9 files changed, 623 insertions, 12 deletions

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 7c237e6ac711..851791d955f3 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1144,7 +1144,7 @@ static struct attribute_group input_dev_caps_attr_group = {
         .attrs  = input_dev_caps_attrs,
 };
 
-static struct attribute_group *input_dev_attr_groups[] = {
+static const struct attribute_group *input_dev_attr_groups[] = {
         &input_dev_attr_group,
         &input_dev_id_attr_group,
         &input_dev_caps_attr_group,
diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c
index 87ec7b18ac69..bba85add35a3 100644
--- a/drivers/input/keyboard/omap-keypad.c
+++ b/drivers/input/keyboard/omap-keypad.c
@@ -116,7 +116,7 @@ static irqreturn_t omap_kp_interrupt(int irq, void *dev_id)
                 }
         } else
                 /* disable keyboard interrupt and schedule for handling */
-                omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
+                omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
 
         tasklet_schedule(&kp_tasklet);
 
@@ -143,20 +143,20 @@ static void omap_kp_scan_keypad(struct omap_kp *omap_kp, unsigned char *state)
 
         } else {
                 /* disable keyboard interrupt and schedule for handling */
-                omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
+                omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
 
                 /* read the keypad status */
-                omap_writew(0xff, OMAP_MPUIO_BASE + OMAP_MPUIO_KBC);
+                omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
                 for (col = 0; col < omap_kp->cols; col++) {
                         omap_writew(~(1 << col) & 0xff,
-                                    OMAP_MPUIO_BASE + OMAP_MPUIO_KBC);
+                                    OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
 
                         udelay(omap_kp->delay);
 
-                        state[col] = ~omap_readw(OMAP_MPUIO_BASE +
+                        state[col] = ~omap_readw(OMAP1_MPUIO_BASE +
                                                  OMAP_MPUIO_KBR_LATCH) & 0xff;
                 }
-                omap_writew(0x00, OMAP_MPUIO_BASE + OMAP_MPUIO_KBC);
+                omap_writew(0x00, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
                 udelay(2);
         }
 }
@@ -234,7 +234,7 @@ static void omap_kp_tasklet(unsigned long data)
                         for (i = 0; i < omap_kp_data->rows; i++)
                                 enable_irq(gpio_to_irq(row_gpios[i]));
                 } else {
-                        omap_writew(0, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
+                        omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
                         kp_cur_group = -1;
                 }
         }
@@ -317,7 +317,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev)
 
         /* Disable the interrupt for the MPUIO keyboard */
         if (!cpu_is_omap24xx())
-                omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
+                omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
 
         keymap = pdata->keymap;
 
@@ -391,7 +391,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev)
         }
 
         if (pdata->dbounce)
-                omap_writew(0xff, OMAP_MPUIO_BASE + OMAP_MPUIO_GPIO_DEBOUNCING);
+                omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_GPIO_DEBOUNCING);
 
         /* scan current status and enable interrupt */
         omap_kp_scan_keypad(omap_kp, keypad_state);
@@ -402,7 +402,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev)
                                         "omap-keypad", omap_kp) < 0)
                                 goto err4;
                 }
-                omap_writew(0, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
+                omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
         } else {
                 for (irq_idx = 0; irq_idx < omap_kp->rows; irq_idx++) {
                         if (request_irq(gpio_to_irq(row_gpios[irq_idx]),
@@ -449,7 +449,7 @@ static int __devexit omap_kp_remove(struct platform_device *pdev)
                         free_irq(gpio_to_irq(row_gpios[i]), 0);
                 }
         } else {
-                omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
+                omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
                 free_irq(omap_kp->irq, 0);
         }
 
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index cbe21bc96b52..1a50be379cbc 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -279,4 +279,24 @@ config INPUT_BFIN_ROTARY
           To compile this driver as a module, choose M here: the
           module will be called bfin-rotary.
 
