diff options
Diffstat (limited to 'linux/drivers/media/video/cx88/cx88-alsa.c')
| -rw-r--r-- | linux/drivers/media/video/cx88/cx88-alsa.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/linux/drivers/media/video/cx88/cx88-alsa.c b/linux/drivers/media/video/cx88/cx88-alsa.c new file mode 100644 index 000000000..e54fd1f23 --- /dev/null +++ b/linux/drivers/media/video/cx88/cx88-alsa.c @@ -0,0 +1,159 @@ +/* + * $Id: cx88-alsa.c,v 1.1 2004/07/29 21:35:48 kraxel Exp $ + * + * Support for audio capture + * PCI function #1 of the cx2388x. + * + * (c) 2004 Gerd Knorr <kraxel@bytesex.org> + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/interrupt.h> +#include <asm/delay.h> + +#include "cx88.h" + +/* ------------------------------------------------------------------ */ + +MODULE_DESCRIPTION("alsa driver module for cx2388x based TV cards"); +MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]"); +MODULE_LICENSE("GPL"); + +/* ------------------------------------------------------------------ */ + +static int __devinit cx8801_initdev(struct pci_dev *pci_dev, + const struct pci_device_id *pci_id) +{ + struct cx8801_dev *dev; + struct cx88_core *core; + int err; + + dev = kmalloc(sizeof(*dev),GFP_KERNEL); + if (NULL == dev) + return -ENOMEM; + memset(dev,0,sizeof(*dev)); + + /* pci init */ + dev->pci = pci_dev; + if (pci_enable_device(pci_dev)) { + err = -EIO; + goto fail_free; + } + core = cx88_core_get(dev->pci); + if (NULL == core) { + err = -EINVAL; + goto fail_free; + } + dev->core = core; + + /* print pci info */ + pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev); + pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &dev->pci_lat); + printk(KERN_INFO "%s/1: found at %s, rev: %d, irq: %d, " + "latency: %d, mmio: 0x%lx\n", core->name, + pci_name(pci_dev), dev->pci_rev, pci_dev->irq, + dev->pci_lat,pci_resource_start(pci_dev,0)); + + pci_set_master(pci_dev); + if (!pci_dma_supported(pci_dev,0xffffffff)) { + printk("%s/1: Oops: no 32bit PCI DMA ???\n",core->name); + err = -EIO; + goto fail_core; + } + + printk("%s/1: alsa dummy module loaded\n",core->name); + pci_set_drvdata(pci_dev,dev); + return 0; + + fail_core: + cx88_core_put(core,dev->pci); + fail_free: + kfree(dev); + return err; +} + +static void __devexit cx8801_finidev(struct pci_dev *pci_dev) +{ + struct cx8801_dev *dev = pci_get_drvdata(pci_dev); + + pci_disable_device(pci_dev); + + /* unregister stuff */ + pci_set_drvdata(pci_dev, NULL); + + /* free memory */ + cx88_core_put(dev->core,dev->pci); + kfree(dev); +} + +struct pci_device_id cx8801_pci_tbl[] = { + { + .vendor = 0x14f1, + .device = 0x8801, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + },{ + .vendor = 0x14f1, + .device = 0x8811, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + },{ + /* --- end of list --- */ + } +}; +MODULE_DEVICE_TABLE(pci, cx8801_pci_tbl); + +static struct pci_driver cx8801_pci_driver = { + .name = "cx8801", + .id_table = cx8801_pci_tbl, + .probe = cx8801_initdev, + .remove = cx8801_finidev, +#if 0 + .suspend = cx8801_suspend, + .resume = cx8801_resume, +#endif +}; + +static int cx8801_init(void) +{ + printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n", + (CX88_VERSION_CODE >> 16) & 0xff, + (CX88_VERSION_CODE >> 8) & 0xff, + CX88_VERSION_CODE & 0xff); +#ifdef SNAPSHOT + printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n", + SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100); +#endif + return pci_module_init(&cx8801_pci_driver); +} + +static void cx8801_fini(void) +{ + pci_unregister_driver(&cx8801_pci_driver); +} + +module_init(cx8801_init); +module_exit(cx8801_fini); + +/* ----------------------------------------------------------- */ +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ |