| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * KXCJK-1013 3-axis accelerometer driver |
| * Copyright (c) 2014, Intel Corporation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/i2c.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/bitops.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/acpi.h> |
| #include <linux/pm.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/iio/iio.h> |
| #include <linux/iio/sysfs.h> |
| #include <linux/iio/buffer.h> |
| #include <linux/iio/trigger.h> |
| #include <linux/iio/events.h> |
| #include <linux/iio/trigger_consumer.h> |
| #include <linux/iio/triggered_buffer.h> |
| #include <linux/iio/accel/kxcjk_1013.h> |
| |
| #define KXCJK1013_DRV_NAME "kxcjk1013" |
| #define KXCJK1013_IRQ_NAME "kxcjk1013_event" |
| |
| #define KXTF9_REG_HP_XOUT_L 0x00 |
| #define KXTF9_REG_HP_XOUT_H 0x01 |
| #define KXTF9_REG_HP_YOUT_L 0x02 |
| #define KXTF9_REG_HP_YOUT_H 0x03 |
| #define KXTF9_REG_HP_ZOUT_L 0x04 |
| #define KXTF9_REG_HP_ZOUT_H 0x05 |
| |
| #define KXCJK1013_REG_XOUT_L 0x06 |
| /* |
| * From low byte X axis register, all the other addresses of Y and Z can be |
| * obtained by just applying axis offset. The following axis defines are just |
| * provide clarity, but not used. |
| */ |
| #define KXCJK1013_REG_XOUT_H 0x07 |
| #define KXCJK1013_REG_YOUT_L 0x08 |
| #define KXCJK1013_REG_YOUT_H 0x09 |
| #define KXCJK1013_REG_ZOUT_L 0x0A |
| #define KXCJK1013_REG_ZOUT_H 0x0B |
| |
| #define KXCJK1013_REG_DCST_RESP 0x0C |
| #define KXCJK1013_REG_WHO_AM_I 0x0F |
| #define KXTF9_REG_TILT_POS_CUR 0x10 |
| #define KXTF9_REG_TILT_POS_PREV 0x11 |
| #define KXTF9_REG_INT_SRC1 0x15 |
| #define KXCJK1013_REG_INT_SRC1 0x16 /* compatible, but called INT_SRC2 in KXTF9 ds */ |
| #define KXCJK1013_REG_INT_SRC2 0x17 |
| #define KXCJK1013_REG_STATUS_REG 0x18 |
| #define KXCJK1013_REG_INT_REL 0x1A |
| #define KXCJK1013_REG_CTRL1 0x1B |
| #define KXTF9_REG_CTRL2 0x1C |
| #define KXCJK1013_REG_CTRL2 0x1D /* mostly compatible, CTRL_REG3 in KTXF9 ds */ |
| #define KXCJK1013_REG_INT_CTRL1 0x1E |
| #define KXCJK1013_REG_INT_CTRL2 0x1F |
| #define KXTF9_REG_INT_CTRL3 0x20 |
| #define KXCJK1013_REG_DATA_CTRL 0x21 |
| #define KXTF9_REG_TILT_TIMER 0x28 |
| #define KXCJK1013_REG_WAKE_TIMER 0x29 |
| #define KXTF9_REG_TDT_TIMER 0x2B |
| #define KXTF9_REG_TDT_THRESH_H 0x2C |
| #define KXTF9_REG_TDT_THRESH_L 0x2D |
| #define KXTF9_REG_TDT_TAP_TIMER 0x2E |
| #define KXTF9_REG_TDT_TOTAL_TIMER 0x2F |
| #define KXTF9_REG_TDT_LATENCY_TIMER 0x30 |
| #define KXTF9_REG_TDT_WINDOW_TIMER 0x31 |
| #define KXCJK1013_REG_SELF_TEST 0x3A |
| #define KXTF9_REG_WAKE_THRESH 0x5A |
| #define KXTF9_REG_TILT_ANGLE 0x5C |
| #define KXTF9_REG_HYST_SET 0x5F |
| #define KXCJK1013_REG_WAKE_THRES 0x6A |
| |
| #define KXCJK1013_REG_CTRL1_BIT_PC1 BIT(7) |
| #define KXCJK1013_REG_CTRL1_BIT_RES BIT(6) |
| #define KXCJK1013_REG_CTRL1_BIT_DRDY BIT(5) |
| #define KXCJK1013_REG_CTRL1_BIT_GSEL1 BIT(4) |
| #define KXCJK1013_REG_CTRL1_BIT_GSEL0 BIT(3) |
| #define KXCJK1013_REG_CTRL1_BIT_WUFE BIT(1) |
| |
| #define KXCJK1013_REG_INT_CTRL1_BIT_IEU BIT(2) /* KXTF9 */ |
| #define KXCJK1013_REG_INT_CTRL1_BIT_IEL BIT(3) |
| #define KXCJK1013_REG_INT_CTRL1_BIT_IEA BIT(4) |
| #define KXCJK1013_REG_INT_CTRL1_BIT_IEN BIT(5) |
| |
| #define KXTF9_REG_TILT_BIT_LEFT_EDGE BIT(5) |
| #define KXTF9_REG_TILT_BIT_RIGHT_EDGE BIT(4) |
| #define KXTF9_REG_TILT_BIT_LOWER_EDGE BIT(3) |
| #define KXTF9_REG_TILT_BIT_UPPER_EDGE BIT(2) |
| #define KXTF9_REG_TILT_BIT_FACE_DOWN BIT(1) |
| #define KXTF9_REG_TILT_BIT_FACE_UP BIT(0) |
| |
| #define KXCJK1013_DATA_MASK_12_BIT 0x0FFF |
| #define KXCJK1013_MAX_STARTUP_TIME_US 100000 |
| |
| #define KXCJK1013_SLEEP_DELAY_MS 2000 |
| |
| #define KXCJK1013_REG_INT_SRC1_BIT_TPS BIT(0) /* KXTF9 */ |
| #define KXCJK1013_REG_INT_SRC1_BIT_WUFS BIT(1) |
| #define KXCJK1013_REG_INT_SRC1_MASK_TDTS (BIT(2) | BIT(3)) /* KXTF9 */ |
| #define KXCJK1013_REG_INT_SRC1_TAP_NONE 0 |
| #define KXCJK1013_REG_INT_SRC1_TAP_SINGLE BIT(2) |
| #define KXCJK1013_REG_INT_SRC1_TAP_DOUBLE BIT(3) |
| #define KXCJK1013_REG_INT_SRC1_BIT_DRDY BIT(4) |
| |
| /* KXCJK: INT_SOURCE2: motion detect, KXTF9: INT_SRC_REG1: tap detect */ |
| #define KXCJK1013_REG_INT_SRC2_BIT_ZP BIT(0) |
| #define KXCJK1013_REG_INT_SRC2_BIT_ZN BIT(1) |
| #define KXCJK1013_REG_INT_SRC2_BIT_YP BIT(2) |
| #define KXCJK1013_REG_INT_SRC2_BIT_YN BIT(3) |
| #define KXCJK1013_REG_INT_SRC2_BIT_XP BIT(4) |
| #define KXCJK1013_REG_INT_SRC2_BIT_XN BIT(5) |
| |
| #define KXCJK1013_DEFAULT_WAKE_THRES 1 |
| |
| enum kx_chipset { |
| KXCJK1013, |
| KXCJ91008, |
| KXTJ21009, |
| KXTF9, |
| KX_MAX_CHIPS /* this must be last */ |
| }; |
| |
| enum kx_acpi_type { |
| ACPI_GENERIC, |
| ACPI_SMO8500, |
| ACPI_KIOX010A, |
| }; |
| |
| struct kxcjk1013_data { |
| struct i2c_client *client; |
