Merge branch 'next' into for-linus

11 files changed, 360 insertions, 259 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 72e2712c7e2..87a1ae63bcc 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -366,11 +366,11 @@ config TOUCHSCREEN_WM97XX_ATMEL
 	  be called atmel-wm97xx.
 
 config TOUCHSCREEN_WM97XX_MAINSTONE
-	tristate "WM97xx Mainstone accelerated touch"
+	tristate "WM97xx Mainstone/Palm accelerated touch"
 	depends on TOUCHSCREEN_WM97XX && ARCH_PXA
 	help
 	  Say Y here for support for streaming mode with WM97xx touchscreens
-	  on Mainstone systems.
+	  on Mainstone, Palm Tungsten T5, TX and LifeDrive systems.
 
 	  If unsure, say N.
 
@@ -406,6 +406,7 @@ config TOUCHSCREEN_USB_COMPOSITE
 	  - IRTOUCHSYSTEMS/UNITOP
 	  - IdealTEK URTC1000
 	  - GoTop Super_Q2/GogoPen/PenPower tablets
+	  - JASTEC USB Touch Controller/DigiTech DTR-02U
 
 	  Have a look at <http://linux.chapter7.ch/touchkit/> for
 	  a usage description and the required user-space stuff.
@@ -468,6 +469,16 @@ config TOUCHSCREEN_USB_GOTOP
 	bool "GoTop Super_Q2/GogoPen/PenPower tablet device support" if EMBEDDED
 	depends on TOUCHSCREEN_USB_COMPOSITE
 
+config TOUCHSCREEN_USB_JASTEC
+	default y
+	bool "JASTEC/DigiTech DTR-02U USB touch controller device support" if EMBEDDED
+	depends on TOUCHSCREEN_USB_COMPOSITE
+
+config TOUCHSCREEN_USB_E2I
+	default y
+	bool "e2i Touchscreen controller (e.g. from Mimo 740)"
+	depends on TOUCHSCREEN_USB_COMPOSITE
+
 config TOUCHSCREEN_TOUCHIT213
 	tristate "Sahara TouchIT-213 touchscreen"
 	select SERIO
@@ -492,6 +503,7 @@ config TOUCHSCREEN_TSC2007
 
 config TOUCHSCREEN_W90X900
 	tristate "W90P910 touchscreen driver"
+	depends on HAVE_CLK
 	help
 	  Say Y here if you have a W90P910 based touchscreen.
 
diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c
index 055969e8be1..9c7fce4d74d 100644
--- a/drivers/input/touchscreen/atmel_tsadcc.c
+++ b/drivers/input/touchscreen/atmel_tsadcc.c
@@ -204,14 +204,14 @@ static int __devinit atmel_tsadcc_probe(struct platform_device *pdev)
 		goto err_free_dev;
 	}
 
-	if (!request_mem_region(res->start, res->end - res->start + 1,
+	if (!request_mem_region(res->start, resource_size(res),
 				"atmel tsadcc regs")) {
 		dev_err(&pdev->dev, "resources is unavailable.\n");
 		err = -EBUSY;
 		goto err_free_dev;
 	}
 
-	tsc_base = ioremap(res->start, res->end - res->start + 1);
+	tsc_base = ioremap(res->start, resource_size(res));
 	if (!tsc_base) {
 		dev_err(&pdev->dev, "failed to map registers.\n");
 		err = -ENOMEM;
@@ -286,7 +286,7 @@ err_free_irq:
 err_unmap_regs:
 	iounmap(tsc_base);
 err_release_mem:
-	release_mem_region(res->start, res->end - res->start + 1);
+	release_mem_region(res->start, resource_size(res));
 err_free_dev:
 	input_free_device(ts_dev->input);
 err_free_mem:
@@ -305,7 +305,7 @@ static int __devexit atmel_tsadcc_remove(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	iounmap(tsc_base);
-	release_mem_region(res->start, res->end - res->start + 1);
+	release_mem_region(res->start, resource_size(res));
 
 	clk_disable(ts_dev->clk);
 	clk_put(ts_dev->clk);
diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c
index 3ab92222a52..9029bd3f34e 100644
--- a/drivers/input/touchscreen/eeti_ts.c
+++ b/drivers/input/touchscreen/eeti_ts.c
@@ -32,6 +32,7 @@
 #include <linux/i2c.h>
 #include <linux/timer.h>
 #include <linux/gpio.h>
+#include <linux/input/eeti_ts.h>
 
 static int flip_x;
 module_param(flip_x, bool, 0644);
@@ -46,7 +47,7 @@ struct eeti_ts_priv {
 	struct input_dev *input;
 	struct work_struct work;
 	struct mutex mutex;
-	int irq;
+	int irq, irq_active_high;
 };
 
 #define EETI_TS_BITDEPTH	(11)
@@ -58,6 +59,11 @@ struct eeti_ts_priv {
 #define REPORT_BIT_HAS_PRESSURE	(1 << 6)
 #define REPORT_RES_BITS(v)	(((v) >> 1) + EETI_TS_BITDEPTH)
 
+static inline int eeti_ts_irq_active(struct eeti_ts_priv *priv)
+{
+	return gpio_get_value(irq_to_gpio(priv->irq)) == priv->irq_active_high;
+}
+
 static void eeti_ts_read(struct work_struct *work)
 {
 	char buf[6];
@@ -67,7 +73,7 @@ static void eeti_ts_read(struct work_struct *work)
 
 	mutex_lock(&priv->mutex);
 
