ALSA: tea575x: unify read/write functions

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 <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 9 insertions, 4 deletions

diff --git a/include/sound/tea575x-tuner.h b/include/sound/tea575x-tuner.h
index 5aade569439b..e50cb2934efe 100644
--- a/include/sound/tea575x-tuner.h
+++ b/include/sound/tea575x-tuner.h
@@ -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 */