Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:
 "An update to the Goodix touchscreen driver to enable it work properly
  on various Bay Trail and Cherry Trail devices, and a few other
  assorted changes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (26 commits)
  Input: update SPDX tag for input-event-codes.h
  Input: i8042 - add Acer Aspire 5738z to nomux list
  Input: goodix - fix compilation when ACPI support is disabled
  dt-bindings: touchscreen: Convert edt-ft5x06 to json-schema
  Input: of_touchscreen - explicitly choose axis
  Input: goodix - support gt9147 touchpanel
  dt-bindings: touchscreen: goodix: support of gt9147
  Input: goodix - add support for Goodix GT917S
  Input: goodix - use string-based chip ID
  dt-bindings: input: touchscreen: add compatible string for Goodix GT917S
  Input: goodix - add support for more then one touch-key
  Input: goodix - fix spurious key release events
  Input: goodix - try to reset the controller if the i2c-test fails
  Input: goodix - restore config on resume if necessary
  Input: goodix - make goodix_send_cfg() take a raw buffer as argument
  Input: goodix - add minimum firmware size check
  Input: goodix - save a copy of the config from goodix_read_config()
  Input: goodix - move defines to above struct goodix_ts_data declaration
  Input: goodix - add support for controlling the IRQ pin through ACPI methods
  Input: goodix - add support for getting IRQ + reset GPIOs on Bay Trail devices
  ...

4 files changed, 523 insertions, 132 deletions

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index dc974c288e88..08e919dbeb5d 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -530,6 +530,17 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo LaVie Z"),
 		},
 	},
+	{
+		/*
+		 * Acer Aspire 5738z
+		 * Touchpad stops working in mux mode when dis- + re-enabled
+		 * with the touchpad enable/disable toggle hotkey
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
+		},
+	},
 	{ }
 };
 
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index 491179967b29..14c577c16b16 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -1309,6 +1309,7 @@ static int elants_i2c_probe(struct i2c_client *client,
 	input_set_abs_params(ts->input, ABS_MT_PRESSURE, 0, 255, 0, 0);
 	input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res);
 	input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res);
+	input_abs_set_res(ts->input, ABS_MT_TOUCH_MAJOR, 1);
 
 	error = input_register_device(ts->input);
 	if (error) {
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index 0403102e807e..02c75ea385e0 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -29,33 +29,6 @@
 #include <linux/of.h>
 #include <asm/unaligned.h>
 
-struct goodix_ts_data;
-
-struct goodix_chip_data {
-	u16 config_addr;
-	int config_len;
-	int (*check_config)(struct goodix_ts_data *, const struct firmware *);
-};
-
-struct goodix_ts_data {
-	struct i2c_client *client;
-	struct input_dev *input_dev;
-	const struct goodix_chip_data *chip;
-	struct touchscreen_properties prop;
-	unsigned int max_touch_num;
-	unsigned int int_trigger_type;
-	struct regulator *avdd28;
-	struct regulator *vddio;
-	struct gpio_desc *gpiod_int;
-	struct gpio_desc *gpiod_rst;
-	u16 id;
-	u16 version;
-	const char *cfg_name;
-	struct completion firmware_loading_complete;
-	unsigned long irq_flags;
-	unsigned int contact_size;
-};
-
 #define GOODIX_GPIO_INT_NAME		"irq"
 #define GOODIX_GPIO_RST_NAME		"reset"
 
@@ -65,10 +38,13 @@ struct goodix_ts_data {
 #define GOODIX_CONTACT_SIZE		8
 #define GOODIX_MAX_CONTACT_SIZE		9
 #define GOODIX_MAX_CONTACTS		10
+#define GOODIX_MAX_KEYS			7
 
-#define GOODIX_CONFIG_MAX_LENGTH	240
+#define GOODIX_CONFIG_MIN_LENGTH	186
 #define GOODIX_CONFIG_911_LENGTH	186
 #define GOODIX_CONFIG_967_LENGTH	228
+#define GOODIX_CONFIG_GT9X_LENGTH	240
+#define GOODIX_CONFIG_MAX_LENGTH	240
 
 /* Register defines */
 #define GOODIX_REG_COMMAND		0x8040
@@ -80,39 +56,118 @@ struct goodix_ts_data {
 #define GOODIX_REG_ID			0x8140
 
 #define GOODIX_BUFFER_STATUS_READY	BIT(7)
+#define GOODIX_HAVE_KEY			BIT(4)
 #define GOODIX_BUFFER_STATUS_TIMEOUT	20
 
