----- Original Message -----
From: "Murphy, Dan" <dmurphy@xxxxxx>
<SNIP>
+static ssize_t cma3000_store_attr_grange(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct cma3000_accl_data *data = platform_get_drvdata(pdev);
+ unsigned long val;
+ int error, g_range, fuzz_x, fuzz_y, fuzz_z;
+ uint8_t ctrl;
+
+ error = strict_strtoul(buf, 0, &val);
+ if (error)
+ goto err_op1_failed;
+
+ mutex_lock(&data->mutex);
+ ctrl = CMA3000_READ(data, CMA3000_CTRL, "ctrl");
+ if (ctrl < 0) {
+ error = ctrl;
+ goto err_op2_failed;
+ }
+
+ ctrl &= ~CMA3000_GRANGEMASK;
+
+ if (val == CMARANGE_2G) {
+ ctrl |= CMA3000_RANGE2G;
+ data->pdata.g_range = CMARANGE_2G;
+ } else if (val == CMARANGE_8G) {
+ ctrl |= CMA3000_RANGE8G;
+ data->pdata.g_range = CMARANGE_8G;
+ } else {
+ error = -EINVAL;
+ goto err_op2_failed;
+ }
+
+ g_range = data->pdata.g_range;
+ fuzz_x = data->pdata.fuzz_x;
+ fuzz_y = data->pdata.fuzz_y;
+ fuzz_z = data->pdata.fuzz_z;
Can you explain why you store these locally and not just pass in the pdata
values directly to the calls below? This seems to be unneeded code.
I believe this was discussed previously also, basically for ease of reading.
Try passing these huge arguments to functions calls below
+
+ disable_irq(data->client->irq);
+ error = CMA3000_SET(data, CMA3000_CTRL, ctrl, "ctrl");
+ if (error < 0)
+ goto err_op3_failed;
+
+ 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);
+
+err_op3_failed:
+ enable_irq(data->client->irq);
+err_op2_failed:
+ mutex_unlock(&data->mutex);
+err_op1_failed:
+ return error ? error : count;
+}
+
+static ssize_t cma3000_show_attr_mdthr(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ uint8_t mode;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct cma3000_accl_data *data = platform_get_drvdata(pdev);
+
+ mode = CMA3000_READ(data, CMA3000_MDTHR, "mdthr");
+ if (mode < 0)
+ return mode;
+
+ return sprintf(buf, "%d\n", mode);
+}
+
+static ssize_t cma3000_store_attr_mdthr(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct cma3000_accl_data *data = platform_get_drvdata(pdev);
+ unsigned long val;
+ int error;
+
+ error = strict_strtoul(buf, 0, &val);
+ if (error)
+ goto err_op_failed;
+
I am a little concerned that you do not check the value passed in here.
Is there not a range of values you will accept and not accept?
These are bit level description i.e each bit corresponds to a particular mg
value,
hence not a issue.
+ mutex_lock(&data->mutex);
+ data->pdata.mdthr = val;
+ disable_irq(data->client->irq);
+ error = CMA3000_SET(data, CMA3000_MDTHR, val, "mdthr");
+ enable_irq(data->client->irq);
+ mutex_unlock(&data->mutex);
+
+err_op_failed:
+ /* If error value non zero, return error */
+ return error ? error : count;
+}
+
+static ssize_t cma3000_show_attr_mdfftmr(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ uint8_t mode;
+
+ struct platform_device *pdev = to_platform_device(dev);
+ struct cma3000_accl_data *data = platform_get_drvdata(pdev);
+
+ mode = CMA3000_READ(data, CMA3000_MDFFTMR, "mdfftmr");
+ if (mode < 0)
+ return mode;
+
+ return sprintf(buf, "%d\n", mode);
+}
+
+static ssize_t cma3000_store_attr_mdfftmr(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct cma3000_accl_data *data = platform_get_drvdata(pdev);
+ unsigned long val;
+ int error;
+
+ error = strict_strtoul(buf, 0, &val);
+ if (error)
+ goto err_op_failed;
+
I am a little concerned that you do not check the value passed in here.
Is there not a range of values you will accept and not accept?
Same comments as above
+ mutex_lock(&data->mutex);
+ data->pdata.mdfftmr = val;
+ disable_irq(data->client->irq);
+ error = CMA3000_SET(data, CMA3000_MDFFTMR, val, "mdthr");
+ enable_irq(data->client->irq);
+ mutex_unlock(&data->mutex);
+
+err_op_failed:
+ /* If error value non zero, return error */
+ return error ? error : count;
+}
+
+static ssize_t cma3000_show_attr_ffthr(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ uint8_t mode;
+
+ struct platform_device *pdev = to_platform_device(dev);
+ struct cma3000_accl_data *data = platform_get_drvdata(pdev);
+
+ mode = CMA3000_READ(data, CMA3000_FFTHR, "ffthr");
+ if (mode < 0)
+ return mode;
+
+ return sprintf(buf, "%d\n", mode);
+}
+
+static ssize_t cma3000_store_attr_ffthr(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct cma3000_accl_data *data = platform_get_drvdata(pdev);
+ unsigned long val;
+ int error;
+
+ error = strict_strtoul(buf, 0, &val);
+ if (error)
+ goto err_op_failed;
+
Repeating myself here but.
I am a little concerned that you do not check the value passed in here.
Is there not a range of values you will accept and not accept?