+config INPUT_WM831X_ON
+        tristate "WM831X ON pin"
+        depends on MFD_WM831X
+        help
+          Support the ON pin of WM831X PMICs as an input device
+          reporting power button status.
+
+          To compile this driver as a module, choose M here: the module
+          will be called wm831x_on.
+
+config INPUT_PCAP
+        tristate "Motorola EZX PCAP misc input events"
+        depends on EZX_PCAP
+        help
+          Say Y here if you want to use Power key and Headphone button
+          on Motorola EZX phones.
+
+          To compile this driver as a module, choose M here: the
+          module will be called pcap_keys.
+
 endif
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 79c1e9a5ea31..bf4db626c313 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_HP_SDC_RTC)		+= hp_sdc_rtc.o
 obj-$(CONFIG_INPUT_IXP4XX_BEEPER)       += ixp4xx-beeper.o
 obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)      += keyspan_remote.o
 obj-$(CONFIG_INPUT_M68K_BEEP)           += m68kspkr.o
+obj-$(CONFIG_INPUT_PCAP)                += pcap_keys.o
 obj-$(CONFIG_INPUT_PCF50633_PMU)        += pcf50633-input.o
 obj-$(CONFIG_INPUT_PCSPKR)              += pcspkr.o
 obj-$(CONFIG_INPUT_POWERMATE)           += powermate.o
@@ -26,4 +27,6 @@ obj-$(CONFIG_INPUT_SPARCSPKR)		+= sparcspkr.o
 obj-$(CONFIG_INPUT_TWL4030_PWRBUTTON)   += twl4030-pwrbutton.o
 obj-$(CONFIG_INPUT_UINPUT)              += uinput.o
 obj-$(CONFIG_INPUT_WISTRON_BTNS)        += wistron_btns.o
+obj-$(CONFIG_INPUT_WM831X_ON)           += wm831x-on.o
 obj-$(CONFIG_INPUT_YEALINK)             += yealink.o
+
diff --git a/drivers/input/misc/pcap_keys.c b/drivers/input/misc/pcap_keys.c
new file mode 100644
index 000000000000..7ea969347ca9
--- /dev/null
+++ b/drivers/input/misc/pcap_keys.c
@@ -0,0 +1,144 @@
+/*
+ *  Input driver for PCAP events:
+ *   * Power key
+ *   * Headphone button
+ *
+ *  Copyright (c) 2008,2009 Ilya Petrov <ilya.muromec@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/mfd/ezx-pcap.h>
+
+struct pcap_keys {
+        struct pcap_chip *pcap;
+        struct input_dev *input;
+};
+
+/* PCAP2 interrupts us on keypress */
+static irqreturn_t pcap_keys_handler(int irq, void *_pcap_keys)
+{
+        struct pcap_keys *pcap_keys = _pcap_keys;
+        int pirq = irq_to_pcap(pcap_keys->pcap, irq);
+        u32 pstat;
+
+        ezx_pcap_read(pcap_keys->pcap, PCAP_REG_PSTAT, &pstat);
+        pstat &= 1 << pirq;
+
+        switch (pirq) {
+        case PCAP_IRQ_ONOFF:
+                input_report_key(pcap_keys->input, KEY_POWER, !pstat);
+                break;
+        case PCAP_IRQ_MIC:
+                input_report_key(pcap_keys->input, KEY_HP, !pstat);
+                break;
+        }
+
+        input_sync(pcap_keys->input);
+
+        return IRQ_HANDLED;
+}
+
+static int __devinit pcap_keys_probe(struct platform_device *pdev)
+{
+        int err = -ENOMEM;
+        struct pcap_keys *pcap_keys;
+        struct input_dev *input_dev;
+
+        pcap_keys = kmalloc(sizeof(struct pcap_keys), GFP_KERNEL);
+        if (!pcap_keys)
+                return err;
+
+        pcap_keys->pcap = dev_get_drvdata(pdev->dev.parent);
+
+        input_dev = input_allocate_device();
+        if (!input_dev)
+                goto fail;
+
+        pcap_keys->input = input_dev;
+
+        platform_set_drvdata(pdev, pcap_keys);
+        input_dev->name = pdev->name;
+        input_dev->phys = "pcap-keys/input0";
