Commit a71654af authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

iio: inv_mpu6050: Make interrupt optional 



The inv_mpu6050 driver requires an interrupt for buffered capture. But non
buffered reading for measurements works just fine without an interrupt
connected.

Make the interrupt optional to support this case.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Acked-by: default avatarJean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Link: https://lore.kernel.org/r/20210325131046.13383-2-lars@metafoo.de


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 0d41da03

drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

+32 −19
Original line number Diff line number Diff line
@@ -1458,6 +1458,7 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name, 
		st->plat_data = *pdata;

	}



	if (irq > 0) {

		desc = irq_get_irq_data(irq);

		if (!desc) {

			dev_err(dev, "Could not find IRQ %d\n", irq);
@@ -1467,6 +1468,11 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name, 
		irq_type = irqd_get_trigger_type(desc);

		if (!irq_type)

			irq_type = IRQF_TRIGGER_RISING;

	} else {

		/* Doesn't really matter, use the default */

		irq_type = IRQF_TRIGGER_RISING;

	}



	if (irq_type & IRQF_TRIGGER_RISING)	// rising or both-edge

		st->irq_mask = INV_MPU6050_ACTIVE_HIGH;

	else if (irq_type == IRQF_TRIGGER_FALLING)
@@ -1592,6 +1598,11 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name, 


	indio_dev->info = &mpu_info;



	if (irq > 0) {

		/*

		 * The driver currently only supports buffered capture with its

		 * own trigger. So no IRQ, no trigger, no buffer

		 */

		result = devm_iio_triggered_buffer_setup(dev, indio_dev,

							 iio_pollfunc_store_time,

							 inv_mpu6050_read_fifo,
@@ -1600,11 +1611,13 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name, 
			dev_err(dev, "configure buffer fail %d\n", result);

			return result;

		}



		result = inv_mpu6050_probe_trigger(indio_dev, irq_type);

		if (result) {

			dev_err(dev, "trigger probe fail %d\n", result);

			return result;

		}

	}



	result = devm_iio_device_register(dev, indio_dev);

	if (result) {