diff options
Diffstat (limited to 'sound/isa/ad1848/ad1848_lib.c')
-rw-r--r-- | sound/isa/ad1848/ad1848_lib.c | 487 |
1 files changed, 0 insertions, 487 deletions
diff --git a/sound/isa/ad1848/ad1848_lib.c b/sound/isa/ad1848/ad1848_lib.c index aa803d38a8ad..e69de29bb2d1 100644 --- a/sound/isa/ad1848/ad1848_lib.c +++ b/sound/isa/ad1848/ad1848_lib.c @@ -1,487 +0,0 @@ -/* - * Copyright (c) by Jaroslav Kysela <perex@perex.cz> - * Routines for control of AD1848/AD1847/CS4248 - * - * - * 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 - * - */ - -#define SNDRV_MAIN_OBJECT_FILE -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/slab.h> -#include <linux/ioport.h> -#include <sound/core.h> -#include <sound/ad1848.h> -#include <sound/control.h> -#include <sound/tlv.h> -#include <sound/pcm_params.h> - -#include <asm/io.h> -#include <asm/dma.h> - -MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); -MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248"); -MODULE_LICENSE("GPL"); - -#if 0 -#define SNDRV_DEBUG_MCE -#endif - -/* - * Some variables - */ - -static unsigned char snd_ad1848_original_image[16] = -{ - 0x00, /* 00 - lic */ - 0x00, /* 01 - ric */ - 0x9f, /* 02 - la1ic */ - 0x9f, /* 03 - ra1ic */ - 0x9f, /* 04 - la2ic */ - 0x9f, /* 05 - ra2ic */ - 0xbf, /* 06 - loc */ - 0xbf, /* 07 - roc */ - 0x20, /* 08 - dfr */ - AD1848_AUTOCALIB, /* 09 - ic */ - 0x00, /* 0a - pc */ - 0x00, /* 0b - ti */ - 0x00, /* 0c - mi */ - 0x00, /* 0d - lbc */ - 0x00, /* 0e - dru */ - 0x00, /* 0f - drl */ -}; - -/* - * Basic I/O functions - */ - -static void snd_ad1848_wait(struct snd_wss *chip) -{ - int timeout; - - for (timeout = 250; timeout > 0; timeout--) { - if ((inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT) == 0) - break; - udelay(100); - } -} - -void snd_ad1848_out(struct snd_wss *chip, - unsigned char reg, - unsigned char value) -{ - snd_ad1848_wait(chip); -#ifdef CONFIG_SND_DEBUG - if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT) - snd_printk(KERN_WARNING "auto calibration time out - " - "reg = 0x%x, value = 0x%x\n", reg, value); -#endif - outb(chip->mce_bit | reg, chip->port + CS4231P(REGSEL)); - outb(chip->image[reg] = value, chip->port + CS4231P(REG)); - mb(); - snd_printdd("codec out - reg 0x%x = 0x%x\n", - chip->mce_bit | reg, value); -} - -EXPORT_SYMBOL(snd_ad1848_out); - -static unsigned char snd_ad1848_in(struct snd_wss *chip, unsigned char reg) -{ - snd_ad1848_wait(chip); -#ifdef CONFIG_SND_DEBUG - if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT) - snd_printk(KERN_WARNING "auto calibration time out - " - "reg = 0x%x\n", reg); -#endif - outb(chip->mce_bit | reg, chip->port + CS4231P(REGSEL)); - mb(); - return inb(chip->port + CS4231P(REG)); -} - -#if 0 - -static void snd_ad1848_debug(struct snd_wss *chip) -{ - printk(KERN_DEBUG "AD1848 REGS: INDEX = 0x%02x ", inb(chip->port + CS4231P(REGSEL))); - printk(KERN_DEBUG " STATUS = 0x%02x\n", inb(chip->port + CS4231P(STATUS))); - printk(KERN_DEBUG " 0x00: left input = 0x%02x ", snd_ad1848_in(chip, 0x00)); - printk(KERN_DEBUG " 0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08)); - printk(KERN_DEBUG " 0x01: right input = 0x%02x ", snd_ad1848_in(chip, 0x01)); - printk(KERN_DEBUG " 0x09: iface (CFIG 1) = 0x%02x\n", snd_ad1848_in(chip, 0x09)); - printk(KERN_DEBUG " 0x02: AUXA left = 0x%02x ", snd_ad1848_in(chip, 