zpa2326.c (0d9c2ff1c9f7f8b339fc42ac9763b28c71f1c115) zpa2326.c (f61dfff2f5b9fcb087bf5c444bc44b444709588f)
1/*
2 * Murata ZPA2326 pressure and temperature sensor IIO driver
3 *
4 * Copyright (c) 2016 Parrot S.A.
5 *
6 * Author: Gregor Boirie <gregor.boirie@parrot.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it

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860 * @indio_dev: The IIO device associated with the sampling hardware.
861 * @private: Internal private state related to @indio_dev.
862 *
863 * Return: Zero when successful, a negative error code otherwise.
864 */
865static int zpa2326_wait_oneshot_completion(const struct iio_dev *indio_dev,
866 struct zpa2326_private *private)
867{
1/*
2 * Murata ZPA2326 pressure and temperature sensor IIO driver
3 *
4 * Copyright (c) 2016 Parrot S.A.
5 *
6 * Author: Gregor Boirie <gregor.boirie@parrot.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it

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860 * @indio_dev: The IIO device associated with the sampling hardware.
861 * @private: Internal private state related to @indio_dev.
862 *
863 * Return: Zero when successful, a negative error code otherwise.
864 */
865static int zpa2326_wait_oneshot_completion(const struct iio_dev *indio_dev,
866 struct zpa2326_private *private)
867{
868 int ret;
869 unsigned int val;
870 long timeout;
871
872 zpa2326_dbg(indio_dev, "waiting for one shot completion interrupt");
873
874 timeout = wait_for_completion_interruptible_timeout(
875 &private->data_ready, ZPA2326_CONVERSION_JIFFIES);
876 if (timeout > 0)

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882
883 /* Clear all interrupts just to be sure. */
884 regmap_read(private->regmap, ZPA2326_INT_SOURCE_REG, &val);
885
886 if (!timeout) {
887 /* Timed out. */
888 zpa2326_warn(indio_dev, "no one shot interrupt occurred (%ld)",
889 timeout);
868 unsigned int val;
869 long timeout;
870
871 zpa2326_dbg(indio_dev, "waiting for one shot completion interrupt");
872
873 timeout = wait_for_completion_interruptible_timeout(
874 &private->data_ready, ZPA2326_CONVERSION_JIFFIES);
875 if (timeout > 0)

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881
882 /* Clear all interrupts just to be sure. */
883 regmap_read(private->regmap, ZPA2326_INT_SOURCE_REG, &val);
884
885 if (!timeout) {
886 /* Timed out. */
887 zpa2326_warn(indio_dev, "no one shot interrupt occurred (%ld)",
888 timeout);
890 ret = -ETIME;
891 } else if (timeout < 0) {
892 zpa2326_warn(indio_dev,
893 "wait for one shot interrupt cancelled");
894 ret = -ERESTARTSYS;
889 return -ETIME;
895 }
896
890 }
891
897 return ret;
892 zpa2326_warn(indio_dev, "wait for one shot interrupt cancelled");
893 return -ERESTARTSYS;
898}
899
900static int zpa2326_init_managed_irq(struct device *parent,
901 struct iio_dev *indio_dev,
902 struct zpa2326_private *private,
903 int irq)
904{
905 int err;

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895
896static int zpa2326_init_managed_irq(struct device *parent,
897 struct iio_dev *indio_dev,
898 struct zpa2326_private *private,
899 int irq)
900{
901 int err;

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