[PATCH 17/15] New set of input patches: serio open/close optional
From: Dmitry Torokhov
Date: Thu Apr 22 2004 - 01:58:00 EST
===================================================================
ChangeSet@xxxxxx, 2004-04-22 01:55:04-05:00, dtor_core@xxxxxxxxxxxxx
Input: make open and close serio methods optional
mouse/lbtouch.c | 203 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
mouse/lbtouch.h | 16 ++++
mouse/synaptics.c | 11 --
serio/parkbd.c | 11 --
serio/q40kbd.c | 11 --
serio/serio.c | 5 -
serio/serport.c | 10 --
7 files changed, 224 insertions(+), 43 deletions(-)
===================================================================
diff -Nru a/drivers/input/mouse/lbtouch.c b/drivers/input/mouse/lbtouch.c
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/drivers/input/mouse/lbtouch.c Thu Apr 22 01:55:34 2004
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2004 Dmitry Torokhov <dtor@xxxxxxx>
+ */
+
+/*
+ * Lifebook touchscreen driver for Linux
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+
+#include "psmouse.h"
+#include "lbtouch.h"
+
+MODULE_AUTHOR("Dmitry Torokhov <dtor@xxxxxxx>");
+MODULE_DESCRIPTION("Fujitsu Lifebook touchscreen driver");
+MODULE_LICENSE("GPL");
+
+/* The default values are taken from Kenan Esau's driver */
+static int limits[4] = { 86, 955, 37, 937 };
+static int num_limits __initdata = 0;
+module_param_array_named(lbt_size, limits, int, num_limits, 0);
+MODULE_PARM_DESC(lbt_size, "Effective usable area of Lifebook touchscreen (left,right,bottom,up)");
+
+
+/*****************************************************************************
+ * Lifebook pass-through PS/2 port support
+ ****************************************************************************/
+static int lbtouch_pt_write(struct serio *port, unsigned char c)
+{
+ switch (c) {
+ case PSMOUSE_CMD_RESET_BAT & 0xff:
+ serio_interrupt(port, PSMOUSE_RET_ACK, 0, NULL);
+ serio_interrupt(port, PSMOUSE_RET_BAT, 0, NULL);
+ serio_interrupt(port, PSMOUSE_RET_ID, 0, NULL);
+ break;
+
+ case PSMOUSE_CMD_GETID & 0xff:
+ serio_interrupt(port, PSMOUSE_RET_ACK, 0, NULL);
+ serio_interrupt(port, 0x00, 0, NULL);
+ break;
+
+ case PSMOUSE_CMD_ENABLE & 0xff:
+ case PSMOUSE_CMD_RESET_DIS & 0xff:
+ serio_interrupt(port, PSMOUSE_RET_ACK, 0, NULL);
+ break;
+
+ default:
+ serio_interrupt(port, PSMOUSE_RET_NAK, 0, NULL);
+ break;
+ }
+
+ return 0;
+}
+
+static void lbtouch_pass_pt_packet(struct serio *ptport, unsigned char *packet)
+{
+ struct psmouse *child = ptport->private;
+
+ if (child && child->state == PSMOUSE_ACTIVATED) {
+ serio_interrupt(ptport, packet[0], 0, NULL);
+ serio_interrupt(ptport, packet[1], 0, NULL);
+ serio_interrupt(ptport, packet[2], 0, NULL);
+ }
+}
+
+static void lbtouch_pt_create(struct psmouse *psmouse)
+{
+ struct psmouse_ptport *port;
+
+ psmouse->ptport = port = kmalloc(sizeof(struct psmouse_ptport), GFP_KERNEL);
+ if (!port) {
+ printk(KERN_ERR "lbtouch: not enough memory to allocate pass-through port\n");
+ return;
+ }
+
+ memset(port, 0, sizeof(struct psmouse_ptport));
+
+ port->serio.type = SERIO_PS_PSTHRU;
+ port->serio.name = "Lifebook pass-through";
+ port->serio.phys = "lbtouch-pt/serio0";
+ port->serio.write = lbtouch_pt_write;
+ port->serio.driver = psmouse;
+}
+
+/*****************************************************************************
+ * Functions to interpret the absolute mode packets
