>From 9985dc1211ae33baa877489c26920dfd1c29bb35 Mon Sep 17 00:00:00 2001 From: Hemanth V <hemanthv@xxxxxx> Date: Thu, 26 Aug 2010 17:44:48 +0530 Subject: [PATCH] input: CMA3000 Accelerometer Driver Add support for CMA3000 Tri-axis accelerometer, which supports Motion detect, Measurement and Free fall modes. CMA3000 supports both I2C/SPI bus for communication, currently the driver supports I2C based communication. Driver reports acceleration data through input subsystem Signed-off-by: Hemanth V <hemanthv@xxxxxx> Reviewed-by: Jonathan Cameron <jic23@xxxxxxxxx> Reviewed-by: Sergio Aguirre <saaguirre@xxxxxx> Reviewed-by: Shubhrajyoti <Shubhrajyoti@xxxxxx> --- This is V4 of patch, which currently doesnot support a sysfs interface. Discussions are ongoing to create a standard sysfs interface for sensors under input subsystem. This interface would be adopted by the driver subsequently. Documentation/input/cma3000_d0x.txt | 115 ++++++++++++ drivers/input/misc/Kconfig | 24 +++ drivers/input/misc/Makefile | 2 + drivers/input/misc/cma3000_d0x.c | 334 ++++++++++++++++++++++++++++++++++ drivers/input/misc/cma3000_d0x.h | 53 ++++++ drivers/input/misc/cma3000_d0x_i2c.c | 142 ++++++++++++++ include/linux/input/cma3000.h | 60 ++++++ 7 files changed, 730 insertions(+), 0 deletions(-) create mode 100644 Documentation/input/cma3000_d0x.txt create mode 100644 drivers/input/misc/cma3000_d0x.c create mode 100644 drivers/input/misc/cma3000_d0x.h create mode 100644 drivers/input/misc/cma3000_d0x_i2c.c create mode 100644 include/linux/input/cma3000.h diff --git a/Documentation/input/cma3000_d0x.txt b/Documentation/input/cma3000_d0x.txt new file mode 100644 index 0000000..9cc46af --- /dev/null +++ b/Documentation/input/cma3000_d0x.txt @@ -0,0 +1,115 @@ +Kernel driver for CMA3000-D0x +============================ + +Supported chips: +* VTI CMA3000-D0x +Datasheet: + CMA3000-D0X Product Family Specification 8281000A.02.pdf + <http://www.vti.fi/en/> + +Author: Hemanth V <hemanthv@xxxxxx> + + +Description +----------- +CMA3000 Tri-axis accelerometer supports Motion detect, Measurement and +Free fall modes. + +Motion Detect Mode: Its the low power mode where interrupts are generated only +when motion exceeds the defined thresholds. + +Measurement Mode: This mode is used to read the acceleration data on X,Y,Z +axis and supports 400, 100, 40 Hz sample frequency. + +Free fall Mode: This mode is intented to save system resources. + +Threshold values: Chip supports defining threshold values for above modes +which includes time and g value. Refer product specifications for more details. + +CMA3000 chip supports mutually exclusive I2C and SPI interfaces for +communication, currently the driver supports I2C based communication only. +Initial configuration for bus mode is set in non volatile memory and can later +be modified through bus interface command. + +Driver reports acceleration data through input subsystem. It generates ABS_MISC +event with value 1 when free fall is detected. + +Platform data need to be configured for initial default values. + +Platform Data +------------- +fuzz_x: Noise on X Axis + +fuzz_y: Noise on Y Axis + +fuzz_z: Noise on Z Axis + +g_range: G range in milli g i.e 2000 or 8000 + +mode: Default Operating mode + +mdthr: Motion detect g range threshold value + +mdfftmr: Motion detect and free fall time threshold value + +ffthr: Free fall g range threshold value + +Input Interface +-------------- +Input driver version is 1.0.0 +Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0 +Input device name: "cma3000-accelerometer" +Supported events: + Event type 0 (Sync) + Event type 3 (Absolute) + Event code 0 (X) + Value 47 + Min -8000 + Max 8000 + Fuzz 200 + Event code 1 (Y) + Value -28 + Min -8000 + Max 8000 + Fuzz 200 + Event code 2 (Z) + Value 905 + Min -8000 + Max 8000 + Fuzz 200 + Event code 40 (Misc) + Value 0 + Min 0 + Max 1 + Event type 4 (Misc) + + +Register/Platform parameters Description +---------------------------------------- + +mode: + 0: power down mode + 1: 100 Hz Measurement mode + 2: 400 Hz Measurement mode + 3: 40 Hz Measurement mode + 4: Motion Detect mode (default) + 5: 100 Hz Free fall mode + 6: 40 Hz Free fall mode + 7: Power off mode + +grange: + 2000: 2000 mg or 2G Range + 8000: 8000 mg or 8G Range + +mdthr: + X: X * 71mg (8G Range) + X: X * 18mg (2G Range) + +mdfftmr: + X: (X & 0x70) * 100 ms (MDTMR) + (X & 0x0F) * 2.5 ms (FFTMR 400 Hz) + (X & 0x0F) * 10 ms (FFTMR 100 Hz) + +ffthr: + X: (X >> 2) * 18mg (2G Range) + X: (X & 0x0F) * 71 mg (8G Range) diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index b99b8cb..d5e5fd6 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -448,4 +448,28 @@ config INPUT_ADXL34X_SPI To compile this driver as a module, choose M here: the module will be called adxl34x-spi. +config INPUT_CMA3000 + tristate "VTI CMA3000 Tri-axis accelerometer" + help + Say Y here if you want to use VTI CMA3000_D0x Accelerometer + driver + + This driver currently only supports I2C interface to the + controller. Also select the I2C method. + + If unsure, say N + + To compile this driver as a module, choose M here: the + module will be called cma3000_d0x. + +config INPUT_CMA3000_I2C + tristate "Support I2C bus connection" + depends on INPUT_CMA3000 && I2C + help + Say Y here if you want to use VTI CMA3000_D0x Accelerometer + through I2C interface. + + To compile this driver as a module, choose M here: the + module will be called cma3000_d0x_i2c. + endif diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 1fe1f6c..35bcfe4 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -18,6 +18,8 @@ obj-$(CONFIG_INPUT_ATI_REMOTE2) += ati_remote2.o obj-$(CONFIG_INPUT_ATLAS_BTNS) += atlas_btns.o obj-$(CONFIG_INPUT_BFIN_ROTARY) += bfin_rotary.o obj-$(CONFIG_INPUT_CM109) += cm109.o +obj-$(CONFIG_INPUT_CMA3000) += cma3000_d0x.o +obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o diff --git a/drivers/input/misc/cma3000_d0x.c b/drivers/input/misc/cma3000_d0x.c new file mode 100644 index 0000000..158add9 --- /dev/null +++ b/drivers/input/misc/cma3000_d0x.c @@ -0,0 +1,334 @@ +/* + * cma3000_d0x.c + * VTI CMA3000_D0x Accelerometer driver + * Supports I2C interface + * + * Copyright (C) 2010 Texas Instruments + * Author: Hemanth V <hemanthv@xxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/input.h> +#include <linux/platform_device.h> +#include <linux/input/cma3000.h> + +#include "cma3000_d0x.h" + +#define CMA3000_WHOAMI 0x00 +#define CMA3000_REVID 0x01 +#define CMA3000_CTRL 0x02 +#define CMA3000_STATUS 0x03 +#define CMA3000_RSTR 0x04 +#define CMA3000_INTSTATUS 0x05 +#define CMA3000_DOUTX 