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jazz16.c

/*
 * jazz16.c - driver for Media Vision Jazz16 based soundcards.
 * Copyright (C) 2009 Krzysztof Helt <krzysztof.h1@wp.pl>
 * Based on patches posted by Rask Ingemann Lambertsen and Rene Herman.
 * Based on OSS Sound Blaster driver.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive for
 * more details.
 *
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <asm/dma.h>
#include <linux/isa.h>
#include <sound/core.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/sb.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>

#define PFX "jazz16: "

MODULE_DESCRIPTION("Media Vision Jazz16");
MODULE_SUPPORTED_DEVICE("{{Media Vision ??? },"
            "{RTL,RTL3000}}");

MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>");
MODULE_LICENSE("GPL");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;    /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;     /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;      /* Enable this card */
static unsigned long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
static unsigned long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
static int dma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Media Vision Jazz16 based soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Media Vision Jazz16 based soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Media Vision Jazz16 based soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for jazz16 driver.");
module_param_array(mpu_port, long, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for jazz16 driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for jazz16 driver.");
module_param_array(mpu_irq, int, NULL, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for jazz16 driver.");
module_param_array(dma8, int, NULL, 0444);
MODULE_PARM_DESC(dma8, "DMA8 # for jazz16 driver.");
module_param_array(dma16, int, NULL, 0444);
MODULE_PARM_DESC(dma16, "DMA16 # for jazz16 driver.");

#define SB_JAZZ16_WAKEUP      0xaf
#define SB_JAZZ16_SET_PORTS   0x50
#define SB_DSP_GET_JAZZ_BRD_REV     0xfa
#define SB_JAZZ16_SET_DMAINTR 0xfb
#define SB_DSP_GET_JAZZ_MODEL 0xfe

struct snd_card_jazz16 {
      struct snd_sb *chip;
};

static irqreturn_t jazz16_interrupt(int irq, void *chip)
{
      return snd_sb8dsp_interrupt(chip);
}

static int __devinit jazz16_configure_ports(unsigned long port,
                                  unsigned long mpu_port, int idx)
{
      unsigned char val;

      if (!request_region(0x201, 1, "jazz16 config")) {
            snd_printk(KERN_ERR "config port region is already in use.\n");
            return -EBUSY;
      }
      outb(SB_JAZZ16_WAKEUP - idx, 0x201);
      udelay(100);
      outb(SB_JAZZ16_SET_PORTS + idx, 0x201);
      udelay(100);
      val = port & 0x70;
      val |= (mpu_port & 0x30) >> 4;
      outb(val, 0x201);

      release_region(0x201, 1);
      return 0;
}

static int __devinit jazz16_detect_board(unsigned long port,
                               unsigned long mpu_port)
{
      int err;
      int val;
      struct snd_sb chip;

      if (!request_region(port, 0x10, "jazz16")) {
            snd_printk(KERN_ERR "I/O port region is already in use.\n");
            return -EBUSY;
      }
      /* just to call snd_sbdsp_command/reset/get_byte() */
      chip.port = port;

      err = snd_sbdsp_reset(&chip);
      if (err < 0)
            for (val = 0; val < 4; val++) {
                  err = jazz16_configure_ports(port, mpu_port, val);
                  if (err < 0)
                        break;

                  err = snd_sbdsp_reset(&chip);
                  if (!err)
                        break;
            }
      if (err < 0) {
            err = -ENODEV;
            goto err_unmap;
      }
      if (!snd_sbdsp_command(&chip, SB_DSP_GET_JAZZ_BRD_REV)) {
            err = -EBUSY;
            goto err_unmap;
      }
      val = snd_sbdsp_get_byte(&chip);
      if (val >= 0x30)
            snd_sbdsp_get_byte(&chip);

      if ((val & 0xf0) != 0x10) {
            err = -ENODEV;
            goto err_unmap;
      }
      if (!snd_sbdsp_command(&chip, SB_DSP_GET_JAZZ_MODEL)) {
            err = -EBUSY;
            goto err_unmap;
      }
      snd_sbdsp_get_byte(&chip);
      err = snd_sbdsp_get_byte(&chip);
      snd_printd("Media Vision Jazz16 board detected: rev 0x%x, model 0x%x\n",
               val, err);

      err = 0;

