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path: root/drivers/input/touchscreen
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Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r--drivers/input/touchscreen/goodix.c2
-rw-r--r--drivers/input/touchscreen/ili210x.c26
-rw-r--r--drivers/input/touchscreen/st1232.c48
3 files changed, 63 insertions, 13 deletions
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index 19765f1c04f7..c682b028f0a2 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -157,6 +157,7 @@ static const struct goodix_chip_id goodix_chip_ids[] = {
{ .id = "5663", .data = &gt1x_chip_data },
{ .id = "5688", .data = &gt1x_chip_data },
{ .id = "917S", .data = &gt1x_chip_data },
+ { .id = "9286", .data = &gt1x_chip_data },
{ .id = "911", .data = &gt911_chip_data },
{ .id = "9271", .data = &gt911_chip_data },
@@ -1448,6 +1449,7 @@ static const struct of_device_id goodix_of_match[] = {
{ .compatible = "goodix,gt927" },
{ .compatible = "goodix,gt9271" },
{ .compatible = "goodix,gt928" },
+ { .compatible = "goodix,gt9286" },
{ .compatible = "goodix,gt967" },
{ }
};
diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c
index 199cf3daec10..d8fccf048bf4 100644
--- a/drivers/input/touchscreen/ili210x.c
+++ b/drivers/input/touchscreen/ili210x.c
@@ -29,11 +29,13 @@ struct ili2xxx_chip {
void *buf, size_t len);
int (*get_touch_data)(struct i2c_client *client, u8 *data);
bool (*parse_touch_data)(const u8 *data, unsigned int finger,
- unsigned int *x, unsigned int *y);
+ unsigned int *x, unsigned int *y,
+ unsigned int *z);
bool (*continue_polling)(const u8 *data, bool touch);
unsigned int max_touches;
unsigned int resolution;
bool has_calibrate_reg;
+ bool has_pressure_reg;
};
struct ili210x {
@@ -82,7 +84,8 @@ static int ili210x_read_touch_data(struct i2c_client *client, u8 *data)
static bool ili210x_touchdata_to_coords(const u8 *touchdata,
unsigned int finger,
- unsigned int *x, unsigned int *y)
+ unsigned int *x, unsigned int *y,
+ unsigned int *z)
{
if (touchdata[0] & BIT(finger))
return false;
@@ -137,7 +140,8 @@ static int ili211x_read_touch_data(struct i2c_client *client, u8 *data)
static bool ili211x_touchdata_to_coords(const u8 *touchdata,
unsigned int finger,
- unsigned int *x, unsigned int *y)
+ unsigned int *x, unsigned int *y,
+ unsigned int *z)
{
u32 data;
@@ -169,7 +173,8 @@ static const struct ili2xxx_chip ili211x_chip = {
static bool ili212x_touchdata_to_coords(const u8 *touchdata,
unsigned int finger,
- unsigned int *x, unsigned int *y)
+ unsigned int *x, unsigned int *y,
+ unsigned int *z)
{
u16 val;
@@ -235,7 +240,8 @@ static int ili251x_read_touch_data(struct i2c_client *client, u8 *data)
static bool ili251x_touchdata_to_coords(const u8 *touchdata,
unsigned int finger,
- unsigned int *x, unsigned int *y)
+ unsigned int *x, unsigned int *y,
+ unsigned int *z)
{
u16 val;
@@ -245,6 +251,7 @@ static bool ili251x_touchdata_to_coords(const u8 *touchdata,
*x = val & 0x3fff;
*y = get_unaligned_be16(touchdata + 1 + (finger * 5) + 2);
+ *z = touchdata[1 + (finger * 5) + 4];
return true;
}
@@ -261,6 +268,7 @@ static const struct ili2xxx_chip ili251x_chip = {
.continue_polling = ili251x_check_continue_polling,
.max_touches = 10,
.has_calibrate_reg = true,
+ .has_pressure_reg = true,
};
static bool ili210x_report_events(struct ili210x *priv, u8 *touchdata)
@@ -268,14 +276,16 @@ static bool ili210x_report_events(struct ili210x *priv, u8 *touchdata)
struct input_dev *input = priv->input;
int i;
bool contact = false, touch;
- unsigned int x = 0, y = 0;
+ unsigned int x = 0, y = 0, z = 0;
for (i = 0; i < priv->chip->max_touches; i++) {
- touch = priv->chip->parse_touch_data(touchdata, i, &x, &y);
