aboutsummaryrefslogtreecommitdiff
path: root/sound/pci/als4000.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/pci/als4000.c')
-rw-r--r--sound/pci/als4000.c789
1 files changed, 789 insertions, 0 deletions
diff --git a/sound/pci/als4000.c b/sound/pci/als4000.c
new file mode 100644
index 00000000000..f1a5f5723ee
--- /dev/null
+++ b/sound/pci/als4000.c
@@ -0,0 +1,789 @@
+/*
+ * card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
+ * Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
+ * Jaroslav Kysela <perex@suse.cz>
+ * Copyright (C) 2002 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
+ *
+ * Framework borrowed from Massimo Piccioni's card-als100.c.
+ *
+ * NOTES
+ *
+ * Since Avance does not provide any meaningful documentation, and I
+ * bought an ALS4000 based soundcard, I was forced to base this driver
+ * on reverse engineering.
+ *
+ * Note: this is no longer true. Pretty verbose chip docu (ALS4000a.PDF)
+ * can be found on the ALSA web site.
+ *
+ * The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
+ * ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport
+ * interface. These subsystems can be mapped into ISA io-port space,
+ * using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ
+ * services to the subsystems.
+ *
+ * While ALS4000 is very similar to a SoundBlaster, the differences in
+ * DMA and capturing require more changes to the SoundBlaster than
+ * desirable, so I made this separate driver.
+ *
+ * The ALS4000 can do real full duplex playback/capture.
+ *
+ * FMDAC:
+ * - 0x4f -> port 0x14
+ * - port 0x15 |= 1
+ *
+ * Enable/disable 3D sound:
+ * - 0x50 -> port 0x14
+ * - change bit 6 (0x40) of port 0x15
+ *
+ * Set QSound:
+ * - 0xdb -> port 0x14
+ * - set port 0x15:
+ * 0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
+ *
+ * Set KSound:
+ * - value -> some port 0x0c0d
+ *
+ * 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 <asm/io.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/gameport.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/rawmidi.h>
+#include <sound/mpu401.h>
+#include <sound/opl3.h>
+#include <sound/sb.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
+MODULE_DESCRIPTION("Avance Logic ALS4000");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
+
+#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
+#define SUPPORT_JOYSTICK 1
+#endif
+
+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_PNP; /* Enable this card */
+#ifdef SUPPORT_JOYSTICK
+static int joystick_port[SNDRV_CARDS];
+#endif
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
+#ifdef SUPPORT_JOYSTICK
+module_param_array(joystick_port, int, NULL, 0444);
+MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
+#endif
+
+typedef struct {
+ struct pci_dev *pci;
+ unsigned long gcr;
+#ifdef SUPPORT_JOYSTICK
+ struct gameport *gameport;
+#endif
+} snd_card_als4000_t;
+
+static struct pci_device_id snd_als4000_ids[] = {
+ { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* ALS4000 */
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
+
+static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
+{
+ outb(reg, port+0x0c);
+ outl(val, port+0x08);
+}
+
+static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
+{
+ snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
+}
+
+static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
+{
+ outb(reg, port+0x0c);
+ return inl(port+0x08);
+}
+
+static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
+{
+ return snd_als4000_gcr_read_addr(sb->alt_port, reg);
+}
+
+static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
+{
+ if (!(chip->mode & SB_RATE_LOCK)) {
+ snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
+ snd_sbdsp_command(chip, rate>>8);
+ snd_sbdsp_command(chip, rate);
+ }
+}
+
+static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
+{
+ snd_als4000_gcr_write(chip, 0xa2, addr);
+ snd_als4000_gcr_write(chip, 0xa3, (size-1));
+}
+
+static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
+{
+ snd_als4000_gcr_write(chip, 0x91, addr);
+ snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
+}
+
+#define ALS4000_FORMAT_SIGNED (1<<0)
+#define ALS4000_FORMAT_16BIT (1<<1)
+#define ALS4000_FORMAT_STEREO (1<<2)
+
+static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
+{
+ int result;
+
+ result = 0;
+ if (snd_pcm_format_signed(runtime->format))
+ result |= ALS4000_FORMAT_SIGNED;
+ if (snd_pcm_format_physical_width(runtime->format) == 16)
+ result |= ALS4000_FORMAT_16BIT;
+ if (runtime->channels > 1)
+ result |= ALS4000_FORMAT_STEREO;
+ return result;
+}
+
+/* structure for setting up playback */
+static struct {
+ unsigned char dsp_cmd, dma_on, dma_off, format;
+} playback_cmd_vals[]={
+/* ALS4000_FORMAT_U8_MONO */
+{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
+/* ALS4000_FORMAT_S8_MONO */
+{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
+/* ALS4000_FORMAT_U16L_MONO */
+{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
+/* ALS4000_FORMAT_S16L_MONO */
+{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
+/* ALS4000_FORMAT_U8_STEREO */
+{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
+/* ALS4000_FORMAT_S8_STEREO */
+{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
+/* ALS4000_FORMAT_U16L_STEREO */
+{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
+/* ALS4000_FORMAT_S16L_STEREO */
+{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
+};
+#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
+
+/* structure for setting up capture */
+enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
+static unsigned char capture_cmd_vals[]=
+{
+CMD_WIDTH8|CMD_MONO, /* ALS4000_FORMAT_U8_MONO */
+CMD_WIDTH8|CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S8_MONO */
+CMD_MONO, /* ALS4000_FORMAT_U16L_MONO */
+CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S16L_MONO */
+CMD_WIDTH8|CMD_STEREO, /* ALS4000_FORMAT_U8_STEREO */
+CMD_WIDTH8|CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S8_STEREO */
+CMD_STEREO, /* ALS4000_FORMAT_U16L_STEREO */
+CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S16L_STEREO */
+};
+#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
+
+static int snd_als4000_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_als4000_hw_free(snd_pcm_substream_t * substream)
+{
+ snd_pcm_lib_free_pages(substream);
+ return 0;
+}
+
+static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
+{
+ unsigned long flags;
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ unsigned long size;
+ unsigned count;
+
+ chip->capture_format = snd_als4000_get_format(runtime);
+
+ size = snd_pcm_lib_buffer_bytes(substream);
+ count = snd_pcm_lib_period_bytes(substream);
+
+ if (chip->capture_format & ALS4000_FORMAT_16BIT)
+ count >>=1;
+ count--;
+
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ snd_als4000_set_rate(chip, runtime->rate);
+ snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ spin_lock_irqsave(&chip->mixer_lock, flags );
+ snd_sbmixer_write(chip, 0xdc, count);
+ snd_sbmixer_write(chip, 0xdd, count>>8);
+ spin_unlock_irqrestore(&chip->mixer_lock, flags );
+ return 0;
+}
+
+static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
+{
+ unsigned long flags;
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ unsigned long size;
+ unsigned count;
+
+ chip->playback_format = snd_als4000_get_format(runtime);
+
+ size = snd_pcm_lib_buffer_bytes(substream);
+ count = snd_pcm_lib_period_bytes(substream);
+
+ if (chip->playback_format & ALS4000_FORMAT_16BIT)
+ count >>=1;
+ count--;
+
+ /* FIXME: from second playback on, there's a lot more clicks and pops
+ * involved here than on first playback. Fiddling with
+ * tons of different settings didn't help (DMA, speaker on/off,
+ * reordering, ...). Something seems to get enabled on playback
+ * that I haven't found out how to disable again, which then causes
+ * the switching pops to reach the speakers the next time here. */
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ snd_als4000_set_rate(chip, runtime->rate);
+ snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
