MSM: add trackpad driver in st1.5

From: Mandeep Singh Baines <[email protected]>

BUG=NONE
TEST=Built and ran on st1.5

Signed-off-by Horace Fu <[email protected]>

Signed-off-by Mandeep Singh Baines <[email protected]>

Review URL: http://codereview.chromium.org/724001

---
 drivers/input/mouse/Kconfig        |    9 +
 drivers/input/mouse/Makefile       |    1 +
 drivers/input/mouse/qci_touchpad.c |  308 ++++++++++++++++++++++++++++++++++++
 3 files changed, 318 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/mouse/qci_touchpad.c

drivers/input/mouse/Kconfig +0 -0

index 3feeb3a..35aab2c 100644
@@ -321,4 +321,13 @@ config MOUSE_SYNAPTICS_I2C
 	  To compile this driver as a module, choose M here: the

drivers/input/mouse/Makefile +0 -0

 psmouse-objs := psmouse-base.o synaptics.o
 

drivers/input/mouse/qci_touchpad.c new file +13 -0

new file mode 100644
index 0000000..1cfa0ee
@@ -0,0 +1,308 @@
+/* Quanta I2C Touchpad Driver
+ *
+ * Copyright (C) 2009 Quanta Computer Inc.
+ * Author: Hsin Wu <[email protected]>
+ * Author: Austin Lai <[email protected]>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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

drivers/input/mouse/qci_touchpad.c new file +13 -0

+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/keyboard.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>

drivers/input/mouse/qci_touchpad.c new file +50 -0

+/* General structure to hold the driver data */
+struct i2ctpad_drv_data {
+	struct i2c_client *ti2c_client;
+	struct work_struct work;
+	struct input_dev *qcitp_dev;
+	struct kobject *tp_kobj;
+	unsigned int  qcitp_gpio;
+	unsigned int  qcitp_irq;
+	char ecdata[8];
+};
+
+static int tp_sense_val = 10;
+static ssize_t tp_sensitive_show(struct kobject *kobj,
+	struct kobj_attribute *attr, char * buf)
+{
+	return sprintf(buf, "%d\n", tp_sense_val);
+}
+
+static ssize_t tp_sensitive_store(struct kobject *kobj,
+	struct kobj_attribute *attr, const char* buf, size_t n)
+{
+	unsigned int val = 0;
+	sscanf(buf, "%d", &val);
+
+	if (val >= 1 && val <= 10)
+		tp_sense_val = val;
+	else
+		return  -ENOSYS;
+
+	return sizeof(buf);
+}
+
+static struct kobj_attribute tp_sensitivity = __ATTR(tp_sensitivity ,
+						     0644 ,
+						     tp_sensitive_show ,
+						     tp_sensitive_store);
+
+static struct attribute *g_tp[] = {
+	&tp_sensitivity.attr,
+	NULL,
+};
+
+static struct attribute_group attr_group = {
+	.attrs = g_tp,
+};
+
+/*-----------------------------------------------------------------------------
+ * Driver functions
+ *---------------------------------------------------------------------------*/
+

drivers/input/mouse/qci_touchpad.c new file +44 -0

+#endif
+
+static const struct i2c_device_id qcitp_idtable[] = {
+	{ TOUCHPAD_ID_NAME, 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, qcitp_idtable);
+#ifdef CONFIG_PM
+static struct dev_pm_ops qcitp_pm_ops = {
+	.suspend  = qcitp_suspend,
+	.resume   = qcitp_resume,
+};
+#endif
+static struct i2c_driver i2ctp_driver = {
+	.driver = {
+		.owner = THIS_MODULE,
+		.name  = TOUCHPAD_ID_NAME,
+#ifdef CONFIG_PM
+		.pm = &qcitp_pm_ops,
+#endif
+	},
+	.probe	  = qcitp_probe,
+	.remove	  = __devexit_p(qcitp_remove),
+	.id_table = qcitp_idtable,
+};
+
+static void qcitp_fetch_data(struct i2c_client *tpad_client,
+	char *ec_data)
+{
+	struct i2c_msg tp_msg;
+	int ret;
+	tp_msg.addr = tpad_client->addr;
+	tp_msg.flags = I2C_M_RD;
+	tp_msg.len = 3;
+	tp_msg.buf = (char *)&ec_data[0];
+	ret = i2c_transfer(tpad_client->adapter, &tp_msg, 1);
+}
+
+static void qcitp_report_key(struct input_dev *tpad_dev, char *ec_data)
+{
+	int dx = 0;
+	int dy = 0;
+

