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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>
186 lines
4.4 KiB
C
186 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* iNexio serial touchscreen driver
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*
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* Copyright (c) 2008 Richard Lemon
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* Based on the mtouch driver (c) Vojtech Pavlik and Dan Streetman
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*/
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/*
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* 2008/06/19 Richard Lemon <richard@codelemon.com>
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* Copied mtouch.c and edited for iNexio protocol
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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 "iNexio serial touchscreen driver"
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MODULE_AUTHOR("Richard Lemon <richard@codelemon.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 INEXIO_FORMAT_TOUCH_BIT 0x01
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#define INEXIO_FORMAT_LENGTH 5
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#define INEXIO_RESPONSE_BEGIN_BYTE 0x80
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/* todo: check specs for max length of all responses */
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#define INEXIO_MAX_LENGTH 16
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#define INEXIO_MIN_XC 0
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#define INEXIO_MAX_XC 0x3fff
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#define INEXIO_MIN_YC 0
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#define INEXIO_MAX_YC 0x3fff
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#define INEXIO_GET_XC(data) (((data[1])<<7) | data[2])
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#define INEXIO_GET_YC(data) (((data[3])<<7) | data[4])
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#define INEXIO_GET_TOUCHED(data) (INEXIO_FORMAT_TOUCH_BIT & data[0])
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/*
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* Per-touchscreen data.
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*/
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struct inexio {
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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[INEXIO_MAX_LENGTH];
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char phys[32];
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};
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static void inexio_process_data(struct inexio *pinexio)
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{
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struct input_dev *dev = pinexio->dev;
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if (INEXIO_FORMAT_LENGTH == ++pinexio->idx) {
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input_report_abs(dev, ABS_X, INEXIO_GET_XC(pinexio->data));
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input_report_abs(dev, ABS_Y, INEXIO_GET_YC(pinexio->data));
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input_report_key(dev, BTN_TOUCH, INEXIO_GET_TOUCHED(pinexio->data));
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input_sync(dev);
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pinexio->idx = 0;
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}
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}
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static irqreturn_t inexio_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct inexio *pinexio = serio_get_drvdata(serio);
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pinexio->data[pinexio->idx] = data;
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if (INEXIO_RESPONSE_BEGIN_BYTE&pinexio->data[0])
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inexio_process_data(pinexio);
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else
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printk(KERN_DEBUG "inexio.c: unknown/unsynchronized data from device, byte %x\n",pinexio->data[0]);
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return IRQ_HANDLED;
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}
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/*
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* inexio_disconnect() is the opposite of inexio_connect()
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*/
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static void inexio_disconnect(struct serio *serio)
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{
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struct inexio *pinexio = serio_get_drvdata(serio);
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input_get_device(pinexio->dev);
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input_unregister_device(pinexio->dev);
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serio_close(serio);
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serio_set_drvdata(serio, NULL);
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input_put_device(pinexio->dev);
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kfree(pinexio);
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}
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/*
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* inexio_connect() is the routine that is called when someone adds a
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* new serio device that supports iNexio protocol and registers it as
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* an input device. This is usually accomplished using inputattach.
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*/
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static int inexio_connect(struct serio *serio, struct serio_driver *drv)
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{
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struct inexio *pinexio;
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struct input_dev *input_dev;
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int err;
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pinexio = kzalloc_obj(*pinexio);
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input_dev = input_allocate_device();
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if (!pinexio || !input_dev) {
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err = -ENOMEM;
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goto fail1;
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}
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pinexio->serio = serio;
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pinexio->dev = input_dev;
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scnprintf(pinexio->phys, sizeof(pinexio->phys), "%s/input0", serio->phys);
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input_dev->name = "iNexio Serial TouchScreen";
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input_dev->phys = pinexio->phys;
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input_dev->id.bustype = BUS_RS232;
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input_dev->id.vendor = SERIO_INEXIO;
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input_dev->id.product = 0;
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input_dev->id.version = 0x0001;
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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(pinexio->dev, ABS_X, INEXIO_MIN_XC, INEXIO_MAX_XC, 0, 0);
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input_set_abs_params(pinexio->dev, ABS_Y, INEXIO_MIN_YC, INEXIO_MAX_YC, 0, 0);
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serio_set_drvdata(serio, pinexio);
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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(pinexio->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(pinexio);
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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 inexio_serio_ids[] = {
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{
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.type = SERIO_RS232,
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.proto = SERIO_INEXIO,
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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, inexio_serio_ids);
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static struct serio_driver inexio_drv = {
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.driver = {
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.name = "inexio",
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},
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.description = DRIVER_DESC,
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.id_table = inexio_serio_ids,
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.interrupt = inexio_interrupt,
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.connect = inexio_connect,
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.disconnect = inexio_disconnect,
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};
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module_serio_driver(inexio_drv);
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