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Input: edt-ft5x06 - consolidate handling of number of electrodes 

Instead of special-casing retrieval of number of X/Y electrodes based on
the firmware, let's select default values and mark registers as
non-existent on firmwares that do not support this operation.

Also mark "report rate" register as non-existent for generic firmwares
as having it set to 0 does not make sense.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Simon Budig <simon.budig@kernelconcepts.de>
Link: https://lore.kernel.org/r/X9FZFs3NZADoIhhH@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2020-12-10 21:44:00 -08:00
parent 7002932325
commit 03161a952c
1 changed files with 17 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/input/touchscreen/edt-ft5x06.c
View File

@ -69,6 +69,9 @@
#define EDT_RAW_DATA_RETRIES 100
#define EDT_RAW_DATA_DELAY 1000 /* usec */
#define EDT_DEFAULT_NUM_X 1024
#define EDT_DEFAULT_NUM_Y 1024
enum edt_pmode {
EDT_PMODE_NOT_SUPPORTED,
EDT_PMODE_HIBERNATE,
@ -977,8 +980,7 @@ static void edt_ft5x06_ts_get_defaults(struct device *dev,
}
}
static void
edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
static void edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
{
struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
@ -997,21 +999,17 @@ edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
if (reg_addr->reg_report_rate != NO_REGISTER)
tsdata->report_rate = edt_ft5x06_register_read(tsdata,
reg_addr->reg_report_rate);
if (tsdata->version == EDT_M06 ||
tsdata->version == EDT_M09 ||
tsdata->version == EDT_M12) {
tsdata->num_x = EDT_DEFAULT_NUM_X;
if (reg_addr->reg_num_x != NO_REGISTER)
tsdata->num_x = edt_ft5x06_register_read(tsdata,
reg_addr->reg_num_x);
tsdata->num_y = EDT_DEFAULT_NUM_Y;
if (reg_addr->reg_num_y != NO_REGISTER)
tsdata->num_y = edt_ft5x06_register_read(tsdata,
reg_addr->reg_num_y);
} else {
tsdata->num_x = -1;
tsdata->num_y = -1;
}
}
static void
edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
static void edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
{
struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
@ -1041,22 +1039,25 @@ edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
case EV_FT:
reg_addr->reg_threshold = EV_REGISTER_THRESHOLD;
reg_addr->reg_report_rate = NO_REGISTER;
reg_addr->reg_gain = EV_REGISTER_GAIN;
reg_addr->reg_offset = NO_REGISTER;
reg_addr->reg_offset_x = EV_REGISTER_OFFSET_X;
reg_addr->reg_offset_y = EV_REGISTER_OFFSET_Y;
reg_addr->reg_num_x = NO_REGISTER;
reg_addr->reg_num_y = NO_REGISTER;
reg_addr->reg_report_rate = NO_REGISTER;
break;
case GENERIC_FT:
/* this is a guesswork */
reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;
reg_addr->reg_report_rate = NO_REGISTER;
reg_addr->reg_gain = M09_REGISTER_GAIN;
reg_addr->reg_offset = M09_REGISTER_OFFSET;
reg_addr->reg_offset_x = NO_REGISTER;
reg_addr->reg_offset_y = NO_REGISTER;
reg_addr->reg_num_x = NO_REGISTER;
reg_addr->reg_num_y = NO_REGISTER;
break;
}
}
@ -1195,20 +1196,10 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
input->id.bustype = BUS_I2C;
input->dev.parent = &client->dev;
if (tsdata->version == EDT_M06 ||
tsdata->version == EDT_M09 ||
tsdata->version == EDT_M12) {
input_set_abs_params(input, ABS_MT_POSITION_X,
0, tsdata->num_x * 64 - 1, 0, 0);
input_set_abs_params(input, ABS_MT_POSITION_Y,
0, tsdata->num_y * 64 - 1, 0, 0);
} else {
/* Unknown maximum values. Specify via devicetree */
input_set_abs_params(input, ABS_MT_POSITION_X,
0, 65535, 0, 0);
input_set_abs_params(input, ABS_MT_POSITION_Y,
0, 65535, 0, 0);
}
input_set_abs_params(input, ABS_MT_POSITION_X,
0, tsdata->num_x * 64 - 1, 0, 0);
input_set_abs_params(input, ABS_MT_POSITION_Y,
0, tsdata->num_y * 64 - 1, 0, 0);
touchscreen_parse_properties(input, true, &tsdata->prop);