diff options
Diffstat (limited to 'sound/pcmcia/pdaudiocf/pdaudiocf_core.c')
| -rw-r--r-- | sound/pcmcia/pdaudiocf/pdaudiocf_core.c | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_core.c b/sound/pcmcia/pdaudiocf/pdaudiocf_core.c new file mode 100644 index 000000000000..a2132e3763dd --- /dev/null +++ b/sound/pcmcia/pdaudiocf/pdaudiocf_core.c @@ -0,0 +1,291 @@ +/* + * Driver for Sound Core PDAudioCF soundcard + * + * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.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 <sound/driver.h> +#include <linux/delay.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) +{ + pdacf_t *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) +{ + pdacf_t *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(pdacf_t *chip) +{ + printk("PDAUDIOCF DUMP (0x%lx):\n", chip->port); + printk("WPD : 0x%x\n", inw(chip->port + PDAUDIOCF_REG_WDP)); + printk("RDP : 0x%x\n", inw(chip->port + PDAUDIOCF_REG_RDP)); + printk("TCR : 0x%x\n", inw(chip->port + PDAUDIOCF_REG_TCR)); + printk("SCR : 0x%x\n", inw(chip->port + PDAUDIOCF_REG_SCR)); + printk("ISR : 0x%x\n", inw(chip->port + PDAUDIOCF_REG_ISR)); + printk("IER : 0x%x\n", inw(chip->port + PDAUDIOCF_REG_IER)); + printk("AK_IFR : 0x%x\n", inw(chip->port + PDAUDIOCF_REG_AK_IFR)); +} +#endif + +static int pdacf_reset(pdacf_t *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(pdacf_t *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(snd_info_entry_t * entry, + snd_info_buffer_t * buffer) +{ + pdacf_t *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(pdacf_t *chip) +{ + snd_info_entry_t *entry; + + if (! snd_card_proc_new(chip->card, "pdaudiocf", &entry)) + snd_info_set_text_ops(entry, chip, 1024, pdacf_proc_read); +} + +pdacf_t *snd_pdacf_create(snd_card_t *card) +{ + pdacf_t *chip; + + chip = kcalloc(1, sizeof(*chip), GFP_KERNEL); + if (chip == NULL) + return NULL; + chip->card = card; + spin_lock_init(&chip->reg_lock); + spin_lock_init(&chip->ak4117_lock); + tasklet_init(&chip->tq, pdacf_tasklet, (unsigned long)chip); + card->private_data = chip; + + pdacf_proc_init(chip); + return chip; +} + +static void snd_pdacf_ak4117_change(ak4117_t *ak4117, unsigned char c0, unsigned char c1) +{ + pdacf_t *chip = ak4117->change_callback_private; + unsigned long flags; + u16 val; + + if (!(c0 & AK4117_UNLCK)) + return; + spin_lock_irqsave(&chip->reg_lock, flags); + 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); + spin_unlock_irqrestore(&chip->reg_lock, flags); +} + +int snd_pdacf_ak4117_create(pdacf_t *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(pdacf_t *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(snd_card_t *card, pm_message_t state) +{ + pdacf_t *chip = card->pm_private_data; + u16 val; + + 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(pdacf_t *chip) +{ + return (chip->ak4117->rcs0 & AK4117_UNLCK) == 0; +} + +int snd_pdacf_resume(snd_card_t *card) +{ + pdacf_t *chip = card->pm_private_data; + 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; + return 0; +} +#endif |