297 lines
9.1 KiB
C
297 lines
9.1 KiB
C
/*
|
|
* Driver for Sound Core PDAudioCF soundcard
|
|
*
|
|
* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
|
|
*
|
|
* 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 <linux/delay.h>
|
|
#include <linux/slab.h>
|
|
#include <sound/core.h>
|
|
#include <sound/info.h>
|
|
#include "pdaudiocf.h"
|
|
#include <sound/initval.h>
|
|
|
|
/*
|
|
*
|
|
*/
|
|
static unsigned char pdacf_ak4117_read(void *private_data, unsigned char reg)
|
|
{
|
|
struct snd_pdacf *chip = private_data;
|
|
unsigned long timeout;
|
|
unsigned long flags;
|
|
unsigned char res;
|
|
|
|
spin_lock_irqsave(&chip->ak4117_lock, flags);
|
|
timeout = 1000;
|
|
while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
|
|
udelay(5);
|
|
if (--timeout == 0) {
|
|
spin_unlock_irqrestore(&chip->ak4117_lock, flags);
|
|
snd_printk(KERN_ERR "AK4117 ready timeout (read)\n");
|
|
return 0;
|
|
}
|
|
}
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_AK_IFR, (u16)reg << 8);
|
|
timeout = 1000;
|
|
while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
|
|
udelay(5);
|
|
if (--timeout == 0) {
|
|
spin_unlock_irqrestore(&chip->ak4117_lock, flags);
|
|
snd_printk(KERN_ERR "AK4117 read timeout (read2)\n");
|
|
return 0;
|
|
}
|
|
}
|
|
res = (unsigned char)pdacf_reg_read(chip, PDAUDIOCF_REG_AK_IFR);
|
|
spin_unlock_irqrestore(&chip->ak4117_lock, flags);
|
|
return res;
|
|
}
|
|
|
|
static void pdacf_ak4117_write(void *private_data, unsigned char reg, unsigned char val)
|
|
{
|
|
struct snd_pdacf *chip = private_data;
|
|
unsigned long timeout;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&chip->ak4117_lock, flags);
|
|
timeout = 1000;
|
|
while (inw(chip->port + PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
|
|
udelay(5);
|
|
if (--timeout == 0) {
|
|
spin_unlock_irqrestore(&chip->ak4117_lock, flags);
|
|
snd_printk(KERN_ERR "AK4117 ready timeout (write)\n");
|
|
return;
|
|
}
|
|
}
|
|
outw((u16)reg << 8 | val | (1<<13), chip->port + PDAUDIOCF_REG_AK_IFR);
|
|
spin_unlock_irqrestore(&chip->ak4117_lock, flags);
|
|
}
|
|
|
|
#if 0
|
|
void pdacf_dump(struct snd_pdacf *chip)
|
|
{
|
|
printk(KERN_DEBUG "PDAUDIOCF DUMP (0x%lx):\n", chip->port);
|
|
printk(KERN_DEBUG "WPD : 0x%x\n",
|
|
inw(chip->port + PDAUDIOCF_REG_WDP));
|
|
printk(KERN_DEBUG "RDP : 0x%x\n",
|
|
inw(chip->port + PDAUDIOCF_REG_RDP));
|
|
printk(KERN_DEBUG "TCR : 0x%x\n",
|
|
inw(chip->port + PDAUDIOCF_REG_TCR));
|
|
printk(KERN_DEBUG "SCR : 0x%x\n",
|
|
inw(chip->port + PDAUDIOCF_REG_SCR));
|
|
printk(KERN_DEBUG "ISR : 0x%x\n",
|
|
inw(chip->port + PDAUDIOCF_REG_ISR));
|
|
printk(KERN_DEBUG "IER : 0x%x\n",
|
|
inw(chip->port + PDAUDIOCF_REG_IER));
|
|
printk(KERN_DEBUG "AK_IFR : 0x%x\n",
|
|
inw(chip->port + PDAUDIOCF_REG_AK_IFR));
|
|
}
|
|
#endif
|
|
|
|
static int pdacf_reset(struct snd_pdacf *chip, int powerdown)
|
|
{
|
|
u16 val;
|
|
|
|
val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
|
|
val |= PDAUDIOCF_PDN;
|
|
val &= ~PDAUDIOCF_RECORD; /* for sure */
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
|
|
udelay(5);
|
|
val |= PDAUDIOCF_RST;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