Same comments as above
+ mutex_lock(&data->mutex);
+ data->pdata.ffthr = val;
+ disable_irq(data->client->irq);
+ error = CMA3000_SET(data, CMA3000_FFTHR, val, "mdthr");
+ enable_irq(data->client->irq);
+ mutex_unlock(&data->mutex);
+
+err_op_failed:
+ /* If error value non zero, return error */
+ return error ? error : count;
+}
+
+static DEVICE_ATTR(mode, S_IWUSR | S_IRUGO,
+ cma3000_show_attr_mode, cma3000_store_attr_mode);
+
+static DEVICE_ATTR(grange, S_IWUSR | S_IRUGO,
+ cma3000_show_attr_grange, cma3000_store_attr_grange);
+
+static DEVICE_ATTR(mdthr, S_IWUSR | S_IRUGO,
+ cma3000_show_attr_mdthr, cma3000_store_attr_mdthr);
+
+static DEVICE_ATTR(mdfftmr, S_IWUSR | S_IRUGO,
+ cma3000_show_attr_mdfftmr, cma3000_store_attr_mdfftmr);
+
+static DEVICE_ATTR(ffthr, S_IWUSR | S_IRUGO,
+ cma3000_show_attr_ffthr, cma3000_store_attr_ffthr);
+
+
+static struct attribute *cma_attrs[] = {
+ &dev_attr_mode.attr,
+ &dev_attr_grange.attr,
+ &dev_attr_mdthr.attr,
+ &dev_attr_mdfftmr.attr,
+ &dev_attr_ffthr.attr,
+ NULL,
+};
+
+static struct attribute_group cma3000_attr_group = {
+ .attrs = cma_attrs,
+};
+
+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)
You return here but you still have an open report that is not completed
from the free fall. Is that an issue?
And shouldn't an interrupt check be done earlier in this handler?
No free fall event report is complete and interrupt check is also
being done, refer code segment above
+ 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);
Why do you use mdelay instead of msleep? Do you really need to block
during this time? Is this settling time defined in the data sheet? And
why
is this 10ms and not 30ms as defined in other delay use cases?
Yes these delays are defined in data sheet. Since this is called during
probe mdelay is used.
+
+ 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) {
When would this case be exercised? In the set mode interface there is a
range check for mode so technically the mode cannot be set out of range.
This mode is from platform data, hence this check is required.
+ 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;
+
+ mdelay(CMA3000_SETDELAY);
Why do you use mdelay instead of msleep? Do you really need to block
during this time?
Same comment as previous
+
+ return 0;
+}
+EXPORT_SYMBOL(cma3000_poweron);
Why do you export this call and expose it in the header file?
This is required for modules to work.
+
+int cma3000_poweroff(struct cma3000_accl_data *data)
+{
+ int ret;
+
+ ret = CMA3000_SET(data, CMA3000_CTRL, CMAMODE_POFF, "Mode
setting");
+ mdelay(CMA3000_SETDELAY);
Why do you use mdelay instead of msleep? Do you really need to block
during this time?
Same comment as above
+
+ return ret;
+}
+EXPORT_SYMBOL(cma3000_poweroff);
Why do you export this call and expose it in the header file?
Same comment as above
+
+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");
+ goto err_op1_failed;
+ }
+
+ /* if no IRQ return error */
+ if (data->client->irq == 0) {
+ ret = -ENODEV;
+ 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 Acclerometer : 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-acclerometer";
+
+#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 = sysfs_create_group(&data->client->dev.kobj,
&cma3000_attr_group);
+ if (ret) {
+ dev_err(&data->client->dev,
+ "failed to create sysfs entries\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_op2_failed;
Shouldn't you have and err_op3 here to remove the created group on
failure?
Yes this needs to be added, will fix
+ }
+
+ return 0;
+
These error cases do not seem to be complete.
Some of the missing cases are the removal of the sysfs group, destroying
of the request_thread_irq and freeing of the input device before
registering it. I hope these are not handled in a different API this
makes the code hard to verify and validate proper error handling.
Yes, will fix sysfs and irq freeing. Freeing for input device refers
to allocation done through input_allocate_device
+err_op2_failed:
+ mutex_destroy(&data->mutex);
+err_op1_failed:
+ if (data->input_dev != NULL)
+ input_free_device(data->input_dev);
+
+ return ret;
+}
+EXPORT_SYMBOL(cma3000_init);
Why do you export this call and expose it in the header file?
Same comment as above
+
+int cma3000_exit(struct cma3000_accl_data *data)
+{
+ int ret;
+
+ ret = cma3000_poweroff(data);
+
+ if (data->client->irq)
+ free_irq(data->client->irq, data);
+
+ sysfs_remove_group(&data->client->dev.kobj, &cma3000_attr_group);
+ mutex_destroy(&data->mutex);
+ input_unregister_device(data->input_dev);
+ return ret;
+}
+EXPORT_SYMBOL(cma3000_exit);
Why do you export this call and expose it in the header file?
Same comment as above
+
+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..c605465
--- /dev/null
+++ b/drivers/input/misc/cma3000_d0x_i2c.c
@@ -0,0 +1,144 @@
+/*
+ * 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:
+
+ if (data != NULL)
+ 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,
Nitpicking. Spacing is off.
+#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..a3d9fc7
--- /dev/null
+++ b/include/linux/input/cma3000.h
@@ -0,0 +1,60 @@
+/*
+ * cma3000.h
+ * VTI CMA300_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
--
--
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