SYNC_START,
.formats = SNDRV_PCM_FMTBIT_MU_LAW |
SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_IMA_ADPCM |
SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S16_BE,
.rates = SNDRV_PCM_RATE_KNOT |
SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = 32 * 1024,
.period_bytes_min = 64,
.period_bytes_max = 32 * 1024,
.periods_min = 1,
.periods_max = 1024,
};
static const struct snd_pcm_hardware snd_cs4231_capture = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_SYNC_START,
.formats = SNDRV_PCM_FMTBIT_MU_LAW |
SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_IMA_ADPCM |
SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S16_BE,
.rates = SNDRV_PCM_RATE_KNOT |
SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = 32 * 1024,
.period_bytes_min = 64,
.period_bytes_max = 32 * 1024,
.periods_min = 1,
.periods_max = 1024,
};
static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
runtime->hw = snd_cs4231_playback;
err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
if (err < 0)
return err;
chip->playback_substream = substream;
chip->p_periods_sent = 0;
snd_pcm_set_sync(substream);
snd_cs4231_xrate(runtime);
return 0;
}
static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
runtime->hw = snd_cs4231_capture;
err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
if (err < 0)
return err;
chip->capture_substream = substream;
chip->c_periods_sent = 0;
snd_pcm_set_sync(substream);
snd_cs4231_xrate(runtime);
return 0;
}
static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
snd_cs4231_close(chip, CS4231_MODE_PLAY);
chip->playback_substream = NULL;
return 0;
}
static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
snd_cs4231_close(chip, CS4231_MODE_RECORD);
chip->capture_substream = NULL;
return 0;
}
/* XXX We can do some power-management, in particular on EBUS using
* XXX the audio AUXIO register...
*/
static const struct snd_pcm_ops snd_cs4231_playback_ops = {
.open = snd_cs4231_playback_open,
.close = snd_cs4231_playback_close,
.hw_params = snd_cs4231_playback_hw_params,
.prepare = snd_cs4231_playback_prepare,
.trigger = snd_cs4231_trigger,
.pointer = snd_cs4231_playback_pointer,
};
static const struct snd_pcm_ops snd_cs4231_capture_ops = {
.open = snd_cs4231_capture_open,
.close = snd_cs4231_capture_close,
.hw_params = snd_cs4231_capture_hw_params,
.prepare = snd_cs4231_capture_prepare,
.trigger = snd_cs4231_trigger,
.pointer = snd_cs4231_capture_pointer,
};
static int snd_cs4231_pcm(struct snd_card *card)
{
struct snd_cs4231 *chip = card->private_data;
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
if (err < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_cs4231_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_cs4231_capture_ops);
/* global setup */
pcm->private_data = chip;
pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
strcpy(pcm->name, "CS4231");
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
&chip->op->dev, 64 * 1024, 128 * 1024);
chip->pcm = pcm;
return 0;
}
static int snd_cs4231_timer(struct snd_card *card)
{
struct snd_cs4231 *chip = card->private_data;
struct snd_timer *timer;
struct snd_timer_id tid;
int err;
/* Timer initialization */
tid.dev_class = SNDRV_TIMER_CLASS_CARD;
tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
tid.card = card->number;
tid.device = 0;
tid.subdevice = 0;
err = snd_timer_new(card, "CS4231", &tid, &timer);
if (err < 0)
return err;
strcpy(timer->name, "CS4231");
timer->private_data = chip;
timer->hw = snd_cs4231_timer_table;
chip->timer = timer;
return 0;
}
/*
* MIXER part
*/
static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char * const texts[4] = {
"Line", "CD", "Mic", "Mix"
};
return snd_ctl_enum_info(uinfo, 2, 4, texts);
}
static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
spin_lock_irqsave(&chip->lock, flags);
ucontrol->value.enumerated.item[0] =
(chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
ucontrol->value.enumerated.item[1] =
(chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
unsigned short left, right;
int change;
if (ucontrol->value.enumerated.item[0] > 3 ||
ucontrol->value.enumerated.item[1] > 3)
return -EINVAL;
left = ucontrol->value.enumerated.item[0] << 6;
right = ucontrol->value.enumerated.item[1] << 6;
spin_lock_irqsave(&chip->lock, flags);
left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
change = left != chip->image[CS4231_LEFT_INPUT] ||
right != chip->image[CS4231_RIGHT_INPUT];
snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 16) & 0xff;
uinfo->type = (mask == 1) ?
SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
spin_lock_irqsave(&chip->lock, flags);
ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
spin_unlock_irqrestore(&chip->lock, flags);
if (invert)
ucontrol->value.integer.value[0] =
(mask - ucontrol->value.integer.value[0]);
return 0;
}
static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
int change;
unsigned short val;
val = (ucontrol->value.integer.value[0] & mask);
if (invert)
val = mask - val;
val <<= shift;
spin_lock_irqsave(&chip->lock, flags);
val = (chip->image[reg] & ~(mask << shift)) | val;
change = val != chip->image[reg];
snd_cs4231_out(chip, reg, val);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 24) & 0xff;
uinfo->type = mask == 1 ?
SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
spin_lock_irqsave(&chip->lock, flags);
ucontrol->value.integer.value[0] =
(chip->image[left_reg] >> shift_left) & mask;
ucontrol->value.integer.value[1] =
(chip->image[right_reg] >> shift_right) & mask;
spin_unlock_irqrestore(&chip->lock, flags);
if (invert) {
ucontrol->value.integer.value[0] =
(mask - ucontrol->value.integer.value[0]);
ucontrol->value.integer.value[1] =
(mask - ucontrol->value.integer.value[1]);
}
return 0;
}
static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
int change;
unsigned short val1, val2;
val1 = ucontrol->value.integer.value[0] & mask;
val2 = ucontrol->value.integer.value[1] & mask;
if (invert) {
val1 = mask - val1;
val2 = mask - val2;
}
val1 <<= shift_left;
val2 <<= shift_right;
spin_lock_irqsave(&chip->lock, flags);
val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
change = val1 != chip->image[left_reg];
change |= val2 != chip->image[right_reg];
snd_cs4231_out(chip, left_reg, val1);
snd_cs4231_out(chip, right_reg, val2);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
#define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
.info = snd_cs4231_info_single, \
.get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
.private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
#define CS4231_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_cs4231_info_double, \
.get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
.private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
static const struct snd_kcontrol_new snd_cs4231_controls[] = {
CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
15, 0),
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Capture Source",
.info = snd_cs4231_info_mux,
.get = snd_cs4231_get_mux,
.put = snd_cs4231_put_mux,
},
CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1, 0),
CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
/* SPARC specific uses of XCTL{0,1} general purpose outputs. */
CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
};
static int snd_cs4231_mixer(struct snd_card *card)
{
struct snd_cs4231 *chip = card->private_data;
int err, idx;
if (snd_BUG_ON(!chip || !chip->pcm))
return -EINVAL;
strcpy(card->mixername, chip->pcm->name);
for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
err = snd_ctl_add(card,
snd_ctl_new1(&snd_cs4231_controls[idx], chip));
if (err < 0)
return err;
}
return 0;
}
static int dev;
static int cs4231_attach_begin(struct platform_device *op,
struct snd_card **rcard)
{
struct snd_card *card;
struct snd_cs4231 *chip;
int err;
*rcard = NULL;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
err = snd_card_new(&op->dev, index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_cs4231), &card);
if (err < 0)
return err;
strcpy(card->driver, "CS4231");
strcpy(card->shortname, "Sun CS4231");
chip = card->private_data;
chip->card = card;
*rcard = card;
return 0;
}
static int cs4231_attach_finish(struct snd_card *card)
{
