145fe6f7dSsrinivas pandruvada /* 245fe6f7dSsrinivas pandruvada * HID Sensors Driver 345fe6f7dSsrinivas pandruvada * Copyright (c) 2012, Intel Corporation. 445fe6f7dSsrinivas pandruvada * 545fe6f7dSsrinivas pandruvada * This program is free software; you can redistribute it and/or modify it 645fe6f7dSsrinivas pandruvada * under the terms and conditions of the GNU General Public License, 745fe6f7dSsrinivas pandruvada * version 2, as published by the Free Software Foundation. 845fe6f7dSsrinivas pandruvada * 945fe6f7dSsrinivas pandruvada * This program is distributed in the hope it will be useful, but WITHOUT 1045fe6f7dSsrinivas pandruvada * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1145fe6f7dSsrinivas pandruvada * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 1245fe6f7dSsrinivas pandruvada * more details. 1345fe6f7dSsrinivas pandruvada * 1445fe6f7dSsrinivas pandruvada * You should have received a copy of the GNU General Public License along with 1545fe6f7dSsrinivas pandruvada * this program; if not, write to the Free Software Foundation, Inc., 1645fe6f7dSsrinivas pandruvada * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 1745fe6f7dSsrinivas pandruvada * 1845fe6f7dSsrinivas pandruvada */ 1945fe6f7dSsrinivas pandruvada #include <linux/device.h> 2045fe6f7dSsrinivas pandruvada #include <linux/platform_device.h> 2145fe6f7dSsrinivas pandruvada #include <linux/module.h> 2245fe6f7dSsrinivas pandruvada #include <linux/interrupt.h> 2345fe6f7dSsrinivas pandruvada #include <linux/irq.h> 2445fe6f7dSsrinivas pandruvada #include <linux/slab.h> 25c6399453SSrinivas Pandruvada #include <linux/delay.h> 2645fe6f7dSsrinivas pandruvada #include <linux/hid-sensor-hub.h> 2745fe6f7dSsrinivas pandruvada #include <linux/iio/iio.h> 2845fe6f7dSsrinivas pandruvada #include <linux/iio/sysfs.h> 2945fe6f7dSsrinivas pandruvada #include <linux/iio/buffer.h> 3045fe6f7dSsrinivas pandruvada #include <linux/iio/trigger_consumer.h> 3145fe6f7dSsrinivas pandruvada #include <linux/iio/triggered_buffer.h> 3245fe6f7dSsrinivas pandruvada #include "../common/hid-sensors/hid-sensor-trigger.h" 3345fe6f7dSsrinivas pandruvada 3445fe6f7dSsrinivas pandruvada enum accel_3d_channel { 3545fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_X, 3645fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_Y, 3745fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_Z, 3845fe6f7dSsrinivas pandruvada ACCEL_3D_CHANNEL_MAX, 3945fe6f7dSsrinivas pandruvada }; 4045fe6f7dSsrinivas pandruvada 4145fe6f7dSsrinivas pandruvada struct accel_3d_state { 4245fe6f7dSsrinivas pandruvada struct hid_sensor_hub_callbacks callbacks; 43e07c6d17SAlexander Holler struct hid_sensor_common common_attributes; 4445fe6f7dSsrinivas pandruvada struct hid_sensor_hub_attribute_info accel[ACCEL_3D_CHANNEL_MAX]; 4545fe6f7dSsrinivas pandruvada u32 accel_val[ACCEL_3D_CHANNEL_MAX]; 4673a24988SSrinivas Pandruvada int scale_pre_decml; 4773a24988SSrinivas Pandruvada int scale_post_decml; 4873a24988SSrinivas Pandruvada int scale_precision; 4973a24988SSrinivas Pandruvada int value_offset; 5045fe6f7dSsrinivas pandruvada }; 5145fe6f7dSsrinivas pandruvada 5245fe6f7dSsrinivas pandruvada static const u32 accel_3d_addresses[ACCEL_3D_CHANNEL_MAX] = { 5345fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_X_AXIS, 5445fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_Y_AXIS, 5545fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_Z_AXIS 5645fe6f7dSsrinivas pandruvada }; 5745fe6f7dSsrinivas pandruvada 5845fe6f7dSsrinivas pandruvada /* Channel definitions */ 5945fe6f7dSsrinivas pandruvada static const struct iio_chan_spec accel_3d_channels[] = { 6045fe6f7dSsrinivas pandruvada { 6145fe6f7dSsrinivas pandruvada .type = IIO_ACCEL, 6245fe6f7dSsrinivas pandruvada .modified = 1, 6345fe6f7dSsrinivas pandruvada .channel2 = IIO_MOD_X, 64c6399453SSrinivas Pandruvada .