| Message ID | 1421027714-25726-2-git-send-email-srinivas.pandruvada@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Jiri Kosina |
| Headers | show |
On Mon, Jan 12, 2015 at 9:55 AM, Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> wrote: > Some hid sensor feature report can contain more than one reports. > This API can now support receiving multiple values from the feature > report. > Also update the parameters in the users of this API. > > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> > --- > drivers/hid/hid-sensor-hub.c | 16 ++++++++++++++-- > drivers/iio/common/hid-sensors/hid-sensor-attributes.c | 13 +++++++------ > drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 4 ++-- > include/linux/hid-sensor-hub.h | 8 +++++--- > 4 files changed, 28 insertions(+), 13 deletions(-) > > diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c > index 83b6e15..d17aa67 100644 > --- a/drivers/hid/hid-sensor-hub.c > +++ b/drivers/hid/hid-sensor-hub.c > @@ -218,10 +218,11 @@ done_proc: > EXPORT_SYMBOL_GPL(sensor_hub_set_feature); > > int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > - u32 field_index, s32 *value) > + u32 field_index, int buffer_size, void *buffer) > { > struct hid_report *report; > struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); > + int report_size; > int ret = 0; > > mutex_lock(&data->mutex); > @@ -233,7 +234,18 @@ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > } > hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); > hid_hw_wait(hsdev->hdev); > - *value = report->field[field_index]->value[0]; > + > + /* calculate number of bytes required to read this field */ > + report_size = report->field[field_index]->report_size / 8; > + if (report->field[field_index]->report_size % 8) > + ++report_size; > + report_size *= report->field[field_index]->report_count; Hi Srinivas, I resend my reply. It was discarded by the mailing list due to wrong setting with html formatting. I think would be more clear writing directly: report_size = DIV_ROUND_UP(report->field[field_index]->report_size, 8) * report->field[field_index]->report_count; Regards, Antonio > + if (!report_size) { > + ret = -EINVAL; > + goto done_proc; > + } > + ret = min(report_size, buffer_size); > + memcpy(buffer, report->field[field_index]->value, ret); > > done_proc: > mutex_unlock(&data->mutex); > diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > index 25b01e1..e1435e9 100644 > --- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > +++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > @@ -153,8 +153,8 @@ s32 hid_sensor_read_poll_value(struct hid_sensor_common *st) > int ret; > > ret = sensor_hub_get_feature(st->hsdev, > - st->poll.report_id, > - st->poll.index, &value); > + st->poll.report_id, > + st->poll.index, sizeof(value), &value); > > if (ret < 0 || value < 0) { > return -EINVAL; > @@ -174,8 +174,8 @@ int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st, > int ret; > > ret = sensor_hub_get_feature(st->hsdev, > - st->poll.report_id, > - st->poll.index, &value); > + st->poll.report_id, > + st->poll.index, sizeof(value), &value); > if (ret < 0 || value < 0) { > *val1 = *val2 = 0; > return -EINVAL; > @@ -229,8 +229,9 @@ int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st, > int ret; > > ret = sensor_hub_get_feature(st->hsdev, > - st->sensitivity.report_id, > - st->sensitivity.index, &value); > + st->sensitivity.report_id, > + st->sensitivity.index, sizeof(value), > + &value); > if (ret < 0 || value < 0) { > *val1 = *val2 = 0; > return -EINVAL; > diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > index 92068cd..ef0c495 100644 > --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > @@ -76,8 +76,8 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state) > } > > sensor_hub_get_feature(st->hsdev, st->power_state.report_id, > - st->power_state.index, > - &state_val); > + st->power_state.index, > + sizeof(state_val), &state_val); > return 0; > } > EXPORT_SYMBOL(hid_sensor_power_state); > diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h > index 0b21c4f..1995bbd 100644 > --- a/include/linux/hid-sensor-hub.h > +++ b/include/linux/hid-sensor-hub.h > @@ -203,13 +203,15 @@ int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > * @hsdev: Hub device instance. > * @report_id: Report id to look for > * @field_index: Field index inside a report > -* @value: Place holder for return value > +* @buffer_size: size of the buffer > +* @buffer: buffer to copy output > * > * Used to get a field in feature report. For example this can get polling > -* interval, sensitivity, activate/deactivate state. > +* interval, sensitivity, activate/deactivate state. On success it returns > +* number of bytes copied to buffer. On failure, it returns value < 0. > */ > int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > - u32 field_index, s32 *value); > + u32 field_index, int buffer_size, void *buffer); > > /* hid-sensor-attributes */ > > -- > 1.9.3 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-input" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, 2015-01-12 at 11:57 +0800, Antonio Borneo wrote: > On Mon, Jan 12, 2015 at 9:55 AM, Srinivas Pandruvada > <srinivas.pandruvada@linux.intel.com> wrote: > > Some hid sensor feature report can contain more than one reports. > > This API can now support receiving multiple values from the feature > > report. > > Also update the parameters in the users of this API. > > > > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> > > --- > > drivers/hid/hid-sensor-hub.c | 16 ++++++++++++++-- > > drivers/iio/common/hid-sensors/hid-sensor-attributes.c | 13 +++++++------ > > drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 4 ++-- > > include/linux/hid-sensor-hub.h | 8 +++++--- > > 4 files changed, 28 insertions(+), 13 deletions(-) > > > > diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c > > index 83b6e15..d17aa67 100644 > > --- a/drivers/hid/hid-sensor-hub.c > > +++ b/drivers/hid/hid-sensor-hub.c > > @@ -218,10 +218,11 @@ done_proc: > > EXPORT_SYMBOL_GPL(sensor_hub_set_feature); > > > > int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > > - u32 field_index, s32 *value) > > + u32 field_index, int buffer_size, void *buffer) > > { > > struct hid_report *report; > > struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); > > + int report_size; > > int ret = 0; > > > > mutex_lock(&data->mutex); > > @@ -233,7 +234,18 @@ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > > } > > hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); > > hid_hw_wait(hsdev->hdev); > > - *value = report->field[field_index]->value[0]; > > + > > + /* calculate number of bytes required to read this field */ > > + report_size = report->field[field_index]->report_size / 8; > > + if (report->field[field_index]->report_size % 8) > > + ++report_size; > > + report_size *= report->field[field_index]->report_count; > > Hi Srinivas, Hi Antonio, > > I resend my reply. > It was discarded by the mailing list due to wrong setting with html formatting. > > I think would be more clear writing directly: > > report_size = DIV_ROUND_UP(report->field[field_index]->report_size, 8) * > report->field[field_index]->report_count; Correct. I will resubmit this one. Thanks, Srinivas > > Regards, > Antonio > > > + if (!report_size) { > > + ret = -EINVAL; > > + goto done_proc; > > + } > > + ret = min(report_size, buffer_size); > > + memcpy(buffer, report->field[field_index]->value, ret); > > > > done_proc: > > mutex_unlock(&data->mutex); > > diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > > index 25b01e1..e1435e9 100644 > > --- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > > +++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > > @@ -153,8 +153,8 @@ s32 hid_sensor_read_poll_value(struct hid_sensor_common *st) > > int ret; > > > > ret = sensor_hub_get_feature(st->hsdev, > > - st->poll.report_id, > > - st->poll.index, &value); > > + st->poll.report_id, > > + st->poll.index, sizeof(value), &value); > > > > if (ret < 0 || value < 0) { > > return -EINVAL; > > @@ -174,8 +174,8 @@ int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st, > > int ret; > > > > ret = sensor_hub_get_feature(st->hsdev, > > - st->poll.report_id, > > - st->poll.index, &value); > > + st->poll.report_id, > > + st->poll.index, sizeof(value), &value); > > if (ret < 0 || value < 0) { > > *val1 = *val2 = 0; > > return -EINVAL; > > @@ -229,8 +229,9 @@ int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st, > > int ret; > > > > ret = sensor_hub_get_feature(st->hsdev, > > - st->sensitivity.report_id, > > - st->sensitivity.index, &value); > > + st->sensitivity.report_id, > > + st->sensitivity.index, sizeof(value), > > + &value); > > if (ret < 0 || value < 0) { > > *val1 = *val2 = 0; > > return -EINVAL; > > diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > > index 92068cd..ef0c495 100644 > > --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > > +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > > @@ -76,8 +76,8 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state) > > } > > > > sensor_hub_get_feature(st->hsdev, st->power_state.report_id, > > - st->power_state.index, > > - &state_val); > > + st->power_state.index, > > + sizeof(state_val), &state_val); > > return 0; > > } > > EXPORT_SYMBOL(hid_sensor_power_state); > > diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h > > index 0b21c4f..1995bbd 100644 > > --- a/include/linux/hid-sensor-hub.h > > +++ b/include/linux/hid-sensor-hub.h > > @@ -203,13 +203,15 @@ int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > > * @hsdev: Hub device instance. > > * @report_id: Report id to look for > > * @field_index: Field index inside a report > > -* @value: Place holder for return value > > +* @buffer_size: size of the buffer > > +* @buffer: buffer to copy output > > * > > * Used to get a field in feature report. For example this can get polling > > -* interval, sensitivity, activate/deactivate state. > > +* interval, sensitivity, activate/deactivate state. On success it returns > > +* number of bytes copied to buffer. On failure, it returns value < 0. > > */ > > int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > > - u32 field_index, s32 *value); > > + u32 field_index, int buffer_size, void *buffer); > > > > /* hid-sensor-attributes */ > > > > -- > > 1.9.3 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-input" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 12/01/15 01:55, Srinivas Pandruvada wrote: > Some hid sensor feature report can contain more than one reports. > This API can now support receiving multiple values from the feature > report. > Also update the parameters in the users of this API. > > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Looks like a straight forward addition to me. With the change Antonio suggested Acked-by: Jonathan Cameron <jic23@kernel.org> > --- > drivers/hid/hid-sensor-hub.c | 16 ++++++++++++++-- > drivers/iio/common/hid-sensors/hid-sensor-attributes.c | 13 +++++++------ > drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 4 ++-- > include/linux/hid-sensor-hub.h | 8 +++++--- > 4 files changed, 28 insertions(+), 13 deletions(-) > > diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c > index 83b6e15..d17aa67 100644 > --- a/drivers/hid/hid-sensor-hub.c > +++ b/drivers/hid/hid-sensor-hub.c > @@ -218,10 +218,11 @@ done_proc: > EXPORT_SYMBOL_GPL(sensor_hub_set_feature); > > int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > - u32 field_index, s32 *value) > + u32 field_index, int buffer_size, void *buffer) > { > struct hid_report *report; > struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); > + int report_size; > int ret = 0; > > mutex_lock(&data->mutex); > @@ -233,7 +234,18 @@ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > } > hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); > hid_hw_wait(hsdev->hdev); > - *value = report->field[field_index]->value[0]; > + > + /* calculate number of bytes required to read this field */ > + report_size = report->field[field_index]->report_size / 8; > + if (report->field[field_index]->report_size % 8) > + ++report_size; > + report_size *= report->field[field_index]->report_count; > + if (!report_size) { > + ret = -EINVAL; > + goto done_proc; > + } > + ret = min(report_size, buffer_size); > + memcpy(buffer, report->field[field_index]->value, ret); > > done_proc: > mutex_unlock(&data->mutex); > diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > index 25b01e1..e1435e9 100644 > --- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > +++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c > @@ -153,8 +153,8 @@ s32 hid_sensor_read_poll_value(struct hid_sensor_common *st) > int ret; > > ret = sensor_hub_get_feature(st->hsdev, > - st->poll.report_id, > - st->poll.index, &value); > + st->poll.report_id, > + st->poll.index, sizeof(value), &value); > > if (ret < 0 || value < 0) { > return -EINVAL; > @@ -174,8 +174,8 @@ int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st, > int ret; > > ret = sensor_hub_get_feature(st->hsdev, > - st->poll.report_id, > - st->poll.index, &value); > + st->poll.report_id, > + st->poll.index, sizeof(value), &value); > if (ret < 0 || value < 0) { > *val1 = *val2 = 0; > return -EINVAL; > @@ -229,8 +229,9 @@ int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st, > int ret; > > ret = sensor_hub_get_feature(st->hsdev, > - st->sensitivity.report_id, > - st->sensitivity.index, &value); > + st->sensitivity.report_id, > + st->sensitivity.index, sizeof(value), > + &value); > if (ret < 0 || value < 0) { > *val1 = *val2 = 0; > return -EINVAL; > diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > index 92068cd..ef0c495 100644 > --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c > @@ -76,8 +76,8 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state) > } > > sensor_hub_get_feature(st->hsdev, st->power_state.report_id, > - st->power_state.index, > - &state_val); > + st->power_state.index, > + sizeof(state_val), &state_val); > return 0; > } > EXPORT_SYMBOL(hid_sensor_power_state); > diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h > index 0b21c4f..1995bbd 100644 > --- a/include/linux/hid-sensor-hub.h > +++ b/include/linux/hid-sensor-hub.h > @@ -203,13 +203,15 @@ int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > * @hsdev: Hub