-	while (!gpio_get_value(irq_to_gpio(priv->irq)) && --to)
+	while (eeti_ts_irq_active(priv) && --to)
 		i2c_master_recv(priv->client, buf, sizeof(buf));
 
 	if (!to) {
@@ -140,8 +146,10 @@ static void eeti_ts_close(struct input_dev *dev)
 static int __devinit eeti_ts_probe(struct i2c_client *client,
 				   const struct i2c_device_id *idp)
 {
+	struct eeti_ts_platform_data *pdata;
 	struct eeti_ts_priv *priv;
 	struct input_dev *input;
+	unsigned int irq_flags;
 	int err = -ENOMEM;
 
 	/* In contrast to what's described in the datasheet, there seems
@@ -180,6 +188,14 @@ static int __devinit eeti_ts_probe(struct i2c_client *client,
 	priv->input = input;
 	priv->irq = client->irq;
 
+	pdata = client->dev.platform_data;
+
+	if (pdata)
+		priv->irq_active_high = pdata->irq_active_high;
+
+	irq_flags = priv->irq_active_high ?
+		IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING;
+
 	INIT_WORK(&priv->work, eeti_ts_read);
 	i2c_set_clientdata(client, priv);
 	input_set_drvdata(input, priv);
@@ -188,7 +204,7 @@ static int __devinit eeti_ts_probe(struct i2c_client *client,
 	if (err)
 		goto err1;
 
-	err = request_irq(priv->irq, eeti_ts_isr, IRQF_TRIGGER_FALLING,
+	err = request_irq(priv->irq, eeti_ts_isr, irq_flags,
 			  client->name, priv);
 	if (err) {
 		dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
diff --git a/drivers/input/touchscreen/h3600_ts_input.c b/drivers/input/touchscreen/h3600_ts_input.c
index 4d3139e2099..b4d7f63deff 100644
--- a/drivers/input/touchscreen/h3600_ts_input.c
+++ b/drivers/input/touchscreen/h3600_ts_input.c
@@ -148,9 +148,10 @@ unsigned int h3600_flite_power(struct input_dev *dev, enum flite_pwr pwr)
 	struct h3600_dev *ts = input_get_drvdata(dev);
 
 	/* Must be in this order */
-	ts->serio->write(ts->serio, 1);
-	ts->serio->write(ts->serio, pwr);
-	ts->serio->write(ts->serio, brightness);
+	serio_write(ts->serio, 1);
+	serio_write(ts->serio, pwr);
+	serio_write(ts->serio, brightness);
+
 	return 0;
 }
 
@@ -262,7 +263,7 @@ static int h3600ts_event(struct input_dev *dev, unsigned int type,
 
 	switch (type) {
 		case EV_LED: {
-		//	ts->serio->write(ts->serio, SOME_CMD);
+		//	serio_write(ts->serio, SOME_CMD);
 			return 0;
 		}
 	}
diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c
index 4cc047a5116..8fc3b08deb3 100644
--- a/drivers/input/touchscreen/mainstone-wm97xx.c
+++ b/drivers/input/touchscreen/mainstone-wm97xx.c
@@ -31,9 +31,11 @@
 #include <linux/interrupt.h>
 #include <linux/wm97xx.h>
 #include <linux/io.h>
+#include <linux/gpio.h>
+
 #include <mach/regs-ac97.h>
 
-#define VERSION		"0.13"
+#include <asm/mach-types.h>
 
 struct continuous {
 	u16 id;    /* codec id */
@@ -62,6 +64,7 @@ static const struct continuous cinfo[] = {
 /* continuous speed index */
 static int sp_idx;
 static u16 last, tries;
+static int irq;
 
 /*
  * Pen sampling frequency (Hz) in continuous mode.
@@ -171,7 +174,7 @@ up:
 
 static int wm97xx_acc_startup(struct wm97xx *wm)
 {
-	int idx = 0;
+	int idx = 0, ret = 0;
 
 	/* check we have a codec */
 	if (wm->ac97 == NULL)
@@ -191,18 +194,40 @@ static int wm97xx_acc_startup(struct wm97xx *wm)
 		 "mainstone accelerated touchscreen driver, %d samples/sec\n",
 		 cinfo[sp_idx].speed);
 
+	/* IRQ driven touchscreen is used on Palm hardware */
+	if (machine_is_palmt5() || machine_is_palmtx() || machine_is_palmld()) {
+		pen_int = 1;
+		irq = 27;
+		/* There is some obscure mutant of WM9712 interbred with WM9713
+		 * used on Palm HW */
+		wm->variant = WM97xx_WM1613;
+	} else if (machine_is_mainstone() && pen_int)
+		irq = 4;
+
+	if (irq) {
+		ret = gpio_request(irq, "Touchscreen IRQ");
+		if (ret)
+			goto out;
+
+		ret = gpio_direction_input(irq);
+		if (ret) {
+			gpio_free(irq);
+			goto out;
+		}
+
+		wm->pen_irq = gpio_to_irq(irq);
+		set_irq_type(wm->pen_irq, IRQ_TYPE_EDGE_BOTH);
+	} else /* pen irq not supported */
+		pen_int = 0;
+
 	/* codec specific irq config */
 	if (pen_int) {
 		switch (wm->id) {
 		case WM9705_ID2:
-			wm->pen_irq = IRQ_GPIO(4);
-			set_irq_type(IRQ_GPIO(4), IRQ_TYPE_EDGE_BOTH);
 			break;
 		case WM9712_ID2:
 		case WM9713_ID2:
-			/* enable pen down interrupt */
 			/* use PEN_DOWN GPIO 13 to assert IRQ on GPIO line 2 */
-			wm->pen_irq = MAINSTONE_AC97_IRQ;
 			wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN,
 					   WM97XX_GPIO_POL_HIGH,
 					   WM97XX_GPIO_STICKY,
@@ -220,23 +245,17 @@ static int wm97xx_acc_startup(struct wm97xx *wm)
 		}
 	}
 
