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 = {
+ .driver = {
+ .name = "iio_snoop",
+ .owner = THIS_MODULE,
+ },
+ .probe = iio_input_probe,
+ .remove = __devexit_p(iio_input_remove),
+};
+
+static int iio_input_init(void)
+{
+ return platform_driver_register(&iio_input_driver);
+}
+module_init(iio_input_init);
+
+static void iio_input_exit(void)
+{
+ 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
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