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cs4231_lib.c
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cs4231_lib.c
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/*
* Copyright (c) by Jaroslav Kysela <[email protected]>
* Routines for control of CS4231(A)/CS4232/InterWave & compatible chips
*
* Bugs:
* - sometimes record brokes playback with WSS portion of
* Yamaha OPL3-SA3 chip
* - CS4231 (GUS MAX) - still trouble with occasional noises
* - broken initialization?
*
* 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/driver.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/core.h>
#include <sound/cs4231.h>
#include <sound/pcm_params.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/irq.h>
MODULE_AUTHOR("Jaroslav Kysela <[email protected]>");
MODULE_DESCRIPTION("Routines for control of CS4231(A)/CS4232/InterWave & compatible chips");
MODULE_LICENSE("GPL");
#if 0
#define SNDRV_DEBUG_MCE
#endif
/*
* Some variables
*/
static 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 unsigned int rates[14] = {
5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
27042, 32000, 33075, 37800, 44100, 48000
};
static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = ARRAY_SIZE(rates),
.list = rates,
.mask = 0,
};
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 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 */
0xfc, /* 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 */
0xcf, /* 1a/26 - mioc */
0x00, /* 1b/27 - ramoc/reserved */
0x20, /* 1c/28 - cdfr */
0x00, /* 1d/29 - res4 */
0x00, /* 1e/30 - cbru */
0x00, /* 1f/31 - cbrl */
};
/*
* Basic I/O functions
*/
static inline void cs4231_outb(struct snd_cs4231 *chip, u8 offset, u8 val)
{
outb(val, chip->port + offset);
}
static inline u8 cs4231_inb(struct snd_cs4231 *chip, u8 offset)
{
return inb(chip->port + offset);
}
static void snd_cs4231_wait(struct snd_cs4231 *chip)
{
int timeout;
for (timeout = 250;
timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
timeout--)
udelay(100);
}
static 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;
snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
chip->image[reg] = tmp;
if (!chip->calibrate_mute) {
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
wmb();
cs4231_outb(chip, CS4231P(REG), tmp);
mb();
}
}
static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
{
int timeout;
for (timeout = 250;
timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
timeout--)
udelay(10);
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
cs4231_outb(chip, CS4231P(REG), value);
mb();
}
void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
{
snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
cs4231_outb(chip, CS4231P(REG), value);
chip->image[reg] = value;
mb();
snd_printdd("codec out - reg 0x%x = 0x%x\n",
chip->mce_bit | reg, value);
}
unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
{
snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
#endif
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
mb();
return cs4231_inb(chip, CS4231P(REG));
}
void snd_cs4236_ext_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char val)
{
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
cs4231_outb(chip, CS4231P(REG), val);
chip->eimage[CS4236_REG(reg)] = val;
#if 0
printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
#endif
}
unsigned char snd_cs4236_ext_in(struct snd_cs4231 *chip, unsigned char reg)
{
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
#if 1
return cs4231_inb(chip, CS4231P(REG));
#else
{
unsigned char res;
res = cs4231_inb(chip, CS4231P(REG));
printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
return res;
}
#endif
}
#if 0
static void snd_cs4231_debug(struct snd_cs4231 *chip)
{
printk("CS4231 REGS: INDEX = 0x%02x ", cs4231_inb(chip, CS4231P(REGSEL)));
printk(" STATUS = 0x%02x\n", cs4231_inb(chip, CS4231P(STATUS)));
