diff options
Diffstat (limited to 'sound/pci/hda/hda_controller.h')
| -rw-r--r-- | sound/pci/hda/hda_controller.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h new file mode 100644 index 000000000000..a62cdde93a2b --- /dev/null +++ b/sound/pci/hda/hda_controller.h @@ -0,0 +1,57 @@ +/* + * Common functionality for the alsa driver code base for HD Audio. + * + * 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. + */ + +#ifndef __SOUND_HDA_CONTROLLER_H +#define __SOUND_HDA_CONTROLLER_H + +#include <sound/core.h> +#include <sound/initval.h> +#include "hda_codec.h" +#include "hda_priv.h" + +/* PCM setup */ +int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec, + struct hda_pcm *cpcm); +static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream) +{ + return substream->runtime->private_data; +} +unsigned int azx_get_position(struct azx *chip, + struct azx_dev *azx_dev, + bool with_check); + +/* Stream control. */ +void azx_stream_start(struct azx *chip, struct azx_dev *azx_dev); +void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev); +void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev); +int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev); +int setup_bdle(struct azx *chip, + struct snd_dma_buffer *dmab, + struct azx_dev *azx_dev, u32 **bdlp, + int ofs, int size, int with_ioc); + +/* DSP lock helpers */ +#ifdef CONFIG_SND_HDA_DSP_LOADER +#define dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex) +#define dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex) +#define dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex) +#define dsp_is_locked(dev) ((dev)->locked) +#else +#define dsp_lock_init(dev) do {} while (0) +#define dsp_lock(dev) do {} while (0) +#define dsp_unlock(dev) do {} while (0) +#define dsp_is_locked(dev) 0 +#endif + +#endif /* __SOUND_HDA_CONTROLLER_H */ |
