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ALSA: tea575x: unify read/write functions

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Implement generic read/write functions to access TEA575x tuners. They're now
implemented 4 times (once in es1968 and 3 times in fm801).
This also allows mute to work on all cards.
Also improve tuner detection/initialization.

Signed-off-by: Ondrej Zary <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Ondrej Zary 2011-05-09 23:39:26 +02:00 • committed by Takashi Iwai
commit 14219d0659
2 changed files with 81 additions and 30 deletions
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13
include/sound/tea575x-tuner.h
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@ -26,12 +26,17 @@
#include <media/v4l2-dev.h>
#include <media/v4l2-ioctl.h>
#define TEA575X_DATA (1 << 0)
#define TEA575X_CLK (1 << 1)
#define TEA575X_WREN (1 << 2)
#define TEA575X_MOST (1 << 3)
struct snd_tea575x;
struct snd_tea575x_ops {
void (*write)(struct snd_tea575x *tea, unsigned int val);
unsigned int (*read)(struct snd_tea575x *tea);
void (*mute)(struct snd_tea575x *tea, unsigned int mute);
void (*set_pins)(struct snd_tea575x *tea, u8 pins);
u8 (*get_pins)(struct snd_tea575x *tea);
void (*set_direction)(struct snd_tea575x *tea, bool output);
};
struct snd_tea575x {
@ -49,7 +54,7 @@ struct snd_tea575x {
void *private_data;
};
void snd_tea575x_init(struct snd_tea575x *tea);
int snd_tea575x_init(struct snd_tea575x *tea);
void snd_tea575x_exit(struct snd_tea575x *tea);
#endif /* __SOUND_TEA575X_TUNER_H */