printk(" 0x00: left input = 0x%02x ", snd_cs4231_in(chip, 0x00));
printk(" 0x10: alt 1 (CFIG 2) = 0x%02x\n", snd_cs4231_in(chip, 0x10));
printk(" 0x01: right input = 0x%02x ", snd_cs4231_in(chip, 0x01));
printk(" 0x11: alt 2 (CFIG 3) = 0x%02x\n", snd_cs4231_in(chip, 0x11));
printk(" 0x02: GF1 left input = 0x%02x ", snd_cs4231_in(chip, 0x02));
printk(" 0x12: left line in = 0x%02x\n", snd_cs4231_in(chip, 0x12));
printk(" 0x03: GF1 right input = 0x%02x ", snd_cs4231_in(chip, 0x03));
printk(" 0x13: right line in = 0x%02x\n", snd_cs4231_in(chip, 0x13));
printk(" 0x04: CD left input = 0x%02x ", snd_cs4231_in(chip, 0x04));
printk(" 0x14: timer low = 0x%02x\n", snd_cs4231_in(chip, 0x14));
printk(" 0x05: CD right input = 0x%02x ", snd_cs4231_in(chip, 0x05));
printk(" 0x15: timer high = 0x%02x\n", snd_cs4231_in(chip, 0x15));
printk(" 0x06: left output = 0x%02x ", snd_cs4231_in(chip, 0x06));
printk(" 0x16: left MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x16));
printk(" 0x07: right output = 0x%02x ", snd_cs4231_in(chip, 0x07));
printk(" 0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
printk(" 0x08: playback format = 0x%02x ", snd_cs4231_in(chip, 0x08));
printk(" 0x18: IRQ status = 0x%02x\n", snd_cs4231_in(chip, 0x18));
printk(" 0x09: iface (CFIG 1) = 0x%02x ", snd_cs4231_in(chip, 0x09));
printk(" 0x19: left line out = 0x%02x\n", snd_cs4231_in(chip, 0x19));
printk(" 0x0a: pin control = 0x%02x ", snd_cs4231_in(chip, 0x0a));
printk(" 0x1a: mono control = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
printk(" 0x0b: init & status = 0x%02x ", snd_cs4231_in(chip, 0x0b));
printk(" 0x1b: right line out = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
printk(" 0x0c: revision & mode = 0x%02x ", snd_cs4231_in(chip, 0x0c));
printk(" 0x1c: record format = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
printk(" 0x0d: loopback = 0x%02x ", snd_cs4231_in(chip, 0x0d));
printk(" 0x1d: var freq (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
printk(" 0x0e: ply upr count = 0x%02x ", snd_cs4231_in(chip, 0x0e));
printk(" 0x1e: ply lwr count = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
printk(" 0x0f: rec upr count = 0x%02x ", snd_cs4231_in(chip, 0x0f));
printk(" 0x1f: rec lwr count = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
}
#endif
/*
* CS4231 detection / MCE routines
*/
static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
{
int timeout;
/* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
for (timeout = 5; timeout > 0; timeout--)
cs4231_inb(chip, CS4231P(REGSEL));
/* end of cleanup sequence */
for (timeout = 250;
timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
timeout--)
udelay(10);
}
void snd_cs4231_mce_up(struct snd_cs4231 *chip)
{
unsigned long flags;
int timeout;
snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("mce_up - auto calibration time out (0)\n");
#endif
spin_lock_irqsave(&chip->reg_lock, flags);
chip->mce_bit |= CS4231_MCE;
timeout = cs4231_inb(chip, CS4231P(REGSEL));
if (timeout == 0x80)
snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
if (!(timeout & CS4231_MCE))
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
void snd_cs4231_mce_down(struct snd_cs4231 *chip)
{
unsigned long flags;
unsigned long end_time;
int timeout;
snd_cs4231_busy_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
#endif
spin_lock_irqsave(&chip->reg_lock, flags);
chip->mce_bit &= ~CS4231_MCE;
timeout = cs4231_inb(chip, CS4231P(REGSEL));
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (timeout == 0x80)
snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
if ((timeout & CS4231_MCE) == 0 ||
!(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
return;
}
snd_cs4231_busy_wait(chip);
/*
* Wait for (possible -- during init auto-calibration may not be set)
* calibration process to start. Needs upto 5 sample periods on AD1848
* which at the slowest possible rate of 5.5125 kHz means 907 us.
