| /* |
| * 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 |
