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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [sound/] [isa/] [ad1816a/] [ad1816a_lib.c] - Blame information for rev 3

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/*
    ad1816a.c - lowlevel code for Analog Devices AD1816A chip.
    Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>
 
    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 <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/core.h>
#include <sound/tlv.h>
#include <sound/ad1816a.h>
 
#include <asm/io.h>
#include <asm/dma.h>
 
static inline int snd_ad1816a_busy_wait(struct snd_ad1816a *chip)
{
        int timeout;
 
        for (timeout = 1000; timeout-- > 0; udelay(10))
                if (inb(AD1816A_REG(AD1816A_CHIP_STATUS)) & AD1816A_READY)
                        return 0;
 
        snd_printk("chip busy.\n");
        return -EBUSY;
}
 
static inline unsigned char snd_ad1816a_in(struct snd_ad1816a *chip, unsigned char reg)
{
        snd_ad1816a_busy_wait(chip);
        return inb(AD1816A_REG(reg));
}
 
static inline void snd_ad1816a_out(struct snd_ad1816a *chip, unsigned char reg,
                            unsigned char value)
{
        snd_ad1816a_busy_wait(chip);
        outb(value, AD1816A_REG(reg));
}
 
static inline void snd_ad1816a_out_mask(struct snd_ad1816a *chip, unsigned char reg,
                                 unsigned char mask, unsigned char value)
{
        snd_ad1816a_out(chip, reg,
                (value & mask) | (snd_ad1816a_in(chip, reg) & ~mask));
}
 
static unsigned short snd_ad1816a_read(struct snd_ad1816a *chip, unsigned char reg)
{
        snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
        return snd_ad1816a_in(chip, AD1816A_INDIR_DATA_LOW) |
                (snd_ad1816a_in(chip, AD1816A_INDIR_DATA_HIGH) << 8);
}
 
static void snd_ad1816a_write(struct snd_ad1816a *chip, unsigned char reg,
                              unsigned short value)
{
        snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
        snd_ad1816a_out(chip, AD1816A_INDIR_DATA_LOW, value & 0xff);
        snd_ad1816a_out(chip, AD1816A_INDIR_DATA_HIGH, (value >> 8) & 0xff);
}
 
static void snd_ad1816a_write_mask(struct snd_ad1816a *chip, unsigned char reg,
                                   unsigned short mask, unsigned short value)
{
        snd_ad1816a_write(chip, reg,
                (value & mask) | (snd_ad1816a_read(chip, reg) & ~mask));
}
 
 
static unsigned char snd_ad1816a_get_format(struct snd_ad1816a *chip,
                                            unsigned int format, int channels)
{
        unsigned char retval = AD1816A_FMT_LINEAR_8;
 
        switch (format) {
        case SNDRV_PCM_FORMAT_MU_LAW:
                retval = AD1816A_FMT_ULAW_8;
                break;
        case SNDRV_PCM_FORMAT_A_LAW:
                retval = AD1816A_FMT_ALAW_8;
                break;
        case SNDRV_PCM_FORMAT_S16_LE:
                retval = AD1816A_FMT_LINEAR_16_LIT;
                break;
        case SNDRV_PCM_FORMAT_S16_BE:
                retval = AD1816A_FMT_LINEAR_16_BIG;
        }
        return (channels > 1) ? (retval | AD1816A_FMT_STEREO) : retval;
}
 
static int snd_ad1816a_open(struct snd_ad1816a *chip, unsigned int mode)
{
        unsigned long flags;
 
        spin_lock_irqsave(&chip->lock, flags);
 
        if (chip->mode & mode) {
                spin_unlock_irqrestore(&chip->lock, flags);
                return -EAGAIN;
        }
 
        switch ((mode &= AD1816A_MODE_OPEN)) {
        case AD1816A_MODE_PLAYBACK:
                snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
                        AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
                snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                        AD1816A_PLAYBACK_IRQ_ENABLE, 0xffff);
                break;
        case AD1816A_MODE_CAPTURE:
                snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
                        AD1816A_CAPTURE_IRQ_PENDING, 0x00);
                snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                        AD1816A_CAPTURE_IRQ_ENABLE, 0xffff);
                break;
        case AD1816A_MODE_TIMER:
                snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
                        AD1816A_TIMER_IRQ_PENDING, 0x00);
                snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                        AD1816A_TIMER_IRQ_ENABLE, 0xffff);
        }
        chip->mode |= mode;
 
