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/**
* @file
* @ingroup lm32_milkymist_ac97 lm32_milkymist_shared
* @brief Milkymist AC97 driver
*/
/* milkymist_ac97.h
*
* Milkymist AC97 driver for RTEMS
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*
* COPYRIGHT (c) 2010 Sebastien Bourdeauducq
*/
/**
* @defgroup lm32_milkymist_ac97 Milkymist AC97
* @ingroup lm32_milkymist_shared
* @brief Milkymist AC97 driver
* @{
*/
#ifndef __MILKYMIST_AC97_H_
#define __MILKYMIST_AC97_H_
#ifdef __cplusplus
extern "C" {
#endif
/* Ioctls. 0x41 is 'A' */
#define SOUND_MIXER_MIC 0x0
#define SOUND_MIXER_LINE 0x1
#define SOUND_MIXER_READ(x) (0x4100+x)
#define SOUND_MIXER_WRITE(x) (0x4110+x)
#define SOUND_SND_SUBMIT_PLAY 0x4120
#define SOUND_SND_COLLECT_PLAY 0x4121
#define SOUND_SND_SUBMIT_RECORD 0x4122
#define SOUND_SND_COLLECT_RECORD 0x4123
struct snd_buffer {
unsigned int nsamples;
void *user;
unsigned int samples[];
};
rtems_device_driver ac97_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
);
rtems_device_driver ac97_open(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
);
rtems_device_driver ac97_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
);
#define AC97_DRIVER_TABLE_ENTRY {ac97_initialize, \
ac97_open, NULL, NULL, NULL, ac97_control}
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* __MILKYMIST_AC97_H_ */
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