[linux-2.6-block.git] / drivers / input / mouse / trackpoint.c

/*
 * Stephen Evanchik <evanchsa@gmail.com>
 *
 * 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.
 *
 * Trademarks are the property of their respective owners.
 */

#include <linux/delay.h>
#include <linux/serio.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/input.h>
#include <linux/libps2.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include "psmouse.h"
#include "trackpoint.h"

PSMOUSE_DEFINE_ATTR(sensitivity);
PSMOUSE_DEFINE_ATTR(speed);
PSMOUSE_DEFINE_ATTR(inertia);
PSMOUSE_DEFINE_ATTR(reach);
PSMOUSE_DEFINE_ATTR(draghys);
PSMOUSE_DEFINE_ATTR(mindrag);
PSMOUSE_DEFINE_ATTR(thresh);
PSMOUSE_DEFINE_ATTR(upthresh);
PSMOUSE_DEFINE_ATTR(ztime);
PSMOUSE_DEFINE_ATTR(jenks);
PSMOUSE_DEFINE_ATTR(press_to_select);
PSMOUSE_DEFINE_ATTR(skipback);
PSMOUSE_DEFINE_ATTR(ext_dev);

#define MAKE_ATTR_READ(_item) \
	static ssize_t psmouse_attr_show_##_item(struct psmouse *psmouse, char *buf) \
	{ \
		struct trackpoint_data *tp = psmouse->private; \
		return sprintf(buf, "%lu\n", (unsigned long)tp->_item); \
	}

#define MAKE_ATTR_WRITE(_item, command) \
	static ssize_t psmouse_attr_set_##_item(struct psmouse *psmouse, const char *buf, size_t count) \
	{ \
		char *rest; \
		unsigned long value; \
		struct trackpoint_data *tp = psmouse->private; \
		value = simple_strtoul(buf, &rest, 10); \
		if (*rest) \
			return -EINVAL; \
		tp->_item = value; \
		trackpoint_write(&psmouse->ps2dev, command, tp->_item); \
		return count; \
	}

#define MAKE_ATTR_TOGGLE(_item, command, mask) \
	static ssize_t psmouse_attr_set_##_item(struct psmouse *psmouse, const char *buf, size_t count) \
	{ \
		unsigned char toggle; \
		struct trackpoint_data *tp = psmouse->private; \
		toggle = (buf[0] == '1') ? 1 : 0; \
		if (toggle != tp->_item) { \
			tp->_item = toggle; \
			trackpoint_toggle_bit(&psmouse->ps2dev, command, mask); \
		} \
		return count; \
	}

/*
 * Device IO: read, write and toggle bit
 */
static int trackpoint_read(struct ps2dev *ps2dev, unsigned char loc, unsigned char *results)
{
	if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
	    ps2_command(ps2dev, results, MAKE_PS2_CMD(0, 1, loc))) {
		return -1;
	}

	return 0;
}

static int trackpoint_write(struct ps2dev *ps2dev, unsigned char loc, unsigned char val)
{
	if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
	    ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_WRITE_MEM)) ||
	    ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) ||
	    ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, val))) {
		return -1;
	}

	return 0;
}

static int trackpoint_toggle_bit(struct ps2dev *ps2dev, unsigned char loc, unsigned char mask)
{
	/* Bad things will happen if the loc param isn't in this range */
	if (loc < 0x20 || loc >= 0x2F)
		return -1;

	if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
	    ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_TOGGLE)) ||
	    ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) ||
	    ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, mask))) {
		return -1;
	}

	return 0;
}

MAKE_ATTR_WRITE(sensitivity, TP_SENS);
MAKE_ATTR_READ(sensitivity);

MAKE_ATTR_WRITE(speed, TP_SPEED);
MAKE_ATTR_READ(speed);

MAKE_ATTR_WRITE(inertia, TP_INERTIA);
MAKE_ATTR_READ(inertia);

MAKE_ATTR_WRITE(reach, TP_REACH);
MAKE_ATTR_READ(reach);

MAKE_ATTR_WRITE(draghys, TP_DRAGHYS);
MAKE_ATTR_READ(draghys);

