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Date: Thu, 24 Nov 2016 20:43:06 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
"Ooi, Joyce" <joyce.ooi@...el.com>, Jiri Kosina <jikos@...nel.org>
Cc: Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
linux-input@...r.kernel.org, linux-iio@...r.kernel.org,
linux-kernel@...r.kernel.org,
Kweh Hock Leong <hock.leong.kweh@...el.com>,
Ong Boon Leong <boon.leong.ong@...el.com>,
Lay Kuan Loon <kuan.loon.lay@...el.com>
Subject: Re: [PATCH v2] iio: magnetometer: separate the values of attributes
based on their usage type for HID compass sensor
On 19/11/16 16:46, Srinivas Pandruvada wrote:
> On Sat, 2016-11-19 at 12:56 +0000, Jonathan Cameron wrote:
>> On 16/11/16 09:43, Ooi, Joyce wrote:
>>>
>>> There are 2 usage types (Magnetic Flux and Heading data field) for
>>> HID
>>> compass sensor, thus the values of offset, scale, and sensitivity
>>> should
>>> be separated according to their respective usage type. The changes
>>> made
>>> are as below:
>>> 1. Hysteresis: A struct hid_sensor_common rot_attributes is created
>>> in
>>> struct magn_3d_state to contain the sensitivity for IIO_ROT.
>>> 2. Scale: scale_pre_decml and scale_post_decml are separated for
>>> IIO_MAGN
>>> and IIO_ROT.
>>> 3. Offset: Same as scale, value_offset is separated for IIO_MAGN
>>> and
>>> IIO_ROT.
>>>
>>> For sensitivity, HID_USAGE_SENSOR_ORIENT_MAGN_FLUX and
>>> HID_USAGE_SENSOR_ORIENT_MAGN_HEADING are used for sensivitity
>>> fields based
>>> on the HID Sensor Usages specifications. Hence, these changes are
>>> added on
>>> the sensitivity field.
>>>
>>> Signed-off-by: Ooi, Joyce <joyce.ooi@...el.com>
> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Applied to the togreg branch of iio.git.
Probably the last patch to sneak in before the merge window
(depending on when that opens!)
Jonathan
>
>> I think I follow this one and it looks fine to me. However, I would
>> like
>> an Ack or review from Srinivas on this one.
>>
>> Thanks,
>>
>> Jonathan
>>>
>>> ---
>>> changelog v2:
>>> * rename struct hid_sensor_common common_attributes to struct
>>> hid_sensor_common magn_flux_attributes.
>>> * create a common_attributes struct which stores scale_pre_decml,
>>> scale_post_decml, scale_precision, and value_offset.
>>> * create struct hid_sensor_common magn_flux_attributes and
>>> rot_attributes
>>> for IIO_MAGN and IIO_ROT respectively.
>>>
>>> drivers/iio/magnetometer/hid-sensor-magn-3d.c | 147
>>> ++++++++++++++++++++------
>>> 1 file changed, 112 insertions(+), 35 deletions(-)
>>>
>>> diff --git a/drivers/iio/magnetometer/hid-sensor-magn-3d.c
>>> b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
>>> index d8a0c8d..0e791b0 100644
>>> --- a/drivers/iio/magnetometer/hid-sensor-magn-3d.c
>>> +++ b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
>>> @@ -42,9 +42,17 @@ enum magn_3d_channel {
>>> MAGN_3D_CHANNEL_MAX,
>>> };
>>>
>>> +struct common_attributes {
>>> + int scale_pre_decml;
>>> + int scale_post_decml;
>>> + int scale_precision;
>>> + int value_offset;
>>> +};
>>> +
>>> struct magn_3d_state {
>>> struct hid_sensor_hub_callbacks callbacks;
>>> - struct hid_sensor_common common_attributes;
