static int snd_cx18_init(struct v4l2_device *v4l2_dev)
{
struct cx18 *cx = to_cx18(v4l2_dev);
struct snd_card *sc = NULL;
struct snd_cx18_card *cxsc;
int ret;
/* Numbrs steps from "Writing an ALSA Driver" by Takashi Iwai */
/* (1) Check and increment the device index */
/* This is a no-op for us. We'll use the cx->instance */
/* (2) Create a card instance */
ret = snd_card_create(SNDRV_DEFAULT_IDX1, /* use first available id */
SNDRV_DEFAULT_STR1, /* xid from end of shortname*/
THIS_MODULE, 0, &sc);
if (ret) {
CX18_ALSA_ERR("%s: snd_card_create() failed with err %d\n",
__func__, ret);
goto err_exit;
}
/* (3) Create a main component */
ret = snd_cx18_card_create(v4l2_dev, sc, &cxsc);
if (ret) {
CX18_ALSA_ERR("%s: snd_cx18_card_create() failed with err %d\n",
__func__, ret);
goto err_exit_free;
}
/* (4) Set the driver ID and name strings */
snd_cx18_card_set_names(cxsc);
ret = snd_cx18_pcm_create(cxsc);
if (ret) {
CX18_ALSA_ERR("%s: snd_cx18_pcm_create() failed with err %d\n",
__func__, ret);
goto err_exit_free;
}
/* FIXME - proc files */
/* (7) Set the driver data and return 0 */
/* We do this out of normal order for PCI drivers to avoid races */
cx->alsa = cxsc;
/* (6) Register the card instance */
ret = snd_card_register(sc);
if (ret) {
cx->alsa = NULL;
CX18_ALSA_ERR("%s: snd_card_register() failed with err %d\n",
__func__, ret);
goto err_exit_free;
}
return 0;
err_exit_free:
if (sc != NULL)
snd_card_free(sc);
kfree(cxsc);
err_exit:
return ret;
}
static int snd_cx18_init(struct v4l2_device *v4l2_dev)
{
struct cx18 *cx = to_cx18(v4l2_dev);
struct snd_card *sc = NULL;
struct snd_cx18_card *cxsc;
int ret;
/* */
/* */
/* */
/* */
ret = snd_card_create(SNDRV_DEFAULT_IDX1, /* */
SNDRV_DEFAULT_STR1, /* */
THIS_MODULE, 0, &sc);
if (ret) {
CX18_ALSA_ERR("%s: snd_card_create() failed with err %d\n",
__func__, ret);
goto err_exit;
}
/* */
ret = snd_cx18_card_create(v4l2_dev, sc, &cxsc);
if (ret) {
CX18_ALSA_ERR("%s: snd_cx18_card_create() failed with err %d\n",
__func__, ret);
goto err_exit_free;
}
/* */
snd_cx18_card_set_names(cxsc);
ret = snd_cx18_pcm_create(cxsc);
if (ret) {
CX18_ALSA_ERR("%s: snd_cx18_pcm_create() failed with err %d\n",
__func__, ret);
goto err_exit_free;
}
/* */
/* */
/* */
cx->alsa = cxsc;
/* */
ret = snd_card_register(sc);
if (ret) {
cx->alsa = NULL;
CX18_ALSA_ERR("%s: snd_card_register() failed with err %d\n",
__func__, ret);
goto err_exit_free;
}
return 0;
err_exit_free:
if (sc != NULL)
snd_card_free(sc);
kfree(cxsc);
err_exit:
return ret;
}
