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hosted: Have common /dev/input code handle touchscreens.

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With this we should be able to consolidate some of the hosted
variations.

Change-Id: Ie03631b4e700e3a0adcdc1b8476237384f0ace1a
This commit is contained in:
Solomon Peachy 2025-05-02 21:27:11 -04:00
parent f38109f8ed
commit 3270daf2c4
2 changed files with 140 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

161
firmware/target/hosted/button-devinput.c
View file

@ -92,7 +92,79 @@ static int button_delay_release = 0;
static int delay_tick = 0;
#endif
int button_read_device(void)
#ifdef HAVE_TOUCHSCREEN
/* Last known touchscreen coordinates. */
static int _last_x = 0;
static int _last_y = 0;
/* Last known touchscreen state. */
static enum
{
TOUCHSCREEN_STATE_UNKNOWN = 0,
TOUCHSCREEN_STATE_UP,
TOUCHSCREEN_STATE_DOWN
} _last_touch_state = TOUCHSCREEN_STATE_UNKNOWN;
// XXX ... figure out what is standard.
#define EVENT_VALUE_TOUCHSCREEN_PRESS 1
#define EVENT_VALUE_TOUCHSCREEN_RELEASE -1
static int ts_enabled = 0;
void touchscreen_enable_device(bool en)
{
ts_enabled = en;
}
static bool handle_touchscreen_event(__u16 code, __s32 value)
{
bool read_more = false;
switch(code)
{
case ABS_MT_POSITION_X:
{
_last_x = value;
/* x -> next will be y. */
read_more = true;
break;
}
case ABS_MT_POSITION_Y:
{
_last_y = value;
break;
}
case ABS_MT_TRACKING_ID:
{
if(value == EVENT_VALUE_TOUCHSCREEN_PRESS)
{
_last_touch_state = TOUCHSCREEN_STATE_DOWN;
/* Press -> next will be x. */
read_more = true;
}
else
{
_last_touch_state = TOUCHSCREEN_STATE_UP;
}
break;
}
}
return read_more;
}
#endif
#ifdef HAVE_TOUCHSCREEN
#define BDATA int *data
#else
#define BDATA void
#endif
int button_read_device(BDATA)
{
static int button_bitmap = 0;
struct input_event event;
@ -121,44 +193,62 @@ int button_read_device(void)
int size = read(poll_fds[i].fd, &event, sizeof(event));
if(size == (int)sizeof(event))
{
/* map linux event code to rockbox button bitmap */
int bmap = button_map(event.code);
switch(event.type) {
case EV_KEY: {
/* map linux event code to rockbox button bitmap */
int bmap = button_map(event.code);
/* event.value == 0x10000 means press
* event.value == 0 means release
*/
if(event.value)
{
#ifdef HAVE_SCROLLWHEEL
/* Filter out wheel ticks */
if (bmap & BUTTON_SCROLL_BACK)
wheel_ticks--;
else if (bmap & BUTTON_SCROLL_FWD)
wheel_ticks++;
bmap &= ~(BUTTON_SCROLL_BACK|BUTTON_SCROLL_FWD);
#endif
#ifdef BUTTON_DELAY_RELEASE
bmap &= ~BUTTON_DELAY_RELEASE;
#endif
button_bitmap |= bmap;
}
else
{
#ifdef BUTTON_DELAY_RELEASE
/* Delay the release of any requested buttons */
if (bmap & BUTTON_DELAY_RELEASE)
/* event.value == 0x10000 means press
* event.value == 0 means release
*/
if(event.value)
{
button_delay_release |= bmap & ~BUTTON_DELAY_RELEASE;
delay_tick = current_tick + HZ/20;
bmap = 0;
}
#ifdef HAVE_SCROLLWHEEL
/* Filter out wheel ticks */
if (bmap & BUTTON_SCROLL_BACK)
wheel_ticks--;
else if (bmap & BUTTON_SCROLL_FWD)
wheel_ticks++;
bmap &= ~(BUTTON_SCROLL_BACK|BUTTON_SCROLL_FWD);
#endif
#ifdef BUTTON_DELAY_RELEASE
bmap &= ~BUTTON_DELAY_RELEASE;
#endif
button_bitmap |= bmap;
}
else
{
#ifdef BUTTON_DELAY_RELEASE
/* Delay the release of any requested buttons */
if (bmap & BUTTON_DELAY_RELEASE)
{
button_delay_release |= bmap & ~BUTTON_DELAY_RELEASE;
delay_tick = current_tick + HZ/20;
bmap = 0;
}
#endif
}
#ifdef HAVE_SCROLLWHEEL
/* Wheel gives us press+release back to back; ignore the release */
bmap &= ~(BUTTON_SCROLL_BACK|BUTTON_SCROLL_FWD);
#endif
button_bitmap &= ~bmap;
break;
}
#ifdef HAVE_TOUCHSCREEN
case EV_ABS: {
if (ts_enabled) {
handle_touchscreen_event(event.code, event.value);
} else {
/* If disabled... ignore */
_last_touch_state = TOUCHSCREEN_STATE_UNKNOWN;
}
break;
}
#endif
default:
/* Ignore other event types */
break;
}
}
}
@ -193,5 +283,14 @@ int button_read_device(void)
}
#endif /* HAVE_SCROLLWHEEL */
#ifdef HAVE_TOUCHSCREEN
int touch = touchscreen_to_pixels(_last_x, _last_y, data);
if(_last_touch_state == TOUCHSCREEN_STATE_DOWN)
{
return button_bitmap | touch;
}
#endif
return button_bitmap;
}

14
firmware/target/hosted/system-hosted.c
View file

@ -125,10 +125,16 @@ void system_exception_wait(void)
backlight_hw_on();
backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
/* wait until button press and release */
while(button_read_device() != 0) {}
while(button_read_device() == 0) {}
while(button_read_device() != 0) {}
while(button_read_device() == 0) {}
#ifdef HAVE_BUTTON_DATA
int bdata;
#define BDATA &bdata
#else
#define BDATA
#endif
while(button_read_device(BDATA) != 0) {}
while(button_read_device(BDATA) == 0) {}
while(button_read_device(BDATA) != 0) {}
while(button_read_device(BDATA) == 0) {}
}
bool hostfs_removable(IF_MD_NONVOID(int drive))