1 files changed, 322 insertions, 0 deletions

diff --git a/sound/isa/sgalaxy.c b/sound/isa/sgalaxy.c
new file mode 100644
index 000000000000..17f585b0ddc1
--- /dev/null
+++ b/sound/isa/sgalaxy.c
@@ -0,0 +1,322 @@
+/*
+ *  Driver for Aztech Sound Galaxy cards
+ *  Copyright (c) by Christopher Butler <chrisb@sandy.force9.co.uk.
+ *
+ *  I don't have documentation for this card, I based this driver on the
+ *  driver for OSS/Free included in the kernel source (drivers/sound/sgalaxy.c)
+ *
+ *   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/dma.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/time.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/sb.h>
+#include <sound/ad1848.h>
+#include <sound/control.h>
+#define SNDRV_LEGACY_FIND_FREE_IRQ
+#define SNDRV_LEGACY_FIND_FREE_DMA
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
+MODULE_DESCRIPTION("Aztech Sound Galaxy");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
+
+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 long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;   /* 0x220,0x240 */
+static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;  /* 0x530,0xe80,0xf40,0x604 */
+static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 7,9,10,11 */
+static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3 */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
+module_param_array(sbport, long, NULL, 0444);
+MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
+module_param_array(wssport, long, NULL, 0444);
+MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
+module_param_array(irq, int, NULL, 0444);
+MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
+module_param_array(dma1, int, NULL, 0444);
+MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");
+
+#define SGALAXY_AUXC_LEFT 18
+#define SGALAXY_AUXC_RIGHT 19
+
+static snd_card_t *snd_sgalaxy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+
+/*
+
+ */
+
+#define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
+
+/* from lowlevel/sb/sb.c - to avoid having to allocate a sb_t for the */
+/* short time we actually need it.. */
+
+static int snd_sgalaxy_sbdsp_reset(unsigned long port)
+{
+        int i;
+
+        outb(1, SBP1(port, RESET));
+        udelay(10);
+        outb(0, SBP1(port, RESET));
+        udelay(30);
+        for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
+        if (inb(SBP1(port, READ)) != 0xaa) {
+                snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
+                return -ENODEV;
+        }
+        return 0;
+}
+
+static int __init snd_sgalaxy_sbdsp_command(unsigned long port, unsigned char val)
+{
+        int i;
+        
+        for (i = 10000; i; i--)
+                if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
+                        outb(val, SBP1(port, COMMAND));
+                        return 1;
+                }
+
+        return 0;
+}
+
+static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        return IRQ_NONE;
+}
+
+static int __init snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
+{
+        static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1, 
+                                       0x10, 0x18, 0x20, -1, -1, -1, -1};
+        static int dma_bits[] = {1, 2, 0, 3};
+        int tmp, tmp1;
+
+        if ((tmp = inb(port + 3)) == 0xff)
+        {
+                snd_printdd("I/O address dead (0x%lx)\n", port);
+                return 0;
+        }
+#if 0
+        snd_printdd("WSS signature = 0x%x\n", tmp);
+#endif
+
+        if ((tmp & 0x3f) != 0x04 &&
+            (tmp & 0x3f) != 0x0f &&
+            (tmp & 0x3f) != 0x00) {
+                snd_printdd("No WSS signature detected on port 0x%lx\n",
+                            port + 3);
+                return 0;
+        }
+
+#if 0
+        snd_printdd("sgalaxy - setting up IRQ/DMA for WSS\n");
+#endif
+
+        /* initialize IRQ for WSS codec */
+        tmp = interrupt_bits[irq % 16];
+        if (tmp < 0)
+                return -EINVAL;
+
+        if (request_irq(irq, snd_sgalaxy_dummy_interrupt, SA_INTERRUPT, "sgalaxy", NULL)) {
+                snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
+                return -EIO;
+        }
+
+        outb(tmp | 0x40, port);
+        tmp1 = dma_bits[dma % 4];
+        outb(tmp | tmp1, port);
+
+        free_irq(irq, NULL);
+
+        return 0;
+}
+
+static int __init snd_sgalaxy_detect(int dev, int irq, int dma)
+{
+#if 0
+        snd_printdd("sgalaxy - switching to WSS mode\n");
+#endif
+
+        /* switch to WSS mode */
+        snd_sgalaxy_sbdsp_reset(sbport[dev]);
+
+        snd_sgalaxy_sbdsp_command(sbport[dev], 9);
+        snd_sgalaxy_sbdsp_command(sbport[dev], 0);
+
+        udelay(400);
+        return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
+}
+
+static struct ad1848_mix_elem snd_sgalaxy_controls[] = {
+AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
+AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
+};
+
+static int __init snd_sgalaxy_mixer(ad1848_t *chip)
+{
+        snd_card_t *card = chip->card;
+        snd_ctl_elem_id_t id1, id2;
+        unsigned int idx;
+        int err;
+
+        memset(&id1, 0, sizeof(id1));
+        memset(&id2, 0, sizeof(id2));
+        id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+        /* reassign AUX0 to LINE */
+        strcpy(id1.name, "Aux Playback Switch");
+        strcpy(id2.name, "Line Playback Switch");
+        if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
+                return err;
+        strcpy(id1.name, "Aux Playback Volume");
+        strcpy(id2.name, "Line Playback Volume");
+        if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
+                return err;
+        /* reassign AUX1 to FM */
+        strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
+        strcpy(id2.name, "FM Playback Switch");
+        if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
+                return err;
+        strcpy(id1.name, "Aux Playback Volume");
+        strcpy(id2.name, "FM Playback Volume");
+        if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
+                return err;
+        /* build AUX2 input */
+        for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
+                if ((err = snd_ad1848_add_ctl_elem(chip, &snd_sgalaxy_controls[idx])) < 0)
+                        return err;
+        }
+        return 0;
+}
+
+static int __init snd_sgalaxy_probe(int dev)
+{
+        static int possible_irqs[] = {7, 9, 10, 11, -1};
+        static int possible_dmas[] = {1, 3, 0, -1};
+        int err, xirq, xdma1;
+        snd_card_t *card;
+        ad1848_t *chip;
+
+        if (sbport[dev] == SNDRV_AUTO_PORT) {
+                snd_printk("specify SB port\n");
+                return -EINVAL;
+        }
+        if (wssport[dev] == SNDRV_AUTO_PORT) {
+                snd_printk("specify WSS port\n");
+                return -EINVAL;
+        }
+        card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+        if (card == NULL)
+                return -ENOMEM;
+
+        xirq = irq[dev];
+        if (xirq == SNDRV_AUTO_IRQ) {
+                if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
+                        snd_card_free(card);
+                        snd_printk("unable to find a free IRQ\n");
+                        return -EBUSY;
+                }
+        }
+        xdma1 = dma1[dev];
+        if (xdma1 == SNDRV_AUTO_DMA) {
+                if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
+                        snd_card_free(card);
+                        snd_printk("unable to find a free DMA\n");
+                        return -EBUSY;
+                }
+        }
+
+        if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0) {
+                snd_card_free(card);
+                return err;
+        }
+
+        if ((err = snd_ad1848_create(card, wssport[dev] + 4,
+                                     xirq, xdma1,
+                                     AD1848_HW_DETECT, &chip)) < 0) {
+                snd_card_free(card);
+                return err;
+        }
+
+        if ((err = snd_ad1848_pcm(chip, 0, NULL)) < 0) {
+                snd_printdd("sgalaxy - error creating new ad1848 PCM device\n");
+                snd_card_free(card);
+                return err;
+        }
+        if ((err = snd_ad1848_mixer(chip)) < 0) {
+                snd_printdd("sgalaxy - error creating new ad1848 mixer\n");
+                snd_card_free(card);
+                return err;
+        }
+        if (snd_sgalaxy_mixer(chip) < 0) {
+                snd_printdd("sgalaxy - the mixer rewrite failed\n");
+                snd_card_free(card);
+                return err;
+        }
+
+        strcpy(card->driver, "Sound Galaxy");
+        strcpy(card->shortname, "Sound Galaxy");
+        sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
+                wssport[dev], xirq, xdma1);
+
+        if ((err = snd_card_register(card)) < 0) {
+                snd_card_free(card);
+                return err;
+        }
+        snd_sgalaxy_cards[dev] = card;
+        return 0;
+}
+
+static int __init alsa_card_sgalaxy_init(void)
+{
+        int dev, cards;
+
+        for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
+                if (snd_sgalaxy_probe(dev) >= 0)
+                        cards++;
+        }
+        if (!cards) {
+#ifdef MODULE
+                snd_printk(KERN_ERR "Sound Galaxy soundcard not found or device busy\n");
+#endif
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static void __exit alsa_card_sgalaxy_exit(void)
+{
+        int idx;
+
+        for (idx = 0; idx < SNDRV_CARDS; idx++)
+                snd_card_free(snd_sgalaxy_cards[idx]);
+}
+
+module_init(alsa_card_sgalaxy_init)
+module_exit(alsa_card_sgalaxy_exit)