Release 4.7 drivers/input/touchscreen/jornada720_ts.c
/*
* drivers/input/touchscreen/jornada720_ts.c
*
* Copyright (C) 2007 Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
*
* Copyright (C) 2006 Filip Zyzniewski <filip.zyzniewski@tefnet.pl>
* based on HP Jornada 56x touchscreen driver by Alex Lange <chicken@handhelds.org>
*
* 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.
*
* HP Jornada 710/720/729 Touchscreen Driver
*/
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/jornada720.h>
#include <mach/irqs.h>
MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
MODULE_DESCRIPTION("HP Jornada 710/720/728 touchscreen driver");
MODULE_LICENSE("GPL v2");
struct jornada_ts {
struct input_dev *dev;
int x_data[4]; /* X sample values */
int y_data[4]; /* Y sample values */
};
static void jornada720_ts_collect_data(struct jornada_ts *jornada_ts)
{
/* 3 low word X samples */
jornada_ts->x_data[0] = jornada_ssp_byte(TXDUMMY);
jornada_ts->x_data[1] = jornada_ssp_byte(TXDUMMY);
jornada_ts->x_data[2] = jornada_ssp_byte(TXDUMMY);
/* 3 low word Y samples */
jornada_ts->y_data[0] = jornada_ssp_byte(TXDUMMY);
jornada_ts->y_data[1] = jornada_ssp_byte(TXDUMMY);
jornada_ts->y_data[2] = jornada_ssp_byte(TXDUMMY);
/* combined x samples bits */
jornada_ts->x_data[3] = jornada_ssp_byte(TXDUMMY);
/* combined y samples bits */
jornada_ts->y_data[3] = jornada_ssp_byte(TXDUMMY);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kristoffer ericson | kristoffer ericson | 111 | 100.00% | 1 | 100.00% |
| Total | 111 | 100.00% | 1 | 100.00% |
static int jornada720_ts_average(int coords[4])
{
int coord, high_bits = coords[3];
coord = coords[0] | ((high_bits & 0x03) << 8);
coord += coords[1] | ((high_bits & 0x0c) << 6);
coord += coords[2] | ((high_bits & 0x30) << 4);
return coord / 3;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kristoffer ericson | kristoffer ericson | 78 | 100.00% | 1 | 100.00% |
| Total | 78 | 100.00% | 1 | 100.00% |
static irqreturn_t jornada720_ts_interrupt(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
struct jornada_ts *jornada_ts = platform_get_drvdata(pdev);
struct input_dev *input = jornada_ts->dev;
int x, y;
/* If GPIO_GPIO9 is set to high then report pen up */
if (GPLR & GPIO_GPIO(9)) {
input_report_key(input, BTN_TOUCH, 0);
input_sync(input);
} else {
jornada_ssp_start();
/* proper reply to request is always TXDUMMY */
if (jornada_ssp_inout(GETTOUCHSAMPLES) == TXDUMMY) {
jornada720_ts_collect_data(jornada_ts);
x = jornada720_ts_average(jornada_ts->x_data);
y = jornada720_ts_average(jornada_ts->y_data);
input_report_key(input, BTN_TOUCH, 1);
input_report_abs(input, ABS_X, x);
input_report_abs(input, ABS_Y, y);
input_sync(input);
}
jornada_ssp_end();
}
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kristoffer ericson | kristoffer ericson | 149 | 100.00% | 1 | 100.00% |
| Total | 149 | 100.00% | 1 | 100.00% |
static int jornada720_ts_probe(struct platform_device *pdev)
{
struct jornada_ts *jornada_ts;
struct input_dev *input_dev;
int error;
jornada_ts = devm_kzalloc(&pdev->dev, sizeof(*jornada_ts), GFP_KERNEL);
if (!jornada_ts)
return -ENOMEM;
input_dev = devm_input_allocate_device(&pdev->dev);
if (!input_dev)
return -ENOMEM;
platform_set_drvdata(pdev, jornada_ts);
jornada_ts->dev = input_dev;
input_dev->name = "HP Jornada 7xx Touchscreen";
input_dev->phys = "jornadats/input0";
input_dev->id.bustype = BUS_HOST;
input_dev->dev.parent = &pdev->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(input_dev, ABS_X, 270, 3900, 0, 0);
input_set_abs_params(input_dev, ABS_Y, 180, 3700, 0, 0);
error = devm_request_irq(&pdev->dev, IRQ_GPIO9,
jornada720_ts_interrupt,
IRQF_TRIGGER_RISING,
"HP7XX Touchscreen driver", pdev);
if (error) {
dev_err(&pdev->dev, "HP7XX TS : Unable to acquire irq!\n");
return error;
}
error = input_register_device(jornada_ts->dev);
if (error)
return error;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kristoffer ericson | kristoffer ericson | 194 | 82.91% | 2 | 66.67% |
| pramod gurav | pramod gurav | 40 | 17.09% | 1 | 33.33% |
| Total | 234 | 100.00% | 3 | 100.00% |
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:jornada_ts");
static struct platform_driver jornada720_ts_driver = {
.probe = jornada720_ts_probe,
.driver = {
.name = "jornada_ts",
},
};
module_platform_driver(jornada720_ts_driver);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kristoffer ericson | kristoffer ericson | 612 | 91.07% | 2 | 20.00% |
| pramod gurav | pramod gurav | 40 | 5.95% | 1 | 10.00% |
| kay sievers | kay sievers | 6 | 0.89% | 1 | 10.00% |
| russell king | russell king | 5 | 0.74% | 2 | 20.00% |
| rob herring | rob herring | 3 | 0.45% | 1 | 10.00% |
| tejun heo | tejun heo | 3 | 0.45% | 1 | 10.00% |
| jj ding | jj ding | 2 | 0.30% | 1 | 10.00% |
| al viro | al viro | 1 | 0.15% | 1 | 10.00% |
| Total | 672 | 100.00% | 10 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.