+        input_dev->id.bustype = BUS_HOST;
+        input_dev->dev.parent = &pdev->dev;
+
+        __set_bit(EV_KEY, input_dev->evbit);
+        __set_bit(KEY_POWER, input_dev->keybit);
+        __set_bit(KEY_HP, input_dev->keybit);
+
+        err = input_register_device(input_dev);
+        if (err)
+                goto fail_allocate;
+
+        err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF),
+                        pcap_keys_handler, 0, "Power key", pcap_keys);
+        if (err)
+                goto fail_register;
+
+        err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC),
+                        pcap_keys_handler, 0, "Headphone button", pcap_keys);
+        if (err)
+                goto fail_pwrkey;
+
+        return 0;
+
+fail_pwrkey:
+        free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys);
+fail_register:
+        input_unregister_device(input_dev);
+        goto fail;
+fail_allocate:
+        input_free_device(input_dev);
+fail:
+        kfree(pcap_keys);
+        return err;
+}
+
+static int __devexit pcap_keys_remove(struct platform_device *pdev)
+{
+        struct pcap_keys *pcap_keys = platform_get_drvdata(pdev);
+
+        free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys);
+        free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC), pcap_keys);
+
+        input_unregister_device(pcap_keys->input);
+        kfree(pcap_keys);
+
+        return 0;
+}
+
+static struct platform_driver pcap_keys_device_driver = {
+        .probe          = pcap_keys_probe,
+        .remove         = __devexit_p(pcap_keys_remove),
+        .driver         = {
+                .name   = "pcap-keys",
+                .owner  = THIS_MODULE,
+        }
+};
+
+static int __init pcap_keys_init(void)
+{
+        return platform_driver_register(&pcap_keys_device_driver);
+};
+
+static void __exit pcap_keys_exit(void)
+{
+        platform_driver_unregister(&pcap_keys_device_driver);
+};
+
+module_init(pcap_keys_init);
+module_exit(pcap_keys_exit);
+
+MODULE_DESCRIPTION("Motorola PCAP2 input events driver");
+MODULE_AUTHOR("Ilya Petrov <ilya.muromec@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcap_keys");
diff --git a/drivers/input/misc/wm831x-on.c b/drivers/input/misc/wm831x-on.c
new file mode 100644
index 000000000000..ba4f5dd7c60e
--- /dev/null
+++ b/drivers/input/misc/wm831x-on.c
@@ -0,0 +1,163 @@
+/**
+ * wm831x-on.c - WM831X ON pin driver
+ *
+ * Copyright (C) 2009 Wolfson Microelectronics plc
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+#include <linux/mfd/wm831x/core.h>
+
+struct wm831x_on {
+        struct input_dev *dev;
+        struct delayed_work work;
+        struct wm831x *wm831x;
+};
+
+/*
+ * The chip gives us an interrupt when the ON pin is asserted but we
+ * then need to poll to see when the pin is deasserted.
+ */
+static void wm831x_poll_on(struct work_struct *work)
+{
+        struct wm831x_on *wm831x_on = container_of(work, struct wm831x_on,
+                                                   work.work);
+        struct wm831x *wm831x = wm831x_on->wm831x;
+        int poll, ret;
+
+        ret = wm831x_reg_read(wm831x, WM831X_ON_PIN_CONTROL);
+        if (ret >= 0) {
+                poll = !(ret & WM831X_ON_PIN_STS);
+
+                input_report_key(wm831x_on->dev, KEY_POWER, poll);
+                input_sync(wm831x_on->dev);
+        } else {
+                dev_err(wm831x->dev, "Failed to read ON status: %d\n", ret);