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 65ecbe18f2SJonathan Cameron .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 66ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SCALE) | 67ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SAMP_FREQ) | 68ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_HYSTERESIS), 6945fe6f7dSsrinivas pandruvada .scan_index = CHANNEL_SCAN_INDEX_X, 7045fe6f7dSsrinivas pandruvada }, { 7145fe6f7dSsrinivas pandruvada .type = IIO_ACCEL, 7245fe6f7dSsrinivas pandruvada .modified = 1, 7345fe6f7dSsrinivas pandruvada .channel2 = IIO_MOD_Y, 74c6399453SSrinivas Pandruvada .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 75ecbe18f2SJonathan Cameron .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 76ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SCALE) | 77ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SAMP_FREQ) | 78ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_HYSTERESIS), 7945fe6f7dSsrinivas pandruvada .scan_index = CHANNEL_SCAN_INDEX_Y, 8045fe6f7dSsrinivas pandruvada }, { 8145fe6f7dSsrinivas pandruvada .type = IIO_ACCEL, 8245fe6f7dSsrinivas pandruvada .modified = 1, 8345fe6f7dSsrinivas pandruvada .channel2 = IIO_MOD_Z, 84c6399453SSrinivas Pandruvada .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 85ecbe18f2SJonathan Cameron .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 86ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SCALE) | 87ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SAMP_FREQ) | 88ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_HYSTERESIS), 8945fe6f7dSsrinivas pandruvada .scan_index = CHANNEL_SCAN_INDEX_Z, 9045fe6f7dSsrinivas pandruvada } 9145fe6f7dSsrinivas pandruvada }; 9245fe6f7dSsrinivas pandruvada 9345fe6f7dSsrinivas pandruvada /* Adjust channel real bits based on report descriptor */ 9445fe6f7dSsrinivas pandruvada static void accel_3d_adjust_channel_bit_mask(struct iio_chan_spec *channels, 9545fe6f7dSsrinivas pandruvada int channel, int size) 9645fe6f7dSsrinivas pandruvada { 9745fe6f7dSsrinivas pandruvada channels[channel].scan_type.sign = 's'; 9845fe6f7dSsrinivas pandruvada /* Real storage bits will change based on the report desc. */ 9945fe6f7dSsrinivas pandruvada channels[channel].scan_type.realbits = size * 8; 10045fe6f7dSsrinivas pandruvada /* Maximum size of a sample to capture is u32 */ 10145fe6f7dSsrinivas pandruvada channels[channel].scan_type.storagebits = sizeof(u32) * 8; 10245fe6f7dSsrinivas pandruvada } 10345fe6f7dSsrinivas pandruvada 10445fe6f7dSsrinivas pandruvada /* Channel read_raw handler */ 10545fe6f7dSsrinivas pandruvada static int accel_3d_read_raw(struct iio_dev *indio_dev, 10645fe6f7dSsrinivas pandruvada struct iio_chan_spec const *chan, 10745fe6f7dSsrinivas pandruvada int *val, int *val2, 10845fe6f7dSsrinivas pandruvada long mask) 10945fe6f7dSsrinivas pandruvada { 11045fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 11145fe6f7dSsrinivas pandruvada int report_id = -1; 11245fe6f7dSsrinivas pandruvada u32 address; 11345fe6f7dSsrinivas pandruvada int ret_type; 114c6399453SSrinivas Pandruvada s32 poll_value; 11545fe6f7dSsrinivas pandruvada 11645fe6f7dSsrinivas pandruvada *val = 0; 11745fe6f7dSsrinivas pandruvada *val2 = 0; 11845fe6f7dSsrinivas pandruvada switch (mask) { 11945fe6f7dSsrinivas pandruvada case 0: 120c6399453SSrinivas Pandruvada poll_value = hid_sensor_read_poll_value( 121c6399453SSrinivas Pandruvada &accel_state->common_attributes); 122c6399453SSrinivas Pandruvada if (poll_value < 0) 123c6399453SSrinivas Pandruvada return -EINVAL; 124c6399453SSrinivas Pandruvada 125c6399453SSrinivas Pandruvada hid_sensor_power_state(&accel_state->common_attributes, true); 126c6399453SSrinivas Pandruvada msleep_interruptible(poll_value * 2); 12745fe6f7dSsrinivas pandruvada report_id = accel_state->accel[chan->scan_index].report_id; 12845fe6f7dSsrinivas pandruvada address = accel_3d_addresses[chan->scan_index]; 12945fe6f7dSsrinivas pandruvada if (report_id >= 0) 13045fe6f7dSsrinivas pandruvada *val = sensor_hub_input_attr_get_raw_value( 13145fe6f7dSsrinivas pandruvada accel_state->common_attributes.hsdev, 13245fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_3D, address, 133*b3f4737dSSrinivas Pandruvada report_id, 134*b3f4737dSSrinivas Pandruvada SENSOR_HUB_SYNC); 13545fe6f7dSsrinivas pandruvada else { 13645fe6f7dSsrinivas pandruvada *val = 0; 137c6399453SSrinivas Pandruvada hid_sensor_power_state(&accel_state->common_attributes, 138c6399453SSrinivas Pandruvada false); 13945fe6f7dSsrinivas pandruvada return -EINVAL; 14045fe6f7dSsrinivas pandruvada } 141c6399453SSrinivas Pandruvada hid_sensor_power_state(&accel_state->common_attributes, false); 14245fe6f7dSsrinivas pandruvada ret_type = IIO_VAL_INT; 14345fe6f7dSsrinivas pandruvada break; 14445fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_SCALE: 14573a24988SSrinivas Pandruvada *val = accel_state->scale_pre_decml; 14673a24988SSrinivas Pandruvada *val2 = accel_state->scale_post_decml; 14773a24988SSrinivas Pandruvada ret_type = accel_state->scale_precision; 14845fe6f7dSsrinivas pandruvada break; 14945fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_OFFSET: 15073a24988SSrinivas Pandruvada *val = accel_state->value_offset; 15145fe6f7dSsrinivas pandruvada ret_type = IIO_VAL_INT; 15245fe6f7dSsrinivas pandruvada break; 15345fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_SAMP_FREQ: 1542f084c17SSachin Kamat ret_type = hid_sensor_read_samp_freq_value( 15545fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 15645fe6f7dSsrinivas pandruvada break; 15745fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_HYSTERESIS: 1582f084c17SSachin Kamat ret_type = hid_sensor_read_raw_hyst_value( 15945fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 16045fe6f7dSsrinivas pandruvada break; 16145fe6f7dSsrinivas pandruvada default: 16245fe6f7dSsrinivas pandruvada ret_type = -EINVAL; 16345fe6f7dSsrinivas pandruvada break; 16445fe6f7dSsrinivas pandruvada } 16545fe6f7dSsrinivas pandruvada 16645fe6f7dSsrinivas pandruvada return ret_type; 16745fe6f7dSsrinivas pandruvada } 16845fe6f7dSsrinivas pandruvada 16945fe6f7dSsrinivas pandruvada /* Channel write_raw handler */ 17045fe6f7dSsrinivas pandruvada static int accel_3d_write_raw(struct iio_dev *indio_dev, 17145fe6f7dSsrinivas pandruvada struct iio_chan_spec const *chan, 17245fe6f7dSsrinivas pandruvada int val, 17345fe6f7dSsrinivas pandruvada int val2, 17445fe6f7dSsrinivas pandruvada long mask) 17545fe6f7dSsrinivas pandruvada { 17645fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 17745fe6f7dSsrinivas pandruvada int ret = 0; 17845fe6f7dSsrinivas pandruvada 17945fe6f7dSsrinivas pandruvada switch (mask) { 18045fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_SAMP_FREQ: 18145fe6f7dSsrinivas pandruvada ret = hid_sensor_write_samp_freq_value( 18245fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 18345fe6f7dSsrinivas pandruvada break; 18445fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_HYSTERESIS: 