+
+ /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
+ /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
+ snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
+ snd_sbdsp_command(chip, playback_cmd(chip).format);
+ snd_sbdsp_command(chip, count);
+ snd_sbdsp_command(chip, count>>8);
+ snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+ return 0;
+}
+
+static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ int result = 0;
+
+ spin_lock(&chip->mixer_lock);
+ if (cmd == SNDRV_PCM_TRIGGER_START) {
+ chip->mode |= SB_RATE_LOCK_CAPTURE;
+ snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
+ } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+ chip->mode &= ~SB_RATE_LOCK_CAPTURE;
+ snd_sbmixer_write(chip, 0xde, 0);
+ } else {
+ result = -EINVAL;
+ }
+ spin_unlock(&chip->mixer_lock);
+ return result;
+}
+
+static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ int result = 0;
+
+ spin_lock(&chip->reg_lock);
+ if (cmd == SNDRV_PCM_TRIGGER_START) {
+ chip->mode |= SB_RATE_LOCK_PLAYBACK;
+ snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
+ } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+ snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
+ chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
+ } else {
+ result = -EINVAL;
+ }
+ spin_unlock(&chip->reg_lock);
+ return result;
+}
+
+static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ unsigned int result;
+
+ spin_lock(&chip->reg_lock);
+ result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
+ spin_unlock(&chip->reg_lock);
+ return bytes_to_frames( substream->runtime, result );
+}
+
+static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ unsigned result;
+
+ spin_lock(&chip->reg_lock);
+ result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
+ spin_unlock(&chip->reg_lock);
+ return bytes_to_frames( substream->runtime, result );
+}
+
+static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ sb_t *chip = dev_id;
+ unsigned gcr_status;
+ unsigned sb_status;
+
+ /* find out which bit of the ALS4000 produced the interrupt */
+ gcr_status = inb(chip->alt_port + 0xe);
+
+ if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
+ snd_pcm_period_elapsed(chip->playback_substream);
+ if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
+ snd_pcm_period_elapsed(chip->capture_substream);
+ if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
+ snd_mpu401_uart_interrupt(irq, chip->rmidi, regs);
+ /* release the gcr */
+ outb(gcr_status, chip->alt_port + 0xe);
+
+ spin_lock(&chip->mixer_lock);
+ sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
+ spin_unlock(&chip->mixer_lock);
+
+ if (sb_status & SB_IRQTYPE_8BIT)
+ snd_sb_ack_8bit(chip);
+ if (sb_status & SB_IRQTYPE_16BIT)
+ snd_sb_ack_16bit(chip);
+ if (sb_status & SB_IRQTYPE_MPUIN)
+ inb(chip->mpu_port);
+ if (sb_status & 0x20)
+ inb(SBP(chip, RESET));
+ return IRQ_HANDLED;
+}
+
+/*****************************************************************/
+
+static snd_pcm_hardware_t snd_als4000_playback =
+{
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
+ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
+ .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_als4000_capture =
+{
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
+ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
+ .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_als4000_playback_open(snd_pcm_substream_t * substream)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+
+ chip->playback_substream = substream;
+ runtime->hw = snd_als4000_playback;
+ return 0;
+}
+
+static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+
+ chip->playback_substream = NULL;
+ snd_pcm_lib_free_pages(substream);
+ return 0;
+}
+
+static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+
+ chip->capture_substream = substream;
+ runtime->hw = snd_als4000_capture;
+ return 0;
+}
+
+static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
+{
+ sb_t *chip = snd_pcm_substream_chip(substream);
+