+                poll = 1;
+        }
+
+        if (poll)
+                schedule_delayed_work(&wm831x_on->work, 100);
+}
+
+static irqreturn_t wm831x_on_irq(int irq, void *data)
+{
+        struct wm831x_on *wm831x_on = data;
+
+        schedule_delayed_work(&wm831x_on->work, 0);
+
+        return IRQ_HANDLED;
+}
+
+static int __devinit wm831x_on_probe(struct platform_device *pdev)
+{
+        struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+        struct wm831x_on *wm831x_on;
+        int irq = platform_get_irq(pdev, 0);
+        int ret;
+
+        wm831x_on = kzalloc(sizeof(struct wm831x_on), GFP_KERNEL);
+        if (!wm831x_on) {
+                dev_err(&pdev->dev, "Can't allocate data\n");
+                return -ENOMEM;
+        }
+
+        wm831x_on->wm831x = wm831x;
+        INIT_DELAYED_WORK(&wm831x_on->work, wm831x_poll_on);
+
+        wm831x_on->dev = input_allocate_device();
+        if (!wm831x_on->dev) {
+                dev_err(&pdev->dev, "Can't allocate input dev\n");
+                ret = -ENOMEM;
+                goto err;
+        }
+
+        wm831x_on->dev->evbit[0] = BIT_MASK(EV_KEY);
+        wm831x_on->dev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
+        wm831x_on->dev->name = "wm831x_on";
+        wm831x_on->dev->phys = "wm831x_on/input0";
+        wm831x_on->dev->dev.parent = &pdev->dev;
+
+        ret = wm831x_request_irq(wm831x, irq, wm831x_on_irq,
+                                 IRQF_TRIGGER_RISING, "wm831x_on", wm831x_on);
+        if (ret < 0) {
+                dev_err(&pdev->dev, "Unable to request IRQ: %d\n", ret);
+                goto err_input_dev;
+        }
+        ret = input_register_device(wm831x_on->dev);
+        if (ret) {
+                dev_dbg(&pdev->dev, "Can't register input device: %d\n", ret);
+                goto err_irq;
+        }
+
+        platform_set_drvdata(pdev, wm831x_on);
+
+        return 0;
+
+err_irq:
+        wm831x_free_irq(wm831x, irq, NULL);
+err_input_dev:
+        input_free_device(wm831x_on->dev);
+err:
+        kfree(wm831x_on);
+        return ret;
+}
+
+static int __devexit wm831x_on_remove(struct platform_device *pdev)
+{
+        struct wm831x_on *wm831x_on = platform_get_drvdata(pdev);
+        int irq = platform_get_irq(pdev, 0);
+
+        wm831x_free_irq(wm831x_on->wm831x, irq, wm831x_on);
+        cancel_delayed_work_sync(&wm831x_on->work);
+        input_unregister_device(wm831x_on->dev);
+        kfree(wm831x_on);
+
+        return 0;
+}
+
+static struct platform_driver wm831x_on_driver = {
+        .probe          = wm831x_on_probe,
+        .remove         = __devexit_p(wm831x_on_remove),
+        .driver         = {
+                .name   = "wm831x-on",
+                .owner  = THIS_MODULE,
+        },
+};
+
+static int __init wm831x_on_init(void)
+{
+        return platform_driver_register(&wm831x_on_driver);
+}
+module_init(wm831x_on_init);
+
+static void __exit wm831x_on_exit(void)
+{
+        platform_driver_unregister(&wm831x_on_driver);
+}
+module_exit(wm831x_on_exit);
+
+MODULE_ALIAS("platform:wm831x-on");
+MODULE_DESCRIPTION("WM831x ON pin");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 87a1ae63bcc4..ab02d72afbf3 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -510,4 +510,13 @@ config TOUCHSCREEN_W90X900
           To compile this driver as a module, choose M here: the
           module will be called w90p910_ts.
 