-	return 0;
+out:
+	return ret;
 }
 
 static void wm97xx_acc_shutdown(struct wm97xx *wm)
 {
 	/* codec specific deconfig */
 	if (pen_int) {
-		switch (wm->id & 0xffff) {
-		case WM9705_ID2:
-			wm->pen_irq = 0;
-			break;
-		case WM9712_ID2:
-		case WM9713_ID2:
-			/* disable interrupt */
-			wm->pen_irq = 0;
-			break;
-		}
+		if (irq)
+			gpio_free(irq);
+		wm->pen_irq = 0;
 	}
 }
 
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 880f58c6a7c..7ef0d1420d3 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -21,15 +21,14 @@
  */
 
 #include <linux/module.h>
-#include <linux/hrtimer.h>
 #include <linux/slab.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
 #include <linux/i2c.h>
 #include <linux/i2c/tsc2007.h>
 
-#define TS_POLL_DELAY	(10 * 1000)	/* ns delay before the first sample */
-#define TS_POLL_PERIOD	(5 * 1000)	/* ns delay between samples */
+#define TS_POLL_DELAY			1 /* ms delay between samples */
+#define TS_POLL_PERIOD			1 /* ms delay between samples */
 
 #define TSC2007_MEASURE_TEMP0		(0x0 << 4)
 #define TSC2007_MEASURE_AUX		(0x2 << 4)
@@ -70,17 +69,14 @@ struct ts_event {
 struct tsc2007 {
 	struct input_dev	*input;
 	char			phys[32];
-	struct hrtimer		timer;
-	struct ts_event		tc;
+	struct delayed_work	work;
 
 	struct i2c_client	*client;
 
-	spinlock_t		lock;
-
 	u16			model;
 	u16			x_plate_ohms;
 
-	unsigned		pendown;
+	bool			pendown;
 	int			irq;
 
 	int			(*get_pendown_state)(void);
@@ -109,52 +105,96 @@ static inline int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd)
 	return val;
 }
 
-static void tsc2007_send_event(void *tsc)
+static void tsc2007_read_values(struct tsc2007 *tsc, struct ts_event *tc)
 {
-	struct tsc2007	*ts = tsc;
-	u32		rt;
-	u16		x, y, z1, z2;
+	/* y- still on; turn on only y+ (and ADC) */
+	tc->y = tsc2007_xfer(tsc, READ_Y);
+
+	/* turn y- off, x+ on, then leave in lowpower */
+	tc->x = tsc2007_xfer(tsc, READ_X);
+
+	/* turn y+ off, x- on; we'll use formula #1 */
+	tc->z1 = tsc2007_xfer(tsc, READ_Z1);
+	tc->z2 = tsc2007_xfer(tsc, READ_Z2);
 
-	x = ts->tc.x;
-	y = ts->tc.y;
-	z1 = ts->tc.z1;
-	z2 = ts->tc.z2;
+	/* Prepare for next touch reading - power down ADC, enable PENIRQ */
+	tsc2007_xfer(tsc, PWRDOWN);
+}
+
+static u32 tsc2007_calculate_pressure(struct tsc2007 *tsc, struct ts_event *tc)
+{
+	u32 rt = 0;
 
 	/* range filtering */
-	if (x == MAX_12BIT)
-		x = 0;
+	if (tc->x == MAX_12BIT)
+		tc->x = 0;
 
-	if (likely(x && z1)) {
+	if (likely(tc->x && tc->z1)) {
 		/* compute touch pressure resistance using equation #1 */
-		rt = z2;
-		rt -= z1;
-		rt *= x;
-		rt *= ts->x_plate_ohms;
-		rt /= z1;
+		rt = tc->z2 - tc->z1;
+		rt *= tc->x;
+		rt *= tsc->x_plate_ohms;
+		rt /= tc->z1;
 		rt = (rt + 2047) >> 12;
-	} else
-		rt = 0;
+	}
+
+	return rt;
+}
+
+static void tsc2007_send_up_event(struct tsc2007 *tsc)
+{
+	struct input_dev *input = tsc->input;
 
