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author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/staging/iio/adc/ad7780.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/staging/iio/adc/ad7780.h')
-rw-r--r-- | kernel/drivers/staging/iio/adc/ad7780.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/kernel/drivers/staging/iio/adc/ad7780.h b/kernel/drivers/staging/iio/adc/ad7780.h new file mode 100644 index 000000000..67e511c3d --- /dev/null +++ b/kernel/drivers/staging/iio/adc/ad7780.h @@ -0,0 +1,30 @@ +/* + * AD7780/AD7781 SPI ADC driver + * + * Copyright 2011 Analog Devices Inc. + * + * Licensed under the GPL-2. + */ +#ifndef IIO_ADC_AD7780_H_ +#define IIO_ADC_AD7780_H_ + +/* + * TODO: struct ad7780_platform_data needs to go into include/linux/iio + */ + +/* NOTE: + * The AD7780 doesn't feature a dedicated SPI chip select, in addition it + * features a dual use data out ready DOUT/RDY output. + * In order to avoid contentions on the SPI bus, it's therefore necessary + * to use spi bus locking combined with a dedicated GPIO to control the + * power down reset signal of the AD7780. + * + * The DOUT/RDY output must also be wired to an interrupt capable GPIO. + */ + +struct ad7780_platform_data { + u16 vref_mv; + int gpio_pdrst; +}; + +#endif /* IIO_ADC_AD7780_H_ */ |