+config TOUCHSCREEN_PCAP
+        tristate "Motorola PCAP touchscreen"
+        depends on EZX_PCAP
+        help
+          Say Y here if you have a Motorola EZX telephone and
+          want to enable support for the built-in touchscreen.
+
+          To compile this driver as a module, choose M here: the
+          module will be called pcap_ts.
 endif
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 3e1c5e0b952f..4599bf7ad819 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -40,3 +40,4 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ATMEL)	+= atmel-wm97xx.o
 obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE)      += mainstone-wm97xx.o
 obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE)       += zylonite-wm97xx.o
 obj-$(CONFIG_TOUCHSCREEN_W90X900)       += w90p910_ts.o
+obj-$(CONFIG_TOUCHSCREEN_PCAP)          += pcap_ts.o
diff --git a/drivers/input/touchscreen/pcap_ts.c b/drivers/input/touchscreen/pcap_ts.c
new file mode 100644
index 000000000000..67fcd33595de
--- /dev/null
+++ b/drivers/input/touchscreen/pcap_ts.c
@@ -0,0 +1,271 @@
+/*
+ * Driver for Motorola PCAP2 touchscreen as found in the EZX phone platform.
+ *
+ *  Copyright (C) 2006 Harald Welte <laforge@openezx.org>
+ *  Copyright (C) 2009 Daniel Ribeiro <drwyrm@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/pm.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/mfd/ezx-pcap.h>
+
+struct pcap_ts {
+        struct pcap_chip *pcap;
+        struct input_dev *input;
+        struct delayed_work work;
+        u16 x, y;
+        u16 pressure;
+        u8 read_state;
+};
+
+#define SAMPLE_DELAY    20 /* msecs */
+
+#define X_AXIS_MIN      0
+#define X_AXIS_MAX      1023
+#define Y_AXIS_MAX      X_AXIS_MAX
+#define Y_AXIS_MIN      X_AXIS_MIN
+#define PRESSURE_MAX    X_AXIS_MAX
+#define PRESSURE_MIN    X_AXIS_MIN
+
+static void pcap_ts_read_xy(void *data, u16 res[2])
+{
+        struct pcap_ts *pcap_ts = data;
+
+        switch (pcap_ts->read_state) {
+        case PCAP_ADC_TS_M_PRESSURE:
+                /* pressure reading is unreliable */
+                if (res[0] > PRESSURE_MIN && res[0] < PRESSURE_MAX)
+                        pcap_ts->pressure = res[0];
+                pcap_ts->read_state = PCAP_ADC_TS_M_XY;
+                schedule_delayed_work(&pcap_ts->work, 0);
+                break;
+        case PCAP_ADC_TS_M_XY:
+                pcap_ts->y = res[0];
+                pcap_ts->x = res[1];
+                if (pcap_ts->x <= X_AXIS_MIN || pcap_ts->x >= X_AXIS_MAX ||
+                    pcap_ts->y <= Y_AXIS_MIN || pcap_ts->y >= Y_AXIS_MAX) {
+                        /* pen has been released */
+                        input_report_abs(pcap_ts->input, ABS_PRESSURE, 0);
+                        input_report_key(pcap_ts->input, BTN_TOUCH, 0);
+
+                        pcap_ts->read_state = PCAP_ADC_TS_M_STANDBY;
+                        schedule_delayed_work(&pcap_ts->work, 0);
+                } else {
+                        /* pen is touching the screen */
+                        input_report_abs(pcap_ts->input, ABS_X, pcap_ts->x);
+                        input_report_abs(pcap_ts->input, ABS_Y, pcap_ts->y);
+                        input_report_key(pcap_ts->input, BTN_TOUCH, 1);
+                        input_report_abs(pcap_ts->input, ABS_PRESSURE,
+                                                pcap_ts->pressure);
+
+                        /* switch back to pressure read mode */
+                        pcap_ts->read_state = PCAP_ADC_TS_M_PRESSURE;
+                        schedule_delayed_work(&pcap_ts->work,
+                                        msecs_to_jiffies(SAMPLE_DELAY));
+                }
+                input_sync(pcap_ts->input);
+                break;
+        default:
+                dev_warn(&pcap_ts->input->dev,
+                                "pcap_ts: Warning, unhandled read_state %d\n",
+                                pcap_ts->read_state);
+                break;
+        }
+}
+
+static void pcap_ts_work(struct work_struct *work)
+{
+        struct delayed_work *dw = container_of(work, struct delayed_work, work);
+        struct pcap_ts *pcap_ts = container_of(dw, struct pcap_ts, work);
+        u8 ch[2];
+
+        pcap_set_ts_bits(pcap_ts->pcap,
+                        pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT);
+
+        if (pcap_ts->read_state == PCAP_ADC_TS_M_STANDBY)
+                return;
+
+        /* start adc conversion */
+        ch[0] = PCAP_ADC_CH_TS_X1;
+        ch[1] = PCAP_ADC_CH_TS_Y1;
+        pcap_adc_async(pcap_ts->pcap, PCAP_ADC_BANK_1, 0, ch,
+                                                pcap_ts_read_xy, pcap_ts);
+}
+
+static irqreturn_t pcap_ts_event_touch(int pirq, void *data)
+{
+        struct pcap_ts *pcap_ts = data;
+
