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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 09:22:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 09:22:36 -0700
commit6f130478e24d810078c3f0ee292bcc4ec034dcce (patch)
tree1c782ccceaf998e9e23862094588c125ee6f38af /drivers/input
parent6f128fa344833bf8bf076a51d14401661c146470 (diff)
parent75f2ba8f0006440e720e47ae14c917e07c452d72 (diff)
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (55 commits) regulator: Voltage count for AB3100 mfd: Convert WM8350 to use request_threaded_irq() mfd: Update MAINTAINERS patterns for WM831x mfd: Fix twl4030-power warnings regulator: AB3100 support rtc: AB3100 RTC support mfd: Fix ab3100-otp build failure mfd: OMAP: Board-specifc twl4030 DPS scripts for RX51 board mfd: Print warning for twl4030 out-of-order script loading mfd: Add support for TWL4030/5030 dynamic power switching mfd: AB3100 OTP readout regulator: Add Freescale MC13783 driver mfd: Add Freescale MC13783 driver mfd: AB3100 disable irq nosync mfd: AB3100 alter default setting mfd: AB3100 propagate error mfd: AB3100 accessor function cleanups rtc: Add support for RTCs on Wolfson WM831x devices regulator: get pcap data from the parent device input: PCAP2 misc input driver ...
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/misc/Kconfig20
-rw-r--r--drivers/input/misc/Makefile3
-rw-r--r--drivers/input/misc/pcap_keys.c144
-rw-r--r--drivers/input/misc/wm831x-on.c163
-rw-r--r--drivers/input/touchscreen/Kconfig9
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/pcap_ts.c271
7 files changed, 611 insertions, 0 deletions
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index cbe21bc96b5..1a50be379cb 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 79c1e9a5ea3..bf4db626c31 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 00000000000..7ea969347ca
--- /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 00000000000..ba4f5dd7c60
--- /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 87a1ae63bcc..ab02d72afbf 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 3e1c5e0b952..4599bf7ad81 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 00000000000..67fcd33595d
--- /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");