1 /* 2 * Common functionality for the alsa driver code base for HD Audio. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the Free 6 * Software Foundation; either version 2 of the License, or (at your option) 7 * any later version. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 */ 14 15 #ifndef __SOUND_HDA_CONTROLLER_H 16 #define __SOUND_HDA_CONTROLLER_H 17 18 #include <sound/core.h> 19 #include <sound/initval.h> 20 #include "hda_codec.h" 21 #include "hda_priv.h" 22 23 /* PCM setup */ 24 static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream) 25 { 26 return substream->runtime->private_data; 27 } 28 unsigned int azx_get_position(struct azx *chip, 29 struct azx_dev *azx_dev, 30 bool with_check); 31 32 /* Stream control. */ 33 void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev); 34 35 /* Allocation functions. */ 36 int azx_alloc_stream_pages(struct azx *chip); 37 void azx_free_stream_pages(struct azx *chip); 38 39 /* Low level azx interface */ 40 void azx_init_chip(struct azx *chip, bool full_reset); 41 void azx_stop_chip(struct azx *chip); 42 void azx_enter_link_reset(struct azx *chip); 43 irqreturn_t azx_interrupt(int irq, void *dev_id); 44 45 /* Codec interface */ 46 int azx_codec_create(struct azx *chip, const char *model, 47 unsigned int max_slots, 48 int *power_save_to); 49 int azx_codec_configure(struct azx *chip); 50 int azx_mixer_create(struct azx *chip); 51 int azx_init_stream(struct azx *chip); 52 53 #endif /* __SOUND_HDA_CONTROLLER_H */ 54