struct snd_cs4231 *chip = card->private_data;
int err;
err = snd_cs4231_pcm(card);
if (err < 0)
goto out_err;
err = snd_cs4231_mixer(card);
if (err < 0)
goto out_err;
err = snd_cs4231_timer(card);
if (err < 0)
goto out_err;
err = snd_card_register(card);
if (err < 0)
goto out_err;
dev_set_drvdata(&chip->op->dev, chip);
dev++;
return 0;
out_err:
snd_card_free(card);
return err;
}
#ifdef SBUS_SUPPORT
static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
{
unsigned long flags;
unsigned char status;
u32 csr;
struct snd_cs4231 *chip = dev_id;
/*This is IRQ is not raised by the cs4231*/
if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
return IRQ_NONE;
/* ACK the APC interrupt. */
csr = sbus_readl(chip->port + APCCSR);
sbus_writel(csr, chip->port + APCCSR);
if ((csr & APC_PDMA_READY) &&
(csr & APC_PLAY_INT) &&
(csr & APC_XINT_PNVA) &&
!(csr & APC_XINT_EMPT))
snd_cs4231_play_callback(chip);
if ((csr & APC_CDMA_READY) &&
(csr & APC_CAPT_INT) &&
(csr & APC_XINT_CNVA) &&
!(csr & APC_XINT_EMPT))
snd_cs4231_capture_callback(chip);
status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
if (status & CS4231_TIMER_IRQ) {
if (chip->timer)
snd_timer_interrupt(chip->timer, chip->timer->sticks);
}
if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
snd_cs4231_overrange(chip);
/* ACK the CS4231 interrupt. */
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
spin_unlock_irqrestore(&chip->lock, flags);
return IRQ_HANDLED;
}
/*
* SBUS DMA routines
*/
static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
dma_addr_t bus_addr, size_t len)
{
unsigned long flags;
u32 test, csr;
int err;
struct sbus_dma_info *base = &dma_cont->sbus_info;
if (len >= (1 << 24))
return -EINVAL;
spin_lock_irqsave(&base->lock, flags);
csr = sbus_readl(base->regs + APCCSR);
err = -EINVAL;
test = APC_CDMA_READY;
if (base->dir == APC_PLAY)
test = APC_PDMA_READY;
if (!(csr & test))
goto out;
err = -EBUSY;
test = APC_XINT_CNVA;
if (base->dir == APC_PLAY)
test = APC_XINT_PNVA;
if (!(csr & test))
goto out;
err = 0;
sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
sbus_writel(len, base->regs + base->dir + APCNC);
out:
spin_unlock_irqrestore(&base->lock, flags);
return err;
}
static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
{
unsigned long flags;
u32 csr, test;
struct sbus_dma_info *base = &dma_cont->sbus_info;
spin_lock_irqsave(&base->lock, flags);
csr = sbus_readl(base->regs + APCCSR);
test = APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
APC_XINT_PENA;
if (base->dir == APC_RECORD)
test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
csr |= test;
sbus_writel(csr, base->regs + APCCSR);
spin_unlock_irqrestore(&base->lock, flags);
}
static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
{
unsigned long flags;
u32 csr, shift;
struct sbus_dma_info *base = &dma_cont->sbus_info;
spin_lock_irqsave(&base->lock, flags);
if (!on) {
sbus_writel(0, base->regs + base->dir + APCNC);
sbus_writel(0, base->regs + base->dir + APCNVA);
if (base->dir == APC_PLAY) {
sbus_writel(0, base->regs + base->dir + APCC);
sbus_writel(0, base->regs + base->dir + APCVA);
}
udelay(1200);
}
csr = sbus_readl(base->regs + APCCSR);
shift = 0;
if (base->dir == APC_PLAY)
shift = 1;
if (on)
csr &= ~(APC_CPAUSE << shift);
else
csr |= (APC_CPAUSE << shift);
sbus_writel(csr, base->regs + APCCSR);
if (on)
csr |= (APC_CDMA_READY << shift);
else
csr &= ~(APC_CDMA_READY << shift);
sbus_writel(csr, base->regs + APCCSR);
spin_unlock_irqrestore(&base->lock, flags);
}
static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
{
struct sbus_dma_info *base = &dma_cont->sbus_info;
return sbus_readl(base->regs + base->dir + APCVA);
}
/*
* Init and exit routines
*/
static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