 #define RESOLUTION_LOC		1
 #define MAX_CONTACTS_LOC	5
 #define TRIGGER_LOC		6
 
+/* Our special handling for GPIO accesses through ACPI is x86 specific */
+#if defined CONFIG_X86 && defined CONFIG_ACPI
+#define ACPI_GPIO_SUPPORT
+#endif
+
+struct goodix_ts_data;
+
+enum goodix_irq_pin_access_method {
+	IRQ_PIN_ACCESS_NONE,
+	IRQ_PIN_ACCESS_GPIO,
+	IRQ_PIN_ACCESS_ACPI_GPIO,
+	IRQ_PIN_ACCESS_ACPI_METHOD,
+};
+
+struct goodix_chip_data {
+	u16 config_addr;
+	int config_len;
+	int (*check_config)(struct goodix_ts_data *ts, const u8 *cfg, int len);
+	void (*calc_config_checksum)(struct goodix_ts_data *ts);
+};
+
+struct goodix_chip_id {
+	const char *id;
+	const struct goodix_chip_data *data;
+};
+
+#define GOODIX_ID_MAX_LEN	4
+
+struct goodix_ts_data {
+	struct i2c_client *client;
+	struct input_dev *input_dev;
+	const struct goodix_chip_data *chip;
+	struct touchscreen_properties prop;
+	unsigned int max_touch_num;
+	unsigned int int_trigger_type;
+	struct regulator *avdd28;
+	struct regulator *vddio;
+	struct gpio_desc *gpiod_int;
+	struct gpio_desc *gpiod_rst;
+	int gpio_count;
+	int gpio_int_idx;
+	char id[GOODIX_ID_MAX_LEN + 1];
+	u16 version;
+	const char *cfg_name;
+	bool reset_controller_at_probe;
+	bool load_cfg_from_disk;
+	struct completion firmware_loading_complete;
+	unsigned long irq_flags;
+	enum goodix_irq_pin_access_method irq_pin_access_method;
+	unsigned int contact_size;
+	u8 config[GOODIX_CONFIG_MAX_LENGTH];
+	unsigned short keymap[GOODIX_MAX_KEYS];
+};
+
 static int goodix_check_cfg_8(struct goodix_ts_data *ts,
-			const struct firmware *cfg);
+			      const u8 *cfg, int len);
 static int goodix_check_cfg_16(struct goodix_ts_data *ts,
-			const struct firmware *cfg);
+			       const u8 *cfg, int len);
+static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts);
+static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts);
 
 static const struct goodix_chip_data gt1x_chip_data = {
 	.config_addr		= GOODIX_GT1X_REG_CONFIG_DATA,
-	.config_len		= GOODIX_CONFIG_MAX_LENGTH,
+	.config_len		= GOODIX_CONFIG_GT9X_LENGTH,
 	.check_config		= goodix_check_cfg_16,
+	.calc_config_checksum	= goodix_calc_cfg_checksum_16,
 };
 
 static const struct goodix_chip_data gt911_chip_data = {
 	.config_addr		= GOODIX_GT9X_REG_CONFIG_DATA,
 	.config_len		= GOODIX_CONFIG_911_LENGTH,
 	.check_config		= goodix_check_cfg_8,
+	.calc_config_checksum	= goodix_calc_cfg_checksum_8,
 };
 
 static const struct goodix_chip_data gt967_chip_data = {
 	.config_addr		= GOODIX_GT9X_REG_CONFIG_DATA,
 	.config_len		= GOODIX_CONFIG_967_LENGTH,
 	.check_config		= goodix_check_cfg_8,
+	.calc_config_checksum	= goodix_calc_cfg_checksum_8,
 };
 
 static const struct goodix_chip_data gt9x_chip_data = {
 	.config_addr		= GOODIX_GT9X_REG_CONFIG_DATA,
-	.config_len		= GOODIX_CONFIG_MAX_LENGTH,
+	.config_len		= GOODIX_CONFIG_GT9X_LENGTH,
 	.check_config		= goodix_check_cfg_8,
+	.calc_config_checksum	= goodix_calc_cfg_checksum_8,
+};
+
+static const struct goodix_chip_id goodix_chip_ids[] = {
+	{ .id = "1151", .data = &gt1x_chip_data },
+	{ .id = "5663", .data = &gt1x_chip_data },
+	{ .id = "5688", .data = &gt1x_chip_data },
+	{ .id = "917S", .data = &gt1x_chip_data },
+
+	{ .id = "911", .data = &gt911_chip_data },
+	{ .id = "9271", .data = &gt911_chip_data },
+	{ .id = "9110", .data = &gt911_chip_data },
+	{ .id = "927", .data = &gt911_chip_data },
+	{ .id = "928", .data = &gt911_chip_data },
+
+	{ .id = "912", .data = &gt967_chip_data },
+	{ .id = "9147", .data = &gt967_chip_data },
+	{ .id = "967", .data = &gt967_chip_data },
+	{ }
 };
 
 static const unsigned long goodix_irq_flags[] = {
@@ -168,6 +223,22 @@ static const struct dmi_system_id nine_bytes_report[] = {
 	{}
 };
 
+/*
+ * Those tablets have their x coordinate inverted
+ */
+static const struct dmi_system_id inverted_x_screen[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+	{
+		.ident = "Cube I15-TC",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Cube"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC")
+		},
+	},
+#endif
+	{}
+};
+
 /**
  * goodix_i2c_read - read data from a register of the i2c slave device.
  *
@@ -235,28 +306,16 @@ static int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value)
 	return goodix_i2c_write(client, reg, &value, sizeof(value));
 }
 
-static const struct goodix_chip_data *goodix_get_chip_data(u16 id)
+static const struct goodix_chip_data *goodix_get_chip_data(const char *id)
 {
-	switch (id) {
-	case 1151:
-	case 5663:
-	case 5688:
-		return &gt1x_chip_data;
-
-	case 911:
-	case 9271:
-	case 9110:
-	case 927:
-	case 928:
-		return &gt911_chip_data;
-
-	case 912:
-	case 967:
-		return &gt967_chip_data;
+	unsigned int i;
 
-	default:
-		return &gt9x_chip_data;
+	for (i = 0; goodix_chip_ids[i].id; i++) {
+		if (!strcmp(goodix_chip_ids[i].id, id))
+			return goodix_chip_ids[i].data;
 	}
+
+	return &gt9x_chip_data;
 }
 
 static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
@@ -264,6 +323,13 @@ static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
 	unsigned long max_timeout;
 	int touch_num;
 	int error;
+	u16 addr = GOODIX_READ_COOR_ADDR;
+	/*
+	 * We are going to read 1-byte header,
+	 * ts->contact_size * max(1, touch_num) bytes of coordinates
+	 * and 1-byte footer which contains the touch-key code.
+	 */
+	const int header_contact_keycode_size = 1 + ts->contact_size + 1;
 