18545fe6f7dSsrinivas pandruvada ret = hid_sensor_write_raw_hyst_value( 18645fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 18745fe6f7dSsrinivas pandruvada break; 18845fe6f7dSsrinivas pandruvada default: 18945fe6f7dSsrinivas pandruvada ret = -EINVAL; 19045fe6f7dSsrinivas pandruvada } 19145fe6f7dSsrinivas pandruvada 19245fe6f7dSsrinivas pandruvada return ret; 19345fe6f7dSsrinivas pandruvada } 19445fe6f7dSsrinivas pandruvada 19545fe6f7dSsrinivas pandruvada static const struct iio_info accel_3d_info = { 19645fe6f7dSsrinivas pandruvada .driver_module = THIS_MODULE, 19745fe6f7dSsrinivas pandruvada .read_raw = &accel_3d_read_raw, 19845fe6f7dSsrinivas pandruvada .write_raw = &accel_3d_write_raw, 19945fe6f7dSsrinivas pandruvada }; 20045fe6f7dSsrinivas pandruvada 20145fe6f7dSsrinivas pandruvada /* Function to push data to buffer */ 2028c60c7e7SLars-Peter Clausen static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data, 2038c60c7e7SLars-Peter Clausen int len) 20445fe6f7dSsrinivas pandruvada { 20545fe6f7dSsrinivas pandruvada dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); 2068c60c7e7SLars-Peter Clausen iio_push_to_buffers(indio_dev, data); 20745fe6f7dSsrinivas pandruvada } 20845fe6f7dSsrinivas pandruvada 20945fe6f7dSsrinivas pandruvada /* Callback handler to send event after all samples are received and captured */ 21045fe6f7dSsrinivas pandruvada static int accel_3d_proc_event(struct hid_sensor_hub_device *hsdev, 21145fe6f7dSsrinivas pandruvada unsigned usage_id, 21245fe6f7dSsrinivas pandruvada void *priv) 21345fe6f7dSsrinivas pandruvada { 21445fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev = platform_get_drvdata(priv); 21545fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 21645fe6f7dSsrinivas pandruvada 21756ff6be6SSrinivas Pandruvada dev_dbg(&indio_dev->dev, "accel_3d_proc_event\n"); 21856ff6be6SSrinivas Pandruvada if (atomic_read(&accel_state->common_attributes.data_ready)) 21945fe6f7dSsrinivas pandruvada hid_sensor_push_data(indio_dev, 2208c60c7e7SLars-Peter Clausen accel_state->accel_val, 22145fe6f7dSsrinivas pandruvada sizeof(accel_state->accel_val)); 22245fe6f7dSsrinivas pandruvada 22345fe6f7dSsrinivas pandruvada return 0; 22445fe6f7dSsrinivas pandruvada } 22545fe6f7dSsrinivas pandruvada 22645fe6f7dSsrinivas pandruvada /* Capture samples in local storage */ 22745fe6f7dSsrinivas pandruvada static int accel_3d_capture_sample(struct hid_sensor_hub_device *hsdev, 22845fe6f7dSsrinivas pandruvada unsigned usage_id, 22945fe6f7dSsrinivas pandruvada size_t raw_len, char *raw_data, 23045fe6f7dSsrinivas pandruvada void *priv) 23145fe6f7dSsrinivas pandruvada { 23245fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev = platform_get_drvdata(priv); 23345fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 23445fe6f7dSsrinivas pandruvada int offset; 23545fe6f7dSsrinivas pandruvada int ret = -EINVAL; 23645fe6f7dSsrinivas pandruvada 23745fe6f7dSsrinivas pandruvada switch (usage_id) { 23845fe6f7dSsrinivas pandruvada case HID_USAGE_SENSOR_ACCEL_X_AXIS: 23945fe6f7dSsrinivas pandruvada case HID_USAGE_SENSOR_ACCEL_Y_AXIS: 24045fe6f7dSsrinivas pandruvada case HID_USAGE_SENSOR_ACCEL_Z_AXIS: 24145fe6f7dSsrinivas pandruvada offset = usage_id - HID_USAGE_SENSOR_ACCEL_X_AXIS; 24245fe6f7dSsrinivas pandruvada accel_state->accel_val[CHANNEL_SCAN_INDEX_X + offset] = 24345fe6f7dSsrinivas pandruvada *(u32 *)raw_data; 24445fe6f7dSsrinivas pandruvada ret = 0; 24545fe6f7dSsrinivas pandruvada break; 24645fe6f7dSsrinivas pandruvada default: 24745fe6f7dSsrinivas pandruvada break; 24845fe6f7dSsrinivas pandruvada } 24945fe6f7dSsrinivas pandruvada 25045fe6f7dSsrinivas pandruvada return ret; 25145fe6f7dSsrinivas pandruvada } 25245fe6f7dSsrinivas pandruvada 25345fe6f7dSsrinivas pandruvada /* Parse report which is specific to an usage id*/ 25445fe6f7dSsrinivas pandruvada static int accel_3d_parse_report(struct platform_device *pdev, 25545fe6f7dSsrinivas pandruvada struct hid_sensor_hub_device *hsdev, 25645fe6f7dSsrinivas pandruvada struct iio_chan_spec *channels, 25745fe6f7dSsrinivas pandruvada unsigned usage_id, 25845fe6f7dSsrinivas pandruvada struct accel_3d_state *st) 25945fe6f7dSsrinivas pandruvada { 26045fe6f7dSsrinivas pandruvada int ret; 26145fe6f7dSsrinivas pandruvada int i; 26245fe6f7dSsrinivas pandruvada 26345fe6f7dSsrinivas pandruvada for (i = 0; i <= CHANNEL_SCAN_INDEX_Z; ++i) { 26445fe6f7dSsrinivas pandruvada ret = sensor_hub_input_get_attribute_info(hsdev, 26545fe6f7dSsrinivas pandruvada HID_INPUT_REPORT, 26645fe6f7dSsrinivas pandruvada usage_id, 26745fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_X_AXIS + i, 26845fe6f7dSsrinivas pandruvada &st->accel[CHANNEL_SCAN_INDEX_X + i]); 26945fe6f7dSsrinivas pandruvada if (ret < 0) 27045fe6f7dSsrinivas pandruvada break; 27145fe6f7dSsrinivas pandruvada accel_3d_adjust_channel_bit_mask(channels, 27245fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_X + i, 27345fe6f7dSsrinivas pandruvada st->accel[CHANNEL_SCAN_INDEX_X + i].size); 27445fe6f7dSsrinivas pandruvada } 27545fe6f7dSsrinivas pandruvada dev_dbg(&pdev->dev, "accel_3d %x:%x, %x:%x, %x:%x\n", 27645fe6f7dSsrinivas pandruvada st->accel[0].index, 27745fe6f7dSsrinivas pandruvada st->accel[0].report_id, 27845fe6f7dSsrinivas pandruvada st->accel[1].index, st->accel[1].report_id, 27945fe6f7dSsrinivas pandruvada st->accel[2].index, st->accel[2].report_id); 28045fe6f7dSsrinivas pandruvada 28173a24988SSrinivas Pandruvada st->scale_precision = hid_sensor_format_scale( 28273a24988SSrinivas Pandruvada HID_USAGE_SENSOR_ACCEL_3D, 28373a24988SSrinivas Pandruvada &st->accel[CHANNEL_SCAN_INDEX_X], 28473a24988SSrinivas Pandruvada &st->scale_pre_decml, &st->scale_post_decml); 28573a24988SSrinivas Pandruvada 28664528d03SSrinivas Pandruvada /* Set Sensitivity field ids, when there is no individual modifier */ 28764528d03SSrinivas Pandruvada if (st->common_attributes.sensitivity.index < 0) { 28864528d03SSrinivas Pandruvada sensor_hub_input_get_attribute_info(hsdev, 28964528d03SSrinivas Pandruvada HID_FEATURE_REPORT, usage_id, 29064528d03SSrinivas Pandruvada HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | 29164528d03SSrinivas Pandruvada HID_USAGE_SENSOR_DATA_ACCELERATION, 29264528d03SSrinivas Pandruvada &st->common_attributes.sensitivity); 29364528d03SSrinivas Pandruvada dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", 29464528d03SSrinivas Pandruvada st->common_attributes.sensitivity.index, 29564528d03SSrinivas Pandruvada st->common_attributes.sensitivity.report_id); 29664528d03SSrinivas Pandruvada } 29764528d03SSrinivas Pandruvada 29845fe6f7dSsrinivas pandruvada return ret; 29945fe6f7dSsrinivas pandruvada } 30045fe6f7dSsrinivas pandruvada 30145fe6f7dSsrinivas pandruvada /* Function to initialize the processing for usage id */ 302fc52692cSGreg Kroah-Hartman static int hid_accel_3d_probe(struct platform_device *pdev) 30345fe6f7dSsrinivas pandruvada { 30445fe6f7dSsrinivas pandruvada int ret = 0; 30545fe6f7dSsrinivas pandruvada static const char *name = "accel_3d"; 30645fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev; 30745fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state; 30845fe6f7dSsrinivas pandruvada struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 