fa60c06569
Most callers of snd_wss_pcm(), snd_wss_timer() and snd_cs4236_pcm() pass NULL as the last parameter, some callers pass a pointer but never use it after the function has been called and only a few callers pass a pointer and actually use it. The later is only the case for snd_wss_pcm() for snd_cs4236_pcm() and it is possible to get the same PCM object by accessing the pcm field of the snd_wss struct that was passed as the first parameter. This function removes the last parameters from the functions mentioned above and updates the callers which used it to use chip->pcm instead. This allows us to slightly simplify the functions since they don't have to check and set the last parameter anymore which makes the code slightly shorter and cleaner. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
184 lines
5.2 KiB
C
184 lines
5.2 KiB
C
/*
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* Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
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* Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
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* Jaroslav Kysela <perex@perex.cz>
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* Based on card-4232.c by Jaroslav Kysela <perex@perex.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 <linux/init.h>
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#include <linux/err.h>
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#include <linux/isa.h>
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#include <linux/time.h>
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#include <linux/wait.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/wss.h>
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#include <sound/initval.h>
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#define CRD_NAME "Generic AD1848/AD1847/CS4248"
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#define DEV_NAME "ad1848"
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MODULE_DESCRIPTION(CRD_NAME);
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MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
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"{Analog Devices,AD1847},"
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"{Crystal Semiconductors,CS4248}}");
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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 bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
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static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */
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static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
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static bool thinkpad[SNDRV_CARDS]; /* Thinkpad special case */
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
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module_param_array(port, long, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
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module_param_array(dma1, int, NULL, 0444);
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MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
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module_param_array(thinkpad, bool, NULL, 0444);
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MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
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static int snd_ad1848_match(struct device *dev, unsigned int n)
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{
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if (!enable[n])
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return 0;
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if (port[n] == SNDRV_AUTO_PORT) {
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dev_err(dev, "please specify port\n");
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return 0;
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}
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if (irq[n] == SNDRV_AUTO_IRQ) {
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dev_err(dev, "please specify irq\n");
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return 0;
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}
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if (dma1[n] == SNDRV_AUTO_DMA) {
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dev_err(dev, "please specify dma1\n");
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return 0;
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}
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return 1;
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}
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static int snd_ad1848_probe(struct device *dev, unsigned int n)
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{
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struct snd_card *card;
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struct snd_wss *chip;
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int error;
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error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
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if (error < 0)
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return error;
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error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
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thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
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0, &chip);
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if (error < 0)
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goto out;
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card->private_data = chip;
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error = snd_wss_pcm(chip, 0);
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if (error < 0)
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goto out;
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error = snd_wss_mixer(chip);
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if (error < 0)
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goto out;
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strcpy(card->driver, "AD1848");
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strcpy(card->shortname, chip->pcm->name);
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sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
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chip->pcm->name, chip->port, irq[n], dma1[n]);
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if (thinkpad[n])
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strcat(card->longname, " [Thinkpad]");
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error = snd_card_register(card);
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if (error < 0)
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goto out;
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dev_set_drvdata(dev, card);
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return 0;
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out: snd_card_free(card);
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return error;
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}
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static int snd_ad1848_remove(struct device *dev, unsigned int n)
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{
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snd_card_free(dev_get_drvdata(dev));
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return 0;
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}
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#ifdef CONFIG_PM
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static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct snd_wss *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_ad1848_resume(struct device *dev, unsigned int n)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct snd_wss *chip = card->private_data;
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chip->resume(chip);
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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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static struct isa_driver snd_ad1848_driver = {
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.match = snd_ad1848_match,
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.probe = snd_ad1848_probe,
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.remove = snd_ad1848_remove,
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#ifdef CONFIG_PM
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.suspend = snd_ad1848_suspend,
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.resume = snd_ad1848_resume,
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#endif
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.driver = {
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.name = DEV_NAME
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}
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};
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static int __init alsa_card_ad1848_init(void)
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{
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return isa_register_driver(&snd_ad1848_driver, SNDRV_CARDS);
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}
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static void __exit alsa_card_ad1848_exit(void)
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{
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isa_unregister_driver(&snd_ad1848_driver);
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}
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module_init(alsa_card_ad1848_init);
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module_exit(alsa_card_ad1848_exit);
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