        spin_unlock_irqrestore(&chip->lock, flags);
        return 0;
}
 
static void snd_ad1816a_close(struct snd_ad1816a *chip, unsigned int mode)
{
        unsigned long flags;
 
        spin_lock_irqsave(&chip->lock, flags);
 
        switch ((mode &= AD1816A_MODE_OPEN)) {
        case AD1816A_MODE_PLAYBACK:
                snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
                        AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
                snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                        AD1816A_PLAYBACK_IRQ_ENABLE, 0x0000);
                break;
        case AD1816A_MODE_CAPTURE:
                snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
                        AD1816A_CAPTURE_IRQ_PENDING, 0x00);
                snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                        AD1816A_CAPTURE_IRQ_ENABLE, 0x0000);
                break;
        case AD1816A_MODE_TIMER:
                snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
                        AD1816A_TIMER_IRQ_PENDING, 0x00);
                snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                        AD1816A_TIMER_IRQ_ENABLE, 0x0000);
        }
        if (!((chip->mode &= ~mode) & AD1816A_MODE_OPEN))
                chip->mode = 0;
 
        spin_unlock_irqrestore(&chip->lock, flags);
}
 
 
static int snd_ad1816a_trigger(struct snd_ad1816a *chip, unsigned char what,
                               int channel, int cmd, int iscapture)
{
        int error = 0;
 
        switch (cmd) {
        case SNDRV_PCM_TRIGGER_START:
        case SNDRV_PCM_TRIGGER_STOP:
                spin_lock(&chip->lock);
                cmd = (cmd == SNDRV_PCM_TRIGGER_START) ? 0xff: 0x00;
                /* if (what & AD1816A_PLAYBACK_ENABLE) */
                /* That is not valid, because playback and capture enable
                 * are the same bit pattern, just to different addresses
                 */
                if (! iscapture)
                        snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
                                AD1816A_PLAYBACK_ENABLE, cmd);
                else
                        snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
                                AD1816A_CAPTURE_ENABLE, cmd);
                spin_unlock(&chip->lock);
                break;
        default:
                snd_printk("invalid trigger mode 0x%x.\n", what);
                error = -EINVAL;
        }
 
        return error;
}
 
static int snd_ad1816a_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        return snd_ad1816a_trigger(chip, AD1816A_PLAYBACK_ENABLE,
                                   SNDRV_PCM_STREAM_PLAYBACK, cmd, 0);
}
 
static int snd_ad1816a_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        return snd_ad1816a_trigger(chip, AD1816A_CAPTURE_ENABLE,
                                   SNDRV_PCM_STREAM_CAPTURE, cmd, 1);
}
 
static int snd_ad1816a_hw_params(struct snd_pcm_substream *substream,
                                 struct snd_pcm_hw_params *hw_params)
{
        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}
 
static int snd_ad1816a_hw_free(struct snd_pcm_substream *substream)
{
        return snd_pcm_lib_free_pages(substream);
}
 
static int snd_ad1816a_playback_prepare(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        unsigned long flags;
        struct snd_pcm_runtime *runtime = substream->runtime;
        unsigned int size, rate;
 
        spin_lock_irqsave(&chip->lock, flags);
 
        chip->p_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
        snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
                AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
 
        snd_dma_program(chip->dma1, runtime->dma_addr, size,
                        DMA_MODE_WRITE | DMA_AUTOINIT);
 
        rate = runtime->rate;
        if (chip->clock_freq)
                rate = (rate * 33000) / chip->clock_freq;
        snd_ad1816a_write(chip, AD1816A_PLAYBACK_SAMPLE_RATE, rate);
        snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
                AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
                snd_ad1816a_get_format(chip, runtime->format,
                        runtime->channels));
 
        snd_ad1816a_write(chip, AD1816A_PLAYBACK_BASE_COUNT,
                snd_pcm_lib_period_bytes(substream) / 4 - 1);
 
        spin_unlock_irqrestore(&chip->lock, flags);
        return 0;
}
 
static int snd_ad1816a_capture_prepare(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        unsigned long flags;
        struct snd_pcm_runtime *runtime = substream->runtime;
        unsigned int size, rate;
 
        spin_lock_irqsave(&chip->lock, flags);
 