err_unmap:
      release_region(port, 0x10);
      return err;
}

static int __devinit jazz16_configure_board(struct snd_sb *chip, int mpu_irq)
{
      static unsigned char jazz_irq_bits[] = { 0, 0, 2, 3, 0, 1, 0, 4,
                                     0, 2, 5, 0, 0, 0, 0, 6 };
      static unsigned char jazz_dma_bits[] = { 0, 1, 0, 2, 0, 3, 0, 4 };

      if (jazz_dma_bits[chip->dma8] == 0 ||
          jazz_dma_bits[chip->dma16] == 0 ||
          jazz_irq_bits[chip->irq] == 0)
            return -EINVAL;

      if (!snd_sbdsp_command(chip, SB_JAZZ16_SET_DMAINTR))
            return -EBUSY;

      if (!snd_sbdsp_command(chip,
                         jazz_dma_bits[chip->dma8] |
                         (jazz_dma_bits[chip->dma16] << 4)))
            return -EBUSY;

      if (!snd_sbdsp_command(chip,
                         jazz_irq_bits[chip->irq] |
                         (jazz_irq_bits[mpu_irq] << 4)))
            return -EBUSY;

      return 0;
}

static int __devinit snd_jazz16_match(struct device *devptr, unsigned int dev)
{
      if (!enable[dev])
            return 0;
      if (port[dev] == SNDRV_AUTO_PORT) {
            snd_printk(KERN_ERR "please specify port\n");
            return 0;
      } else if (port[dev] == 0x200 || (port[dev] & ~0x270)) {
            snd_printk(KERN_ERR "incorrect port specified\n");
            return 0;
      }
      if (dma8[dev] != SNDRV_AUTO_DMA &&
          dma8[dev] != 1 && dma8[dev] != 3) {
            snd_printk(KERN_ERR "dma8 must be 1 or 3\n");
            return 0;
      }
      if (dma16[dev] != SNDRV_AUTO_DMA &&
          dma16[dev] != 5 && dma16[dev] != 7) {
            snd_printk(KERN_ERR "dma16 must be 5 or 7\n");
            return 0;
      }
      if (mpu_port[dev] != SNDRV_AUTO_PORT &&
          (mpu_port[dev] & ~0x030) != 0x300) {
            snd_printk(KERN_ERR "incorrect mpu_port specified\n");
            return 0;
      }
      if (mpu_irq[dev] != SNDRV_AUTO_DMA &&
          mpu_irq[dev] != 2 && mpu_irq[dev] != 3 &&
          mpu_irq[dev] != 5 && mpu_irq[dev] != 7) {
            snd_printk(KERN_ERR "mpu_irq must be 2, 3, 5 or 7\n");
            return 0;
      }
      return 1;
}

static int __devinit snd_jazz16_probe(struct device *devptr, unsigned int dev)
{
      struct snd_card *card;
      struct snd_card_jazz16 *jazz16;
      struct snd_sb *chip;
      struct snd_opl3 *opl3;
      static int possible_irqs[] = {2, 3, 5, 7, 9, 10, 15, -1};
      static int possible_dmas8[] = {1, 3, -1};
      static int possible_dmas16[] = {5, 7, -1};
      int err, xirq, xdma8, xdma16, xmpu_port, xmpu_irq;

      err = snd_card_create(index[dev], id[dev], THIS_MODULE,
                        sizeof(struct snd_card_jazz16), &card);
      if (err < 0)
            return err;

      jazz16 = card->private_data;

      xirq = irq[dev];
      if (xirq == SNDRV_AUTO_IRQ) {
            xirq = snd_legacy_find_free_irq(possible_irqs);
            if (xirq < 0) {
                  snd_printk(KERN_ERR "unable to find a free IRQ\n");
                  err = -EBUSY;
                  goto err_free;
            }
      }
      xdma8 = dma8[dev];
      if (xdma8 == SNDRV_AUTO_DMA) {
            xdma8 = snd_legacy_find_free_dma(possible_dmas8);
            if (xdma8 < 0) {
                  snd_printk(KERN_ERR "unable to find a free DMA8\n");
                  err = -EBUSY;
                  goto err_free;
            }
      }
      xdma16 = dma16[dev];
      if (xdma16 == SNDRV_AUTO_DMA) {
            xdma16 = snd_legacy_find_free_dma(possible_dmas16);
            if (xdma16 < 0) {
                  snd_printk(KERN_ERR "unable to find a free DMA16\n");
                  err = -EBUSY;
                  goto err_free;
            }
      }

