#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/slab.h>
+#include <asm/unaligned.h>
/* Version */
#define MXT_VER_20 20
#define MXT_SPT_DIGITIZER_T43 43
#define MXT_SPT_MESSAGECOUNT_T44 44
#define MXT_SPT_CTECONFIG_T46 46
+#define MXT_TOUCH_MULTITOUCHSCREEN_T100 100
/* MXT_GEN_MESSAGE_T5 object */
#define MXT_RPTID_NOMSG 0xff
#define MXT_RESET_VALUE 0x01
#define MXT_BACKUP_VALUE 0x55
+/* T100 Multiple Touch Touchscreen */
+#define MXT_T100_CTRL 0
+#define MXT_T100_CFG1 1
+#define MXT_T100_TCHAUX 3
+#define MXT_T100_XRANGE 13
+#define MXT_T100_YRANGE 24
+
+#define MXT_T100_CFG_SWITCHXY BIT(5)
+
+#define MXT_T100_TCHAUX_VECT BIT(0)
+#define MXT_T100_TCHAUX_AMPL BIT(1)
+#define MXT_T100_TCHAUX_AREA BIT(2)
+
+#define MXT_T100_DETECT BIT(7)
+#define MXT_T100_TYPE_MASK 0x70
+
+enum t100_type {
+ MXT_T100_TYPE_FINGER = 1,
+ MXT_T100_TYPE_PASSIVE_STYLUS = 2,
+ MXT_T100_TYPE_HOVERING_FINGER = 4,
+ MXT_T100_TYPE_GLOVE = 5,
+ MXT_T100_TYPE_LARGE_TOUCH = 6,
+};
+
+#define MXT_DISTANCE_ACTIVE_TOUCH 0
+#define MXT_DISTANCE_HOVERING 1
+
+#define MXT_TOUCH_MAJOR_DEFAULT 1
+#define MXT_PRESSURE_DEFAULT 1
+
/* Delay times */
#define MXT_BACKUP_TIME 50 /* msec */
#define MXT_RESET_TIME 200 /* msec */
unsigned int max_y;
bool in_bootloader;
u16 mem_size;
+ u8 t100_aux_ampl;
+ u8 t100_aux_area;
+ u8 t100_aux_vect;
u8 max_reportid;
u32 config_crc;
u32 info_crc;
bool update_input;
u8 last_message_count;
u8 num_touchids;
+ u8 multitouch;
/* Cached parameters from object table */
u16 T5_address;
u8 T9_reportid_max;
u8 T19_reportid;
u16 T44_address;
+ u8 T100_reportid_min;
+ u8 T100_reportid_max;
/* for fw update in bootloader */
struct completion bl_completion;
data->update_input = true;
}
+static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
+{
+ struct device *dev = &data->client->dev;
+ struct input_dev *input_dev = data->input_dev;
+ int id;
+ u8 status;
+ u8 type = 0;
+ u16 x;
+ u16 y;
+ int distance = 0;
+ int tool = 0;
+ u8 major = 0;
+ u8 pressure = 0;
+ u8 orientation = 0;
+
+ id = message[0] - data->T100_reportid_min - 2;
+
+ /* ignore SCRSTATUS events */
+ if (id < 0)
+ return;
+
+ status = message[1];
+ x = get_unaligned_le16(&message[2]);
+ y = get_unaligned_le16(&message[4]);
+
+ if (status & MXT_T100_DETECT) {
+ type = (status & MXT_T100_TYPE_MASK) >> 4;
+
+ switch (type) {
+ case MXT_T100_TYPE_HOVERING_FINGER:
+ tool = MT_TOOL_FINGER;
+ distance = MXT_DISTANCE_HOVERING;
+
+ if (data->t100_aux_vect)
+ orientation = message[data->t100_aux_vect];
+
+ break;
+
+ case MXT_T100_TYPE_FINGER:
+ case MXT_T100_TYPE_GLOVE:
+ tool = MT_TOOL_FINGER;
+ distance = MXT_DISTANCE_ACTIVE_TOUCH;
+
+ if (data->t100_aux_area)
+ major = message[data->t100_aux_area];
+
+ if (data->t100_aux_ampl)
+ pressure = message[data->t100_aux_ampl];
+
+ if (data->t100_aux_vect)
+ orientation = message[data->t100_aux_vect];
+
+ break;
+
+ case MXT_T100_TYPE_PASSIVE_STYLUS:
+ tool = MT_TOOL_PEN;
+
+ /*
+ * Passive stylus is reported with size zero so
+ * hardcode.
