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> 2545fe6f7dSsrinivas pandruvada #include <linux/hid-sensor-hub.h> 2645fe6f7dSsrinivas pandruvada #include <linux/iio/iio.h> 2745fe6f7dSsrinivas pandruvada #include <linux/iio/sysfs.h> 2845fe6f7dSsrinivas pandruvada #include <linux/iio/buffer.h> 2945fe6f7dSsrinivas pandruvada #include <linux/iio/trigger_consumer.h> 3045fe6f7dSsrinivas pandruvada #include <linux/iio/triggered_buffer.h> 3145fe6f7dSsrinivas pandruvada #include "../common/hid-sensors/hid-sensor-trigger.h" 3245fe6f7dSsrinivas pandruvada 3345fe6f7dSsrinivas pandruvada enum accel_3d_channel { 3445fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_X, 3545fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_Y, 3645fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_Z, 3745fe6f7dSsrinivas pandruvada ACCEL_3D_CHANNEL_MAX, 3845fe6f7dSsrinivas pandruvada }; 3945fe6f7dSsrinivas pandruvada 4045fe6f7dSsrinivas pandruvada struct accel_3d_state { 4145fe6f7dSsrinivas pandruvada struct hid_sensor_hub_callbacks callbacks; 42e07c6d17SAlexander Holler struct hid_sensor_common common_attributes; 4345fe6f7dSsrinivas pandruvada struct hid_sensor_hub_attribute_info accel[ACCEL_3D_CHANNEL_MAX]; 4445fe6f7dSsrinivas pandruvada u32 accel_val[ACCEL_3D_CHANNEL_MAX]; 4545fe6f7dSsrinivas pandruvada }; 4645fe6f7dSsrinivas pandruvada 4745fe6f7dSsrinivas pandruvada static const u32 accel_3d_addresses[ACCEL_3D_CHANNEL_MAX] = { 4845fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_X_AXIS, 4945fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_Y_AXIS, 5045fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_Z_AXIS 5145fe6f7dSsrinivas pandruvada }; 5245fe6f7dSsrinivas pandruvada 5345fe6f7dSsrinivas pandruvada /* Channel definitions */ 5445fe6f7dSsrinivas pandruvada static const struct iio_chan_spec accel_3d_channels[] = { 5545fe6f7dSsrinivas pandruvada { 5645fe6f7dSsrinivas pandruvada .type = IIO_ACCEL, 5745fe6f7dSsrinivas pandruvada .modified = 1, 5845fe6f7dSsrinivas pandruvada .channel2 = IIO_MOD_X, 59ecbe18f2SJonathan Cameron .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 60ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SCALE) | 61ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SAMP_FREQ) | 62ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_HYSTERESIS), 6345fe6f7dSsrinivas pandruvada .scan_index = CHANNEL_SCAN_INDEX_X, 6445fe6f7dSsrinivas pandruvada }, { 6545fe6f7dSsrinivas pandruvada .type = IIO_ACCEL, 6645fe6f7dSsrinivas pandruvada .modified = 1, 6745fe6f7dSsrinivas pandruvada .channel2 = IIO_MOD_Y, 68ecbe18f2SJonathan Cameron .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 69ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SCALE) | 70ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SAMP_FREQ) | 71ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_HYSTERESIS), 7245fe6f7dSsrinivas pandruvada .scan_index = CHANNEL_SCAN_INDEX_Y, 7345fe6f7dSsrinivas pandruvada }, { 7445fe6f7dSsrinivas pandruvada .type = IIO_ACCEL, 7545fe6f7dSsrinivas pandruvada .modified = 1, 7645fe6f7dSsrinivas pandruvada .channel2 = IIO_MOD_Z, 77ecbe18f2SJonathan Cameron .