>>> + struct hid_sensor_common magn_flux_attributes;
>>> + struct hid_sensor_common rot_attributes;
>>> struct hid_sensor_hub_attribute_info
>>> magn[MAGN_3D_CHANNEL_MAX];
>>>
>>> /* dynamically sized array to hold sensor values */
>>> @@ -52,10 +60,8 @@ struct magn_3d_state {
>>> /* array of pointers to sensor value */
>>> u32 *magn_val_addr[MAGN_3D_CHANNEL_MAX];
>>>
>>> - int scale_pre_decml;
>>> - int scale_post_decml;
>>> - int scale_precision;
>>> - int value_offset;
>>> + struct common_attributes magn_flux_attr;
>>> + struct common_attributes rot_attr;
>>> };
>>>
>>> static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = {
>>> @@ -162,41 +168,74 @@ static int magn_3d_read_raw(struct iio_dev
>>> *indio_dev,
>>> *val2 = 0;
>>> switch (mask) {
>>> case 0:
>>> - hid_sensor_power_state(&magn_state-
>>>> common_attributes, true);
>>> + hid_sensor_power_state(&magn_state-
>>>> magn_flux_attributes, true);
>>> report_id =
>>> magn_state->magn[chan->address].report_id;
>>> address = magn_3d_addresses[chan->address];
>>> if (report_id >= 0)
>>> *val =
>>> sensor_hub_input_attr_get_raw_value(
>>> - magn_state-
>>>> common_attributes.hsdev,
>>> + magn_state-
>>>> magn_flux_attributes.hsdev,
>>> HID_USAGE_SENSOR_COMPASS_3D,
>>> address,
>>> report_id,
>>> SENSOR_HUB_SYNC);
>>> else {
>>> *val = 0;
>>> - hid_sensor_power_state(&magn_state-
>>>> common_attributes,
>>> - false);
>>> + hid_sensor_power_state(
>>> + &magn_state->magn_flux_attributes,
>>> + false);
>>> return -EINVAL;
>>> }
>>> - hid_sensor_power_state(&magn_state-
>>>> common_attributes, false);
>>> + hid_sensor_power_state(&magn_state-
>>>> magn_flux_attributes,
>>> + false);
>>> ret_type = IIO_VAL_INT;
>>> break;
>>> case IIO_CHAN_INFO_SCALE:
>>> - *val = magn_state->scale_pre_decml;
>>> - *val2 = magn_state->scale_post_decml;
>>> - ret_type = magn_state->scale_precision;
>>> + switch (chan->type) {
>>> + case IIO_MAGN:
>>> + *val = magn_state-
>>>> magn_flux_attr.scale_pre_decml;
>>> + *val2 = magn_state-
>>>> magn_flux_attr.scale_post_decml;
>>> + ret_type = magn_state-
>>>> magn_flux_attr.scale_precision;
>>> + break;
>>> + case IIO_ROT:
>>> + *val = magn_state-
>>>> rot_attr.scale_pre_decml;
>>> + *val2 = magn_state-
>>>> rot_attr.scale_post_decml;
>>> + ret_type = magn_state-
>>>> rot_attr.scale_precision;
>>> + break;
>>> + default:
>>> + ret_type = -EINVAL;
>>> + }
>>> break;
>>> case IIO_CHAN_INFO_OFFSET:
>>> - *val = magn_state->value_offset;
>>> - ret_type = IIO_VAL_INT;
>>> + switch (chan->type) {
>>> + case IIO_MAGN:
>>> + *val = magn_state-
>>>> magn_flux_attr.value_offset;
>>> + ret_type = IIO_VAL_INT;
>>> + break;
>>> + case IIO_ROT:
>>> + *val = magn_state->rot_attr.value_offset;
>>> + ret_type = IIO_VAL_INT;
>>> + break;
>>> + default:
>>> + ret_type = -EINVAL;
>>> + }
>>> break;
>>> case IIO_CHAN_INFO_SAMP_FREQ:
>>> ret_type = hid_sensor_read_samp_freq_value(
>>> - &magn_state->common_attributes, val,
>>> val2);
>>> + &magn_state->magn_flux_attributes, val,
>>> val2);
>>> break;
>>> case IIO_CHAN_INFO_HYSTERESIS:
>>> - ret_type = hid_sensor_read_raw_hyst_value(
>>> - &magn_state->common_attributes, val,
>>> val2);
>>> + switch (chan->type) {
>>> + case IIO_MAGN:
