Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Dmitry Artamonow | 514 | 70.03% | 1 | 25.00% |
Dmitry Torokhov | 216 | 29.43% | 1 | 25.00% |
Jingoo Han | 2 | 0.27% | 1 | 25.00% |
Thomas Gleixner | 2 | 0.27% | 1 | 25.00% |
Total | 734 | 4 |
// SPDX-License-Identifier: GPL-2.0-only /* * * 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); } } static void micro_ts_toggle_receive(struct touchscreen_data *ts, bool enable) { struct ipaq_micro *micro = ts->micro; spin_lock_irq(µ->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); } 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; } static void micro_ts_close(struct input_dev *input) { struct touchscreen_data *ts = input_get_drvdata(input); micro_ts_toggle_receive(ts, false); } 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; } 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; } 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; } 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 = µ_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");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1