Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1062 insertions, 0 deletions

diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
new file mode 100644
index 000000000000..17f68d07d9b2
--- /dev/null
+++ b/sound/isa/es1688/es1688_lib.c
@@ -0,0 +1,1062 @@
+/*
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *  Routines for control of ESS ES1688/688/488 chip
+ *
+ *
+ *   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/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <sound/core.h>
+#include <sound/es1688.h>
+#include <sound/initval.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("ESS ESx688 lowlevel module");
+MODULE_LICENSE("GPL");
+
+static int snd_es1688_dsp_command(es1688_t *chip, unsigned char val)
+{
+        int i;
+
+        for (i = 10000; i; i--)
+                if ((inb(ES1688P(chip, STATUS)) & 0x80) == 0) {
+                        outb(val, ES1688P(chip, COMMAND));
+                        return 1;
+                }
+#ifdef CONFIG_SND_DEBUG
+        printk("snd_es1688_dsp_command: timeout (0x%x)\n", val);
+#endif
+        return 0;
+}
+
+static int snd_es1688_dsp_get_byte(es1688_t *chip)
+{
+        int i;
+
+        for (i = 1000; i; i--)
+                if (inb(ES1688P(chip, DATA_AVAIL)) & 0x80)
+                        return inb(ES1688P(chip, READ));
+        snd_printd("es1688 get byte failed: 0x%lx = 0x%x!!!\n", ES1688P(chip, DATA_AVAIL), inb(ES1688P(chip, DATA_AVAIL)));
+        return -ENODEV;
+}
+
+static int snd_es1688_write(es1688_t *chip,
+                            unsigned char reg, unsigned char data)
+{
+        if (!snd_es1688_dsp_command(chip, reg))
+                return 0;
+        return snd_es1688_dsp_command(chip, data);
+}
+
+static int snd_es1688_read(es1688_t *chip, unsigned char reg)
+{
+        /* Read a byte from an extended mode register of ES1688 */
+        if (!snd_es1688_dsp_command(chip, 0xc0))
+                return -1;
+        if (!snd_es1688_dsp_command(chip, reg))
+                return -1;
+        return snd_es1688_dsp_get_byte(chip);
+}
+
+void snd_es1688_mixer_write(es1688_t *chip,
+                            unsigned char reg, unsigned char data)
+{
+        outb(reg, ES1688P(chip, MIXER_ADDR));
+        udelay(10);
+        outb(data, ES1688P(chip, MIXER_DATA));
+        udelay(10);
+}
+
+static unsigned char snd_es1688_mixer_read(es1688_t *chip, unsigned char reg)
+{
+        unsigned char result;
+
+        outb(reg, ES1688P(chip, MIXER_ADDR));
+        udelay(10);
+        result = inb(ES1688P(chip, MIXER_DATA));
+        udelay(10);
+        return result;
+}
+
+static int snd_es1688_reset(es1688_t *chip)
+{
+        int i;
+
+        outb(3, ES1688P(chip, RESET));          /* valid only for ESS chips, SB -> 1 */
+        udelay(10);
+        outb(0, ES1688P(chip, RESET));
+        udelay(30);
+        for (i = 0; i < 1000 && !(inb(ES1688P(chip, DATA_AVAIL)) & 0x80); i++);
+        if (inb(ES1688P(chip, READ)) != 0xaa) {
+                snd_printd("ess_reset at 0x%lx: failed!!!\n", chip->port);
+                return -ENODEV;
+        }
+        snd_es1688_dsp_command(chip, 0xc6);     /* enable extended mode */
+        return 0;
+}
+
+static int snd_es1688_probe(es1688_t *chip)
+{
+        unsigned long flags;
+        unsigned short major, minor, hw;
+        int i;
+
+        /*
+         *  initialization sequence
+         */
+
+        spin_lock_irqsave(&chip->reg_lock, flags);      /* Some ESS1688 cards need this */
+        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
+        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
+        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
+        inb(ES1688P(chip, ENABLE2));    /* ENABLE2 */
+        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
+        inb(ES1688P(chip, ENABLE2));    /* ENABLE2 */
+        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
+        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
+        inb(ES1688P(chip, ENABLE2));    /* ENABLE2 */
+        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
+        inb(ES1688P(chip, ENABLE0));    /* ENABLE0 */
+
+        if (snd_es1688_reset(chip) < 0) {
+                snd_printdd("ESS: [0x%lx] reset failed... 0x%x\n", chip->port, inb(ES1688P(chip, READ)));
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
+                return -ENODEV;
+        }
+        snd_es1688_dsp_command(chip, 0xe7);     /* return identification */
+
+        for (i = 1000, major = minor = 0; i; i--) {
+                if (inb(ES1688P(chip, DATA_AVAIL)) & 0x80) {