      xmpu_port = mpu_port[dev];
      if (xmpu_port == SNDRV_AUTO_PORT)
            xmpu_port = 0;
      err = jazz16_detect_board(port[dev], xmpu_port);
      if (err < 0) {
            printk(KERN_ERR "Media Vision Jazz16 board not detected\n");
            goto err_free;
      }
      err = snd_sbdsp_create(card, port[dev], irq[dev],
                         jazz16_interrupt,
                         dma8[dev], dma16[dev],
                         SB_HW_JAZZ16,
                         &chip);
      if (err < 0)
            goto err_free;

      xmpu_irq = mpu_irq[dev];
      if (xmpu_irq == SNDRV_AUTO_IRQ || mpu_port[dev] == SNDRV_AUTO_PORT)
            xmpu_irq = 0;
      err = jazz16_configure_board(chip, xmpu_irq);
      if (err < 0) {
            printk(KERN_ERR "Media Vision Jazz16 configuration failed\n");
            goto err_free;
      }

      jazz16->chip = chip;

      strcpy(card->driver, "jazz16");
      strcpy(card->shortname, "Media Vision Jazz16");
      sprintf(card->longname,
            "Media Vision Jazz16 at 0x%lx, irq %d, dma8 %d, dma16 %d",
            port[dev], xirq, xdma8, xdma16);

      err = snd_sb8dsp_pcm(chip, 0, NULL);
      if (err < 0)
            goto err_free;
      err = snd_sbmixer_new(chip);
      if (err < 0)
            goto err_free;

      err = snd_opl3_create(card, chip->port, chip->port + 2,
                        OPL3_HW_AUTO, 1, &opl3);
      if (err < 0)
            snd_printk(KERN_WARNING "no OPL device at 0x%lx-0x%lx\n",
                     chip->port, chip->port + 2);
      else {
            err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
            if (err < 0)
                  goto err_free;
      }
      if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
            if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
                  mpu_irq[dev] = -1;

            if (snd_mpu401_uart_new(card, 0,
                              MPU401_HW_MPU401,
                              mpu_port[dev], 0,
                              mpu_irq[dev],
                              mpu_irq[dev] >= 0 ? IRQF_DISABLED : 0,
                              NULL) < 0)
                  snd_printk(KERN_ERR "no MPU-401 device at 0x%lx\n",
                              mpu_port[dev]);
      }

      snd_card_set_dev(card, devptr);

      err = snd_card_register(card);
      if (err < 0)
            goto err_free;

      dev_set_drvdata(devptr, card);
      return 0;

err_free:
      snd_card_free(card);
      return err;
}

static int __devexit snd_jazz16_remove(struct device *devptr, unsigned int dev)
{
      struct snd_card *card = dev_get_drvdata(devptr);

      dev_set_drvdata(devptr, NULL);
      snd_card_free(card);
      return 0;
}

#ifdef CONFIG_PM
static int snd_jazz16_suspend(struct device *pdev, unsigned int n,
                         pm_message_t state)
{
      struct snd_card *card = dev_get_drvdata(pdev);
      struct snd_card_jazz16 *acard = card->private_data;
      struct snd_sb *chip = acard->chip;

      snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
      snd_pcm_suspend_all(chip->pcm);
      snd_sbmixer_suspend(chip);
      return 0;
}

static int snd_jazz16_resume(struct device *pdev, unsigned int n)
{
      struct snd_card *card = dev_get_drvdata(pdev);
      struct snd_card_jazz16 *acard = card->private_data;
      struct snd_sb *chip = acard->chip;

      snd_sbdsp_reset(chip);
      snd_sbmixer_resume(chip);
      snd_power_change_state(card, SNDRV_CTL_POWER_D0);
      return 0;
}
#endif

static struct isa_driver snd_jazz16_driver = {
      .match            = snd_jazz16_match,
      .probe            = snd_jazz16_probe,
      .remove           = __devexit_p(snd_jazz16_remove),
#ifdef CONFIG_PM
      .suspend    = snd_jazz16_suspend,
      .resume           = snd_jazz16_resume,
#endif
      .driver           = {
            .name = "jazz16"
      },
};

static int __init alsa_card_jazz16_init(void)
{
      return isa_register_driver(&snd_jazz16_driver, SNDRV_CARDS);
}

static void __exit alsa_card_jazz16_exit(void)
{
      isa_unregister_driver(&snd_jazz16_driver);
}

module_init(alsa_card_jazz16_init)
module_exit(alsa_card_jazz16_exit)

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