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 78ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SCALE) | 79ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_SAMP_FREQ) | 80ecbe18f2SJonathan Cameron BIT(IIO_CHAN_INFO_HYSTERESIS), 8145fe6f7dSsrinivas pandruvada .scan_index = CHANNEL_SCAN_INDEX_Z, 8245fe6f7dSsrinivas pandruvada } 8345fe6f7dSsrinivas pandruvada }; 8445fe6f7dSsrinivas pandruvada 8545fe6f7dSsrinivas pandruvada /* Adjust channel real bits based on report descriptor */ 8645fe6f7dSsrinivas pandruvada static void accel_3d_adjust_channel_bit_mask(struct iio_chan_spec *channels, 8745fe6f7dSsrinivas pandruvada int channel, int size) 8845fe6f7dSsrinivas pandruvada { 8945fe6f7dSsrinivas pandruvada channels[channel].scan_type.sign = 's'; 9045fe6f7dSsrinivas pandruvada /* Real storage bits will change based on the report desc. */ 9145fe6f7dSsrinivas pandruvada channels[channel].scan_type.realbits = size * 8; 9245fe6f7dSsrinivas pandruvada /* Maximum size of a sample to capture is u32 */ 9345fe6f7dSsrinivas pandruvada channels[channel].scan_type.storagebits = sizeof(u32) * 8; 9445fe6f7dSsrinivas pandruvada } 9545fe6f7dSsrinivas pandruvada 9645fe6f7dSsrinivas pandruvada /* Channel read_raw handler */ 9745fe6f7dSsrinivas pandruvada static int accel_3d_read_raw(struct iio_dev *indio_dev, 9845fe6f7dSsrinivas pandruvada struct iio_chan_spec const *chan, 9945fe6f7dSsrinivas pandruvada int *val, int *val2, 10045fe6f7dSsrinivas pandruvada long mask) 10145fe6f7dSsrinivas pandruvada { 10245fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 10345fe6f7dSsrinivas pandruvada int report_id = -1; 10445fe6f7dSsrinivas pandruvada u32 address; 10545fe6f7dSsrinivas pandruvada int ret; 10645fe6f7dSsrinivas pandruvada int ret_type; 10745fe6f7dSsrinivas pandruvada 10845fe6f7dSsrinivas pandruvada *val = 0; 10945fe6f7dSsrinivas pandruvada *val2 = 0; 11045fe6f7dSsrinivas pandruvada switch (mask) { 11145fe6f7dSsrinivas pandruvada case 0: 11245fe6f7dSsrinivas pandruvada report_id = accel_state->accel[chan->scan_index].report_id; 11345fe6f7dSsrinivas pandruvada address = accel_3d_addresses[chan->scan_index]; 11445fe6f7dSsrinivas pandruvada if (report_id >= 0) 11545fe6f7dSsrinivas pandruvada *val = sensor_hub_input_attr_get_raw_value( 11645fe6f7dSsrinivas pandruvada accel_state->common_attributes.hsdev, 11745fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_3D, address, 11845fe6f7dSsrinivas pandruvada report_id); 11945fe6f7dSsrinivas pandruvada else { 12045fe6f7dSsrinivas pandruvada *val = 0; 12145fe6f7dSsrinivas pandruvada return -EINVAL; 12245fe6f7dSsrinivas pandruvada } 12345fe6f7dSsrinivas pandruvada ret_type = IIO_VAL_INT; 12445fe6f7dSsrinivas pandruvada break; 12545fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_SCALE: 12645fe6f7dSsrinivas pandruvada *val = accel_state->accel[CHANNEL_SCAN_INDEX_X].units; 12745fe6f7dSsrinivas pandruvada ret_type = IIO_VAL_INT; 12845fe6f7dSsrinivas pandruvada break; 12945fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_OFFSET: 