Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...

[~andy/linux] / drivers / media / radio / lm7000.h

diff --git a/drivers/media/radio/lm7000.h b/drivers/media/radio/lm7000.h
index a5bc7d632f1d0d6dd89d7919be1af8b4a96e11f8..139cd6b68824838378921bbbca03810a1e073e8e 100644 (file)
--- a/drivers/media/radio/lm7000.h
+++ b/drivers/media/radio/lm7000.h
@@ -1,32 +1,43 @@
 #ifndef __LM7000_H
 #define __LM7000_H
 
+/* Sanyo LM7000 tuner chip control
+ *
+ * Copyright 2012 Ondrej Zary <linux@rainbow-software.org>
+ * based on radio-aimslab.c by M. Kirkwood
+ * and radio-sf16fmi.c by M. Kirkwood and Petr Vandrovec
+ */
+
 #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)
 
+static inline void lm7000_set_freq(u32 freq, void *handle,
+                               void (*set_pins)(void *handle, u8 pins))
+{
+       int i;
+       u8 data;
+       u32 val;
 
-struct lm7000 {
-       void (*set_pins)(struct lm7000 *lm, u8 pins);
-};
-
-void lm7000_set_freq(struct lm7000 *lm, u32 freq);
+       freq += 171200;         /* Add 10.7 MHz IF */
+       freq /= 400;            /* Convert to 25 kHz units */
+       val = freq | LM7000_FM_25 | LM7000_BIT_FM;
+       /* write the 24-bit register, starting with LSB */
+       for (i = 0; i < 24; i++) {
+               data = val & (1 << i) ? LM7000_DATA : 0;
+               set_pins(handle, data | LM7000_CE);
+               udelay(2);
+               set_pins(handle, data | LM7000_CE | LM7000_CLK);
+               udelay(2);
+               set_pins(handle, data | LM7000_CE);
+               udelay(2);
+       }
+       set_pins(handle, 0);
+}
 
 #endif /* __LM7000_H */