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authorZubair Lutfullah <zubair.lutfullah@gmail.com>2013-09-19 07:24:00 +0100
committerJonathan Cameron <jic23@kernel.org>2013-09-21 19:23:47 +0100
commitca9a563805f7ae821e3303b1bdbc65d3a3c783ff (patch)
tree7453f8ace4421b3d23b53c5bf8c222e0a5ffbbaf /drivers/iio/adc/Kconfig
parent0f6fc7d56fe56aad5410fdaa7cebbb918580a33c (diff)
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iio: ti_am335x_adc: Add continuous sampling support
Previously the driver had only one-shot reading functionality. This patch adds continuous sampling support to the driver. Continuous sampling starts when buffer is enabled. HW IRQ wakes worker thread that pushes samples to userspace. Sampling stops when buffer is disabled by userspace. Patil Rachna (TI) laid the ground work for ADC HW register access. Russ Dill (TI) fixed bugs in the driver relevant to FIFOs and IRQs. I fixed channel scanning so multiple ADC channels can be read simultaneously and pushed to userspace. Restructured the driver to fit IIO ABI. And added INDIO_BUFFER_HARDWARE mode. Signed-off-by: Zubair Lutfullah <zubair.lutfullah@gmail.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Russ Dill <Russ.Dill@ti.com> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/adc/Kconfig')
-rw-r--r--drivers/iio/adc/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 0cf5c611b4c6..8b885188b839 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -177,6 +177,7 @@ config TI_ADC081C
config TI_AM335X_ADC
tristate "TI's AM335X ADC driver"
depends on MFD_TI_AM335X_TSCADC
+ select IIO_KFIFO_BUF
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