        chip->c_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
        snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
                AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
 
        snd_dma_program(chip->dma2, runtime->dma_addr, size,
                        DMA_MODE_READ | DMA_AUTOINIT);
 
        rate = runtime->rate;
        if (chip->clock_freq)
                rate = (rate * 33000) / chip->clock_freq;
        snd_ad1816a_write(chip, AD1816A_CAPTURE_SAMPLE_RATE, rate);
        snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
                AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
                snd_ad1816a_get_format(chip, runtime->format,
                        runtime->channels));
 
        snd_ad1816a_write(chip, AD1816A_CAPTURE_BASE_COUNT,
                snd_pcm_lib_period_bytes(substream) / 4 - 1);
 
        spin_unlock_irqrestore(&chip->lock, flags);
        return 0;
}
 
 
static snd_pcm_uframes_t snd_ad1816a_playback_pointer(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        size_t ptr;
        if (!(chip->mode & AD1816A_MODE_PLAYBACK))
                return 0;
        ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
        return bytes_to_frames(substream->runtime, ptr);
}
 
static snd_pcm_uframes_t snd_ad1816a_capture_pointer(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        size_t ptr;
        if (!(chip->mode & AD1816A_MODE_CAPTURE))
                return 0;
        ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
        return bytes_to_frames(substream->runtime, ptr);
}
 
 
static irqreturn_t snd_ad1816a_interrupt(int irq, void *dev_id)
{
        struct snd_ad1816a *chip = dev_id;
        unsigned char status;
 
        spin_lock(&chip->lock);
        status = snd_ad1816a_in(chip, AD1816A_INTERRUPT_STATUS);
        spin_unlock(&chip->lock);
 
        if ((status & AD1816A_PLAYBACK_IRQ_PENDING) && chip->playback_substream)
                snd_pcm_period_elapsed(chip->playback_substream);
 
        if ((status & AD1816A_CAPTURE_IRQ_PENDING) && chip->capture_substream)
                snd_pcm_period_elapsed(chip->capture_substream);
 
        if ((status & AD1816A_TIMER_IRQ_PENDING) && chip->timer)
                snd_timer_interrupt(chip->timer, chip->timer->sticks);
 
        spin_lock(&chip->lock);
        snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
        spin_unlock(&chip->lock);
        return IRQ_HANDLED;
}
 
 
static struct snd_pcm_hardware snd_ad1816a_playback = {
        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                                 SNDRV_PCM_INFO_MMAP_VALID),
        .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
                                 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
                                 SNDRV_PCM_FMTBIT_S16_BE),
        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
        .rate_min =             4000,
        .rate_max =             55200,
        .channels_min =         1,
        .channels_max =         2,
        .buffer_bytes_max =     (128*1024),
        .period_bytes_min =     64,
        .period_bytes_max =     (128*1024),
        .periods_min =          1,
        .periods_max =          1024,
        .fifo_size =            0,
};
 
static struct snd_pcm_hardware snd_ad1816a_capture = {
        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                                 SNDRV_PCM_INFO_MMAP_VALID),
        .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
                                 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
                                 SNDRV_PCM_FMTBIT_S16_BE),
        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
        .rate_min =             4000,
        .rate_max =             55200,
        .channels_min =         1,
        .channels_max =         2,
        .buffer_bytes_max =     (128*1024),
        .period_bytes_min =     64,
        .period_bytes_max =     (128*1024),
        .periods_min =          1,
        .periods_max =          1024,
        .fifo_size =            0,
};
 
#if 0 /* not used now */
static int snd_ad1816a_timer_close(struct snd_timer *timer)
{
        struct snd_ad1816a *chip = snd_timer_chip(timer);
        snd_ad1816a_close(chip, AD1816A_MODE_TIMER);
        return 0;
}
 
static int snd_ad1816a_timer_open(struct snd_timer *timer)
{
        struct snd_ad1816a *chip = snd_timer_chip(timer);
        snd_ad1816a_open(chip, AD1816A_MODE_TIMER);
        return 0;
}
 
static unsigned long snd_ad1816a_timer_resolution(struct snd_timer *timer)
{
        snd_assert(timer != NULL, return 0);
 