*/
msleep(1);
snd_printdd("(1) jiffies = %lu\n", jiffies);
/* check condition up to 250 ms */
end_time = jiffies + msecs_to_jiffies(250);
while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
CS4231_CALIB_IN_PROGRESS) {
if (time_after(jiffies, end_time)) {
snd_printk(KERN_ERR "mce_down - "
"auto calibration time out (2)\n");
return;
}
msleep(1);
}
snd_printdd("(2) jiffies = %lu\n", jiffies);
/* check condition up to 100 ms */
end_time = jiffies + msecs_to_jiffies(100);
while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
if (time_after(jiffies, end_time)) {
snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
return;
}
msleep(1);
}
snd_printdd("(3) jiffies = %lu\n", jiffies);
snd_printd("mce_down - exit = 0x%x\n", cs4231_inb(chip, CS4231P(REGSEL)));
}
static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
{
switch (format & 0xe0) {
case CS4231_LINEAR_16:
case CS4231_LINEAR_16_BIG:
size >>= 1;
break;
case CS4231_ADPCM_16:
return size >> 2;
}
if (format & CS4231_STEREO)
size >>= 1;
return size;
}
static int snd_cs4231_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
int result = 0;
unsigned int what;
struct snd_pcm_substream *s;
int do_start;
#if 0
printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, cs4231_inb(chip, CS4231P(STATUS)));
#endif
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
do_start = 1; break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
do_start = 0; break;
default:
return -EINVAL;
}
what = 0;
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(&chip->reg_lock);
if (do_start) {
chip->image[CS4231_IFACE_CTRL] |= what;
if (chip->trigger)
chip->trigger(chip, what, 1);
} else {
chip->image[CS4231_IFACE_CTRL] &= ~what;
if (chip->trigger)
chip->trigger(chip, what, 0);
}
snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
spin_unlock(&chip->reg_lock);
#if 0
snd_cs4231_debug(chip);
#endif
return result;
}
/*
* CODEC I/O
*/
static unsigned char snd_cs4231_get_rate(unsigned int rate)
{
int i;
for (i = 0; i < ARRAY_SIZE(rates); i++)
if (rate == rates[i])
return freq_bits[i];
// snd_BUG();
return freq_bits[ARRAY_SIZE(rates) - 1];
}
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;
#if 0
snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
#endif
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->reg_lock, flags);
if (chip->calibrate_mute == mute) {
spin_unlock_irqrestore(&chip->reg_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]);
if (chip->hardware == CS4231_HW_INTERWAVE) {
snd_cs4231_dout(chip, CS4231_LEFT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_LEFT_MIC_INPUT]);
snd_cs4231_dout(chip, CS4231_RIGHT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_MIC_INPUT]);
snd_cs4231_dout(chip, CS4231_LINE_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_LEFT_OUTPUT]);
snd_cs4231_dout(chip, CS4231_LINE_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_RIGHT_OUTPUT]);
}
chip->calibrate_mute = mute;
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
struct snd_pcm_hw_params *params,
unsigned char pdfr)
{
unsigned long flags;
int full_calib = 1;
mutex_lock(&chip->mce_mutex);
snd_cs4231_calibrate_mute(chip, 1);
if (chip->hardware == CS4231_HW_CS4231A ||
(chip->hardware & CS4231_HW_CS4232_MASK)) {
spin_lock_irqsave(&chip->reg_lock, flags);
if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) { /* rate is same? */
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
udelay(100); /* Fixes audible clicks at least on GUS MAX */
full_calib = 0;
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
if (full_calib) {
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
if (chip->hardware != CS4231_HW_INTERWAVE && !chip->single_dma) {
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
(pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
pdfr);
} else {
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (chip->hardware == CS4231_HW_OPL3SA2)
udelay(100); /* this seems to help */
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;
int full_calib = 1;
mutex_lock(&chip->mce_mutex);
snd_cs4231_calibrate_mute(chip, 1);
if (chip->hardware == CS4231_HW_CS4231A ||
(chip->hardware & CS4231_HW_CS4232_MASK)) {
spin_lock_irqsave(&chip->reg_lock, flags);
if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) || /* rate is same? */
(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT] = cdfr);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
full_calib = 0;
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
if (full_calib) {
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
if (chip->hardware != CS4231_HW_INTERWAVE) {
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
((chip->single_dma ? cdfr : chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
(cdfr & 0x0f));
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_cs4231_mce_down(chip);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
}
}
snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
spin_unlock_irqrestore(&chip->reg_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);
if (chip->hardware & CS4231_HW_CS4236B_MASK)
return 14467;
else
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->reg_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->reg_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->reg_lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