>>> + ret_type = hid_sensor_read_raw_hyst_value(
>>> + &magn_state->magn_flux_attributes,
>>> val, val2);
>>> + break;
>>> + case IIO_ROT:
>>> + ret_type = hid_sensor_read_raw_hyst_value(
>>> + &magn_state->rot_attributes, val,
>>> val2);
>>> + break;
>>> + default:
>>> + ret_type = -EINVAL;
>>> + }
>>> break;
>>> default:
>>> ret_type = -EINVAL;
>>> @@ -219,11 +258,21 @@ static int magn_3d_write_raw(struct iio_dev
>>> *indio_dev,
>>> switch (mask) {
>>> case IIO_CHAN_INFO_SAMP_FREQ:
>>> ret = hid_sensor_write_samp_freq_value(
>>> - &magn_state->common_attributes,
>>> val, val2);
>>> + &magn_state->magn_flux_attributes,
>>> val, val2);
>>> break;
>>> case IIO_CHAN_INFO_HYSTERESIS:
>>> - ret = hid_sensor_write_raw_hyst_value(
>>> - &magn_state->common_attributes,
>>> val, val2);
>>> + switch (chan->type) {
>>> + case IIO_MAGN:
>>> + ret = hid_sensor_write_raw_hyst_value(
>>> + &magn_state->magn_flux_attributes,
>>> val, val2);
>>> + break;
>>> + case IIO_ROT:
>>> + ret = hid_sensor_write_raw_hyst_value(
>>> + &magn_state->rot_attributes, val,
>>> val2);
>>> + break;
>>> + default:
>>> + ret = -EINVAL;
>>> + }
>>> break;
>>> default:
>>> ret = -EINVAL;
>>> @@ -254,7 +303,7 @@ static int magn_3d_proc_event(struct
>>> hid_sensor_hub_device *hsdev,
>>> struct magn_3d_state *magn_state = iio_priv(indio_dev);
>>>
>>> dev_dbg(&indio_dev->dev, "magn_3d_proc_event\n");
>>> - if (atomic_read(&magn_state-
>>>> common_attributes.data_ready))
>>> + if (atomic_read(&magn_state-
>>>> magn_flux_attributes.data_ready))
>>> hid_sensor_push_data(indio_dev, magn_state-
>>>> iio_vals);
>>>
>>> return 0;
>>> @@ -389,21 +438,48 @@ static int magn_3d_parse_report(struct
>>> platform_device *pdev,
>>> dev_dbg(&pdev->dev, "magn_3d Setup %d IIO channels\n",
>>> *chan_count);
>>>
>>> - st->scale_precision = hid_sensor_format_scale(
>>> + st->magn_flux_attr.scale_precision =
>>> hid_sensor_format_scale(
>>> HID_USAGE_SENSOR_COMPASS_3D,
>>> &st->magn[CHANNEL_SCAN_INDEX_X],
>>> - &st->scale_pre_decml, &st-
>>>> scale_post_decml);
>>> + &st-
>>>> magn_flux_attr.scale_pre_decml,
>>> + &st-
>>>> magn_flux_attr.scale_post_decml);
>>> + st->rot_attr.scale_precision
>>> + = hid_sensor_format_scale(
>>> + HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH,
>>> + &st-
>>>> magn[CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP],
>>> + &st->rot_attr.scale_pre_decml,
>>> + &st->rot_attr.scale_post_decml);
>>>
>>> /* Set Sensitivity field ids, when there is no individual
>>> modifier */
>>> - if (st->common_attributes.sensitivity.index < 0) {
>>> + if (st->magn_flux_attributes.sensitivity.index < 0) {
>>> sensor_hub_input_get_attribute_info(hsdev,
>>> HID_FEATURE_REPORT, usage_id,
>>> HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVI
>>> TY_ABS |
>>> HID_USAGE_SENSOR_DATA_ORIENTATION,
>>> - &st->common_attributes.sensitivity);
>>> + &st->magn_flux_attributes.sensitivity);
>>> + dev_dbg(&pdev->dev, "Sensitivity index:report
>>> %d:%d\n",
>>> + st-
>>>> magn_flux_attributes.sensitivity.index,
>>> + st-
>>>> magn_flux_attributes.sensitivity.report_id);
>>> + }
>>> + if (st->magn_flux_attributes.sensitivity.index < 0) {
>>> + sensor_hub_input_get_attribute_info(hsdev,
>>> + HID_FEATURE_REPORT, usage_id,