        return 10000;
}
 
static int snd_ad1816a_timer_start(struct snd_timer *timer)
{
        unsigned short bits;
        unsigned long flags;
        struct snd_ad1816a *chip = snd_timer_chip(timer);
        spin_lock_irqsave(&chip->lock, flags);
        bits = snd_ad1816a_read(chip, AD1816A_INTERRUPT_ENABLE);
 
        if (!(bits & AD1816A_TIMER_ENABLE)) {
                snd_ad1816a_write(chip, AD1816A_TIMER_BASE_COUNT,
                        timer->sticks & 0xffff);
 
                snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                        AD1816A_TIMER_ENABLE, 0xffff);
        }
        spin_unlock_irqrestore(&chip->lock, flags);
        return 0;
}
 
static int snd_ad1816a_timer_stop(struct snd_timer *timer)
{
        unsigned long flags;
        struct snd_ad1816a *chip = snd_timer_chip(timer);
        spin_lock_irqsave(&chip->lock, flags);
 
        snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
                AD1816A_TIMER_ENABLE, 0x0000);
 
        spin_unlock_irqrestore(&chip->lock, flags);
        return 0;
}
 
static struct snd_timer_hardware snd_ad1816a_timer_table = {
        .flags =        SNDRV_TIMER_HW_AUTO,
        .resolution =   10000,
        .ticks =        65535,
        .open =         snd_ad1816a_timer_open,
        .close =        snd_ad1816a_timer_close,
        .c_resolution = snd_ad1816a_timer_resolution,
        .start =        snd_ad1816a_timer_start,
        .stop =         snd_ad1816a_timer_stop,
};
#endif /* not used now */
 
 
static int snd_ad1816a_playback_open(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
        int error;
 
        if ((error = snd_ad1816a_open(chip, AD1816A_MODE_PLAYBACK)) < 0)
                return error;
        runtime->hw = snd_ad1816a_playback;
        snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
        snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
        chip->playback_substream = substream;
        return 0;
}
 
static int snd_ad1816a_capture_open(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
        int error;
 
        if ((error = snd_ad1816a_open(chip, AD1816A_MODE_CAPTURE)) < 0)
                return error;
        runtime->hw = snd_ad1816a_capture;
        snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
        snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
        chip->capture_substream = substream;
        return 0;
}
 
static int snd_ad1816a_playback_close(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
 
        chip->playback_substream = NULL;
        snd_ad1816a_close(chip, AD1816A_MODE_PLAYBACK);
        return 0;
}
 
static int snd_ad1816a_capture_close(struct snd_pcm_substream *substream)
{
        struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
 
        chip->capture_substream = NULL;
        snd_ad1816a_close(chip, AD1816A_MODE_CAPTURE);
        return 0;
}
 
 
static void __devinit snd_ad1816a_init(struct snd_ad1816a *chip)
{
        unsigned long flags;
 
        spin_lock_irqsave(&chip->lock, flags);
 
        snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
        snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
                AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
        snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
                AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
        snd_ad1816a_write(chip, AD1816A_INTERRUPT_ENABLE, 0x0000);
        snd_ad1816a_write_mask(chip, AD1816A_CHIP_CONFIG,
                AD1816A_CAPTURE_NOT_EQUAL | AD1816A_WSS_ENABLE, 0xffff);
        snd_ad1816a_write(chip, AD1816A_DSP_CONFIG, 0x0000);
        snd_ad1816a_write(chip, AD1816A_POWERDOWN_CTRL, 0x0000);
 
        spin_unlock_irqrestore(&chip->lock, flags);
}
 
static int __devinit snd_ad1816a_probe(struct snd_ad1816a *chip)
{
        unsigned long flags;
 
        spin_lock_irqsave(&chip->lock, flags);
 
        switch (chip->version = snd_ad1816a_read(chip, AD1816A_VERSION_ID)) {
        case 0:
                chip->hardware = AD1816A_HW_AD1815;
                break;
        case 1:
                chip->hardware = AD1816A_HW_AD18MAX10;
                break;
        case 3:
                chip->hardware = AD1816A_HW_AD1816A;
                break;
        default:
                chip->hardware = AD1816A_HW_AUTO;
        }
 
        spin_unlock_irqrestore(&chip->lock, flags);
        return 0;
}
 
static int snd_ad1816a_free(struct snd_ad1816a *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);
        }
        if (chip->dma2 >= 0) {
                snd_dma_disable(chip->dma2);
                free_dma(chip->dma2);
        }
        kfree(chip);
        return 0;
}
 
