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es18xx.c
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/*
* Driver for generic ESS AudioDrive ES18xx soundcards
* Copyright (c) by Christian Fischbach <[email protected]>
* Copyright (c) by Abramo Bagnara <[email protected]>
*
*
* 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
*
*/
/* GENERAL NOTES:
*
* BUGS:
* - There are pops (we can't delay in trigger function, cause midlevel
* often need to trigger down and then up very quickly).
* Any ideas?
* - Support for 16 bit DMA seems to be broken. I've no hardware to tune it.
*/
/*
* ES1868 NOTES:
* - The chip has one half duplex pcm (with very limited full duplex support).
*
* - Duplex stereophonic sound is impossible.
* - Record and playback must share the same frequency rate.
*
* - The driver use dma2 for playback and dma1 for capture.
*/
/*
* ES1869 NOTES:
*
* - there are a first full duplex pcm and a second playback only pcm
* (incompatible with first pcm capture)
*
* - there is support for the capture volume and ESS Spatializer 3D effect.
*
* - contrarily to some pages in DS_1869.PDF the rates can be set
* independently.
*
* - Zoom Video is implemented by sharing the FM DAC, thus the user can
* have either FM playback or Video playback but not both simultaneously.
* The Video Playback Switch mixer control toggles this choice.
*
* BUGS:
*
* - There is a major trouble I noted:
*
* using both channel for playback stereo 16 bit samples at 44100 Hz
* the second pcm (Audio1) DMA slows down irregularly and sound is garbled.
*
* The same happens using Audio1 for captureing.
*
* The Windows driver does not suffer of this (although it use Audio1
* only for captureing). I'm unable to discover why.
*
*/
/*
* ES1879 NOTES:
* - When Zoom Video is enabled (reg 0x71 bit 6 toggled on) the PCM playback
* seems to be effected (speaker_test plays a lower frequency). Can't find
* anything in the datasheet to account for this, so a Video Playback Switch
* control has been included to allow ZV to be enabled only when necessary.
* Then again on at least one test system the 0x71 bit 6 enable bit is not
* needed for ZV, so maybe the datasheet is entirely wrong here.
*/
#include <linux/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/pnp.h>
#include <linux/isapnp.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>
#define PFX "es18xx: "
struct snd_es18xx {
unsigned long port; /* port of ESS chip */
unsigned long ctrl_port; /* Control port of ESS chip */
struct resource *res_port;
struct resource *res_mpu_port;
struct resource *res_ctrl_port;
int irq; /* IRQ number of ESS chip */
int dma1; /* DMA1 */
int dma2; /* DMA2 */
unsigned short version; /* version of ESS chip */
int caps; /* Chip capabilities */
unsigned short audio2_vol; /* volume level of audio2 */
unsigned short active; /* active channel mask */
unsigned int dma1_shift;
unsigned int dma2_shift;
struct snd_pcm *pcm;
struct snd_pcm_substream *playback_a_substream;
struct snd_pcm_substream *capture_a_substream;
struct snd_pcm_substream *playback_b_substream;
struct snd_rawmidi *rmidi;
struct snd_kcontrol *hw_volume;
struct snd_kcontrol *hw_switch;
struct snd_kcontrol *master_volume;
struct snd_kcontrol *master_switch;
spinlock_t reg_lock;
spinlock_t mixer_lock;
#ifdef CONFIG_PM
unsigned char pm_reg;
#endif
#ifdef CONFIG_PNP
struct pnp_dev *dev;
struct pnp_dev *devc;
#endif
};
#define AUDIO1_IRQ 0x01
#define AUDIO2_IRQ 0x02
#define HWV_IRQ 0x04
#define MPU_IRQ 0x08
