mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-08 03:40:35 +09:00
drivers: input: touch: add wacom_w9013 touch driver
Signed-off-by: Zorro Liu <lyx@rock-chips.com> Change-Id: Icbb978111ee9b90d0801a92d42024e271b08c40b
This commit is contained in:
Zorro Liu
@@ -598,6 +598,18 @@ config TOUCHSCREEN_WACOM_I2C
|
||||
To compile this driver as a module, choose M here: the module
|
||||
will be called wacom_i2c.
|
||||
|
||||
config TOUCHSCREEN_WACOM_W9013
|
||||
tristate "Wacom W9013 penabled serial touchscreen"
|
||||
depends on I2C
|
||||
help
|
||||
Say Y here if you have an Wacom W9013 penabled serial touchscreen
|
||||
connected to your system.
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called wacom_w9013.
|
||||
|
||||
config TOUCHSCREEN_LPC32XX
|
||||
tristate "LPC32XX touchscreen controller"
|
||||
depends on ARCH_LPC32XX
|
||||
|
||||
@@ -106,6 +106,7 @@ obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o
|
||||
obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o
|
||||
obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o
|
||||
obj-$(CONFIG_TOUCHSCREEN_WACOM_I2C) += wacom_i2c.o
|
||||
obj-$(CONFIG_TOUCHSCREEN_WACOM_W9013) += wacom_w9013.o
|
||||
obj-$(CONFIG_TOUCHSCREEN_WDT87XX_I2C) += wdt87xx_i2c.o
|
||||
obj-$(CONFIG_TOUCHSCREEN_WM831X) += wm831x-ts.o
|
||||
obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o
|
||||
|
||||
471
drivers/input/touchscreen/wacom_w9013.c
Normal file
471
drivers/input/touchscreen/wacom_w9013.c
Normal file
@@ -0,0 +1,471 @@
|
||||
/*
|
||||
* Wacom Penabled Driver for I2C
|
||||
*
|
||||
* Copyright (c) 2011 - 2013 Tatsunosuke Tobita, Wacom.
|
||||
* <tobita.tatsunosuke@wacom.co.jp>
|
||||
*
|
||||
* This program 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 of 2 of the License,
|
||||
* or (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/of_gpio.h>
|
||||
#include <linux/delay.h>
|
||||
#include <asm/unaligned.h>
|
||||
|
||||
#include <linux/notifier.h>
|
||||
|
||||
//#define ORIGIN_COORD
|
||||
|
||||
static int exchange_x_y_flag = 0;
|
||||
static int revert_x_flag = 0;
|
||||
static int revert_y_flag = 0;
|
||||
|
||||
static int screen_max_x = 20280;
|
||||
static int screen_max_y = 13942;
|
||||
|
||||
#define WACOM_CMD_QUERY0 0x04
|
||||
#define WACOM_CMD_QUERY1 0x00
|
||||
#define WACOM_CMD_QUERY2 0x33
|
||||
#define WACOM_CMD_QUERY3 0x02
|
||||
#define WACOM_CMD_THROW0 0x05
|
||||
#define WACOM_CMD_THROW1 0x00
|
||||
#define WACOM_QUERY_SIZE 19
|
||||
|
||||
struct wacom_features {
|
||||
int x_max;
|
||||
int y_max;
|
||||
int pressure_max;
|
||||
char fw_version;
|
||||
};
|
||||
|
||||
/*HID specific register*/
|
||||
#define HID_DESC_REGISTER 1
|
||||
#define COMM_REG 0x04
|
||||
#define DATA_REG 0x05
|
||||
|
||||
typedef struct hid_descriptor {
|
||||
u16 wHIDDescLength;
|
||||
u16 bcdVersion;
|
||||
u16 wReportDescLength;
|
||||
u16 wReportDescRegister;
|
||||
u16 wInputRegister;
|
||||
u16 wMaxInputLength;
|
||||