0x06 +#define CMA3000_DOUTY 0x07 +#define CMA3000_DOUTZ 0x08 +#define CMA3000_MDTHR 0x09 +#define CMA3000_MDFFTMR 0x0A +#define CMA3000_FFTHR 0x0B + +#define CMA3000_RANGE2G (1 << 7) +#define CMA3000_RANGE8G (0 << 7) +#define CMA3000_BUSI2C (0 << 4) +#define CMA3000_MODEMASK (7 << 1) +#define CMA3000_GRANGEMASK (1 << 7) + +#define CMA3000_STATUS_PERR 1 +#define CMA3000_INTSTATUS_FFDET (1 << 2) + +/* Settling time delay in ms */ +#define CMA3000_SETDELAY 30 + +/* Delay for clearing interrupt in us */ +#define CMA3000_INTDELAY 44 + + +/* + * Bit weights in mg for bit 0, other bits need + * multipy factor 2^n. Eight bit is the sign bit. + */ +#define BIT_TO_2G 18 +#define BIT_TO_8G 71 + +#define CMA3000_READ(data, reg, msg) \ + ((data)->bus_ops->read(data, reg, msg)) +#define CMA3000_SET(data, reg, val, msg) \ + ((data)->bus_ops->write(data, reg, val, msg)) +/* + * Conversion for each of the eight modes to g, depending + * on G range i.e 2G or 8G. Some modes always operate in + * 8G. + */ + +static int mode_to_mg[8][2] = { + {0, 0}, + {BIT_TO_8G, BIT_TO_2G}, + {BIT_TO_8G, BIT_TO_2G}, + {BIT_TO_8G, BIT_TO_8G}, + {BIT_TO_8G, BIT_TO_8G}, + {BIT_TO_8G, BIT_TO_2G}, + {BIT_TO_8G, BIT_TO_2G}, + {0, 0}, +}; + +static void decode_mg(struct cma3000_accl_data *data, int *datax, + int *datay, int *dataz) +{ + /* Data in 2's complement, convert to mg */ + *datax = (((s8)(*datax)) * (data->bit_to_mg)); + *datay = (((s8)(*datay)) * (data->bit_to_mg)); + *dataz = (((s8)(*dataz)) * (data->bit_to_mg)); +} + +static irqreturn_t cma3000_thread_irq(int irq, void *dev_id) +{ + struct cma3000_accl_data *data = dev_id; + int datax, datay, dataz; + u8 ctrl, mode, range, intr_status; + + intr_status = CMA3000_READ(data, CMA3000_INTSTATUS, "interrupt status"); + if (intr_status < 0) + return IRQ_NONE; + + /* Check if free fall is detected, report immediately */ + if (intr_status & CMA3000_INTSTATUS_FFDET) { + input_report_abs(data->input_dev, ABS_MISC, 1); + input_sync(data->input_dev); + } else { + input_report_abs(data->input_dev, ABS_MISC, 0); + } + + datax = CMA3000_READ(data, CMA3000_DOUTX, "X"); + datay = CMA3000_READ(data, CMA3000_DOUTY, "Y"); + dataz = CMA3000_READ(data, CMA3000_DOUTZ, "Z"); + + ctrl = CMA3000_READ(data, CMA3000_CTRL, "ctrl"); + mode = (ctrl & CMA3000_MODEMASK) >> 1; + range = (ctrl & CMA3000_GRANGEMASK) >> 7; + + data->bit_to_mg = mode_to_mg[mode][range]; + + /* Interrupt not for this device */ + if (data->bit_to_mg == 0) + return IRQ_NONE; + + /* Decode register values to milli g */ + decode_mg(data, &datax, &datay, &dataz); + + input_report_abs(data->input_dev, ABS_X, datax); + input_report_abs(data->input_dev, ABS_Y, datay); + input_report_abs(data->input_dev, ABS_Z, dataz); + input_sync(data->input_dev); + + return IRQ_HANDLED; +} + +static int cma3000_reset(struct cma3000_accl_data *data) +{ + int ret; + + /* Reset sequence */ + CMA3000_SET(data, CMA3000_RSTR, 0x02, "Reset"); + CMA3000_SET(data, CMA3000_RSTR, 0x0A, "Reset"); + CMA3000_SET(data, CMA3000_RSTR, 0x04, "Reset"); + + /* Settling time delay */ + mdelay(10); + + ret = CMA3000_READ(data, CMA3000_STATUS, "Status"); + if (ret < 0) { + dev_err(&data->client->dev, "Reset failed\n"); + return ret; + } else if (ret & CMA3000_STATUS_PERR) { + dev_err(&data->client->dev, "Parity Error\n"); + return -EIO; + } else { + return 0; + } +} + +int cma3000_poweron(struct cma3000_accl_data *data) +{ + uint8_t ctrl = 0, mdthr, mdfftmr, ffthr, mode; + int g_range, ret; + + g_range = data->pdata.g_range; + mode = data->pdata.mode; + mdthr = data->pdata.mdthr; + mdfftmr = data->pdata.mdfftmr; + ffthr = data->pdata.ffthr; + + if (mode < CMAMODE_DEFAULT || mode > CMAMODE_POFF) { + data->pdata.mode = CMAMODE_MOTDET; + mode = data->pdata.mode; + dev_info(&data->client->dev, + "Invalid mode specified, assuming Motion Detect\n"); + } + + if (g_range == CMARANGE_2G) { + ctrl = (mode << 1) | CMA3000_RANGE2G; + } else if (g_range == CMARANGE_8G) { + ctrl = (mode << 1) | CMA3000_RANGE8G; + } else { + dev_info(&data->client->dev, + "Invalid G range specified, assuming 8G\n"); + ctrl = (mode << 1) | CMA3000_RANGE8G; + data->pdata.g_range = CMARANGE_8G; + } +#if defined CONFIG_INPUT_CMA3000_I2C || defined CONFIG_INPUT_CMA3000_I2C_MODULE + ctrl |= CMA3000_BUSI2C; +#endif + + CMA3000_SET(data, CMA3000_MDTHR, mdthr, "Motion Detect Threshold"); + CMA3000_SET(data, CMA3000_MDFFTMR, mdfftmr, "Time register"); + CMA3000_SET(data, CMA3000_FFTHR, ffthr, "Free fall threshold"); + ret = CMA3000_SET(data, CMA3000_CTRL, ctrl, "Mode setting"); + if (ret < 0) + return -EIO; + + msleep(CMA3000_SETDELAY); + + return 0; +} +EXPORT_SYMBOL(cma3000_poweron); + +int cma3000_poweroff(struct cma3000_accl_data *data) +{ + int ret; + + ret = CMA3000_SET(data, CMA3000_CTRL, CMAMODE_POFF, "Mode setting"); + msleep(CMA3000_SETDELAY); + + return ret; +} +EXPORT_SYMBOL(cma3000_poweroff); + +int cma3000_init(struct cma3000_accl_data *data) +{ + int ret = 0, fuzz_x, fuzz_y, fuzz_z, g_range; + uint32_t irqflags; + + if (data->client->dev.platform_data == NULL) { + dev_err(&data->client->dev, "platform data not found\n"); + ret = -EINVAL; + goto err_op1_failed; + } + + /* if no IRQ return error */ + if (data->client->irq == 0) { + ret = -EINVAL; + goto err_op1_failed; + } + + memcpy(&(data->pdata), data->client->dev.platform_data, + sizeof(struct cma3000_platform_data)); + + ret = cma3000_reset(data); + if (ret) + goto err_op1_failed; + + ret = CMA3000_READ(data, CMA3000_REVID, "Revid"); + if (ret < 0) + goto err_op1_failed; + + pr_info("CMA3000 Accelerometer : Revision %x\n", ret); + + /* Bring it out of default power down state */ + ret = cma3000_poweron(data); + if (ret < 0) + goto err_op1_failed; + + fuzz_x = data->pdata.fuzz_x; + fuzz_y = data->pdata.fuzz_y; + fuzz_z = data->pdata.fuzz_z; + g_range = data->pdata.g_range; + irqflags = data->pdata.irqflags; + + data->input_dev = input_allocate_device(); + if (data->input_dev == NULL) { + ret = -ENOMEM; + dev_err(&data->client->dev, + "Failed to allocate input device\n"); + goto err_op1_failed; + } + + data->input_dev->name = "cma3000-accelerometer"; + +#if defined CONFIG_INPUT_CMA3000_I2C || defined CONFIG_INPUT_CMA3000_I2C_MODULE + data->input_dev->id.bustype = BUS_I2C; +#endif + + __set_bit(EV_ABS, data->input_dev->evbit); + __set_bit(EV_MSC, data->input_dev->evbit); + + input_set_abs_params(data->input_dev, ABS_X, -g_range, + g_range, fuzz_x, 0); + input_set_abs_params(data->input_dev, ABS_Y, -g_range, + g_range, fuzz_y, 0); + input_set_abs_params(data->input_dev, ABS_Z, -g_range, + g_range, fuzz_z, 0); + input_set_abs_params(data->input_dev, ABS_MISC, 