static int snd_ad1816a_dev_free(struct snd_device *device)
{
        struct snd_ad1816a *chip = device->device_data;
        return snd_ad1816a_free(chip);
}
 
static const char __devinit *snd_ad1816a_chip_id(struct snd_ad1816a *chip)
{
        switch (chip->hardware) {
        case AD1816A_HW_AD1816A: return "AD1816A";
        case AD1816A_HW_AD1815: return "AD1815";
        case AD1816A_HW_AD18MAX10: return "AD18max10";
        default:
                snd_printk("Unknown chip version %d:%d.\n",
                        chip->version, chip->hardware);
                return "AD1816A - unknown";
        }
}
 
int __devinit snd_ad1816a_create(struct snd_card *card,
                                 unsigned long port, int irq, int dma1, int dma2,
                                 struct snd_ad1816a **rchip)
{
        static struct snd_device_ops ops = {
                .dev_free =     snd_ad1816a_dev_free,
        };
        int error;
        struct snd_ad1816a *chip;
 
        *rchip = NULL;
 
        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
        if (chip == NULL)
                return -ENOMEM;
        chip->irq = -1;
        chip->dma1 = -1;
        chip->dma2 = -1;
 
        if ((chip->res_port = request_region(port, 16, "AD1816A")) == NULL) {
                snd_printk(KERN_ERR "ad1816a: can't grab port 0x%lx\n", port);
                snd_ad1816a_free(chip);
                return -EBUSY;
        }
        if (request_irq(irq, snd_ad1816a_interrupt, IRQF_DISABLED, "AD1816A", (void *) chip)) {
                snd_printk(KERN_ERR "ad1816a: can't grab IRQ %d\n", irq);
                snd_ad1816a_free(chip);
                return -EBUSY;
        }
        chip->irq = irq;
        if (request_dma(dma1, "AD1816A - 1")) {
                snd_printk(KERN_ERR "ad1816a: can't grab DMA1 %d\n", dma1);
                snd_ad1816a_free(chip);
                return -EBUSY;
        }
        chip->dma1 = dma1;
        if (request_dma(dma2, "AD1816A - 2")) {
                snd_printk(KERN_ERR "ad1816a: can't grab DMA2 %d\n", dma2);
                snd_ad1816a_free(chip);
                return -EBUSY;
        }
        chip->dma2 = dma2;
 
        chip->card = card;
        chip->port = port;
        spin_lock_init(&chip->lock);
 
        if ((error = snd_ad1816a_probe(chip))) {
                snd_ad1816a_free(chip);
                return error;
        }
 
        snd_ad1816a_init(chip);
 
        /* Register device */
        if ((error = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
                snd_ad1816a_free(chip);
                return error;
        }
 
        *rchip = chip;
        return 0;
}
 
static struct snd_pcm_ops snd_ad1816a_playback_ops = {
        .open =         snd_ad1816a_playback_open,
        .close =        snd_ad1816a_playback_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    snd_ad1816a_hw_params,
        .hw_free =      snd_ad1816a_hw_free,
        .prepare =      snd_ad1816a_playback_prepare,
        .trigger =      snd_ad1816a_playback_trigger,
        .pointer =      snd_ad1816a_playback_pointer,
};
 
static struct snd_pcm_ops snd_ad1816a_capture_ops = {
        .open =         snd_ad1816a_capture_open,
        .close =        snd_ad1816a_capture_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    snd_ad1816a_hw_params,
        .hw_free =      snd_ad1816a_hw_free,
        .prepare =      snd_ad1816a_capture_prepare,
        .trigger =      snd_ad1816a_capture_trigger,
        .pointer =      snd_ad1816a_capture_pointer,
};
 
int __devinit snd_ad1816a_pcm(struct snd_ad1816a *chip, int device, struct snd_pcm **rpcm)
{
        int error;
        struct snd_pcm *pcm;
 
        if ((error = snd_pcm_new(chip->card, "AD1816A", device, 1, 1, &pcm)))
                return error;
 
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1816a_playback_ops);
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1816a_capture_ops);
 
        pcm->private_data = chip;
        pcm->info_flags = (chip->dma1 == chip->dma2 ) ? SNDRV_PCM_INFO_JOINT_DUPLEX : 0;
 
        strcpy(pcm->name, snd_ad1816a_chip_id(chip));
        snd_ad1816a_init(chip);
 