| struct iio_trigger *dready_trig; |
| struct iio_trigger *motion_trig; |
| struct iio_mount_matrix orientation; |
| struct mutex mutex; |
| s16 buffer[8]; |
| u8 odr_bits; |
| u8 range; |
| int wake_thres; |
| int wake_dur; |
| bool active_high_intr; |
| bool dready_trigger_on; |
| int ev_enable_state; |
| bool motion_trigger_on; |
| int64_t timestamp; |
| enum kx_chipset chipset; |
| enum kx_acpi_type acpi_type; |
| }; |
| |
| enum kxcjk1013_axis { |
| AXIS_X, |
| AXIS_Y, |
| AXIS_Z, |
| AXIS_MAX, |
| }; |
| |
| enum kxcjk1013_mode { |
| STANDBY, |
| OPERATION, |
| }; |
| |
| enum kxcjk1013_range { |
| KXCJK1013_RANGE_2G, |
| KXCJK1013_RANGE_4G, |
| KXCJK1013_RANGE_8G, |
| }; |
| |
| struct kx_odr_map { |
| int val; |
| int val2; |
| int odr_bits; |
| int wuf_bits; |
| }; |
| |
| static const struct kx_odr_map samp_freq_table[] = { |
| { 0, 781000, 0x08, 0x00 }, |
| { 1, 563000, 0x09, 0x01 }, |
| { 3, 125000, 0x0A, 0x02 }, |
| { 6, 250000, 0x0B, 0x03 }, |
| { 12, 500000, 0x00, 0x04 }, |
| { 25, 0, 0x01, 0x05 }, |
| { 50, 0, 0x02, 0x06 }, |
| { 100, 0, 0x03, 0x06 }, |
| { 200, 0, 0x04, 0x06 }, |
| { 400, 0, 0x05, 0x06 }, |
| { 800, 0, 0x06, 0x06 }, |
| { 1600, 0, 0x07, 0x06 }, |
| }; |
| |
| static const char *const kxcjk1013_samp_freq_avail = |
| "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600"; |
| |
| static const struct kx_odr_map kxtf9_samp_freq_table[] = { |
| { 25, 0, 0x01, 0x00 }, |
| { 50, 0, 0x02, 0x01 }, |
| { 100, 0, 0x03, 0x01 }, |
| { 200, 0, 0x04, 0x01 }, |
| { 400, 0, 0x05, 0x01 }, |
| { 800, 0, 0x06, 0x01 }, |
| }; |
| |
| static const char *const kxtf9_samp_freq_avail = |
| "25 50 100 200 400 800"; |
| |
| /* Refer to section 4 of the specification */ |
| static const struct { |
| int odr_bits; |
| int usec; |
| } odr_start_up_times[KX_MAX_CHIPS][12] = { |
| /* KXCJK-1013 */ |
| { |
| {0x08, 100000}, |
| {0x09, 100000}, |
| {0x0A, 100000}, |
| {0x0B, 100000}, |
| {0, 80000}, |
| {0x01, 41000}, |
| {0x02, 21000}, |
| {0x03, 11000}, |
| {0x04, 6400}, |
| {0x05, 3900}, |
| {0x06, 2700}, |
| {0x07, 2100}, |
| }, |
| /* KXCJ9-1008 */ |
| { |
| {0x08, 100000}, |
| {0x09, 100000}, |
| {0x0A, 100000}, |
| {0x0B, 100000}, |
| {0, 80000}, |
| {0x01, 41000}, |
| {0x02, 21000}, |
| {0x03, 11000}, |
| {0x04, 6400}, |
| {0x05, 3900}, |
| {0x06, 2700}, |
| {0x07, 2100}, |
| }, |
| /* KXCTJ2-1009 */ |
| { |
| {0x08, 1240000}, |
| {0x09, 621000}, |
| {0x0A, 309000}, |
| {0x0B, 151000}, |
| {0, 80000}, |
| {0x01, 41000}, |
| {0x02, 21000}, |
| {0x03, 11000}, |
| {0x04, 6000}, |
| {0x05, 4000}, |
| {0x06, 3000}, |
| {0x07, 2000}, |
| }, |
| /* KXTF9 */ |
| { |
| {0x01, 81000}, |
| {0x02, 41000}, |
| {0x03, 21000}, |
| {0x04, 11000}, |
| {0x05, 5100}, |
| {0x06, 2700}, |
| }, |
| }; |
| |
| static const struct { |
| u16 scale; |
| u8 gsel_0; |
| u8 gsel_1; |
| } KXCJK1013_scale_table[] = { {9582, 0, 0}, |
| {19163, 1, 0}, |
| {38326, 0, 1} }; |
| |
| #ifdef CONFIG_ACPI |
| enum kiox010a_fn_index { |
| KIOX010A_SET_LAPTOP_MODE = 1, |
| KIOX010A_SET_TABLET_MODE = 2, |
| }; |
| |
| static int kiox010a_dsm(struct device *dev, int fn_index) |
| { |
| acpi_handle handle = ACPI_HANDLE(dev); |
| guid_t kiox010a_dsm_guid; |
| union acpi_object *obj; |
| |
| if (!handle) |
| return -ENODEV; |
| |
| guid_parse("1f339696-d475-4e26-8cad-2e9f8e6d7a91", &kiox010a_dsm_guid); |
| |
| obj = acpi_evaluate_dsm(handle, &kiox010a_dsm_guid, 1, fn_index, NULL); |
| if (!obj) |
| return -EIO; |
| |
| ACPI_FREE(obj); |
| return 0; |
| } |
| #endif |
| |
| static int kxcjk1013_set_mode(struct kxcjk1013_data *data, |
| enum kxcjk1013_mode mode) |
| { |
| int ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
| return ret; |
| } |
| |
| if (mode == STANDBY) |
| ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1; |
| else |
| ret |= KXCJK1013_REG_CTRL1_BIT_PC1; |
| |
| ret = i2c_smbus_write_byte_data(data->client, |
| KXCJK1013_REG_CTRL1, ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_get_mode(struct kxcjk1013_data *data, |
| enum kxcjk1013_mode *mode) |
| { |
| int ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
| return ret; |
| } |
| |
| if (ret & KXCJK1013_REG_CTRL1_BIT_PC1) |
| *mode = OPERATION; |
| else |
| *mode = STANDBY; |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index) |
| { |
| int ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
| return ret; |
| } |
| |
| ret &= ~(KXCJK1013_REG_CTRL1_BIT_GSEL0 | |
| KXCJK1013_REG_CTRL1_BIT_GSEL1); |
| ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3); |
| ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4); |
| |
| ret = i2c_smbus_write_byte_data(data->client, |
| KXCJK1013_REG_CTRL1, |
| ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); |
| return ret; |
| } |
| |
| data->range = range_index; |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_chip_init(struct kxcjk1013_data *data) |
| { |
| int ret; |
| |
| #ifdef CONFIG_ACPI |
| if (data->acpi_type == ACPI_KIOX010A) { |
| /* Make sure the kbd and touchpad on 2-in-1s using 2 KXCJ91008-s work */ |
| kiox010a_dsm(&data->client->dev, KIOX010A_SET_LAPTOP_MODE); |
| } |
| #endif |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading who_am_i\n"); |
| return ret; |
| } |
| |
| dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret); |
| |
| ret = kxcjk1013_set_mode(data, STANDBY); |
| if (ret < 0) |
| return ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
| return ret; |
| } |
| |
| /* Set 12 bit mode */ |
| ret |= KXCJK1013_REG_CTRL1_BIT_RES; |
| |
| ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1, |
| ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_ctrl\n"); |
| return ret; |
| } |
| |
| /* Setting range to 4G */ |
| ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G); |
| if (ret < 0) |
| return ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_data_ctrl\n"); |
| return ret; |
| } |
| |
| data->odr_bits = ret; |
| |
| /* Set up INT polarity */ |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); |
| return ret; |
| } |
| |
| if (data->active_high_intr) |
| ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEA; |
| else |
| ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEA; |
| |
| ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1, |
| ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); |
| return ret; |
| } |
| |
| ret = kxcjk1013_set_mode(data, OPERATION); |
| if (ret < 0) |
| return ret; |
| |
| data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES; |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data) |
| { |
| int i; |
| int idx = data->chipset; |
| |
| for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) { |
| if (odr_start_up_times[idx][i].odr_bits == data->odr_bits) |
| return odr_start_up_times[idx][i].usec; |
| } |
| |
| return KXCJK1013_MAX_STARTUP_TIME_US; |
| } |
| #endif |
| |
| static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on) |
| { |
| #ifdef CONFIG_PM |
| int ret; |
| |
| if (on) |
| ret = pm_runtime_get_sync(&data->client->dev); |
| else { |
| pm_runtime_mark_last_busy(&data->client->dev); |
| ret = pm_runtime_put_autosuspend(&data->client->dev); |
| } |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "Failed: %s for %d\n", __func__, on); |
| if (on) |
| pm_runtime_put_noidle(&data->client->dev); |
| return ret; |
| } |
| #endif |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data) |
| { |
| int waketh_reg, ret; |
| |
| ret = i2c_smbus_write_byte_data(data->client, |
| KXCJK1013_REG_WAKE_TIMER, |
| data->wake_dur); |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "Error writing reg_wake_timer\n"); |
| return ret; |
| } |
| |
| waketh_reg = data->chipset == KXTF9 ? |
| KXTF9_REG_WAKE_THRESH : KXCJK1013_REG_WAKE_THRES; |
| ret = i2c_smbus_write_byte_data(data->client, waketh_reg, |
| data->wake_thres); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_wake_thres\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data, |
| bool status) |
| { |
| int ret; |
| enum kxcjk1013_mode store_mode; |
| |
| ret = kxcjk1013_get_mode(data, &store_mode); |
| if (ret < 0) |
| return ret; |
| |
| /* This is requirement by spec to change state to STANDBY */ |
| ret = kxcjk1013_set_mode(data, STANDBY); |
| if (ret < 0) |
| return ret; |
| |
| ret = kxcjk1013_chip_update_thresholds(data); |
| if (ret < 0) |
| return ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); |
| return ret; |
| } |
| |
| if (status) |
| ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
| else |
| ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
| |
| ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1, |
| ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); |
| return ret; |
| } |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
| return ret; |
| } |
| |
| if (status) |
| ret |= KXCJK1013_REG_CTRL1_BIT_WUFE; |
| else |
| ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE; |
| |
| ret = i2c_smbus_write_byte_data(data->client, |
| KXCJK1013_REG_CTRL1, ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); |
| return ret; |
| } |
| |
| if (store_mode == OPERATION) { |
| ret = kxcjk1013_set_mode(data, OPERATION); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data, |
| bool status) |
| { |
| int ret; |
| enum kxcjk1013_mode store_mode; |
| |
| ret = kxcjk1013_get_mode(data, &store_mode); |
| if (ret < 0) |
| return ret; |
| |
| /* This is requirement by spec to change state to STANDBY */ |
| ret = kxcjk1013_set_mode(data, STANDBY); |
| if (ret < 0) |
| return ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); |
| return ret; |
| } |
| |
| if (status) |
| ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
| else |
| ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
| |
| ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1, |
| ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); |
| return ret; |
| } |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
| return ret; |
| } |
| |
| if (status) |
| ret |= KXCJK1013_REG_CTRL1_BIT_DRDY; |
| else |
| ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY; |
| |
| ret = i2c_smbus_write_byte_data(data->client, |
| KXCJK1013_REG_CTRL1, ret); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); |
| return ret; |
| } |
| |
| if (store_mode == OPERATION) { |
| ret = kxcjk1013_set_mode(data, OPERATION); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static const struct kx_odr_map *kxcjk1013_find_odr_value( |
| const struct kx_odr_map *map, size_t map_size, int val, int val2) |
| { |
| int i; |
| |
| for (i = 0; i < map_size; ++i) { |
| if (map[i].val == val && map[i].val2 == val2) |
| return &map[i]; |
| } |
| |
| return ERR_PTR(-EINVAL); |
| } |
| |
| static int kxcjk1013_convert_odr_value(const struct kx_odr_map *map, |
| size_t map_size, int odr_bits, |
| int *val, int *val2) |
| { |
| int i; |
| |
| for (i = 0; i < map_size; ++i) { |
| if (map[i].odr_bits == odr_bits) { |
| *val = map[i].val; |
| *val2 = map[i].val2; |
| return IIO_VAL_INT_PLUS_MICRO; |
| } |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2) |
| { |
| int ret; |
| enum kxcjk1013_mode store_mode; |
| const struct kx_odr_map *odr_setting; |
| |
| ret = kxcjk1013_get_mode(data, &store_mode); |
| if (ret < 0) |
| return ret; |
| |
| if (data->chipset == KXTF9) |
| odr_setting = kxcjk1013_find_odr_value(kxtf9_samp_freq_table, |
| ARRAY_SIZE(kxtf9_samp_freq_table), |
| val, val2); |
| else |
| odr_setting = kxcjk1013_find_odr_value(samp_freq_table, |
| ARRAY_SIZE(samp_freq_table), |
| val, val2); |
| |
| if (IS_ERR(odr_setting)) |
| return PTR_ERR(odr_setting); |
| |
| /* To change ODR, the chip must be set to STANDBY as per spec */ |
| ret = kxcjk1013_set_mode(data, STANDBY); |
| if (ret < 0) |
| return ret; |
| |
| ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_DATA_CTRL, |
| odr_setting->odr_bits); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing data_ctrl\n"); |
| return ret; |
| } |
| |
| data->odr_bits = odr_setting->odr_bits; |
| |
| ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL2, |
| odr_setting->wuf_bits); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error writing reg_ctrl2\n"); |
| return ret; |
| } |
| |
| if (store_mode == OPERATION) { |
| ret = kxcjk1013_set_mode(data, OPERATION); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2) |
| { |
| if (data->chipset == KXTF9) |
| return kxcjk1013_convert_odr_value(kxtf9_samp_freq_table, |
| ARRAY_SIZE(kxtf9_samp_freq_table), |
| data->odr_bits, val, val2); |
| else |
| return kxcjk1013_convert_odr_value(samp_freq_table, |
| ARRAY_SIZE(samp_freq_table), |
| data->odr_bits, val, val2); |
| } |
| |
| static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis) |
| { |
| u8 reg = KXCJK1013_REG_XOUT_L + axis * 2; |
| int ret; |
| |
| ret = i2c_smbus_read_word_data(data->client, reg); |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "failed to read accel_%c registers\n", 'x' + axis); |
| return ret; |
| } |
| |
| return ret; |
| } |
| |
| static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val) |
| { |
| int ret, i; |
| enum kxcjk1013_mode store_mode; |
| |
| for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) { |
| if (KXCJK1013_scale_table[i].scale == val) { |
| ret = kxcjk1013_get_mode(data, &store_mode); |
| if (ret < 0) |
| return ret; |
| |
| ret = kxcjk1013_set_mode(data, STANDBY); |
| if (ret < 0) |
| return ret; |
| |
| ret = kxcjk1013_set_range(data, i); |
| if (ret < 0) |
| return ret; |
| |
| if (store_mode == OPERATION) { |
| ret = kxcjk1013_set_mode(data, OPERATION); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int kxcjk1013_read_raw(struct iio_dev *indio_dev, |
| struct iio_chan_spec const *chan, int *val, |
| int *val2, long mask) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| switch (mask) { |
| case IIO_CHAN_INFO_RAW: |
| mutex_lock(&data->mutex); |
| if (iio_buffer_enabled(indio_dev)) |
| ret = -EBUSY; |
| else { |
| ret = kxcjk1013_set_power_state(data, true); |
| if (ret < 0) { |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| ret = kxcjk1013_get_acc_reg(data, chan->scan_index); |
| if (ret < 0) { |
| kxcjk1013_set_power_state(data, false); |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| *val = sign_extend32(ret >> 4, 11); |
| ret = kxcjk1013_set_power_state(data, false); |
| } |
| mutex_unlock(&data->mutex); |
| |
| if (ret < 0) |
| return ret; |
| |
| return IIO_VAL_INT; |
| |
| case IIO_CHAN_INFO_SCALE: |
| *val = 0; |