-	/* Sample found inconsistent by debouncing or pressure is beyond
-	 * the maximum. Don't report it to user space, repeat at least
-	 * once more the measurement
+	dev_dbg(&tsc->client->dev, "UP\n");
+
+	input_report_key(input, BTN_TOUCH, 0);
+	input_report_abs(input, ABS_PRESSURE, 0);
+	input_sync(input);
+}
+
+static void tsc2007_work(struct work_struct *work)
+{
+	struct tsc2007 *ts =
+		container_of(to_delayed_work(work), struct tsc2007, work);
+	struct ts_event tc;
+	u32 rt;
+
+	/*
+	 * NOTE: We can't rely on the pressure to determine the pen down
+	 * state, even though this controller has a pressure sensor.
+	 * The pressure value can fluctuate for quite a while after
+	 * lifting the pen and in some cases may not even settle at the
+	 * expected value.
+	 *
+	 * The only safe way to check for the pen up condition is in the
+	 * work function by reading the pen signal state (it's a GPIO
+	 * and IRQ). Unfortunately such callback is not always available,
+	 * in that case we have rely on the pressure anyway.
 	 */
+	if (ts->get_pendown_state) {
+		if (unlikely(!ts->get_pendown_state())) {
+			tsc2007_send_up_event(ts);
+			ts->pendown = false;
+			goto out;
+		}
+
+		dev_dbg(&ts->client->dev, "pen is still down\n");
+	}
+
+	tsc2007_read_values(ts, &tc);
+
+	rt = tsc2007_calculate_pressure(ts, &tc);
 	if (rt > MAX_12BIT) {
+		/*
+		 * Sample found inconsistent by debouncing or pressure is
+		 * beyond the maximum. Don't report it to user space,
+		 * repeat at least once more the measurement.
+		 */
 		dev_dbg(&ts->client->dev, "ignored pressure %d\n", rt);
+		goto out;
 
-		hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_PERIOD),
-			      HRTIMER_MODE_REL);
-		return;
 	}
 
-	/* NOTE: We can't rely on the pressure to determine the pen down
-	 * state, even this controller has a pressure sensor.  The pressure
-	 * value can fluctuate for quite a while after lifting the pen and
-	 * in some cases may not even settle at the expected value.
-	 *
-	 * The only safe way to check for the pen up condition is in the
-	 * timer by reading the pen signal state (it's a GPIO _and_ IRQ).
-	 */
 	if (rt) {
 		struct input_dev *input = ts->input;
 
@@ -162,102 +202,74 @@ static void tsc2007_send_event(void *tsc)
 			dev_dbg(&ts->client->dev, "DOWN\n");
 
 			input_report_key(input, BTN_TOUCH, 1);
-			ts->pendown = 1;
+			ts->pendown = true;
 		}
 
-		input_report_abs(input, ABS_X, x);
-		input_report_abs(input, ABS_Y, y);
+		input_report_abs(input, ABS_X, tc.x);
+		input_report_abs(input, ABS_Y, tc.y);
 		input_report_abs(input, ABS_PRESSURE, rt);
 
 		input_sync(input);
 
 		dev_dbg(&ts->client->dev, "point(%4d,%4d), pressure (%4u)\n",
-			x, y, rt);
+			tc.x, tc.y, rt);
+
+	} else if (!ts->get_pendown_state && ts->pendown) {
+		/*
+		 * We don't have callback to check pendown state, so we
+		 * have to assume that since pressure reported is 0 the
+		 * pen was lifted up.
+		 */
+		tsc2007_send_up_event(ts);
+		ts->pendown = false;
 	}
 
-	hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_PERIOD),
-			HRTIMER_MODE_REL);
-}
-
-static int tsc2007_read_values(struct tsc2007 *tsc)
-{
-	/* y- still on; turn on only y+ (and ADC) */
-	tsc->tc.y = tsc2007_xfer(tsc, READ_Y);
-
-	/* turn y- off, x+ on, then leave in lowpower */
-	tsc->tc.x = tsc2007_xfer(tsc, READ_X);
-
-	/* turn y+ off, x- on; we'll use formula #1 */
-	tsc->tc.z1 = tsc2007_xfer(tsc, READ_Z1);
-	tsc->tc.z2 = tsc2007_xfer(tsc, READ_Z2);
-
-	/* power down */
-	tsc2007_xfer(tsc, PWRDOWN);
-
-	return 0;
-}
-
-static enum hrtimer_restart tsc2007_timer(struct hrtimer *handle)
-{
-	struct tsc2007 *ts = container_of(handle, struct tsc2007, timer);
-	unsigned long flags;
-
-	spin_lock_irqsave(&ts->lock, flags);
-
-	if (unlikely(!ts->get_pendown_state() && ts->pendown)) {
-		struct input_dev *input = ts->input;
-
-		dev_dbg(&ts->client->dev, "UP\n");
-
-		input_report_key(input, BTN_TOUCH, 0);
-		input_report_abs(input, ABS_PRESSURE, 0);
-		input_sync(input);
-
-		ts->pendown = 0;
+ out:
+	if (ts->pendown)
+		schedule_delayed_work(&ts->work,
+				      msecs_to_jiffies(TS_POLL_PERIOD));
+	else
 		enable_irq(ts->irq);
-	} else {
-		/* pen is still down, continue with the measurement */
-		dev_dbg(&ts->client->dev, "pen is still down\n");
-
-		tsc2007_read_values(ts);
-		tsc2007_send_event(ts);
-	}
-
-	spin_unlock_irqrestore(&ts->lock, flags);
-
-	return HRTIMER_NORESTART;
 }
 
 static irqreturn_t tsc2007_irq(int irq, void *handle)
 {
 	struct tsc2007 *ts = handle;
-	unsigned long flags;
-
-	spin_lock_irqsave(&ts->lock, flags);
 
-	if (likely(ts->get_pendown_state())) {
+	if (!ts->get_pendown_state || likely(ts->get_pendown_state())) {
 		disable_irq_nosync(ts->irq);
-		hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_DELAY),
-					HRTIMER_MODE_REL);
+		schedule_delayed_work(&ts->work,
+				      msecs_to_jiffies(TS_POLL_DELAY));
 	}
 
 	if (ts->clear_penirq)
 		ts->clear_penirq();
 
