cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/touchscreen/ipaq-micro-ts.c

/*
 * 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.
 *
 * h3600 atmel micro companion support, touchscreen subdevice
 * Author : Alessandro Gardich <gremlin@gremlin.it>
 * Author : Dmitry Artamonow <mad_soft@inbox.ru>
 * Author : Linus Walleij <linus.walleij@linaro.org>
 *
 */

#include <asm/byteorder.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pm.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/mfd/ipaq-micro.h>


struct touchscreen_data {
	
struct input_dev *input;
	
struct ipaq_micro *micro;
};


static void micro_ts_receive(void *data, int len, unsigned char *msg) { struct touchscreen_data *ts = data; if (len == 4) { input_report_abs(ts->input, ABS_X, be16_to_cpup((__be16 *) &msg[2])); input_report_abs(ts->input, ABS_Y, be16_to_cpup((__be16 *) &msg[0])); input_report_key(ts->input, BTN_TOUCH, 1); input_sync(ts->input); } else if (len == 0) { input_report_abs(ts->input, ABS_X, 0); input_report_abs(ts->input, ABS_Y, 0); input_report_key(ts->input, BTN_TOUCH, 0); input_sync(ts->input); } }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow144100.00%1100.00%
Total144100.00%1100.00%


static void micro_ts_toggle_receive(struct touchscreen_data *ts, bool enable) { struct ipaq_micro *micro = ts->micro; spin_lock_irq(&micro->lock); if (enable) { micro->ts = micro_ts_receive; micro->ts_data = ts; } else { micro->ts = NULL; micro->ts_data = NULL; } spin_unlock_irq(&ts->micro->lock); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov74100.00%1100.00%
Total74100.00%1100.00%


static int micro_ts_open(struct input_dev *input) { struct touchscreen_data *ts = input_get_drvdata(input); micro_ts_toggle_receive(ts, true); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov31100.00%1100.00%
Total31100.00%1100.00%


static void micro_ts_close(struct input_dev *input) { struct touchscreen_data *ts = input_get_drvdata(input); micro_ts_toggle_receive(ts, false); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov28100.00%1100.00%
Total28100.00%1100.00%


static int micro_ts_probe(struct platform_device *pdev) { struct ipaq_micro *micro = dev_get_drvdata(pdev->dev.parent); struct touchscreen_data *ts; int error; ts = devm_kzalloc(&pdev->dev, sizeof(*ts), GFP_KERNEL); if (!ts) return -ENOMEM; ts->micro = micro; ts->input = devm_input_allocate_device(&pdev->dev); if (!ts->input) { dev_err(&pdev->dev, "failed to allocate input device\n"); return -ENOMEM; } ts->input->name = "ipaq micro ts"; ts->input->open = micro_ts_open; ts->input->close = micro_ts_close; input_set_drvdata(ts->input, ts); input_set_capability(ts->input, EV_KEY, BTN_TOUCH); input_set_capability(ts->input, EV_ABS, ABS_X); input_set_capability(ts->input, EV_ABS, ABS_Y); input_set_abs_params(ts->input, ABS_X, 0, 1023, 0, 0); input_set_abs_params(ts->input, ABS_Y, 0, 1023, 0, 0); error = input_register_device(ts->input); if (error) { dev_err(&pdev->dev, "error registering touch input\n"); return error; } platform_set_drvdata(pdev, ts); dev_info(&pdev->dev, "iPAQ micro touchscreen\n"); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow19477.91%150.00%
Dmitry Torokhov5522.09%150.00%
Total249100.00%2100.00%


static int __maybe_unused micro_ts_suspend(struct device *dev) { struct touchscreen_data *ts = dev_get_drvdata(dev); micro_ts_toggle_receive(ts, false); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow2887.50%133.33%
Dmitry Torokhov39.38%133.33%
Jingoo Han13.12%133.33%
Total32100.00%3100.00%


static int __maybe_unused micro_ts_resume(struct device *dev) { struct touchscreen_data *ts = dev_get_drvdata(dev); struct input_dev *input = ts->input; mutex_lock(&input->mutex); if (input->users) micro_ts_toggle_receive(ts, true); mutex_unlock(&input->mutex); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow3758.73%133.33%
Dmitry Torokhov2539.68%133.33%
Jingoo Han11.59%133.33%
Total63100.00%3100.00%

static const struct dev_pm_ops micro_ts_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(micro_ts_suspend, micro_ts_resume) }; static struct platform_driver micro_ts_device_driver = { .driver = { .name = "ipaq-micro-ts", .pm = &micro_ts_dev_pm_ops, }, .probe = micro_ts_probe, }; module_platform_driver(micro_ts_device_driver); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("driver for iPAQ Atmel micro touchscreen"); MODULE_ALIAS("platform:ipaq-micro-ts");

Overall Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow51570.26%133.33%
Dmitry Torokhov21629.47%133.33%
Jingoo Han20.27%133.33%
Total733100.00%3100.00%
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