i2c: introduce device_i2c_driver() macro ...

Add macro and dependency to avoid boilerplate code. Since now simple
i2c drivers only have to include the i2c.h header and call the
device_i2c_driver() macro to register a i2c device driver.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

param: make parameter functions more consistent ...

This patch creates a consitent set of device parameter functions.

With this we have: dev_add_param_<type><access>

"type" is one of: int32, uint32, int64, uint64, string, mac, ipv4, enum, bitmask
The improvement here is that we now can exactly specify the width of the
int type parameters and also correctly distinguish between signed and
unsigned variables which means that a variable no longer ends up with
INT_MAX when it's assigned -1.

"access" can be empty for regular read/write parameter, "_ro" for readonly
parameters which get their value from a variable pointer in the
background or "_fixed" for parameters which are set to a fixed value
(without a pointer in the background).

Some more exotic types are not (yet) implemented, like
dev_add_param_ip_ro.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb_kbd: release all keys on error / disconnect ...

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: Fix compiler warning ...

Fixes:

drivers/input/input.c:46:17: warning: passing argument 2 of '__set_bit' from incompatible pointer type [-Wincompatible-pointer-types]

idev->keys is an array, so we don't need to take the address of it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: Compile keymap only if necessary ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/input'

Merge branch 'for-next/driver'

usb_kbd: lock is useless since pollers are atomic ...

Signed-off-by: Aleksey Kuleshov <rndfax@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb_kbd: use async polling instead of regular polling ...

This fixes the overpolling of USB keyboard which
causes slowdown of entier barebox by using periodic
polling occuting once per some milliseconds.

Signed-off-by: Aleksey Kuleshov <rndfax@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb_kbd: style fixes ...

Signed-off-by: Aleksey Kuleshov <rndfax@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb_kbd: check for registering error ...

Signed-off-by: Aleksey Kuleshov <rndfax@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb_kbd: remove unused fields ...

Signed-off-by: Aleksey Kuleshov <rndfax@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

driver: replace dev_request_mem_region with dev_request_mem_resource ...

dev_request_mem_region doesn't work properly one some SoCs on which
PTR_ERR() values clash with valid return values from dev_request_mem_region.
Replace them with dev_request_mem_resource where possible.

This patch has been generated with the following semantic patch:

// <smpl>
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
...
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
-	ret = PTR_ERR(io);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
+	ret = PTR_ERR(iores);
...
}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
identifier func;
@@
func(...) {
<+...
struct resource *iores;
-struct resource *iores;
...+>
}
// </smpl>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: usb keyboard: fix CTRL+ combinations ...

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: usb keyboard: fix BACKSPACE ...

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: gpio-keys: convert to input framework ...

To allow asking for the button states.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: gpio-keys: Use KEY_* keycodes ...

The gpio-keys driver takes ascii key codes from platform_data and Linux
keycodes from device tree. Convert the ascii keys over to Linux
keycodes to get rid of the special cases in the driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: imx-keypad: Add device tree support ...

The preparations are done in previous patches, now we only have
to add the device tree compatible and drio the check for platform_data.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: Add device tree parsing support for matrix keymap ...

Add support for parsing the "linux,keymap" property.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: imx-keypad: convert to input framework ...

To make it possible to ask for the button state.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: move matrix_keypad_build_keymap() to C file ...

Future additions will make the function too big to live as a static
inline function. Move to a C file and while at it, move matrix_keypad.h
to include/input/ where it belongs to.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: imx-keypad: Use dev_* functions ...

driver should use dev_* rather than pr_*

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: usb keyboard: convert to input framework ...

Conert the USB keyboard over to the new input core as a first user.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: Add input core ...

Currently all input driver register themselves as consoles. Consoles are
fine for typing text, but they do not allow to ask for the current
pressed state of buttons or keypads. They also do not support non
printable keys like the function keys.

This patch adds a simple input core. On the driver side it supports
input_report_key_event() to report events (button presses and releases).
On the consumer side it allows getting the current button status via
input_key_get_status(). Also an event driven interface is available
which calls a callback whenever an input event is received.
The input core also registers a console for all registered input
devices which handles passing events to the console and stuff like key
repetition, so this can be removed from the drivers once they are
converted to the input core.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

keymap: Add keymap for keys with shift pressed ...

When converting keys to ascii for the console we also need the
keymap with shift pressed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

keymap: Add apostrophe, backslash and home ...

Add some previously undefined keys.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

keymap: Add keypad keys ...

Allow to use the number keypad keys.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

keymap: remove exotic and nonprintable keys ...

We do not need these keys and they do not produce a usable result
either.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

keymap: Fix braces ...

KEY_LEFTBRACE is the '[' key on an english keyboard and KEY_RIGHTBRACE
is the ']' key.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: gpio-keys: implement debouncing ...

The gpio-keys driver often generates multiple events on a single buttong
press. Implement debouncing. The default debouncing time is 20ms and can
be configured with the "debounce-interval" device tree property.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>