30945fe6f7dSsrinivas pandruvada struct iio_chan_spec *channels; 31045fe6f7dSsrinivas pandruvada 3116b545eedSSachin Kamat indio_dev = devm_iio_device_alloc(&pdev->dev, 3126b545eedSSachin Kamat sizeof(struct accel_3d_state)); 3136b545eedSSachin Kamat if (indio_dev == NULL) 3146b545eedSSachin Kamat return -ENOMEM; 3156b545eedSSachin Kamat 31645fe6f7dSsrinivas pandruvada platform_set_drvdata(pdev, indio_dev); 31745fe6f7dSsrinivas pandruvada 31845fe6f7dSsrinivas pandruvada accel_state = iio_priv(indio_dev); 31945fe6f7dSsrinivas pandruvada accel_state->common_attributes.hsdev = hsdev; 32045fe6f7dSsrinivas pandruvada accel_state->common_attributes.pdev = pdev; 32145fe6f7dSsrinivas pandruvada 32245fe6f7dSsrinivas pandruvada ret = hid_sensor_parse_common_attributes(hsdev, 32345fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_3D, 32445fe6f7dSsrinivas pandruvada &accel_state->common_attributes); 32545fe6f7dSsrinivas pandruvada if (ret) { 32645fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to setup common attributes\n"); 3276b545eedSSachin Kamat return ret; 32845fe6f7dSsrinivas pandruvada } 32945fe6f7dSsrinivas pandruvada 33064ebe955SAxel Lin channels = kmemdup(accel_3d_channels, sizeof(accel_3d_channels), 33145fe6f7dSsrinivas pandruvada GFP_KERNEL); 33245fe6f7dSsrinivas pandruvada if (!channels) { 33345fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to duplicate channels\n"); 3346b545eedSSachin Kamat return -ENOMEM; 33545fe6f7dSsrinivas pandruvada } 33645fe6f7dSsrinivas pandruvada 33745fe6f7dSsrinivas pandruvada ret = accel_3d_parse_report(pdev, hsdev, channels, 33845fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_3D, accel_state); 33945fe6f7dSsrinivas pandruvada if (ret) { 34045fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to setup attributes\n"); 34145fe6f7dSsrinivas pandruvada goto error_free_dev_mem; 34245fe6f7dSsrinivas pandruvada } 34345fe6f7dSsrinivas pandruvada 34445fe6f7dSsrinivas pandruvada indio_dev->channels = channels; 34545fe6f7dSsrinivas pandruvada indio_dev->num_channels = ARRAY_SIZE(accel_3d_channels); 34645fe6f7dSsrinivas pandruvada indio_dev->dev.parent = &pdev->dev; 34745fe6f7dSsrinivas pandruvada indio_dev->info = &accel_3d_info; 34845fe6f7dSsrinivas pandruvada indio_dev->name = name; 34945fe6f7dSsrinivas pandruvada indio_dev->modes = INDIO_DIRECT_MODE; 35045fe6f7dSsrinivas pandruvada 35145fe6f7dSsrinivas pandruvada ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, 35245fe6f7dSsrinivas pandruvada NULL, NULL); 35345fe6f7dSsrinivas pandruvada if (ret) { 35445fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to initialize trigger buffer\n"); 35545fe6f7dSsrinivas pandruvada goto error_free_dev_mem; 35645fe6f7dSsrinivas pandruvada } 35756ff6be6SSrinivas Pandruvada atomic_set(&accel_state->common_attributes.data_ready, 0); 35845fe6f7dSsrinivas pandruvada ret = hid_sensor_setup_trigger(indio_dev, name, 35945fe6f7dSsrinivas pandruvada &accel_state->common_attributes); 36045fe6f7dSsrinivas pandruvada if (ret < 0) { 36145fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "trigger setup failed\n"); 36245fe6f7dSsrinivas pandruvada goto error_unreg_buffer_funcs; 36345fe6f7dSsrinivas pandruvada } 36445fe6f7dSsrinivas pandruvada 36545fe6f7dSsrinivas pandruvada ret = iio_device_register(indio_dev); 36645fe6f7dSsrinivas pandruvada if (ret) { 36745fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "device register failed\n"); 36845fe6f7dSsrinivas pandruvada goto error_remove_trigger; 36945fe6f7dSsrinivas pandruvada } 37045fe6f7dSsrinivas pandruvada 37145fe6f7dSsrinivas pandruvada