+ chip->capture_substream = NULL;
+ snd_pcm_lib_free_pages(substream);
+ return 0;
+}
+
+/******************************************************************/
+
+static snd_pcm_ops_t snd_als4000_playback_ops = {
+ .open = snd_als4000_playback_open,
+ .close = snd_als4000_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_als4000_hw_params,
+ .hw_free = snd_als4000_hw_free,
+ .prepare = snd_als4000_playback_prepare,
+ .trigger = snd_als4000_playback_trigger,
+ .pointer = snd_als4000_playback_pointer
+};
+
+static snd_pcm_ops_t snd_als4000_capture_ops = {
+ .open = snd_als4000_capture_open,
+ .close = snd_als4000_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_als4000_hw_params,
+ .hw_free = snd_als4000_hw_free,
+ .prepare = snd_als4000_capture_prepare,
+ .trigger = snd_als4000_capture_trigger,
+ .pointer = snd_als4000_capture_pointer
+};
+
+static void snd_als4000_pcm_free(snd_pcm_t *pcm)
+{
+ sb_t *chip = pcm->private_data;
+ chip->pcm = NULL;
+ snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+static int __devinit snd_als4000_pcm(sb_t *chip, int device)
+{
+ snd_pcm_t *pcm;
+ int err;
+
+ if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
+ return err;
+ pcm->private_free = snd_als4000_pcm_free;
+ pcm->private_data = chip;
+ pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
+
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
+ 64*1024, 64*1024);
+
+ chip->pcm = pcm;
+
+ return 0;
+}
+
+/******************************************************************/
+
+static void snd_als4000_set_addr(unsigned long gcr,
+ unsigned int sb,
+ unsigned int mpu,
+ unsigned int opl,
+ unsigned int game)
+{
+ u32 confA = 0;
+ u32 confB = 0;
+
+ if (mpu > 0)
+ confB |= (mpu | 1) << 16;
+ if (sb > 0)
+ confB |= (sb | 1);
+ if (game > 0)
+ confA |= (game | 1) << 16;
+ if (opl > 0)
+ confA |= (opl | 1);
+ snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
+ snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
+}
+
+static void __devinit snd_als4000_configure(sb_t *chip)
+{
+ unsigned tmp;
+ int i;
+
+ /* do some more configuration */
+ spin_lock_irq(&chip->mixer_lock);
+ tmp = snd_sbmixer_read(chip, 0xc0);
+ snd_sbmixer_write(chip, 0xc0, tmp|0x80);
+ /* always select DMA channel 0, since we do not actually use DMA */
+ snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
+ snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
+ spin_unlock_irq(&chip->mixer_lock);
+
+ spin_lock_irq(&chip->reg_lock);
+ /* magic number. Enables interrupts(?) */
+ snd_als4000_gcr_write(chip, 0x8c, 0x28000);
+ for(i = 0x91; i <= 0x96; ++i)
+ snd_als4000_gcr_write(chip, i, 0);
+
+ snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
+ spin_unlock_irq(&chip->reg_lock);
+}
+
+#ifdef SUPPORT_JOYSTICK
+static int __devinit snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev)
+{
+ struct gameport *gp;
+ struct resource *r;
+ int io_port;
+
+ if (joystick_port[dev] == 0)
+ return -ENODEV;
+
+ if (joystick_port[dev] == 1) { /* auto-detect */
+ for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
+ r = request_region(io_port, 8, "ALS4000 gameport");
+ if (r)
+ break;
+ }
+ } else {
+ io_port = joystick_port[dev];
+ r = request_region(io_port, 8, "ALS4000 gameport");
+ }
+
+ if (!r) {
+ printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
+ return -EBUSY;
+ }
+
+ acard->gameport = gp = gameport_allocate_port();
+ if (!gp) {
+ printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
+ release_resource(r);
+ kfree_nocheck(r);
+ return -ENOMEM;
+ }
+
+ gameport_set_name(gp, "ALS4000 Gameport");
+ gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
+ gameport_set_dev_parent(gp, &acard->pci->dev);
+ gp->io = io_port;
+ gameport_set_port_data(gp, r);
+
+ /* Enable legacy joystick port */
+ snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
+
+ gameport_register_port(acard->gameport);
+
+ return 0;
+}
+
+static void snd_als4000_free_gameport(snd_card_als4000_t *acard)
+{
+ if (acard->gameport) {
+ struct resource *r = gameport_get_port_data(acard->gameport);
+
