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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>
201 lines
5.7 KiB
C
201 lines
5.7 KiB
C
/*
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* Generic driver for CS4231 chips
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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* Originally the CS4232/CS4232A driver, modified for use on CS4231 by
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* Tugrul Galatali <galatalt@stuy.edu>
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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/mpu401.h>
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#include <sound/initval.h>
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#define CRD_NAME "Generic CS4231"
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#define DEV_NAME "cs4231"
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MODULE_DESCRIPTION(CRD_NAME);
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Crystal Semiconductors,CS4231}}");
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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 long mpu_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 mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 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 int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
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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(mpu_port, long, NULL, 0444);
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MODULE_PARM_DESC(mpu_port, "MPU-401 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(mpu_irq, int, NULL, 0444);
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MODULE_PARM_DESC(mpu_irq, "MPU-401 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(dma2, int, NULL, 0444);
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MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
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static int snd_cs4231_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_cs4231_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], dma2[n],
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WSS_HW_DETECT, 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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strcpy(card->driver, "CS4231");
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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 (dma2[n] >= 0)
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sprintf(card->longname + strlen(card->longname), "&%d", dma2[n]);
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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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error = snd_wss_timer(chip, 0);
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if (error < 0)
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goto out;
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if (mpu_port[n] > 0 && mpu_port[n] != SNDRV_AUTO_PORT) {
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if (mpu_irq[n] == SNDRV_AUTO_IRQ)
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mpu_irq[n] = -1;
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if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
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mpu_port[n], 0, mpu_irq[n],
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NULL) < 0)
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dev_warn(dev, "MPU401 not detected\n");
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}
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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_cs4231_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_cs4231_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_cs4231_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_cs4231_driver = {
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.match = snd_cs4231_match,
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.probe = snd_cs4231_probe,
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.remove = snd_cs4231_remove,
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#ifdef CONFIG_PM
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.suspend = snd_cs4231_suspend,
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.resume = snd_cs4231_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_cs4231_init(void)
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{
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return isa_register_driver(&snd_cs4231_driver, SNDRV_CARDS);
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}
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static void __exit alsa_card_cs4231_exit(void)
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{
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isa_unregister_driver(&snd_cs4231_driver);
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}
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module_init(alsa_card_cs4231_init);
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module_exit(alsa_card_cs4231_exit);
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