Input: add HTC Shift Touchscreen Driver
Signed-off-by: Pau Oliva Fora <pau@eslack.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Pau Oliva Fora
Dmitry Torokhov
parent
c3a34f4390
commit
5a18c343a6
4 changed files with 274 additions and 0 deletions
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@ -1928,6 +1928,12 @@ M: mikulas@artax.karlin.mff.cuni.cz
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W: http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi
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S: Maintained
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HTCPEN TOUCHSCREEN DRIVER
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P: Pau Oliva Fora
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M: pof@eslack.org
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L: linux-input@vger.kernel.org
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S: Maintained
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HUGETLB FILESYSTEM
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P: William Irwin
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M: wli@holomorphy.com
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@ -134,6 +134,18 @@ config TOUCHSCREEN_HP7XX
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To compile this driver as a module, choose M here: the
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module will be called jornada720_ts.
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config TOUCHSCREEN_HTCPEN
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tristate "HTC Shift X9500 touchscreen"
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depends on ISA
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help
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Say Y here if you have an HTC Shift UMPC also known as HTC X9500
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Clio / Shangrila and want to support the built-in touchscreen.
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If unsure, say N.
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To compile this driver as a module, choose M here: the
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module will be called htcpen.
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config TOUCHSCREEN_PENMOUNT
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tristate "Penmount serial touchscreen"
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select SERIO
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@ -17,6 +17,7 @@ obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o
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obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o
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obj-$(CONFIG_TOUCHSCREEN_HP600) += hp680_ts_input.o
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obj-$(CONFIG_TOUCHSCREEN_HP7XX) += jornada720_ts.o
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obj-$(CONFIG_TOUCHSCREEN_HTCPEN) += htcpen.o
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obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o
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obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o
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obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
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255
drivers/input/touchscreen/htcpen.c
Normal file
255
drivers/input/touchscreen/htcpen.c
Normal file
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@ -0,0 +1,255 @@
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/*
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* HTC Shift touchscreen driver
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*
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* Copyright (C) 2008 Pau Oliva Fora <pof@eslack.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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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/input.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/isa.h>
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#include <linux/ioport.h>
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#include <linux/dmi.h>
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MODULE_AUTHOR("Pau Oliva Fora <pau@eslack.org>");
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MODULE_DESCRIPTION("HTC Shift touchscreen driver");
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MODULE_LICENSE("GPL");
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#define HTCPEN_PORT_IRQ_CLEAR 0x068
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#define HTCPEN_PORT_INIT 0x06c
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#define HTCPEN_PORT_INDEX 0x0250
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#define HTCPEN_PORT_DATA 0x0251
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#define HTCPEN_IRQ 3
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#define DEVICE_ENABLE 0xa2
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#define DEVICE_DISABLE 0xa3
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#define X_INDEX 3
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#define Y_INDEX 5
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#define TOUCH_INDEX 0xb
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#define LSB_XY_INDEX 0xc
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#define X_AXIS_MAX 2040
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#define Y_AXIS_MAX 2040
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static int invert_x;
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module_param(invert_x, bool, 0644);
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MODULE_PARM_DESC(invert_x, "If set, X axis is inverted");
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static int invert_y;
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module_param(invert_y, bool, 0644);
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MODULE_PARM_DESC(invert_y, "If set, Y axis is inverted");
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static struct pnp_device_id pnp_ids[] = {
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{ .id = "PNP0cc0" },
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{ .id = "" }
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};
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MODULE_DEVICE_TABLE(pnp, pnp_ids);
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static irqreturn_t htcpen_interrupt(int irq, void *handle)
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{
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struct input_dev *htcpen_dev = handle;
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unsigned short x, y, xy;
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/* 0 = press; 1 = release */
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outb_p(TOUCH_INDEX, HTCPEN_PORT_INDEX);
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if (inb_p(HTCPEN_PORT_DATA)) {
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input_report_key(htcpen_dev, BTN_TOUCH, 0);
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} else {
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outb_p(X_INDEX, HTCPEN_PORT_INDEX);
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x = inb_p(HTCPEN_PORT_DATA);
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outb_p(Y_INDEX, HTCPEN_PORT_INDEX);
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y = inb_p(HTCPEN_PORT_DATA);
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outb_p(LSB_XY_INDEX, HTCPEN_PORT_INDEX);
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xy = inb_p(HTCPEN_PORT_DATA);
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/* get high resolution value of X and Y using LSB */
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x = X_AXIS_MAX - ((x * 8) + ((xy >> 4) & 0xf));
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y = (y * 8) + (xy & 0xf);
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if (invert_x)
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x = X_AXIS_MAX - x;
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if (invert_y)
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y = Y_AXIS_MAX - y;
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if (x != X_AXIS_MAX && x != 0) {
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input_report_key(htcpen_dev, BTN_TOUCH, 1);
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input_report_abs(htcpen_dev, ABS_X, x);
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input_report_abs(htcpen_dev, ABS_Y, y);
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}
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}
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input_sync(htcpen_dev);
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inb_p(HTCPEN_PORT_IRQ_CLEAR);
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return IRQ_HANDLED;
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}
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static int htcpen_open(struct input_dev *dev)
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{
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outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT);
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return 0;
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}
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static void htcpen_close(struct input_dev *dev)
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{