 	/*
 	 * The 'buffer status' bit, which indicates that the data is valid, is
@@ -272,8 +338,8 @@ static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
 	 */
 	max_timeout = jiffies + msecs_to_jiffies(GOODIX_BUFFER_STATUS_TIMEOUT);
 	do {
-		error = goodix_i2c_read(ts->client, GOODIX_READ_COOR_ADDR,
-					data, ts->contact_size + 1);
+		error = goodix_i2c_read(ts->client, addr, data,
+					header_contact_keycode_size);
 		if (error) {
 			dev_err(&ts->client->dev, "I2C transfer error: %d\n",
 					error);
@@ -286,11 +352,10 @@ static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
 				return -EPROTO;
 
 			if (touch_num > 1) {
-				data += 1 + ts->contact_size;
+				addr += header_contact_keycode_size;
+				data += header_contact_keycode_size;
 				error = goodix_i2c_read(ts->client,
-						GOODIX_READ_COOR_ADDR +
-							1 + ts->contact_size,
-						data,
+						addr, data,
 						ts->contact_size *
 							(touch_num - 1));
 				if (error)
@@ -307,7 +372,7 @@ static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
 	 * The Goodix panel will send spurious interrupts after a
 	 * 'finger up' event, which will always cause a timeout.
 	 */
-	return 0;
+	return -ENOMSG;
 }
 
 static void goodix_ts_report_touch_8b(struct goodix_ts_data *ts, u8 *coor_data)
@@ -340,6 +405,25 @@ static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data)
 	input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
 }
 
+static void goodix_ts_report_key(struct goodix_ts_data *ts, u8 *data)
+{
+	int touch_num;
+	u8 key_value;
+	int i;
+
+	if (data[0] & GOODIX_HAVE_KEY) {
+		touch_num = data[0] & 0x0f;
+		key_value = data[1 + ts->contact_size * touch_num];
+		for (i = 0; i < GOODIX_MAX_KEYS; i++)
+			if (key_value & BIT(i))
+				input_report_key(ts->input_dev,
+						 ts->keymap[i], 1);
+	} else {
+		for (i = 0; i < GOODIX_MAX_KEYS; i++)
+			input_report_key(ts->input_dev, ts->keymap[i], 0);
+	}
+}
+
 /**
  * goodix_process_events - Process incoming events
  *
@@ -350,7 +434,7 @@ static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data)
  */
 static void goodix_process_events(struct goodix_ts_data *ts)
 {
-	u8  point_data[1 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
+	u8  point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
 	int touch_num;
 	int i;
 
@@ -358,11 +442,7 @@ static void goodix_process_events(struct goodix_ts_data *ts)
 	if (touch_num < 0)
 		return;
 
-	/*
-	 * Bit 4 of the first byte reports the status of the capacitive
-	 * Windows/Home button.
-	 */
-	input_report_key(ts->input_dev, KEY_LEFTMETA, point_data[0] & BIT(4));
+	goodix_ts_report_key(ts, point_data);
 
 	for (i = 0; i < touch_num; i++)
 		if (ts->contact_size == 9)
@@ -406,22 +486,21 @@ static int goodix_request_irq(struct goodix_ts_data *ts)
 					 ts->irq_flags, ts->client->name, ts);
 }
 
-static int goodix_check_cfg_8(struct goodix_ts_data *ts,
-			const struct firmware *cfg)
+static int goodix_check_cfg_8(struct goodix_ts_data *ts, const u8 *cfg, int len)
 {
-	int i, raw_cfg_len = cfg->size - 2;
+	int i, raw_cfg_len = len - 2;
 	u8 check_sum = 0;
 
 	for (i = 0; i < raw_cfg_len; i++)
-		check_sum += cfg->data[i];
+		check_sum += cfg[i];
 	check_sum = (~check_sum) + 1;
-	if (check_sum != cfg->data[raw_cfg_len]) {
+	if (check_sum != cfg[raw_cfg_len]) {
 		dev_err(&ts->client->dev,
 			"The checksum of the config fw is not correct");
 		return -EINVAL;
 	}
 
-	if (cfg->data[raw_cfg_len + 1] != 1) {
+	if (cfg[raw_cfg_len + 1] != 1) {
 		dev_err(&ts->client->dev,
 			"Config fw must have Config_Fresh register set");
 		return -EINVAL;
@@ -430,22 +509,35 @@ static int goodix_check_cfg_8(struct goodix_ts_data *ts,
 	return 0;
 }
 
-static int goodix_check_cfg_16(struct goodix_ts_data *ts,
-			const struct firmware *cfg)
+static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts)
 {
-	int i, raw_cfg_len = cfg->size - 3;
+	int i, raw_cfg_len = ts->chip->config_len - 2;
+	u8 check_sum = 0;
+
+	for (i = 0; i < raw_cfg_len; i++)
+		check_sum += ts->config[i];
+	check_sum = (~check_sum) + 1;
+
+	ts->config[raw_cfg_len] = check_sum;
+	ts->config[raw_cfg_len + 1] = 1; /* Set "config_fresh" bit */
+}
+
+static int goodix_check_cfg_16(struct goodix_ts_data *ts, const u8 *cfg,
+			       int len)
+{
+	int i, raw_cfg_len = len - 3;
 	u16 check_sum = 0;
 
 	for (i = 0; i < raw_cfg_len; i += 2)
-		check_sum += get_unaligned_be16(&cfg->data[i]);
+		check_sum += get_unaligned_be16(&cfg[i]);
 	check_sum = (~check_sum) + 1;
-	if (check_sum != get_unaligned_be16(&cfg->data[raw_cfg_len])) {
+	if (check_sum != get_unaligned_be16(&cfg[raw_cfg_len])) {
 		dev_err(&ts->client->dev,
 			"The checksum of the config fw is not correct");
 		return -EINVAL;
 	}
 
