diff options
Diffstat (limited to 'drivers/staging/iio/Documentation/iio_utils.h')
| -rw-r--r-- | drivers/staging/iio/Documentation/iio_utils.h | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/staging/iio/Documentation/iio_utils.h b/drivers/staging/iio/Documentation/iio_utils.h index 75938b2412f..6f3a392297e 100644 --- a/drivers/staging/iio/Documentation/iio_utils.h +++ b/drivers/staging/iio/Documentation/iio_utils.h @@ -13,6 +13,7 @@ #include <ctype.h> #include <stdio.h> #include <stdint.h> +#include <dirent.h> #define IIO_MAX_NAME_LENGTH 30 @@ -73,6 +74,7 @@ struct iio_channel_info { unsigned bits_used; unsigned shift; uint64_t mask; + unsigned be; unsigned is_signed; unsigned enabled; unsigned location; @@ -83,6 +85,7 @@ struct iio_channel_info { * @is_signed: output whether channel is signed * @bytes: output how many bytes the channel storage occupies * @mask: output a bit mask for the raw data + * @be: big endian * @device_dir: the iio device directory * @name: the channel name * @generic_name: the channel type name @@ -92,6 +95,7 @@ inline int iioutils_get_type(unsigned *is_signed, unsigned *bits_used, unsigned *shift, uint64_t *mask, + unsigned *be, const char *device_dir, const char *name, const char *generic_name) @@ -100,7 +104,7 @@ inline int iioutils_get_type(unsigned *is_signed, int ret; DIR *dp; char *scan_el_dir, *builtname, *builtname_generic, *filename = 0; - char signchar; + char signchar, endianchar; unsigned padint; const struct dirent *ent; @@ -144,9 +148,18 @@ inline int iioutils_get_type(unsigned *is_signed, ret = -errno; goto error_free_filename; } - fscanf(sysfsfp, - "%c%u/%u>>%u", &signchar, bits_used, - &padint, shift); + + ret = fscanf(sysfsfp, + "%ce:%c%u/%u>>%u", + &endianchar, + &signchar, + bits_used, + &padint, shift); + if (ret < 0) { + printf("failed to pass scan type description\n"); + return ret; + } + *be = (endianchar == 'b'); *bytes = padint / 8; if (*bits_used == 64) *mask = ~0; @@ -156,6 +169,10 @@ inline int iioutils_get_type(unsigned *is_signed, *is_signed = 1; else *is_signed = 0; + fclose(sysfsfp); + free(filename); + + filename = 0; } error_free_filename: if (filename) @@ -386,6 +403,7 @@ inline int build_channel_array(const char *device_dir, ¤t->bits_used, ¤t->shift, ¤t->mask, + ¤t->be, device_dir, current->name, current->generic_name); |