+ touch = priv->chip->parse_touch_data(touchdata, i, &x, &y, &z);
input_mt_slot(input, i);
if (input_mt_report_slot_state(input, MT_TOOL_FINGER, touch)) {
touchscreen_report_pos(input, &priv->prop, x, y, true);
+ if (priv->chip->has_pressure_reg)
+ input_report_abs(input, ABS_MT_PRESSURE, z);
contact = true;
}
}
@@ -437,6 +447,8 @@ static int ili210x_i2c_probe(struct i2c_client *client,
max_xy = (chip->resolution ?: SZ_64K) - 1;
input_set_abs_params(input, ABS_MT_POSITION_X, 0, max_xy, 0, 0);
input_set_abs_params(input, ABS_MT_POSITION_Y, 0, max_xy, 0, 0);
+ if (priv->chip->has_pressure_reg)
+ input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xa, 0, 0);
touchscreen_parse_properties(input, true, &priv->prop);
error = input_mt_init_slots(input, priv->chip->max_touches,
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index bda96762744e..b4e7bcbe9b91 100644
--- a/drivers/input/touchscreen/st1232.c
+++ b/drivers/input/touchscreen/st1232.c
@@ -26,6 +26,20 @@
#define ST1232_TS_NAME "st1232-ts"
#define ST1633_TS_NAME "st1633-ts"
+#define REG_STATUS 0x01 /* Device Status | Error Code */
+
+#define STATUS_NORMAL 0x00
+#define STATUS_INIT 0x01
+#define STATUS_ERROR 0x02
+#define STATUS_AUTO_TUNING 0x03
+#define STATUS_IDLE 0x04
+#define STATUS_POWER_DOWN 0x05
+
+#define ERROR_NONE 0x00
+#define ERROR_INVALID_ADDRESS 0x10
+#define ERROR_INVALID_VALUE 0x20
+#define ERROR_INVALID_PLATFORM 0x30
+
#define REG_XY_RESOLUTION 0x04
#define REG_XY_COORDINATES 0x12
#define ST_TS_MAX_FINGERS 10
@@ -47,7 +61,8 @@ struct st1232_ts_data {
u8 *read_buf;
};
-static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg)
+static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg,
+ unsigned int n)
{
struct i2c_client *client = ts->client;
struct i2c_msg msg[] = {
@@ -59,7 +74,7 @@ static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg)
{
.addr = client->addr,
.flags = I2C_M_RD | I2C_M_DMA_SAFE,
- .len = ts->read_buf_len,
+ .len = n,
.buf = ts->read_buf,
}
};
@@ -72,6 +87,22 @@ static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg)
return 0;
}
+static int st1232_ts_wait_ready(struct st1232_ts_data *ts)
+{
+ unsigned int retries;
+ int error;
+
+ for (retries = 10; retries; retries--) {
+ error = st1232_ts_read_data(ts, REG_STATUS, 1);
+ if (!error && ts->read_buf[0] == (STATUS_NORMAL | ERROR_NONE))
+ return 0;
+
+ usleep_range(1000, 2000);
+ }
+
+ return -ENXIO;
+}
+
static int st1232_ts_read_resolution(struct st1232_ts_data *ts, u16 *max_x,
u16 *max_y)
{
@@ -79,14 +110,14 @@ static int st1232_ts_read_resolution(struct st1232_ts_data *ts, u16 *max_x,
int error;
/* select resolution register */
- error = st1232_ts_read_data(ts, REG_XY_RESOLUTION);
+ error = st1232_ts_read_data(ts, REG_XY_RESOLUTION, 3);
if (error)
return error;
buf = ts->read_buf;
- *max_x = ((buf[0] & 0x0070) << 4) | buf[1];
- *max_y = ((buf[0] & 0x0007) << 8) | buf[2];
+ *max_x = (((buf[0] & 0x0070) << 4) | buf[1]) - 1;
+ *max_y = (((buf[0] & 0x0007) << 8) | buf[2]) - 1;
return 0;
}
@@ -140,7 +171,7 @@ static irqreturn_t st1232_ts_irq_handler(int irq, void *dev_id)
int count;
int error;
- error = st1232_ts_read_data(ts, REG_XY_COORDINATES);
+ error = st1232_ts_read_data(ts, REG_XY_COORDINATES, ts->read_buf_len);
if (error)
goto out;
@@ -251,6 +282,11 @@ static int st1232_ts_probe(struct i2c_client *client,
input_dev->name = "st1232-touchscreen";
input_dev->id.bustype = BUS_I2C;
+ /* Wait until device is ready */
+ error = st1232_ts_wait_ready(ts);
+ if (error)
+ return error;
+
/* Read resolution from the chip */
error = st1232_ts_read_resolution(ts, &max_x, &max_y);
if (error) {
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-11 16:59:32 +0300