13045fe6f7dSsrinivas pandruvada *val = hid_sensor_convert_exponent( 13145fe6f7dSsrinivas pandruvada accel_state->accel[CHANNEL_SCAN_INDEX_X].unit_expo); 13245fe6f7dSsrinivas pandruvada ret_type = IIO_VAL_INT; 13345fe6f7dSsrinivas pandruvada break; 13445fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_SAMP_FREQ: 13545fe6f7dSsrinivas pandruvada ret = hid_sensor_read_samp_freq_value( 13645fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 13745fe6f7dSsrinivas pandruvada ret_type = IIO_VAL_INT_PLUS_MICRO; 13845fe6f7dSsrinivas pandruvada break; 13945fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_HYSTERESIS: 14045fe6f7dSsrinivas pandruvada ret = hid_sensor_read_raw_hyst_value( 14145fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 14245fe6f7dSsrinivas pandruvada ret_type = IIO_VAL_INT_PLUS_MICRO; 14345fe6f7dSsrinivas pandruvada break; 14445fe6f7dSsrinivas pandruvada default: 14545fe6f7dSsrinivas pandruvada ret_type = -EINVAL; 14645fe6f7dSsrinivas pandruvada break; 14745fe6f7dSsrinivas pandruvada } 14845fe6f7dSsrinivas pandruvada 14945fe6f7dSsrinivas pandruvada return ret_type; 15045fe6f7dSsrinivas pandruvada } 15145fe6f7dSsrinivas pandruvada 15245fe6f7dSsrinivas pandruvada /* Channel write_raw handler */ 15345fe6f7dSsrinivas pandruvada static int accel_3d_write_raw(struct iio_dev *indio_dev, 15445fe6f7dSsrinivas pandruvada struct iio_chan_spec const *chan, 15545fe6f7dSsrinivas pandruvada int val, 15645fe6f7dSsrinivas pandruvada int val2, 15745fe6f7dSsrinivas pandruvada long mask) 15845fe6f7dSsrinivas pandruvada { 15945fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 16045fe6f7dSsrinivas pandruvada int ret = 0; 16145fe6f7dSsrinivas pandruvada 16245fe6f7dSsrinivas pandruvada switch (mask) { 16345fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_SAMP_FREQ: 16445fe6f7dSsrinivas pandruvada ret = hid_sensor_write_samp_freq_value( 16545fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 16645fe6f7dSsrinivas pandruvada break; 16745fe6f7dSsrinivas pandruvada case IIO_CHAN_INFO_HYSTERESIS: 16845fe6f7dSsrinivas pandruvada ret = hid_sensor_write_raw_hyst_value( 16945fe6f7dSsrinivas pandruvada &accel_state->common_attributes, val, val2); 17045fe6f7dSsrinivas pandruvada break; 17145fe6f7dSsrinivas pandruvada default: 17245fe6f7dSsrinivas pandruvada ret = -EINVAL; 17345fe6f7dSsrinivas pandruvada } 17445fe6f7dSsrinivas pandruvada 17545fe6f7dSsrinivas pandruvada return ret; 17645fe6f7dSsrinivas pandruvada } 17745fe6f7dSsrinivas pandruvada 17845fe6f7dSsrinivas pandruvada static const struct iio_info accel_3d_info = { 17945fe6f7dSsrinivas pandruvada .driver_module = THIS_MODULE, 18045fe6f7dSsrinivas pandruvada .read_raw = &accel_3d_read_raw, 18145fe6f7dSsrinivas pandruvada .write_raw = &accel_3d_write_raw, 18245fe6f7dSsrinivas pandruvada }; 18345fe6f7dSsrinivas pandruvada 18445fe6f7dSsrinivas pandruvada /* Function to push data to buffer */ 185*8c60c7e7SLars-Peter Clausen static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data, 186*8c60c7e7SLars-Peter Clausen int len) 