diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/media/radio/lm7000.h | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/media/radio/lm7000.h')
| -rw-r--r-- | kernel/drivers/media/radio/lm7000.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/kernel/drivers/media/radio/lm7000.h b/kernel/drivers/media/radio/lm7000.h new file mode 100644 index 000000000..139cd6b68 --- /dev/null +++ b/kernel/drivers/media/radio/lm7000.h @@ -0,0 +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_FM_100 (0 << 20) +#define LM7000_FM_50 (1 << 20) +#define LM7000_FM_25 (2 << 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; + + 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 */ |