#define ES18XX_PCM2 0x0001 /* Has two useable PCM */
#define ES18XX_SPATIALIZER 0x0002 /* Has 3D Spatializer */
#define ES18XX_RECMIX 0x0004 /* Has record mixer */
#define ES18XX_DUPLEX_MONO 0x0008 /* Has mono duplex only */
#define ES18XX_DUPLEX_SAME 0x0010 /* Playback and record must share the same rate */
#define ES18XX_NEW_RATE 0x0020 /* More precise rate setting */
#define ES18XX_AUXB 0x0040 /* AuxB mixer control */
#define ES18XX_HWV 0x0080 /* Has separate hardware volume mixer controls*/
#define ES18XX_MONO 0x0100 /* Mono_in mixer control */
#define ES18XX_I2S 0x0200 /* I2S mixer control */
#define ES18XX_MUTEREC 0x0400 /* Record source can be muted */
#define ES18XX_CONTROL 0x0800 /* Has control ports */
/* Power Management */
#define ES18XX_PM 0x07
#define ES18XX_PM_GPO0 0x01
#define ES18XX_PM_GPO1 0x02
#define ES18XX_PM_PDR 0x04
#define ES18XX_PM_ANA 0x08
#define ES18XX_PM_FM 0x020
#define ES18XX_PM_SUS 0x080
/* Lowlevel */
#define DAC1 0x01
#define ADC1 0x02
#define DAC2 0x04
#define MILLISECOND 10000
static int snd_es18xx_dsp_command(struct snd_es18xx *chip, unsigned char val)
{
int i;
for(i = MILLISECOND; i; i--)
if ((inb(chip->port + 0x0C) & 0x80) == 0) {
outb(val, chip->port + 0x0C);
return 0;
}
snd_printk(KERN_ERR "dsp_command: timeout (0x%x)\n", val);
return -EINVAL;
}
static int snd_es18xx_dsp_get_byte(struct snd_es18xx *chip)
{
int i;
for(i = MILLISECOND/10; i; i--)
if (inb(chip->port + 0x0C) & 0x40)
return inb(chip->port + 0x0A);
snd_printk(KERN_ERR "dsp_get_byte failed: 0x%lx = 0x%x!!!\n",
chip->port + 0x0A, inb(chip->port + 0x0A));
return -ENODEV;
}
#undef REG_DEBUG
static int snd_es18xx_write(struct snd_es18xx *chip,
unsigned char reg, unsigned char data)
{
unsigned long flags;
int ret;
spin_lock_irqsave(&chip->reg_lock, flags);
ret = snd_es18xx_dsp_command(chip, reg);
if (ret < 0)
goto end;
ret = snd_es18xx_dsp_command(chip, data);
end:
spin_unlock_irqrestore(&chip->reg_lock, flags);
#ifdef REG_DEBUG
snd_printk(KERN_DEBUG "Reg %02x set to %02x\n", reg, data);
#endif
return ret;
}
static int snd_es18xx_read(struct snd_es18xx *chip, unsigned char reg)
{
unsigned long flags;
int ret, data;
spin_lock_irqsave(&chip->reg_lock, flags);
ret = snd_es18xx_dsp_command(chip, 0xC0);
if (ret < 0)
goto end;
ret = snd_es18xx_dsp_command(chip, reg);
if (ret < 0)
goto end;
data = snd_es18xx_dsp_get_byte(chip);
ret = data;
#ifdef REG_DEBUG
snd_printk(KERN_DEBUG "Reg %02x now is %02x (%d)\n", reg, data, ret);
#endif
end:
spin_unlock_irqrestore(&chip->reg_lock, flags);
return ret;
}
/* Return old value */
static int snd_es18xx_bits(struct snd_es18xx *chip, unsigned char reg,
unsigned char mask, unsigned char val)
{
int ret;
unsigned char old, new, oval;
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
ret = snd_es18xx_dsp_command(chip, 0xC0);
if (ret < 0)
goto end;
ret = snd_es18xx_dsp_command(chip, reg);
if (ret < 0)
goto end;
ret = snd_es18xx_dsp_get_byte(chip);
if (ret < 0) {
goto end;
}
old = ret;
oval = old & mask;
if (val != oval) {
ret = snd_es18xx_dsp_command(chip, reg);
if (ret < 0)
goto end;
new = (old & ~mask) | (val & mask);
ret = snd_es18xx_dsp_command(chip, new);
if (ret < 0)
goto end;
#ifdef REG_DEBUG
snd_printk(KERN_DEBUG "Reg %02x was %02x, set to %02x (%d)\n",
reg, old, new, ret);
#endif
}
ret = oval;
end:
spin_unlock_irqrestore(&chip->reg_lock, flags);
return ret;
}
static inline void snd_es18xx_mixer_write(struct snd_es18xx *chip,
unsigned char reg, unsigned char data)
{