u16 wOutputRegister;
|
||||
u16 wMaxOutputLength;
|
||||
u16 wCommandRegister;
|
||||
u16 wDataRegister;
|
||||
u16 wVendorID;
|
||||
u16 wProductID;
|
||||
u16 wVersion;
|
||||
u16 RESERVED_HIGH;
|
||||
u16 RESERVED_LOW;
|
||||
} HID_DESC;
|
||||
|
||||
struct wacom_i2c {
|
||||
struct wacom_features *features;
|
||||
struct i2c_client *client;
|
||||
struct input_dev *input;
|
||||
u8 data[WACOM_QUERY_SIZE];
|
||||
bool prox;
|
||||
int tool;
|
||||
};
|
||||
static int get_hid_desc(struct i2c_client *client,
|
||||
struct hid_descriptor *hid_desc)
|
||||
{
|
||||
int ret = -1;
|
||||
char cmd[] = {HID_DESC_REGISTER, 0x00};
|
||||
struct i2c_msg msgs[] = {
|
||||
{
|
||||
.addr = client->addr,
|
||||
.flags = 0,
|
||||
.len = sizeof(cmd),
|
||||
.buf = cmd,
|
||||
},
|
||||
{
|
||||
.addr = client->addr,
|
||||
.flags = I2C_M_RD,
|
||||
.len = sizeof(HID_DESC),
|
||||
.buf = (char *)hid_desc,
|
||||
},
|
||||
};
|
||||
|
||||
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
if (ret != ARRAY_SIZE(msgs))
|
||||
return -EIO;
|
||||
|
||||
printk("******************************\n");
|
||||
printk("wacom firmware vesrsion:0x%x\n", hid_desc->wVersion);
|
||||
printk("******************************\n");
|
||||
|
||||
ret = 0;
|
||||
//out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static int wacom_query_device(struct i2c_client *client,
|
||||
struct wacom_features *features)
|
||||
{
|
||||
int ret;
|
||||
u8 cmd1[] = { WACOM_CMD_QUERY0, WACOM_CMD_QUERY1,
|
||||
WACOM_CMD_QUERY2, WACOM_CMD_QUERY3 };
|
||||
u8 cmd2[] = { WACOM_CMD_THROW0, WACOM_CMD_THROW1 };
|
||||
u8 data[WACOM_QUERY_SIZE];
|
||||
struct i2c_msg msgs[] = {
|
||||
{
|
||||
.addr = client->addr,
|
||||
.flags = 0,
|
||||
.len = sizeof(cmd1),
|
||||
.buf = cmd1,
|
||||
},
|
||||
{
|
||||
.addr = client->addr,
|
||||
.flags = 0,
|
||||
.len = sizeof(cmd2),
|
||||
.buf = cmd2,
|
||||
},
|
||||
{
|
||||
.addr = client->addr,
|
||||
.flags = I2C_M_RD,
|
||||
.len = sizeof(data),
|
||||
.buf = data,
|
||||
},
|
||||
};
|
||||
|
||||
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
if (ret != ARRAY_SIZE(msgs))
|
||||
return -EIO;
|
||||
|
||||
features->x_max = get_unaligned_le16(&data[3]);
|
||||
features->y_max = get_unaligned_le16(&data[5]);
|
||||
features->pressure_max = get_unaligned_le16(&data[11]);
|
||||
features->fw_version = get_unaligned_le16(&data[13]);
|
||||
printk("Wacom source screen x_max:%d, y_max:%d, pressure:%d, fw:%d\n",
|
||||
features->x_max, features->y_max,
|
||||
features->pressure_max, features->fw_version);
|
||||
|
||||
if (1 == exchange_x_y_flag) {
|
||||
swap(features->x_max, features->y_max);
|
||||
}
|
||||
screen_max_x = features->x_max;
|
||||
screen_max_y = features->y_max;
|
||||
printk("Wacom desc screen x_max:%d, y_max:%d\n", features->x_max, features->y_max);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
|
||||
{
|
||||
struct wacom_i2c *wac_i2c = dev_id;
|
||||
struct input_dev *input = wac_i2c->input;
|
||||
