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driver/uinput: add uinput button support

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Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This commit is contained in:
yinshengkai
2021-12-24 16:30:36 +08:00
committed by Xiang Xiao
parent 377c15955e
commit 3bb4e053fe
4 changed files with 201 additions and 2 deletions
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drivers/input/uinput.c
+111 -1
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@@ -26,9 +26,10 @@
#include <errno.h>
#include <stdio.h>
#include <nuttx/kmalloc.h>
#include <nuttx/input/buttons.h>
#include <nuttx/input/touchscreen.h>
#include <nuttx/input/uinput.h>
#include <nuttx/kmalloc.h>
/****************************************************************************
* Pre-processor Definitions
@@ -36,17 +37,50 @@
#define UINPUT_NAME_SIZE 32
/****************************************************************************
* Private Types
****************************************************************************/
struct uinput_button_lowerhalf_s
{
struct btn_lowerhalf_s lower;
btn_buttonset_t buttons;
btn_handler_t handler;
FAR void *arg;
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
#ifdef CONFIG_INPUT_TOUCHSCREEN
static ssize_t uinput_touch_write(FAR struct touch_lowerhalf_s *lower,
FAR const char *buffer, size_t buflen);
#endif
#ifdef CONFIG_INPUT_BUTTONS
static ssize_t uinput_button_write(FAR const struct btn_lowerhalf_s *lower,
FAR const char *buffer, size_t buflen);
static btn_buttonset_t uinput_button_supported(FAR const struct
btn_lowerhalf_s *lower);
static btn_buttonset_t uinput_button_buttons(FAR const struct
btn_lowerhalf_s *lower);
static void uinput_button_enable(FAR const struct btn_lowerhalf_s *lower,
btn_buttonset_t press,
btn_buttonset_t release,
btn_handler_t handler,
FAR void *arg);
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
#ifdef CONFIG_INPUT_TOUCHSCREEN
/****************************************************************************
* Name: uinput_touch_write
****************************************************************************/
@@ -65,6 +99,65 @@ static ssize_t uinput_touch_write(FAR struct touch_lowerhalf_s *lower,
touch_event(lower->priv, sample);
return buflen;
}
#endif /* CONFIG_INPUT_TOUCHSCREEN */
#ifdef CONFIG_INPUT_BUTTONS
/****************************************************************************
* Name: uinput_button_write
****************************************************************************/
static ssize_t uinput_button_write(FAR const struct btn_lowerhalf_s *lower,
FAR const char *buffer, size_t buflen)
{
FAR struct uinput_button_lowerhalf_s *ubtn_lower =
(FAR struct uinput_button_lowerhalf_s *)lower;
if (buflen != sizeof(btn_buttonset_t))
{
return -EINVAL;
}
ubtn_lower->buttons = *(btn_buttonset_t *)buffer;
ubtn_lower->handler(&ubtn_lower->lower, ubtn_lower->arg);
return buflen;
}
/****************************************************************************
* Name: uinput_button_supported
****************************************************************************/
static btn_buttonset_t uinput_button_supported(FAR const struct
btn_lowerhalf_s *lower)
{
return ~0u;
}
/****************************************************************************
* Name: uinput_button_buttons
****************************************************************************/
static btn_buttonset_t
uinput_button_buttons(FAR const struct btn_lowerhalf_s *lower)
{
FAR struct uinput_button_lowerhalf_s *ubtn_lower =
(FAR struct uinput_button_lowerhalf_s *)lower;
return ubtn_lower->buttons;
}
static void uinput_button_enable(FAR const struct btn_lowerhalf_s *lower,
btn_buttonset_t press,
btn_buttonset_t release,
btn_handler_t handler, FAR void *arg)
{
FAR struct uinput_button_lowerhalf_s *ubtn_lower =
(FAR struct uinput_button_lowerhalf_s *)lower;
ubtn_lower->arg = arg;
ubtn_lower->handler = handler;
}
#endif /* CONFIG_INPUT_BUTTONS */
/****************************************************************************
* Public Functions
@@ -106,3 +199,20 @@ int uinput_touch_initialize(FAR const char *name, int maxpoint, int buffnums)
return touch_register(lower, devname, buffnums);
}
#ifdef CONFIG_INPUT_BUTTONS
int uinput_button_initialize(FAR const char *name)
{
char devname[UINPUT_NAME_SIZE];
FAR struct uinput_button_lowerhalf_s *ubtn_lower;
ubtn_lower = kmm_zalloc(sizeof(struct uinput_button_lowerhalf_s));
ubtn_lower->lower.bl_buttons = uinput_button_buttons;
ubtn_lower->lower.bl_enable = uinput_button_enable;
ubtn_lower->lower.bl_supported = uinput_button_supported;
ubtn_lower->lower.bl_write = uinput_button_write;
snprintf(devname, UINPUT_NAME_SIZE, "/dev/%s", name);
return btn_register(devname, &ubtn_lower->lower);
}
#endif /* CONFIG_INPUT_BUTTONS */