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Diffstat (limited to 'ANDROID_3.4.5/drivers/input/touchscreen/eeti_ts.c')
-rw-r--r--ANDROID_3.4.5/drivers/input/touchscreen/eeti_ts.c327
1 files changed, 0 insertions, 327 deletions
diff --git a/ANDROID_3.4.5/drivers/input/touchscreen/eeti_ts.c b/ANDROID_3.4.5/drivers/input/touchscreen/eeti_ts.c
deleted file mode 100644
index 503c7096..00000000
--- a/ANDROID_3.4.5/drivers/input/touchscreen/eeti_ts.c
+++ /dev/null
@@ -1,327 +0,0 @@
-/*
- * Touch Screen driver for EETI's I2C connected touch screen panels
- * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
- *
- * See EETI's software guide for the protocol specification:
- * http://home.eeti.com.tw/web20/eg/guide.htm
- *
- * Based on migor_ts.c
- * Copyright (c) 2008 Magnus Damm
- * Copyright (c) 2007 Ujjwal Pande <ujjwal@kenati.com>
- *
- * This file is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This file 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 library; 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/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/input.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/timer.h>
-#include <linux/gpio.h>
-#include <linux/input/eeti_ts.h>
-#include <linux/slab.h>
-
-static bool flip_x;
-module_param(flip_x, bool, 0644);
-MODULE_PARM_DESC(flip_x, "flip x coordinate");
-
-static bool flip_y;
-module_param(flip_y, bool, 0644);
-MODULE_PARM_DESC(flip_y, "flip y coordinate");
-
-struct eeti_ts_priv {
- struct i2c_client *client;
- struct input_dev *input;
- struct work_struct work;
- struct mutex mutex;
- int irq, irq_active_high;
-};
-
-#define EETI_TS_BITDEPTH (11)
-#define EETI_MAXVAL ((1 << (EETI_TS_BITDEPTH + 1)) - 1)
-
-#define REPORT_BIT_PRESSED (1 << 0)
-#define REPORT_BIT_AD0 (1 << 1)
-#define REPORT_BIT_AD1 (1 << 2)
-#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];
- unsigned int x, y, res, pressed, to = 100;
- struct eeti_ts_priv *priv =
- container_of(work, struct eeti_ts_priv, work);
-
- mutex_lock(&priv->mutex);
-
- while (eeti_ts_irq_active(priv) && --to)
- i2c_master_recv(priv->client, buf, sizeof(buf));
-
- if (!to) {
- dev_err(&priv->client->dev,
- "unable to clear IRQ - line stuck?\n");
- goto out;
- }
-
- /* drop non-report packets */
- if (!(buf[0] & 0x80))
- goto out;
-
- pressed = buf[0] & REPORT_BIT_PRESSED;
- res = REPORT_RES_BITS(buf[0] & (REPORT_BIT_AD0 | REPORT_BIT_AD1));
- x = buf[2] | (buf[1] << 8);
- y = buf[4] | (buf[3] << 8);
-
- /* fix the range to 11 bits */
- x >>= res - EETI_TS_BITDEPTH;
- y >>= res - EETI_TS_BITDEPTH;
-
- if (flip_x)
- x = EETI_MAXVAL - x;
-
- if (flip_y)
- y = EETI_MAXVAL - y;
-
- if (buf[0] & REPORT_BIT_HAS_PRESSURE)
- input_report_abs(priv->input, ABS_PRESSURE, buf[5]);
-
- input_report_abs(priv->input, ABS_X, x);
- input_report_abs(priv->input, ABS_Y, y);
- input_report_key(priv->input, BTN_TOUCH, !!pressed);
- input_sync(priv->input);
-
-out:
- mutex_unlock(&priv->mutex);
-}
-
-static irqreturn_t eeti_ts_isr(int irq, void *dev_id)
-{
- struct eeti_ts_priv *priv = dev_id;
-
- /* postpone I2C transactions as we are atomic */
- schedule_work(&priv->work);
-
- return IRQ_HANDLED;
-}
-
-static void eeti_ts_start(struct eeti_ts_priv *priv)
-{
- enable_irq(priv->irq);
-
- /* Read the events once to arm the IRQ */
- eeti_ts_read(&priv->work);
-}
-
-static void eeti_ts_stop(struct eeti_ts_priv *priv)
-{
- disable_irq(priv->irq);
- cancel_work_sync(&priv->work);
-}
-
-static int eeti_ts_open(struct input_dev *dev)
-{
- struct eeti_ts_priv *priv = input_get_drvdata(dev);
-
- eeti_ts_start(priv);
-
- return 0;
-}
-
-static void eeti_ts_close(struct input_dev *dev)
-{
- struct eeti_ts_priv *priv = input_get_drvdata(dev);
-
- eeti_ts_stop(priv);
-}
-
-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
- * to be no way of probing the presence of that device using I2C
- * commands. So we need to blindly believe it is there, and wait
- * for interrupts to occur.