        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                                              snd_dma_isa_data(),
                                              64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
 
        chip->pcm = pcm;
        if (rpcm)
                *rpcm = pcm;
        return 0;
}
 
#if 0 /* not used now */
int __devinit snd_ad1816a_timer(struct snd_ad1816a *chip, int device, struct snd_timer **rtimer)
{
        struct snd_timer *timer;
        struct snd_timer_id tid;
        int error;
 
        tid.dev_class = SNDRV_TIMER_CLASS_CARD;
        tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
        tid.card = chip->card->number;
        tid.device = device;
        tid.subdevice = 0;
        if ((error = snd_timer_new(chip->card, "AD1816A", &tid, &timer)) < 0)
                return error;
        strcpy(timer->name, snd_ad1816a_chip_id(chip));
        timer->private_data = chip;
        chip->timer = timer;
        timer->hw = snd_ad1816a_timer_table;
        if (rtimer)
                *rtimer = timer;
        return 0;
}
#endif /* not used now */
 
/*
 *
 */
 
static int snd_ad1816a_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
        static char *texts[8] = {
                "Line", "Mix", "CD", "Synth", "Video",
                "Mic", "Phone",
        };
 
        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
        uinfo->count = 2;
        uinfo->value.enumerated.items = 7;
        if (uinfo->value.enumerated.item > 6)
                uinfo->value.enumerated.item = 6;
        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
        return 0;
}
 
static int snd_ad1816a_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
        struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
        unsigned long flags;
        unsigned short val;
 
        spin_lock_irqsave(&chip->lock, flags);
        val = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL);
        spin_unlock_irqrestore(&chip->lock, flags);
        ucontrol->value.enumerated.item[0] = (val >> 12) & 7;
        ucontrol->value.enumerated.item[1] = (val >> 4) & 7;
        return 0;
}
 
static int snd_ad1816a_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
        struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
        unsigned long flags;
        unsigned short val;
        int change;
 
        if (ucontrol->value.enumerated.item[0] > 6 ||
            ucontrol->value.enumerated.item[1] > 6)
                return -EINVAL;
        val = (ucontrol->value.enumerated.item[0] << 12) |
              (ucontrol->value.enumerated.item[1] << 4);
        spin_lock_irqsave(&chip->lock, flags);
        change = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL) != val;
        snd_ad1816a_write(chip, AD1816A_ADC_SOURCE_SEL, val);
        spin_unlock_irqrestore(&chip->lock, flags);
        return change;
}
 
#define AD1816A_SINGLE_TLV(xname, reg, shift, mask, invert, xtlv)       \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
  .name = xname, .info = snd_ad1816a_info_single, \
  .get = snd_ad1816a_get_single, .put = snd_ad1816a_put_single, \
  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
  .tlv = { .p = (xtlv) } }
#define AD1816A_SINGLE(xname, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_single, \
  .get = snd_ad1816a_get_single, .put = snd_ad1816a_put_single, \
  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
 
static int snd_ad1816a_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
        int mask = (kcontrol->private_value >> 16) & 0xff;
 
        uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 1;
        uinfo->value.integer.min = 0;
        uinfo->value.integer.max = mask;
        return 0;
}
 
static int snd_ad1816a_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
        struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
        unsigned long flags;
        int reg = kcontrol->private_value & 0xff;
        int shift = (kcontrol->private_value >> 8) & 0xff;
        int mask = (kcontrol->private_value >> 16) & 0xff;
        int invert = (kcontrol->private_value >> 24) & 0xff;
 
        spin_lock_irqsave(&chip->lock, flags);
        ucontrol->value.integer.value[0] = (snd_ad1816a_read(chip, reg) >> shift) & mask;
        spin_unlock_irqrestore(&chip->lock, flags);
        if (invert)
                ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
        return 0;
}
 
static int snd_ad1816a_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
        struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
        unsigned long flags;
        int reg = kcontrol->private_value & 0xff;
        int shift = (kcontrol->private_value >> 8) & 0xff;
        int mask = (kcontrol->private_value >> 16) & 0xff;
        int invert = (kcontrol->private_value >> 24) & 0xff;
        int change;
        unsigned short old_val, val;
 
        val = (ucontrol->value.integer.value[0] & mask);
        if (invert)
                val = mask - val;
        val <<= shift;
        spin_lock_irqsave(&chip->lock, flags);
        old_val = snd_ad1816a_read(chip, reg);
        val = (old_val & ~(mask << shift)) | val;
        change = val != old_val;
        snd_ad1816a_write(chip, reg, val);
        spin_unlock_irqrestore(&chip->lock, flags);
        return change;
}
 