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outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT);
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synchronize_irq(HTCPEN_IRQ);
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}
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static int __devinit htcpen_isa_probe(struct device *dev, unsigned int id)
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{
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struct input_dev *htcpen_dev;
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int err = -EBUSY;
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if (!request_region(HTCPEN_PORT_IRQ_CLEAR, 1, "htcpen")) {
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printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
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HTCPEN_PORT_IRQ_CLEAR);
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goto request_region1_failed;
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}
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if (!request_region(HTCPEN_PORT_INIT, 1, "htcpen")) {
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printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
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HTCPEN_PORT_INIT);
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goto request_region2_failed;
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}
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if (!request_region(HTCPEN_PORT_INDEX, 2, "htcpen")) {
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printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
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HTCPEN_PORT_INDEX);
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goto request_region3_failed;
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}
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htcpen_dev = input_allocate_device();
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if (!htcpen_dev) {
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printk(KERN_ERR "htcpen: can't allocate device\n");
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err = -ENOMEM;
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goto input_alloc_failed;
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}
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htcpen_dev->name = "HTC Shift EC TouchScreen";
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htcpen_dev->id.bustype = BUS_ISA;
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htcpen_dev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
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htcpen_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
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input_set_abs_params(htcpen_dev, ABS_X, 0, X_AXIS_MAX, 0, 0);
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input_set_abs_params(htcpen_dev, ABS_Y, 0, Y_AXIS_MAX, 0, 0);
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htcpen_dev->open = htcpen_open;
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htcpen_dev->close = htcpen_close;
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err = request_irq(HTCPEN_IRQ, htcpen_interrupt, 0, "htcpen",
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htcpen_dev);
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if (err) {
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printk(KERN_ERR "htcpen: irq busy\n");
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goto request_irq_failed;
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}
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inb_p(HTCPEN_PORT_IRQ_CLEAR);
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err = input_register_device(htcpen_dev);
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if (err)
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goto input_register_failed;
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dev_set_drvdata(dev, htcpen_dev);
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return 0;
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input_register_failed:
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free_irq(HTCPEN_IRQ, htcpen_dev);
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request_irq_failed:
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input_free_device(htcpen_dev);
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input_alloc_failed:
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release_region(HTCPEN_PORT_INDEX, 2);
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request_region3_failed:
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release_region(HTCPEN_PORT_INIT, 1);
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request_region2_failed:
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release_region(HTCPEN_PORT_IRQ_CLEAR, 1);
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request_region1_failed:
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return err;
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}
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static int __devexit htcpen_isa_remove(struct device *dev, unsigned int id)
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{
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struct input_dev *htcpen_dev = dev_get_drvdata(dev);
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input_unregister_device(htcpen_dev);
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free_irq(HTCPEN_IRQ, htcpen_dev);
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release_region(HTCPEN_PORT_INDEX, 2);
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release_region(HTCPEN_PORT_INIT, 1);
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release_region(HTCPEN_PORT_IRQ_CLEAR, 1);
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dev_set_drvdata(dev, NULL);
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return 0;
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}
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#ifdef CONFIG_PM
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static int htcpen_isa_suspend(struct device *dev, unsigned int n,
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pm_message_t state)
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{
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outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT);
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return 0;
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}
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static int htcpen_isa_resume(struct device *dev, unsigned int n)
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{
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outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT);
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return 0;
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}
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#endif
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static struct isa_driver htcpen_isa_driver = {
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.probe = htcpen_isa_probe,
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.remove = __devexit_p(htcpen_isa_remove),
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#ifdef CONFIG_PM
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.suspend = htcpen_isa_suspend,
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.resume = htcpen_isa_resume,
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#endif
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.driver = {
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.owner = THIS_MODULE,
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.name = "htcpen",
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}
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};
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static struct dmi_system_id __initdata htcshift_dmi_table[] = {
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{
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.ident = "Shift",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "High Tech Computer Corp"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Shift"),
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},
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},
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{ }
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};
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static int __init htcpen_isa_init(void)
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{
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if (!dmi_check_system(htcshift_dmi_table))
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return -ENODEV;
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return isa_register_driver(&htcpen_isa_driver, 1);
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}
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static void __exit htcpen_isa_exit(void)
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{
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isa_unregister_driver(&htcpen_isa_driver);
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}
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module_init(htcpen_isa_init);
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module_exit(htcpen_isa_exit);
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