drivers/input/mouse/qci_touchpad.c new file +15 -0

+
+	input_report_key(tpad_dev, BTN_LEFT, ec_data[0] & 0x01);
+	input_report_key(tpad_dev, BTN_RIGHT, ec_data[0] & 0x02);
+	input_report_key(tpad_dev, BTN_MIDDLE, ec_data[0] & 0x04);
+	input_report_rel(tpad_dev, REL_X, dx);
+	input_report_rel(tpad_dev, REL_Y, dy);
+	input_sync(tpad_dev);
+}
+
+static void qcitp_work_handler(struct work_struct *_work)
+{
+	struct i2ctpad_drv_data *itpad_drv_data =
+		container_of(_work, struct i2ctpad_drv_data, work);
+
+	struct i2c_client *itpad_client = itpad_drv_data->ti2c_client;

drivers/input/mouse/qci_touchpad.c new file +9 -0

+	return IRQ_HANDLED;
+}
+
+static int __devinit qcitp_probe(struct i2c_client *client,
+				    const struct i2c_device_id *id)
+{
+	int err = -ENOMEM;
+	struct i2ctpad_drv_data *context = 0;
+

drivers/input/mouse/qci_touchpad.c new file +40 -0

+	i2c_smbus_read_byte(client);
+	/*allocate and register input device*/
+	context->qcitp_dev = input_allocate_device();
+	if (!context->qcitp_dev) {
+		pr_err("[TouchPad] allocting memory fail\n");
+		err = -ENOMEM;
+		goto allocate_fail;
+	}
+	context->qcitp_dev->name        = TOUCHPAD_NAME;
+	context->qcitp_dev->phys         = TOUCHPAD_DEVICE;
+	context->qcitp_dev->id.bustype = BUS_I2C;
+	context->qcitp_dev->id.vendor  = 0x1050;
+	context->qcitp_dev->id.product = 0x1;
+	context->qcitp_dev->id.version = 0x1;
+	context->qcitp_dev->evbit[0]  = BIT_MASK(EV_KEY) |
+					BIT_MASK(EV_REL);
+	context->qcitp_dev->relbit[0] = BIT_MASK(REL_X) |
+					BIT_MASK(REL_Y);
+	context->qcitp_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
+							 BIT_MASK(BTN_MIDDLE) |
+							 BIT_MASK(BTN_RIGHT);
+
+	input_set_drvdata(context->qcitp_dev, context);
+	err = input_register_device(context->qcitp_dev);
+	if (err) {
+		pr_err("[TouchPad] register device fail\n");
+		goto register_fail;
+	}
+
+	/*request intterrupt*/
+	INIT_WORK(&context->work, qcitp_work_handler);
+
+	err = gpio_request(context->qcitp_gpio, "qci-pad");
+	if (err) {
+		pr_err("[TouchPad]err gpio request\n");
+		goto gpio_request_fail;
+	}
+
+	context->qcitp_irq = gpio_to_irq(context->qcitp_gpio);
+	err = request_irq(context->qcitp_irq,

drivers/input/mouse/qci_touchpad.c new file +7 -0

+
+	err = sysfs_create_group(context->tp_kobj, &attr_group);
+	if (err)
+		pr_warning("[TouchPad] sysfs create fail\n");
+
+	tp_sense_val = 10;
+

drivers/input/mouse/qci_touchpad.c new file +12 -0

+	kfree(context);
+
+	return 0;
+}
+
+static int __init qcitp_init(void)
+{
+	return i2c_add_driver(&i2ctp_driver);
+}
+
+
+static void __exit qcitp_exit(void)