+                        if (major == 0) {
+                                major = inb(ES1688P(chip, READ));
+                        } else {
+                                minor = inb(ES1688P(chip, READ));
+                        }
+                }
+        }
+
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+        snd_printdd("ESS: [0x%lx] found.. major = 0x%x, minor = 0x%x\n", chip->port, major, minor);
+
+        chip->version = (major << 8) | minor;
+        if (!chip->version)
+                return -ENODEV; /* probably SB */
+
+        hw = ES1688_HW_AUTO;
+        switch (chip->version & 0xfff0) {
+        case 0x4880:
+                snd_printk("[0x%lx] ESS: AudioDrive ES488 detected, but driver is in another place\n", chip->port);
+                return -ENODEV;
+        case 0x6880:
+                hw = (chip->version & 0x0f) >= 8 ? ES1688_HW_1688 : ES1688_HW_688;
+                break;
+        default:
+                snd_printk("[0x%lx] ESS: unknown AudioDrive chip with version 0x%x (Jazz16 soundcard?)\n", chip->port, chip->version);
+                return -ENODEV;
+        }
+
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_write(chip, 0xb1, 0x10);     /* disable IRQ */
+        snd_es1688_write(chip, 0xb2, 0x00);     /* disable DMA */
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+        /* enable joystick, but disable OPL3 */
+        spin_lock_irqsave(&chip->mixer_lock, flags);
+        snd_es1688_mixer_write(chip, 0x40, 0x01);
+        spin_unlock_irqrestore(&chip->mixer_lock, flags);
+
+        return 0;
+}
+
+static int snd_es1688_init(es1688_t * chip, int enable)
+{
+        static int irqs[16] = {-1, -1, 0, -1, -1, 1, -1, 2, -1, 0, 3, -1, -1, -1, -1, -1};
+        unsigned long flags;
+        int cfg, irq_bits, dma, dma_bits, tmp, tmp1;
+
+        /* ok.. setup MPU-401 port and joystick and OPL3 */
+        cfg = 0x01;             /* enable joystick, but disable OPL3 */
+        if (enable && chip->mpu_port >= 0x300 && chip->mpu_irq > 0 && chip->hardware != ES1688_HW_688) {
+                tmp = (chip->mpu_port & 0x0f0) >> 4;
+                if (tmp <= 3) {
+                        switch (chip->mpu_irq) {
+                        case 9:
+                                tmp1 = 4;
+                                break;
+                        case 5:
+                                tmp1 = 5;
+                                break;
+                        case 7:
+                                tmp1 = 6;
+                                break;
+                        case 10:
+                                tmp1 = 7;
+                                break;
+                        default:
+                                tmp1 = 0;
+                        }
+                        if (tmp1) {
+                                cfg |= (tmp << 3) | (tmp1 << 5);
+                        }
+                }
+        }
+#if 0
+        snd_printk("mpu cfg = 0x%x\n", cfg);
+#endif
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_mixer_write(chip, 0x40, cfg);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        /* --- */
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_read(chip, 0xb1);
+        snd_es1688_read(chip, 0xb2);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        if (enable) {
+                cfg = 0xf0;     /* enable only DMA counter interrupt */
+                irq_bits = irqs[chip->irq & 0x0f];
+                if (irq_bits < 0) {
+                        snd_printk("[0x%lx] ESS: bad IRQ %d for ES1688 chip!!\n", chip->port, chip->irq);
+#if 0
+                        irq_bits = 0;
+                        cfg = 0x10;
+#endif
+                        return -EINVAL;
+                }
+                spin_lock_irqsave(&chip->reg_lock, flags);
+                snd_es1688_write(chip, 0xb1, cfg | (irq_bits << 2));
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
+                cfg = 0xf0;     /* extended mode DMA enable */
+                dma = chip->dma8;
+                if (dma > 3 || dma == 2) {
+                        snd_printk("[0x%lx] ESS: bad DMA channel %d for ES1688 chip!!\n", chip->port, dma);
+#if 0
+                        dma_bits = 0;
+                        cfg = 0x00;     /* disable all DMA */
+#endif
+                        return -EINVAL;
+                } else {
+                        dma_bits = dma;
+                        if (dma != 3)
+                                dma_bits++;
+                }
+                spin_lock_irqsave(&chip->reg_lock, flags);
+                snd_es1688_write(chip, 0xb2, cfg | (dma_bits << 2));
