xiaomi-sm8450/android_device_xiaomi_sm8450-common
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sm8450-common: udfps: Enable HBM via disp_feature

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Change-Id: I6ffdf1de9b0cf5eb2b479ce3ff66ca4f7e74e17c
This commit is contained in:
Arian
2024-03-14 13:34:17 +01:00
parent ec8786ca3a
commit 1328eabc27
3 changed files with 14 additions and 13 deletions
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1
sepolicy/vendor/hal_fingerprint.te vendored
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@@ -26,6 +26,7 @@ allow hal_fingerprint_default vendor_sysfs_graphics:file rw_file_perms;
allow hal_fingerprint_default vendor_xdsp_device:chr_file r_file_perms;
allow hal_fingerprint_default vendor_xdsp_device:file r_file_perms;
allow hal_fingerprint_default mnt_vendor_file:dir search;
allow hal_fingerprint_default vendor_displayfeature_device:chr_file { ioctl open read write };
get_prop(hal_fingerprint_default, vendor_adsprpc_prop)
get_prop(hal_fingerprint_default, vendor_panel_info_prop)

1
udfps/Android.bp
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@@ -12,6 +12,7 @@ cc_library {
"libbase",
],
header_libs: [
"generated_kernel_headers",
"//hardware/xiaomi:xiaomifingerprint_headers",
],
}

25
udfps/UdfpsHandler.cpp
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@@ -14,6 +14,8 @@
#include <fstream>
#include <thread>
#include <display/drm/mi_disp.h>
#include "UdfpsHandler.h"
#include "xiaomi_touch.h"
@@ -34,21 +36,12 @@
#define TOUCH_IOC_SET_CUR_VALUE _IO(TOUCH_MAGIC, SET_CUR_VALUE)
#define TOUCH_IOC_GET_CUR_VALUE _IO(TOUCH_MAGIC, GET_CUR_VALUE)
#define DISP_PARAM_PATH "sys/devices/virtual/mi_display/disp_feature/disp-DSI-0/disp_param"
#define DISP_PARAM_LOCAL_HBM_MODE "9"
#define DISP_PARAM_LOCAL_HBM_OFF "0"
#define DISP_PARAM_LOCAL_HBM_ON "1"
#define DISP_FEATURE_PATH "/dev/mi_display/disp_feature"
#define FOD_PRESS_STATUS_PATH "/sys/class/touch/touch_dev/fod_press_status"
namespace {
template <typename T>
static void set(const std::string& path, const T& value) {
std::ofstream file(path);
file << value;
}
static bool readBool(int fd) {
char c;
int rc;
@@ -75,6 +68,7 @@ class XiaomiSm8450UdfpsHander : public UdfpsHandler {
void init(fingerprint_device_t* device) {
mDevice = device;
touch_fd_ = android::base::unique_fd(open(TOUCH_DEV_PATH, O_RDWR));
disp_fd_ = android::base::unique_fd(open(DISP_FEATURE_PATH, O_RDWR));
std::thread([this]() {
int fd = open(FOD_PRESS_STATUS_PATH, O_RDONLY);
@@ -156,6 +150,7 @@ class XiaomiSm8450UdfpsHander : public UdfpsHandler {
private:
fingerprint_device_t* mDevice;
android::base::unique_fd touch_fd_;
android::base::unique_fd disp_fd_;
bool enrolling = false;
void setFodStatus(int value) {
@@ -169,9 +164,13 @@ class XiaomiSm8450UdfpsHander : public UdfpsHandler {
int buf[MAX_BUF_SIZE] = {TOUCH_ID, THP_FOD_DOWNUP_CTL, pressed ? 1 : 0};
ioctl(touch_fd_.get(), TOUCH_IOC_SET_CUR_VALUE, &buf);
set(DISP_PARAM_PATH,
std::string(DISP_PARAM_LOCAL_HBM_MODE) + " " +
(pressed ? DISP_PARAM_LOCAL_HBM_ON : DISP_PARAM_LOCAL_HBM_OFF));
// Request HBM
disp_local_hbm_req req;
req.base.flag = 0;
req.base.disp_id = MI_DISP_PRIMARY;
req.local_hbm_value = pressed ? LHBM_TARGET_BRIGHTNESS_WHITE_1000NIT
: LHBM_TARGET_BRIGHTNESS_OFF_FINGER_UP;
ioctl(disp_fd_.get(), MI_DISP_IOCTL_SET_LOCAL_HBM, &req);
}
};