-	if (cfg->data[raw_cfg_len + 2] != 1) {
+	if (cfg[raw_cfg_len + 2] != 1) {
 		dev_err(&ts->client->dev,
 			"Config fw must have Config_Fresh register set");
 		return -EINVAL;
@@ -454,22 +546,35 @@ static int goodix_check_cfg_16(struct goodix_ts_data *ts,
 	return 0;
 }
 
+static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts)
+{
+	int i, raw_cfg_len = ts->chip->config_len - 3;
+	u16 check_sum = 0;
+
+	for (i = 0; i < raw_cfg_len; i += 2)
+		check_sum += get_unaligned_be16(&ts->config[i]);
+	check_sum = (~check_sum) + 1;
+
+	put_unaligned_be16(check_sum, &ts->config[raw_cfg_len]);
+	ts->config[raw_cfg_len + 2] = 1; /* Set "config_fresh" bit */
+}
+
 /**
  * goodix_check_cfg - Checks if config fw is valid
  *
  * @ts: goodix_ts_data pointer
  * @cfg: firmware config data
  */
-static int goodix_check_cfg(struct goodix_ts_data *ts,
-			    const struct firmware *cfg)
+static int goodix_check_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
 {
-	if (cfg->size > GOODIX_CONFIG_MAX_LENGTH) {
+	if (len < GOODIX_CONFIG_MIN_LENGTH ||
+	    len > GOODIX_CONFIG_MAX_LENGTH) {
 		dev_err(&ts->client->dev,
 			"The length of the config fw is not correct");
 		return -EINVAL;
 	}
 
-	return ts->chip->check_config(ts, cfg);
+	return ts->chip->check_config(ts, cfg, len);
 }
 
 /**
@@ -478,17 +583,15 @@ static int goodix_check_cfg(struct goodix_ts_data *ts,
  * @ts: goodix_ts_data pointer
  * @cfg: config firmware to write to device
  */
-static int goodix_send_cfg(struct goodix_ts_data *ts,
-			   const struct firmware *cfg)
+static int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
 {
 	int error;
 
-	error = goodix_check_cfg(ts, cfg);
+	error = goodix_check_cfg(ts, cfg, len);
 	if (error)
 		return error;
 
-	error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg->data,
-				 cfg->size);
+	error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg, len);
 	if (error) {
 		dev_err(&ts->client->dev, "Failed to write config data: %d",
 			error);
@@ -502,17 +605,93 @@ static int goodix_send_cfg(struct goodix_ts_data *ts,
 	return 0;
 }
 
+#ifdef ACPI_GPIO_SUPPORT
+static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
+{
+	acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
+	acpi_status status;
+
+	status = acpi_evaluate_object(handle, "INTI", NULL, NULL);
+	return ACPI_SUCCESS(status) ? 0 : -EIO;
+}
+
+static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
+{
+	acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
+	acpi_status status;
+
+	status = acpi_execute_simple_method(handle, "INTO", value);
+	return ACPI_SUCCESS(status) ? 0 : -EIO;
+}
+#else
+static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
+{
+	dev_err(&ts->client->dev,
+		"%s called on device without ACPI support\n", __func__);
+	return -EINVAL;
+}
+
+static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
+{
+	dev_err(&ts->client->dev,
+		"%s called on device without ACPI support\n", __func__);
+	return -EINVAL;
+}
+#endif
+
+static int goodix_irq_direction_output(struct goodix_ts_data *ts, int value)
+{
+	switch (ts->irq_pin_access_method) {
+	case IRQ_PIN_ACCESS_NONE:
+		dev_err(&ts->client->dev,
+			"%s called without an irq_pin_access_method set\n",
+			__func__);
+		return -EINVAL;
+	case IRQ_PIN_ACCESS_GPIO:
+		return gpiod_direction_output(ts->gpiod_int, value);
+	case IRQ_PIN_ACCESS_ACPI_GPIO:
+		/*
+		 * The IRQ pin triggers on a falling edge, so its gets marked
+		 * as active-low, use output_raw to avoid the value inversion.
+		 */
+		return gpiod_direction_output_raw(ts->gpiod_int, value);
+	case IRQ_PIN_ACCESS_ACPI_METHOD:
+		return goodix_pin_acpi_output_method(ts, value);
+	}
+
+	return -EINVAL; /* Never reached */
+}
+
+static int goodix_irq_direction_input(struct goodix_ts_data *ts)
+{
+	switch (ts->irq_pin_access_method) {
+	case IRQ_PIN_ACCESS_NONE:
+		dev_err(&ts->client->dev,
+			"%s called without an irq_pin_access_method set\n",
+			__func__);
+		return -EINVAL;
+	case IRQ_PIN_ACCESS_GPIO:
+		return gpiod_direction_input(ts->gpiod_int);
+	case IRQ_PIN_ACCESS_ACPI_GPIO:
+		return gpiod_direction_input(ts->gpiod_int);
+	case IRQ_PIN_ACCESS_ACPI_METHOD:
+		return goodix_pin_acpi_direction_input(ts);
+	}
+
+	return -EINVAL; /* Never reached */
+}
+
 static int goodix_int_sync(struct goodix_ts_data *ts)
 {
 	int error;
 