accel_state->callbacks.send_event = accel_3d_proc_event; 37245fe6f7dSsrinivas pandruvada accel_state->callbacks.capture_sample = accel_3d_capture_sample; 37345fe6f7dSsrinivas pandruvada accel_state->callbacks.pdev = pdev; 37445fe6f7dSsrinivas pandruvada ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_ACCEL_3D, 37545fe6f7dSsrinivas pandruvada &accel_state->callbacks); 37645fe6f7dSsrinivas pandruvada if (ret < 0) { 37745fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "callback reg failed\n"); 37845fe6f7dSsrinivas pandruvada goto error_iio_unreg; 37945fe6f7dSsrinivas pandruvada } 38045fe6f7dSsrinivas pandruvada 38145fe6f7dSsrinivas pandruvada return ret; 38245fe6f7dSsrinivas pandruvada 38345fe6f7dSsrinivas pandruvada error_iio_unreg: 38445fe6f7dSsrinivas pandruvada iio_device_unregister(indio_dev); 38545fe6f7dSsrinivas pandruvada error_remove_trigger: 386ec7f68e0SSrinivas Pandruvada hid_sensor_remove_trigger(&accel_state->common_attributes); 38745fe6f7dSsrinivas pandruvada error_unreg_buffer_funcs: 38845fe6f7dSsrinivas pandruvada iio_triggered_buffer_cleanup(indio_dev); 38945fe6f7dSsrinivas pandruvada error_free_dev_mem: 39045fe6f7dSsrinivas pandruvada kfree(indio_dev->channels); 39145fe6f7dSsrinivas pandruvada return ret; 39245fe6f7dSsrinivas pandruvada } 39345fe6f7dSsrinivas pandruvada 39445fe6f7dSsrinivas pandruvada /* Function to deinitialize the processing for usage id */ 395fc52692cSGreg Kroah-Hartman static int hid_accel_3d_remove(struct platform_device *pdev) 39645fe6f7dSsrinivas pandruvada { 39745fe6f7dSsrinivas pandruvada struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 39845fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev = platform_get_drvdata(pdev); 399ec7f68e0SSrinivas Pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 40045fe6f7dSsrinivas pandruvada 40145fe6f7dSsrinivas pandruvada sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_ACCEL_3D); 40245fe6f7dSsrinivas pandruvada iio_device_unregister(indio_dev); 403ec7f68e0SSrinivas Pandruvada hid_sensor_remove_trigger(&accel_state->common_attributes); 40445fe6f7dSsrinivas pandruvada iio_triggered_buffer_cleanup(indio_dev); 40545fe6f7dSsrinivas pandruvada kfree(indio_dev->channels); 40645fe6f7dSsrinivas pandruvada 40745fe6f7dSsrinivas pandruvada return 0; 40845fe6f7dSsrinivas pandruvada } 40945fe6f7dSsrinivas pandruvada 41066c721f7SAlexander Holler static struct platform_device_id hid_accel_3d_ids[] = { 41166c721f7SAlexander Holler { 41266c721f7SAlexander Holler /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ 41366c721f7SAlexander Holler .name = "HID-SENSOR-200073", 41466c721f7SAlexander Holler }, 41566c721f7SAlexander Holler { /* sentinel */ } 41666c721f7SAlexander Holler }; 41766c721f7SAlexander Holler MODULE_DEVICE_TABLE(platform, hid_accel_3d_ids); 41866c721f7SAlexander Holler 41945fe6f7dSsrinivas pandruvada static struct platform_driver hid_accel_3d_platform_driver = { 42066c721f7SAlexander Holler .id_table = hid_accel_3d_ids, 42145fe6f7dSsrinivas pandruvada .driver = { 42266c721f7SAlexander Holler .name = KBUILD_MODNAME, 42345fe6f7dSsrinivas pandruvada }, 42445fe6f7dSsrinivas pandruvada .probe = hid_accel_3d_probe, 42545fe6f7dSsrinivas pandruvada .remove = hid_accel_3d_remove, 42645fe6f7dSsrinivas pandruvada }; 42745fe6f7dSsrinivas pandruvada module_platform_driver(hid_accel_3d_platform_driver); 42845fe6f7dSsrinivas pandruvada 42945fe6f7dSsrinivas pandruvada MODULE_DESCRIPTION("HID Sensor Accel 3D"); 43045fe6f7dSsrinivas pandruvada MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); 43145fe6f7dSsrinivas pandruvada MODULE_LICENSE("GPL"); 432