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
+        } else {
+                spin_lock_irqsave(&chip->reg_lock, flags);
+                snd_es1688_write(chip, 0xb1, 0x10);     /* disable IRQ */
+                snd_es1688_write(chip, 0xb2, 0x00);     /* disable DMA */
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
+        }
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_read(chip, 0xb1);
+        snd_es1688_read(chip, 0xb2);
+        snd_es1688_reset(chip);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        return 0;
+}
+
+/*
+
+ */
+
+static ratnum_t clocks[2] = {
+        {
+                .num = 795444,
+                .den_min = 1,
+                .den_max = 128,
+                .den_step = 1,
+        },
+        {
+                .num = 397722,
+                .den_min = 1,
+                .den_max = 128,
+                .den_step = 1,
+        }
+};
+
+static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks  = {
+        .nrats = 2,
+        .rats = clocks,
+};
+
+static void snd_es1688_set_rate(es1688_t *chip, snd_pcm_substream_t *substream)
+{
+        snd_pcm_runtime_t *runtime = substream->runtime;
+        unsigned int bits, divider;
+
+        if (runtime->rate_num == clocks[0].num)
+                bits = 256 - runtime->rate_den;
+        else
+                bits = 128 - runtime->rate_den;
+        /* set filter register */
+        divider = 256 - 7160000*20/(8*82*runtime->rate);
+        /* write result to hardware */
+        snd_es1688_write(chip, 0xa1, bits);
+        snd_es1688_write(chip, 0xa2, divider);
+}
+
+static int snd_es1688_ioctl(snd_pcm_substream_t * substream,
+                            unsigned int cmd, void *arg)
+{
+        return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
+static int snd_es1688_trigger(es1688_t *chip, int cmd, unsigned char value)
+{
+        int val;
+
+        if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+                value = 0x00;
+        } else if (cmd != SNDRV_PCM_TRIGGER_START) {
+                return -EINVAL;
+        }
+        spin_lock(&chip->reg_lock);
+        chip->trigger_value = value;
+        val = snd_es1688_read(chip, 0xb8);
+        if ((val < 0) || (val & 0x0f) == value) {
+                spin_unlock(&chip->reg_lock);
+                return -EINVAL; /* something is wrong */
+        }
+#if 0
+        printk("trigger: val = 0x%x, value = 0x%x\n", val, value);
+        printk("trigger: pointer = 0x%x\n", snd_dma_pointer(chip->dma8, chip->dma_size));
+#endif
+        snd_es1688_write(chip, 0xb8, (val & 0xf0) | value);
+        spin_unlock(&chip->reg_lock);
+        return 0;
+}
+
+static int snd_es1688_hw_params(snd_pcm_substream_t * substream,
+                                snd_pcm_hw_params_t * hw_params)
+{
+        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+}
+
+static int snd_es1688_hw_free(snd_pcm_substream_t * substream)
+{
+        return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_es1688_playback_prepare(snd_pcm_substream_t * substream)
+{
+        unsigned long flags;
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        snd_pcm_runtime_t *runtime = substream->runtime;
+        unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+        unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+        chip->dma_size = size;
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_reset(chip);
+        snd_es1688_set_rate(chip, substream);
+        snd_es1688_write(chip, 0xb8, 4);        /* auto init DMA mode */
+        snd_es1688_write(chip, 0xa8, (snd_es1688_read(chip, 0xa8) & ~0x03) | (3 - runtime->channels));
+        snd_es1688_write(chip, 0xb9, 2);        /* demand mode (4 bytes/request) */
+        if (runtime->channels == 1) {
+                if (snd_pcm_format_width(runtime->format) == 8) {
+                        /* 8. bit mono */
+                        snd_es1688_write(chip, 0xb6, 0x80);
+                        snd_es1688_write(chip, 0xb7, 0x51);
+                        snd_es1688_write(chip, 0xb7, 0xd0);
+                } else {
+                        /* 16. bit mono */
+                        snd_es1688_write(chip, 0xb6, 0x00);
+                        snd_es1688_write(chip, 0xb7, 0x71);
+                        snd_es1688_write(chip, 0xb7, 0xf4);
+                }
+        } else {
+                if (snd_pcm_format_width(runtime->format) == 8) {
+                        /* 8. bit stereo */
+                        snd_es1688_write(chip, 0xb6, 0x80);
+                        snd_es1688_write(chip, 0xb7, 0x51);