{
struct platform_device *op = chip->op;
if (chip->irq[0])
free_irq(chip->irq[0], chip);
if (chip->port)
of_iounmap(&op->resource[0], chip->port, chip->regs_size);
return 0;
}
static int snd_cs4231_sbus_dev_free(struct snd_device *device)
{
struct snd_cs4231 *cp = device->device_data;
return snd_cs4231_sbus_free(cp);
}
static const struct snd_device_ops snd_cs4231_sbus_dev_ops = {
.dev_free = snd_cs4231_sbus_dev_free,
};
static int snd_cs4231_sbus_create(struct snd_card *card,
struct platform_device *op,
int dev)
{
struct snd_cs4231 *chip = card->private_data;
int err;
spin_lock_init(&chip->lock);
spin_lock_init(&chip->c_dma.sbus_info.lock);
spin_lock_init(&chip->p_dma.sbus_info.lock);
mutex_init(&chip->mce_mutex);
mutex_init(&chip->open_mutex);
chip->op = op;
chip->regs_size = resource_size(&op->resource[0]);
memcpy(&chip->image, &snd_cs4231_original_image,
sizeof(snd_cs4231_original_image));
chip->port = of_ioremap(&op->resource[0], 0,
chip->regs_size, "cs4231");
if (!chip->port) {
snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
return -EIO;
}
chip->c_dma.sbus_info.regs = chip->port;
chip->p_dma.sbus_info.regs = chip->port;
chip->c_dma.sbus_info.dir = APC_RECORD;
chip->p_dma.sbus_info.dir = APC_PLAY;
chip->p_dma.prepare = sbus_dma_prepare;
chip->p_dma.enable = sbus_dma_enable;
chip->p_dma.request = sbus_dma_request;
chip->p_dma.address = sbus_dma_addr;
chip->c_dma.prepare = sbus_dma_prepare;
chip->c_dma.enable = sbus_dma_enable;
chip->c_dma.request = sbus_dma_request;
chip->c_dma.address = sbus_dma_addr;
if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
IRQF_SHARED, "cs4231", chip)) {
snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
dev, op->archdata.irqs[0]);
snd_cs4231_sbus_free(chip);
return -EBUSY;
}
chip->irq[0] = op->archdata.irqs[0];
if (snd_cs4231_probe(chip) < 0) {
snd_cs4231_sbus_free(chip);
return -ENODEV;
}
snd_cs4231_init(chip);
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
chip, &snd_cs4231_sbus_dev_ops);
if (err < 0) {
snd_cs4231_sbus_free(chip);
return err;
}
return 0;
}
static int cs4231_sbus_probe(struct platform_device *op)
{
struct resource *rp = &op->resource[0];
struct snd_card *card;
int err;
err = cs4231_attach_begin(op, &card);
if (err)
return err;
sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
card->shortname,
rp->flags & 0xffL,
(unsigned long long)rp->start,
op->archdata.irqs[0]);
err = snd_cs4231_sbus_create(card, op, dev);
if (err < 0) {
snd_card_free(card);
return err;
}
return cs4231_attach_finish(card);
}
#endif
#ifdef EBUS_SUPPORT
static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
void *cookie)
{
struct snd_cs4231 *chip = cookie;
snd_cs4231_play_callback(chip);
}
static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
int event, void *cookie)
{
struct snd_cs4231 *chip = cookie;
snd_cs4231_capture_callback(chip);
}
/*
* EBUS DMA wrappers
*/
static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
dma_addr_t bus_addr, size_t len)
{
return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
}
static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
{
ebus_dma_enable(&dma_cont->ebus_info, on);
}
static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
{
ebus_dma_prepare(&dma_cont->ebus_info, dir);
}
static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
{
return ebus_dma_addr(&dma_cont->ebus_info);
}
/*
* Init and exit routines
*/
static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
{
struct platform_device *op = chip->op;
if (chip->c_dma.ebus_info.regs) {
ebus_dma_unregister(&chip->c_dma.ebus_info);
of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
}
if (chip->p_dma.ebus_info.regs) {
ebus_dma_unregister(&chip->p_dma.ebus_info);