-	error = gpiod_direction_output(ts->gpiod_int, 0);
+	error = goodix_irq_direction_output(ts, 0);
 	if (error)
 		return error;
 
 	msleep(50);				/* T5: 50ms */
 
-	error = gpiod_direction_input(ts->gpiod_int);
+	error = goodix_irq_direction_input(ts);
 	if (error)
 		return error;
 
@@ -536,7 +715,7 @@ static int goodix_reset(struct goodix_ts_data *ts)
 	msleep(20);				/* T2: > 10ms */
 
 	/* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */
-	error = gpiod_direction_output(ts->gpiod_int, ts->client->addr == 0x14);
+	error = goodix_irq_direction_output(ts, ts->client->addr == 0x14);
 	if (error)
 		return error;
 
@@ -560,6 +739,124 @@ static int goodix_reset(struct goodix_ts_data *ts)
 	return 0;
 }
 
+#ifdef ACPI_GPIO_SUPPORT
+#include <asm/cpu_device_id.h>
+#include <asm/intel-family.h>
+
+static const struct x86_cpu_id baytrail_cpu_ids[] = {
+	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT, X86_FEATURE_ANY, },
+	{}
+};
+
+static inline bool is_byt(void)
+{
+	const struct x86_cpu_id *id = x86_match_cpu(baytrail_cpu_ids);
+
+	return !!id;
+}
+
+static const struct acpi_gpio_params first_gpio = { 0, 0, false };
+static const struct acpi_gpio_params second_gpio = { 1, 0, false };
+
+static const struct acpi_gpio_mapping acpi_goodix_int_first_gpios[] = {
+	{ GOODIX_GPIO_INT_NAME "-gpios", &first_gpio, 1 },
+	{ GOODIX_GPIO_RST_NAME "-gpios", &second_gpio, 1 },
+	{ },
+};
+
+static const struct acpi_gpio_mapping acpi_goodix_int_last_gpios[] = {
+	{ GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
+	{ GOODIX_GPIO_INT_NAME "-gpios", &second_gpio, 1 },
+	{ },
+};
+
+static const struct acpi_gpio_mapping acpi_goodix_reset_only_gpios[] = {
+	{ GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
+	{ },
+};
+
+static int goodix_resource(struct acpi_resource *ares, void *data)
+{
+	struct goodix_ts_data *ts = data;
+	struct device *dev = &ts->client->dev;
+	struct acpi_resource_gpio *gpio;
+
+	switch (ares->type) {
+	case ACPI_RESOURCE_TYPE_GPIO:
+		gpio = &ares->data.gpio;
+		if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) {
+			if (ts->gpio_int_idx == -1) {
+				ts->gpio_int_idx = ts->gpio_count;
+			} else {
+				dev_err(dev, "More then one GpioInt resource, ignoring ACPI GPIO resources\n");
+				ts->gpio_int_idx = -2;
+			}
+		}
+		ts->gpio_count++;
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+/*
+ * This function gets called in case we fail to get the irq GPIO directly
+ * because the ACPI tables lack GPIO-name to APCI _CRS index mappings
+ * (no _DSD UUID daffd814-6eba-4d8c-8a91-bc9bbf4aa301 data).
+ * In that case we add our own mapping and then goodix_get_gpio_config()
+ * retries to get the GPIOs based on the added mapping.
+ */
+static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
+{
+	const struct acpi_gpio_mapping *gpio_mapping = NULL;
+	struct device *dev = &ts->client->dev;
+	LIST_HEAD(resources);
+	int ret;
+
+	ts->gpio_count = 0;
+	ts->gpio_int_idx = -1;
+	ret = acpi_dev_get_resources(ACPI_COMPANION(dev), &resources,
+				     goodix_resource, ts);
+	if (ret < 0) {
+		dev_err(dev, "Error getting ACPI resources: %d\n", ret);
+		return ret;
+	}
+
+	acpi_dev_free_resource_list(&resources);
+
+	if (ts->gpio_count == 2 && ts->gpio_int_idx == 0) {
+		ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
+		gpio_mapping = acpi_goodix_int_first_gpios;
+	} else if (ts->gpio_count == 2 && ts->gpio_int_idx == 1) {
+		ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
+		gpio_mapping = acpi_goodix_int_last_gpios;
+	} else if (ts->gpio_count == 1 && ts->gpio_int_idx == -1 &&
+		   acpi_has_method(ACPI_HANDLE(dev), "INTI") &&
+		   acpi_has_method(ACPI_HANDLE(dev), "INTO")) {
+		dev_info(dev, "Using ACPI INTI and INTO methods for IRQ pin access\n");
+		ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_METHOD;
+		gpio_mapping = acpi_goodix_reset_only_gpios;
+	} else if (is_byt() && ts->gpio_count == 2 && ts->gpio_int_idx == -1) {
+		dev_info(dev, "No ACPI GpioInt resource, assuming that the GPIO order is reset, int\n");
+		ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
+		gpio_mapping = acpi_goodix_int_last_gpios;
+	} else {
+		dev_warn(dev, "Unexpected ACPI resources: gpio_count %d, gpio_int_idx %d\n",
+			 ts->gpio_count, ts->gpio_int_idx);
+		return -EINVAL;
+	}
+
+	return devm_acpi_dev_add_driver_gpios(dev, gpio_mapping);
+}
+#else
+static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
+{
+	return -EINVAL;
+}
+#endif /* CONFIG_X86 && CONFIG_ACPI */
+
 /**
  * goodix_get_gpio_config - Get GPIO config from ACPI/DT
  *
@@ -570,6 +867,7 @@ static int goodix_get_gpio_config(struct goodix_ts_data *ts)
 	int error;
 	struct device *dev;
 	struct gpio_desc *gpiod;
+	bool added_acpi_mappings = false;
 
 	if (!ts->client)
 		return -EINVAL;
@@ -593,6 +891,7 @@ static int goodix_get_gpio_config(struct goodix_ts_data *ts)
 		return error;
 	}
 
