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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 06:03:41 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 06:03:41 +0400
commit6df419e45d71b8d9a0de8e92a1212bbea460f0e0 (patch)
treec0902a96353391400818fe8b7adf11493b56935a /drivers/media/radio/lm7000.h
parent27c1ee3f929555b71fa39ec0d81a7e7185de1b16 (diff)
parentc893e7c64e36087dceb4662917976a81d1754fc0 (diff)
downloadlinux-6df419e45d71b8d9a0de8e92a1212bbea460f0e0.tar.xz
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: "This is the first part of the media patches for v3.6. This patch series contain: - new DVB frontend: rtl2832 - new video drivers: adv7393 - some unused files got removed - a selection API cleanup between V4L2 and V4L2 subdev API's - a major redesign at v4l-ioctl2, in order to clean it up - several driver fixes and improvements." * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (174 commits) v4l: Export v4l2-common.h in include/linux/Kbuild media: Revert "[media] Terratec Cinergy S2 USB HD Rev.2" [media] media: Use pr_info not homegrown pr_reg macro [media] Terratec Cinergy S2 USB HD Rev.2 [media] v4l: Correct conflicting V4L2 subdev selection API documentation [media] Feature removal: V4L2 selections API target and flag definitions [media] v4l: Unify selection flags documentation [media] v4l: Unify selection flags [media] v4l: Common documentation for selection targets [media] v4l: Unify selection targets across V4L2 and V4L2 subdev interfaces [media] v4l: Remove "_ACTUAL" from subdev selection API target definition names [media] V4L: Remove "_ACTIVE" from the selection target name definitions [media] media: dvb-usb: print mac address via native %pM [media] s5p-tv: Use module_i2c_driver in sii9234_drv.c file [media] media: gpio-ir-recv: add allowed_protos for platform data [media] s5p-jpeg: Use module_platform_driver in jpeg-core.c file [media] saa7134: fix spelling of detach in label [media] cx88-blackbird: replace ioctl by unlocked_ioctl [media] cx88: don't use current_norm [media] cx88: fix a number of v4l2-compliance violations ...
Diffstat (limited to 'drivers/media/radio/lm7000.h')
-rw-r--r--drivers/media/radio/lm7000.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/media/radio/lm7000.h b/drivers/media/radio/lm7000.h
new file mode 100644
index 000000000000..139cd6b68824
--- /dev/null
+++ b/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 */