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bdk: touch: use packet i2c for all transfers

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The repeating byte doesn't exist in i2c packet mode.
Additionally, adjust split transfers to one.
This commit is contained in:
CTCaer
2026-02-20 02:36:38 +02:00
parent f6bf40b903
commit 98c14fd3c1
1 changed files with 18 additions and 20 deletions
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38
bdk/input/touch.c
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@@ -58,15 +58,16 @@ static int _touch_wait_event(u8 event, u8 status, u32 timeout, u8 *buf)
while (true)
{
u8 tmp[FTS4_EVENT_SIZE] = {0};
int res = i2c_recv_buf_small(tmp, FTS4_EVENT_SIZE, I2C_3, FTS4_I2C_ADDR, FTS4_CMD_READ_ONE_EVENT);
if (res && tmp[1] == event && tmp[2] == status)
int res = i2c_recv_buf_big(tmp, FTS4_EVENT_SIZE, I2C_3, FTS4_I2C_ADDR, FTS4_CMD_READ_ONE_EVENT);
if (res && tmp[0] == event && tmp[1] == status)
{
if (buf)
memcpy(buf, &tmp[3], 5);
memcpy(buf, &tmp[2], 6);
return 0;
}
usleep(1000);
retry:
usleep(500);
if (get_tmr_ms() > timer)
return 1;
@@ -97,23 +98,23 @@ static void _touch_compensate_limits(touch_event_t *event, bool touching)
static void _touch_process_contact_event(touch_event_t *event, bool touching)
{
event->x = (event->raw[2] << 4) | ((event->raw[4] & FTS4_MASK_Y_LSB) >> 4);
event->x = (event->raw[1] << 4) | ((event->raw[3] & FTS4_MASK_Y_LSB) >> 4);
// Normally, GUI elements have bigger horizontal estate.
// Avoid parsing y axis when finger is removed to minimize touch noise.
if (touching)
{
event->y = (event->raw[3] << 4) | (event->raw[4] & FTS4_MASK_X_MSB);
event->y = (event->raw[2] << 4) | (event->raw[3] & FTS4_MASK_X_MSB);
event->z = event->raw[5] | (event->raw[6] << 8);
event->z = event->raw[4] | (event->raw[5] << 8);
event->z = event->z << 6;
u16 tmp = 0x40;
if ((event->raw[7] & 0x3F) != 1 && (event->raw[7] & 0x3F) != 0x3F)
tmp = event->raw[7] & 0x3F;
if ((event->raw[6] & 0x3F) != 1 && (event->raw[6] & 0x3F) != 0x3F)
tmp = event->raw[6] & 0x3F;
event->z /= tmp + 0x40;
event->fingers = ((event->raw[1] & FTS4_MASK_TOUCH_ID) >> 4) + 1;
event->fingers = ((event->raw[0] & FTS4_MASK_TOUCH_ID) >> 4) + 1;
}
else
event->fingers = 0;
@@ -123,7 +124,7 @@ static void _touch_process_contact_event(touch_event_t *event, bool touching)
static void _touch_parse_input_event(touch_event_t *event)
{
event->type = event->raw[1] & FTS4_MASK_EVENT_ID;
event->type = event->raw[0] & FTS4_MASK_EVENT_ID;
switch (event->type)
{
@@ -160,7 +161,7 @@ static void _touch_parse_input_event(touch_event_t *event)
void touch_poll(touch_event_t *event)
{
i2c_recv_buf_small(event->raw, FTS4_EVENT_SIZE, I2C_3, FTS4_I2C_ADDR, FTS4_CMD_LATEST_EVENT);
i2c_recv_buf_big(event->raw, FTS4_EVENT_SIZE, I2C_3, FTS4_I2C_ADDR, FTS4_CMD_LATEST_EVENT);
_touch_parse_input_event(event);
}
@@ -192,7 +193,7 @@ touch_panel_info_t *touch_get_panel_vendor()
if (_touch_command(FTS4_CMD_VENDOR, &cmd, 1))
return NULL;
u8 buf[5] = { 0 };
u8 buf[6] = { 0 };
if (_touch_wait_event(FTS4_EV_VENDOR, FTS4_VENDOR_GPIO_STATE, 2000, buf))
return NULL;
@@ -213,7 +214,7 @@ touch_panel_info_t *touch_get_panel_vendor()
int touch_get_fw_info(touch_fw_info_t *fw)
{
u8 buf[FTS4_EVENT_SIZE] = {0};
u8 buf[9] = { 0 };
memset(fw, 0, sizeof(touch_fw_info_t));
@@ -229,12 +230,8 @@ int touch_get_fw_info(touch_fw_info_t *fw)
{
fw->fw_id = (buf[1] << 24) | (buf[2] << 16) | (buf[3] << 8) | buf[4];
fw->ftb_ver = (buf[6] << 8) | buf[5];
fw->fw_rev = (buf[8] << 8) | buf[7];
}
cmd[2]++;
res = _touch_read_reg(cmd, sizeof(cmd), buf, 8);
if (!res)
fw->fw_rev = (buf[7] << 8) | buf[6];
}
return res;
@@ -251,6 +248,7 @@ int touch_sys_reset()
continue;
}
msleep(10);
if (_touch_wait_event(FTS4_EV_CONTROLLER_READY, 0, 20, NULL))
continue;
else
@@ -271,7 +269,7 @@ int touch_panel_ito_test(u8 *err)
if (_touch_command(FTS4_CMD_ITO_CHECK, cmd, 2))
return 1;
u8 buf[5] = { 0 };
u8 buf[6] = { 0 };
int res = _touch_wait_event(FTS4_EV_ERROR, 5, 2000, buf);
if (!res && err)
{