+ */
+ major = MXT_TOUCH_MAJOR_DEFAULT;
+
+ if (data->t100_aux_ampl)
+ pressure = message[data->t100_aux_ampl];
+
+ break;
+
+ case MXT_T100_TYPE_LARGE_TOUCH:
+ /* Ignore suppressed touch */
+ break;
+
+ default:
+ dev_dbg(dev, "Unexpected T100 type\n");
+ return;
+ }
+ }
+
+ /*
+ * Values reported should be non-zero if tool is touching the
+ * device
+ */
+ if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER)
+ pressure = MXT_PRESSURE_DEFAULT;
+
+ input_mt_slot(input_dev, id);
+
+ if (status & MXT_T100_DETECT) {
+ dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n",
+ id, type, x, y, major, pressure, orientation);
+
+ input_mt_report_slot_state(input_dev, tool, 1);
+ input_report_abs(input_dev, ABS_MT_POSITION_X, x);
+ input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
+ input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major);
+ input_report_abs(input_dev, ABS_MT_PRESSURE, pressure);
+ input_report_abs(input_dev, ABS_MT_DISTANCE, distance);
+ input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation);
+ } else {
+ dev_dbg(dev, "[%u] release\n", id);
+
+ /* close out slot */
+ input_mt_report_slot_state(input_dev, 0, 0);
+ }
+
+ data->update_input = true;
+}
+
static int mxt_proc_message(struct mxt_data *data, u8 *message)
{
u8 report_id = message[0];
* is not yet registered.
*/
mxt_dump_message(data, message);
- } else if (report_id >= data->T9_reportid_min
- && report_id <= data->T9_reportid_max) {
+ } else if (report_id >= data->T9_reportid_min &&
+ report_id <= data->T9_reportid_max) {
mxt_proc_t9_message(data, message);
+ } else if (report_id >= data->T100_reportid_min &&
+ report_id <= data->T100_reportid_max) {
+ mxt_proc_t100_message(data, message);
} else if (report_id == data->T19_reportid) {
mxt_input_button(data, message);
data->update_input = true;
data->T9_reportid_max = 0;
data->T19_reportid = 0;
data->T44_address = 0;
+ data->T100_reportid_min = 0;
+ data->T100_reportid_max = 0;
data->max_reportid = 0;
}
data->T7_address = object->start_address;
break;
case MXT_TOUCH_MULTI_T9:
+ data->multitouch = MXT_TOUCH_MULTI_T9;
data->T9_reportid_min = min_id;
data->T9_reportid_max = max_id;
data->num_touchids = object->num_report_ids
case MXT_SPT_GPIOPWM_T19:
data->T19_reportid = min_id;
break;
+ case MXT_TOUCH_MULTITOUCHSCREEN_T100:
+ data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100;
+ data->T100_reportid_min = min_id;
+ data->T100_reportid_max = max_id;
+ /* first two report IDs reserved */
+ data->num_touchids = object->num_report_ids - 2;
+ break;
}
end_address = object->start_address
return 0;
}
+static int mxt_read_t100_config(struct mxt_data *data)
+{
+ struct i2c_client *client = data->client;
+ int error;
+ struct mxt_object *object;
+ u16 range_x, range_y;
+ u8 cfg, tchaux;
+ u8 aux;
+
+ object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100);
+ if (!object)
+ return -EINVAL;
+
+ error = __mxt_read_reg(client,
+ object->start_address + MXT_T100_XRANGE,
+ sizeof(range_x), &range_x);
+ if (error)
+ return error;
+
+ le16_to_cpus(&range_x);
+
+ error = __mxt_read_reg(client,
+ object->start_address + MXT_T100_YRANGE,
+ sizeof(range_y), &range_y);
+ if (error)
+ return error;
+
+ le16_to_cpus(&range_y);
+
+ error = __mxt_read_reg(client,
+ object->start_address + MXT_T100_CFG1,
+ 1, &cfg);
+ if (error)
+ return error;
+
+ error = __mxt_read_reg(client,
+ object->start_address + MXT_T100_TCHAUX,
+ 1, &tchaux);
+ if (error)
+ return error;
+
+ /* Handle default values */
+ if (range_x == 0)
+ range_x = 1023;
+
+ if (range_y == 0)
+ range_y = 1023;
+
+ if (cfg & MXT_T100_CFG_SWITCHXY) {
+ data->max_x = range_y;
+ data->max_y = range_x;
+ } else {
+ data->max_x = range_x;
+ data->max_y = range_y;
+ }
+
+ /* allocate aux bytes */
+ aux = 6;
+
+ if (tchaux & MXT_T100_TCHAUX_VECT)
+ data->t100_aux_vect = aux++;
+
+ if (tchaux & MXT_T100_TCHAUX_AMPL)
+ data->t100_aux_ampl = aux++;
+
+ if (tchaux & MXT_T100_TCHAUX_AREA)
+ data->t100_aux_area = aux++;
+
+ dev_dbg(&client->dev,
+ "T100 aux mappings vect:%u ampl:%u area:%u\n",
+ data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area);
+
+ dev_info(&client->dev,
+ "T100 Touchscreen size X%uY%u\n", data->max_x, data->max_y);
+
+ return 0;
+}
+
static int mxt_input_open(struct input_dev *dev);
static void mxt_input_close(struct input_dev *dev);