//struct wacom_features *features = wac_i2c->features;
|
||||
u8 *data = wac_i2c->data;
|
||||
unsigned int x, y, pressure;
|
||||
unsigned char tsw, f1, f2, ers;
|
||||
int error;
|
||||
|
||||
error = i2c_master_recv(wac_i2c->client,
|
||||
wac_i2c->data, sizeof(wac_i2c->data));
|
||||
if (error < 0)
|
||||
goto out;
|
||||
|
||||
tsw = data[3] & 0x01;
|
||||
ers = data[3] & 0x04;
|
||||
f1 = data[3] & 0x02;
|
||||
f2 = data[3] & 0x10;
|
||||
x = le16_to_cpup((__le16 *)&data[4]);
|
||||
y = le16_to_cpup((__le16 *)&data[6]);
|
||||
pressure = le16_to_cpup((__le16 *)&data[8]);
|
||||
|
||||
if (!wac_i2c->prox)
|
||||
wac_i2c->tool = (data[3] & 0x0c) ?
|
||||
BTN_TOOL_RUBBER : BTN_TOOL_PEN;
|
||||
|
||||
wac_i2c->prox = data[3] & 0x20;
|
||||
|
||||
if (1 == exchange_x_y_flag) {
|
||||
swap(x, y);
|
||||
}
|
||||
if (1 == revert_x_flag) {
|
||||
x = screen_max_x - x;
|
||||
}
|
||||
if (1 == revert_y_flag) {
|
||||
y = screen_max_y - y;
|
||||
}
|
||||
|
||||
input_report_key(input, BTN_TOUCH, tsw || ers);
|
||||
input_report_key(input, wac_i2c->tool, wac_i2c->prox);
|
||||
input_report_key(input, BTN_STYLUS, f1);
|
||||
input_report_key(input, BTN_STYLUS2, f2);
|
||||
input_report_abs(input, ABS_X, x);
|
||||
input_report_abs(input, ABS_Y, y);
|
||||
input_report_abs(input, ABS_PRESSURE, pressure);
|
||||
input_sync(input);
|
||||
|
||||
out:
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int wacom_i2c_open(struct input_dev *dev)
|
||||
{
|
||||
struct wacom_i2c *wac_i2c = input_get_drvdata(dev);
|
||||
struct i2c_client *client = wac_i2c->client;
|
||||
|
||||
enable_irq(client->irq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void wacom_i2c_close(struct input_dev *dev)
|
||||
{
|
||||
struct wacom_i2c *wac_i2c = input_get_drvdata(dev);
|
||||
struct i2c_client *client = wac_i2c->client;
|
||||
|
||||
disable_irq(client->irq);
|
||||
}
|
||||
|
||||
static int g_irq_gpio = -1;
|
||||
static int wacom_i2c_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct wacom_i2c *wac_i2c;
|
||||
struct input_dev *input;
|
||||
struct wacom_features features = { 0 };
|
||||
HID_DESC hid_desc = { 0 };
|
||||
struct device_node *wac_np;
|
||||
int reset_gpio, irq_gpio = -1, pen_detect_gpio;
|
||||
int error;
|
||||
|
||||
printk("wacom_i2c_probe\n");
|
||||
wac_np = client->dev.of_node;
|
||||
if (!wac_np) {
|
||||
dev_err(&client->dev, "get device node error\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
|
||||
dev_err(&client->dev, "i2c_check_functionality error\n");
|
||||
return -EIO;
|
||||
}
|
||||
of_property_read_u32(wac_np, "revert_x", &revert_x_flag);
|
||||
of_property_read_u32(wac_np, "revert_y", &revert_y_flag);
|
||||
of_property_read_u32(wac_np, "xy_exchange", &exchange_x_y_flag);
|
||||
|
||||
error = wacom_query_device(client, &features);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
error = get_hid_desc(client, &hid_desc);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
|
||||
