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driver/uinput: add uinput keyboard support

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Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This commit is contained in:
yinshengkai 2022-02-18 21:36:43 +08:00 committed by Petro Karashchenko
parent a0fa07c275
commit bfe29c8d1f
3 changed files with 144 additions and 0 deletions
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8
drivers/input/Kconfig
View file

@ -80,6 +80,14 @@ config UINPUT_BUTTONS
---help---
Enable support virtual input button device driver
config UINPUT_KEYBOARD
bool "Enable uinput keyboard"
select INPUT_KEYBOARD
select INPUT_UINPUT
default n
---help---
Enable support virtual input keyboard device driver
config INPUT_MAX11802
bool "MAX11802 touchscreen controller"
default n

117
drivers/input/uinput.c
View file

@ -27,6 +27,7 @@
#include <stdio.h>
#include <nuttx/input/buttons.h>
#include <nuttx/input/keyboard.h>
#include <nuttx/input/touchscreen.h>
#include <nuttx/input/uinput.h>
#include <nuttx/kmalloc.h>
@ -88,6 +89,15 @@ struct uinput_button_lowerhalf_s
FAR void *arg;
};
struct uinput_keyboard_lowerhalf_s
{
#ifdef CONFIG_UINPUT_RPMSG
struct uinput_context_s ctx;
#endif
struct keyboard_lowerhalf_s lower;
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
@ -144,6 +154,16 @@ static void uinput_button_enable(FAR const struct btn_lowerhalf_s *lower,
#endif /* CONFIG_UINPUT_BUTTONS */
#ifdef CONFIG_UINPUT_KEYBOARD
static ssize_t uinput_keyboard_notify(FAR void *uinput_lower,
FAR const char *buffer, size_t buflen);
static ssize_t uinput_keyboard_write(FAR struct keyboard_lowerhalf_s *lower,
FAR const char *buffer, size_t buflen);
#endif /* CONFIG_UINPUT_KEYBOARD */
/****************************************************************************
* Private Functions
****************************************************************************/
@ -380,6 +400,48 @@ static void uinput_button_enable(FAR const struct btn_lowerhalf_s *lower,
#endif /* CONFIG_UINPUT_BUTTONS */
#ifdef CONFIG_UINPUT_KEYBOARD
/****************************************************************************
* Name: uinput_keyboard_notify
****************************************************************************/
static ssize_t uinput_keyboard_notify(FAR void *uinput_lower,
FAR const char *buffer, size_t buflen)
{
FAR struct uinput_keyboard_lowerhalf_s *ukbd_lower =
(FAR struct uinput_keyboard_lowerhalf_s *)uinput_lower;
FAR struct keyboard_event_s *key = (FAR struct keyboard_event_s *)buffer;
keyboard_event(&ukbd_lower->lower, key->code, key->type);
return buflen;
}
/****************************************************************************
* Name: uinput_keyboard_write
****************************************************************************/
static ssize_t uinput_keyboard_write(FAR struct keyboard_lowerhalf_s *lower,
FAR const char *buffer, size_t buflen)
{
FAR struct keyboard_event_s *key = (FAR struct keyboard_event_s *)buffer;
FAR struct uinput_keyboard_lowerhalf_s *ukbd_lower =
container_of(lower, struct uinput_keyboard_lowerhalf_s, lower);
if (key == NULL || buflen != sizeof(struct keyboard_event_s))
{
return -EINVAL;
}
#ifdef CONFIG_UINPUT_RPMSG
uinput_rpmsg_notify(&ukbd_lower->ctx, buffer, buflen);
#endif
return uinput_keyboard_notify(ukbd_lower, buffer, buflen);
}
#endif /* CONFIG_UINPUT_KEYBOARD */
/****************************************************************************
* Public Functions
****************************************************************************/
@ -489,3 +551,58 @@ int uinput_button_initialize(FAR const char *name)
}
#endif /* CONFIG_UINPUT_BUTTONS */
/****************************************************************************
* Name: uinput_keyboard_initialize
*
* Description:
* Initialized the uinput keyboard device
*
* Input Parameters:
* name: keyboard devices name
*
* Returned Value:
* Zero is returned on success. Otherwise, a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
#ifdef CONFIG_UINPUT_KEYBOARD
int uinput_keyboard_initialize(FAR const char *name)
{
char devname[UINPUT_NAME_SIZE];
FAR struct uinput_keyboard_lowerhalf_s *ukbd_lower;
int ret;
ukbd_lower = kmm_zalloc(sizeof(struct uinput_keyboard_lowerhalf_s));
if (ukbd_lower == NULL)
{
return -ENOMEM;
}
ukbd_lower->lower.write = uinput_keyboard_write;
#ifdef CONFIG_UINPUT_RPMSG
ukbd_lower->ctx.notify = uinput_keyboard_notify;
#endif
/* Regiest Touchscreen device */
snprintf(devname, sizeof(devname), "/dev/%s", name);
ret = keyboard_register(&ukbd_lower->lower, devname);
if (ret < 0)
{
kmm_free(ukbd_lower);
ierr("ERROR: uinput keyboard initialize failed\n");
return ret;
}
#ifdef CONFIG_UINPUT_RPMSG
uinput_rpmsg_initialize(&ukbd_lower->ctx, name);
#endif
return 0;
}
#endif /* CONFIG_UINPUT_KEYBOARD */

19
include/nuttx/input/uinput.h
View file

@ -51,6 +51,25 @@ int uinput_touch_initialize(FAR const char *name, int maxpoint,
int buffnums);
#endif
/****************************************************************************
* Name: uinput_keyboard_initialize
*
* Description:
* Initialized the uinput keyboard device
*
* Input Parameters:
* name: keyboard devices name
*
* Returned Value:
* Zero is returned on success. Otherwise, a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
#ifdef CONFIG_UINPUT_KEYBOARD
int uinput_keyboard_initialize(FAR const char *name);
#endif
/****************************************************************************
* Name: uinput_button_initialize
*