+retry_get_irq_gpio:
 	/* Get the interrupt GPIO pin number */
 	gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN);
 	if (IS_ERR(gpiod)) {
@@ -602,6 +901,11 @@ static int goodix_get_gpio_config(struct goodix_ts_data *ts)
 				GOODIX_GPIO_INT_NAME, error);
 		return error;
 	}
+	if (!gpiod && has_acpi_companion(dev) && !added_acpi_mappings) {
+		added_acpi_mappings = true;
+		if (goodix_add_acpi_gpio_mappings(ts) == 0)
+			goto retry_get_irq_gpio;
+	}
 
 	ts->gpiod_int = gpiod;
 
@@ -617,6 +921,31 @@ static int goodix_get_gpio_config(struct goodix_ts_data *ts)
 
 	ts->gpiod_rst = gpiod;
 
+	switch (ts->irq_pin_access_method) {
+	case IRQ_PIN_ACCESS_ACPI_GPIO:
+		/*
+		 * We end up here if goodix_add_acpi_gpio_mappings() has
+		 * called devm_acpi_dev_add_driver_gpios() because the ACPI
+		 * tables did not contain name to index mappings.
+		 * Check that we successfully got both GPIOs after we've
+		 * added our own acpi_gpio_mapping and if we did not get both
+		 * GPIOs reset irq_pin_access_method to IRQ_PIN_ACCESS_NONE.
+		 */
+		if (!ts->gpiod_int || !ts->gpiod_rst)
+			ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
+		break;
+	case IRQ_PIN_ACCESS_ACPI_METHOD:
+		if (!ts->gpiod_rst)
+			ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
+		break;
+	default:
+		if (ts->gpiod_int && ts->gpiod_rst) {
+			ts->reset_controller_at_probe = true;
+			ts->load_cfg_from_disk = true;
+			ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO;
+		}
+	}
+
 	return 0;
 }
 
@@ -629,12 +958,11 @@ static int goodix_get_gpio_config(struct goodix_ts_data *ts)
  */
 static void goodix_read_config(struct goodix_ts_data *ts)
 {
-	u8 config[GOODIX_CONFIG_MAX_LENGTH];
 	int x_max, y_max;
 	int error;
 
 	error = goodix_i2c_read(ts->client, ts->chip->config_addr,
-				config, ts->chip->config_len);
+				ts->config, ts->chip->config_len);
 	if (error) {
 		dev_warn(&ts->client->dev, "Error reading config: %d\n",
 			 error);
@@ -643,15 +971,17 @@ static void goodix_read_config(struct goodix_ts_data *ts)
 		return;
 	}
 
-	ts->int_trigger_type = config[TRIGGER_LOC] & 0x03;
-	ts->max_touch_num = config[MAX_CONTACTS_LOC] & 0x0f;
+	ts->int_trigger_type = ts->config[TRIGGER_LOC] & 0x03;
+	ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f;
 
-	x_max = get_unaligned_le16(&config[RESOLUTION_LOC]);
-	y_max = get_unaligned_le16(&config[RESOLUTION_LOC + 2]);
+	x_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC]);
+	y_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC + 2]);
 	if (x_max && y_max) {
 		input_abs_set_max(ts->input_dev, ABS_MT_POSITION_X, x_max - 1);
 		input_abs_set_max(ts->input_dev, ABS_MT_POSITION_Y, y_max - 1);
 	}
+
+	ts->chip->calc_config_checksum(ts);
 }
 
 /**
@@ -663,7 +993,7 @@ static int goodix_read_version(struct goodix_ts_data *ts)
 {
 	int error;
 	u8 buf[6];
-	char id_str[5];
+	char id_str[GOODIX_ID_MAX_LEN + 1];
 
 	error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf));
 	if (error) {
@@ -671,14 +1001,13 @@ static int goodix_read_version(struct goodix_ts_data *ts)
 		return error;
 	}
 
-	memcpy(id_str, buf, 4);
-	id_str[4] = 0;
-	if (kstrtou16(id_str, 10, &ts->id))
-		ts->id = 0x1001;
+	memcpy(id_str, buf, GOODIX_ID_MAX_LEN);
+	id_str[GOODIX_ID_MAX_LEN] = 0;
+	strscpy(ts->id, id_str, GOODIX_ID_MAX_LEN + 1);
 
 	ts->version = get_unaligned_le16(&buf[4]);
 
-	dev_info(&ts->client->dev, "ID %d, version: %04x\n", ts->id,
+	dev_info(&ts->client->dev, "ID %s, version: %04x\n", ts->id,
 		 ts->version);
 
 	return 0;
@@ -722,6 +1051,7 @@ static int goodix_i2c_test(struct i2c_client *client)
 static int goodix_configure_dev(struct goodix_ts_data *ts)
 {
 	int error;
+	int i;
 
 	ts->int_trigger_type = GOODIX_INT_TRIGGER;
 	ts->max_touch_num = GOODIX_MAX_CONTACTS;
@@ -736,11 +1066,23 @@ static int goodix_configure_dev(struct goodix_ts_data *ts)
 	ts->input_dev->phys = "input/ts";
 	ts->input_dev->id.bustype = BUS_I2C;
 	ts->input_dev->id.vendor = 0x0416;
-	ts->input_dev->id.product = ts->id;
+	if (kstrtou16(ts->id, 10, &ts->input_dev->id.product))
+		ts->input_dev->id.product = 0x1001;
 	ts->input_dev->id.version = ts->version;
 