+                        snd_es1688_write(chip, 0xb7, 0x98);
+                } else {
+                        /* 16. bit stereo */
+                        snd_es1688_write(chip, 0xb6, 0x00);
+                        snd_es1688_write(chip, 0xb7, 0x71);
+                        snd_es1688_write(chip, 0xb7, 0xbc);
+                }
+        }
+        snd_es1688_write(chip, 0xb1, (snd_es1688_read(chip, 0xb1) & 0x0f) | 0x50);
+        snd_es1688_write(chip, 0xb2, (snd_es1688_read(chip, 0xb2) & 0x0f) | 0x50);
+        snd_es1688_dsp_command(chip, ES1688_DSP_CMD_SPKON);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        /* --- */
+        count = -count;
+        snd_dma_program(chip->dma8, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_write(chip, 0xa4, (unsigned char) count);
+        snd_es1688_write(chip, 0xa5, (unsigned char) (count >> 8));
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        return 0;
+}
+
+static int snd_es1688_playback_trigger(snd_pcm_substream_t * substream,
+                                       int cmd)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        return snd_es1688_trigger(chip, cmd, 0x05);
+}
+
+static int snd_es1688_capture_prepare(snd_pcm_substream_t * substream)
+{
+        unsigned long flags;
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        snd_pcm_runtime_t *runtime = substream->runtime;
+        unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+        unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+        chip->dma_size = size;
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_reset(chip);
+        snd_es1688_set_rate(chip, substream);
+        snd_es1688_dsp_command(chip, ES1688_DSP_CMD_SPKOFF);
+        snd_es1688_write(chip, 0xb8, 0x0e);     /* auto init DMA mode */
+        snd_es1688_write(chip, 0xa8, (snd_es1688_read(chip, 0xa8) & ~0x03) | (3 - runtime->channels));
+        snd_es1688_write(chip, 0xb9, 2);        /* demand mode (4 bytes/request) */
+        if (runtime->channels == 1) {
+                if (snd_pcm_format_width(runtime->format) == 8) {
+                        /* 8. bit mono */
+                        snd_es1688_write(chip, 0xb7, 0x51);
+                        snd_es1688_write(chip, 0xb7, 0xd0);
+                } else {
+                        /* 16. bit mono */
+                        snd_es1688_write(chip, 0xb7, 0x71);
+                        snd_es1688_write(chip, 0xb7, 0xf4);
+                }
+        } else {
+                if (snd_pcm_format_width(runtime->format) == 8) {
+                        /* 8. bit stereo */
+                        snd_es1688_write(chip, 0xb7, 0x51);
+                        snd_es1688_write(chip, 0xb7, 0x98);
+                } else {
+                        /* 16. bit stereo */
+                        snd_es1688_write(chip, 0xb7, 0x71);
+                        snd_es1688_write(chip, 0xb7, 0xbc);
+                }
+        }
+        snd_es1688_write(chip, 0xb1, (snd_es1688_read(chip, 0xb1) & 0x0f) | 0x50);
+        snd_es1688_write(chip, 0xb2, (snd_es1688_read(chip, 0xb2) & 0x0f) | 0x50);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        /* --- */
+        count = -count;
+        snd_dma_program(chip->dma8, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        snd_es1688_write(chip, 0xa4, (unsigned char) count);
+        snd_es1688_write(chip, 0xa5, (unsigned char) (count >> 8));
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        return 0;
+}
+
+static int snd_es1688_capture_trigger(snd_pcm_substream_t * substream,
+                                      int cmd)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        return snd_es1688_trigger(chip, cmd, 0x0f);
+}
+
+static irqreturn_t snd_es1688_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        es1688_t *chip = dev_id;
+
+        if (chip->trigger_value == 0x05)        /* ok.. playback is active */
+                snd_pcm_period_elapsed(chip->playback_substream);
+        if (chip->trigger_value == 0x0f)        /* ok.. capture is active */
+                snd_pcm_period_elapsed(chip->capture_substream);
+
+        inb(ES1688P(chip, DATA_AVAIL)); /* ack interrupt */
+        return IRQ_HANDLED;
+}
+
+static snd_pcm_uframes_t snd_es1688_playback_pointer(snd_pcm_substream_t * substream)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        size_t ptr;
+        
+        if (chip->trigger_value != 0x05)
+                return 0;
+        ptr = snd_dma_pointer(chip->dma8, chip->dma_size);
+        return bytes_to_frames(substream->runtime, ptr);