| *val2 = KXCJK1013_scale_table[data->range].scale; |
| return IIO_VAL_INT_PLUS_MICRO; |
| |
| case IIO_CHAN_INFO_SAMP_FREQ: |
| mutex_lock(&data->mutex); |
| ret = kxcjk1013_get_odr(data, val, val2); |
| mutex_unlock(&data->mutex); |
| return ret; |
| |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int kxcjk1013_write_raw(struct iio_dev *indio_dev, |
| struct iio_chan_spec const *chan, int val, |
| int val2, long mask) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| switch (mask) { |
| case IIO_CHAN_INFO_SAMP_FREQ: |
| mutex_lock(&data->mutex); |
| ret = kxcjk1013_set_odr(data, val, val2); |
| mutex_unlock(&data->mutex); |
| break; |
| case IIO_CHAN_INFO_SCALE: |
| if (val) |
| return -EINVAL; |
| |
| mutex_lock(&data->mutex); |
| ret = kxcjk1013_set_scale(data, val2); |
| mutex_unlock(&data->mutex); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int kxcjk1013_read_event(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir, |
| enum iio_event_info info, |
| int *val, int *val2) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| *val2 = 0; |
| switch (info) { |
| case IIO_EV_INFO_VALUE: |
| *val = data->wake_thres; |
| break; |
| case IIO_EV_INFO_PERIOD: |
| *val = data->wake_dur; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return IIO_VAL_INT; |
| } |
| |
| static int kxcjk1013_write_event(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir, |
| enum iio_event_info info, |
| int val, int val2) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| if (data->ev_enable_state) |
| return -EBUSY; |
| |
| switch (info) { |
| case IIO_EV_INFO_VALUE: |
| data->wake_thres = val; |
| break; |
| case IIO_EV_INFO_PERIOD: |
| data->wake_dur = val; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_read_event_config(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| return data->ev_enable_state; |
| } |
| |
| static int kxcjk1013_write_event_config(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir, |
| int state) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| if (state && data->ev_enable_state) |
| return 0; |
| |
| mutex_lock(&data->mutex); |
| |
| if (!state && data->motion_trigger_on) { |
| data->ev_enable_state = 0; |
| mutex_unlock(&data->mutex); |
| return 0; |
| } |
| |
| /* |
| * We will expect the enable and disable to do operation in |
| * in reverse order. This will happen here anyway as our |
| * resume operation uses sync mode runtime pm calls, the |
| * suspend operation will be delayed by autosuspend delay |
| * So the disable operation will still happen in reverse of |
| * enable operation. When runtime pm is disabled the mode |
| * is always on so sequence doesn't matter |
| */ |
| ret = kxcjk1013_set_power_state(data, state); |
| if (ret < 0) { |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| |
| ret = kxcjk1013_setup_any_motion_interrupt(data, state); |
| if (ret < 0) { |
| kxcjk1013_set_power_state(data, false); |
| data->ev_enable_state = 0; |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| |
| data->ev_enable_state = state; |
| mutex_unlock(&data->mutex); |
| |
| return 0; |
| } |
| |
| static int kxcjk1013_buffer_preenable(struct iio_dev *indio_dev) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| return kxcjk1013_set_power_state(data, true); |
| } |
| |
| static int kxcjk1013_buffer_postdisable(struct iio_dev *indio_dev) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| return kxcjk1013_set_power_state(data, false); |
| } |
| |
| static ssize_t kxcjk1013_get_samp_freq_avail(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| const char *str; |
| |
| if (data->chipset == KXTF9) |
| str = kxtf9_samp_freq_avail; |
| else |
| str = kxcjk1013_samp_freq_avail; |
| |
| return sprintf(buf, "%s\n", str); |
| } |
| |
| static IIO_DEVICE_ATTR(in_accel_sampling_frequency_available, S_IRUGO, |
| kxcjk1013_get_samp_freq_avail, NULL, 0); |
| |
| static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326"); |
| |
| static struct attribute *kxcjk1013_attributes[] = { |
| &iio_dev_attr_in_accel_sampling_frequency_available.dev_attr.attr, |
| &iio_const_attr_in_accel_scale_available.dev_attr.attr, |
| NULL, |
| }; |
| |
| static const struct attribute_group kxcjk1013_attrs_group = { |
| .attrs = kxcjk1013_attributes, |
| }; |
| |
| static const struct iio_event_spec kxcjk1013_event = { |
| .type = IIO_EV_TYPE_THRESH, |
| .dir = IIO_EV_DIR_EITHER, |
| .mask_separate = BIT(IIO_EV_INFO_VALUE) | |
| BIT(IIO_EV_INFO_ENABLE) | |
| BIT(IIO_EV_INFO_PERIOD) |
| }; |
| |
| static const struct iio_mount_matrix * |
| kxcjk1013_get_mount_matrix(const struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| return &data->orientation; |
| } |
| |
| static const struct iio_chan_spec_ext_info kxcjk1013_ext_info[] = { |
| IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, kxcjk1013_get_mount_matrix), |
| { } |
| }; |
| |
| #define KXCJK1013_CHANNEL(_axis) { \ |
| .type = IIO_ACCEL, \ |
| .modified = 1, \ |
| .channel2 = IIO_MOD_##_axis, \ |
| .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ |
| .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ |
| BIT(IIO_CHAN_INFO_SAMP_FREQ), \ |
| .scan_index = AXIS_##_axis, \ |
| .scan_type = { \ |
| .sign = 's', \ |
| .realbits = 12, \ |
| .storagebits = 16, \ |
| .shift = 4, \ |
| .endianness = IIO_LE, \ |
| }, \ |
| .event_spec = &kxcjk1013_event, \ |
| .ext_info = kxcjk1013_ext_info, \ |
| .num_event_specs = 1 \ |
| } |
| |
| static const struct iio_chan_spec kxcjk1013_channels[] = { |
| KXCJK1013_CHANNEL(X), |
| KXCJK1013_CHANNEL(Y), |
| KXCJK1013_CHANNEL(Z), |
| IIO_CHAN_SOFT_TIMESTAMP(3), |
| }; |
| |
| static const struct iio_buffer_setup_ops kxcjk1013_buffer_setup_ops = { |
| .preenable = kxcjk1013_buffer_preenable, |
| .postdisable = kxcjk1013_buffer_postdisable, |
| }; |
| |
| static const struct iio_info kxcjk1013_info = { |
| .attrs = &kxcjk1013_attrs_group, |
| .read_raw = kxcjk1013_read_raw, |
| .write_raw = kxcjk1013_write_raw, |
| .read_event_value = kxcjk1013_read_event, |
| .write_event_value = kxcjk1013_write_event, |
| .write_event_config = kxcjk1013_write_event_config, |
| .read_event_config = kxcjk1013_read_event_config, |
| }; |
| |
| static const unsigned long kxcjk1013_scan_masks[] = {0x7, 0}; |
| |
| static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p) |
| { |
| struct iio_poll_func *pf = p; |
| struct iio_dev *indio_dev = pf->indio_dev; |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| ret = i2c_smbus_read_i2c_block_data_or_emulated(data->client, |
| KXCJK1013_REG_XOUT_L, |
| AXIS_MAX * 2, |
| (u8 *)data->buffer); |
| mutex_unlock(&data->mutex); |
| if (ret < 0) |
| goto err; |
| |
| iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, |
| data->timestamp); |
| err: |
| iio_trigger_notify_done(indio_dev->trig); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void kxcjk1013_trig_reen(struct iio_trigger *trig) |
| { |
| struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL); |
| if (ret < 0) |
| dev_err(&data->client->dev, "Error reading reg_int_rel\n"); |
| } |
| |
| static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig, |
| bool state) |
| { |
| struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| |
| if (!state && data->ev_enable_state && data->motion_trigger_on) { |
| data->motion_trigger_on = false; |
| mutex_unlock(&data->mutex); |
| return 0; |
| } |
| |
| ret = kxcjk1013_set_power_state(data, state); |
| if (ret < 0) { |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| if (data->motion_trig == trig) |
| ret = kxcjk1013_setup_any_motion_interrupt(data, state); |
| else |
| ret = kxcjk1013_setup_new_data_interrupt(data, state); |
| if (ret < 0) { |
| kxcjk1013_set_power_state(data, false); |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| if (data->motion_trig == trig) |
| data->motion_trigger_on = state; |
| else |
| data->dready_trigger_on = state; |
| |
| mutex_unlock(&data->mutex); |
| |
| return 0; |
| } |
| |
| static const struct iio_trigger_ops kxcjk1013_trigger_ops = { |
| .set_trigger_state = kxcjk1013_data_rdy_trigger_set_state, |
| .reenable = kxcjk1013_trig_reen, |
| }; |
| |
| static void kxcjk1013_report_motion_event(struct iio_dev *indio_dev) |
| { |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| int ret = i2c_smbus_read_byte_data(data->client, |
| KXCJK1013_REG_INT_SRC2); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_int_src2\n"); |
| return; |
| } |
| |
| if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN) |
| iio_push_event(indio_dev, |
| IIO_MOD_EVENT_CODE(IIO_ACCEL, |
| 0, |
| IIO_MOD_X, |
| IIO_EV_TYPE_THRESH, |
| IIO_EV_DIR_FALLING), |
| data->timestamp); |
| |
| if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP) |
| iio_push_event(indio_dev, |
| IIO_MOD_EVENT_CODE(IIO_ACCEL, |
| 0, |
| IIO_MOD_X, |
| IIO_EV_TYPE_THRESH, |
| IIO_EV_DIR_RISING), |
| data->timestamp); |
| |
| if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN) |
| iio_push_event(indio_dev, |
| IIO_MOD_EVENT_CODE(IIO_ACCEL, |
| 0, |
| IIO_MOD_Y, |
| IIO_EV_TYPE_THRESH, |
| IIO_EV_DIR_FALLING), |
| data->timestamp); |
| |
| if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP) |
| iio_push_event(indio_dev, |
| IIO_MOD_EVENT_CODE(IIO_ACCEL, |
| 0, |
| IIO_MOD_Y, |
| IIO_EV_TYPE_THRESH, |
| IIO_EV_DIR_RISING), |
| data->timestamp); |
| |
| if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN) |
| iio_push_event(indio_dev, |
| IIO_MOD_EVENT_CODE(IIO_ACCEL, |
| 0, |
| IIO_MOD_Z, |
| IIO_EV_TYPE_THRESH, |
| IIO_EV_DIR_FALLING), |
| data->timestamp); |
| |
| if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP) |
