linux/include/sound/pxa2xx-lib.h
Arnd Bergmann e217b085a1 Input: touchscreen: use wrapper for pxa2xx ac97 registers
To avoid a dependency on the pxa platform header files with
hardcoded registers, change the driver to call a wrapper
in the pxa2xx-ac97-lib that encapsulates all the other
ac97 stuff.

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: linux-input@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-05-07 22:55:48 +02:00

60 lines
2.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef PXA2XX_LIB_H
#define PXA2XX_LIB_H
#include <uapi/sound/asound.h>
#include <linux/platform_device.h>
/* PCM */
struct snd_pcm_substream;
struct snd_pcm_hw_params;
struct snd_soc_pcm_runtime;
struct snd_pcm;
struct snd_soc_component;
extern int pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params);
extern int pxa2xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
extern snd_pcm_uframes_t pxa2xx_pcm_pointer(struct snd_pcm_substream *substream);
extern int pxa2xx_pcm_prepare(struct snd_pcm_substream *substream);
extern int pxa2xx_pcm_open(struct snd_pcm_substream *substream);
extern int pxa2xx_pcm_close(struct snd_pcm_substream *substream);
extern int pxa2xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm);
extern int pxa2xx_soc_pcm_new(struct snd_soc_component *component,
struct snd_soc_pcm_runtime *rtd);
extern int pxa2xx_soc_pcm_open(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
extern int pxa2xx_soc_pcm_close(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
extern int pxa2xx_soc_pcm_hw_params(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params);
extern int pxa2xx_soc_pcm_prepare(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
extern int pxa2xx_soc_pcm_trigger(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int cmd);
extern snd_pcm_uframes_t
pxa2xx_soc_pcm_pointer(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
/* AC97 */
extern int pxa2xx_ac97_read(int slot, unsigned short reg);
extern int pxa2xx_ac97_write(int slot, unsigned short reg, unsigned short val);
extern bool pxa2xx_ac97_try_warm_reset(void);
extern bool pxa2xx_ac97_try_cold_reset(void);
extern void pxa2xx_ac97_finish_reset(void);
extern int pxa2xx_ac97_hw_suspend(void);
extern int pxa2xx_ac97_hw_resume(void);
extern int pxa2xx_ac97_hw_probe(struct platform_device *dev);
extern void pxa2xx_ac97_hw_remove(struct platform_device *dev);
/* modem registers, used by touchscreen driver */
u32 pxa2xx_ac97_read_modr(void);
u32 pxa2xx_ac97_read_misr(void);
#endif