18745fe6f7dSsrinivas pandruvada { 18845fe6f7dSsrinivas pandruvada dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); 189*8c60c7e7SLars-Peter Clausen iio_push_to_buffers(indio_dev, data); 19045fe6f7dSsrinivas pandruvada } 19145fe6f7dSsrinivas pandruvada 19245fe6f7dSsrinivas pandruvada /* Callback handler to send event after all samples are received and captured */ 19345fe6f7dSsrinivas pandruvada static int accel_3d_proc_event(struct hid_sensor_hub_device *hsdev, 19445fe6f7dSsrinivas pandruvada unsigned usage_id, 19545fe6f7dSsrinivas pandruvada void *priv) 19645fe6f7dSsrinivas pandruvada { 19745fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev = platform_get_drvdata(priv); 19845fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 19945fe6f7dSsrinivas pandruvada 20045fe6f7dSsrinivas pandruvada dev_dbg(&indio_dev->dev, "accel_3d_proc_event [%d]\n", 20145fe6f7dSsrinivas pandruvada accel_state->common_attributes.data_ready); 20245fe6f7dSsrinivas pandruvada if (accel_state->common_attributes.data_ready) 20345fe6f7dSsrinivas pandruvada hid_sensor_push_data(indio_dev, 204*8c60c7e7SLars-Peter Clausen accel_state->accel_val, 20545fe6f7dSsrinivas pandruvada sizeof(accel_state->accel_val)); 20645fe6f7dSsrinivas pandruvada 20745fe6f7dSsrinivas pandruvada return 0; 20845fe6f7dSsrinivas pandruvada } 20945fe6f7dSsrinivas pandruvada 21045fe6f7dSsrinivas pandruvada /* Capture samples in local storage */ 21145fe6f7dSsrinivas pandruvada static int accel_3d_capture_sample(struct hid_sensor_hub_device *hsdev, 21245fe6f7dSsrinivas pandruvada unsigned usage_id, 21345fe6f7dSsrinivas pandruvada size_t raw_len, char *raw_data, 21445fe6f7dSsrinivas pandruvada void *priv) 21545fe6f7dSsrinivas pandruvada { 21645fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev = platform_get_drvdata(priv); 21745fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state = iio_priv(indio_dev); 21845fe6f7dSsrinivas pandruvada int offset; 21945fe6f7dSsrinivas pandruvada int ret = -EINVAL; 22045fe6f7dSsrinivas pandruvada 22145fe6f7dSsrinivas pandruvada switch (usage_id) { 22245fe6f7dSsrinivas pandruvada case HID_USAGE_SENSOR_ACCEL_X_AXIS: 22345fe6f7dSsrinivas pandruvada case HID_USAGE_SENSOR_ACCEL_Y_AXIS: 22445fe6f7dSsrinivas pandruvada case HID_USAGE_SENSOR_ACCEL_Z_AXIS: 22545fe6f7dSsrinivas pandruvada offset = usage_id - HID_USAGE_SENSOR_ACCEL_X_AXIS; 22645fe6f7dSsrinivas pandruvada accel_state->accel_val[CHANNEL_SCAN_INDEX_X + offset] = 22745fe6f7dSsrinivas pandruvada *(u32 *)raw_data; 22845fe6f7dSsrinivas pandruvada ret = 0; 22945fe6f7dSsrinivas pandruvada break; 23045fe6f7dSsrinivas pandruvada default: 23145fe6f7dSsrinivas pandruvada break; 23245fe6f7dSsrinivas pandruvada } 23345fe6f7dSsrinivas pandruvada 23445fe6f7dSsrinivas pandruvada return ret; 23545fe6f7dSsrinivas pandruvada } 23645fe6f7dSsrinivas pandruvada 23745fe6f7dSsrinivas pandruvada /* Parse report which is specific to an usage id*/ 23845fe6f7dSsrinivas pandruvada static int accel_3d_parse_report(struct platform_device *pdev, 23945fe6f7dSsrinivas pandruvada struct hid_sensor_hub_device *hsdev, 24045fe6f7dSsrinivas pandruvada struct iio_chan_spec *channels, 24145fe6f7dSsrinivas pandruvada unsigned usage_id, 24245fe6f7dSsrinivas pandruvada struct accel_3d_state *st) 24345fe6f7dSsrinivas pandruvada { 24445fe6f7dSsrinivas pandruvada int ret; 24545fe6f7dSsrinivas pandruvada int i; 24645fe6f7dSsrinivas pandruvada 24745fe6f7dSsrinivas pandruvada for (i = 0; i <= CHANNEL_SCAN_INDEX_Z; ++i) { 24845fe6f7dSsrinivas pandruvada ret = sensor_hub_input_get_attribute_info(hsdev, 24945fe6f7dSsrinivas pandruvada HID_INPUT_REPORT, 25045fe6f7dSsrinivas pandruvada usage_id, 25145fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_X_AXIS + i, 25245fe6f7dSsrinivas pandruvada &st->accel[CHANNEL_SCAN_INDEX_X + i]); 25345fe6f7dSsrinivas pandruvada if (ret < 0) 25445fe6f7dSsrinivas pandruvada break; 25545fe6f7dSsrinivas pandruvada accel_3d_adjust_channel_bit_mask(channels, 25645fe6f7dSsrinivas pandruvada CHANNEL_SCAN_INDEX_X + i, 25745fe6f7dSsrinivas pandruvada st->accel[CHANNEL_SCAN_INDEX_X + i].size); 25845fe6f7dSsrinivas pandruvada } 25945fe6f7dSsrinivas pandruvada dev_dbg(&pdev->dev, "accel_3d %x:%x, %x:%x, %x:%x\n", 26045fe6f7dSsrinivas pandruvada st->accel[0].index, 26145fe6f7dSsrinivas pandruvada st->accel[0].report_id, 26245fe6f7dSsrinivas pandruvada st->accel[1].index, st->accel[1].report_id, 26345fe6f7dSsrinivas pandruvada st->accel[2].index, st->accel[2].report_id); 26445fe6f7dSsrinivas pandruvada 26545fe6f7dSsrinivas pandruvada return ret; 26645fe6f7dSsrinivas pandruvada } 26745fe6f7dSsrinivas pandruvada 26845fe6f7dSsrinivas pandruvada /* Function to initialize the processing for usage id */ 269fc52692cSGreg Kroah-Hartman static int hid_accel_3d_probe(struct platform_device *pdev) 27045fe6f7dSsrinivas pandruvada { 27145fe6f7dSsrinivas pandruvada int ret = 0; 27245fe6f7dSsrinivas pandruvada static const char *name = "accel_3d"; 27345fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev; 27445fe6f7dSsrinivas pandruvada struct accel_3d_state *accel_state; 27545fe6f7dSsrinivas pandruvada struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 27645fe6f7dSsrinivas pandruvada struct iio_chan_spec *channels; 27745fe6f7dSsrinivas pandruvada 2786b545eedSSachin Kamat indio_dev = devm_iio_device_alloc(&pdev->dev, 2796b545eedSSachin Kamat sizeof(struct accel_3d_state)); 2806b545eedSSachin Kamat if (indio_dev == NULL) 2816b545eedSSachin Kamat return -ENOMEM; 2826b545eedSSachin Kamat 28345fe6f7dSsrinivas pandruvada platform_set_drvdata(pdev, indio_dev); 28445fe6f7dSsrinivas pandruvada 28545fe6f7dSsrinivas pandruvada accel_state = iio_priv(indio_dev); 28645fe6f7dSsrinivas pandruvada accel_state->common_attributes.hsdev = hsdev; 28745fe6f7dSsrinivas pandruvada accel_state->common_attributes.pdev = pdev; 28845fe6f7dSsrinivas pandruvada 28945fe6f7dSsrinivas pandruvada ret = hid_sensor_parse_common_attributes(hsdev, 29045fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_3D, 29145fe6f7dSsrinivas pandruvada &accel_state->common_attributes); 29245fe6f7dSsrinivas pandruvada if (ret) { 29345fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to