spin_unlock_irqrestore(&chip->reg_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_printk("init: (1)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_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->reg_lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("init: (2)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
#endif
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("init: (4)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("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) ||
((chip->mode & CS4231_MODE_OPEN) && chip->single_dma)) {
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->reg_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_outb(chip, CS4231P(STATUS), 0); /* clear IRQ */
cs4231_outb(chip, CS4231P(STATUS), 0); /* clear IRQ */
chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
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->reg_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->reg_lock, flags);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
cs4231_outb(chip, CS4231P(STATUS), 0); /* clear IRQ */
cs4231_outb(chip, CS4231P(STATUS), 0); /* clear IRQ */
chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
/* 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->reg_lock, flags);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_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->reg_lock, flags);
snd_cs4231_mce_down(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
}
/* clear IRQ again */
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
cs4231_outb(chip, CS4231P(STATUS), 0); /* clear IRQ */
cs4231_outb(chip, CS4231P(STATUS), 0); /* clear IRQ */
spin_unlock_irqrestore(&chip->reg_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 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;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
snd_cs4231_get_rate(params_rate(hw_params));
chip->set_playback_format(chip, hw_params, new_pdfr);
return 0;
}
static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
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;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
spin_lock_irqsave(&chip->reg_lock, flags);
chip->p_dma_size = size;
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
count = snd_cs4231_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
spin_unlock_irqrestore(&chip->reg_lock, flags);
#if 0
snd_cs4231_debug(chip);
#endif
return 0;
}
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;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
snd_cs4231_get_rate(params_rate(hw_params));
chip->set_capture_format(chip, hw_params, new_cdfr);
return 0;
}
static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_cs4231_capture_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;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
spin_lock_irqsave(&chip->reg_lock, flags);
chip->c_dma_size = size;
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
count = snd_cs4231_get_count(chip->image[CS4231_REC_FORMAT], count) - 1;
if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
} else {
snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
snd_cs4231_out(chip, CS4231_REC_UPR_CNT, (unsigned char) (count >> 8));
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static void snd_cs4231_overrange(struct snd_cs4231 *chip)
{
unsigned long flags;
unsigned char res;
spin_lock_irqsave(&chip->reg_lock, flags);
res = snd_cs4231_in(chip, CS4231_TEST_INIT);
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (res & (0x08 | 0x02)) /* detect overrange only above 0dB; may be user selectable? */
chip->capture_substream->runtime->overrange++;
}
irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id)
{
struct snd_cs4231 *chip = dev_id;
unsigned char status;
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 (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
if (status & CS4231_PLAYBACK_IRQ) {
if (chip->mode & CS4231_MODE_PLAY) {
if (chip->playback_substream)
snd_pcm_period_elapsed(chip->playback_substream);
}
if (chip->mode & CS4231_MODE_RECORD) {
if (chip->capture_substream) {
snd_cs4231_overrange(chip);
snd_pcm_period_elapsed(chip->capture_substream);
}
}
}
} else {
if (status & CS4231_PLAYBACK_IRQ) {
if (chip->playback_substream)
snd_pcm_period_elapsed(chip->playback_substream);
}
if (status & CS4231_RECORD_IRQ) {
if (chip->capture_substream) {
snd_cs4231_overrange(chip);
snd_pcm_period_elapsed(chip->capture_substream);
}
}
}
spin_lock(&chip->reg_lock);
snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
spin_unlock(&chip->reg_lock);
return IRQ_HANDLED;
}
static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
size_t ptr;
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
return 0;
ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
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);
size_t ptr;
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
return 0;
ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
return bytes_to_frames(substream->runtime, ptr);
}
/*
*/
static int snd_cs4231_probe(struct snd_cs4231 *chip)
{
unsigned long flags;
int i, id, rev;
unsigned char *ptr;
unsigned int hw;
#if 0
snd_cs4231_debug(chip);
#endif
id = 0;
for (i = 0; i < 50; i++) {
mb();
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
udelay(2000);
else {
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (id == 0x0a)