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https://github.com/torvalds/linux
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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>
282 lines
8.1 KiB
C
282 lines
8.1 KiB
C
/*
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* Driver for Gravis UltraSound Classic soundcard
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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*
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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/moduleparam.h>
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#include <asm/dma.h>
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#include <sound/core.h>
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#include <sound/gus.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("Jaroslav Kysela <perex@suse.cz>");
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MODULE_DESCRIPTION("Gravis UltraSound Classic");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}");
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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 port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x230,0x240,0x250,0x260 */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 3,5,9,11,12,15 */
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static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
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static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
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static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
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/* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
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static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
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static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for GUS Classic soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for GUS Classic soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable GUS Classic soundcard.");
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module_param_array(port, long, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for GUS Classic driver.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for GUS Classic driver.");
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module_param_array(dma1, int, NULL, 0444);
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MODULE_PARM_DESC(dma1, "DMA1 # for GUS Classic driver.");
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module_param_array(dma2, int, NULL, 0444);
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MODULE_PARM_DESC(dma2, "DMA2 # for GUS Classic driver.");
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module_param_array(joystick_dac, int, NULL, 0444);
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MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS Classic driver.");
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module_param_array(channels, int, NULL, 0444);
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MODULE_PARM_DESC(channels, "GF1 channels for GUS Classic driver.");
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module_param_array(pcm_channels, int, NULL, 0444);
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MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Classic driver.");
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static struct platform_device *devices[SNDRV_CARDS];
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#define PFX "gusclassic: "
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static int __init snd_gusclassic_detect(struct snd_gus_card * gus)
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{
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unsigned char d;
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
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if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
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snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
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return -ENODEV;
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}
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udelay(160);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */
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udelay(160);
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if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
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snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
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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 __init snd_gusclassic_init(int dev, struct snd_gus_card * gus)
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{
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gus->equal_irq = 0;
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gus->codec_flag = 0;
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gus->max_flag = 0;
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gus->joystick_dac = joystick_dac[dev];
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}
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static int __init snd_gusclassic_probe(struct platform_device *pdev)
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{
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int dev = pdev->id;
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static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
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static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
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int xirq, xdma1, xdma2;
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struct snd_card *card;
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struct snd_gus_card *gus = NULL;
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int err;
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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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if (pcm_channels[dev] < 2)
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pcm_channels[dev] = 2;
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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 DMA1\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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xdma2 = dma2[dev];
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if (xdma2 == SNDRV_AUTO_DMA) {
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if ((xdma2 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
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snd_printk(KERN_ERR PFX "unable to find a free DMA2\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 (port[dev] != SNDRV_AUTO_PORT) {
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err = snd_gus_create(card,
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port[dev],
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xirq, xdma1, xdma2,
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0, channels[dev], pcm_channels[dev],
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0, &gus);
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} else {
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/* auto-probe legacy ports */
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static unsigned long possible_ports[] = {
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0x220, 0x230, 0x240, 0x250, 0x260,
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
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err = snd_gus_create(card,
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possible_ports[i],
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xirq, xdma1, xdma2,
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0, channels[dev], pcm_channels[dev],
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0, &gus);
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if (err >= 0) {
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port[dev] = possible_ports[i];
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break;
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}
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}
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}
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if (err < 0)
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goto _err;
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if ((err = snd_gusclassic_detect(gus)) < 0)
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goto _err;
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snd_gusclassic_init(dev, gus);
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if ((err = snd_gus_initialize(gus)) < 0)
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goto _err;
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if (gus->max_flag || gus->ess_flag) {
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snd_printk(KERN_ERR PFX "GUS Classic or ACE soundcard was not detected at 0x%lx\n", gus->gf1.port);
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err = -ENODEV;
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goto _err;
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}
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if ((err = snd_gf1_new_mixer(gus)) < 0)
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goto _err;
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if ((err = snd_gf1_pcm_new(gus, 0, 0, NULL)) < 0)
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goto _err;
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if (!gus->ace_flag) {
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if ((err = snd_gf1_rawmidi_new(gus, 0, NULL)) < 0)
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goto _err;
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}
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sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %d, dma %d", gus->gf1.port, xirq, xdma1);
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if (xdma2 >= 0)
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sprintf(card->longname + strlen(card->longname), "&%d", xdma2);
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snd_card_set_dev(card, &pdev->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(pdev, 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 snd_gusclassic_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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#define GUSCLASSIC_DRIVER "snd_gusclassic"
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static struct platform_driver snd_gusclassic_driver = {
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.probe = snd_gusclassic_probe,
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.remove = snd_gusclassic_remove,
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/* FIXME: suspend/resume */
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.driver = {
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.name = GUSCLASSIC_DRIVER
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},
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};
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static void __init_or_module snd_gusclassic_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_gusclassic_driver);
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}
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static int __init alsa_card_gusclassic_init(void)
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{
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int i, cards, err;
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err = platform_driver_register(&snd_gusclassic_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(GUSCLASSIC_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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printk(KERN_ERR "GUS Classic soundcard not found or device busy\n");
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#endif
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snd_gusclassic_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_gusclassic_exit(void)
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{
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snd_gusclassic_unregister_all();
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}
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module_init(alsa_card_gusclassic_init)
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module_exit(alsa_card_gusclassic_exit)
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