-static int mxt_initialize_t9_input_device(struct mxt_data *data)
+static int mxt_initialize_input_device(struct mxt_data *data)
{
struct device *dev = &data->client->dev;
const struct mxt_platform_data *pdata = data->pdata;
unsigned int mt_flags = 0;
int i;
- error = mxt_read_t9_resolution(data);
- if (error)
- dev_warn(dev, "Failed to initialize T9 resolution\n");
+ switch (data->multitouch) {
+ case MXT_TOUCH_MULTI_T9:
+ num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1;
+ error = mxt_read_t9_resolution(data);
+ if (error)
+ dev_warn(dev, "Failed to initialize T9 resolution\n");
+ break;
+
+ case MXT_TOUCH_MULTITOUCHSCREEN_T100:
+ num_mt_slots = data->num_touchids;
+ error = mxt_read_t100_config(data);
+ if (error)
+ dev_warn(dev, "Failed to read T100 config\n");
+ break;
+
+ default:
+ dev_err(dev, "Invalid multitouch object\n");
+ return -EINVAL;
+ }
input_dev = input_allocate_device();
if (!input_dev) {
input_dev->open = mxt_input_open;
input_dev->close = mxt_input_close;
- __set_bit(EV_ABS, input_dev->evbit);
- __set_bit(EV_KEY, input_dev->evbit);
- __set_bit(BTN_TOUCH, input_dev->keybit);
+ input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
if (pdata->t19_num_keys) {
__set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
}
/* For single touch */
- input_set_abs_params(input_dev, ABS_X,
- 0, data->max_x, 0, 0);
- input_set_abs_params(input_dev, ABS_Y,
- 0, data->max_y, 0, 0);
- input_set_abs_params(input_dev, ABS_PRESSURE,
- 0, 255, 0, 0);
+ input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0);
+
+ if (data->multitouch == MXT_TOUCH_MULTI_T9 ||
+ (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+ data->t100_aux_ampl)) {
+ input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0);
+ }
/* For multi touch */
- num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1;
error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags);
if (error) {
dev_err(dev, "Error %d initialising slots\n", error);
goto err_free_mem;
}
- input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
- 0, MXT_MAX_AREA, 0, 0);
+ if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) {
+ input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE,
+ 0, MT_TOOL_MAX, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_DISTANCE,
+ MXT_DISTANCE_ACTIVE_TOUCH,
+ MXT_DISTANCE_HOVERING,
+ 0, 0);
+ }
+
input_set_abs_params(input_dev, ABS_MT_POSITION_X,
0, data->max_x, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
0, data->max_y, 0, 0);
- input_set_abs_params(input_dev, ABS_MT_PRESSURE,
- 0, 255, 0, 0);
+
+ if (data->multitouch == MXT_TOUCH_MULTI_T9 ||
+ (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+ data->t100_aux_area)) {
+ input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
+ 0, MXT_MAX_AREA, 0, 0);
+ }
+
+ if (data->multitouch == MXT_TOUCH_MULTI_T9 ||
+ (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+ data->t100_aux_ampl)) {
+ input_set_abs_params(input_dev, ABS_MT_PRESSURE,
+ 0, 255, 0, 0);
+ }
+
+ if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+ data->t100_aux_vect) {
+ input_set_abs_params(input_dev, ABS_MT_ORIENTATION,
+ 0, 255, 0, 0);
+ }
+
+ if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+ data->t100_aux_ampl) {
+ input_set_abs_params(input_dev, ABS_MT_PRESSURE,
+ 0, 255, 0, 0);
+ }
+
+ if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+ data->t100_aux_vect) {
+ input_set_abs_params(input_dev, ABS_MT_ORIENTATION,
+ 0, 255, 0, 0);
+ }
input_set_drvdata(input_dev, data);
dev_warn(dev, "Error %d updating config\n", error);
}
- error = mxt_initialize_t9_input_device(data);
- if (error)
- return error;
+ if (data->multitouch) {
+ error = mxt_initialize_input_device(data);
+ if (error)
+ return error;
+ } else {
+ dev_warn(dev, "No touch object detected\n");
+ }
dev_info(dev,
"Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
static void mxt_start(struct mxt_data *data)
{
/* Touch enable */
- mxt_write_object(data,
- MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83);
+ mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0x83);
}
static void mxt_stop(struct mxt_data *data)
{
/* Touch disable */
- mxt_write_object(data,
- MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0);
+ mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0);
}
static int mxt_input_open(struct input_dev *dev)
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