wac_i2c = kzalloc(sizeof(*wac_i2c), GFP_KERNEL);
|
||||
input = input_allocate_device();
|
||||
if (!wac_i2c || !input) {
|
||||
error = -ENOMEM;
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
reset_gpio = of_get_named_gpio(wac_np, "gpio_rst", 0);
|
||||
if (!gpio_is_valid(reset_gpio)) {
|
||||
dev_err(&client->dev, "no gpio_rst pin available\n");
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
error = devm_gpio_request_one(&client->dev, reset_gpio, GPIOF_OUT_INIT_LOW, "gpio-rst");
|
||||
if (error < 0) {
|
||||
goto err_free_mem;
|
||||
}
|
||||
gpio_direction_output(reset_gpio, 0);
|
||||
msleep(100);
|
||||
gpio_direction_output(reset_gpio, 1);
|
||||
|
||||
pen_detect_gpio = of_get_named_gpio(wac_np, "gpio_detect", 0);
|
||||
if (!gpio_is_valid(pen_detect_gpio)) {
|
||||
dev_err(&client->dev, "no pen_detect_gpio pin available\n");
|
||||
goto err_free_reset_gpio;
|
||||
}
|
||||
error = devm_gpio_request_one(&client->dev, pen_detect_gpio, GPIOF_IN, "gpio_detect");
|
||||
if (error < 0) {
|
||||
goto err_free_reset_gpio;
|
||||
}
|
||||
|
||||
irq_gpio = of_get_named_gpio(wac_np, "gpio_intr", 0);
|
||||
if (!gpio_is_valid(irq_gpio)) {
|
||||
dev_err(&client->dev, "no gpio_intr pin available\n");
|
||||
goto err_free_pen_detect_gpio;
|
||||
}
|
||||
g_irq_gpio = irq_gpio;
|
||||
#if 1
|
||||
error = devm_gpio_request_one(&client->dev, irq_gpio, GPIOF_IN, "gpio_intr");
|
||||
if (error < 0) {
|
||||
goto err_free_pen_detect_gpio;
|
||||
}
|
||||
#endif
|
||||
client->irq = gpio_to_irq(irq_gpio);
|
||||
//printk("wacom_i2c_probe irq=%d, irq_gpio=%d\n",client->irq, irq_gpio);
|
||||
if (client->irq < 0) {
|
||||
dev_err(&client->dev, "Unable to get irq number for GPIO %d, error %d\n", irq_gpio, client->irq);
|
||||
goto err_free_irq_gpio;
|
||||
}
|
||||
|
||||
wac_i2c->features = &features;
|
||||
wac_i2c->client = client;
|
||||
wac_i2c->input = input;
|
||||
|
||||
input->name = "Wacom I2C Digitizer";
|
||||
input->id.bustype = BUS_I2C;
|
||||
input->id.vendor = 0x56a;
|
||||
//input->id.version = features.fw_version;
|
||||
input->id.version = hid_desc.wVersion;
|
||||
|
||||
input->dev.parent = &client->dev;
|
||||
input->open = wacom_i2c_open;
|
||||
input->close = wacom_i2c_close;
|
||||
|
||||
input->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
||||
|
||||
__set_bit(BTN_TOOL_PEN, input->keybit);
|
||||
__set_bit(BTN_TOOL_RUBBER, input->keybit);
|
||||
__set_bit(BTN_STYLUS, input->keybit);
|
||||
__set_bit(BTN_STYLUS2, input->keybit);
|
||||
__set_bit(BTN_TOUCH, input->keybit);
|
||||
__set_bit(INPUT_PROP_DIRECT, input->propbit);
|
||||
|
||||
input_set_abs_params(input, ABS_X, 0, features.x_max, 0, 0);
|
||||
input_set_abs_params(input, ABS_Y, 0, features.y_max, 0, 0);
|
||||
input_set_abs_params(input, ABS_PRESSURE, 0, features.pressure_max, 0, 0);
|
||||
|
||||
input_set_drvdata(input, wac_i2c);
|
||||
|
||||
error = request_threaded_irq(client->irq, NULL, wacom_i2c_irq,
|
||||