- */
-
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv) {
- dev_err(&client->dev, "failed to allocate driver data\n");
- goto err0;
- }
-
- mutex_init(&priv->mutex);
- input = input_allocate_device();
-
- if (!input) {
- dev_err(&client->dev, "Failed to allocate input device.\n");
- goto err1;
- }
-
- input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
- input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
-
- input_set_abs_params(input, ABS_X, 0, EETI_MAXVAL, 0, 0);
- input_set_abs_params(input, ABS_Y, 0, EETI_MAXVAL, 0, 0);
- input_set_abs_params(input, ABS_PRESSURE, 0, 0xff, 0, 0);
-
- input->name = client->name;
- input->id.bustype = BUS_I2C;
- input->dev.parent = &client->dev;
- input->open = eeti_ts_open;
- input->close = eeti_ts_close;
-
- priv->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);
-
- err = input_register_device(input);
- if (err)
- goto err1;
-
- 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");
- goto err2;
- }
-
- /*
- * Disable the device for now. It will be enabled once the
- * input device is opened.
- */
- eeti_ts_stop(priv);
-
- device_init_wakeup(&client->dev, 0);
- return 0;
-
-err2:
- input_unregister_device(input);
- input = NULL; /* so we dont try to free it below */
-err1:
- input_free_device(input);
- kfree(priv);
-err0:
- return err;
-}
-
-static int __devexit eeti_ts_remove(struct i2c_client *client)
-{
- struct eeti_ts_priv *priv = i2c_get_clientdata(client);
-
- free_irq(priv->irq, priv);
- /*
- * eeti_ts_stop() leaves IRQ disabled. We need to re-enable it
- * so that device still works if we reload the driver.
- */
- enable_irq(priv->irq);
-
- input_unregister_device(priv->input);
- kfree(priv);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int eeti_ts_suspend(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct eeti_ts_priv *priv = i2c_get_clientdata(client);
- struct input_dev *input_dev = priv->input;
-
- mutex_lock(&input_dev->mutex);
-
- if (input_dev->users)
- eeti_ts_stop(priv);
-
- mutex_unlock(&input_dev->mutex);
-
- if (device_may_wakeup(&client->dev))
- enable_irq_wake(priv->irq);
-
- return 0;
-}
-
-static int eeti_ts_resume(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct eeti_ts_priv *priv = i2c_get_clientdata(client);
- struct input_dev *input_dev = priv->input;
-
- if (device_may_wakeup(&client->dev))
- disable_irq_wake(priv->irq);
-
- mutex_lock(&input_dev->mutex);
-
- if (input_dev->users)
- eeti_ts_start(priv);
-
- mutex_unlock(&input_dev->mutex);
-
- return 0;
-}
-
-static SIMPLE_DEV_PM_OPS(eeti_ts_pm, eeti_ts_suspend, eeti_ts_resume);
-#endif
-
-static const struct i2c_device_id eeti_ts_id[] = {
- { "eeti_ts", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, eeti_ts_id);
-
-static struct i2c_driver eeti_ts_driver = {
- .driver = {
- .name = "eeti_ts",
-#ifdef CONFIG_PM
- .pm = &eeti_ts_pm,
-#endif
- },
- .probe = eeti_ts_probe,
- .remove = __devexit_p(eeti_ts_remove),
- .id_table = eeti_ts_id,
-};
-
-module_i2c_driver(eeti_ts_driver);
-
-MODULE_DESCRIPTION("EETI Touchscreen driver");
-MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-12-20 13:58:27 +0000