dcccdd938e
Unregister the platform device again if the probe was unsuccessful. This restores the behaviour of not loading the driver on probe() failure. Signed-off-by: Rene Herman <rene.herman@keyaccess.nl> Signed-off-by: Takashi Iwai <tiwai@suse.de>
395 lines
11 KiB
C
395 lines
11 KiB
C
/*
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* Driver for Aztech Sound Galaxy cards
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* Copyright (c) by Christopher Butler <chrisb@sandy.force9.co.uk.
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*
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* I don't have documentation for this card, I based this driver on the
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* driver for OSS/Free included in the kernel source (drivers/sound/sgalaxy.c)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/time.h>
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#include <linux/interrupt.h>
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#include <linux/moduleparam.h>
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#include <asm/dma.h>
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#include <sound/core.h>
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#include <sound/sb.h>
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#include <sound/ad1848.h>
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#include <sound/control.h>
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#define SNDRV_LEGACY_FIND_FREE_IRQ
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#define SNDRV_LEGACY_FIND_FREE_DMA
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#include <sound/initval.h>
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MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
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MODULE_DESCRIPTION("Aztech Sound Galaxy");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
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static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240 */
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static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x530,0xe80,0xf40,0x604 */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 7,9,10,11 */
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static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3 */
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
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module_param_array(sbport, long, NULL, 0444);
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MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
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module_param_array(wssport, long, NULL, 0444);
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MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
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module_param_array(dma1, int, NULL, 0444);
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MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");
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static struct platform_device *devices[SNDRV_CARDS];
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#define SGALAXY_AUXC_LEFT 18
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#define SGALAXY_AUXC_RIGHT 19
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#define PFX "sgalaxy: "
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/*
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*/
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#define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
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/* from lowlevel/sb/sb.c - to avoid having to allocate a struct snd_sb for the */
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/* short time we actually need it.. */
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static int snd_sgalaxy_sbdsp_reset(unsigned long port)
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{
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int i;
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outb(1, SBP1(port, RESET));
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udelay(10);
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outb(0, SBP1(port, RESET));
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udelay(30);
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for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
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if (inb(SBP1(port, READ)) != 0xaa) {
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snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
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return -ENODEV;
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}
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return 0;
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}
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static int __init snd_sgalaxy_sbdsp_command(unsigned long port, unsigned char val)
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{
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int i;
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for (i = 10000; i; i--)
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if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
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outb(val, SBP1(port, COMMAND));
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return 1;
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}
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return 0;
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}
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static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
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{
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return IRQ_NONE;
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}
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static int __init snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
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{
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static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1,
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0x10, 0x18, 0x20, -1, -1, -1, -1};
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static int dma_bits[] = {1, 2, 0, 3};
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int tmp, tmp1;
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if ((tmp = inb(port + 3)) == 0xff)
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{
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snd_printdd("I/O address dead (0x%lx)\n", port);
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return 0;
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}
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#if 0
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snd_printdd("WSS signature = 0x%x\n", tmp);
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#endif
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if ((tmp & 0x3f) != 0x04 &&
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(tmp & 0x3f) != 0x0f &&
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(tmp & 0x3f) != 0x00) {
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snd_printdd("No WSS signature detected on port 0x%lx\n",
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port + 3);
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return 0;
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}
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#if 0
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snd_printdd(PFX "setting up IRQ/DMA for WSS\n");
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#endif
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/* initialize IRQ for WSS codec */
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tmp = interrupt_bits[irq % 16];
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if (tmp < 0)
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return -EINVAL;
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if (request_irq(irq, snd_sgalaxy_dummy_interrupt, SA_INTERRUPT, "sgalaxy", NULL)) {
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snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
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return -EIO;
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}
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outb(tmp | 0x40, port);
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tmp1 = dma_bits[dma % 4];
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outb(tmp | tmp1, port);
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free_irq(irq, NULL);
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return 0;
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}
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static int __init snd_sgalaxy_detect(int dev, int irq, int dma)
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{
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#if 0
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snd_printdd(PFX "switching to WSS mode\n");
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#endif
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/* switch to WSS mode */
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snd_sgalaxy_sbdsp_reset(sbport[dev]);
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snd_sgalaxy_sbdsp_command(sbport[dev], 9);
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snd_sgalaxy_sbdsp_command(sbport[dev], 0);
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udelay(400);
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return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
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}
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static struct ad1848_mix_elem snd_sgalaxy_controls[] = {
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AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
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AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
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};
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static int __init snd_sgalaxy_mixer(struct snd_ad1848 *chip)
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{
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struct snd_card *card = chip->card;
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struct snd_ctl_elem_id id1, id2;
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unsigned int idx;
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int err;
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memset(&id1, 0, sizeof(id1));
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memset(&id2, 0, sizeof(id2));
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id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
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/* reassign AUX0 to LINE */
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strcpy(id1.name, "Aux Playback Switch");
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strcpy(id2.name, "Line Playback Switch");
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if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
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return err;
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strcpy(id1.name, "Aux Playback Volume");
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strcpy(id2.name, "Line Playback Volume");
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if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
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return err;
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/* reassign AUX1 to FM */
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strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
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strcpy(id2.name, "FM Playback Switch");
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if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
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return err;
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strcpy(id1.name, "Aux Playback Volume");
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strcpy(id2.name, "FM Playback Volume");
