diff options
Diffstat (limited to 'sound/isa/sgalaxy.c')
| -rw-r--r-- | sound/isa/sgalaxy.c | 322 |
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) |