From: Jonathan Bakker xc-racer2@live.ca
[ Upstream commit f6dbf83c17cb223ceabd7c42d441414f3e0e8a86 ]
The light sensor needs the regulators to be enabled which means the runtime PM needs to be on. This only happened when the proximity part of the chip was enabled.
As fallout from this change, only report changes to the prox state in the interrupt handler when it is explicitly enabled.
Fixes: 97d642e23037 ("iio: light: Add a driver for Sharp GP2AP002x00F") Signed-off-by: Jonathan Bakker xc-racer2@live.ca Reviewed-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/light/gp2ap002.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/iio/light/gp2ap002.c b/drivers/iio/light/gp2ap002.c index b7ef16b28280..7a2679bdc987 100644 --- a/drivers/iio/light/gp2ap002.c +++ b/drivers/iio/light/gp2ap002.c @@ -158,6 +158,9 @@ static irqreturn_t gp2ap002_prox_irq(int irq, void *d) int val; int ret;
+ if (!gp2ap002->enabled) + goto err_retrig; + ret = regmap_read(gp2ap002->map, GP2AP002_PROX, &val); if (ret) { dev_err(gp2ap002->dev, "error reading proximity\n"); @@ -247,6 +250,8 @@ static int gp2ap002_read_raw(struct iio_dev *indio_dev, struct gp2ap002 *gp2ap002 = iio_priv(indio_dev); int ret;
+ pm_runtime_get_sync(gp2ap002->dev); + switch (mask) { case IIO_CHAN_INFO_RAW: switch (chan->type) { @@ -255,13 +260,21 @@ static int gp2ap002_read_raw(struct iio_dev *indio_dev, if (ret < 0) return ret; *val = ret; - return IIO_VAL_INT; + ret = IIO_VAL_INT; + goto out; default: - return -EINVAL; + ret = -EINVAL; + goto out; } default: - return -EINVAL; + ret = -EINVAL; } + +out: + pm_runtime_mark_last_busy(gp2ap002->dev); + pm_runtime_put_autosuspend(gp2ap002->dev); + + return ret; }
static int gp2ap002_init(struct gp2ap002 *gp2ap002)