[media] radio: Add Sanyo LM7000 tuner driver

Add very simple driver for Sanyo LM7000 AM/FM tuner chip. Only FM is supported
as there is no known HW with AM implemented.

This will be used by radio-aimslab and radio-sf16fmi.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/drivers/media/radio/lm7000.h b/drivers/media/radio/lm7000.h
new file mode 100644
index 0000000..a5bc7d6
--- /dev/null
+++ b/drivers/media/radio/lm7000.h
@@ -0,0 +1,32 @@
+#ifndef __LM7000_H
+#define __LM7000_H
+
+#define LM7000_DATA	(1 << 0)
+#define LM7000_CLK	(1 << 1)
+#define LM7000_CE	(1 << 2)
+
+#define LM7000_FREQ_MASK 0x3fff
+#define LM7000_BIT_T0	(1 << 14)
+#define LM7000_BIT_T1	(1 << 15)
+#define LM7000_BIT_B0	(1 << 16)
+#define LM7000_BIT_B1	(1 << 17)
+#define LM7000_BIT_B2	(1 << 18)
+#define LM7000_BIT_TB	(1 << 19)
+#define LM7000_FM_100	(0 << 20)
+#define LM7000_FM_50	(1 << 20)
+#define LM7000_FM_25	(2 << 20)
+#define LM7000_AM_5	(3 << 20)
+#define LM7000_AM_10	(4 << 20)
+#define LM7000_AM_9	(5 << 20)
+#define LM7000_AM_1	(6 << 20)
+#define LM7000_AM_5_	(7 << 20)
+#define LM7000_BIT_FM	(1 << 23)
+
+
+struct lm7000 {
+	void (*set_pins)(struct lm7000 *lm, u8 pins);
+};
+
+void lm7000_set_freq(struct lm7000 *lm, u32 freq);
+
+#endif /* __LM7000_H */