+}
+
+static snd_pcm_uframes_t snd_es1688_capture_pointer(snd_pcm_substream_t * substream)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        size_t ptr;
+        
+        if (chip->trigger_value != 0x0f)
+                return 0;
+        ptr = snd_dma_pointer(chip->dma8, chip->dma_size);
+        return bytes_to_frames(substream->runtime, ptr);
+}
+
+/*
+
+ */
+
+static snd_pcm_hardware_t snd_es1688_playback =
+{
+        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+                                 SNDRV_PCM_INFO_MMAP_VALID),
+        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
+        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+        .rate_min =             4000,
+        .rate_max =             48000,
+        .channels_min =         1,
+        .channels_max =         2,
+        .buffer_bytes_max =     65536,
+        .period_bytes_min =     64,
+        .period_bytes_max =     65536,
+        .periods_min =          1,
+        .periods_max =          1024,
+        .fifo_size =            0,
+};
+
+static snd_pcm_hardware_t snd_es1688_capture =
+{
+        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+                                 SNDRV_PCM_INFO_MMAP_VALID),
+        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
+        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+        .rate_min =             4000,
+        .rate_max =             48000,
+        .channels_min =         1,
+        .channels_max =         2,
+        .buffer_bytes_max =     65536,
+        .period_bytes_min =     64,
+        .period_bytes_max =     65536,
+        .periods_min =          1,
+        .periods_max =          1024,
+        .fifo_size =            0,
+};
+
+/*
+
+ */
+
+static int snd_es1688_playback_open(snd_pcm_substream_t * substream)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        snd_pcm_runtime_t *runtime = substream->runtime;
+
+        if (chip->capture_substream != NULL)
+                return -EAGAIN;
+        chip->playback_substream = substream;
+        runtime->hw = snd_es1688_playback;
+        snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+                                      &hw_constraints_clocks);
+        return 0;
+}
+
+static int snd_es1688_capture_open(snd_pcm_substream_t * substream)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+        snd_pcm_runtime_t *runtime = substream->runtime;
+
+        if (chip->playback_substream != NULL)
+                return -EAGAIN;
+        chip->capture_substream = substream;
+        runtime->hw = snd_es1688_capture;
+        snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+                                      &hw_constraints_clocks);
+        return 0;
+}
+
+static int snd_es1688_playback_close(snd_pcm_substream_t * substream)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+
+        chip->playback_substream = NULL;
+        return 0;
+}
+
+static int snd_es1688_capture_close(snd_pcm_substream_t * substream)
+{
+        es1688_t *chip = snd_pcm_substream_chip(substream);
+
+        chip->capture_substream = NULL;
+        return 0;
+}
+
+static int snd_es1688_free(es1688_t *chip)
+{
+        if (chip->res_port) {
+                snd_es1688_init(chip, 0);
+                release_resource(chip->res_port);
+                kfree_nocheck(chip->res_port);
+        }
+        if (chip->irq >= 0)
+                free_irq(chip->irq, (void *) chip);
+        if (chip->dma8 >= 0) {
+                disable_dma(chip->dma8);
+                free_dma(chip->dma8);
+        }
+        kfree(chip);
+        return 0;
+}
+
+static int snd_es1688_dev_free(snd_device_t *device)
+{
+        es1688_t *chip = device->device_data;
+        return snd_es1688_free(chip);
+}
+
+static const char *snd_es1688_chip_id(es1688_t *chip)
+{
+        static char tmp[16];
+        sprintf(tmp, "ES%s688 rev %i", chip->hardware == ES1688_HW_688 ? "" : "1", chip->version & 0x0f);
+        return tmp;
+}
+
+int snd_es1688_create(snd_card_t * card,
+                      unsigned long port,
+                      unsigned long mpu_port,
+                      int irq,
+                      int mpu_irq,
+                      int dma8,
+                      unsigned short hardware,
+                      es1688_t **rchip)
+{
+        static snd_device_ops_t ops = {
+                .dev_free =     snd_es1688_dev_free,
+        };
+                                
+        es1688_t *chip;
+        int err;
+
+        *rchip = NULL;
+        chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+        if (chip == NULL)
