From 322a3b1ea2b1844acb957efbcf4388062bc5684b Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Sat, 2 May 2015 00:53:32 +0900 Subject: iio: hid-sensor-gyro-3d: Constify platform_device_id The platform_device_id is not modified by the driver and core uses it as const. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/hid-sensor-gyro-3d.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iio/gyro') diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c index b5883b6f4e50..2e10799fe287 100644 --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c @@ -397,7 +397,7 @@ static int hid_gyro_3d_remove(struct platform_device *pdev) return 0; } -static struct platform_device_id hid_gyro_3d_ids[] = { +static const struct platform_device_id hid_gyro_3d_ids[] = { { /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-200076", -- cgit v1.2.3 From d8c9d23e29e3d758ea477adaa95e28cbf3556518 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 13 May 2015 15:06:10 -0300 Subject: iio: gyro: hid-sensor-gyro-3d: Fix memory leak in probe() 'channels' is allocated via kmemdup and it is never freed in the subsequent error paths. Use 'indio_dev->channels' directly instead, so that we avoid such memory leak problem. Signed-off-by: Fabio Estevam Reviewed-by: Srinivas Pandruvada Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/hid-sensor-gyro-3d.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'drivers/iio/gyro') diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c index 2e10799fe287..c67ce2ac4715 100644 --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c @@ -298,7 +298,6 @@ static int hid_gyro_3d_probe(struct platform_device *pdev) struct iio_dev *indio_dev; struct gyro_3d_state *gyro_state; struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; - struct iio_chan_spec *channels; indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*gyro_state)); if (!indio_dev) @@ -317,21 +316,21 @@ static int hid_gyro_3d_probe(struct platform_device *pdev) return ret; } - channels = kmemdup(gyro_3d_channels, sizeof(gyro_3d_channels), - GFP_KERNEL); - if (!channels) { + indio_dev->channels = kmemdup(gyro_3d_channels, + sizeof(gyro_3d_channels), GFP_KERNEL); + if (!indio_dev->channels) { dev_err(&pdev->dev, "failed to duplicate channels\n"); return -ENOMEM; } - ret = gyro_3d_parse_report(pdev, hsdev, channels, - HID_USAGE_SENSOR_GYRO_3D, gyro_state); + ret = gyro_3d_parse_report(pdev, hsdev, + (struct iio_chan_spec *)indio_dev->channels, + HID_USAGE_SENSOR_GYRO_3D, gyro_state); if (ret) { dev_err(&pdev->dev, "failed to setup attributes\n"); goto error_free_dev_mem; } - indio_dev->channels = channels; indio_dev->num_channels = ARRAY_SIZE(gyro_3d_channels); indio_dev->dev.parent = &pdev->dev; indio_dev->info = &gyro_3d_info; -- cgit v1.2.3 From eb2191017e3063c7269be81e1543ccd157bb1e8b Mon Sep 17 00:00:00 2001 From: Vlad Dogaru Date: Wed, 13 May 2015 16:30:08 +0300 Subject: iio: gyro: bmg160: remove redundant field Replace the 'timestamp' field in struct bmg160_data with the identically named field in iio_poll_func and with calls to iio_get_time_ns(). The reported timestamps may be slightly different, but the advantage is that we no longer assume that the buffer of bmg160 is triggered by its own trigger. Signed-off-by: Vlad Dogaru Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/bmg160.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'drivers/iio/gyro') diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160.c index 4415f55d26b6..d36af62ea230 100644 --- a/drivers/iio/gyro/bmg160.c +++ b/drivers/iio/gyro/bmg160.c @@ -108,7 +108,6 @@ struct bmg160_data { int slope_thres; bool dready_trigger_on; bool motion_trigger_on; - int64_t timestamp; }; enum bmg160_axis { @@ -835,7 +834,7 @@ static irqreturn_t bmg160_trigger_handler(int irq, void *p) mutex_unlock(&data->mutex); iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, - data->timestamp); + pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig); @@ -938,21 +937,21 @@ static irqreturn_t bmg160_event_handler(int irq, void *private) IIO_MOD_X, IIO_EV_TYPE_ROC, dir), - data->timestamp); + iio_get_time_ns()); if (ret & BMG160_ANY_MOTION_BIT_Y) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, 0, IIO_MOD_Y, IIO_EV_TYPE_ROC, dir), - data->timestamp); + iio_get_time_ns()); if (ret & BMG160_ANY_MOTION_BIT_Z) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, 0, IIO_MOD_Z, IIO_EV_TYPE_ROC, dir), - data->timestamp); + iio_get_time_ns()); ack_intr_status: if (!data->dready_trigger_on) { @@ -973,8 +972,6 @@ static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private) struct iio_dev *indio_dev = private; struct bmg160_data *data = iio_priv(indio_dev); - data->timestamp = iio_get_time_ns(); - if (data->dready_trigger_on) iio_trigger_poll(data->dready_trig); else if (data->motion_trigger_on) @@ -1105,7 +1102,7 @@ static int bmg160_probe(struct i2c_client *client, } ret = iio_triggered_buffer_setup(indio_dev, - NULL, + iio_pollfunc_store_time, bmg160_trigger_handler, NULL); if (ret < 0) { -- cgit v1.2.3 From 00e0c8e8e865730b34f2e5f46b5d745f74346065 Mon Sep 17 00:00:00 2001 From: Vlad Dogaru Date: Wed, 13 May 2015 16:30:09 +0300 Subject: iio: gyro: bmg160: decouple buffer and triggers Make it possible to use buffering with an external trigger, such as one based on sysfs or hrtimer. Signed-off-by: Vlad Dogaru Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/bmg160.c | 56 +++++++++++++++++++++++++++-------------------- 1 file changed, 32 insertions(+), 24 deletions(-) (limited to 'drivers/iio/gyro') diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160.c index d36af62ea230..460bf715d541 100644 --- a/drivers/iio/gyro/bmg160.c +++ b/drivers/iio/gyro/bmg160.c @@ -737,17 +737,6 @@ static int bmg160_write_event_config(struct iio_dev *indio_dev, return 0; } -static int bmg160_validate_trigger(struct iio_dev *indio_dev, - struct iio_trigger *trig) -{ - struct bmg160_data *data = iio_priv(indio_dev); - - if (data->dready_trig != trig && data->motion_trig != trig) - return -EINVAL; - - return 0; -} - static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 400 1000 2000"); static IIO_CONST_ATTR(in_anglvel_scale_available, @@ -809,7 +798,6 @@ static const struct iio_info bmg160_info = { .write_event_value = bmg160_write_event, .write_event_config = bmg160_write_event_config, .read_event_config = bmg160_read_event_config, - .validate_trigger = bmg160_validate_trigger, .driver_module = THIS_MODULE, }; @@ -984,6 +972,27 @@ static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private) } +static int bmg160_buffer_preenable(struct iio_dev *indio_dev) +{ + struct bmg160_data *data = iio_priv(indio_dev); + + return bmg160_set_power_state(data, true); +} + +static int bmg160_buffer_postdisable(struct iio_dev *indio_dev) +{ + struct bmg160_data *data = iio_priv(indio_dev); + + return bmg160_set_power_state(data, false); +} + +static const struct iio_buffer_setup_ops bmg160_buffer_setup_ops = { + .preenable = bmg160_buffer_preenable, + .postenable = iio_triggered_buffer_postenable, + .predisable = iio_triggered_buffer_predisable, + .postdisable = bmg160_buffer_postdisable, +}; + static int bmg160_gpio_probe(struct i2c_client *client, struct bmg160_data *data) @@ -1100,16 +1109,16 @@ static int bmg160_probe(struct i2c_client *client, data->motion_trig = NULL; goto err_trigger_unregister; } + } - ret = iio_triggered_buffer_setup(indio_dev, - iio_pollfunc_store_time, - bmg160_trigger_handler, - NULL); - if (ret < 0) { - dev_err(&client->dev, - "iio triggered buffer setup failed\n"); - goto err_trigger_unregister; - } + ret = iio_triggered_buffer_setup(indio_dev, + iio_pollfunc_store_time, + bmg160_trigger_handler, + &bmg160_buffer_setup_ops); + if (ret < 0) { + dev_err(&client->dev, + "iio triggered buffer setup failed\n"); + goto err_trigger_unregister; } ret = iio_device_register(indio_dev); @@ -1132,8 +1141,7 @@ static int bmg160_probe(struct i2c_client *client, err_iio_unregister: iio_device_unregister(indio_dev); err_buffer_cleanup: - if (data->dready_trig) - iio_triggered_buffer_cleanup(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); err_trigger_unregister: if (data->dready_trig) iio_trigger_unregister(data->dready_trig); @@ -1153,9 +1161,9 @@ static int bmg160_remove(struct i2c_client *client) pm_runtime_put_noidle(&client->dev); iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); if (data->dready_trig) { - iio_triggered_buffer_cleanup(indio_dev); iio_trigger_unregister(data->dready_trig); iio_trigger_unregister(data->motion_trig); } -- cgit v1.2.3