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touch: get calibration info from OS, if known

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Lephe 2025-03-30 16:01:20 +02:00
parent 282f56fdc1
commit dff487b20a
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GPG key ID: 1BBA026E13FC0495
3 changed files with 22 additions and 0 deletions
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4
include/gint/touch.h
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@ -26,6 +26,10 @@ typedef struct {
/* touch_calib_get() - get calibration information */
extern int touch_calib_get(touch_calibration_t *calib);
/* touch_calib_get_os() - get OS calibration information, if available
Returns 0 on success, negative number if not available. */
extern int touch_calib_get_os(touch_calibration_t *calib);
/* touch_calib_set() - set calibration information */
extern int touch_calib_set(touch_calibration_t *calib);

2
src/touch/driver.c
View file

@ -37,6 +37,8 @@ static void _touch_configure(void)
__touch_drv_info.calibration.dual_debounce_frame = 0;
__touch_drv_info.calibration.dual_sensi_entry = 0x18;
__touch_drv_info.calibration.dual_sensi_leave = 0x24;
touch_calib_get_os(&__touch_drv_info.calibration);
}
/* _touch_hsave() - save hardware state */

16
src/touch/touch.c
View file

@ -35,6 +35,22 @@ int touch_calib_get(touch_calibration_t *calib)
return 0;
}
int touch_calib_get_os(touch_calibration_t *calib)
{
void *os_version = (void *)0x80020020;
if(!memcmp(os_version, "02.01.200", 9) ||
!memcmp(os_version, "02.01.700", 9)) {
int const *os_calibration = (void *)0x8c1bea50;
calib->x_base = os_calibration[0];
calib->y_base = os_calibration[1];
calib->x_div = os_calibration[2];
calib->y_div = os_calibration[3];
return 0;
}
return -1;
}
/* touch_calib_set() - set calibration information */
int touch_calib_set(touch_calibration_t *calib)
{