linux-kernel - Re: [PATCH v2] iio: imu/mpu6050: support dual-edge IRQ

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Date:   Mon, 6 Jan 2020 16:13:39 +0000
From:   Jean-Baptiste Maneyrol <JManeyrol@...ensense.com>
To:     Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>
CC:     "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] iio: imu/mpu6050: support dual-edge IRQ

Hello,

looks good for me.

Acked-by: Jean-Baptiste Maneyrol <jmaneyrol@...ensense.com>

Thanks,
JB



From: linux-iio-owner@...r.kernel.org <linux-iio-owner@...r.kernel.org> on behalf of Michał Mirosław <mirq-linux@...e.qmqm.pl>

Sent: Monday, January 6, 2020 12:17

To: Jonathan Cameron <jic23@...nel.org>; Hartmut Knaack <knaack.h@....de>; Lars-Peter Clausen <lars@...afoo.de>; Peter Meerwald-Stadler <pmeerw@...erw.net>; Jean-Baptiste Maneyrol <JManeyrol@...ensense.com>

Cc: linux-iio@...r.kernel.org <linux-iio@...r.kernel.org>; linux-kernel@...r.kernel.org <linux-kernel@...r.kernel.org>

Subject: [PATCH v2] iio: imu/mpu6050: support dual-edge IRQ

 


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Make mpu6050 usable on platforms which provide only any-edge interrupts.

This also covers shared interrupt case.



Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>



---

v2:

   just remove the dev_warn() message



Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>

---

 drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 2 +-

 drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 5 +----

 2 files changed, 2 insertions(+), 5 deletions(-)



diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

index 0686e41bb8a1..b3d138091f89 100644

--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

@@ -1241,7 +1241,7 @@ 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;

-       if (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)

                 st->irq_mask = INV_MPU6050_ACTIVE_LOW;

diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c

index 10d16ec5104b..a4dc2c4a3ca5 100644

--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c

+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c

@@ -183,11 +183,8 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)

                         "failed to ack interrupt\n");

                 goto flush_fifo;

         }

-       if (!(int_status & INV_MPU6050_BIT_RAW_DATA_RDY_INT)) {

-               dev_warn(regmap_get_device(st->map),

-                       "spurious interrupt with status 0x%x\n", int_status);

+       if (!(int_status & INV_MPU6050_BIT_RAW_DATA_RDY_INT))

                 goto end_session;

-       }

 

         if (!(st->chip_config.accl_fifo_enable |

                 st->chip_config.gyro_fifo_enable |

-- 

2.20.1