mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
65ac9f7a23
This patch converts the drivers in drivers/input/* to use module_serio_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
192 lines
4.5 KiB
C
192 lines
4.5 KiB
C
/*
|
|
* Dynapro serial touchscreen driver
|
|
*
|
|
* Copyright (c) 2009 Tias Guns
|
|
* Based on the inexio driver (c) Vojtech Pavlik and Dan Streetman and
|
|
* Richard Lemon
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* 2009/09/19 Tias Guns <tias@ulyssis.org>
|
|
* Copied inexio.c and edited for Dynapro protocol (from retired Xorg module)
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/input.h>
|
|
#include <linux/serio.h>
|
|
#include <linux/init.h>
|
|
|
|
#define DRIVER_DESC "Dynapro serial touchscreen driver"
|
|
|
|
MODULE_AUTHOR("Tias Guns <tias@ulyssis.org>");
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/*
|
|
* Definitions & global arrays.
|
|
*/
|
|
|
|
#define DYNAPRO_FORMAT_TOUCH_BIT 0x40
|
|
#define DYNAPRO_FORMAT_LENGTH 3
|
|
#define DYNAPRO_RESPONSE_BEGIN_BYTE 0x80
|
|
|
|
#define DYNAPRO_MIN_XC 0
|
|
#define DYNAPRO_MAX_XC 0x3ff
|
|
#define DYNAPRO_MIN_YC 0
|
|
#define DYNAPRO_MAX_YC 0x3ff
|
|
|
|
#define DYNAPRO_GET_XC(data) (data[1] | ((data[0] & 0x38) << 4))
|
|
#define DYNAPRO_GET_YC(data) (data[2] | ((data[0] & 0x07) << 7))
|
|
#define DYNAPRO_GET_TOUCHED(data) (DYNAPRO_FORMAT_TOUCH_BIT & data[0])
|
|
|
|
/*
|
|
* Per-touchscreen data.
|
|
*/
|
|
|
|
struct dynapro {
|
|
struct input_dev *dev;
|
|
struct serio *serio;
|
|
int idx;
|
|
unsigned char data[DYNAPRO_FORMAT_LENGTH];
|
|
char phys[32];
|
|
};
|
|
|
|
static void dynapro_process_data(struct dynapro *pdynapro)
|
|
{
|
|
struct input_dev *dev = pdynapro->dev;
|
|
|
|
if (DYNAPRO_FORMAT_LENGTH == ++pdynapro->idx) {
|
|
input_report_abs(dev, ABS_X, DYNAPRO_GET_XC(pdynapro->data));
|
|
input_report_abs(dev, ABS_Y, DYNAPRO_GET_YC(pdynapro->data));
|
|
input_report_key(dev, BTN_TOUCH,
|
|
DYNAPRO_GET_TOUCHED(pdynapro->data));
|
|
input_sync(dev);
|
|
|
|
pdynapro->idx = 0;
|
|
}
|
|
}
|
|
|
|
static irqreturn_t dynapro_interrupt(struct serio *serio,
|
|
unsigned char data, unsigned int flags)
|
|
{
|
|
struct dynapro *pdynapro = serio_get_drvdata(serio);
|
|
|
|
pdynapro->data[pdynapro->idx] = data;
|
|
|
|
if (DYNAPRO_RESPONSE_BEGIN_BYTE & pdynapro->data[0])
|
|
dynapro_process_data(pdynapro);
|
|
else
|
|
dev_dbg(&serio->dev, "unknown/unsynchronized data: %x\n",
|
|
pdynapro->data[0]);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void dynapro_disconnect(struct serio *serio)
|
|
{
|
|
struct dynapro *pdynapro = serio_get_drvdata(serio);
|
|
|
|
input_get_device(pdynapro->dev);
|
|
input_unregister_device(pdynapro->dev);
|
|
serio_close(serio);
|
|
serio_set_drvdata(serio, NULL);
|
|
input_put_device(pdynapro->dev);
|
|
kfree(pdynapro);
|
|
}
|
|
|
|
/*
|
|
* dynapro_connect() is the routine that is called when someone adds a
|
|
* new serio device that supports dynapro protocol and registers it as
|
|
* an input device. This is usually accomplished using inputattach.
|
|
*/
|
|
|
|
static int dynapro_connect(struct serio *serio, struct serio_driver *drv)
|
|
{
|
|
struct dynapro *pdynapro;
|
|
struct input_dev *input_dev;
|
|
int err;
|
|
|
|
pdynapro = kzalloc(sizeof(struct dynapro), GFP_KERNEL);
|
|
input_dev = input_allocate_device();
|
|
if (!pdynapro || !input_dev) {
|
|
err = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
pdynapro->serio = serio;
|
|
pdynapro->dev = input_dev;
|
|
snprintf(pdynapro->phys, sizeof(pdynapro->phys),
|
|
"%s/input0", serio->phys);
|
|
|
|
input_dev->name = "Dynapro Serial TouchScreen";
|
|
input_dev->phys = pdynapro->phys;
|
|
input_dev->id.bustype = BUS_RS232;
|
|
input_dev->id.vendor = SERIO_DYNAPRO;
|
|
input_dev->id.product = 0;
|
|
input_dev->id.version = 0x0001;
|
|
input_dev->dev.parent = &serio->dev;
|
|
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(pdynapro->dev, ABS_X,
|
|
DYNAPRO_MIN_XC, DYNAPRO_MAX_XC, 0, 0);
|
|
input_set_abs_params(pdynapro->dev, ABS_Y,
|
|
DYNAPRO_MIN_YC, DYNAPRO_MAX_YC, 0, 0);
|
|
|
|
serio_set_drvdata(serio, pdynapro);
|
|
|
|
err = serio_open(serio, drv);
|
|
if (err)
|
|
goto fail2;
|
|
|
|
err = input_register_device(pdynapro->dev);
|
|
if (err)
|
|
goto fail3;
|
|
|
|
return 0;
|
|
|
|
fail3: serio_close(serio);
|
|
fail2: serio_set_drvdata(serio, NULL);
|
|
fail1: input_free_device(input_dev);
|
|
kfree(pdynapro);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* The serio driver structure.
|
|
*/
|
|
|
|
static struct serio_device_id dynapro_serio_ids[] = {
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_DYNAPRO,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(serio, dynapro_serio_ids);
|
|
|
|
static struct serio_driver dynapro_drv = {
|
|
.driver = {
|
|
.name = "dynapro",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.id_table = dynapro_serio_ids,
|
|
.interrupt = dynapro_interrupt,
|
|
.connect = dynapro_connect,
|
|
.disconnect = dynapro_disconnect,
|
|
};
|
|
|
|
module_serio_driver(dynapro_drv);
|