0, + 1, 0, 0); + + mutex_init(&data->mutex); + + ret = request_threaded_irq(data->client->irq, NULL, + cma3000_thread_irq, + irqflags | IRQF_ONESHOT, + data->client->name, data); + + if (ret < 0) { + dev_err(&data->client->dev, + "request_threaded_irq failed\n"); + goto err_op2_failed; + } + + ret = input_register_device(data->input_dev); + if (ret) { + dev_err(&data->client->dev, + "Unable to register input device\n"); + goto err_op3_failed; + } + + return 0; + +err_op3_failed: + free_irq(data->client->irq, data); +err_op2_failed: + mutex_destroy(&data->mutex); +err_op1_failed: + input_free_device(data->input_dev); + + return ret; +} +EXPORT_SYMBOL(cma3000_init); + +int cma3000_exit(struct cma3000_accl_data *data) +{ + int ret; + + ret = cma3000_poweroff(data); + free_irq(data->client->irq, data); + mutex_destroy(&data->mutex); + input_unregister_device(data->input_dev); + + return ret; +} +EXPORT_SYMBOL(cma3000_exit); + +MODULE_DESCRIPTION("CMA3000-D0x Accelerometer Driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Hemanth V <hemanthv@xxxxxx>"); diff --git a/drivers/input/misc/cma3000_d0x.h b/drivers/input/misc/cma3000_d0x.h new file mode 100644 index 0000000..107b5fa --- /dev/null +++ b/drivers/input/misc/cma3000_d0x.h @@ -0,0 +1,53 @@ +/* + * cma3000_d0x.h + * VTI CMA3000_D0x Accelerometer driver + * + * Copyright (C) 2010 Texas Instruments + * Author: Hemanth V <hemanthv@xxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _INPUT_CMA3000_H +#define _INPUT_CMA3000_H + +#include <linux/i2c.h> +#include <linux/input.h> + +struct cma3000_accl_data; + +struct cma3000_bus_ops { + u16 bustype; + int (*read) (struct cma3000_accl_data *, u8, char *); + int (*write) (struct cma3000_accl_data *, u8, u8, char *); +}; + +struct cma3000_accl_data { +#if defined CONFIG_INPUT_CMA3000_I2C || defined CONFIG_INPUT_CMA3000_I2C_MODULE + struct i2c_client *client; +#endif + struct input_dev *input_dev; + struct cma3000_platform_data pdata; + + /* mutex for sysfs operations */ + struct mutex mutex; + const struct cma3000_bus_ops *bus_ops; + int bit_to_mg; +}; + +int cma3000_init(struct cma3000_accl_data *); +int cma3000_exit(struct cma3000_accl_data *); +int cma3000_poweron(struct cma3000_accl_data *); +int cma3000_poweroff(struct cma3000_accl_data *); + +#endif diff --git a/drivers/input/misc/cma3000_d0x_i2c.c b/drivers/input/misc/cma3000_d0x_i2c.c new file mode 100644 index 0000000..f843478 --- /dev/null +++ b/drivers/input/misc/cma3000_d0x_i2c.c @@ -0,0 +1,142 @@ +/* + * cma3000_d0x_i2c.c + * + * Implements I2C interface for VTI CMA300_D0x Accelerometer driver + * + * Copyright (C) 2010 Texas Instruments + * Author: Hemanth V <hemanthv@xxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/input/cma3000.h> +#include "cma3000_d0x.h" + +static int cma3000_set(struct cma3000_accl_data *accl, u8 reg, u8 val, + char *msg) +{ + int ret = i2c_smbus_write_byte_data(accl->client, reg, val); + if (ret < 0) + dev_err(&accl->client->dev, + "i2c_smbus_write_byte_data failed (%s)\n", msg); + return ret; +} + +static int cma3000_read(struct cma3000_accl_data *accl, u8 reg, char *msg) +{ + int ret = i2c_smbus_read_byte_data(accl->client, reg); + if (ret < 0) + dev_err(&accl->client->dev, + "i2c_smbus_read_byte_data failed (%s)\n", msg); + return ret; +} + +static