#define AD1816A_DOUBLE_TLV(xname, reg, shift_left, shift_right, mask, invert, xtlv) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
  .name = xname, .info = snd_ad1816a_info_double,               \
  .get = snd_ad1816a_get_double, .put = snd_ad1816a_put_double, \
  .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24), \
  .tlv = { .p = (xtlv) } }
 
#define AD1816A_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_double, \
  .get = snd_ad1816a_get_double, .put = snd_ad1816a_put_double, \
  .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
 
static int snd_ad1816a_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
        int mask = (kcontrol->private_value >> 16) & 0xff;
 
        uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 2;
        uinfo->value.integer.min = 0;
        uinfo->value.integer.max = mask;
        return 0;
}
 
static int snd_ad1816a_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
        struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
        unsigned long flags;
        int reg = kcontrol->private_value & 0xff;
        int shift_left = (kcontrol->private_value >> 8) & 0x0f;
        int shift_right = (kcontrol->private_value >> 12) & 0x0f;
        int mask = (kcontrol->private_value >> 16) & 0xff;
        int invert = (kcontrol->private_value >> 24) & 0xff;
        unsigned short val;
 
        spin_lock_irqsave(&chip->lock, flags);
        val = snd_ad1816a_read(chip, reg);
        ucontrol->value.integer.value[0] = (val >> shift_left) & mask;
        ucontrol->value.integer.value[1] = (val >> shift_right) & mask;
        spin_unlock_irqrestore(&chip->lock, flags);
        if (invert) {
                ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
                ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
        }
        return 0;
}
 
static int snd_ad1816a_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
        struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
        unsigned long flags;
        int reg = kcontrol->private_value & 0xff;
        int shift_left = (kcontrol->private_value >> 8) & 0x0f;
        int shift_right = (kcontrol->private_value >> 12) & 0x0f;
        int mask = (kcontrol->private_value >> 16) & 0xff;
        int invert = (kcontrol->private_value >> 24) & 0xff;
        int change;
        unsigned short old_val, val1, val2;
 
        val1 = ucontrol->value.integer.value[0] & mask;
        val2 = ucontrol->value.integer.value[1] & mask;
        if (invert) {
                val1 = mask - val1;
                val2 = mask - val2;
        }
        val1 <<= shift_left;
        val2 <<= shift_right;
        spin_lock_irqsave(&chip->lock, flags);
        old_val = snd_ad1816a_read(chip, reg);
        val1 = (old_val & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
        change = val1 != old_val;
        snd_ad1816a_write(chip, reg, val1);
        spin_unlock_irqrestore(&chip->lock, flags);
        return change;
}
 
static const DECLARE_TLV_DB_SCALE(db_scale_4bit, -4500, 300, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_5bit, -4650, 150, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
 