MAKE_ATTR_WRITE(mindrag, TP_MINDRAG);
MAKE_ATTR_READ(mindrag);

MAKE_ATTR_WRITE(thresh, TP_THRESH);
MAKE_ATTR_READ(thresh);

MAKE_ATTR_WRITE(upthresh, TP_UP_THRESH);
MAKE_ATTR_READ(upthresh);

MAKE_ATTR_WRITE(ztime, TP_Z_TIME);
MAKE_ATTR_READ(ztime);

MAKE_ATTR_WRITE(jenks, TP_JENKS_CURV);
MAKE_ATTR_READ(jenks);

MAKE_ATTR_TOGGLE(press_to_select, TP_TOGGLE_PTSON, TP_MASK_PTSON);
MAKE_ATTR_READ(press_to_select);

MAKE_ATTR_TOGGLE(skipback, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK);
MAKE_ATTR_READ(skipback);

MAKE_ATTR_TOGGLE(ext_dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV);
MAKE_ATTR_READ(ext_dev);

static struct attribute *trackpoint_attrs[] = {
	&psmouse_attr_sensitivity.attr,
	&psmouse_attr_speed.attr,
	&psmouse_attr_inertia.attr,
	&psmouse_attr_reach.attr,
	&psmouse_attr_draghys.attr,
	&psmouse_attr_mindrag.attr,
	&psmouse_attr_thresh.attr,
	&psmouse_attr_upthresh.attr,
	&psmouse_attr_ztime.attr,
	&psmouse_attr_jenks.attr,
	&psmouse_attr_press_to_select.attr,
	&psmouse_attr_skipback.attr,
	&psmouse_attr_ext_dev.attr,
	NULL
};

static struct attribute_group trackpoint_attr_group = {
	.attrs = trackpoint_attrs,
};

static void trackpoint_disconnect(struct psmouse *psmouse)
{
	sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, &trackpoint_attr_group);

	kfree(psmouse->private);
	psmouse->private = NULL;
}

static int trackpoint_sync(struct psmouse *psmouse)
{
	unsigned char toggle;
	struct trackpoint_data *tp = psmouse->private;

	if (!tp)
		return -1;

	/* Disable features that may make device unusable with this driver */
	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, &toggle);
	if (toggle & TP_MASK_TWOHAND)
		trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, TP_MASK_TWOHAND);

	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, &toggle);
	if (toggle & TP_MASK_SOURCE_TAG)
		trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, TP_MASK_SOURCE_TAG);

	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_MB, &toggle);
	if (toggle & TP_MASK_MB)
		trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_MB, TP_MASK_MB);

	/* Push the config to the device */
	trackpoint_write(&psmouse->ps2dev, TP_SENS, tp->sensitivity);
	trackpoint_write(&psmouse->ps2dev, TP_INERTIA, tp->inertia);
	trackpoint_write(&psmouse->ps2dev, TP_SPEED, tp->speed);

	trackpoint_write(&psmouse->ps2dev, TP_REACH, tp->reach);
	trackpoint_write(&psmouse->ps2dev, TP_DRAGHYS, tp->draghys);
	trackpoint_write(&psmouse->ps2dev, TP_MINDRAG, tp->mindrag);

	trackpoint_write(&psmouse->ps2dev, TP_THRESH, tp->thresh);
	trackpoint_write(&psmouse->ps2dev, TP_UP_THRESH, tp->upthresh);

	trackpoint_write(&psmouse->ps2dev, TP_Z_TIME, tp->ztime);
	trackpoint_write(&psmouse->ps2dev, TP_JENKS_CURV, tp->jenks);

	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_PTSON, &toggle);
	if (((toggle & TP_MASK_PTSON) == TP_MASK_PTSON) != tp->press_to_select)
		 trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_PTSON, TP_MASK_PTSON);

	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_SKIPBACK, &toggle);
	if (((toggle & TP_MASK_SKIPBACK) == TP_MASK_SKIPBACK) != tp->skipback)
		trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK);

