6 files changed, 346 insertions, 45 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 06ea8da95c62..07ac77d393a4 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -659,17 +659,17 @@ config TOUCHSCREEN_PCAP
 	  To compile this driver as a module, choose M here: the
 	  module will be called pcap_ts.
 
-config TOUCHSCREEN_TPS6507X
-	tristate "TPS6507x based touchscreens"
+config TOUCHSCREEN_ST1232
+	tristate "Sitronix ST1232 touchscreen controllers"
 	depends on I2C
 	help
-	  Say Y here if you have a TPS6507x based touchscreen
-	  controller.
+	  Say Y here if you want to support Sitronix ST1232
+	  touchscreen controller.
 
 	  If unsure, say N.
 
 	  To compile this driver as a module, choose M here: the
-	  module will be called tps6507x_ts.
+	  module will be called st1232_ts.
 
 config TOUCHSCREEN_STMPE
 	tristate "STMicroelectronics STMPE touchscreens"
@@ -681,4 +681,16 @@ config TOUCHSCREEN_STMPE
 	  To compile this driver as a module, choose M here: the
 	  module will be called stmpe-ts.
 
+config TOUCHSCREEN_TPS6507X
+	tristate "TPS6507x based touchscreens"
+	depends on I2C
+	help
+	  Say Y here if you have a TPS6507x based touchscreen
+	  controller.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tps6507x_ts.
+
 endif
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 7cc1b4f4b677..718bcc814952 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -39,6 +39,7 @@ obj-$(CONFIG_TOUCHSCREEN_PCAP)		+= pcap_ts.o
 obj-$(CONFIG_TOUCHSCREEN_PENMOUNT)	+= penmount.o
 obj-$(CONFIG_TOUCHSCREEN_QT602240)	+= qt602240_ts.o
 obj-$(CONFIG_TOUCHSCREEN_S3C2410)	+= s3c2410_ts.o
+obj-$(CONFIG_TOUCHSCREEN_ST1232)	+= st1232.o
 obj-$(CONFIG_TOUCHSCREEN_STMPE)		+= stmpe-ts.o
 obj-$(CONFIG_TOUCHSCREEN_TNETV107X)	+= tnetv107x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213)	+= touchit213.o
diff --git a/drivers/input/touchscreen/bu21013_ts.c b/drivers/input/touchscreen/bu21013_ts.c
index 2ca9e5d66460..f7fa9ef4cd65 100644
--- a/drivers/input/touchscreen/bu21013_ts.c
+++ b/drivers/input/touchscreen/bu21013_ts.c
@@ -365,7 +365,7 @@ static int bu21013_init_chip(struct bu21013_ts_data *data)
 	}
 
 	retval = i2c_smbus_write_byte_data(i2c, BU21013_TH_OFF_REG,
-				BU21013_TH_OFF_4 || BU21013_TH_OFF_3);
+				BU21013_TH_OFF_4 | BU21013_TH_OFF_3);
 	if (retval < 0) {
 		dev_err(&i2c->dev, "BU21013_TH_OFF reg write failed\n");
 		return retval;
diff --git a/drivers/input/touchscreen/qt602240_ts.c b/drivers/input/touchscreen/qt602240_ts.c
index 66b26ad3032a..4dcb0e872f6a 100644
--- a/drivers/input/touchscreen/qt602240_ts.c
+++ b/drivers/input/touchscreen/qt602240_ts.c
@@ -969,7 +969,7 @@ static int qt602240_initialize(struct qt602240_data *data)
 		return error;
 
 	data->object_table = kcalloc(info->object_num,
-				     sizeof(struct qt602240_data),
+				     sizeof(struct qt602240_object),
 				     GFP_KERNEL);
 	if (!data->object_table) {
 		dev_err(&client->dev, "Failed to allocate memory\n");
@@ -1324,8 +1324,9 @@ static int __devexit qt602240_remove(struct i2c_client *client)
 }
 