|
|
udelay(200);
|
|
val &= ~PDAUDIOCF_RST;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
|
|
udelay(5);
|
|
if (!powerdown) {
|
|
val &= ~PDAUDIOCF_PDN;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
|
|
udelay(200);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void pdacf_reinit(struct snd_pdacf *chip, int resume)
|
|
{
|
|
pdacf_reset(chip, 0);
|
|
if (resume)
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, chip->suspend_reg_scr);
|
|
snd_ak4117_reinit(chip->ak4117);
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, chip->regmap[PDAUDIOCF_REG_TCR>>1]);
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_IER, chip->regmap[PDAUDIOCF_REG_IER>>1]);
|
|
}
|
|
|
|
static void pdacf_proc_read(struct snd_info_entry * entry,
|
|
struct snd_info_buffer *buffer)
|
|
{
|
|
struct snd_pdacf *chip = entry->private_data;
|
|
u16 tmp;
|
|
|
|
snd_iprintf(buffer, "PDAudioCF\n\n");
|
|
tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
|
|
snd_iprintf(buffer, "FPGA revision : 0x%x\n", PDAUDIOCF_FPGAREV(tmp));
|
|
|
|
}
|
|
|
|
static void pdacf_proc_init(struct snd_pdacf *chip)
|
|
{
|
|
struct snd_info_entry *entry;
|
|
|
|
if (! snd_card_proc_new(chip->card, "pdaudiocf", &entry))
|
|
snd_info_set_text_ops(entry, chip, pdacf_proc_read);
|
|
}
|
|
|
|
struct snd_pdacf *snd_pdacf_create(struct snd_card *card)
|
|
{
|
|
struct snd_pdacf *chip;
|
|
|
|
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
|
|
if (chip == NULL)
|
|
return NULL;
|
|
chip->card = card;
|
|
mutex_init(&chip->reg_lock);
|
|
spin_lock_init(&chip->ak4117_lock);
|
|
card->private_data = chip;
|
|
|
|
pdacf_proc_init(chip);
|
|
return chip;
|
|
}
|
|
|
|
static void snd_pdacf_ak4117_change(struct ak4117 *ak4117, unsigned char c0, unsigned char c1)
|
|
{
|
|
struct snd_pdacf *chip = ak4117->change_callback_private;
|
|
u16 val;
|
|
|
|
if (!(c0 & AK4117_UNLCK))
|
|
return;
|
|
mutex_lock(&chip->reg_lock);
|
|
val = chip->regmap[PDAUDIOCF_REG_SCR>>1];
|
|
if (ak4117->rcs0 & AK4117_UNLCK)
|
|
val |= PDAUDIOCF_BLUE_LED_OFF;
|
|
else
|
|
val &= ~PDAUDIOCF_BLUE_LED_OFF;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
|
|
mutex_unlock(&chip->reg_lock);
|
|
}
|
|
|
|
int snd_pdacf_ak4117_create(struct snd_pdacf *chip)
|
|
{
|
|
int err;
|
|
u16 val;
|
|
/* design note: if we unmask PLL unlock, parity, valid, audio or auto bit interrupts */
|
|
/* from AK4117 then INT1 pin from AK4117 will be high all time, because PCMCIA interrupts are */
|
|
/* egde based and FPGA does logical OR for all interrupt sources, we cannot use these */
|
|
/* high-rate sources */
|
|
static unsigned char pgm[5] = {
|
|
AK4117_XTL_24_576M | AK4117_EXCT, /* AK4117_REG_PWRDN */
|
|
AK4117_CM_PLL_XTAL | AK4117_PKCS_128fs | AK4117_XCKS_128fs, /* AK4117_REQ_CLOCK */
|
|
AK4117_EFH_1024LRCLK | AK4117_DIF_24R | AK4117_IPS, /* AK4117_REG_IO */
|
|
0xff, /* AK4117_REG_INT0_MASK */
|
|
AK4117_MAUTO | AK4117_MAUD | AK4117_MULK | AK4117_MPAR | AK4117_MV, /* AK4117_REG_INT1_MASK */
|
|
};
|
|
|
|
err = pdacf_reset(chip, 0);
|
|
if (err < 0)
|
|
return err;
|
|