of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
}
if (chip->port)
of_iounmap(&op->resource[0], chip->port, 0x10);
return 0;
}
static int snd_cs4231_ebus_dev_free(struct snd_device *device)
{
struct snd_cs4231 *cp = device->device_data;
return snd_cs4231_ebus_free(cp);
}
static const struct snd_device_ops snd_cs4231_ebus_dev_ops = {
.dev_free = snd_cs4231_ebus_dev_free,
};
static int snd_cs4231_ebus_create(struct snd_card *card,
struct platform_device *op,
int dev)
{
struct snd_cs4231 *chip = card->private_data;
int err;
spin_lock_init(&chip->lock);
spin_lock_init(&chip->c_dma.ebus_info.lock);
spin_lock_init(&chip->p_dma.ebus_info.lock);
mutex_init(&chip->mce_mutex);
mutex_init(&chip->open_mutex);
chip->flags |= CS4231_FLAG_EBUS;
chip->op = op;
memcpy(&chip->image, &snd_cs4231_original_image,
sizeof(snd_cs4231_original_image));
strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
chip->c_dma.ebus_info.client_cookie = chip;
chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
chip->p_dma.ebus_info.client_cookie = chip;
chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
chip->p_dma.prepare = _ebus_dma_prepare;
chip->p_dma.enable = _ebus_dma_enable;
chip->p_dma.request = _ebus_dma_request;
chip->p_dma.address = _ebus_dma_addr;
chip->c_dma.prepare = _ebus_dma_prepare;
chip->c_dma.enable = _ebus_dma_enable;
chip->c_dma.request = _ebus_dma_request;
chip->c_dma.address = _ebus_dma_addr;
chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
chip->p_dma.ebus_info.regs =
of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
chip->c_dma.ebus_info.regs =
of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
if (!chip->port || !chip->p_dma.ebus_info.regs ||
!chip->c_dma.ebus_info.regs) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
return -EIO;
}
if (ebus_dma_register(&chip->c_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
dev);
return -EBUSY;
}
if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
dev);
return -EBUSY;
}
if (ebus_dma_register(&chip->p_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
dev);
return -EBUSY;
}
if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
return -EBUSY;
}
if (snd_cs4231_probe(chip) < 0) {
snd_cs4231_ebus_free(chip);
return -ENODEV;
}
snd_cs4231_init(chip);
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
chip, &snd_cs4231_ebus_dev_ops);
if (err < 0) {
snd_cs4231_ebus_free(chip);
return err;
}
return 0;
}
static int cs4231_ebus_probe(struct platform_device *op)
{
struct snd_card *card;
int err;
err = cs4231_attach_begin(op, &card);
if (err)
return err;
sprintf(card->longname, "%s at 0x%llx, irq %d",
card->shortname,
op->resource[0].start,
op->archdata.irqs[0]);
err = snd_cs4231_ebus_create(card, op, dev);
if (err < 0) {
snd_card_free(card);
return err;
}
return cs4231_attach_finish(card);
}
#endif
static int cs4231_probe(struct platform_device *op)
{
#ifdef EBUS_SUPPORT
if (of_node_name_eq(op->dev.of_node->parent, "ebus"))
return cs4231_ebus_probe(op);
#endif
#ifdef SBUS_SUPPORT
if (of_node_name_eq(op->dev.of_node->parent, "sbus") ||
of_node_name_eq(op->dev.of_node->parent, "sbi"))
return cs4231_sbus_probe(op);
#endif
return -ENODEV;
}
static int cs4231_remove(struct platform_device *op)
{
struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
snd_card_free(chip->card);
return 0;
}
static const struct of_device_id cs4231_match[] = {
{
.name = "SUNW,CS4231",
},
{
.name = "audio",
.compatible = "SUNW,CS4231",
},
{},
};
MODULE_DEVICE_TABLE(of, cs4231_match);
static struct platform_driver cs4231_driver = {
.driver = {
.name = "audio",
.of_match_table = cs4231_match,
},
.probe = cs4231_probe,
.remove = cs4231_remove,
};
module_platform_driver(cs4231_driver);