 #ifdef CONFIG_PM
-static int qt602240_suspend(struct i2c_client *client, pm_message_t mesg)
+static int qt602240_suspend(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct qt602240_data *data = i2c_get_clientdata(client);
 	struct input_dev *input_dev = data->input_dev;
 
@@ -1339,8 +1340,9 @@ static int qt602240_suspend(struct i2c_client *client, pm_message_t mesg)
 	return 0;
 }
 
-static int qt602240_resume(struct i2c_client *client)
+static int qt602240_resume(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct qt602240_data *data = i2c_get_clientdata(client);
 	struct input_dev *input_dev = data->input_dev;
 
@@ -1359,9 +1361,11 @@ static int qt602240_resume(struct i2c_client *client)
 
 	return 0;
 }
-#else
-#define qt602240_suspend	NULL
-#define qt602240_resume		NULL
+
+static const struct dev_pm_ops qt602240_pm_ops = {
+	.suspend	= qt602240_suspend,
+	.resume		= qt602240_resume,
+};
 #endif
 
 static const struct i2c_device_id qt602240_id[] = {
@@ -1374,11 +1378,12 @@ static struct i2c_driver qt602240_driver = {
 	.driver = {
 		.name	= "qt602240_ts",
 		.owner	= THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm	= &qt602240_pm_ops,
+#endif
 	},
 	.probe		= qt602240_probe,
 	.remove		= __devexit_p(qt602240_remove),
-	.suspend	= qt602240_suspend,
-	.resume		= qt602240_resume,
 	.id_table	= qt602240_id,
 };
 