+                return -ENOMEM;
+        chip->irq = -1;
+        chip->dma8 = -1;
+        
+        if ((chip->res_port = request_region(port + 4, 12, "ES1688")) == NULL) {
+                snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
+                snd_es1688_free(chip);
+                return -EBUSY;
+        }
+        if (request_irq(irq, snd_es1688_interrupt, SA_INTERRUPT, "ES1688", (void *) chip)) {
+                snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
+                snd_es1688_free(chip);
+                return -EBUSY;
+        }
+        chip->irq = irq;
+        if (request_dma(dma8, "ES1688")) {
+                snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
+                snd_es1688_free(chip);
+                return -EBUSY;
+        }
+        chip->dma8 = dma8;
+
+        spin_lock_init(&chip->reg_lock);
+        spin_lock_init(&chip->mixer_lock);
+        chip->card = card;
+        chip->port = port;
+        mpu_port &= ~0x000f;
+        if (mpu_port < 0x300 || mpu_port > 0x330)
+                mpu_port = 0;
+        chip->mpu_port = mpu_port;
+        chip->mpu_irq = mpu_irq;
+        chip->hardware = hardware;
+
+        if ((err = snd_es1688_probe(chip)) < 0) {
+                snd_es1688_free(chip);
+                return err;
+        }
+        if ((err = snd_es1688_init(chip, 1)) < 0) {
+                snd_es1688_free(chip);
+                return err;
+        }
+
+        /* Register device */
+        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+                snd_es1688_free(chip);
+                return err;
+        }
+
+        *rchip = chip;
+        return 0;
+}
+
+static snd_pcm_ops_t snd_es1688_playback_ops = {
+        .open =                 snd_es1688_playback_open,
+        .close =                snd_es1688_playback_close,
+        .ioctl =                snd_es1688_ioctl,
+        .hw_params =            snd_es1688_hw_params,
+        .hw_free =              snd_es1688_hw_free,
+        .prepare =              snd_es1688_playback_prepare,
+        .trigger =              snd_es1688_playback_trigger,
+        .pointer =              snd_es1688_playback_pointer,
+};
+
+static snd_pcm_ops_t snd_es1688_capture_ops = {
+        .open =                 snd_es1688_capture_open,
+        .close =                snd_es1688_capture_close,
+        .ioctl =                snd_es1688_ioctl,
+        .hw_params =            snd_es1688_hw_params,
+        .hw_free =              snd_es1688_hw_free,
+        .prepare =              snd_es1688_capture_prepare,
+        .trigger =              snd_es1688_capture_trigger,
+        .pointer =              snd_es1688_capture_pointer,
+};
+
+static void snd_es1688_pcm_free(snd_pcm_t *pcm)
+{
+        es1688_t *chip = pcm->private_data;
+        chip->pcm = NULL;
+        snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+int snd_es1688_pcm(es1688_t * chip, int device, snd_pcm_t ** rpcm)
+{
+        snd_pcm_t *pcm;
+        int err;
+
+        if ((err = snd_pcm_new(chip->card, "ESx688", device, 1, 1, &pcm)) < 0)
+                return err;
+
+        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1688_playback_ops);
+        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1688_capture_ops);
+
+        pcm->private_data = chip;
+        pcm->private_free = snd_es1688_pcm_free;
+        pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
+        sprintf(pcm->name, snd_es1688_chip_id(chip));
+        chip->pcm = pcm;
+
+        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+                                              snd_dma_isa_data(),
+                                              64*1024, 64*1024);
+
+        if (rpcm)
+                *rpcm = pcm;
+        return 0;
+}
+
+/*
+ *  MIXER part
+ */
+
+static int snd_es1688_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[9] = {
+                "Mic", "Mic Master", "CD", "AOUT",
+                "Mic1", "Mix", "Line", "Master"
+        };
+
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 8;
+        if (uinfo->value.enumerated.item > 7)
+                uinfo->value.enumerated.item = 7;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_es1688_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        es1688_t *chip = snd_kcontrol_chip(kcontrol);
+        ucontrol->value.enumerated.item[0] = snd_es1688_mixer_read(chip, ES1688_REC_DEV) & 7;
+        return 0;
+}
+
+static int snd_es1688_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        es1688_t *chip = snd_kcontrol_chip(kcontrol);
