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Commit Graph

12 Commits

Author SHA1 Message Date
Peter Meerwald
89ca79afe5 iio:adc:ad799x: Add helper function to read/write config register
16-bit on ad7997/ad7998, 8-bit elsewhere

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:57:09 +01:00
Peter Meerwald
ef0bf6f82d iio:adc:ad799x: Make chan_spec const in ad799x_chip_config struct
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:56:49 +01:00
Peter Meerwald
91556c6939 iio:adc:ad799x: Only expose event interface when IRQ is available
an IRQ is necessary to handle the ALERT condition; without
IRQ, the IIO event interface serves no purpose

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:56:14 +01:00
Peter Meerwald
e1c6e2a217 iio:adc:ad799x: Use BIT() and GENMASK()
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:55:42 +01:00
Peter Meerwald
bd3bd4328a iio:adc:ad799x: Save some lines in ad7997_8_update_scan_mode() exit handling
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:48:43 +01:00
Peter Meerwald
541544712e iio:adc:ad799x: Drop I2C access helper functions
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:46:54 +01:00
Greg Kroah-Hartman
c1a567d31b Merge 3.16-rc4 into staging-next
We want the staging tree fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-07 17:59:07 -07:00
Peter Meerwald
361d795002 iio:adc:ad799x: Fix reading and writing of event values, apply shift
last two bits of ADC and limit values are zero and should not be reported
(ad7993, ad7997); compare with read_raw()

event values are 10 (ad7993, ad7997) or 12 bit max., check the range on write

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Stable@vger.kernel.org
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-21 10:43:13 +01:00
Peter Meerwald
a3eeb1591a iio:adc:ad799x: Fix ad799x_chip_info kerneldoc
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 15:20:58 +01:00
Dan Carpenter
82a5803c78 staging: iio: ad799x: remove some unneeded IS_ERR() checks
My static checker is upset that we check IS_ERR(t->reg) when we know it
is not an ERR_PTR.

Checking for IS_ERR() twice is often a sign of confusion and buggy code.
In this case, if the call to "ret = regulator_enable(st->vref);" fails,
then we call "regulator_disable(st->vref);" and that's a mistake because
"st->vref" is not enabled.

I fixed these problems and Hartmut Knaack pointed out a couple unneeded
IS_ERR() checks in ad799x_remove() so I have removed those as well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-03 11:14:01 +01:00
Masanari Iida
e3c5be2bda staging: iio: Fix typo in iio
Correct spelling typo in comment within staging/iio

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-04-23 21:44:41 +01:00
Lars-Peter Clausen
bd75afaa31 staging:iio: Move ad799x driver out of staging
The driver is now at a reasonable quality level. Move it out of staging.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-03-16 18:00:34 +00:00