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
new file mode 100644
index 000000000000..4ab371358b33
--- /dev/null
+++ b/drivers/input/touchscreen/st1232.c
@@ -0,0 +1,274 @@
+/*
+ * ST1232 Touchscreen Controller Driver
+ *
+ * Copyright (C) 2010 Renesas Solutions Corp.
+ *	Tony SIM <chinyeow.sim.xt@renesas.com>
+ *
+ * Using code from:
+ *  - android.git.kernel.org: projects/kernel/common.git: synaptics_i2c_rmi.c
+ *	Copyright (C) 2007 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#define ST1232_TS_NAME	"st1232-ts"
+
+#define MIN_X		0x00
+#define MIN_Y		0x00
+#define MAX_X		0x31f	/* (800 - 1) */
+#define MAX_Y		0x1df	/* (480 - 1) */
+#define MAX_AREA	0xff
+#define MAX_FINGERS	2
+
+struct st1232_ts_finger {
+	u16 x;
+	u16 y;
+	u8 t;
+	bool is_valid;
+};
+
+struct st1232_ts_data {
+	struct i2c_client *client;
+	struct input_dev *input_dev;
+	struct st1232_ts_finger finger[MAX_FINGERS];
+};
+
+static int st1232_ts_read_data(struct st1232_ts_data *ts)
+{
+	struct st1232_ts_finger *finger = ts->finger;
+	struct i2c_client *client = ts->client;
+	struct i2c_msg msg[2];
+	int error;
+	u8 start_reg;
+	u8 buf[10];
+
+	/* read touchscreen data from ST1232 */
+	msg[0].addr = client->addr;
+	msg[0].flags = 0;
+	msg[0].len = 1;
+	msg[0].buf = &start_reg;
+	start_reg = 0x10;
+
+	msg[1].addr = ts->client->addr;
+	msg[1].flags = I2C_M_RD;
+	msg[1].len = sizeof(buf);
+	msg[1].buf = buf;
+
+	error = i2c_transfer(client->adapter, msg, 2);
+	if (error < 0)
+		return error;
+
+	/* get "valid" bits */
+	finger[0].is_valid = buf[2] >> 7;
+	finger[1].is_valid = buf[5] >> 7;
+
+	/* get xy coordinate */
+	if (finger[0].is_valid) {
+		finger[0].x = ((buf[2] & 0x0070) << 4) | buf[3];
+		finger[0].y = ((buf[2] & 0x0007) << 8) | buf[4];
+		finger[0].t = buf[8];
+	}
+
+	if (finger[1].is_valid) {
+		finger[1].x = ((buf[5] & 0x0070) << 4) | buf[6];
+		finger[1].y = ((buf[5] & 0x0007) << 8) | buf[7];
+		finger[1].t = buf[9];
+	}
+
+	return 0;
+}
+
+static irqreturn_t st1232_ts_irq_handler(int irq, void *dev_id)
+{
+	struct st1232_ts_data *ts = dev_id;
+	struct st1232_ts_finger *finger = ts->finger;
+	struct input_dev *input_dev = ts->input_dev;
+	int count = 0;
+	int i, ret;
+
+	ret = st1232_ts_read_data(ts);
+	if (ret < 0)
+		goto end;
+
+	/* multi touch protocol */
+	for (i = 0; i < MAX_FINGERS; i++) {
+		if (!finger[i].is_valid)
+			continue;
+
+		input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, finger[i].t);
+		input_report_abs(input_dev, ABS_MT_POSITION_X, finger[i].x);
+		input_report_abs(input_dev, ABS_MT_POSITION_Y, finger[i].y);
+		input_mt_sync(input_dev);
+		count++;
+	}
+
+	/* SYN_MT_REPORT only if no contact */
+	if (!count)
+		input_mt_sync(input_dev);
+
+	/* SYN_REPORT */
+	input_sync(input_dev);
+
+end:
+	return IRQ_HANDLED;
+}
+
+static int __devinit st1232_ts_probe(struct i2c_client *client,
+					const struct i2c_device_id *id)
+{
+	struct st1232_ts_data *ts;
+	struct input_dev *input_dev;
+	int error;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+		dev_err(&client->dev, "need I2C_FUNC_I2C\n");
+		return -EIO;
+	}
+
+	if (!client->irq) {
+		dev_err(&client->dev, "no IRQ?\n");
+		return -EINVAL;
+	}
+
+
+	ts = kzalloc(sizeof(struct st1232_ts_data), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!ts || !input_dev) {
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	ts->client = client;
+	ts->input_dev = input_dev;
+
+	input_dev->name = "st1232-touchscreen";
+	input_dev->id.bustype = BUS_I2C;
+	input_dev->dev.parent = &client->dev;
+
+	__set_bit(EV_SYN, input_dev->evbit);
+	__set_bit(EV_KEY, input_dev->evbit);
+	__set_bit(EV_ABS, input_dev->evbit);
+
+	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, MAX_AREA, 0, 0);
+	input_set_abs_params(input_dev, ABS_MT_POSITION_X, MIN_X, MAX_X, 0, 0);
+	input_set_abs_params(input_dev, ABS_MT_POSITION_Y, MIN_Y, MAX_Y, 0, 0);
+
+	error = request_threaded_irq(client->irq, NULL, st1232_ts_irq_handler,
+				     IRQF_ONESHOT, client->name, ts);
+	if (error) {
+		dev_err(&client->dev, "Failed to register interrupt\n");
+		goto err_free_mem;
+	}
+
+	error = input_register_device(ts->input_dev);
+	if (error) {
+		dev_err(&client->dev, "Unable to register %s input device\n",
+			input_dev->name);
+		goto err_free_irq;
+	}
+
+	i2c_set_clientdata(client, ts);
+	device_init_wakeup(&client->dev, 1);
+
+	return 0;
+
+err_free_irq:
+	free_irq(client->irq, ts);
+err_free_mem:
+	input_free_device(input_dev);
+	kfree(ts);
+	return error;
+}
+
+static int __devexit st1232_ts_remove(struct i2c_client *client)
+{
+	struct st1232_ts_data *ts = i2c_get_clientdata(client);
+
+	device_init_wakeup(&client->dev, 0);
+	free_irq(client->irq, ts);
+	input_unregister_device(ts->input_dev);
+	kfree(ts);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int st1232_ts_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	if (device_may_wakeup(&client->dev))
+		enable_irq_wake(client->irq);
+	else
+		disable_irq(client->irq);
+
+	return 0;
+}
+
+static int st1232_ts_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	if (device_may_wakeup(&client->dev))
+		disable_irq_wake(client->irq);
+	else
+		enable_irq(client->irq);
+
+	return 0;
+}
+
+static const struct dev_pm_ops st1232_ts_pm_ops = {
+	.suspend	= st1232_ts_suspend,
+	.resume		= st1232_ts_resume,
+};
+#endif
+
+static const struct i2c_device_id st1232_ts_id[] = {
+	{ ST1232_TS_NAME, 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, st1232_ts_id);
+
+static struct i2c_driver st1232_ts_driver = {
+	.probe		= st1232_ts_probe,
+	.remove		= __devexit_p(st1232_ts_remove),
+	.id_table	= st1232_ts_id,
+	.driver = {
+		.name	= ST1232_TS_NAME,
+		.owner	= THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm	= &st1232_ts_pm_ops,
+#endif
+	},
+};
+
+static int __init st1232_ts_init(void)
+{
+	return i2c_add_driver(&st1232_ts_driver);
+}
+module_init(st1232_ts_init);
+
+static void __exit st1232_ts_exit(void)
+{
+	i2c_del_driver(&st1232_ts_driver);
+}
+module_exit(st1232_ts_exit);
+
+MODULE_AUTHOR("Tony SIM <chinyeow.sim.xt@renesas.com>");
+MODULE_DESCRIPTION("SITRONIX ST1232 Touchscreen Controller Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c
index 9ae4c7b16ba7..8ed53aded2d3 100644
--- a/drivers/input/touchscreen/wacom_w8001.c
+++ b/drivers/input/touchscreen/wacom_w8001.c
@@ -15,10 +15,11 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
-#include <linux/input.h>
+#include <linux/input/mt.h>
 #include <linux/serio.h>
 #include <linux/init.h>
 #include <linux/ctype.h>
+#include <linux/delay.h>
 
