From 5ccb3adbd7593b69d1355454b0c6d2dffdad51d9 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 15 Apr 2012 17:41:16 +0100 Subject: [PATCH] staging:iio: add a raw and processed elements to info_mask This will allow us to have drivers where the channel value may not be read or written but other information is available. Also adds the ability to have both processed and raw access to a given channel, though in most cases this doesn't make sense. Ultimately will lead to simpler code by allowing us to drop the special case handling for the value reading cases. Signed-off-by: Jonathan Cameron Acked-by: Lars-Peter Clausen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/iio.h | 9 +++++++-- drivers/staging/iio/industrialio-core.c | 5 +++-- 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h index b07ddd36ca42..dda16028df13 100644 --- a/drivers/staging/iio/iio.h +++ b/drivers/staging/iio/iio.h @@ -26,8 +26,9 @@ enum iio_data_type { /* Could add the raw attributes as well - allowing buffer only devices */ enum iio_chan_info_enum { - /* 0 is reserved for raw attributes */ - IIO_CHAN_INFO_SCALE = 1, + IIO_CHAN_INFO_RAW = 0, + IIO_CHAN_INFO_PROCESSED, + IIO_CHAN_INFO_SCALE, IIO_CHAN_INFO_OFFSET, IIO_CHAN_INFO_CALIBSCALE, IIO_CHAN_INFO_CALIBBIAS, @@ -42,6 +43,10 @@ enum iio_chan_info_enum { #define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2) #define IIO_CHAN_INFO_SEPARATE_BIT(type) BIT(type*2 + 1) +#define IIO_CHAN_INFO_RAW_SEPARATE_BIT \ + IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_RAW) +#define IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT \ + IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PROCESSED) #define IIO_CHAN_INFO_SCALE_SEPARATE_BIT \ IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_SCALE) #define IIO_CHAN_INFO_SCALE_SHARED_BIT \ diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c index 9e42713e5f55..817e3fa7a9db 100644 --- a/drivers/staging/iio/industrialio-core.c +++ b/drivers/staging/iio/industrialio-core.c @@ -576,7 +576,8 @@ error_ret: static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, struct iio_chan_spec const *chan) { - int ret, i, attrcount = 0; + int ret, attrcount = 0; + int i = 4; const struct iio_chan_spec_ext_info *ext_info; if (chan->channel < 0) @@ -595,7 +596,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, goto error_ret; attrcount++; - for_each_set_bit(i, &chan->info_mask, sizeof(long)*8) { + for_each_set_bit_from(i, &chan->info_mask, sizeof(long)*8) { ret = __iio_add_chan_devattr(iio_chan_info_postfix[i/2], chan, &iio_read_channel_info, -- 2.39.5