| iio_push_event(indio_dev, |
| IIO_MOD_EVENT_CODE(IIO_ACCEL, |
| 0, |
| IIO_MOD_Z, |
| IIO_EV_TYPE_THRESH, |
| IIO_EV_DIR_RISING), |
| data->timestamp); |
| } |
| |
| static irqreturn_t kxcjk1013_event_handler(int irq, void *private) |
| { |
| struct iio_dev *indio_dev = private; |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_SRC1); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "Error reading reg_int_src1\n"); |
| goto ack_intr; |
| } |
| |
| if (ret & KXCJK1013_REG_INT_SRC1_BIT_WUFS) { |
| if (data->chipset == KXTF9) |
| iio_push_event(indio_dev, |
| IIO_MOD_EVENT_CODE(IIO_ACCEL, |
| 0, |
| IIO_MOD_X_AND_Y_AND_Z, |
| IIO_EV_TYPE_THRESH, |
| IIO_EV_DIR_RISING), |
| data->timestamp); |
| else |
| kxcjk1013_report_motion_event(indio_dev); |
| } |
| |
| ack_intr: |
| if (data->dready_trigger_on) |
| return IRQ_HANDLED; |
| |
| ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL); |
| if (ret < 0) |
| dev_err(&data->client->dev, "Error reading reg_int_rel\n"); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private) |
| { |
| struct iio_dev *indio_dev = private; |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| data->timestamp = iio_get_time_ns(indio_dev); |
| |
| if (data->dready_trigger_on) |
| iio_trigger_poll(data->dready_trig); |
| else if (data->motion_trigger_on) |
| iio_trigger_poll(data->motion_trig); |
| |
| if (data->ev_enable_state) |
| return IRQ_WAKE_THREAD; |
| else |
| return IRQ_HANDLED; |
| } |
| |
| static const char *kxcjk1013_match_acpi_device(struct device *dev, |
| enum kx_chipset *chipset, |
| enum kx_acpi_type *acpi_type) |
| { |
| const struct acpi_device_id *id; |
| |
| id = acpi_match_device(dev->driver->acpi_match_table, dev); |
| if (!id) |
| return NULL; |
| |
| if (strcmp(id->id, "SMO8500") == 0) |
| *acpi_type = ACPI_SMO8500; |
| else if (strcmp(id->id, "KIOX010A") == 0) |
| *acpi_type = ACPI_KIOX010A; |
| |
| *chipset = (enum kx_chipset)id->driver_data; |
| |
| return dev_name(dev); |
| } |
| |
| static int kxcjk1013_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct kxcjk1013_data *data; |
| struct iio_dev *indio_dev; |
| struct kxcjk_1013_platform_data *pdata; |
| const char *name; |
| int ret; |
| |
| indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); |
| if (!indio_dev) |
| return -ENOMEM; |
| |
| data = iio_priv(indio_dev); |
| i2c_set_clientdata(client, indio_dev); |
| data->client = client; |
| |
| pdata = dev_get_platdata(&client->dev); |
| if (pdata) { |
| data->active_high_intr = pdata->active_high_intr; |
| data->orientation = pdata->orientation; |
| } else { |
| data->active_high_intr = true; /* default polarity */ |
| |
| ret = iio_read_mount_matrix(&client->dev, "mount-matrix", |
| &data->orientation); |
| if (ret) |
| return ret; |
| } |
| |
| if (id) { |
| data->chipset = (enum kx_chipset)(id->driver_data); |
| name = id->name; |
| } else if (ACPI_HANDLE(&client->dev)) { |
| name = kxcjk1013_match_acpi_device(&client->dev, |
| &data->chipset, |
| &data->acpi_type); |
| } else |
| return -ENODEV; |
| |
| ret = kxcjk1013_chip_init(data); |
| if (ret < 0) |
| return ret; |
| |
| mutex_init(&data->mutex); |
| |
| indio_dev->channels = kxcjk1013_channels; |
| indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels); |
| indio_dev->available_scan_masks = kxcjk1013_scan_masks; |
| indio_dev->name = name; |
| indio_dev->modes = INDIO_DIRECT_MODE; |
| indio_dev->info = &kxcjk1013_info; |
| |
| if (client->irq > 0 && data->acpi_type != ACPI_SMO8500) { |
| ret = devm_request_threaded_irq(&client->dev, client->irq, |
| kxcjk1013_data_rdy_trig_poll, |
| kxcjk1013_event_handler, |
| IRQF_TRIGGER_RISING, |
| KXCJK1013_IRQ_NAME, |
| indio_dev); |
| if (ret) |
| goto err_poweroff; |
| |
| data->dready_trig = devm_iio_trigger_alloc(&client->dev, |
| "%s-dev%d", |
| indio_dev->name, |
| indio_dev->id); |
| if (!data->dready_trig) { |
| ret = -ENOMEM; |
| goto err_poweroff; |
| } |
| |
| data->motion_trig = devm_iio_trigger_alloc(&client->dev, |
| "%s-any-motion-dev%d", |
| indio_dev->name, |
| indio_dev->id); |
| if (!data->motion_trig) { |
| ret = -ENOMEM; |
| goto err_poweroff; |
| } |
| |
| data->dready_trig->dev.parent = &client->dev; |
| data->dready_trig->ops = &kxcjk1013_trigger_ops; |
| iio_trigger_set_drvdata(data->dready_trig, indio_dev); |
| indio_dev->trig = data->dready_trig; |
| iio_trigger_get(indio_dev->trig); |
| ret = iio_trigger_register(data->dready_trig); |
| if (ret) |
| goto err_poweroff; |
| |
| data->motion_trig->dev.parent = &client->dev; |
| data->motion_trig->ops = &kxcjk1013_trigger_ops; |
| iio_trigger_set_drvdata(data->motion_trig, indio_dev); |
| ret = iio_trigger_register(data->motion_trig); |
| if (ret) { |
| data->motion_trig = NULL; |
| goto err_trigger_unregister; |
| } |
| } |
| |