 #define DRIVER_DESC	"Wacom W8001 serial touchscreen driver"
 
@@ -37,6 +38,7 @@ MODULE_LICENSE("GPL");
 
 #define W8001_QUERY_PACKET	0x20
 
+#define W8001_CMD_STOP		'0'
 #define W8001_CMD_START		'1'
 #define W8001_CMD_QUERY		'*'
 #define W8001_CMD_TOUCHQUERY	'%'
@@ -48,8 +50,6 @@ MODULE_LICENSE("GPL");
 #define W8001_PKTLEN_TPCCTL	11	/* control packet */
 #define W8001_PKTLEN_TOUCH2FG	13
 
-#define MAX_TRACKING_ID		0xFF	/* arbitrarily chosen */
-
 struct w8001_coord {
 	u8 rdy;
 	u8 tsw;
@@ -87,7 +87,6 @@ struct w8001 {
 	char phys[32];
 	int type;
 	unsigned int pktlen;
-	int trkid[2];
 };
 
 static void parse_data(u8 *data, struct w8001_coord *coord)
@@ -116,28 +115,23 @@ static void parse_data(u8 *data, struct w8001_coord *coord)
 
 static void parse_touch(struct w8001 *w8001)
 {
-	static int trkid;
 	struct input_dev *dev = w8001->dev;
 	unsigned char *data = w8001->data;
 	int i;
 
 	for (i = 0; i < 2; i++) {
-		input_mt_slot(dev, i);
+		bool touch = data[0] & (1 << i);
 
-		if (data[0] & (1 << i)) {
+		input_mt_slot(dev, i);
+		input_mt_report_slot_state(dev, MT_TOOL_FINGER, touch);
+		if (touch) {
 			int x = (data[6 * i + 1] << 7) | (data[6 * i + 2]);
 			int y = (data[6 * i + 3] << 7) | (data[6 * i + 4]);
 			/* data[5,6] and [11,12] is finger capacity */
 
 			input_report_abs(dev, ABS_MT_POSITION_X, x);
 			input_report_abs(dev, ABS_MT_POSITION_Y, y);
-			input_report_abs(dev, ABS_MT_TOOL_TYPE, MT_TOOL_FINGER);
-			if (w8001->trkid[i] < 0)
-				w8001->trkid[i] = trkid++ & MAX_TRACKING_ID;
-		} else {
-			w8001->trkid[i] = -1;
 		}
-		input_report_abs(dev, ABS_MT_TRACKING_ID, w8001->trkid[i]);
 	}
 
 	input_sync(dev);
@@ -287,24 +281,46 @@ static int w8001_setup(struct w8001 *w8001)
 	struct w8001_coord coord;
 	int error;
 