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if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
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return err;
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/* build AUX2 input */
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for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
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if ((err = snd_ad1848_add_ctl_elem(chip, &snd_sgalaxy_controls[idx])) < 0)
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return err;
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}
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return 0;
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}
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static int __init snd_sgalaxy_probe(struct platform_device *devptr)
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{
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int dev = devptr->id;
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static int possible_irqs[] = {7, 9, 10, 11, -1};
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static int possible_dmas[] = {1, 3, 0, -1};
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int err, xirq, xdma1;
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struct snd_card *card;
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struct snd_ad1848 *chip;
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if (sbport[dev] == SNDRV_AUTO_PORT) {
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snd_printk(KERN_ERR PFX "specify SB port\n");
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return -EINVAL;
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}
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if (wssport[dev] == SNDRV_AUTO_PORT) {
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snd_printk(KERN_ERR PFX "specify WSS port\n");
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return -EINVAL;
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}
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card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
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if (card == NULL)
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return -ENOMEM;
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xirq = irq[dev];
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if (xirq == SNDRV_AUTO_IRQ) {
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if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
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snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
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err = -EBUSY;
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goto _err;
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}
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}
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xdma1 = dma1[dev];
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if (xdma1 == SNDRV_AUTO_DMA) {
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if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
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snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
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err = -EBUSY;
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goto _err;
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}
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}
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if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0)
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goto _err;
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if ((err = snd_ad1848_create(card, wssport[dev] + 4,
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xirq, xdma1,
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AD1848_HW_DETECT, &chip)) < 0)
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goto _err;
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card->private_data = chip;
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if ((err = snd_ad1848_pcm(chip, 0, NULL)) < 0) {
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snd_printdd(PFX "error creating new ad1848 PCM device\n");
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goto _err;
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}
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if ((err = snd_ad1848_mixer(chip)) < 0) {
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snd_printdd(PFX "error creating new ad1848 mixer\n");
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goto _err;
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}
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if ((err = snd_sgalaxy_mixer(chip)) < 0) {
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snd_printdd(PFX "the mixer rewrite failed\n");
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goto _err;
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}
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strcpy(card->driver, "Sound Galaxy");
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strcpy(card->shortname, "Sound Galaxy");
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sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
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wssport[dev], xirq, xdma1);
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snd_card_set_dev(card, &devptr->dev);
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if ((err = snd_card_register(card)) < 0)
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goto _err;
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platform_set_drvdata(devptr, card);
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return 0;
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_err:
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snd_card_free(card);
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return err;
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}
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static int __devexit snd_sgalaxy_remove(struct platform_device *devptr)
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{
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snd_card_free(platform_get_drvdata(devptr));
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platform_set_drvdata(devptr, NULL);
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return 0;
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}
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#ifdef CONFIG_PM
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static int snd_sgalaxy_suspend(struct platform_device *pdev, pm_message_t state)
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{
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struct snd_card *card = platform_get_drvdata(pdev);
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struct snd_ad1848 *chip = card->private_data;
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snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
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chip->suspend(chip);
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return 0;
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}
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static int snd_sgalaxy_resume(struct platform_device *pdev)
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{
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struct snd_card *card = platform_get_drvdata(pdev);
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struct snd_ad1848 *chip = card->private_data;
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chip->resume(chip);
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snd_ad1848_out(chip, SGALAXY_AUXC_LEFT, chip->image[SGALAXY_AUXC_LEFT]);
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snd_ad1848_out(chip, SGALAXY_AUXC_RIGHT, chip->image[SGALAXY_AUXC_RIGHT]);
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snd_power_change_state(card, SNDRV_CTL_POWER_D0);
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return 0;
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}
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#endif
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#define SND_SGALAXY_DRIVER "snd_sgalaxy"
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static struct platform_driver snd_sgalaxy_driver = {
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.probe = snd_sgalaxy_probe,
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.remove = __devexit_p(snd_sgalaxy_remove),
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#ifdef CONFIG_PM
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.suspend = snd_sgalaxy_suspend,
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.resume = snd_sgalaxy_resume,
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#endif
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.driver = {
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.name = SND_SGALAXY_DRIVER
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},
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};
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static void __init_or_module snd_sgalaxy_unregister_all(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(devices); ++i)
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platform_device_unregister(devices[i]);
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platform_driver_unregister(&snd_sgalaxy_driver);
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}
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static int __init alsa_card_sgalaxy_init(void)
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{
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int i, cards, err;
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err = platform_driver_register(&snd_sgalaxy_driver);
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if (err < 0)
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return err;
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cards = 0;
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for (i = 0; i < SNDRV_CARDS; i++) {
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struct platform_device *device;
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if (! enable[i])
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continue;
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device = platform_device_register_simple(SND_SGALAXY_DRIVER,
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i, NULL, 0);
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if (IS_ERR(device))
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continue;
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if (!platform_get_drvdata(device)) {
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platform_device_unregister(device);
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continue;
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}
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devices[i] = device;
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cards++;
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}
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if (!cards) {
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#ifdef MODULE
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snd_printk(KERN_ERR "Sound Galaxy soundcard not found or device busy\n");
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#endif
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snd_sgalaxy_unregister_all();
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return -ENODEV;
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}
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return 0;
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}
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static void __exit alsa_card_sgalaxy_exit(void)
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{
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snd_sgalaxy_unregister_all();
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}
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module_init(alsa_card_sgalaxy_init)
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module_exit(alsa_card_sgalaxy_exit)
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