setup common attributes\n"); 2946b545eedSSachin Kamat return ret; 29545fe6f7dSsrinivas pandruvada } 29645fe6f7dSsrinivas pandruvada 29764ebe955SAxel Lin channels = kmemdup(accel_3d_channels, sizeof(accel_3d_channels), 29845fe6f7dSsrinivas pandruvada GFP_KERNEL); 29945fe6f7dSsrinivas pandruvada if (!channels) { 30045fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to duplicate channels\n"); 3016b545eedSSachin Kamat return -ENOMEM; 30245fe6f7dSsrinivas pandruvada } 30345fe6f7dSsrinivas pandruvada 30445fe6f7dSsrinivas pandruvada ret = accel_3d_parse_report(pdev, hsdev, channels, 30545fe6f7dSsrinivas pandruvada HID_USAGE_SENSOR_ACCEL_3D, accel_state); 30645fe6f7dSsrinivas pandruvada if (ret) { 30745fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to setup attributes\n"); 30845fe6f7dSsrinivas pandruvada goto error_free_dev_mem; 30945fe6f7dSsrinivas pandruvada } 31045fe6f7dSsrinivas pandruvada 31145fe6f7dSsrinivas pandruvada indio_dev->channels = channels; 31245fe6f7dSsrinivas pandruvada indio_dev->num_channels = ARRAY_SIZE(accel_3d_channels); 31345fe6f7dSsrinivas pandruvada indio_dev->dev.parent = &pdev->dev; 31445fe6f7dSsrinivas pandruvada indio_dev->info = &accel_3d_info; 31545fe6f7dSsrinivas pandruvada indio_dev->name = name; 31645fe6f7dSsrinivas pandruvada indio_dev->modes = INDIO_DIRECT_MODE; 31745fe6f7dSsrinivas pandruvada 31845fe6f7dSsrinivas pandruvada ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, 31945fe6f7dSsrinivas pandruvada NULL, NULL); 32045fe6f7dSsrinivas pandruvada if (ret) { 32145fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "failed to initialize trigger buffer\n"); 32245fe6f7dSsrinivas pandruvada goto error_free_dev_mem; 32345fe6f7dSsrinivas pandruvada } 32445fe6f7dSsrinivas pandruvada accel_state->common_attributes.data_ready = false; 32545fe6f7dSsrinivas pandruvada ret = hid_sensor_setup_trigger(indio_dev, name, 32645fe6f7dSsrinivas pandruvada &accel_state->common_attributes); 32745fe6f7dSsrinivas pandruvada if (ret < 0) { 32845fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "trigger setup failed\n"); 32945fe6f7dSsrinivas pandruvada goto error_unreg_buffer_funcs; 33045fe6f7dSsrinivas pandruvada } 33145fe6f7dSsrinivas pandruvada 33245fe6f7dSsrinivas pandruvada ret = iio_device_register(indio_dev); 33345fe6f7dSsrinivas pandruvada if (ret) { 33445fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "device register failed\n"); 33545fe6f7dSsrinivas pandruvada goto error_remove_trigger; 33645fe6f7dSsrinivas pandruvada } 33745fe6f7dSsrinivas pandruvada 33845fe6f7dSsrinivas pandruvada accel_state->callbacks.send_event = accel_3d_proc_event; 33945fe6f7dSsrinivas pandruvada accel_state->callbacks.capture_sample = accel_3d_capture_sample; 34045fe6f7dSsrinivas pandruvada accel_state->callbacks.pdev = pdev; 34145fe6f7dSsrinivas pandruvada ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_ACCEL_3D, 34245fe6f7dSsrinivas pandruvada &accel_state->callbacks); 34345fe6f7dSsrinivas pandruvada if (ret < 0) { 34445fe6f7dSsrinivas pandruvada