+        unsigned long flags;
+        unsigned char oval, nval;
+        int change;
+        
+        if (ucontrol->value.enumerated.item[0] > 8)
+                return -EINVAL;
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        oval = snd_es1688_mixer_read(chip, ES1688_REC_DEV);
+        nval = (ucontrol->value.enumerated.item[0] & 7) | (oval & ~15);
+        change = nval != oval;
+        if (change)
+                snd_es1688_mixer_write(chip, ES1688_REC_DEV, nval);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        return change;
+}
+
+#define ES1688_SINGLE(xname, xindex, reg, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_es1688_info_single, \
+  .get = snd_es1688_get_single, .put = snd_es1688_put_single, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
+
+static int snd_es1688_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * 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_es1688_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        es1688_t *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->reg_lock, flags);
+        ucontrol->value.integer.value[0] = (snd_es1688_mixer_read(chip, reg) >> shift) & mask;
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        if (invert)
+                ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
+        return 0;
+}
+
+static int snd_es1688_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        es1688_t *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 char oval, nval;
+        
+        nval = (ucontrol->value.integer.value[0] & mask);
+        if (invert)
+                nval = mask - nval;
+        nval <<= shift;
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        oval = snd_es1688_mixer_read(chip, reg);
+        nval = (oval & ~(mask << shift)) | nval;
+        change = nval != oval;
+        if (change)
+                snd_es1688_mixer_write(chip, reg, nval);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        return change;
+}
+
+#define ES1688_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_es1688_info_double, \
+  .get = snd_es1688_get_double, .put = snd_es1688_put_double, \
+  .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
+
+static int snd_es1688_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        int mask = (kcontrol->private_value >> 24) & 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_es1688_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        es1688_t *chip = snd_kcontrol_chip(kcontrol);
+        unsigned long flags;
+        int left_reg = kcontrol->private_value & 0xff;
+        int right_reg = (kcontrol->private_value >> 8) & 0xff;
+        int shift_left = (kcontrol->private_value >> 16) & 0x07;
+        int shift_right = (kcontrol->private_value >> 19) & 0x07;
+        int mask = (kcontrol->private_value >> 24) & 0xff;
+        int invert = (kcontrol->private_value >> 22) & 1;
+        unsigned char left, right;
+        
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        if (left_reg < 0xa0)
+                left = snd_es1688_mixer_read(chip, left_reg);
+        else
+                left = snd_es1688_read(chip, left_reg);
+        if (left_reg != right_reg) {
+                if (right_reg < 0xa0) 
+                        right = snd_es1688_mixer_read(chip, right_reg);
+                else
+                        right = snd_es1688_read(chip, right_reg);
+        } else
+                right = left;
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
+        ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
+        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_es1688_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        es1688_t *chip = snd_kcontrol_chip(kcontrol);
+        unsigned long flags;
+        int left_reg = kcontrol->private_value & 0xff;
+        int right_reg = (kcontrol->private_value >> 8) & 0xff;
+        int shift_left = (kcontrol->private_value >> 16) & 0x07;
+        int shift_right = (kcontrol->private_value >> 19) & 0x07;
+        int mask = (kcontrol->private_value >> 24) & 0xff;
+        int invert = (kcontrol->private_value >> 22) & 1;
+        int change;
+        unsigned char val1, val2, oval1, oval2;
+        
+        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->reg_lock, flags);
+        if (left_reg != right_reg) {
+                if (left_reg < 0xa0)
+                        oval1 = snd_es1688_mixer_read(chip, left_reg);
+                else
+                        oval1 = snd_es1688_read(chip, left_reg);