+ gameport_unregister_port(acard->gameport);
+ acard->gameport = NULL;
+
+ snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
+ release_resource(r);
+ kfree_nocheck(r);
+ }
+}
+#else
+static inline int snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev) { return -ENOSYS; }
+static inline void snd_als4000_free_gameport(snd_card_als4000_t *acard) { }
+#endif
+
+static void snd_card_als4000_free( snd_card_t *card )
+{
+ snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
+
+ /* make sure that interrupts are disabled */
+ snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
+ /* free resources */
+ snd_als4000_free_gameport(acard);
+ pci_release_regions(acard->pci);
+ pci_disable_device(acard->pci);
+}
+
+static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ static int dev;
+ snd_card_t *card;
+ snd_card_als4000_t *acard;
+ unsigned long gcr;
+ sb_t *chip;
+ opl3_t *opl3;
+ unsigned short word;
+ int err;
+
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+ if (!enable[dev]) {
+ dev++;
+ return -ENOENT;
+ }
+
+ /* enable PCI device */
+ if ((err = pci_enable_device(pci)) < 0) {
+ return err;
+ }
+ /* check, if we can restrict PCI DMA transfers to 24 bits */
+ if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
+ pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
+ snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
+ pci_disable_device(pci);
+ return -ENXIO;
+ }
+
+ if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
+ pci_disable_device(pci);
+ return err;
+ }
+ gcr = pci_resource_start(pci, 0);
+
+ pci_read_config_word(pci, PCI_COMMAND, &word);
+ pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
+ pci_set_master(pci);
+
+ card = snd_card_new(index[dev], id[dev], THIS_MODULE,
+ sizeof( snd_card_als4000_t ) );
+ if (card == NULL) {
+ pci_release_regions(pci);
+ pci_disable_device(pci);
+ return -ENOMEM;
+ }
+
+ acard = (snd_card_als4000_t *)card->private_data;
+ acard->pci = pci;
+ acard->gcr = gcr;
+ card->private_free = snd_card_als4000_free;
+
+ /* disable all legacy ISA stuff */
+ snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0);
+
+ if ((err = snd_sbdsp_create(card,
+ gcr + 0x10,
+ pci->irq,
+ snd_als4000_interrupt,
+ -1,
+ -1,
+ SB_HW_ALS4000,
+ &chip)) < 0) {
+ snd_card_free(card);
+ return err;
+ }
+
+ chip->pci = pci;
+ chip->alt_port = gcr;
+ snd_card_set_dev(card, &pci->dev);
+
+ snd_als4000_configure(chip);
+
+ strcpy(card->driver, "ALS4000");
+ strcpy(card->shortname, "Avance Logic ALS4000");
+ sprintf(card->longname, "%s at 0x%lx, irq %i",
+ card->shortname, chip->alt_port, chip->irq);
+
+ if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
+ gcr+0x30, 1, pci->irq, 0,
+ &chip->rmidi)) < 0) {
+ snd_card_free(card);
+ printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
+ return err;
+ }
+
+ if ((err = snd_als4000_pcm(chip, 0)) < 0) {
+ snd_card_free(card);
+ return err;
+ }
+ if ((err = snd_sbmixer_new(chip)) < 0) {
+ snd_card_free(card);
+ return err;
+ }
+
+ if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
+ OPL3_HW_AUTO, 1, &opl3) < 0) {
+ printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
+ gcr+0x10, gcr+0x12 );
+ } else {
+ if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
+ snd_card_free(card);
+ return err;
+ }
+ }
+
+ snd_als4000_create_gameport(acard, dev);
+
+ if ((err = snd_card_register(card)) < 0) {
+ snd_card_free(card);
+ return err;
+ }
+ pci_set_drvdata(pci, card);
+ dev++;
+ return 0;
+}
+
+static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
+{
+ snd_card_free(pci_get_drvdata(pci));
+ pci_set_drvdata(pci, NULL);
+}
+
+static struct pci_driver driver = {
+ .name = "ALS4000",
+ .id_table = snd_als4000_ids,
+ .probe = snd_card_als4000_probe,
+ .remove = __devexit_p(snd_card_als4000_remove),
+};
+
+static int __init alsa_card_als4000_init(void)
+{
+ return pci_module_init(&driver);
+}
+
+static void __exit alsa_card_als4000_exit(void)
+{
+ pci_unregister_driver(&driver);
+}
+
+module_init(alsa_card_als4000_init)
+module_exit(alsa_card_als4000_exit)