	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_EXT_DEV, &toggle);
	if (((toggle & TP_MASK_EXT_DEV) == TP_MASK_EXT_DEV) != tp->ext_dev)
		trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV);

	return 0;
}

static void trackpoint_defaults(struct trackpoint_data *tp)
{
	tp->press_to_select = TP_DEF_PTSON;
	tp->sensitivity = TP_DEF_SENS;
	tp->speed = TP_DEF_SPEED;
	tp->reach = TP_DEF_REACH;

	tp->draghys = TP_DEF_DRAGHYS;
	tp->mindrag = TP_DEF_MINDRAG;

	tp->thresh = TP_DEF_THRESH;
	tp->upthresh = TP_DEF_UP_THRESH;

	tp->ztime = TP_DEF_Z_TIME;
	tp->jenks = TP_DEF_JENKS_CURV;

	tp->inertia = TP_DEF_INERTIA;
	tp->skipback = TP_DEF_SKIPBACK;
	tp->ext_dev = TP_DEF_EXT_DEV;
}

int trackpoint_detect(struct psmouse *psmouse, int set_properties)
{
	struct trackpoint_data *priv;
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	unsigned char firmware_id;
	unsigned char button_info;
	unsigned char param[2];

	param[0] = param[1] = 0;

	if (ps2_command(ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
		return -1;

	if (param[0] != TP_MAGIC_IDENT)
		return -1;

	if (!set_properties)
		return 0;

	firmware_id = param[1];

	if (trackpoint_read(&psmouse->ps2dev, TP_EXT_BTN, &button_info)) {
		printk(KERN_WARNING "trackpoint.c: failed to get extended button data\n");
		button_info = 0;
	}

	psmouse->private = priv = kcalloc(1, sizeof(struct trackpoint_data), GFP_KERNEL);
	if (!priv)
		return -1;

	psmouse->vendor = "IBM";
	psmouse->name = "TrackPoint";

	psmouse->reconnect = trackpoint_sync;
	psmouse->disconnect = trackpoint_disconnect;

	trackpoint_defaults(priv);
	trackpoint_sync(psmouse);

	sysfs_create_group(&ps2dev->serio->dev.kobj, &trackpoint_attr_group);

	printk(KERN_INFO "IBM TrackPoint firmware: 0x%02x, buttons: %d/%d\n",
		firmware_id, (button_info & 0xf0) >> 4, button_info & 0x0f);

