forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
279 lines
8.3 KiB
279 lines
8.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* Driver for Sound Core PDAudioCF soundcard |
|
* |
|
* Copyright (c) 2003 by Jaroslav Kysela <[email protected]> |
|
*/ |
|
|
|
#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) |
|
{ |
|
snd_card_ro_proc_new(chip->card, "pdaudiocf", 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 const 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); |
|
/* 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
|
|
|