+ ****************************************************************************/
+
+static psmouse_ret_t lbtouch_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
+{
+ struct input_dev *dev = &psmouse->dev;
+ unsigned char *p = psmouse->packet;
+ int x, y, touch;
+
+ input_regs(dev, regs);
+
+ if (psmouse->pktcnt < 3)
+ return PSMOUSE_GOOD_DATA;
+
+ if (p[0] & 0x80) {
+ x = ((unsigned int)(p[0] & 0x30) << 4) + p[1];
+ y = ((unsigned int)(p[0] & 0xc0) << 2) + p[2];
+ touch = p[0] & 0x04 ? 1 : 0;
+
+ input_report_key(dev, BTN_TOUCH, touch);
+ if (touch) {
+ input_report_abs(dev, ABS_X, x - limits[0]);
+ input_report_abs(dev, ABS_Y, limits[3] + limits[3] - y);
+ }
+
+ if ((p[0] &= 0x03) != 0 && psmouse->ptport && psmouse->ptport->serio.dev) {
+ p[1] = p[2] = 0;
+ lbtouch_pass_pt_packet(&psmouse->ptport->serio, p);
+ }
+ } else if (psmouse->ptport && psmouse->ptport->serio.dev) {
+ lbtouch_pass_pt_packet(&psmouse->ptport->serio, p);
+ }
+
+ return PSMOUSE_FULL_PACKET;
+}
+
+/*****************************************************************************
+ * Driver initialization/cleanup functions
+ ****************************************************************************/
+
+static inline void set_abs_params(struct input_dev *dev, int axis, int min, int max, int fuzz, int flat)
+{
+ dev->absmin[axis] = min;
+ dev->absmax[axis] = max;
+ dev->absfuzz[axis] = fuzz;
+ dev->absflat[axis] = flat;
+
+ set_bit(axis, dev->absbit);
+}
+
+static void lbtouch_disconnect(struct psmouse *psmouse)
+{
+ unsigned char param[1];
+
+ param[0] = 0x06;
+
+ if (psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES) ||
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE) ||
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE) ||
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE))
+ printk(KERN_WARNING "lbtouch.c: Failed to restore touchscreen PS/2 emulation\n");
+}
+
+int lbtouch_init(struct psmouse *psmouse, int set_properties)
+{
+ unsigned char param[1];
+
+ if (psmouse->serio->type != SERIO_8042)
+ return 0;
+
+ param[0] = 0x07;
+ if (psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES) ||
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE) ||
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE) ||
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE)) {
+ printk(KERN_ERR "lbtouch.c: Failed to enable touchscreen native mode\n");
+ return 0;
+ }
+
+ if (set_properties) {
+ set_bit(EV_ABS, psmouse->dev.evbit);
+ set_abs_params(&psmouse->dev, ABS_X, limits[0], limits[1], 0, 0);
+ set_abs_params(&psmouse->dev, ABS_Y, limits[2], limits[3], 0, 0);
+
+ set_bit(EV_KEY, psmouse->dev.evbit);
+ set_bit(BTN_TOUCH, psmouse->dev.keybit);
+
+ clear_bit(EV_REL, psmouse->dev.evbit);
+ clear_bit(REL_X, psmouse->dev.relbit);
+ clear_bit(REL_Y, psmouse->dev.relbit);
+
+ psmouse->protocol_handler = lbtouch_process_byte;
+ psmouse->disconnect = lbtouch_disconnect;
+
+ lbtouch_pt_create(psmouse);
+ }
+
+ return 1;
+}
diff -Nru a/drivers/input/mouse/lbtouch.h b/drivers/input/mouse/lbtouch.h
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/drivers/input/mouse/lbtouch.h Thu Apr 22 01:55:34 2004
@@ -0,0 +1,16 @@
+/*
+ * Fujistsu Lifebook PS/2 touchscreen driver header
+ *
+ * Copyright (c) 2004 Dmitry Torokhov <dtor@xxxxxxx>
+ *
+ * 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.
