mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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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>
241 lines
6.8 KiB
C
241 lines
6.8 KiB
C
/*
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* Driver for generic ESS AudioDrive ESx688 soundcards
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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/time.h>
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#include <linux/wait.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/es1688.h>
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#include <sound/mpu401.h>
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#include <sound/opl3.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("ESS ESx688 AudioDrive");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{ESS,ES688 PnP AudioDrive,pnp:ESS0100},"
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"{ESS,ES1688 PnP AudioDrive,pnp:ESS0102},"
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"{ESS,ES688 AudioDrive,pnp:ESS6881},"
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"{ESS,ES1688 AudioDrive,pnp:ESS1681}}");
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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; /* 0x220,0x240,0x260 */
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static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
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static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
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static int dma8[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 ESx688 soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for ESx688 soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable ESx688 soundcard.");
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module_param_array(port, long, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for ESx688 driver.");
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module_param_array(mpu_port, long, NULL, 0444);
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MODULE_PARM_DESC(mpu_port, "MPU-401 port # for ESx688 driver.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for ESx688 driver.");
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module_param_array(mpu_irq, int, NULL, 0444);
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MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for ESx688 driver.");
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module_param_array(dma8, int, NULL, 0444);
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MODULE_PARM_DESC(dma8, "8-bit DMA # for ESx688 driver.");
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static struct platform_device *devices[SNDRV_CARDS];
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#define PFX "es1688: "
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static int __init snd_es1688_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, 9, 10, 7, -1};
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static int possible_dmas[] = {1, 3, 0, -1};
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int xirq, xdma, xmpu_irq;
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struct snd_card *card;
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struct snd_es1688 *chip;
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struct snd_opl3 *opl3;
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struct snd_pcm *pcm;
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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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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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xmpu_irq = mpu_irq[dev];
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xdma = dma8[dev];
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if (xdma == SNDRV_AUTO_DMA) {
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if ((xdma = 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 (port[dev] != SNDRV_AUTO_PORT) {
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if ((err = snd_es1688_create(card, port[dev], mpu_port[dev],
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xirq, xmpu_irq, xdma,
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ES1688_HW_AUTO, &chip)) < 0)
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goto _err;
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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, 0x240, 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_es1688_create(card, possible_ports[i],
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mpu_port[dev],
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xirq, xmpu_irq, xdma,
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ES1688_HW_AUTO, &chip);
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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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if (i >= ARRAY_SIZE(possible_ports))
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goto _err;
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}
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if ((err = snd_es1688_pcm(chip, 0, &pcm)) < 0)
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goto _err;
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if ((err = snd_es1688_mixer(chip)) < 0)
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goto _err;
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strcpy(card->driver, "ES1688");
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strcpy(card->shortname, pcm->name);
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sprintf(card->longname, "%s at 0x%lx, irq %i, dma %i", pcm->name, chip->port, xirq, xdma);
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if ((snd_opl3_create(card, chip->port, chip->port + 2, OPL3_HW_OPL3, 0, &opl3)) < 0) {
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printk(KERN_WARNING PFX "opl3 not detected at 0x%lx\n", chip->port);
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} else {
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if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
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goto _err;
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}
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if (xmpu_irq >= 0 && xmpu_irq != SNDRV_AUTO_IRQ && chip->mpu_port > 0) {
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if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES1688,
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chip->mpu_port, 0,
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xmpu_irq,
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SA_INTERRUPT,
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NULL)) < 0)
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goto _err;
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}
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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_es1688_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 ES1688_DRIVER "snd_es1688"
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static struct platform_driver snd_es1688_driver = {
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.probe = snd_es1688_probe,
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.remove = snd_es1688_remove,
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/* FIXME: suspend/resume */
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.driver = {
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.name = ES1688_DRIVER
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},
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};
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static void __init_or_module snd_es1688_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_es1688_driver);
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}
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static int __init alsa_card_es1688_init(void)
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{
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int i, cards, err;
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err = platform_driver_register(&snd_es1688_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(ES1688_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 "ESS AudioDrive ES1688 soundcard not found or device busy\n");
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#endif
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snd_es1688_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_es1688_exit(void)
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{
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snd_es1688_unregister_all();
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}
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module_init(alsa_card_es1688_init)
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module_exit(alsa_card_es1688_exit)
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