err = snd_ak4117_create(chip->card, pdacf_ak4117_read, pdacf_ak4117_write, pgm, chip, &chip->ak4117);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
val = pdacf_reg_read(chip, PDAUDIOCF_REG_TCR);
|
|
#if 1 /* normal operation */
|
|
val &= ~(PDAUDIOCF_ELIMAKMBIT|PDAUDIOCF_TESTDATASEL);
|
|
#else /* debug */
|
|
val |= PDAUDIOCF_ELIMAKMBIT;
|
|
val &= ~PDAUDIOCF_TESTDATASEL;
|
|
#endif
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, val);
|
|
|
|
/* setup the FPGA to match AK4117 setup */
|
|
val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
|
|
val &= ~(PDAUDIOCF_CLKDIV0 | PDAUDIOCF_CLKDIV1); /* use 24.576Mhz clock */
|
|
val &= ~(PDAUDIOCF_RED_LED_OFF|PDAUDIOCF_BLUE_LED_OFF);
|
|
val |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1; /* 24-bit data */
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
|
|
|
|
/* setup LEDs and IRQ */
|
|
val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
|
|
val &= ~(PDAUDIOCF_IRQLVLEN0 | PDAUDIOCF_IRQLVLEN1);
|
|
val &= ~(PDAUDIOCF_BLUEDUTY0 | PDAUDIOCF_REDDUTY0 | PDAUDIOCF_REDDUTY1);
|
|
val |= PDAUDIOCF_BLUEDUTY1 | PDAUDIOCF_HALFRATE;
|
|
val |= PDAUDIOCF_IRQOVREN | PDAUDIOCF_IRQAKMEN;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
|
|
|
|
chip->ak4117->change_callback_private = chip;
|
|
chip->ak4117->change_callback = snd_pdacf_ak4117_change;
|
|
|
|
/* update LED status */
|
|
snd_pdacf_ak4117_change(chip->ak4117, AK4117_UNLCK, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void snd_pdacf_powerdown(struct snd_pdacf *chip)
|
|
{
|
|
u16 val;
|
|
|
|
val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
|
|
chip->suspend_reg_scr = val;
|
|
val |= PDAUDIOCF_RED_LED_OFF | PDAUDIOCF_BLUE_LED_OFF;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
|
|
/* disable interrupts, but use direct write to preserve old register value in chip->regmap */
|
|
val = inw(chip->port + PDAUDIOCF_REG_IER);
|
|
val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1);
|
|
outw(val, chip->port + PDAUDIOCF_REG_IER);
|
|
pdacf_reset(chip, 1);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
int snd_pdacf_suspend(struct snd_pdacf *chip)
|
|
{
|
|
u16 val;
|
|
|
|
snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
|
|
snd_pcm_suspend_all(chip->pcm);
|
|
/* disable interrupts, but use direct write to preserve old register value in chip->regmap */
|
|
val = inw(chip->port + PDAUDIOCF_REG_IER);
|
|
val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1);
|
|
outw(val, chip->port + PDAUDIOCF_REG_IER);
|
|
chip->chip_status |= PDAUDIOCF_STAT_IS_SUSPENDED; /* ignore interrupts from now */
|
|
snd_pdacf_powerdown(chip);
|
|
return 0;
|
|
}
|
|
|
|
static inline int check_signal(struct snd_pdacf *chip)
|
|
{
|
|
return (chip->ak4117->rcs0 & AK4117_UNLCK) == 0;
|
|
}
|
|
|
|
int snd_pdacf_resume(struct snd_pdacf *chip)
|
|
{
|
|
int timeout = 40;
|
|
|
|
pdacf_reinit(chip, 1);
|
|
/* wait for AK4117's PLL */
|
|
while (timeout-- > 0 &&
|
|
(snd_ak4117_external_rate(chip->ak4117) <= 0 || !check_signal(chip)))
|
|
mdelay(1);
|
|
chip->chip_status &= ~PDAUDIOCF_STAT_IS_SUSPENDED;
|
|
snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
|
|
return 0;
|
|
}
|
|
#endif
|