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
|
||||
"wacom", wac_i2c);
|
||||
if (error) {
|
||||
dev_err(&client->dev,
|
||||
"Failed to enable IRQ, error: %d\n", error);
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
/* Disable the IRQ, we'll enable it in wac_i2c_open() */
|
||||
disable_irq(client->irq);
|
||||
|
||||
error = input_register_device(wac_i2c->input);
|
||||
if (error) {
|
||||
dev_err(&client->dev,
|
||||
"Failed to register input device, error: %d\n", error);
|
||||
goto err_free_irq;
|
||||
}
|
||||
|
||||
i2c_set_clientdata(client, wac_i2c);
|
||||
return 0;
|
||||
|
||||
err_free_irq:
|
||||
free_irq(client->irq, wac_i2c);
|
||||
err_free_reset_gpio:
|
||||
err_free_pen_detect_gpio:
|
||||
err_free_irq_gpio:
|
||||
err_free_mem:
|
||||
input_free_device(input);
|
||||
kfree(wac_i2c);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int wacom_i2c_remove(struct i2c_client *client)
|
||||
{
|
||||
struct wacom_i2c *wac_i2c = i2c_get_clientdata(client);
|
||||
|
||||
free_irq(client->irq, wac_i2c);
|
||||
input_unregister_device(wac_i2c->input);
|
||||
kfree(wac_i2c);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __maybe_unused wacom_i2c_suspend(struct device *dev)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
|
||||
disable_irq(client->irq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __maybe_unused wacom_i2c_resume(struct device *dev)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
|
||||
enable_irq(client->irq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(wacom_i2c_pm, wacom_i2c_suspend, wacom_i2c_resume);
|
||||
|
||||
static const struct i2c_device_id wacom_i2c_id[] = {
|
||||
{ "wacom", 0 },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, wacom_i2c_id);
|
||||
|
||||
static const struct of_device_id wacom_dt_ids[] = {
|
||||
{
|
||||
.compatible = "wacom,w9013",
|
||||
.data = (void *) &wacom_i2c_id[0],
|
||||
}, {
|
||||
/* sentinel */
|
||||
}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, wacom_dt_ids);
|
||||
|
||||
static struct i2c_driver wacom_i2c_driver = {
|
||||
.driver = {
|
||||
.name = "wacom",
|
||||
.owner = THIS_MODULE,
|
||||
.of_match_table = wacom_dt_ids,
|
||||
.pm = &wacom_i2c_pm,
|
||||
},
|
||||
|
||||
.probe = wacom_i2c_probe,
|
||||
.remove = wacom_i2c_remove,
|
||||
.id_table = wacom_i2c_id,
|
||||
};
|
||||
|
||||
static int __init wacom_init(void)
|
||||
{
|
||||
return i2c_add_driver(&wacom_i2c_driver);
|
||||
}
|
||||
|
||||
static void __exit wacom_exit(void)
|
||||
{
|
||||
i2c_del_driver(&wacom_i2c_driver);
|
||||
}
|
||||
|
||||
/*
|
||||
* Module entry points
|
||||
*/
|
||||
subsys_initcall(wacom_init);
|
||||
//late_initcall(wacom_init);
|
||||
module_exit(wacom_exit);
|
||||
|
||||
//module_i2c_driver(wacom_i2c_driver);
|
||||
|
||||
MODULE_AUTHOR("Tatsunosuke Tobita <tobita.tatsunosuke@wacom.co.jp>");
|
||||
MODULE_DESCRIPTION("WACOM EMR I2C Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Reference in New Issue
Block a user