Hi Jonathan,
On Sat, Mar 03, 2012 at 12:09:11PM +0000, Jonathan Cameron wrote:
> From: Jonathan Cameron <jic23@xxxxxxxxx>
>
> This is no where near ready to merge. Lots of stuff missing.
>
> Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
> ---
> drivers/staging/iio/Kconfig | 10 ++++
> drivers/staging/iio/Makefile | 1 +
> drivers/staging/iio/iio_input.c | 106 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 117 insertions(+)
>
> diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig
> index 4aff125..a599f16 100644
> --- a/drivers/staging/iio/Kconfig
> +++ b/drivers/staging/iio/Kconfig
> @@ -11,6 +11,16 @@ menuconfig IIO
> number of different physical interfaces (i2c, spi, etc). See
> drivers/staging/iio/Documentation for more information.
> if IIO
> +
> +config IIO_ST_INPUT
> + tristate "Input driver that uses channels specified via iio maps"
> + depends on INPUT
> + depends on IIO_BUFFER
> + select IIO_BUFFER_CB
> + help
> + Proof of concept user of the in kernel push interface. Not anywhere
> + near ready for production use.
> +
> config IIO_ST_HWMON
> tristate "Hwmon driver that uses channels specified via iio maps"
> depends on HWMON
> diff --git a/drivers/staging/iio/Makefile b/drivers/staging/iio/Makefile
> index f55de94..f64c93b 100644
> --- a/drivers/staging/iio/Makefile
> +++ b/drivers/staging/iio/Makefile
> @@ -19,6 +19,7 @@ iio_dummy-$(CONFIG_IIO_SIMPLE_DUMMY_BUFFER) += iio_simple_dummy_buffer.o
> obj-$(CONFIG_IIO_DUMMY_EVGEN) += iio_dummy_evgen.o
>
> obj-$(CONFIG_IIO_ST_HWMON) += iio_hwmon.o
> +obj-$(CONFIG_IIO_ST_INPUT) += iio_input.o
>
> obj-y += accel/
> obj-y += adc/
> diff --git a/drivers/staging/iio/iio_input.c b/drivers/staging/iio/iio_input.c
> new file mode 100644
> index 0000000..2481901
> --- /dev/null
> +++ b/drivers/staging/iio/iio_input.c
> @@ -0,0 +1,106 @@
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/module.h>
> +#include <linux/err.h>
> +#include <linux/platform_device.h>
> +#include <linux/input.h>
> +#include "buffer.h"
> +#include "consumer.h"
> +
> +struct iio_input_state {
> + struct iio_cb_buffer *buff;
> + struct input_dev *idev;
> +};
> +
> +static int iio_input_store_to(u8 *data, void *private)
> +{
> + struct iio_input_state *st = private;
> +
> + /* DUMMY - need to put boiler plate conversion code
> + * in place */
> + input_report_abs(st->idev, ABS_X, data[0]);
> + input_sync(st->idev);
> +
> + return 0;
> +}
> +
> +static int __devinit iio_input_probe(struct platform_device *pdev)
> +{
> + struct iio_input_state *st;
> + int ret;
> +
> + st = kzalloc(sizeof(*st), GFP_KERNEL);
> + if (st == NULL)
> + return -ENOMEM;
> + platform_set_drvdata(pdev, st);
> + st->buff = iio_st_channel_get_all_cb(dev_name(&pdev->dev),
> + &iio_input_store_to,
> + st);
> + if (IS_ERR(st->buff)) {
> + ret = PTR_ERR(st->buff);
> + goto error_free_state;
> + }
> +
> + st->idev = input_allocate_device();
> + if (!st->idev) {
> + ret = -ENOMEM;
> + goto error_channels_release_all;
> + }
> +
> + __set_bit(EV_ABS, st->idev->evbit);
> + /* DUMMY DATA - need to actually make this available */
> + input_set_abs_params(st->idev, ABS_X, 0, 100, 0, 0);
> +
> + ret = input_register_device(st->idev);
> + if (ret < 0)
> + goto error_free_idev;
> +
> + /* NORMALLY IN THE OPEN */
> + iio_st_channel_start_all_cb(st->buff);
> +
> + return 0;
> +error_free_idev:
> + input_free_device(st->idev);
> +error_channels_release_all:
> + iio_st_channel_release_all_cb(st->buff);
> +error_free_state:
> + kfree(st);
> + return ret;
> +}
> +
> +static int __devexit iio_input_remove(struct platform_device *pdev)
> +{
> + struct iio_input_state *st = platform_get_drvdata(pdev);
> + /* NORMALLY IN THE CLOSE */
> + iio_st_channel_stop_all_cb(st->buff);
> + input_unregister_device(st->idev);
> + iio_st_channel_release_all_cb(st->buff);
> +
> + kfree(st);
> + return 0;
> +}
> +
> +static struct platform_driver __refdata iio_input_driver = {
Why is this __refdata?
> + .driver = {
> + .name = "iio_snoop",
> + .owner = THIS_MODULE,
> + },
> + .probe = iio_input_probe,
> + .remove = __devexit_p(iio_input_remove),
> +};
> +
> +static int iio_input_init(void)
__init
> +{
> + return platform_driver_register(&iio_input_driver);
> +}
> +module_init(iio_input_init);
> +
> +static void iio_input_exit(void)
__exit
> +{
> + platform_driver_unregister(&iio_input_driver);
> +}
> +module_exit(iio_input_exit);
> +
> +MODULE_AUTHOR("Jonathan Cameron <jic23@xxxxxxxxx>");
> +MODULE_DESCRIPTION("IIO input buffer driver");
> +MODULE_LICENSE("GPL v2");
> --
> 1.7.9.2
>
Thanks.
--
Dmitry
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