const struct cma3000_bus_ops cma3000_i2c_bops = { + .bustype = BUS_I2C, + .read = cma3000_read, + .write = cma3000_set, +}; + +static int __devinit cma3000_accl_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int ret; + struct cma3000_accl_data *data = NULL; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (data == NULL) { + ret = -ENOMEM; + goto err_op_failed; + } + + data->client = client; + i2c_set_clientdata(client, data); + data->bus_ops = &cma3000_i2c_bops; + + ret = cma3000_init(data); + if (ret) + goto err_op_failed; + + return 0; + +err_op_failed: + + kfree(data); + return ret; +} + +static int __devexit cma3000_accl_remove(struct i2c_client *client) +{ + struct cma3000_accl_data *data = i2c_get_clientdata(client); + int ret; + + ret = cma3000_exit(data); + i2c_set_clientdata(client, NULL); + kfree(data); + + return ret; +} + +#ifdef CONFIG_PM +static int cma3000_accl_suspend(struct i2c_client *client, pm_message_t mesg) +{ + struct cma3000_accl_data *data = i2c_get_clientdata(client); + + return cma3000_poweroff(data); +} + +static int cma3000_accl_resume(struct i2c_client *client) +{ + struct cma3000_accl_data *data = i2c_get_clientdata(client); + + return cma3000_poweron(data); +} +#endif + +static const struct i2c_device_id cma3000_id[] = { + { "cma3000_d01", 0 }, + { }, +}; + +static struct i2c_driver cma3000_accl_driver = { + .probe = cma3000_accl_probe, + .remove = cma3000_accl_remove, + .id_table = cma3000_id, +#ifdef CONFIG_PM + .suspend = cma3000_accl_suspend, + .resume = cma3000_accl_resume, +#endif + .driver = { + .name = "cma3000_accl" + }, +}; + +static int __init cma3000_accl_init(void) +{ + return i2c_add_driver(&cma3000_accl_driver); +} + +static void __exit cma3000_accl_exit(void) +{ + i2c_del_driver(&cma3000_accl_driver); +} + +module_init(cma3000_accl_init); +module_exit(cma3000_accl_exit); + +MODULE_DESCRIPTION("CMA3000-D0x Accelerometer Driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Hemanth V <hemanthv@xxxxxx>"); diff --git a/include/linux/input/cma3000.h b/include/linux/input/cma3000.h new file mode 100644 index 0000000..fcddece --- /dev/null +++ b/include/linux/input/cma3000.h @@ -0,0 +1,60 @@ +/* + * cma3000.h + * VTI CMA3000_Dxx Accelerometer driver + * + * Copyright (C) 2010 Texas Instruments + * Author: Hemanth V <hemanthv@xxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _LINUX_CMA3000_H +#define _LINUX_CMA3000_H + +#define CMAMODE_DEFAULT 0 +#define CMAMODE_MEAS100 1 +#define CMAMODE_MEAS400 2 +#define CMAMODE_MEAS40 3 +#define CMAMODE_MOTDET 4 +#define CMAMODE_FF100 5 +#define CMAMODE_FF400 6 +#define CMAMODE_POFF 7 + +#define CMARANGE_2G 2000 +#define CMARANGE_8G 8000 + +/** + * struct cma3000_i2c_platform_data - CMA3000 Platform data + * @fuzz_x: Noise on X Axis + * @fuzz_y: Noise on Y Axis + * @fuzz_z: Noise on Z Axis + * @g_range: G range in milli g i.e 2000 or 8000 + * @mode: Operating mode + * @mdthr: Motion detect threshold value + * @mdfftmr: Motion detect and free fall time value + * @ffthr: Free fall threshold value + */ + +struct cma3000_platform_data { + int fuzz_x; + int fuzz_y; + int fuzz_z; + int g_range; + uint8_t mode; + uint8_t mdthr; + uint8_t mdfftmr; + uint8_t ffthr; + uint32_t irqflags; +}; + +#endif -- 1.5.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