-	spin_unlock_irqrestore(&ts->lock, flags);
-
 	return IRQ_HANDLED;
 }
 
-static int tsc2007_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
+static void tsc2007_free_irq(struct tsc2007 *ts)
+{
+	free_irq(ts->irq, ts);
+	if (cancel_delayed_work_sync(&ts->work)) {
+		/*
+		 * Work was pending, therefore we need to enable
+		 * IRQ here to balance the disable_irq() done in the
+		 * interrupt handler.
+		 */
+		enable_irq(ts->irq);
+	}
+}
+
+static int __devinit tsc2007_probe(struct i2c_client *client,
+				   const struct i2c_device_id *id)
 {
 	struct tsc2007 *ts;
 	struct tsc2007_platform_data *pdata = pdata = client->dev.platform_data;
 	struct input_dev *input_dev;
 	int err;
 
-	if (!pdata || !pdata->get_pendown_state) {
+	if (!pdata) {
 		dev_err(&client->dev, "platform data is required!\n");
 		return -EINVAL;
 	}
@@ -274,22 +286,15 @@ static int tsc2007_probe(struct i2c_client *client,
 	}
 
 	ts->client = client;
-	i2c_set_clientdata(client, ts);
-
+	ts->irq = client->irq;
 	ts->input = input_dev;
-
-	hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	ts->timer.function = tsc2007_timer;
-
-	spin_lock_init(&ts->lock);
+	INIT_DELAYED_WORK(&ts->work, tsc2007_work);
 
 	ts->model             = pdata->model;
 	ts->x_plate_ohms      = pdata->x_plate_ohms;
 	ts->get_pendown_state = pdata->get_pendown_state;
 	ts->clear_penirq      = pdata->clear_penirq;
 
-	pdata->init_platform_hw();
-
 	snprintf(ts->phys, sizeof(ts->phys),
 		 "%s/input0", dev_name(&client->dev));
 
@@ -304,9 +309,8 @@ static int tsc2007_probe(struct i2c_client *client,
 	input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0);
 	input_set_abs_params(input_dev, ABS_PRESSURE, 0, MAX_12BIT, 0, 0);
 
-	tsc2007_read_values(ts);
-
-	ts->irq = client->irq;
+	if (pdata->init_platform_hw)
+		pdata->init_platform_hw();
 
 	err = request_irq(ts->irq, tsc2007_irq, 0,
 			client->dev.driver->name, ts);
@@ -315,33 +319,39 @@ static int tsc2007_probe(struct i2c_client *client,
 		goto err_free_mem;
 	}
 
+	/* Prepare for touch readings - power down ADC and enable PENIRQ */
+	err = tsc2007_xfer(ts, PWRDOWN);
+	if (err < 0)
+		goto err_free_irq;
+
 	err = input_register_device(input_dev);
 	if (err)
 		goto err_free_irq;
 
-	dev_info(&client->dev, "registered with irq (%d)\n", ts->irq);
+	i2c_set_clientdata(client, ts);
 
 	return 0;
 
  err_free_irq:
-	free_irq(ts->irq, ts);
-	hrtimer_cancel(&ts->timer);
+	tsc2007_free_irq(ts);
+	if (pdata->exit_platform_hw)
+		pdata->exit_platform_hw();
  err_free_mem:
 	input_free_device(input_dev);
 	kfree(ts);
 	return err;
 }
 
-static int tsc2007_remove(struct i2c_client *client)
+static int __devexit tsc2007_remove(struct i2c_client *client)
 {
 	struct tsc2007	*ts = i2c_get_clientdata(client);
-	struct tsc2007_platform_data *pdata;
+	struct tsc2007_platform_data *pdata = client->dev.platform_data;
 
-	pdata = client->dev.platform_data;
-	pdata->exit_platform_hw();
+	tsc2007_free_irq(ts);
+
+	if (pdata->exit_platform_hw)
+		pdata->exit_platform_hw();
 
-	free_irq(ts->irq, ts);
-	hrtimer_cancel(&ts->timer);
 	input_unregister_device(ts->input);
 	kfree(ts);
 
@@ -362,7 +372,7 @@ static struct i2c_driver tsc2007_driver = {
 	},
 	.id_table	= tsc2007_idtable,
 	.probe		= tsc2007_probe,
-	.remove		= tsc2007_remove,
+	.remove		= __devexit_p(tsc2007_remove),
 };
 
 static int __init tsc2007_init(void)
diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c
index 3a7a58222f8..095f84b1f56 100644
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -128,9 +128,10 @@ static inline unsigned int ucb1400_ts_read_yres(struct ucb1400_ts *ucb)
 	return ucb1400_adc_read(ucb->ac97, 0, adcsync);
 }
 
-static inline int ucb1400_ts_pen_down(struct snd_ac97 *ac97)
+static inline int ucb1400_ts_pen_up(struct snd_ac97 *ac97)
 {
 	unsigned short val = ucb1400_reg_read(ac97, UCB_TS_CR);
+
 	return val & (UCB_TS_CR_TSPX_LOW | UCB_TS_CR_TSMX_LOW);
 }
 
@@ -209,7 +210,7 @@ static int ucb1400_ts_thread(void *_ucb)
 
 		msleep(10);
 
-		if (ucb1400_ts_pen_down(ucb->ac97)) {
+		if (ucb1400_ts_pen_up(ucb->ac97)) {
 			ucb1400_ts_irq_enable(ucb->ac97);
 