+	ts->input_dev->keycode = ts->keymap;
+	ts->input_dev->keycodesize = sizeof(ts->keymap[0]);
+	ts->input_dev->keycodemax = GOODIX_MAX_KEYS;
+
 	/* Capacitive Windows/Home button on some devices */
-	input_set_capability(ts->input_dev, EV_KEY, KEY_LEFTMETA);
+	for (i = 0; i < GOODIX_MAX_KEYS; ++i) {
+		if (i == 0)
+			ts->keymap[i] = KEY_LEFTMETA;
+		else
+			ts->keymap[i] = KEY_F1 + (i - 1);
+
+		input_set_capability(ts->input_dev, EV_KEY, ts->keymap[i]);
+	}
 
 	input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X);
 	input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y);
@@ -780,6 +1122,12 @@ static int goodix_configure_dev(struct goodix_ts_data *ts)
 			"Non-standard 9-bytes report format quirk\n");
 	}
 
+	if (dmi_check_system(inverted_x_screen)) {
+		ts->prop.invert_x = true;
+		dev_dbg(&ts->client->dev,
+			"Applying 'inverted x screen' quirk\n");
+	}
+
 	error = input_mt_init_slots(ts->input_dev, ts->max_touch_num,
 				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
 	if (error) {
@@ -820,7 +1168,7 @@ static void goodix_config_cb(const struct firmware *cfg, void *ctx)
 
 	if (cfg) {
 		/* send device configuration to the firmware */
-		error = goodix_send_cfg(ts, cfg);
+		error = goodix_send_cfg(ts, cfg->data, cfg->size);
 		if (error)
 			goto err_release_cfg;
 	}
@@ -889,7 +1237,8 @@ static int goodix_ts_probe(struct i2c_client *client,
 	if (error)
 		return error;
 
-	if (ts->gpiod_int && ts->gpiod_rst) {
+reset:
+	if (ts->reset_controller_at_probe) {
 		/* reset the controller */
 		error = goodix_reset(ts);
 		if (error) {
@@ -900,6 +1249,12 @@ static int goodix_ts_probe(struct i2c_client *client,
 
 	error = goodix_i2c_test(client);
 	if (error) {
+		if (!ts->reset_controller_at_probe &&
+		    ts->irq_pin_access_method != IRQ_PIN_ACCESS_NONE) {
+			/* Retry after a controller reset */
+			ts->reset_controller_at_probe = true;
+			goto reset;
+		}
 		dev_err(&client->dev, "I2C communication failure: %d\n", error);
 		return error;
 	}
@@ -912,10 +1267,10 @@ static int goodix_ts_probe(struct i2c_client *client,
 
 	ts->chip = goodix_get_chip_data(ts->id);
 
-	if (ts->gpiod_int && ts->gpiod_rst) {
+	if (ts->load_cfg_from_disk) {
 		/* update device config */
 		ts->cfg_name = devm_kasprintf(&client->dev, GFP_KERNEL,
-					      "goodix_%d_cfg.bin", ts->id);
+					      "goodix_%s_cfg.bin", ts->id);
 		if (!ts->cfg_name)
 			return -ENOMEM;
 
@@ -943,7 +1298,7 @@ static int goodix_ts_remove(struct i2c_client *client)
 {
 	struct goodix_ts_data *ts = i2c_get_clientdata(client);
 
-	if (ts->gpiod_int && ts->gpiod_rst)
+	if (ts->load_cfg_from_disk)
 		wait_for_completion(&ts->firmware_loading_complete);
 
 	return 0;
@@ -955,19 +1310,20 @@ static int __maybe_unused goodix_suspend(struct device *dev)
 	struct goodix_ts_data *ts = i2c_get_clientdata(client);
 	int error;
 
+	if (ts->load_cfg_from_disk)
+		wait_for_completion(&ts->firmware_loading_complete);
+
 	/* We need gpio pins to suspend/resume */
-	if (!ts->gpiod_int || !ts->gpiod_rst) {
+	if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
 		disable_irq(client->irq);
 		return 0;
 	}
 
-	wait_for_completion(&ts->firmware_loading_complete);
-
 	/* Free IRQ as IRQ pin is used as output in the suspend sequence */
 	goodix_free_irq(ts);
 
 	/* Output LOW on the INT pin for 5 ms */
-	error = gpiod_direction_output(ts->gpiod_int, 0);
+	error = goodix_irq_direction_output(ts, 0);
 	if (error) {
 		goodix_request_irq(ts);
 		return error;
@@ -979,7 +1335,7 @@ static int __maybe_unused goodix_suspend(struct device *dev)
 				    GOODIX_CMD_SCREEN_OFF);
 	if (error) {
 		dev_err(&ts->client->dev, "Screen off command failed\n");
-		gpiod_direction_input(ts->gpiod_int);
+		goodix_irq_direction_input(ts);
 		goodix_request_irq(ts);
 		return -EAGAIN;
 	}
@@ -997,9 +1353,10 @@ static int __maybe_unused goodix_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct goodix_ts_data *ts = i2c_get_clientdata(client);
+	u8 config_ver;
 	int error;
 
-	if (!ts->gpiod_int || !ts->gpiod_rst) {
+	if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
 		enable_irq(client->irq);
 		return 0;
 	}
@@ -1008,7 +1365,7 @@ static int __maybe_unused goodix_resume(struct device *dev)
 	 * Exit sleep mode by outputting HIGH level to INT pin
 	 * for 2ms~5ms.
 	 */
-	error = gpiod_direction_output(ts->gpiod_int, 1);
+	error = goodix_irq_direction_output(ts, 1);
 	if (error)
 		return error;
 
