1 files changed, 353 insertions, 0 deletions
diff --git a/drivers/input/mouse/lifebook.c b/drivers/input/mouse/lifebook.c
new file mode 100644
index 000000000..bd9955730
--- /dev/null
+++ b/drivers/input/mouse/lifebook.c
@@ -0,0 +1,353 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Fujitsu B-series Lifebook PS/2 TouchScreen driver
+ *
+ * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
+ * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
+ *
+ * TouchScreen detection, absolute mode setting and packet layout is taken from
+ * Harald Hoyer's description of the device.
+ */
+
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/libps2.h>
+#include <linux/dmi.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "psmouse.h"
+#include "lifebook.h"
+
+struct lifebook_data {
+	struct input_dev *dev2;		/* Relative device */
+	char phys[32];
+};
+
+static bool lifebook_present;
+
+static const char *desired_serio_phys;
+
+static int lifebook_limit_serio3(const struct dmi_system_id *d)
+{
+	desired_serio_phys = "isa0060/serio3";
+	return 1;
+}
+
+static bool lifebook_use_6byte_proto;
+
+static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
+{
+	lifebook_use_6byte_proto = true;
+	return 1;
+}
+
+static const struct dmi_system_id lifebook_dmi_table[] __initconst = {
+	{
+		/* FLORA-ie 55mi */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
+		},
+	},
+	{
+		/* LifeBook B */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"),
+		},
+	},
+	{
+		/* LifeBook B */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
+		},
+	},
+	{
+		/* Lifebook B */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
+		},
+	},
+	{
+		/* Lifebook B-2130 */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
+		},
+	},
+	{
+		/* Lifebook B213x/B2150 */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
+		},
+	},
+	{
+		/* Zephyr */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
+		},
+	},
+	{
+		/* Panasonic CF-18 */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
+		},
+		.callback = lifebook_limit_serio3,
+	},
+	{
+		/* Panasonic CF-28 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
+		},
+		.callback = lifebook_set_6byte_proto,
+	},
+	{
+		/* Panasonic CF-29 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
+		},
+		.callback = lifebook_set_6byte_proto,
+	},
+	{
+		/* Panasonic CF-72 */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
+		},
+		.callback = lifebook_set_6byte_proto,
+	},
+	{
+		/* Lifebook B142 */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
+		},
+	},
+	{ }
+};
+
+void __init lifebook_module_init(void)
+{
+	lifebook_present = dmi_check_system(lifebook_dmi_table);
+}
+
+static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
+{
+	struct lifebook_data *priv = psmouse->private;
+	struct input_dev *dev1 = psmouse->dev;
+	struct input_dev *dev2 = priv ? priv->dev2 : NULL;
+	u8 *packet = psmouse->packet;
+	bool relative_packet = packet[0] & 0x08;
+
+	if (relative_packet || !lifebook_use_6byte_proto) {
+		if (psmouse->pktcnt != 3)
+			return PSMOUSE_GOOD_DATA;
+	} else {
+		switch (psmouse->pktcnt) {
+		case 1:
+			return (packet[0] & 0xf8) == 0x00 ?
+				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
+		case 2:
+			return PSMOUSE_GOOD_DATA;
+		case 3:
+			return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
+				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
+		case 4:
+			return (packet[3] & 0xf8) == 0xc0 ?