 			/*
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index fb7cb9bdfbd..68ece5801a5 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -13,6 +13,7 @@
  *  - IdealTEK URTC1000
  *  - General Touch
  *  - GoTop Super_Q2/GogoPen/PenPower tablets
+ *  - JASTEC USB touch controller/DigiTech DTR-02U
  *
  * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
  * Copyright (C) by Todd E. Johnson (mtouchusb.c)
@@ -118,6 +119,8 @@ enum {
 	DEVTYPE_IDEALTEK,
 	DEVTYPE_GENERAL_TOUCH,
 	DEVTYPE_GOTOP,
+	DEVTYPE_JASTEC,
+	DEVTYPE_E2I,
 };
 
 #define USB_DEVICE_HID_CLASS(vend, prod) \
@@ -191,11 +194,51 @@ static struct usb_device_id usbtouch_devices[] = {
 	{USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
 #endif
 
+#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
+	{USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_E2I
+	{USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
+#endif
 	{}
 };
 
 
 /*****************************************************************************
+ * e2i Part
+ */
+
+#ifdef CONFIG_TOUCHSCREEN_USB_E2I
+static int e2i_init(struct usbtouch_usb *usbtouch)
+{
+	int ret;
+
+	ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
+	                      0x01, 0x02, 0x0000, 0x0081,
+	                      NULL, 0, USB_CTRL_SET_TIMEOUT);
+
+	dbg("%s - usb_control_msg - E2I_RESET - bytes|err: %d",
+	    __func__, ret);
+	return ret;
+}
+
+static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
+{
+	int tmp = (pkt[0] << 8) | pkt[1];
+	dev->x  = (pkt[2] << 8) | pkt[3];
+	dev->y  = (pkt[4] << 8) | pkt[5];
+
+	tmp = tmp - 0xA000;
+	dev->touch = (tmp > 0);
+	dev->press = (tmp > 0 ? tmp : 0);
+
+	return 1;
+}
+#endif
+
+
+/*****************************************************************************
  * eGalax part
  */
 
@@ -559,6 +602,21 @@ static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 	dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
 	dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
 	dev->touch = pkt[0] & 0x01;
+
+	return 1;
+}
+#endif
+
+/*****************************************************************************
+ * JASTEC Part
+ */
+#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
+static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
+{
+	dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
+	dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
+	dev->touch = (pkt[0] & 0x40) >> 6;
+
 	return 1;
 }
 #endif
@@ -702,6 +760,29 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
 		.read_data	= gotop_read_data,
 	},
 #endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
+	[DEVTYPE_JASTEC] = {
+		.min_xc		= 0x0,
+		.max_xc		= 0x0fff,
+		.min_yc		= 0x0,
+		.max_yc		= 0x0fff,
+		.rept_size	= 4,
+		.read_data	= jastec_read_data,
+	},
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_E2I
+	[DEVTYPE_E2I] = {
+		.min_xc		= 0x0,
+		.max_xc		= 0x7fff,
+		.min_yc		= 0x0,
+		.max_yc		= 0x7fff,
+		.rept_size	= 6,
+		.init		= e2i_init,
+		.read_data	= e2i_read_data,
+	},
+#endif
 };
 
 
diff --git a/drivers/input/touchscreen/w90p910_ts.c b/drivers/input/touchscreen/w90p910_ts.c
index 6071f588257..dc4c9d6b67c 100644
--- a/drivers/input/touchscreen/w90p910_ts.c
+++ b/drivers/input/touchscreen/w90p910_ts.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/clk.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
 
@@ -47,8 +48,8 @@ enum ts_state {
 struct w90p910_ts {
 	struct input_dev *input;
 	struct timer_list timer;
+	struct clk *clk;
 	int irq_num;
-	void __iomem *clocken;
 	void __iomem *ts_reg;
 	spinlock_t lock;
 	enum ts_state state;
@@ -166,8 +167,7 @@ static int w90p910_open(struct input_dev *dev)
 	unsigned long val;
 
 	/* enable the ADC clock */
-	val = __raw_readl(w90p910_ts->clocken);
-	__raw_writel(val | ADC_CLK_EN, w90p910_ts->clocken);
+	clk_enable(w90p910_ts->clk);
 
 	__raw_writel(ADC_RST1, w90p910_ts->ts_reg);
 	msleep(1);
@@ -211,8 +211,7 @@ static void w90p910_close(struct input_dev *dev)
 	del_timer_sync(&w90p910_ts->timer);
 
 	/* stop the ADC clock */
-	val = __raw_readl(w90p910_ts->clocken);
-	__raw_writel(val & ~ADC_CLK_EN, w90p910_ts->clocken);
+	clk_disable(w90p910_ts->clk);
 }
 
 static int __devinit w90x900ts_probe(struct platform_device *pdev)
@@ -241,26 +240,24 @@ static int __devinit w90x900ts_probe(struct platform_device *pdev)
 		goto fail1;
 	}
 
-	if (!request_mem_region(res->start, res->end - res->start + 1,
+	if (!request_mem_region(res->start, resource_size(res),
 				pdev->name)) {
 		err = -EBUSY;
 		goto fail1;
 	}
 
