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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/input/touchscreen/dynapro.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/input/touchscreen/dynapro.c')
-rw-r--r-- | kernel/drivers/input/touchscreen/dynapro.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/kernel/drivers/input/touchscreen/dynapro.c b/kernel/drivers/input/touchscreen/dynapro.c new file mode 100644 index 000000000..86237a910 --- /dev/null +++ b/kernel/drivers/input/touchscreen/dynapro.c @@ -0,0 +1,190 @@ +/* + * Dynapro serial touchscreen driver + * + * Copyright (c) 2009 Tias Guns + * Based on the inexio driver (c) Vojtech Pavlik and Dan Streetman and + * Richard Lemon + * + */ + +/* + * 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. + */ + +/* + * 2009/09/19 Tias Guns <tias@ulyssis.org> + * Copied inexio.c and edited for Dynapro protocol (from retired Xorg module) + */ + +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/serio.h> + +#define DRIVER_DESC "Dynapro serial touchscreen driver" + +MODULE_AUTHOR("Tias Guns <tias@ulyssis.org>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Definitions & global arrays. + */ + +#define DYNAPRO_FORMAT_TOUCH_BIT 0x40 +#define DYNAPRO_FORMAT_LENGTH 3 +#define DYNAPRO_RESPONSE_BEGIN_BYTE 0x80 + +#define DYNAPRO_MIN_XC 0 +#define DYNAPRO_MAX_XC 0x3ff +#define DYNAPRO_MIN_YC 0 +#define DYNAPRO_MAX_YC 0x3ff + +#define DYNAPRO_GET_XC(data) (data[1] | ((data[0] & 0x38) << 4)) +#define DYNAPRO_GET_YC(data) (data[2] | ((data[0] & 0x07) << 7)) +#define DYNAPRO_GET_TOUCHED(data) (DYNAPRO_FORMAT_TOUCH_BIT & data[0]) + +/* + * Per-touchscreen data. + */ + +struct dynapro { + struct input_dev *dev; + struct serio *serio; + int idx; + unsigned char data[DYNAPRO_FORMAT_LENGTH]; + char phys[32]; +}; + +static void dynapro_process_data(struct dynapro *pdynapro) +{ + struct input_dev *dev = pdynapro->dev; + + if (DYNAPRO_FORMAT_LENGTH == ++pdynapro->idx) { + input_report_abs(dev, ABS_X, DYNAPRO_GET_XC(pdynapro->data)); + input_report_abs(dev, ABS_Y, DYNAPRO_GET_YC(pdynapro->data)); + input_report_key(dev, BTN_TOUCH, + DYNAPRO_GET_TOUCHED(pdynapro->data)); + input_sync(dev); + + pdynapro->idx = 0; + } +} + +static irqreturn_t dynapro_interrupt(struct serio *serio, + unsigned char data, unsigned int flags) +{ + struct dynapro *pdynapro = serio_get_drvdata(serio); + + pdynapro->data[pdynapro->idx] = data; + + if (DYNAPRO_RESPONSE_BEGIN_BYTE & pdynapro->data[0]) + dynapro_process_data(pdynapro); + else + dev_dbg(&serio->dev, "unknown/unsynchronized data: %x\n", + pdynapro->data[0]); + + return IRQ_HANDLED; +} + +static void dynapro_disconnect(struct serio *serio) +{ + struct dynapro *pdynapro = serio_get_drvdata(serio); + + input_get_device(pdynapro->dev); + input_unregister_device(pdynapro->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + input_put_device(pdynapro->dev); + kfree(pdynapro); +} + +/* + * dynapro_connect() is the routine that is called when someone adds a + * new serio device that supports dynapro protocol and registers it as + * an input device. This is usually accomplished using inputattach. + */ + +static int dynapro_connect(struct serio *serio, struct serio_driver *drv) +{ + struct dynapro *pdynapro; + struct input_dev *input_dev; + int err; + + pdynapro = kzalloc(sizeof(struct dynapro), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!pdynapro || !input_dev) { + err = -ENOMEM; + goto fail1; + } + + pdynapro->serio = serio; + pdynapro->dev = input_dev; + snprintf(pdynapro->phys, sizeof(pdynapro->phys), + "%s/input0", serio->phys); + + input_dev->name = "Dynapro Serial TouchScreen"; + input_dev->phys = pdynapro->phys; + input_dev->id.bustype = BUS_RS232; + input_dev->id.vendor = SERIO_DYNAPRO; + input_dev->id.product = 0; + input_dev->id.version = 0x0001; + input_dev->dev.parent = &serio->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(pdynapro->dev, ABS_X, + DYNAPRO_MIN_XC, DYNAPRO_MAX_XC, 0, 0); + input_set_abs_params(pdynapro->dev, ABS_Y, + DYNAPRO_MIN_YC, DYNAPRO_MAX_YC, 0, 0); + + serio_set_drvdata(serio, pdynapro); + + err = serio_open(serio, drv); + if (err) + goto fail2; + + err = input_register_device(pdynapro->dev); + if (err) + goto fail3; + + return 0; + + fail3: serio_close(serio); + fail2: serio_set_drvdata(serio, NULL); + fail1: input_free_device(input_dev); + kfree(pdynapro); + return err; +} + +/* + * The serio driver structure. + */ + +static struct serio_device_id dynapro_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_DYNAPRO, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, dynapro_serio_ids); + +static struct serio_driver dynapro_drv = { + .driver = { + .name = "dynapro", + }, + .description = DRIVER_DESC, + .id_table = dynapro_serio_ids, + .interrupt = dynapro_interrupt, + .connect = dynapro_connect, + .disconnect = dynapro_disconnect, +}; + +module_serio_driver(dynapro_drv); |