unsigned long flags;
spin_lock_irqsave(&chip->mixer_lock, flags);
outb(reg, chip->port + 0x04);
outb(data, chip->port + 0x05);
spin_unlock_irqrestore(&chip->mixer_lock, flags);
#ifdef REG_DEBUG
snd_printk(KERN_DEBUG "Mixer reg %02x set to %02x\n", reg, data);
#endif
}
static inline int snd_es18xx_mixer_read(struct snd_es18xx *chip, unsigned char reg)
{
unsigned long flags;
int data;
spin_lock_irqsave(&chip->mixer_lock, flags);
outb(reg, chip->port + 0x04);
data = inb(chip->port + 0x05);
spin_unlock_irqrestore(&chip->mixer_lock, flags);
#ifdef REG_DEBUG
snd_printk(KERN_DEBUG "Mixer reg %02x now is %02x\n", reg, data);
#endif
return data;
}
/* Return old value */
static inline int snd_es18xx_mixer_bits(struct snd_es18xx *chip, unsigned char reg,
unsigned char mask, unsigned char val)
{
unsigned char old, new, oval;
unsigned long flags;
spin_lock_irqsave(&chip->mixer_lock, flags);
outb(reg, chip->port + 0x04);
old = inb(chip->port + 0x05);
oval = old & mask;
if (val != oval) {
new = (old & ~mask) | (val & mask);
outb(new, chip->port + 0x05);
#ifdef REG_DEBUG
snd_printk(KERN_DEBUG "Mixer reg %02x was %02x, set to %02x\n",
reg, old, new);
#endif
}
spin_unlock_irqrestore(&chip->mixer_lock, flags);
return oval;
}
static inline int snd_es18xx_mixer_writable(struct snd_es18xx *chip, unsigned char reg,
unsigned char mask)
{
int old, expected, new;
unsigned long flags;
spin_lock_irqsave(&chip->mixer_lock, flags);
outb(reg, chip->port + 0x04);
old = inb(chip->port + 0x05);
expected = old ^ mask;
outb(expected, chip->port + 0x05);
new = inb(chip->port + 0x05);
spin_unlock_irqrestore(&chip->mixer_lock, flags);
#ifdef REG_DEBUG
snd_printk(KERN_DEBUG "Mixer reg %02x was %02x, set to %02x, now is %02x\n",
reg, old, expected, new);
#endif
return expected == new;
}
static int snd_es18xx_reset(struct snd_es18xx *chip)
{
int i;
outb(0x03, chip->port + 0x06);
inb(chip->port + 0x06);
outb(0x00, chip->port + 0x06);
for(i = 0; i < MILLISECOND && !(inb(chip->port + 0x0E) & 0x80); i++);
if (inb(chip->port + 0x0A) != 0xAA)
return -1;
return 0;
}
static int snd_es18xx_reset_fifo(struct snd_es18xx *chip)
{
outb(0x02, chip->port + 0x06);
inb(chip->port + 0x06);
outb(0x00, chip->port + 0x06);
return 0;
}
static struct snd_ratnum new_clocks[2] = {
{
.num = 793800,
.den_min = 1,
.den_max = 128,
.den_step = 1,
},
{
.num = 768000,
.den_min = 1,
.den_max = 128,
.den_step = 1,
}
};
static struct snd_pcm_hw_constraint_ratnums new_hw_constraints_clocks = {
.nrats = 2,
.rats = new_clocks,
};
static struct snd_ratnum old_clocks[2] = {
{
.num = 795444,
.den_min = 1,
.den_max = 128,
.den_step = 1,
},
{
.num = 397722,
.den_min = 1,
.den_max = 128,
.den_step = 1,
}
};
static struct snd_pcm_hw_constraint_ratnums old_hw_constraints_clocks = {
.nrats = 2,
.rats = old_clocks,
};
static void snd_es18xx_rate_set(struct snd_es18xx *chip,
struct snd_pcm_substream *substream,
int mode)
{
unsigned int bits, div0;
struct snd_pcm_runtime *runtime = substream->runtime;
if (chip->caps & ES18XX_NEW_RATE) {
if (runtime->rate_num == new_clocks[0].num)
bits = 128 - runtime->rate_den;
else
bits = 256 - runtime->rate_den;
} else {
if (runtime->rate_num == old_clocks[0].num)
bits = 256 - runtime->rate_den;
else
bits = 128 - runtime->rate_den;
}
/* set filter register */
div0 = 256 - 7160000*20/(8*82*runtime->rate);
if ((chip->caps & ES18XX_PCM2) && mode == DAC2) {
snd_es18xx_mixer_write(chip, 0x70, bits);
/*
* Comment from kernel oss driver:
* FKS: fascinating: 0x72 doesn't seem to work.
