[PATCH v4] iio: adc: vf610: Add IIO buffer support for Vybrid ADC

[Duan Andy]

From: Sanchayan Maity <maitysanchayan at gmail.com> Sent: Monday, August 17, 2015 11:52 PM
> To: jic23 at kernel.org; linux-iio at vger.kernel.org
> Cc: stefan at agner.ch; Duan Fugang-B38611; pmeerw at pmeerw.net; linux-
> kernel at vger.kernel.org; linux-arm-kernel at lists.infradead.org; Sanchayan
> Maity
> Subject: [PATCH v4] iio: adc: vf610: Add IIO buffer support for Vybrid
> ADC
> 
> This patch adds support for IIO buffer to the Vybrid ADC driver.
> IIO triggered buffer infrastructure along with iio sysfs trigger is used
> to leverage continuous sampling support provided by the ADC block.
> 
> Signed-off-by: Sanchayan Maity <maitysanchayan at gmail.com>
> ---
> 
> Changes since v3:
> Fix iio_buffer_setup_ops for postenable and predisable functions to match
> pairwise. Before this the predisable work was being done in postdisable.
> 
> Changes since v2:
> 1. Fix the wrong buffer size for statically allocated buffer 2. Drop the
> use of .address field from the iio_chan_spec 3. Use iio_buffer_enabled
> call inside the lock 4. Drop wrapper function around iio_trigered_*
> function calls 5. Drop Kconfig select of sysfs trigger 6. Drop Kconfig
> select IIO_TRIGGER as it is already selected by IIO_TRIGGERED_BUFFER
> 
> Changes since v1:
> 1. Use a fixed size buffer instead of kmalloc allocated during update
> scan mode 2. Remove a write to read only register ADC_HS (COCO bit)
> 
>  drivers/iio/adc/Kconfig     |   2 +
>  drivers/iio/adc/vf610_adc.c | 105
> +++++++++++++++++++++++++++++++++++++++++---
>  2 files changed, 100 insertions(+), 7 deletions(-)
> 

The version is fine for me. Thanks for your effort.

Acked-by: Fugang Duan <B38611 at freescale.com>