dev_err(&pdev->dev, "callback reg failed\n"); 34545fe6f7dSsrinivas pandruvada goto error_iio_unreg; 34645fe6f7dSsrinivas pandruvada } 34745fe6f7dSsrinivas pandruvada 34845fe6f7dSsrinivas pandruvada return ret; 34945fe6f7dSsrinivas pandruvada 35045fe6f7dSsrinivas pandruvada error_iio_unreg: 35145fe6f7dSsrinivas pandruvada iio_device_unregister(indio_dev); 35245fe6f7dSsrinivas pandruvada error_remove_trigger: 35345fe6f7dSsrinivas pandruvada hid_sensor_remove_trigger(indio_dev); 35445fe6f7dSsrinivas pandruvada error_unreg_buffer_funcs: 35545fe6f7dSsrinivas pandruvada iio_triggered_buffer_cleanup(indio_dev); 35645fe6f7dSsrinivas pandruvada error_free_dev_mem: 35745fe6f7dSsrinivas pandruvada kfree(indio_dev->channels); 35845fe6f7dSsrinivas pandruvada return ret; 35945fe6f7dSsrinivas pandruvada } 36045fe6f7dSsrinivas pandruvada 36145fe6f7dSsrinivas pandruvada /* Function to deinitialize the processing for usage id */ 362fc52692cSGreg Kroah-Hartman static int hid_accel_3d_remove(struct platform_device *pdev) 36345fe6f7dSsrinivas pandruvada { 36445fe6f7dSsrinivas pandruvada struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 36545fe6f7dSsrinivas pandruvada struct iio_dev *indio_dev = platform_get_drvdata(pdev); 36645fe6f7dSsrinivas pandruvada 36745fe6f7dSsrinivas pandruvada sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_ACCEL_3D); 36845fe6f7dSsrinivas pandruvada iio_device_unregister(indio_dev); 36945fe6f7dSsrinivas pandruvada hid_sensor_remove_trigger(indio_dev); 37045fe6f7dSsrinivas pandruvada iio_triggered_buffer_cleanup(indio_dev); 37145fe6f7dSsrinivas pandruvada kfree(indio_dev->channels); 37245fe6f7dSsrinivas pandruvada 37345fe6f7dSsrinivas pandruvada return 0; 37445fe6f7dSsrinivas pandruvada } 37545fe6f7dSsrinivas pandruvada 37666c721f7SAlexander Holler static struct platform_device_id hid_accel_3d_ids[] = { 37766c721f7SAlexander Holler { 37866c721f7SAlexander Holler /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ 37966c721f7SAlexander Holler .name = "HID-SENSOR-200073", 38066c721f7SAlexander Holler }, 38166c721f7SAlexander Holler { /* sentinel */ } 38266c721f7SAlexander Holler }; 38366c721f7SAlexander Holler MODULE_DEVICE_TABLE(platform, hid_accel_3d_ids); 38466c721f7SAlexander Holler 38545fe6f7dSsrinivas pandruvada static struct platform_driver hid_accel_3d_platform_driver = { 38666c721f7SAlexander Holler .id_table = hid_accel_3d_ids, 38745fe6f7dSsrinivas pandruvada .driver = { 38866c721f7SAlexander Holler .name = KBUILD_MODNAME, 38945fe6f7dSsrinivas pandruvada .owner = THIS_MODULE, 39045fe6f7dSsrinivas pandruvada }, 39145fe6f7dSsrinivas pandruvada .probe = hid_accel_3d_probe, 39245fe6f7dSsrinivas pandruvada .remove = hid_accel_3d_remove, 39345fe6f7dSsrinivas pandruvada }; 39445fe6f7dSsrinivas pandruvada module_platform_driver(hid_accel_3d_platform_driver); 39545fe6f7dSsrinivas pandruvada 39645fe6f7dSsrinivas pandruvada MODULE_DESCRIPTION("HID Sensor Accel 3D"); 39745fe6f7dSsrinivas pandruvada MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); 39845fe6f7dSsrinivas pandruvada MODULE_LICENSE("GPL"); 399