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bdk: touch: switch to custom chip info cmd

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And also check if chip id is correct on init.
This commit is contained in:
CTCaer
2026-02-20 02:39:54 +02:00
parent 98c14fd3c1
commit c067c113e6
1 changed files with 18 additions and 7 deletions
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25
bdk/input/touch.c
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@@ -66,7 +66,6 @@ static int _touch_wait_event(u8 event, u8 status, u32 timeout, u8 *buf)
return 0; return 0;
} }
retry:
usleep(500); usleep(500);
if (get_tmr_ms() > timer) if (get_tmr_ms() > timer)
@@ -168,18 +167,20 @@ void touch_poll(touch_event_t *event)
touch_info_t *touch_get_chip_info() touch_info_t *touch_get_chip_info()
{ {
u8 buf[FTS4_EVENT_SIZE] = {0}; u8 buf[7] = { 0 };
if (!i2c_recv_buf_small(buf, FTS4_EVENT_SIZE, I2C_3, FTS4_I2C_ADDR, FTS4_CMD_READ_INFO)) // Get chip info.
u8 cmd[3] = { FTS4_CMD_HW_REG_READ, 0, 4 };
if (_touch_read_reg(cmd, sizeof(cmd), buf, sizeof(buf)))
{ {
memset(&_touch_info, 0, sizeof(touch_info_t)); memset(&_touch_info, 0, sizeof(touch_info_t));
goto exit; goto exit;
} }
_touch_info.chip_id = buf[0] << 8 | buf[1]; // 0x3670. _touch_info.chip_id = buf[1] << 8 | buf[2];
_touch_info.fw_ver = buf[2] << 8 | buf[3]; _touch_info.fw_ver = buf[3] << 8 | buf[4];
_touch_info.config_id = buf[4]; // FTB. _touch_info.config_id = buf[5];
_touch_info.config_ver = buf[5]; // FTB. _touch_info.config_ver = buf[6];
exit: exit:
return &_touch_info; return &_touch_info;
@@ -260,6 +261,11 @@ int touch_sys_reset()
int touch_panel_ito_test(u8 *err) int touch_panel_ito_test(u8 *err)
{ {
// Check that touch IC is supported.
touch_info_t *info = touch_get_chip_info();
if (info->chip_id != FTS4_I2C_CHIP_ID)
return 1;
// Reset touchscreen module. // Reset touchscreen module.
if (touch_sys_reset()) if (touch_sys_reset())
return 1; return 1;
@@ -379,6 +385,11 @@ int touch_execute_autotune()
static int touch_init() static int touch_init()
{ {
// Check that touch IC is supported.
touch_info_t *info = touch_get_chip_info();
if (info->chip_id != FTS4_I2C_CHIP_ID)
return 0;
// Initialize touchscreen module. // Initialize touchscreen module.
if (touch_sys_reset()) if (touch_sys_reset())
return 0; return 0;