diff options
Diffstat (limited to 'kernel/sound/isa/ad1848/ad1848.c')
| -rw-r--r-- | kernel/sound/isa/ad1848/ad1848.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/kernel/sound/isa/ad1848/ad1848.c b/kernel/sound/isa/ad1848/ad1848.c new file mode 100644 index 000000000..f159da4ec --- /dev/null +++ b/kernel/sound/isa/ad1848/ad1848.c @@ -0,0 +1,184 @@ +/* + * Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha) + * Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>, + * Jaroslav Kysela <perex@perex.cz> + * Based on card-4232.c by Jaroslav Kysela <perex@perex.cz> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/init.h> +#include <linux/err.h> +#include <linux/isa.h> +#include <linux/time.h> +#include <linux/wait.h> +#include <linux/module.h> +#include <sound/core.h> +#include <sound/wss.h> +#include <sound/initval.h> + +#define CRD_NAME "Generic AD1848/AD1847/CS4248" +#define DEV_NAME "ad1848" + +MODULE_DESCRIPTION(CRD_NAME); +MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848}," + "{Analog Devices,AD1847}," + "{Crystal Semiconductors,CS4248}}"); + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ +static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ +static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */ +static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */ +static bool thinkpad[SNDRV_CARDS]; /* Thinkpad special case */ + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard."); +module_param_array(port, long, NULL, 0444); +MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver."); +module_param_array(irq, int, NULL, 0444); +MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver."); +module_param_array(dma1, int, NULL, 0444); +MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver."); +module_param_array(thinkpad, bool, NULL, 0444); +MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series."); + +static int snd_ad1848_match(struct device *dev, unsigned int n) +{ + if (!enable[n]) + return 0; + + if (port[n] == SNDRV_AUTO_PORT) { + dev_err(dev, "please specify port\n"); + return 0; + } + if (irq[n] == SNDRV_AUTO_IRQ) { + dev_err(dev, "please specify irq\n"); + return 0; + } + if (dma1[n] == SNDRV_AUTO_DMA) { + dev_err(dev, "please specify dma1\n"); + return 0; + } + return 1; +} + +static int snd_ad1848_probe(struct device *dev, unsigned int n) +{ + struct snd_card *card; + struct snd_wss *chip; + int error; + + error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card); + if (error < 0) + return error; + + error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1, + thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT, + 0, &chip); + if (error < 0) + goto out; + + card->private_data = chip; + + error = snd_wss_pcm(chip, 0); + if (error < 0) + goto out; + + error = snd_wss_mixer(chip); + if (error < 0) + goto out; + + strcpy(card->driver, "AD1848"); + strcpy(card->shortname, chip->pcm->name); + + sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d", + chip->pcm->name, chip->port, irq[n], dma1[n]); + if (thinkpad[n]) + strcat(card->longname, " [Thinkpad]"); + + error = snd_card_register(card); + if (error < 0) + goto out; + + dev_set_drvdata(dev, card); + return 0; + +out: snd_card_free(card); + return error; +} + +static int snd_ad1848_remove(struct device *dev, unsigned int n) +{ + snd_card_free(dev_get_drvdata(dev)); + return 0; +} + +#ifdef CONFIG_PM +static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct snd_wss *chip = card->private_data; + + snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); + chip->suspend(chip); + return 0; +} + +static int snd_ad1848_resume(struct device *dev, unsigned int n) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct snd_wss *chip = card->private_data; + + chip->resume(chip); + snd_power_change_state(card, SNDRV_CTL_POWER_D0); + return 0; +} +#endif + +static struct isa_driver snd_ad1848_driver = { + .match = snd_ad1848_match, + .probe = snd_ad1848_probe, + .remove = snd_ad1848_remove, +#ifdef CONFIG_PM + .suspend = snd_ad1848_suspend, + .resume = snd_ad1848_resume, +#endif + .driver = { + .name = DEV_NAME + } +}; + +static int __init alsa_card_ad1848_init(void) +{ + return isa_register_driver(&snd_ad1848_driver, SNDRV_CARDS); +} + +static void __exit alsa_card_ad1848_exit(void) +{ + isa_unregister_driver(&snd_ad1848_driver); +} + +module_init(alsa_card_ad1848_init); +module_exit(alsa_card_ad1848_exit); |