diff options
Diffstat (limited to 'drivers/iio/industrialio-core.c')
| -rw-r--r-- | drivers/iio/industrialio-core.c | 41 |
1 files changed, 29 insertions, 12 deletions
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index b9f4113ae5fc..178e99b111de 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -26,6 +26,7 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/wait.h> +#include <linux/wordpart.h> #include <linux/iio/buffer.h> #include <linux/iio/buffer_impl.h> @@ -966,8 +967,10 @@ static ssize_t iio_write_channel_info(struct device *dev, struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); int ret, fract_mult = 100000; int integer, fract = 0; + long long integer64; bool is_char = false; bool scale_db = false; + bool is_64bit = false; /* Assumes decimal - precision based on number of digits */ if (!indio_dev->info->write_raw) @@ -991,6 +994,9 @@ static ssize_t iio_write_channel_info(struct device *dev, case IIO_VAL_CHAR: is_char = true; break; + case IIO_VAL_INT_64: + is_64bit = true; + break; default: return -EINVAL; } @@ -1001,6 +1007,13 @@ static ssize_t iio_write_channel_info(struct device *dev, if (sscanf(buf, "%c", &ch) != 1) return -EINVAL; integer = ch; + } else if (is_64bit) { + ret = kstrtoll(buf, 0, &integer64); + if (ret) + return ret; + + fract = upper_32_bits(integer64); + integer = lower_32_bits(integer64); } else { ret = __iio_str_to_fixpoint(buf, fract_mult, &integer, &fract, scale_db); @@ -2144,17 +2157,19 @@ int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev, EXPORT_SYMBOL_GPL(__devm_iio_device_register); /** - * iio_device_claim_direct_mode - Keep device in direct mode + * __iio_device_claim_direct - Keep device in direct mode * @indio_dev: the iio_dev associated with the device * * If the device is in direct mode it is guaranteed to stay - * that way until iio_device_release_direct_mode() is called. + * that way until __iio_device_release_direct() is called. * - * Use with iio_device_release_direct_mode() + * Use with __iio_device_release_direct(). * - * Returns: 0 on success, -EBUSY on failure. + * Drivers should only call iio_device_claim_direct(). + * + * Returns: true on success, false on failure. */ -int iio_device_claim_direct_mode(struct iio_dev *indio_dev) +bool __iio_device_claim_direct(struct iio_dev *indio_dev) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); @@ -2162,26 +2177,28 @@ int iio_device_claim_direct_mode(struct iio_dev *indio_dev) if (iio_buffer_enabled(indio_dev)) { mutex_unlock(&iio_dev_opaque->mlock); - return -EBUSY; + return false; } - return 0; + return true; } -EXPORT_SYMBOL_GPL(iio_device_claim_direct_mode); +EXPORT_SYMBOL_GPL(__iio_device_claim_direct); /** - * iio_device_release_direct_mode - releases claim on direct mode + * __iio_device_release_direct - releases claim on direct mode * @indio_dev: the iio_dev associated with the device * * Release the claim. Device is no longer guaranteed to stay * in direct mode. * - * Use with iio_device_claim_direct_mode() + * Drivers should only call iio_device_release_direct(). + * + * Use with __iio_device_claim_direct() */ -void iio_device_release_direct_mode(struct iio_dev *indio_dev) +void __iio_device_release_direct(struct iio_dev *indio_dev) { mutex_unlock(&to_iio_dev_opaque(indio_dev)->mlock); } -EXPORT_SYMBOL_GPL(iio_device_release_direct_mode); +EXPORT_SYMBOL_GPL(__iio_device_release_direct); /** * iio_device_claim_buffer_mode - Keep device in buffer mode |