static struct snd_kcontrol_new snd_ad1816a_controls[] __devinitdata = {
AD1816A_DOUBLE("Master Playback Switch", AD1816A_MASTER_ATT, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("Master Playback Volume", AD1816A_MASTER_ATT, 8, 0, 31, 1,
                   db_scale_5bit),
AD1816A_DOUBLE("PCM Playback Switch", AD1816A_VOICE_ATT, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("PCM Playback Volume", AD1816A_VOICE_ATT, 8, 0, 63, 1,
                   db_scale_6bit),
AD1816A_DOUBLE("Line Playback Switch", AD1816A_LINE_GAIN_ATT, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("Line Playback Volume", AD1816A_LINE_GAIN_ATT, 8, 0, 31, 1,
                   db_scale_5bit_12db_max),
AD1816A_DOUBLE("CD Playback Switch", AD1816A_CD_GAIN_ATT, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("CD Playback Volume", AD1816A_CD_GAIN_ATT, 8, 0, 31, 1,
                   db_scale_5bit_12db_max),
AD1816A_DOUBLE("Synth Playback Switch", AD1816A_SYNTH_GAIN_ATT, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("Synth Playback Volume", AD1816A_SYNTH_GAIN_ATT, 8, 0, 31, 1,
                   db_scale_5bit_12db_max),
AD1816A_DOUBLE("FM Playback Switch", AD1816A_FM_ATT, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("FM Playback Volume", AD1816A_FM_ATT, 8, 0, 63, 1,
                   db_scale_6bit),
AD1816A_SINGLE("Mic Playback Switch", AD1816A_MIC_GAIN_ATT, 15, 1, 1),
AD1816A_SINGLE_TLV("Mic Playback Volume", AD1816A_MIC_GAIN_ATT, 8, 31, 1,
                   db_scale_5bit_12db_max),
AD1816A_SINGLE("Mic Boost", AD1816A_MIC_GAIN_ATT, 14, 1, 0),
AD1816A_DOUBLE("Video Playback Switch", AD1816A_VID_GAIN_ATT, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("Video Playback Volume", AD1816A_VID_GAIN_ATT, 8, 0, 31, 1,
                   db_scale_5bit_12db_max),
AD1816A_SINGLE("Phone Capture Switch", AD1816A_PHONE_IN_GAIN_ATT, 15, 1, 1),
AD1816A_SINGLE_TLV("Phone Capture Volume", AD1816A_PHONE_IN_GAIN_ATT, 0, 15, 1,
                   db_scale_4bit),
AD1816A_SINGLE("Phone Playback Switch", AD1816A_PHONE_OUT_ATT, 7, 1, 1),
AD1816A_SINGLE_TLV("Phone Playback Volume", AD1816A_PHONE_OUT_ATT, 0, 31, 1,
                   db_scale_5bit),
{
        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
        .name = "Capture Source",
        .info = snd_ad1816a_info_mux,
        .get = snd_ad1816a_get_mux,
        .put = snd_ad1816a_put_mux,
},
AD1816A_DOUBLE("Capture Switch", AD1816A_ADC_PGA, 15, 7, 1, 1),
AD1816A_DOUBLE_TLV("Capture Volume", AD1816A_ADC_PGA, 8, 0, 15, 0,
                   db_scale_rec_gain),
AD1816A_SINGLE("3D Control - Switch", AD1816A_3D_PHAT_CTRL, 15, 1, 1),
AD1816A_SINGLE("3D Control - Level", AD1816A_3D_PHAT_CTRL, 0, 15, 0),
};
 
int __devinit snd_ad1816a_mixer(struct snd_ad1816a *chip)
{
        struct snd_card *card;
        unsigned int idx;
        int err;
 
        snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
 
        card = chip->card;
 
        strcpy(card->mixername, snd_ad1816a_chip_id(chip));
 
        for (idx = 0; idx < ARRAY_SIZE(snd_ad1816a_controls); idx++) {
                if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ad1816a_controls[idx], chip))) < 0)
                        return err;
        }
        return 0;
}
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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [sound/] [isa/] [ad1816a/] [ad1816a_lib.c] - Blame information for rev 3

Line No.	Rev	Author	Line
1	3	xianfeng	`/*`
2			`ad1816a.c - lowlevel code for Analog Devices AD1816A chip.`
3			`Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>`
4
5			`This program is free software; you can redistribute it and/or modify`
6			`it under the terms of the GNU General Public License as published by`
7			`the Free Software Foundation; either version 2 of the License, or`
8			`(at your option) any later version.`
9
10			`This program is distributed in the hope that it will be useful,`
11			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
12			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
13			`GNU General Public License for more details.`
14
15			`You should have received a copy of the GNU General Public License`
16			`along with this program; if not, write to the Free Software`
17			`Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA`
18			`*/`
19
20			`#include <sound/driver.h>`
21			`#include <linux/delay.h>`
22			`#include <linux/init.h>`
23			`#include <linux/interrupt.h>`
24			`#include <linux/slab.h>`
25			`#include <linux/ioport.h>`
26			`#include <sound/core.h>`
27			`#include <sound/tlv.h>`
28			`#include <sound/ad1816a.h>`
29
30			`#include <asm/io.h>`
31			`#include <asm/dma.h>`
32
33			`static inline int snd_ad1816a_busy_wait(struct snd_ad1816a *chip)`
34			`{`
35			`int timeout;`
36
37			`for (timeout = 1000; timeout-- > 0; udelay(10))`
38			`if (inb(AD1816A_REG(AD1816A_CHIP_STATUS)) & AD1816A_READY)`
39			`return 0;`
40