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Commit aed5d0ee authored by Simon Budig's avatar Simon Budig Committed by Dmitry Torokhov
Browse files

Input: edt-ft5x06 - implement support for the EDT-M12 series 



This adds support for the EDT M12 series of touchscreens.

Signed-off-by: default avatarSimon Budig <simon.budig@kernelconcepts.de>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 169110c3

drivers/input/touchscreen/edt-ft5x06.c

+39 −11
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ 
enum edt_ver {

	EDT_M06,

	EDT_M09,

	EDT_M12,

	GENERIC_FT,

};
@@ -188,6 +189,7 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) 
		break;



	case EDT_M09:

	case EDT_M12:

	case GENERIC_FT:

		cmd = 0x0;

		offset = 3;
@@ -211,7 +213,7 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) 
		goto out;

	}



	/* M09 does not send header or CRC */

	/* M09/M12 does not send header or CRC */

	if (tsdata->version == EDT_M06) {

		if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa ||

			rdbuf[2] != datalen) {
@@ -274,6 +276,7 @@ static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata, 
		return edt_ft5x06_ts_readwrite(tsdata->client, 4,

					wrbuf, 0, NULL);

	case EDT_M09:

	case EDT_M12:

	case GENERIC_FT:

		wrbuf[0] = addr;

		wrbuf[1] = value;
@@ -313,6 +316,7 @@ static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata, 
		break;



	case EDT_M09:

	case EDT_M12:

	case GENERIC_FT:

		wrbuf[0] = addr;

		error = edt_ft5x06_ts_readwrite(tsdata->client, 1,
@@ -377,6 +381,7 @@ static ssize_t edt_ft5x06_setting_show(struct device *dev, 
		break;



	case EDT_M09:

	case EDT_M12:

	case GENERIC_FT:

		addr = attr->addr_m09;

		break;
@@ -447,6 +452,7 @@ static ssize_t edt_ft5x06_setting_store(struct device *dev, 
		break;



	case EDT_M09:

	case EDT_M12:

	case GENERIC_FT:

		addr = attr->addr_m09;

		break;
@@ -472,14 +478,18 @@ static ssize_t edt_ft5x06_setting_store(struct device *dev, 
	return error ?: count;

}



/* m06, m09: range 0-31, m12: range 0-5 */

static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN,

		M09_REGISTER_GAIN, 0, 31);

/* m06, m09: range 0-31, m12: range 0-16 */

static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET,

		M09_REGISTER_OFFSET, 0, 31);

/* m06: range 20 to 80, m09: range 0 to 30, m12: range 1 to 255... */

static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD,

		M09_REGISTER_THRESHOLD, 0, 80);

		M09_REGISTER_THRESHOLD, 0, 255);

/* m06: range 3 to 14, m12: (0x64: 100Hz) */

static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE,

		NO_REGISTER, 3, 14);

		NO_REGISTER, 0, 255);



static struct attribute *edt_ft5x06_attrs[] = {

	&edt_ft5x06_attr_gain.dattr.attr,
@@ -551,7 +561,7 @@ static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata) 
	return error;



m09_out:

	dev_err(&client->dev, "No factory mode support for M09/GENERIC_FT\n");

	dev_err(&client->dev, "No factory mode support for M09/M12/GENERIC_FT\n");

	return -EINVAL;



}
@@ -776,15 +786,16 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client, 
	 * to have garbage in there

	 */

	memset(rdbuf, 0, sizeof(rdbuf));

	error = edt_ft5x06_ts_readwrite(client, 1, "\xbb",

	error = edt_ft5x06_ts_readwrite(client, 1, "\xBB",

					EDT_NAME_LEN - 1, rdbuf);

	if (error)

		return error;



	/* if we find something consistent, stay with that assumption

	 * at least M09 won't send 3 bytes here

	/* Probe content for something consistent.

	 * M06 starts with a response byte, M12 gives the data directly.

	 * M09/Generic does not provide model number information.

	 */

	if (!(strncasecmp(rdbuf + 1, "EP0", 3))) {

	if (!strncasecmp(rdbuf + 1, "EP0", 3)) {

		tsdata->version = EDT_M06;



		/* remove last '$' end marker */
@@ -798,8 +809,22 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client, 
			*p++ = '\0';

		strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN);

		strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);

	} else if (!strncasecmp(rdbuf, "EP0", 3)) {

		tsdata->version = EDT_M12;



		/* remove last '$' end marker */

		rdbuf[EDT_NAME_LEN - 2] = '\0';

		if (rdbuf[EDT_NAME_LEN - 3] == '$')

			rdbuf[EDT_NAME_LEN - 3] = '\0';



		/* look for Model/Version separator */

		p = strchr(rdbuf, '*');

		if (p)

			*p++ = '\0';

		strlcpy(model_name, rdbuf, EDT_NAME_LEN);

		strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);

	} else {

		/* If it is not an EDT M06 touchscreen, then the model

		/* If it is not an EDT M06/M12 touchscreen, then the model

		 * detection is a bit hairy. The different ft5x06

		 * firmares around don't reliably implement the

		 * identification registers. Well, we'll take a shot.
@@ -894,7 +919,8 @@ edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata) 
		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_M09 ||

	    tsdata->version == EDT_M12) {

		tsdata->num_x = edt_ft5x06_register_read(tsdata,

							 reg_addr->reg_num_x);

		tsdata->num_y = edt_ft5x06_register_read(tsdata,
@@ -921,6 +947,7 @@ edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata) 
		break;



	case EDT_M09:

	case EDT_M12:

		reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;

		reg_addr->reg_report_rate = NO_REGISTER;

		reg_addr->reg_gain = M09_REGISTER_GAIN;
@@ -1025,7 +1052,8 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, 
	input->dev.parent = &client->dev;



	if (tsdata->version == EDT_M06 ||

	    tsdata->version == EDT_M09) {

	    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,