@@ -1018,6 +1375,27 @@ static int __maybe_unused goodix_resume(struct device *dev)
 	if (error)
 		return error;
 
+	error = goodix_i2c_read(ts->client, ts->chip->config_addr,
+				&config_ver, 1);
+	if (error)
+		dev_warn(dev, "Error reading config version: %d, resetting controller\n",
+			 error);
+	else if (config_ver != ts->config[0])
+		dev_info(dev, "Config version mismatch %d != %d, resetting controller\n",
+			 config_ver, ts->config[0]);
+
+	if (error != 0 || config_ver != ts->config[0]) {
+		error = goodix_reset(ts);
+		if (error) {
+			dev_err(dev, "Controller reset failed.\n");
+			return error;
+		}
+
+		error = goodix_send_cfg(ts, ts->config, ts->chip->config_len);
+		if (error)
+			return error;
+	}
+
 	error = goodix_request_irq(ts);
 	if (error)
 		return error;
@@ -1050,6 +1428,8 @@ static const struct of_device_id goodix_of_match[] = {
 	{ .compatible = "goodix,gt911" },
 	{ .compatible = "goodix,gt9110" },
 	{ .compatible = "goodix,gt912" },
+	{ .compatible = "goodix,gt9147" },
+	{ .compatible = "goodix,gt917s" },
 	{ .compatible = "goodix,gt927" },
 	{ .compatible = "goodix,gt9271" },
 	{ .compatible = "goodix,gt928" },
diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
index e16ec4c7043a..97342e14b4f1 100644
--- a/drivers/input/touchscreen/of_touchscreen.c
+++ b/drivers/input/touchscreen/of_touchscreen.c
@@ -66,7 +66,7 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
 {
 	struct device *dev = input->dev.parent;
 	struct input_absinfo *absinfo;
-	unsigned int axis;
+	unsigned int axis, axis_x, axis_y;
 	unsigned int minimum, maximum, fuzz;
 	bool data_present;
 
@@ -74,33 +74,34 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
 	if (!input->absinfo)
 		return;
 
-	axis = multitouch ? ABS_MT_POSITION_X : ABS_X;
+	axis_x = multitouch ? ABS_MT_POSITION_X : ABS_X;
+	axis_y = multitouch ? ABS_MT_POSITION_Y : ABS_Y;
+
 	data_present = touchscreen_get_prop_u32(dev, "touchscreen-min-x",
-						input_abs_get_min(input, axis),
+						input_abs_get_min(input, axis_x),
 						&minimum) |
 		       touchscreen_get_prop_u32(dev, "touchscreen-size-x",
 						input_abs_get_max(input,
-								  axis) + 1,
+								  axis_x) + 1,
 						&maximum) |
 		       touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
-						input_abs_get_fuzz(input, axis),
+						input_abs_get_fuzz(input, axis_x),
 						&fuzz);
 	if (data_present)
-		touchscreen_set_params(input, axis, minimum, maximum - 1, fuzz);
+		touchscreen_set_params(input, axis_x, minimum, maximum - 1, fuzz);
 
-	axis = multitouch ? ABS_MT_POSITION_Y : ABS_Y;
 	data_present = touchscreen_get_prop_u32(dev, "touchscreen-min-y",
-						input_abs_get_min(input, axis),
+						input_abs_get_min(input, axis_y),
 						&minimum) |
 		       touchscreen_get_prop_u32(dev, "touchscreen-size-y",
 						input_abs_get_max(input,
-								  axis) + 1,
+								  axis_y) + 1,
 						&maximum) |
 		       touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
-						input_abs_get_fuzz(input, axis),
+						input_abs_get_fuzz(input, axis_y),
 						&fuzz);
 	if (data_present)
-		touchscreen_set_params(input, axis, minimum, maximum - 1, fuzz);
+		touchscreen_set_params(input, axis_y, minimum, maximum - 1, fuzz);
 
 	axis = multitouch ? ABS_MT_PRESSURE : ABS_PRESSURE;
 	data_present = touchscreen_get_prop_u32(dev,
@@ -117,15 +118,13 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
 	if (!prop)
 		return;
 
-	axis = multitouch ? ABS_MT_POSITION_X : ABS_X;
-
-	prop->max_x = input_abs_get_max(input, axis);
-	prop->max_y = input_abs_get_max(input, axis + 1);
+	prop->max_x = input_abs_get_max(input, axis_x);
+	prop->max_y = input_abs_get_max(input, axis_y);
 
 	prop->invert_x =
 		device_property_read_bool(dev, "touchscreen-inverted-x");
 	if (prop->invert_x) {
-		absinfo = &input->absinfo[axis];
+		absinfo = &input->absinfo[axis_x];
 		absinfo->maximum -= absinfo->minimum;
 		absinfo->minimum = 0;
 	}
@@ -133,7 +132,7 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
 	prop->invert_y =
 		device_property_read_bool(dev, "touchscreen-inverted-y");
 	if (prop->invert_y) {
-		absinfo = &input->absinfo[axis + 1];
+		absinfo = &input->absinfo[axis_y];
 		absinfo->maximum -= absinfo->minimum;
 		absinfo->minimum = 0;
 	}
@@ -141,7 +140,7 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
 	prop->swap_x_y =
 		device_property_read_bool(dev, "touchscreen-swapped-x-y");
 	if (prop->swap_x_y)
-		swap(input->absinfo[axis], input->absinfo[axis + 1]);
+		swap(input->absinfo[axis_x], input->absinfo[axis_y]);
 }
 EXPORT_SYMBOL(touchscreen_parse_properties);