| ret = iio_triggered_buffer_setup(indio_dev, |
| &iio_pollfunc_store_time, |
| kxcjk1013_trigger_handler, |
| &kxcjk1013_buffer_setup_ops); |
| if (ret < 0) { |
| dev_err(&client->dev, "iio triggered buffer setup failed\n"); |
| goto err_trigger_unregister; |
| } |
| |
| ret = pm_runtime_set_active(&client->dev); |
| if (ret) |
| goto err_buffer_cleanup; |
| |
| pm_runtime_enable(&client->dev); |
| pm_runtime_set_autosuspend_delay(&client->dev, |
| KXCJK1013_SLEEP_DELAY_MS); |
| pm_runtime_use_autosuspend(&client->dev); |
| |
| ret = iio_device_register(indio_dev); |
| if (ret < 0) { |
| dev_err(&client->dev, "unable to register iio device\n"); |
| goto err_buffer_cleanup; |
| } |
| |
| return 0; |
| |
| err_buffer_cleanup: |
| if (data->dready_trig) |
| iio_triggered_buffer_cleanup(indio_dev); |
| err_trigger_unregister: |
| if (data->dready_trig) |
| iio_trigger_unregister(data->dready_trig); |
| if (data->motion_trig) |
| iio_trigger_unregister(data->motion_trig); |
| err_poweroff: |
| kxcjk1013_set_mode(data, STANDBY); |
| |
| return ret; |
| } |
| |
| static int kxcjk1013_remove(struct i2c_client *client) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(client); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| |
| iio_device_unregister(indio_dev); |
| |
| pm_runtime_disable(&client->dev); |
| pm_runtime_set_suspended(&client->dev); |
| pm_runtime_put_noidle(&client->dev); |
| |
| if (data->dready_trig) { |
| iio_triggered_buffer_cleanup(indio_dev); |
| iio_trigger_unregister(data->dready_trig); |
| iio_trigger_unregister(data->motion_trig); |
| } |
| |
| mutex_lock(&data->mutex); |
| kxcjk1013_set_mode(data, STANDBY); |
| mutex_unlock(&data->mutex); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int kxcjk1013_suspend(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| ret = kxcjk1013_set_mode(data, STANDBY); |
| mutex_unlock(&data->mutex); |
| |
| return ret; |
| } |
| |
| static int kxcjk1013_resume(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret = 0; |
| |
| mutex_lock(&data->mutex); |
| ret = kxcjk1013_set_mode(data, OPERATION); |
| if (ret == 0) |
| ret = kxcjk1013_set_range(data, data->range); |
| mutex_unlock(&data->mutex); |
| |
| return ret; |
| } |
| #endif |
| |
| #ifdef CONFIG_PM |
| static int kxcjk1013_runtime_suspend(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| ret = kxcjk1013_set_mode(data, STANDBY); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "powering off device failed\n"); |
| return -EAGAIN; |
| } |
| return 0; |
| } |
| |
| static int kxcjk1013_runtime_resume(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct kxcjk1013_data *data = iio_priv(indio_dev); |
| int ret; |
| int sleep_val; |
| |
| ret = kxcjk1013_set_mode(data, OPERATION); |
| if (ret < 0) |
| return ret; |
| |
| sleep_val = kxcjk1013_get_startup_times(data); |
| if (sleep_val < 20000) |
| usleep_range(sleep_val, 20000); |
| else |
| msleep_interruptible(sleep_val/1000); |
| |
| return 0; |
| } |
| #endif |
| |
| static const struct dev_pm_ops kxcjk1013_pm_ops = { |
| SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume) |
| SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend, |
| kxcjk1013_runtime_resume, NULL) |
| }; |
| |
| static const struct acpi_device_id kx_acpi_match[] = { |
| {"KXCJ1013", KXCJK1013}, |
| {"KXCJ1008", KXCJ91008}, |
| {"KXCJ9000", KXCJ91008}, |
| {"KIOX0008", KXCJ91008}, |
| {"KIOX0009", KXTJ21009}, |
| {"KIOX000A", KXCJ91008}, |
| {"KIOX010A", KXCJ91008}, /* KXCJ91008 in the display of a yoga 2-in-1 */ |
| {"KIOX020A", KXCJ91008}, /* KXCJ91008 in the base of a yoga 2-in-1 */ |
| {"KXTJ1009", KXTJ21009}, |
| {"KXJ2109", KXTJ21009}, |
| {"SMO8500", KXCJ91008}, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(acpi, kx_acpi_match); |
| |
| static const struct i2c_device_id kxcjk1013_id[] = { |
| {"kxcjk1013", KXCJK1013}, |
| {"kxcj91008", KXCJ91008}, |
| {"kxtj21009", KXTJ21009}, |
| {"kxtf9", KXTF9}, |
| {"SMO8500", KXCJ91008}, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(i2c, kxcjk1013_id); |
| |
| static const struct of_device_id kxcjk1013_of_match[] = { |
| { .compatible = "kionix,kxcjk1013", }, |
| { .compatible = "kionix,kxcj91008", }, |
| { .compatible = "kionix,kxtj21009", }, |
| { .compatible = "kionix,kxtf9", }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, kxcjk1013_of_match); |
| |
| static struct i2c_driver kxcjk1013_driver = { |
| .driver = { |
| .name = KXCJK1013_DRV_NAME, |
| .acpi_match_table = ACPI_PTR(kx_acpi_match), |
| .of_match_table = kxcjk1013_of_match, |
| .pm = &kxcjk1013_pm_ops, |
| }, |
| .probe = kxcjk1013_probe, |
| .remove = kxcjk1013_remove, |
| .id_table = kxcjk1013_id, |
| }; |
| module_i2c_driver(kxcjk1013_driver); |
| |
| MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("KXCJK1013 accelerometer driver"); |