+				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
+		case 5:
+			return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
+				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
+		case 6:
+			if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
+				return PSMOUSE_BAD_DATA;
+			if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
+				return PSMOUSE_BAD_DATA;
+			break; /* report data */
+		}
+	}
+
+	if (relative_packet) {
+		if (!dev2)
+			psmouse_warn(psmouse,
+				     "got relative packet but no relative device set up\n");
+	} else {
+		if (lifebook_use_6byte_proto) {
+			input_report_abs(dev1, ABS_X,
+				((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
+			input_report_abs(dev1, ABS_Y,
+				4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
+		} else {
+			input_report_abs(dev1, ABS_X,
+				(packet[1] | ((packet[0] & 0x30) << 4)));
+			input_report_abs(dev1, ABS_Y,
+				1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
+		}
+		input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
+		input_sync(dev1);
+	}
+
+	if (dev2) {
+		if (relative_packet)
+			psmouse_report_standard_motion(dev2, packet);
+
+		psmouse_report_standard_buttons(dev2, packet[0]);
+		input_sync(dev2);
+	}
+
+	return PSMOUSE_FULL_PACKET;
+}
+
+static int lifebook_absolute_mode(struct psmouse *psmouse)
+{
+	struct ps2dev *ps2dev = &psmouse->ps2dev;
+	u8 param;
+	int error;
+
+	error = psmouse_reset(psmouse);
+	if (error)
+		return error;
+
+	/*
+	 * Enable absolute output -- ps2_command fails always but if
+	 * you leave this call out the touchscreen will never send
+	 * absolute coordinates
+	 */
+	param = lifebook_use_6byte_proto ? 0x08 : 0x07;
+	ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
+
+	return 0;
+}
+
+static void lifebook_relative_mode(struct psmouse *psmouse)
+{
+	struct ps2dev *ps2dev = &psmouse->ps2dev;
+	u8 param = 0x06;
+
+	ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
+}
+
+static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
+{
+	static const u8 params[] = { 0, 1, 2, 2, 3 };
+	u8 p;
+
+	if (resolution == 0 || resolution > 400)
+		resolution = 400;
+
+	p = params[resolution / 100];
+	ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
+	psmouse->resolution = 50 << p;
+}
+
+static void lifebook_disconnect(struct psmouse *psmouse)
+{
+	struct lifebook_data *priv = psmouse->private;
+
+	psmouse_reset(psmouse);
+	if (priv) {
+		input_unregister_device(priv->dev2);
+		kfree(priv);
+	}
+	psmouse->private = NULL;
+}
+
+int lifebook_detect(struct psmouse *psmouse, bool set_properties)
+{
+	if (!lifebook_present)
+		return -ENXIO;
+
+	if (desired_serio_phys &&
+	    strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
+		return -ENXIO;
+
+	if (set_properties) {
+		psmouse->vendor = "Fujitsu";
+		psmouse->name = "Lifebook TouchScreen";
+	}
+
+	return 0;
+}
+
+static int lifebook_create_relative_device(struct psmouse *psmouse)
+{
+	struct input_dev *dev2;
+	struct lifebook_data *priv;
+	int error = -ENOMEM;
+
+	priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
+	dev2 = input_allocate_device();
+	if (!priv || !dev2)
+		goto err_out;
+
+	priv->dev2 = dev2;
+	snprintf(priv->phys, sizeof(priv->phys),
+		 "%s/input1", psmouse->ps2dev.serio->phys);
+
+	dev2->phys = priv->phys;
+	dev2->name = "LBPS/2 Fujitsu Lifebook Touchpad";
+	dev2->id.bustype = BUS_I8042;
+	dev2->id.vendor  = 0x0002;
+	dev2->id.product = PSMOUSE_LIFEBOOK;
+	dev2->id.version = 0x0000;
+	dev2->dev.parent = &psmouse->ps2dev.serio->dev;
+
+	input_set_capability(dev2, EV_REL, REL_X);
+	input_set_capability(dev2, EV_REL, REL_Y);
+	input_set_capability(dev2, EV_KEY, BTN_LEFT);
+	input_set_capability(dev2, EV_KEY, BTN_RIGHT);
+
+	error = input_register_device(priv->dev2);
+	if (error)
+		goto err_out;
+
+	psmouse->private = priv;
+	return 0;
+
+ err_out:
+	input_free_device(dev2);
+	kfree(priv);
+	return error;
+}
+
+int lifebook_init(struct psmouse *psmouse)
+{
+	struct input_dev *dev1 = psmouse->dev;
+	int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
+	int error;
+
+	error = lifebook_absolute_mode(psmouse);
+	if (error)
+		return error;
+
+	/* Clear default capabilities */
+	bitmap_zero(dev1->evbit, EV_CNT);
+	bitmap_zero(dev1->relbit, REL_CNT);
+	bitmap_zero(dev1->keybit, KEY_CNT);
+
+	input_set_capability(dev1, EV_KEY, BTN_TOUCH);
+	input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
+	input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
+
+	if (!desired_serio_phys) {
+		error = lifebook_create_relative_device(psmouse);
+		if (error) {
+			lifebook_relative_mode(psmouse);
+			return error;
+		}
+	}
+
+	psmouse->protocol_handler = lifebook_process_byte;
+	psmouse->set_resolution = lifebook_set_resolution;
+	psmouse->disconnect = lifebook_disconnect;
+	psmouse->reconnect  = lifebook_absolute_mode;
+
+	psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
+
+	/*
+	 * Use packet size = 3 even when using 6-byte protocol because
+	 * that's what POLL will return on Lifebooks (according to spec).
+	 */
+	psmouse->pktsize = 3;
+
+	return 0;
+}
+