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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
174 lines
3.7 KiB
C
174 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Touchright serial touchscreen driver
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*
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* Copyright (c) 2006 Rick Koch <n1gp@hotmail.com>
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*
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* Based on MicroTouch driver (drivers/input/touchscreen/mtouch.c)
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* Copyright (c) 2004 Vojtech Pavlik
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* and Dan Streetman <ddstreet@ieee.org>
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*/
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#define DRIVER_DESC "Touchright serial touchscreen driver"
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MODULE_AUTHOR("Rick Koch <n1gp@hotmail.com>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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/*
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* Definitions & global arrays.
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*/
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#define TR_FORMAT_TOUCH_BIT 0x01
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#define TR_FORMAT_STATUS_BYTE 0x40
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#define TR_FORMAT_STATUS_MASK ~TR_FORMAT_TOUCH_BIT
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#define TR_LENGTH 5
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#define TR_MIN_XC 0
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#define TR_MAX_XC 0x1ff
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#define TR_MIN_YC 0
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#define TR_MAX_YC 0x1ff
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/*
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* Per-touchscreen data.
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*/
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struct tr {
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struct input_dev *dev;
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struct serio *serio;
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int idx;
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unsigned char data[TR_LENGTH];
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char phys[32];
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};
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static irqreturn_t tr_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct tr *tr = serio_get_drvdata(serio);
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struct input_dev *dev = tr->dev;
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tr->data[tr->idx] = data;
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if ((tr->data[0] & TR_FORMAT_STATUS_MASK) == TR_FORMAT_STATUS_BYTE) {
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if (++tr->idx == TR_LENGTH) {
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input_report_abs(dev, ABS_X,
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(tr->data[1] << 5) | (tr->data[2] >> 1));
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input_report_abs(dev, ABS_Y,
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(tr->data[3] << 5) | (tr->data[4] >> 1));
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input_report_key(dev, BTN_TOUCH,
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tr->data[0] & TR_FORMAT_TOUCH_BIT);
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input_sync(dev);
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tr->idx = 0;
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}
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}
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return IRQ_HANDLED;
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}
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/*
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* tr_disconnect() is the opposite of tr_connect()
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*/
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static void tr_disconnect(struct serio *serio)
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{
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struct tr *tr = serio_get_drvdata(serio);
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input_get_device(tr->dev);
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input_unregister_device(tr->dev);
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serio_close(serio);
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serio_set_drvdata(serio, NULL);
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input_put_device(tr->dev);
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kfree(tr);
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}
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/*
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* tr_connect() is the routine that is called when someone adds a
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* new serio device that supports the Touchright protocol and registers it as
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* an input device.
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*/
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static int tr_connect(struct serio *serio, struct serio_driver *drv)
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{
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struct tr *tr;
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struct input_dev *input_dev;
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int err;
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tr = kzalloc_obj(*tr);
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input_dev = input_allocate_device();
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if (!tr || !input_dev) {
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err = -ENOMEM;
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goto fail1;
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}
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tr->serio = serio;
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tr->dev = input_dev;
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scnprintf(tr->phys, sizeof(tr->phys), "%s/input0", serio->phys);
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input_dev->name = "Touchright Serial TouchScreen";
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input_dev->phys = tr->phys;
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input_dev->id.bustype = BUS_RS232;
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input_dev->id.vendor = SERIO_TOUCHRIGHT;
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input_dev->id.product = 0;
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input_dev->id.version = 0x0100;
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input_dev->dev.parent = &serio->dev;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
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input_set_abs_params(tr->dev, ABS_X, TR_MIN_XC, TR_MAX_XC, 0, 0);
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input_set_abs_params(tr->dev, ABS_Y, TR_MIN_YC, TR_MAX_YC, 0, 0);
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serio_set_drvdata(serio, tr);
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err = serio_open(serio, drv);
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if (err)
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goto fail2;
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err = input_register_device(tr->dev);
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if (err)
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goto fail3;
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return 0;
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fail3: serio_close(serio);
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fail2: serio_set_drvdata(serio, NULL);
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fail1: input_free_device(input_dev);
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kfree(tr);
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return err;
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}
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/*
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* The serio driver structure.
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*/
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static const struct serio_device_id tr_serio_ids[] = {
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{
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.type = SERIO_RS232,
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.proto = SERIO_TOUCHRIGHT,
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.id = SERIO_ANY,
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.extra = SERIO_ANY,
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},
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{ 0 }
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};
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MODULE_DEVICE_TABLE(serio, tr_serio_ids);
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static struct serio_driver tr_drv = {
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.driver = {
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.name = "touchright",
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},
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.description = DRIVER_DESC,
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.id_table = tr_serio_ids,
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.interrupt = tr_interrupt,
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.connect = tr_connect,
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.disconnect = tr_disconnect,
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};
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module_serio_driver(tr_drv);
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