0x02)); - printk(KERN_DEBUG " 0x0a: pin control = 0x%02x\n", snd_ad1848_in(chip, 0x0a)); - printk(KERN_DEBUG " 0x03: AUXA right = 0x%02x ", snd_ad1848_in(chip, 0x03)); - printk(KERN_DEBUG " 0x0b: init & status = 0x%02x\n", snd_ad1848_in(chip, 0x0b)); - printk(KERN_DEBUG " 0x04: AUXB left = 0x%02x ", snd_ad1848_in(chip, 0x04)); - printk(KERN_DEBUG " 0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c)); - printk(KERN_DEBUG " 0x05: AUXB right = 0x%02x ", snd_ad1848_in(chip, 0x05)); - printk(KERN_DEBUG " 0x0d: loopback = 0x%02x\n", snd_ad1848_in(chip, 0x0d)); - printk(KERN_DEBUG " 0x06: left output = 0x%02x ", snd_ad1848_in(chip, 0x06)); - printk(KERN_DEBUG " 0x0e: data upr count = 0x%02x\n", snd_ad1848_in(chip, 0x0e)); - printk(KERN_DEBUG " 0x07: right output = 0x%02x ", snd_ad1848_in(chip, 0x07)); - printk(KERN_DEBUG " 0x0f: data lwr count = 0x%02x\n", snd_ad1848_in(chip, 0x0f)); -} - -#endif - -/* - * AD1848 detection / MCE routines - */ - -static void snd_ad1848_mce_up(struct snd_wss *chip) -{ - unsigned long flags; - int timeout; - - snd_ad1848_wait(chip); -#ifdef CONFIG_SND_DEBUG - if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT) - snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n"); -#endif - spin_lock_irqsave(&chip->reg_lock, flags); - chip->mce_bit |= AD1848_MCE; - timeout = inb(chip->port + CS4231P(REGSEL)); - if (timeout == 0x80) - snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port); - if (!(timeout & AD1848_MCE)) - outb(chip->mce_bit | (timeout & 0x1f), - chip->port + CS4231P(REGSEL)); - spin_unlock_irqrestore(&chip->reg_lock, flags); -} - -static void snd_ad1848_mce_down(struct snd_wss *chip) -{ - unsigned long flags, timeout; - int reg; - - spin_lock_irqsave(&chip->reg_lock, flags); - for (timeout = 5; timeout > 0; timeout--) - inb(chip->port + CS4231P(REGSEL)); - /* end of cleanup sequence */ - for (timeout = 12000; - timeout > 0 && (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT); - timeout--) - udelay(100); - - snd_printdd("(1) timeout = %ld\n", timeout); - -#ifdef CONFIG_SND_DEBUG - if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT) - snd_printk(KERN_WARNING - "mce_down [0x%lx] - auto calibration time out (0)\n", - chip->port + CS4231P(REGSEL)); -#endif - - chip->mce_bit &= ~AD1848_MCE; - reg = inb(chip->port + CS4231P(REGSEL)); - outb(chip->mce_bit | (reg & 0x1f), chip->port + CS4231P(REGSEL)); - if (reg == 0x80) - snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port); - if ((reg & AD1848_MCE) == 0) { - spin_unlock_irqrestore(&chip->reg_lock, flags); - return; - } - - /* - * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low. - * It may take up to 5 sample periods (at most 907 us @ 5.5125 kHz) for - * the process to _start_, so it is important to wait at least that long - * before checking. Otherwise we might think AC has finished when it - * has in fact not begun. It could take 128 (no AC) or 384 (AC) cycles - * for ACI to drop. This gives a wait of at most 70 ms with a more - * typical value of 3-9 ms. - */ - timeout = jiffies + msecs_to_jiffies(250); - do { - spin_unlock_irqrestore(&chip->reg_lock, flags); - msleep(1); - spin_lock_irqsave(&chip->reg_lock, flags); - reg = snd_ad1848_in(chip, AD1848_TEST_INIT) & - AD1848_CALIB_IN_PROGRESS; - } while (reg && time_before(jiffies, timeout)); - spin_unlock_irqrestore(&chip->reg_lock, flags); - if (reg) - snd_printk(KERN_ERR - "mce_down - auto calibration time out (2)\n"); - - snd_printdd("(4) jiffies = %lu\n", jiffies); - snd_printd("mce_down - exit = 0x%x\n", - inb(chip->port + CS4231P(REGSEL))); -} - -static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id) -{ - struct snd_wss *chip = dev_id; - - if ((chip->mode & WSS_MODE_PLAY) && chip->playback_substream) - snd_pcm_period_elapsed(chip->playback_substream); - if ((chip->mode & WSS_MODE_RECORD) && chip->capture_substream) - snd_pcm_period_elapsed(chip->capture_substream); - outb(0, chip->port + CS4231P(STATUS)); /* clear global interrupt bit */ - return IRQ_HANDLED; -} - -/* - - */ - -static void snd_ad1848_thinkpad_twiddle(struct snd_wss *chip, int on) -{ - int tmp; - - if (!chip->thinkpad_flag) return; - - outb(0x1c, AD1848_THINKPAD_CTL_PORT1); - tmp = inb(AD1848_THINKPAD_CTL_PORT2); - - if (on) - /* turn it on */ - tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT; - else - /* turn it off */ - tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT; - - outb(tmp, AD1848_THINKPAD_CTL_PORT2); - -} - -#ifdef CONFIG_PM -static void snd_ad1848_suspend(struct snd_wss *chip) -{ - snd_pcm_suspend_all(chip->pcm); - if (chip->thinkpad_flag) - snd_ad1848_thinkpad_twiddle(chip, 0); -} - -static void snd_ad1848_resume(struct snd_wss *chip) -{ - int i; - - if (chip->thinkpad_flag) - snd_ad1848_thinkpad_twiddle(chip, 1); - - /* clear any pendings IRQ */ - inb(chip->port + CS4231P(STATUS)); - outb(0, chip->port + CS4231P(STATUS)); - mb(); - - snd_ad1848_mce_down(chip); - for (i = 0; i < 16; i++) - snd_ad1848_out(chip, i, chip->image[i]); - snd_ad1848_mce_up(chip); - snd_ad1848_mce_down(chip); -} -#endif /* CONFIG_PM */ - -static int snd_ad1848_probe(struct snd_wss *chip) -{ - unsigned long flags; - int i, id, rev, ad1847; - unsigned char *ptr; - -#if 0 - snd_ad1848_debug(chip); -#endif - id = ad1847 = 0; - for (i = 0; i < 1000; i++) { - mb(); - if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT) - udelay(500); - else { - spin_lock_irqsave(&chip->reg_lock, flags); - snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00); - snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa); - snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45); - rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT); - if (rev == 0x65) { - spin_unlock_irqrestore(&chip->reg_lock, flags); - id = 1; - ad1847 = 1; - break; - } - if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) { - spin_unlock_irqrestore(&chip->reg_lock, flags); - id = 1; - break; - } - spin_unlock_irqrestore(&chip->reg_lock, flags); - } - } - if (id != 1) - return -ENODEV; /* no valid device found */ - if (chip->hardware == WSS_HW_DETECT) { - if (ad1847) { - chip->hardware = WSS_HW_AD1847; - } else { - chip->hardware = WSS_HW_AD1848; - rev = snd_ad1848_in(chip, AD1848_MISC_INFO); - if (rev & 0x80) { - chip->hardware = WSS_HW_CS4248; - } else if ((rev & 0x0f) == 0x0a) { - snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40); - for (i = 0; i < 16; ++i) { - if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) { - chip->hardware = WSS_HW_CMI8330; - break; - } - } - snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00); - } - } - } - spin_lock_irqsave(&chip->reg_lock, flags); - inb(chip->port + CS4231P(STATUS)); /* clear any