+        if (pcap_ts->read_state == PCAP_ADC_TS_M_STANDBY) {
+                pcap_ts->read_state = PCAP_ADC_TS_M_PRESSURE;
+                schedule_delayed_work(&pcap_ts->work, 0);
+        }
+        return IRQ_HANDLED;
+}
+
+static int pcap_ts_open(struct input_dev *dev)
+{
+        struct pcap_ts *pcap_ts = input_get_drvdata(dev);
+
+        pcap_ts->read_state = PCAP_ADC_TS_M_STANDBY;
+        schedule_delayed_work(&pcap_ts->work, 0);
+
+        return 0;
+}
+
+static void pcap_ts_close(struct input_dev *dev)
+{
+        struct pcap_ts *pcap_ts = input_get_drvdata(dev);
+
+        cancel_delayed_work_sync(&pcap_ts->work);
+
+        pcap_ts->read_state = PCAP_ADC_TS_M_NONTS;
+        pcap_set_ts_bits(pcap_ts->pcap,
+                                pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT);
+}
+
+static int __devinit pcap_ts_probe(struct platform_device *pdev)
+{
+        struct input_dev *input_dev;
+        struct pcap_ts *pcap_ts;
+        int err = -ENOMEM;
+
+        pcap_ts = kzalloc(sizeof(*pcap_ts), GFP_KERNEL);
+        if (!pcap_ts)
+                return err;
+
+        pcap_ts->pcap = dev_get_drvdata(pdev->dev.parent);
+        platform_set_drvdata(pdev, pcap_ts);
+
+        input_dev = input_allocate_device();
+        if (!input_dev)
+                goto fail;
+
+        INIT_DELAYED_WORK(&pcap_ts->work, pcap_ts_work);
+
+        pcap_ts->read_state = PCAP_ADC_TS_M_NONTS;
+        pcap_set_ts_bits(pcap_ts->pcap,
+                                pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT);
+
+        pcap_ts->input = input_dev;
+        input_set_drvdata(input_dev, pcap_ts);
+
+        input_dev->name = "pcap-touchscreen";
+        input_dev->phys = "pcap_ts/input0";
+        input_dev->id.bustype = BUS_HOST;
+        input_dev->id.vendor = 0x0001;
+        input_dev->id.product = 0x0002;
+        input_dev->id.version = 0x0100;
+        input_dev->dev.parent = &pdev->dev;
+        input_dev->open = pcap_ts_open;
+        input_dev->close = pcap_ts_close;
+
+        input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+        input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+        input_set_abs_params(input_dev, ABS_X, X_AXIS_MIN, X_AXIS_MAX, 0, 0);
+        input_set_abs_params(input_dev, ABS_Y, Y_AXIS_MIN, Y_AXIS_MAX, 0, 0);
+        input_set_abs_params(input_dev, ABS_PRESSURE, PRESSURE_MIN,
+                             PRESSURE_MAX, 0, 0);
+
+        err = input_register_device(pcap_ts->input);
+        if (err)
+                goto fail_allocate;
+
+        err = request_irq(pcap_to_irq(pcap_ts->pcap, PCAP_IRQ_TS),
+                        pcap_ts_event_touch, 0, "Touch Screen", pcap_ts);
+        if (err)
+                goto fail_register;
+
+        return 0;
+
+fail_register:
+        input_unregister_device(input_dev);
+        goto fail;
+fail_allocate:
+        input_free_device(input_dev);
+fail:
+        kfree(pcap_ts);
+
+        return err;
+}
+
+static int __devexit pcap_ts_remove(struct platform_device *pdev)
+{
+        struct pcap_ts *pcap_ts = platform_get_drvdata(pdev);
+
+        free_irq(pcap_to_irq(pcap_ts->pcap, PCAP_IRQ_TS), pcap_ts);
+        cancel_delayed_work_sync(&pcap_ts->work);
+
+        input_unregister_device(pcap_ts->input);
+
+        kfree(pcap_ts);
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int pcap_ts_suspend(struct device *dev)
+{
+        struct pcap_ts *pcap_ts = dev_get_drvdata(dev);
+
+        pcap_set_ts_bits(pcap_ts->pcap, PCAP_ADC_TS_REF_LOWPWR);
+        return 0;
+}
+
+static int pcap_ts_resume(struct device *dev)
+{
+        struct pcap_ts *pcap_ts = dev_get_drvdata(dev);
+
+        pcap_set_ts_bits(pcap_ts->pcap,
+                                pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT);
+        return 0;
+}
+
+static struct dev_pm_ops pcap_ts_pm_ops = {
+        .suspend        = pcap_ts_suspend,
+        .resume         = pcap_ts_resume,
+};
+#define PCAP_TS_PM_OPS (&pcap_ts_pm_ops)
+#else
+#define PCAP_TS_PM_OPS NULL
+#endif
+
+static struct platform_driver pcap_ts_driver = {
+        .probe          = pcap_ts_probe,
+        .remove         = __devexit_p(pcap_ts_remove),
+        .driver         = {
+                .name   = "pcap-ts",
+                .owner  = THIS_MODULE,
+                .pm     = PCAP_TS_PM_OPS,
+        },
+};
+
+static int __init pcap_ts_init(void)
+{
+        return platform_driver_register(&pcap_ts_driver);
+}
+
+static void __exit pcap_ts_exit(void)
+{
+        platform_driver_unregister(&pcap_ts_driver);
+}
+
+module_init(pcap_ts_init);
+module_exit(pcap_ts_exit);
+
+MODULE_DESCRIPTION("Motorola PCAP2 touchscreen driver");
+MODULE_AUTHOR("Daniel Ribeiro / Harald Welte");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcap_ts");