device instance. > * @report_id: Report id to look for > * @field_index: Field index inside a report > -* @value: Place holder for return value > +* @buffer_size: size of the buffer > +* @buffer: buffer to copy output > * > * Used to get a field in feature report. For example this can get polling > -* interval, sensitivity, activate/deactivate state. > +* interval, sensitivity, activate/deactivate state. On success it returns > +* number of bytes copied to buffer. On failure, it returns value < 0. > */ > int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, > - u32 field_index, s32 *value); > + u32 field_index, int buffer_size, void *buffer); > > /* hid-sensor-attributes */ > > -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c index 83b6e15..d17aa67 100644 --- a/drivers/hid/hid-sensor-hub.c +++ b/drivers/hid/hid-sensor-hub.c @@ -218,10 +218,11 @@ done_proc: EXPORT_SYMBOL_GPL(sensor_hub_set_feature); int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, - u32 field_index, s32 *value) + u32 field_index, int buffer_size, void *buffer) { struct hid_report *report; struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); + int report_size; int ret = 0; mutex_lock(&data->mutex); @@ -233,7 +234,18 @@ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, } hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); hid_hw_wait(hsdev->hdev); - *value = report->field[field_index]->value[0]; + + /* calculate number of bytes required to read this field */ + report_size = report->field[field_index]->report_size / 8; + if (report->field[field_index]->report_size % 8) + ++report_size; + report_size *= report->field[field_index]->report_count; + if (!report_size) { + ret = -EINVAL; + goto done_proc; + } + ret = min(report_size, buffer_size); + memcpy(buffer, report->field[field_index]->value, ret); done_proc: mutex_unlock(&data->mutex); diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c index 25b01e1..e1435e9 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c @@ -153,8 +153,8 @@ s32 hid_sensor_read_poll_value(struct hid_sensor_common *st) int ret; ret = sensor_hub_get_feature(st->hsdev, - st->poll.report_id, - st->poll.index, &value); + st->poll.report_id, + st->poll.index, sizeof(value), &value); if (ret < 0 || value < 0) { return -EINVAL; @@ -174,8 +174,8 @@ int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st, int ret; ret = sensor_hub_get_feature(st->hsdev, - st->poll.report_id, - st->poll.index, &value); + st->poll.report_id, + st->poll.index, sizeof(value), &value); if (ret < 0 || value < 0) { *val1 = *val2 = 0; return -EINVAL; @@ -229,8 +229,9 @@ int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st, int ret; ret = sensor_hub_get_feature(st->hsdev, - st->sensitivity.report_id, - st->sensitivity.index, &value); + st->sensitivity.report_id, + st->sensitivity.index, sizeof(value), + &value); if (ret < 0 || value < 0) { *val1 = *val2 = 0; return -EINVAL; diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c index 92068cd..ef0c495 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c @@ -76,8 +76,8 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state) } sensor_hub_get_feature(st->hsdev, st->power_state.report_id, - st->power_state.index, - &state_val); + st->power_state.index, + sizeof(state_val), &state_val); return 0; } EXPORT_SYMBOL(hid_sensor_power_state); diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h index 0b21c4f..1995bbd 100644 --- a/include/linux/hid-sensor-hub.h +++ b/include/linux/hid-sensor-hub.h @@ -203,13 +203,15 @@ int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, * @hsdev: Hub device instance. * @report_id: Report id to look for * @field_index: Field index inside a report -* @value: Place holder for return value +* @buffer_size: size of the buffer +* @buffer: buffer to copy output * * Used to get a field in feature report. For example this can get polling -* interval, sensitivity, activate/deactivate state. +* interval, sensitivity, activate/deactivate state. On success it returns +* number of bytes copied to buffer. On failure, it returns value < 0. */ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, - u32 field_index, s32 *value); + u32 field_index, int buffer_size, void *buffer); /* hid-sensor-attributes */
Some hid sensor feature report can contain more than one reports. This API can now support receiving multiple values from the feature report. Also update the parameters in the users of this API. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> --- drivers/hid/hid-sensor-hub.c | 16 ++++++++++++++-- drivers/iio/common/hid-sensors/hid-sensor-attributes.c | 13 +++++++------ drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 4 ++-- include/linux/hid-sensor-hub.h | 8 +++++--- 4 files changed, 28 insertions(+), 13 deletions(-)