Hi,
I m implementing a driver for accelerometer KXSD9 in linux kernel 2.6.24.7 for
OMAP-3430. KXSD9 sensor will be connected to the i2c bus so it will be an i2c
client.
I m implementing a new style driver, so following are the steps that I m
following:
1. Putting the device info (busnum, address, irq) in the board specific
initialization code. From this the i2c-core will create a client for my device
when the corresponding bus adapter (i2c_adapter) is registered.
2. I m implementing the following i2c_driver for my device
struct i2c_driver KXSD9_i2c_driver =
{
.driver = {
.name = "KXSD9_driver",
},
.probe = KXSD9_probe, /* this will do the device initialization */
.remove = KXSD9_remove,
.shutdown = KXSD9_shutdown,
.suspend = KXSD9_suspend,
.resume = KXSD9_resume,
};
3. My requirement is that I need to export the file operations (specific ioctl
commands) to the user space. I am not sure how it has to be done from this
driver????
I thought of the following approach:
Registering a misc device to export the file operations
int __init KXSD9_driver_init()
{
/*Provide /dev interface to user space and export the file
operations */
misc_register(&KXSD9_misc_device);
/*Request the IRQ and install the interrupt handler*/
request_irq(.. KXSD9_IRQ . .);
/*Add the i2c_driver*/
i2c_add_driver(&KXSD9_i2c_driver);
}
Is this the correct way of doing it???????? Or the file operations should be
exported using some other method in case of i2c_drivers????
Your reply will be highly helpful… Thanks in advance….
Varun
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