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iio:imu:adis: Use IRQF_NO_AUTOEN instead of irq request then disable

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[ Upstream commit 30f6a542b7d39b1ba990a28a3891bc03691d8d41 ]

This is a bit involved as the adis library code already has some
sanity checking of the flags of the requested irq that we need
to ensure is happy to pass through the IRQF_NO_AUTOEN flag untouched.

Using this flag avoids us autoenabling the irq in the adis16460 and
adis16475 drivers which cover parts that don't have any means of
masking the interrupt on the device end.

Note, compile tested only!

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Alexandru Ardelean <ardeleanalex@gmail.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-7-jic23@kernel.org
Stable-dep-of: 99c05e4283a1 ("iio: adis: add '__adis_enable_irq()' implementation")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonathan Cameron 2021-04-02 19:45:43 +01:00 committed by Greg Kroah-Hartman
parent 50aaa6b174
commit 8eb2a679c6
3 changed files with 11 additions and 9 deletions
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4
drivers/iio/imu/adis16460.c
View File

@ -403,12 +403,12 @@ static int adis16460_probe(struct spi_device *spi)
if (ret)
return ret;
/* We cannot mask the interrupt, so ensure it isn't auto enabled */
st->adis.irq_flag |= IRQF_NO_AUTOEN;
ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev, NULL);
if (ret)
return ret;
adis16460_enable_irq(&st->adis, 0);
ret = __adis_initial_startup(&st->adis);
if (ret)
return ret;

5
drivers/iio/imu/adis16475.c
View File

@ -1196,6 +1196,9 @@ static int adis16475_config_irq_pin(struct adis16475 *st)
return -EINVAL;
}
/* We cannot mask the interrupt so ensure it's not enabled at request */
st->adis.irq_flag |= IRQF_NO_AUTOEN;
val = ADIS16475_MSG_CTRL_DR_POL(polarity);
ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
ADIS16475_MSG_CTRL_DR_POL_MASK, val);
@ -1300,8 +1303,6 @@ static int adis16475_probe(struct spi_device *spi)
if (ret)
return ret;
adis16475_enable_irq(&st->adis, false);
ret = devm_iio_device_register(&spi->dev, indio_dev);
if (ret)
return ret;

11
drivers/iio/imu/adis_trigger.c
View File

@ -36,18 +36,19 @@ static void adis_trigger_setup(struct adis *adis)
static int adis_validate_irq_flag(struct adis *adis)
{
unsigned long direction = adis->irq_flag & IRQF_TRIGGER_MASK;
/*
* Typically this devices have data ready either on the rising edge or
* on the falling edge of the data ready pin. This checks enforces that
* one of those is set in the drivers... It defaults to
* IRQF_TRIGGER_RISING for backward compatibility wiht devices that
* IRQF_TRIGGER_RISING for backward compatibility with devices that
* don't support changing the pin polarity.
*/
if (!adis->irq_flag) {
adis->irq_flag = IRQF_TRIGGER_RISING;
if (direction == IRQF_TRIGGER_NONE) {
adis->irq_flag |= IRQF_TRIGGER_RISING;
return 0;
} else if (adis->irq_flag != IRQF_TRIGGER_RISING &&
adis->irq_flag != IRQF_TRIGGER_FALLING) {
} else if (direction != IRQF_TRIGGER_RISING &&
direction != IRQF_TRIGGER_FALLING) {
dev_err(&adis->spi->dev, "Invalid IRQ mask: %08lx\n",
adis->irq_flag);
return -EINVAL;