11 files changed, 362 insertions, 261 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 72e2712c7e2a..87a1ae63bcc4 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 055969e8be13..9c7fce4d74d0 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 3ab92222a525..9029bd3f34e5 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 4d3139e2099d..b4d7f63deff1 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 4cc047a5116e..8fc3b08deb3b 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 880f58c6a7c4..7ef0d1420d3c 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 3a7a58222f83..095f84b1f56e 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 fb7cb9bdfbd5..68ece5801a58 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 6071f5882572..6ccbdbbf33fe 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);
@@ -326,7 +326,7 @@ static struct platform_driver w90x900ts_driver = {
         .probe          = w90x900ts_probe,
         .remove         = __devexit_p(w90x900ts_remove),
         .driver         = {
-                .name   = "w90x900-ts",
+                .name   = "nuc900-ts",
                 .owner  = THIS_MODULE,
         },
 };
@@ -347,4 +347,4 @@ module_exit(w90x900ts_exit);
 MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
 MODULE_DESCRIPTION("w90p910 touch screen driver!");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:w90p910-ts");
+MODULE_ALIAS("platform:nuc900-ts");
diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c
index 2f33a0167644..56dc35c94bb1 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 2957d48e0045..252eb11fe9db 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) {