>>> + HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVI
>>> TY_ABS |
>>> + HID_USAGE_SENSOR_ORIENT_MAGN_FLUX,
>>> + &st->magn_flux_attributes.sensitivity);
>>> + dev_dbg(&pdev->dev, "Sensitivity index:report
>>> %d:%d\n",
>>> + st-
>>>> magn_flux_attributes.sensitivity.index,
>>> + st-
>>>> magn_flux_attributes.sensitivity.report_id);
>>> + }
>>> + if (st->rot_attributes.sensitivity.index < 0) {
>>> + sensor_hub_input_get_attribute_info(hsdev,
>>> + HID_FEATURE_REPORT, usage_id,
>>> + HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVI
>>> TY_ABS |
>>> + HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH,
>>> + &st->rot_attributes.sensitivity);
>>> dev_dbg(&pdev->dev, "Sensitivity index:report
>>> %d:%d\n",
>>> - st->common_attributes.sensitivity.index,
>>> - st-
>>>> common_attributes.sensitivity.report_id);
>>> + st->rot_attributes.sensitivity.index,
>>> + st->rot_attributes.sensitivity.report_id);
>>> }
>>>
>>> return 0;
>>> @@ -428,16 +504,17 @@ static int hid_magn_3d_probe(struct
>>> platform_device *pdev)
>>> platform_set_drvdata(pdev, indio_dev);
>>>
>>> magn_state = iio_priv(indio_dev);
>>> - magn_state->common_attributes.hsdev = hsdev;
>>> - magn_state->common_attributes.pdev = pdev;
>>> + magn_state->magn_flux_attributes.hsdev = hsdev;
>>> + magn_state->magn_flux_attributes.pdev = pdev;
>>>
>>> ret = hid_sensor_parse_common_attributes(hsdev,
>>> HID_USAGE_SENSOR_COMPASS_3D,
>>> - &magn_state->common_attributes);
>>> + &magn_state-
>>>> magn_flux_attributes);
>>> if (ret) {
>>> dev_err(&pdev->dev, "failed to setup common
>>> attributes\n");
>>> return ret;
>>> }
>>> + magn_state->rot_attributes = magn_state-
>>>> magn_flux_attributes;
>>>
>>> ret = magn_3d_parse_report(pdev, hsdev,
>>> &channels, &chan_count,
>>> @@ -460,9 +537,9 @@ static int hid_magn_3d_probe(struct
>>> platform_device *pdev)
>>> dev_err(&pdev->dev, "failed to initialize trigger
>>> buffer\n");
>>> return ret;
>>> }
>>> - atomic_set(&magn_state->common_attributes.data_ready, 0);
>>> + atomic_set(&magn_state->magn_flux_attributes.data_ready,
>>> 0);
>>> ret = hid_sensor_setup_trigger(indio_dev, name,
>>> - &magn_state-
>>>> common_attributes);
>>> + &magn_state-
>>>> magn_flux_attributes);
>>> if (ret < 0) {
>>> dev_err(&pdev->dev, "trigger setup failed\n");
>>> goto error_unreg_buffer_funcs;
>>> @@ -489,7 +566,7 @@ static int hid_magn_3d_probe(struct
>>> platform_device *pdev)
>>> error_iio_unreg:
>>> iio_device_unregister(indio_dev);
>>> error_remove_trigger:
>>> - hid_sensor_remove_trigger(&magn_state->common_attributes);
>>> + hid_sensor_remove_trigger(&magn_state-
>>>> magn_flux_attributes);
>>> error_unreg_buffer_funcs:
>>> iio_triggered_buffer_cleanup(indio_dev);
>>> return ret;
>>> @@ -504,7 +581,7 @@ static int hid_magn_3d_remove(struct
>>> platform_device *pdev)
>>>
>>> sensor_hub_remove_callback(hsdev,
>>> HID_USAGE_SENSOR_COMPASS_3D);
>>> iio_device_unregister(indio_dev);
>>> - hid_sensor_remove_trigger(&magn_state->common_attributes);
>>> + hid_sensor_remove_trigger(&magn_state-
>>>> magn_flux_attributes);
>>> iio_triggered_buffer_cleanup(indio_dev);
>>>
>>> return 0;
>>>
>>
> --
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