+ */
+
+#ifndef _LBTOUCH_H
+#define _LBTOUCH_H
+
+int lbtouch_init(struct psmouse *psmouse, int set_properties);
+
+#endif
diff -Nru a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
--- a/drivers/input/mouse/synaptics.c Thu Apr 22 01:55:34 2004
+++ b/drivers/input/mouse/synaptics.c Thu Apr 22 01:55:34 2004
@@ -212,15 +212,6 @@
/*****************************************************************************
* Synaptics pass-through PS/2 port support
****************************************************************************/
-static int synaptics_pt_open(struct serio *port)
-{
- return 0;
-}
-
-static void synaptics_pt_close(struct serio *port)
-{
-}
-
static int synaptics_pt_write(struct serio *port, unsigned char c)
{
struct psmouse *parent = port->driver;
@@ -282,8 +273,6 @@
port->serio.name = "Synaptics pass-through";
port->serio.phys = "synaptics-pt/serio0";
port->serio.write = synaptics_pt_write;
- port->serio.open = synaptics_pt_open;
- port->serio.close = synaptics_pt_close;
port->serio.driver = psmouse;
port->activate = synaptics_pt_activate;
diff -Nru a/drivers/input/serio/parkbd.c b/drivers/input/serio/parkbd.c
--- a/drivers/input/serio/parkbd.c Thu Apr 22 01:55:34 2004
+++ b/drivers/input/serio/parkbd.c Thu Apr 22 01:55:34 2004
@@ -86,20 +86,9 @@
return 0;
}
-static int parkbd_open(struct serio *port)
-{
- return 0;
-}
-
-static void parkbd_close(struct serio *port)
-{
-}
-
static struct serio parkbd_port =
{
.write = parkbd_write,
- .open = parkbd_open,
- .close = parkbd_close,
.name = parkbd_name,
.phys = parkbd_phys,
};
diff -Nru a/drivers/input/serio/q40kbd.c b/drivers/input/serio/q40kbd.c
--- a/drivers/input/serio/q40kbd.c Thu Apr 22 01:55:34 2004
+++ b/drivers/input/serio/q40kbd.c Thu Apr 22 01:55:34 2004
@@ -47,23 +47,12 @@
MODULE_DESCRIPTION("Q40 PS/2 keyboard controller driver");
MODULE_LICENSE("GPL");
-
-static int q40kbd_open(struct serio *port)
-{
- return 0;
-}
-static void q40kbd_close(struct serio *port)
-{
-}
-
static struct serio q40kbd_port =
{
.type = SERIO_8042,
.name = "Q40 kbd port",
.phys = "Q40",
.write = NULL,
- .open = q40kbd_open,
- .close = q40kbd_close,
};
static irqreturn_t q40kbd_interrupt(int irq, void *dev_id,
diff -Nru a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
--- a/drivers/input/serio/serio.c Thu Apr 22 01:55:34 2004
+++ b/drivers/input/serio/serio.c Thu Apr 22 01:55:34 2004
@@ -293,7 +293,7 @@
int serio_open(struct serio *serio, struct serio_dev *dev)
{
serio->dev = dev;
- if (serio->open(serio)) {
+ if (serio->open && serio->open(serio)) {
serio->dev = NULL;
return -1;
}
@@ -303,7 +303,8 @@
/* called from serio_dev->connect/disconnect methods under serio_sem */
void serio_close(struct serio *serio)
{
- serio->close(serio);
+ if (serio->close)
+ serio->close(serio);
serio->dev = NULL;
}
diff -Nru a/drivers/input/serio/serport.c b/drivers/input/serio/serport.c
--- a/drivers/input/serio/serport.c Thu Apr 22 01:55:34 2004
+++ b/drivers/input/serio/serport.c Thu Apr 22 01:55:34 2004
@@ -48,11 +48,6 @@
return -(serport->tty->driver->write(serport->tty, 0, &data, 1) != 1);
}
-static int serport_serio_open(struct serio *serio)
-{
- return 0;
-}
-
static void serport_serio_close(struct serio *serio)
{
struct serport *serport = serio->driver;
@@ -87,7 +82,6 @@
serport->serio.type = SERIO_RS232;
serport->serio.write = serport_serio_write;
- serport->serio.open = serport_serio_open;
serport->serio.close = serport_serio_close;
serport->serio.driver = serport;
@@ -135,7 +129,7 @@
}
/*
- * serport_ldisc_read() just waits indefinitely if everything goes well.
+ * serport_ldisc_read() just waits indefinitely if everything goes well.
* However, when the serio driver closes the serio port, it finishes,
* returning 0 characters.
*/
@@ -165,7 +159,7 @@
static int serport_ldisc_ioctl(struct tty_struct * tty, struct file * file, unsigned int cmd, unsigned long arg)
{
struct serport *serport = (struct serport*) tty->disc_data;
-
+
if (cmd == SPIOCSTYPE)
return get_user(serport->serio.type, (unsigned long *) arg);
-
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