*/
snd_es18xx_write(chip, 0xA2, div0);
snd_es18xx_mixer_write(chip, 0x72, div0);
} else {
snd_es18xx_write(chip, 0xA1, bits);
snd_es18xx_write(chip, 0xA2, div0);
}
}
static int snd_es18xx_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
int shift, err;
shift = 0;
if (params_channels(hw_params) == 2)
shift++;
if (snd_pcm_format_width(params_format(hw_params)) == 16)
shift++;
if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
if ((chip->caps & ES18XX_DUPLEX_MONO) &&
(chip->capture_a_substream) &&
params_channels(hw_params) != 1) {
_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
return -EBUSY;
}
chip->dma2_shift = shift;
} else {
chip->dma1_shift = shift;
}
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
return 0;
}
static int snd_es18xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_es18xx_playback1_prepare(struct snd_es18xx *chip,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
snd_es18xx_rate_set(chip, substream, DAC2);
/* Transfer Count Reload */
count = 0x10000 - count;
snd_es18xx_mixer_write(chip, 0x74, count & 0xff);
snd_es18xx_mixer_write(chip, 0x76, count >> 8);
/* Set format */
snd_es18xx_mixer_bits(chip, 0x7A, 0x07,
((runtime->channels == 1) ? 0x00 : 0x02) |
(snd_pcm_format_width(runtime->format) == 16 ? 0x01 : 0x00) |
(snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x04));
/* Set DMA controller */
snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
return 0;
}
static int snd_es18xx_playback1_trigger(struct snd_es18xx *chip,
struct snd_pcm_substream *substream,
int cmd)
{
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
if (chip->active & DAC2)
return 0;
chip->active |= DAC2;
/* Start DMA */
if (chip->dma2 >= 4)
snd_es18xx_mixer_write(chip, 0x78, 0xb3);
else
snd_es18xx_mixer_write(chip, 0x78, 0x93);
#ifdef AVOID_POPS
/* Avoid pops */
udelay(100000);
if (chip->caps & ES18XX_PCM2)
/* Restore Audio 2 volume */
snd_es18xx_mixer_write(chip, 0x7C, chip->audio2_vol);
else
/* Enable PCM output */
snd_es18xx_dsp_command(chip, 0xD1);
#endif
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
if (!(chip->active & DAC2))
return 0;
chip->active &= ~DAC2;
/* Stop DMA */
snd_es18xx_mixer_write(chip, 0x78, 0x00);
#ifdef AVOID_POPS
udelay(25000);
if (chip->caps & ES18XX_PCM2)
/* Set Audio 2 volume to 0 */
snd_es18xx_mixer_write(chip, 0x7C, 0);
else
/* Disable PCM output */
snd_es18xx_dsp_command(chip, 0xD3);
#endif
break;
default:
return -EINVAL;
}
return 0;
}
static int snd_es18xx_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
int shift, err;
shift = 0;
if ((chip->caps & ES18XX_DUPLEX_MONO) &&
chip->playback_a_substream &&
params_channels(hw_params) != 1) {
_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
return -EBUSY;
}
if (params_channels(hw_params) == 2)
shift++;
if (snd_pcm_format_width(params_format(hw_params)) == 16)
shift++;
chip->dma1_shift = shift;
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
return 0;
}
static int snd_es18xx_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
snd_es18xx_reset_fifo(chip);
/* Set stereo/mono */
snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
snd_es18xx_rate_set(chip, substream, ADC1);
/* Transfer Count Reload */
count = 0x10000 - count;
snd_es18xx_write(chip, 0xA4, count & 0xff);
snd_es18xx_write(chip, 0xA5, count >> 8);
#ifdef AVOID_POPS
udelay(100000);
#endif
/* Set format */
snd_es18xx_write(chip, 0xB7,
snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
snd_es18xx_write(chip, 0xB7, 0x90 |
((runtime->channels == 1) ? 0x40 : 0x08) |
(snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
(snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
/* Set DMA controller */
snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
return 0;
}
static int snd_es18xx_capture_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
if (chip->active & ADC1)
return 0;
chip->active |= ADC1;
/* Start DMA */
snd_es18xx_write(chip, 0xB8, 0x0f);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
if (!(chip->active & ADC1))
return 0;