+                if (right_reg < 0xa0)
+                        oval2 = snd_es1688_mixer_read(chip, right_reg);
+                else
+                        oval2 = snd_es1688_read(chip, right_reg);
+                val1 = (oval1 & ~(mask << shift_left)) | val1;
+                val2 = (oval2 & ~(mask << shift_right)) | val2;
+                change = val1 != oval1 || val2 != oval2;
+                if (change) {
+                        if (left_reg < 0xa0)
+                                snd_es1688_mixer_write(chip, left_reg, val1);
+                        else
+                                snd_es1688_write(chip, left_reg, val1);
+                        if (right_reg < 0xa0)
+                                snd_es1688_mixer_write(chip, right_reg, val1);
+                        else
+                                snd_es1688_write(chip, right_reg, val1);
+                }
+        } else {
+                if (left_reg < 0xa0)
+                        oval1 = snd_es1688_mixer_read(chip, left_reg);
+                else
+                        oval1 = snd_es1688_read(chip, left_reg);
+                val1 = (oval1 & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
+                change = val1 != oval1;
+                if (change) {
+                        if (left_reg < 0xa0)
+                                snd_es1688_mixer_write(chip, left_reg, val1);
+                        else
+                                snd_es1688_write(chip, left_reg, val1);
+                }
+                        
+        }
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+        return change;
+}
+
+static snd_kcontrol_new_t snd_es1688_controls[] = {
+ES1688_DOUBLE("Master Playback Volume", 0, ES1688_MASTER_DEV, ES1688_MASTER_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("PCM Playback Volume", 0, ES1688_PCM_DEV, ES1688_PCM_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("Line Playback Volume", 0, ES1688_LINE_DEV, ES1688_LINE_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("CD Playback Volume", 0, ES1688_CD_DEV, ES1688_CD_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("FM Playback Volume", 0, ES1688_FM_DEV, ES1688_FM_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("Mic Playback Volume", 0, ES1688_MIC_DEV, ES1688_MIC_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("Aux Playback Volume", 0, ES1688_AUX_DEV, ES1688_AUX_DEV, 4, 0, 15, 0),
+ES1688_SINGLE("PC Speaker Playback Volume", 0, ES1688_SPEAKER_DEV, 0, 7, 0),
+ES1688_DOUBLE("Capture Volume", 0, ES1688_RECLEV_DEV, ES1688_RECLEV_DEV, 4, 0, 15, 0),
+ES1688_SINGLE("Capture Switch", 0, ES1688_REC_DEV, 4, 1, 1),
+{
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name = "Capture Source",
+        .info = snd_es1688_info_mux,
+        .get = snd_es1688_get_mux,
+        .put = snd_es1688_put_mux,
+},
+};
+
+#define ES1688_INIT_TABLE_SIZE (sizeof(snd_es1688_init_table)/2)
+
+static unsigned char snd_es1688_init_table[][2] = {
+        { ES1688_MASTER_DEV, 0 },
+        { ES1688_PCM_DEV, 0 },
+        { ES1688_LINE_DEV, 0 },
+        { ES1688_CD_DEV, 0 },
+        { ES1688_FM_DEV, 0 },
+        { ES1688_MIC_DEV, 0 },
+        { ES1688_AUX_DEV, 0 },
+        { ES1688_SPEAKER_DEV, 0 },
+        { ES1688_RECLEV_DEV, 0 },
+        { ES1688_REC_DEV, 0x17 }
+};
+                                        
+int snd_es1688_mixer(es1688_t *chip)
+{
+        snd_card_t *card;
+        unsigned int idx;
+        int err;
+        unsigned char reg, val;
+
+        snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
+
+        card = chip->card;
+
+        strcpy(card->mixername, snd_es1688_chip_id(chip));
+
+        for (idx = 0; idx < ARRAY_SIZE(snd_es1688_controls); idx++) {
+                if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es1688_controls[idx], chip))) < 0)
+                        return err;
+        }
+        for (idx = 0; idx < ES1688_INIT_TABLE_SIZE; idx++) {
+                reg = snd_es1688_init_table[idx][0];
+                val = snd_es1688_init_table[idx][1];
+                if (reg < 0xa0)
+                        snd_es1688_mixer_write(chip, reg, val);
+                else
+                        snd_es1688_write(chip, reg, val);
+        }
+        return 0;
+}
+
+EXPORT_SYMBOL(snd_es1688_mixer_write);
+EXPORT_SYMBOL(snd_es1688_create);
+EXPORT_SYMBOL(snd_es1688_pcm);
+EXPORT_SYMBOL(snd_es1688_mixer);
+
+/*
+ *  INIT part
+ */
+
+static int __init alsa_es1688_init(void)
+{
+        return 0;
+}
+
+static void __exit alsa_es1688_exit(void)
+{
+}
+
+module_init(alsa_es1688_init)
+module_exit(alsa_es1688_exit)