From: Mandeep Singh Baines <msb@xxxxxxxxxxxx> BUG=NONE TEST=Built and ran on st1.5 Signed-off-by: Horace Fu <horace.fu@xxxxxxxxxxxx> Signed-off-by: Mandeep Singh Baines <msb@xxxxxxxxxxxx> 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 diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig index 3feeb3a..35aab2c 100644 --- a/drivers/input/mouse/Kconfig +++ b/drivers/input/mouse/Kconfig @@ -321,4 +321,13 @@ config MOUSE_SYNAPTICS_I2C To compile this driver as a module, choose M here: the module will be called synaptics_i2c. +config MOUSE_QCITP + tristate "Quanta Computer Inc. Touchpad" + depends on I2C && ARCH_MSM_SCORPION + default n + help + Say Y here if you want to use the Quanta touchpad driver for ST 1.5 + platform. + + endif diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile index 570c84a..57d5135 100644 --- a/drivers/input/mouse/Makefile +++ b/drivers/input/mouse/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_MOUSE_RISCPC) += rpcmouse.o obj-$(CONFIG_MOUSE_SERIAL) += sermouse.o obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o obj-$(CONFIG_MOUSE_VSXXXAA) += vsxxxaa.o +obj-$(CONFIG_MOUSE_QCITP) += qci_touchpad.o psmouse-objs := psmouse-base.o synaptics.o diff --git a/drivers/input/mouse/qci_touchpad.c b/drivers/input/mouse/qci_touchpad.c new file mode 100644 index 0000000..1cfa0ee --- /dev/null +++ b/drivers/input/mouse/qci_touchpad.c @@ -0,0 +1,308 @@ +/* Quanta I2C Touchpad Driver + * + * Copyright (C) 2009 Quanta Computer Inc. + * Author: Hsin Wu <hsin.wu@xxxxxxxxxxxx> + * Author: Austin Lai <austin.lai@xxxxxxxxxxxx> + * + * 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 + * GNU General Public License for more details. + * + */ + + /* + * + * The Driver with I/O communications via the I2C Interface for ON2 of AP BU. + * And it is only working on the nuvoTon WPCE775x Embedded Controller. + * + */ + +#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> + +#define TOUCHPAD_ID_NAME "qci-i2cpad" +#define TOUCHPAD_NAME "PS2 Touchpad" +#define TOUCHPAD_DEVICE "/i2c/input1" +#define TOUCHPAD_CMD_ENABLE 0xF4 + +static int __devinit qcitp_probe(struct i2c_client *client, + const struct i2c_device_id *id); +static int __devexit qcitp_remove(struct i2c_client *kbd); + +/* 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 + *---------------------------------------------------------------------------*/ + +#ifdef CONFIG_PM +static int qcitp_suspend(struct device *dev) +{ + return 0; +} + +static int qcitp_resume(struct device *dev) +{ + return 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; + + if (ec_data[1]) + dx = (int) ec_data[1] - + (int) ((ec_data[0] << 4) & 0x100); + + if (ec_data[2]) + dy = (int) ((ec_data[0] << 3) & 0x100) - + (int) ec_data[2]; + + dx = (dx * tp_sense_val)/10; + dy = (dy * tp_sense_val)/10; + + 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; + struct input_dev *itpad_dev = itpad_drv_data->qcitp_dev; + + qcitp_fetch_data(itpad_client, itpad_drv_data->ecdata); + qcitp_report_key(itpad_dev, itpad_drv_data->ecdata); +} + +static irqreturn_t qcitp_interrupt(int irq, void *dev_id) +{ + struct i2ctpad_drv_data *itpad_drv_data = dev_id; + schedule_work(&itpad_drv_data->work); + 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; + + context = kzalloc(sizeof(struct i2ctpad_drv_data), GFP_KERNEL); + if (!context) + return err; + i2c_set_clientdata(client, context); + context->ti2c_client = client; + context->qcitp_gpio = client->irq; + + /* Enable mouse */ + i2c_smbus_write_byte(client, TOUCHPAD_CMD_ENABLE); + mdelay(100); + 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, + qcitp_interrupt, + IRQF_TRIGGER_FALLING, + TOUCHPAD_ID_NAME, + context); + if (err) { + pr_err("[TouchPad] unable to get IRQ\n"); + goto request_irq_fail; + } + /*create touchpad kobject*/ + context->tp_kobj = kobject_create_and_add("touchpad", NULL); + + err = sysfs_create_group(context->tp_kobj, &attr_group); + if (err) + pr_warning("[TouchPad] sysfs create fail\n"); + + tp_sense_val = 10; + + return 0; + +request_irq_fail: + gpio_free(context->qcitp_gpio); + +gpio_request_fail: + input_unregister_device(context->qcitp_dev); + +register_fail: + input_free_device(context->qcitp_dev); + +allocate_fail: + i2c_set_clientdata(client, NULL); + kfree(context); + return err; +} + +static int __devexit qcitp_remove(struct i2c_client *dev) +{ + struct i2ctpad_drv_data *context = i2c_get_clientdata(dev); + + free_irq(context->qcitp_irq, context); + gpio_free(context->qcitp_gpio); + input_free_device(context->qcitp_dev); + input_unregister_device(context->qcitp_dev); + kfree(context); + + return 0; +} + +static int __init qcitp_init(void) +{ + return i2c_add_driver(&i2ctp_driver); +} + + +static void __exit qcitp_exit(void) +{ + i2c_del_driver(&i2ctp_driver); +} + +module_init(qcitp_init); +module_exit(qcitp_exit); + +MODULE_AUTHOR("Quanta Computer Inc."); +MODULE_DESCRIPTION("Quanta Embedded Controller I2C Touch Pad Driver"); +MODULE_LICENSE("GPL v2"); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