chip->active &= ~ADC1;
/* Stop DMA */
snd_es18xx_write(chip, 0xB8, 0x00);
break;
default:
return -EINVAL;
}
return 0;
}
static int snd_es18xx_playback2_prepare(struct snd_es18xx *chip,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
snd_es18xx_reset_fifo(chip);
/* Set stereo/mono */
snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
snd_es18xx_rate_set(chip, substream, DAC1);
/* Transfer Count Reload */
count = 0x10000 - count;
snd_es18xx_write(chip, 0xA4, count & 0xff);
snd_es18xx_write(chip, 0xA5, count >> 8);
/* Set format */
snd_es18xx_write(chip, 0xB6,
snd_pcm_format_unsigned(runtime->format) ? 0x80 : 0x00);
snd_es18xx_write(chip, 0xB7,
snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
snd_es18xx_write(chip, 0xB7, 0x90 |
(runtime->channels == 1 ? 0x40 : 0x08) |
(snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
(snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
/* Set DMA controller */
snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
return 0;
}
static int snd_es18xx_playback2_trigger(struct snd_es18xx *chip,
struct snd_pcm_substream *substream,
int cmd)
{
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
if (chip->active & DAC1)
return 0;
chip->active |= DAC1;
/* Start DMA */
snd_es18xx_write(chip, 0xB8, 0x05);
#ifdef AVOID_POPS
/* Avoid pops */
udelay(100000);
/* Enable Audio 1 */
snd_es18xx_dsp_command(chip, 0xD1);
#endif
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
if (!(chip->active & DAC1))
return 0;
chip->active &= ~DAC1;
/* Stop DMA */
snd_es18xx_write(chip, 0xB8, 0x00);
#ifdef AVOID_POPS
/* Avoid pops */
udelay(25000);
/* Disable Audio 1 */
snd_es18xx_dsp_command(chip, 0xD3);
#endif
break;
default:
return -EINVAL;
}
return 0;
}
static int snd_es18xx_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
return snd_es18xx_playback1_prepare(chip, substream);
else
return snd_es18xx_playback2_prepare(chip, substream);
}
static int snd_es18xx_playback_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
return snd_es18xx_playback1_trigger(chip, substream, cmd);
else
return snd_es18xx_playback2_trigger(chip, substream, cmd);
}
static irqreturn_t snd_es18xx_interrupt(int irq, void *dev_id)
{
struct snd_card *card = dev_id;
struct snd_es18xx *chip = card->private_data;
unsigned char status;
if (chip->caps & ES18XX_CONTROL) {
/* Read Interrupt status */
status = inb(chip->ctrl_port + 6);
} else {
/* Read Interrupt status */
status = snd_es18xx_mixer_read(chip, 0x7f) >> 4;
}
#if 0
else {
status = 0;
if (inb(chip->port + 0x0C) & 0x01)
status |= AUDIO1_IRQ;
if (snd_es18xx_mixer_read(chip, 0x7A) & 0x80)
status |= AUDIO2_IRQ;
if ((chip->caps & ES18XX_HWV) &&
snd_es18xx_mixer_read(chip, 0x64) & 0x10)
status |= HWV_IRQ;
}
#endif
/* Audio 1 & Audio 2 */
if (status & AUDIO2_IRQ) {
if (chip->active & DAC2)
snd_pcm_period_elapsed(chip->playback_a_substream);
/* ack interrupt */
snd_es18xx_mixer_bits(chip, 0x7A, 0x80, 0x00);
}
if (status & AUDIO1_IRQ) {
/* ok.. capture is active */
if (chip->active & ADC1)
snd_pcm_period_elapsed(chip->capture_a_substream);
/* ok.. playback2 is active */
else if (chip->active & DAC1)
snd_pcm_period_elapsed(chip->playback_b_substream);
/* ack interrupt */
inb(chip->port + 0x0E);
}
/* MPU */
if ((status & MPU_IRQ) && chip->rmidi)
snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
/* Hardware volume */
if (status & HWV_IRQ) {
int split = 0;
if (chip->caps & ES18XX_HWV) {
split = snd_es18xx_mixer_read(chip, 0x64) & 0x80;
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&chip->hw_switch->id);
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&chip->hw_volume->id);
}
if (!split) {
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&chip->master_switch->id);
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&chip->master_volume->id);
}
/* ack interrupt */
snd_es18xx_mixer_write(chip, 0x66, 0x00);
}
return IRQ_HANDLED;
}
static snd_pcm_uframes_t snd_es18xx_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
int pos;
if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