-	w90p910_ts->ts_reg = ioremap(res->start, res->end - res->start + 1);
+	w90p910_ts->ts_reg = ioremap(res->start, resource_size(res));
 	if (!w90p910_ts->ts_reg) {
 		err = -ENOMEM;
 		goto fail2;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (!res) {
-		err = -ENXIO;
+	w90p910_ts->clk = clk_get(&pdev->dev, NULL);
+	if (IS_ERR(w90p910_ts->clk)) {
+		err = PTR_ERR(w90p910_ts->clk);
 		goto fail3;
 	}
 
-	w90p910_ts->clocken = (void __iomem *)res->start;
-
 	input_dev->name = "W90P910 TouchScreen";
 	input_dev->phys = "w90p910ts/event0";
 	input_dev->id.bustype = BUS_HOST;
@@ -283,20 +280,21 @@ static int __devinit w90x900ts_probe(struct platform_device *pdev)
 	if (request_irq(w90p910_ts->irq_num, w90p910_ts_interrupt,
 			IRQF_DISABLED, "w90p910ts", w90p910_ts)) {
 		err = -EBUSY;
-		goto fail3;
+		goto fail4;
 	}
 
 	err = input_register_device(w90p910_ts->input);
 	if (err)
-		goto fail4;
+		goto fail5;
 
 	platform_set_drvdata(pdev, w90p910_ts);
 
 	return 0;
 
-fail4:	free_irq(w90p910_ts->irq_num, w90p910_ts);
+fail5:	free_irq(w90p910_ts->irq_num, w90p910_ts);
+fail4:	clk_put(w90p910_ts->clk);
 fail3:	iounmap(w90p910_ts->ts_reg);
-fail2:	release_mem_region(res->start, res->end - res->start + 1);
+fail2:	release_mem_region(res->start, resource_size(res));
 fail1:	input_free_device(input_dev);
 	kfree(w90p910_ts);
 	return err;
@@ -311,8 +309,10 @@ static int __devexit w90x900ts_remove(struct platform_device *pdev)
 	del_timer_sync(&w90p910_ts->timer);
 	iounmap(w90p910_ts->ts_reg);
 
+	clk_put(w90p910_ts->clk);
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, res->end - res->start + 1);
+	release_mem_region(res->start, resource_size(res));
 
 	input_unregister_device(w90p910_ts->input);
 	kfree(w90p910_ts);
diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c
index 2f33a016764..56dc35c94bb 100644
--- a/drivers/input/touchscreen/wacom_w8001.c
+++ b/drivers/input/touchscreen/wacom_w8001.c
@@ -25,18 +25,16 @@ MODULE_AUTHOR("Jaya Kumar <jayakumar.lkml@gmail.com>");
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
 
-/*
- * Definitions & global arrays.
- */
-
 #define W8001_MAX_LENGTH	11
-#define W8001_PACKET_LEN	11
-#define W8001_LEAD_MASK 0x80
-#define W8001_LEAD_BYTE 0x80
-#define W8001_TAB_MASK 0x40
-#define W8001_TAB_BYTE 0x40
+#define W8001_LEAD_MASK		0x80
+#define W8001_LEAD_BYTE		0x80
+#define W8001_TAB_MASK		0x40
+#define W8001_TAB_BYTE		0x40
 
-#define W8001_QUERY_PACKET 0x20
+#define W8001_QUERY_PACKET	0x20
+
+#define W8001_CMD_START		'1'
+#define W8001_CMD_QUERY		'*'
 
 struct w8001_coord {
 	u8 rdy;
@@ -57,18 +55,19 @@ struct w8001_coord {
 struct w8001 {
 	struct input_dev *dev;
 	struct serio *serio;
-	struct mutex cmd_mutex;
 	struct completion cmd_done;
 	int id;
 	int idx;
-	unsigned char expected_packet;
+	unsigned char response_type;
+	unsigned char response[W8001_MAX_LENGTH];
 	unsigned char data[W8001_MAX_LENGTH];
-	unsigned char response[W8001_PACKET_LEN];
 	char phys[32];
 };
 
-static int parse_data(u8 *data, struct w8001_coord *coord)
+static void parse_data(u8 *data, struct w8001_coord *coord)
 {
+	memset(coord, 0, sizeof(*coord));
+
 	coord->rdy = data[0] & 0x20;
 	coord->tsw = data[0] & 0x01;
 	coord->f1 = data[0] & 0x02;
@@ -87,15 +86,15 @@ static int parse_data(u8 *data, struct w8001_coord *coord)
 
 	coord->tilt_x = data[7] & 0x7F;
 	coord->tilt_y = data[8] & 0x7F;
-
-	return 0;
 }
 
-static void w8001_process_data(struct w8001 *w8001, unsigned char data)
+static irqreturn_t w8001_interrupt(struct serio *serio,
+				   unsigned char data, unsigned int flags)
 {
+	struct w8001 *w8001 = serio_get_drvdata(serio);
 	struct input_dev *dev = w8001->dev;
-	u8 tmp;
 	struct w8001_coord coord;
+	unsigned char tmp;
 
