diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_uac1.c')
| -rw-r--r-- | drivers/usb/gadget/function/u_uac1.c | 38 |
1 files changed, 13 insertions, 25 deletions
diff --git a/drivers/usb/gadget/function/u_uac1.c b/drivers/usb/gadget/function/u_uac1.c index 7a55fea43430..a44a07f30281 100644 --- a/drivers/usb/gadget/function/u_uac1.c +++ b/drivers/usb/gadget/function/u_uac1.c @@ -10,6 +10,7 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/slab.h> #include <linux/device.h> #include <linux/delay.h> @@ -23,22 +24,6 @@ * This component encapsulates the ALSA devices for USB audio gadget */ -#define FILE_PCM_PLAYBACK "/dev/snd/pcmC0D0p" -#define FILE_PCM_CAPTURE "/dev/snd/pcmC0D0c" -#define FILE_CONTROL "/dev/snd/controlC0" - -static char *fn_play = FILE_PCM_PLAYBACK; -module_param(fn_play, charp, S_IRUGO); -MODULE_PARM_DESC(fn_play, "Playback PCM device file name"); - -static char *fn_cap = FILE_PCM_CAPTURE; -module_param(fn_cap, charp, S_IRUGO); -MODULE_PARM_DESC(fn_cap, "Capture PCM device file name"); - -static char *fn_cntl = FILE_CONTROL; -module_param(fn_cntl, charp, S_IRUGO); -MODULE_PARM_DESC(fn_cntl, "Control device file name"); - /*-------------------------------------------------------------------------*/ /** @@ -167,7 +152,7 @@ static int playback_default_hw_params(struct gaudio_snd_dev *snd) /** * Playback audio buffer data by ALSA PCM device */ -static size_t u_audio_playback(struct gaudio *card, void *buf, size_t count) +size_t u_audio_playback(struct gaudio *card, void *buf, size_t count) { struct gaudio_snd_dev *snd = &card->playback; struct snd_pcm_substream *substream = snd->substream; @@ -202,12 +187,12 @@ try_again: return 0; } -static int u_audio_get_playback_channels(struct gaudio *card) +int u_audio_get_playback_channels(struct gaudio *card) { return card->playback.channels; } -static int u_audio_get_playback_rate(struct gaudio *card) +int u_audio_get_playback_rate(struct gaudio *card) { return card->playback.rate; } @@ -220,6 +205,13 @@ static int gaudio_open_snd_dev(struct gaudio *card) { struct snd_pcm_file *pcm_file; struct gaudio_snd_dev *snd; + struct f_uac1_opts *opts; + char *fn_play, *fn_cap, *fn_cntl; + + opts = container_of(card->func.fi, struct f_uac1_opts, func_inst); + fn_play = opts->fn_play; + fn_cap = opts->fn_cap; + fn_cntl = opts->fn_cntl; if (!card) return -ENODEV; @@ -293,7 +285,6 @@ static int gaudio_close_snd_dev(struct gaudio *gau) return 0; } -static struct gaudio *the_card; /** * gaudio_setup - setup ALSA interface and preparing for USB transfer * @@ -301,15 +292,13 @@ static struct gaudio *the_card; * * Returns negative errno, or zero on success */ -int __init gaudio_setup(struct gaudio *card) +int gaudio_setup(struct gaudio *card) { int ret; ret = gaudio_open_snd_dev(card); if (ret) ERROR(card, "we need at least one control device\n"); - else if (!the_card) - the_card = card; return ret; @@ -320,11 +309,10 @@ int __init gaudio_setup(struct gaudio *card) * * This is called to free all resources allocated by @gaudio_setup(). */ -void gaudio_cleanup(void) +void gaudio_cleanup(struct gaudio *the_card) { if (the_card) { gaudio_close_snd_dev(the_card); - the_card = NULL; } } |