if (!(chip->active & DAC2))
return 0;
pos = snd_dma_pointer(chip->dma2, size);
return pos >> chip->dma2_shift;
} else {
if (!(chip->active & DAC1))
return 0;
pos = snd_dma_pointer(chip->dma1, size);
return pos >> chip->dma1_shift;
}
}
static snd_pcm_uframes_t snd_es18xx_capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
int pos;
if (!(chip->active & ADC1))
return 0;
pos = snd_dma_pointer(chip->dma1, size);
return pos >> chip->dma1_shift;
}
static struct snd_pcm_hardware snd_es18xx_playback =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = 65536,
.period_bytes_min = 64,
.period_bytes_max = 65536,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
static struct snd_pcm_hardware snd_es18xx_capture =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = 65536,
.period_bytes_min = 64,
.period_bytes_max = 65536,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
static int snd_es18xx_playback_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
if ((chip->caps & ES18XX_DUPLEX_MONO) &&
chip->capture_a_substream &&
chip->capture_a_substream->runtime->channels != 1)
return -EAGAIN;
chip->playback_a_substream = substream;
} else if (substream->number <= 1) {
if (chip->capture_a_substream)
return -EAGAIN;
chip->playback_b_substream = substream;
} else {
snd_BUG();
return -EINVAL;
}
substream->runtime->hw = snd_es18xx_playback;
snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
(chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
return 0;
}
static int snd_es18xx_capture_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
if (chip->playback_b_substream)
return -EAGAIN;
if ((chip->caps & ES18XX_DUPLEX_MONO) &&
chip->playback_a_substream &&
chip->playback_a_substream->runtime->channels != 1)
return -EAGAIN;
chip->capture_a_substream = substream;
substream->runtime->hw = snd_es18xx_capture;
snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
(chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
return 0;
}
static int snd_es18xx_playback_close(struct snd_pcm_substream *substream)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
chip->playback_a_substream = NULL;
else
chip->playback_b_substream = NULL;
snd_pcm_lib_free_pages(substream);
return 0;
}
static int snd_es18xx_capture_close(struct snd_pcm_substream *substream)
{
struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
chip->capture_a_substream = NULL;
snd_pcm_lib_free_pages(substream);
return 0;
}
/*
* MIXER part
*/
/* Record source mux routines:
* Depending on the chipset this mux switches between 4, 5, or 8 possible inputs.
* bit table for the 4/5 source mux:
* reg 1C:
* b2 b1 b0 muxSource
* x 0 x microphone
* 0 1 x CD
* 1 1 0 line
* 1 1 1 mixer
* if it's "mixer" and it's a 5 source mux chipset then reg 7A bit 3 determines
* either the play mixer or the capture mixer.
*
* "map4Source" translates from source number to reg bit pattern
* "invMap4Source" translates from reg bit pattern to source number
*/
static int snd_es18xx_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
static char *texts5Source[5] = {
"Mic", "CD", "Line", "Master", "Mix"
};
static char *texts8Source[8] = {
"Mic", "Mic Master", "CD", "AOUT",
"Mic1", "Mix", "Line", "Master"
};
struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
switch (chip->version) {
case 0x1868:
case 0x1878:
uinfo->value.enumerated.items = 4;
if (uinfo->value.enumerated.item > 3)
uinfo->value.enumerated.item = 3;
strcpy(uinfo->value.enumerated.name,
texts5Source[uinfo->value.enumerated.item]);
break;
case 0x1887:
case 0x1888:
uinfo->value.enumerated.items = 5;
if (uinfo->value.enumerated.item > 4)
uinfo->value.enumerated.item = 4;
strcpy(uinfo->value.enumerated.name, texts5Source[uinfo->value.enumerated.item]);
break;
case 0x1869: /* DS somewhat contradictory for 1869: could be be 5 or 8 */
case 0x1879:
uinfo->value.enumerated.items = 8;
if (uinfo->value.enumerated.item > 7)
uinfo->value.enumerated.item = 7;
strcpy(uinfo->value.enumerated.name, texts8Source[uinfo->value.enumerated.item]);
break;