-	error = w8001_command(w8001, W8001_CMD_QUERY, true);
+	error = w8001_command(w8001, W8001_CMD_STOP, false);
 	if (error)
 		return error;
 
-	parse_data(w8001->response, &coord);
+	msleep(250);	/* wait 250ms before querying the device */
 
-	input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0);
-	input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0);
-	input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0);
-	input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0);
-	input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0);
+	/* penabled? */
+	error = w8001_command(w8001, W8001_CMD_QUERY, true);
+	if (!error) {
+		__set_bit(BTN_TOOL_PEN, dev->keybit);
+		__set_bit(BTN_TOOL_RUBBER, dev->keybit);
+		__set_bit(BTN_STYLUS, dev->keybit);
+		__set_bit(BTN_STYLUS2, dev->keybit);
+		parse_data(w8001->response, &coord);
+
+		input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0);
+		input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0);
+		input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0);
+		if (coord.tilt_x && coord.tilt_y) {
+			input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0);
+			input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0);
+		}
+	}
 
+	/* Touch enabled? */
 	error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true);
-	if (!error) {
+
+	/*
+	 * Some non-touch devices may reply to the touch query. But their
+	 * second byte is empty, which indicates touch is not supported.
+	 */
+	if (!error && w8001->response[1]) {
 		struct w8001_touch_query touch;
 
 		parse_touchquery(w8001->response, &touch);
 
+		input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0);
+		input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0);
+		__set_bit(BTN_TOOL_FINGER, dev->keybit);
+
 		switch (touch.sensor_id) {
 		case 0:
 		case 2:
@@ -318,15 +334,13 @@ static int w8001_setup(struct w8001 *w8001)
 		case 5:
 			w8001->pktlen = W8001_PKTLEN_TOUCH2FG;
 
-			input_mt_create_slots(dev, 2);
-			input_set_abs_params(dev, ABS_MT_TRACKING_ID,
-						0, MAX_TRACKING_ID, 0, 0);
+			input_mt_init_slots(dev, 2);
 			input_set_abs_params(dev, ABS_MT_POSITION_X,
 						0, touch.x, 0, 0);
 			input_set_abs_params(dev, ABS_MT_POSITION_Y,
 						0, touch.y, 0, 0);
 			input_set_abs_params(dev, ABS_MT_TOOL_TYPE,
-						0, 0, 0, 0);
+						0, MT_TOOL_MAX, 0, 0);
 			break;
 		}
 	}
@@ -372,7 +386,6 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
 	w8001->serio = serio;
 	w8001->id = serio->id.id;
 	w8001->dev = input_dev;
-	w8001->trkid[0] = w8001->trkid[1] = -1;
 	init_completion(&w8001->cmd_done);
 	snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys);
 
@@ -385,11 +398,7 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
 	input_dev->dev.parent = &serio->dev;
 
 	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
-	input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
-	input_dev->keybit[BIT_WORD(BTN_TOOL_PEN)] |= BIT_MASK(BTN_TOOL_PEN);
-	input_dev->keybit[BIT_WORD(BTN_TOOL_RUBBER)] |= BIT_MASK(BTN_TOOL_RUBBER);
-	input_dev->keybit[BIT_WORD(BTN_STYLUS)] |= BIT_MASK(BTN_STYLUS);
-	input_dev->keybit[BIT_WORD(BTN_STYLUS2)] |= BIT_MASK(BTN_STYLUS2);
+	__set_bit(BTN_TOUCH, input_dev->keybit);
 
 	serio_set_drvdata(serio, w8001);
 	err = serio_open(serio, drv);