pendings IRQ */ - outb(0, chip->port + CS4231P(STATUS)); - mb(); - spin_unlock_irqrestore(&chip->reg_lock, flags); - - chip->image[AD1848_MISC_INFO] = 0x00; - chip->image[AD1848_IFACE_CTRL] = - (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA; - ptr = (unsigned char *) &chip->image; - snd_ad1848_mce_down(chip); - spin_lock_irqsave(&chip->reg_lock, flags); - for (i = 0; i < 16; i++) /* ok.. fill all AD1848 registers */ - snd_ad1848_out(chip, i, *ptr++); - spin_unlock_irqrestore(&chip->reg_lock, flags); - snd_ad1848_mce_up(chip); - /* init needed for WSS pcm */ - spin_lock_irqsave(&chip->reg_lock, flags); - chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | - AD1848_PLAYBACK_PIO | - AD1848_CAPTURE_ENABLE | - AD1848_CAPTURE_PIO | - AD1848_CALIB_MODE); - chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB; - snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]); - spin_unlock_irqrestore(&chip->reg_lock, flags); - snd_ad1848_mce_down(chip); - return 0; /* all things are ok.. */ -} - -/* - - */ - -static int snd_ad1848_free(struct snd_wss *chip) -{ - release_and_free_resource(chip->res_port); - if (chip->irq >= 0) - free_irq(chip->irq, (void *) chip); - if (chip->dma1 >= 0) { - snd_dma_disable(chip->dma1); - free_dma(chip->dma1); - } - kfree(chip); - return 0; -} - -static int snd_ad1848_dev_free(struct snd_device *device) -{ - struct snd_wss *chip = device->device_data; - return snd_ad1848_free(chip); -} - -int snd_ad1848_create(struct snd_card *card, - unsigned long port, - int irq, int dma, - unsigned short hardware, - struct snd_wss **rchip) -{ - static struct snd_device_ops ops = { - .dev_free = snd_ad1848_dev_free, - }; - struct snd_wss *chip; - int err; - - *rchip = NULL; - chip = kzalloc(sizeof(*chip), GFP_KERNEL); - if (chip == NULL) - return -ENOMEM; - spin_lock_init(&chip->reg_lock); - chip->card = card; - chip->port = port; - chip->irq = -1; - chip->dma1 = -1; - chip->dma2 = -1; - chip->single_dma = 1; - chip->hardware = hardware; - memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image)); - - if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) { - snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port); - snd_ad1848_free(chip); - return -EBUSY; - } - if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) { - snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq); - snd_ad1848_free(chip); - return -EBUSY; - } - chip->irq = irq; - if (request_dma(dma, "AD1848")) { - snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma); - snd_ad1848_free(chip); - return -EBUSY; - } - chip->dma1 = dma; - chip->dma2 = dma; - - if (hardware == WSS_HW_THINKPAD) { - chip->thinkpad_flag = 1; - chip->hardware = WSS_HW_DETECT; /* reset */ - snd_ad1848_thinkpad_twiddle(chip, 1); - } - - if (snd_ad1848_probe(chip) < 0) { - snd_ad1848_free(chip); - return -ENODEV; - } - - /* Register device */ - if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { - snd_ad1848_free(chip); - return err; - } - -#ifdef CONFIG_PM - chip->suspend = snd_ad1848_suspend; - chip->resume = snd_ad1848_resume; -#endif - - *rchip = chip; - return 0; -} - -EXPORT_SYMBOL(snd_ad1848_create); - -/* - * INIT part - */ - -static int __init alsa_ad1848_init(void) -{ - return 0; -} - -static void __exit alsa_ad1848_exit(void) -{ -} - -module_init(alsa_ad1848_init) -module_exit(alsa_ad1848_exit) |