 	w8001->data[w8001->idx] = data;
 	switch (w8001->idx++) {
@@ -105,12 +104,13 @@ static void w8001_process_data(struct w8001 *w8001, unsigned char data)
 			w8001->idx = 0;
 		}
 		break;
+
 	case 8:
 		tmp = w8001->data[0] & W8001_TAB_MASK;
 		if (unlikely(tmp == W8001_TAB_BYTE))
 			break;
+
 		w8001->idx = 0;
-		memset(&coord, 0, sizeof(coord));
 		parse_data(w8001->data, &coord);
 		input_report_abs(dev, ABS_X, coord.x);
 		input_report_abs(dev, ABS_Y, coord.y);
@@ -118,86 +118,48 @@ static void w8001_process_data(struct w8001 *w8001, unsigned char data)
 		input_report_key(dev, BTN_TOUCH, coord.tsw);
 		input_sync(dev);
 		break;
+
 	case 10:
 		w8001->idx = 0;
-		memcpy(w8001->response, &w8001->data, W8001_PACKET_LEN);
-		w8001->expected_packet = W8001_QUERY_PACKET;
+		memcpy(w8001->response, w8001->data, W8001_MAX_LENGTH);
+		w8001->response_type = W8001_QUERY_PACKET;
 		complete(&w8001->cmd_done);
 		break;
 	}
-}
-
-
-static irqreturn_t w8001_interrupt(struct serio *serio,
-		unsigned char data, unsigned int flags)
-{
-	struct w8001 *w8001 = serio_get_drvdata(serio);
-
-	w8001_process_data(w8001, data);
 
 	return IRQ_HANDLED;
 }
 
-static int w8001_async_command(struct w8001 *w8001, unsigned char *packet,
-					int len)
-{
-	int rc = -1;
-	int i;
-
-	mutex_lock(&w8001->cmd_mutex);
-
-	for (i = 0; i < len; i++) {
-		if (serio_write(w8001->serio, packet[i]))
-			goto out;
-	}
-	rc = 0;
-
-out:
-	mutex_unlock(&w8001->cmd_mutex);
-	return rc;
-}
-
-static int w8001_command(struct w8001 *w8001, unsigned char *packet, int len)
+static int w8001_command(struct w8001 *w8001, unsigned char command,
+			 bool wait_response)
 {
-	int rc = -1;
-	int i;
+	int rc;
 
-	mutex_lock(&w8001->cmd_mutex);
-
-	serio_pause_rx(w8001->serio);
+	w8001->response_type = 0;
 	init_completion(&w8001->cmd_done);
-	serio_continue_rx(w8001->serio);
-
-	for (i = 0; i < len; i++) {
-		if (serio_write(w8001->serio, packet[i]))
-			goto out;
-	}
 
-	wait_for_completion_timeout(&w8001->cmd_done, HZ);
+	rc = serio_write(w8001->serio, command);
+	if (rc == 0 && wait_response) {
 
-	if (w8001->expected_packet == W8001_QUERY_PACKET) {
-		/* We are back in reporting mode, the query was ACKed */
-		memcpy(packet, w8001->response, W8001_PACKET_LEN);
-		rc = 0;
+		wait_for_completion_timeout(&w8001->cmd_done, HZ);
+		if (w8001->response_type != W8001_QUERY_PACKET)
+			rc = -EIO;
 	}
 
-out:
-	mutex_unlock(&w8001->cmd_mutex);
 	return rc;
 }
 
 static int w8001_setup(struct w8001 *w8001)
 {
-	struct w8001_coord coord;
 	struct input_dev *dev = w8001->dev;
-	unsigned char start[1] = { '1' };
-	unsigned char query[11] = { '*' };
+	struct w8001_coord coord;
+	int error;
 
-	if (w8001_command(w8001, query, 1))
-		return -1;
+	error = w8001_command(w8001, W8001_CMD_QUERY, true);
+	if (error)
+		return error;
 
-	memset(&coord, 0, sizeof(coord));
-	parse_data(query, &coord);
+	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);
@@ -205,10 +167,7 @@ static int w8001_setup(struct w8001 *w8001)
 	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);
 
-	if (w8001_async_command(w8001, start, 1))
-		return -1;
-
-	return 0;
+	return w8001_command(w8001, W8001_CMD_START, false);
 }
 
 /*
@@ -249,7 +208,6 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
 	w8001->serio = serio;
 	w8001->id = serio->id.id;
 	w8001->dev = input_dev;
-	mutex_init(&w8001->cmd_mutex);
 	init_completion(&w8001->cmd_done);
 	snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys);
 
@@ -269,7 +227,8 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
 	if (err)
 		goto fail2;
 
-	if (w8001_setup(w8001))
+	err = w8001_setup(w8001);
+	if (err)
 		goto fail3;
 
 	err = input_register_device(w8001->dev);
diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index 2957d48e004..252eb11fe9d 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -204,7 +204,7 @@ void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio,
 	else
 		reg &= ~gpio;
 
-	if (wm->id == WM9712_ID2)
+	if (wm->id == WM9712_ID2 && wm->variant != WM97xx_WM1613)
 		wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg << 1);
 	else
 		wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg);
@@ -307,7 +307,7 @@ static void wm97xx_pen_irq_worker(struct work_struct *work)
 					 WM97XX_GPIO_13);
 		}
 
-		if (wm->id == WM9712_ID2)
+		if (wm->id == WM9712_ID2 && wm->variant != WM97xx_WM1613)
 			wm97xx_reg_write(wm, AC97_GPIO_STATUS, (status &
 						~WM97XX_GPIO_13) << 1);
 		else
@@ -582,6 +582,8 @@ static int wm97xx_probe(struct device *dev)
 
 	wm->id = wm97xx_reg_read(wm, AC97_VENDOR_ID2);
 
+	wm->variant = WM97xx_GENERIC;
+
 	dev_info(wm->dev, "detected a wm97%02x codec\n", wm->id & 0xff);
 
 	switch (wm->id & 0xff) {