	return 0;
}
Commit	Line	Data
541e316a SE	1	/*
	2	* Stephen Evanchik <evanchsa@gmail.com>
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License version 2 as published by
	6	* the Free Software Foundation.
	7	*
	8	* Trademarks are the property of their respective owners.
	9	*/
	10
	11	#include <linux/delay.h>
	12	#include <linux/serio.h>
	13	#include <linux/module.h>
	14	#include <linux/moduleparam.h>
	15	#include <linux/input.h>
	16	#include <linux/libps2.h>
	17	#include <linux/proc_fs.h>
	18	#include <asm/uaccess.h>
	19	#include "psmouse.h"
	20	#include "trackpoint.h"
	21
	22	PSMOUSE_DEFINE_ATTR(sensitivity);
	23	PSMOUSE_DEFINE_ATTR(speed);
	24	PSMOUSE_DEFINE_ATTR(inertia);
	25	PSMOUSE_DEFINE_ATTR(reach);
	26	PSMOUSE_DEFINE_ATTR(draghys);
	27	PSMOUSE_DEFINE_ATTR(mindrag);
	28	PSMOUSE_DEFINE_ATTR(thresh);
	29	PSMOUSE_DEFINE_ATTR(upthresh);
	30	PSMOUSE_DEFINE_ATTR(ztime);
	31	PSMOUSE_DEFINE_ATTR(jenks);
	32	PSMOUSE_DEFINE_ATTR(press_to_select);
	33	PSMOUSE_DEFINE_ATTR(skipback);
	34	PSMOUSE_DEFINE_ATTR(ext_dev);
	35
	36	#define MAKE_ATTR_READ(_item) \
	37	static ssize_t psmouse_attr_show_##_item(struct psmouse psmouse, char buf) \
	38	{ \
	39	struct trackpoint_data *tp = psmouse->private; \
	40	return sprintf(buf, "%lu\n", (unsigned long)tp->_item); \
	41	}
	42
	43	#define MAKE_ATTR_WRITE(_item, command) \
	44	static ssize_t psmouse_attr_set_##_item(struct psmouse psmouse, const char buf, size_t count) \
	45	{ \
	46	char *rest; \
	47	unsigned long value; \
	48	struct trackpoint_data *tp = psmouse->private; \
	49	value = simple_strtoul(buf, &rest, 10); \
	50	if (*rest) \
	51	return -EINVAL; \
	52	tp->_item = value; \
	53	trackpoint_write(&psmouse->ps2dev, command, tp->_item); \
	54	return count; \
	55	}
	56
	57	#define MAKE_ATTR_TOGGLE(_item, command, mask) \
	58	static ssize_t psmouse_attr_set_##_item(struct psmouse psmouse, const char buf, size_t count) \
	59	{ \
	60	unsigned char toggle; \
	61	struct trackpoint_data *tp = psmouse->private; \
	62	toggle = (buf[0] == '1') ? 1 : 0; \
	63	if (toggle != tp->_item) { \
	64	tp->_item = toggle; \
65	trackpoint_toggle_bit(&psmouse->ps2dev, command, mask); \
66	} \
67	return count; \
68	}
69
70	/*
71	* Device IO: read, write and toggle bit
72	*/
73	static int trackpoint_read(struct ps2dev ps2dev, unsigned char loc, unsigned char results)
74	{
75	if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) \|\|
76	ps2_command(ps2dev, results, MAKE_PS2_CMD(0, 1, loc))) {
77	return -1;
78	}
79
80	return 0;
81	}
82
83	static int trackpoint_write(struct ps2dev *ps2dev, unsigned char loc, unsigned char val)
84	{
85	if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) \|\|
86	ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_WRITE_MEM)) \|\|
87	ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) \|\|
88	ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, val))) {
89	return -1;
90	}
91
92	return 0;
93	}
94
95	static int trackpoint_toggle_bit(struct ps2dev *ps2dev, unsigned char loc, unsigned char mask)
96	{
97	/* Bad things will happen if the loc param isn't in this range */
98	if (loc < 0x20 \|\| loc >= 0x2F)
99	return -1;
100
101	if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) \|\|
102	ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_TOGGLE)) \|\|
103	ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) \|\|
104	ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, mask))) {
105	return -1;
106	}
107
108	return 0;
109	}
110
111	MAKE_ATTR_WRITE(sensitivity, TP_SENS);
112	MAKE_ATTR_READ(sensitivity);
113
114	MAKE_ATTR_WRITE(speed, TP_SPEED);
115	MAKE_ATTR_READ(speed);
116
117	MAKE_ATTR_WRITE(inertia, TP_INERTIA);
118	MAKE_ATTR_READ(inertia);
119
120	MAKE_ATTR_WRITE(reach, TP_REACH);
121	MAKE_ATTR_READ(reach);
122
123	MAKE_ATTR_WRITE(draghys, TP_DRAGHYS);
124	MAKE_ATTR_READ(draghys);
125
126	MAKE_ATTR_WRITE(mindrag, TP_MINDRAG);
127	MAKE_ATTR_READ(mindrag);
128
129	MAKE_ATTR_WRITE(thresh, TP_THRESH);
130	MAKE_ATTR_READ(thresh);
131
132	MAKE_ATTR_WRITE(upthresh, TP_UP_THRESH);
133	MAKE_ATTR_READ(upthresh);
134
135	MAKE_ATTR_WRITE(ztime, TP_Z_TIME);
136	MAKE_ATTR_READ(ztime);
137
138	MAKE_ATTR_WRITE(jenks, TP_JENKS_CURV);
139	MAKE_ATTR_READ(jenks);
140
141	MAKE_ATTR_TOGGLE(press_to_select, TP_TOGGLE_PTSON, TP_MASK_PTSON);
142	MAKE_ATTR_READ(press_to_select);
143
144	MAKE_ATTR_TOGGLE(skipback, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK);
145	MAKE_ATTR_READ(skipback);
146
147	MAKE_ATTR_TOGGLE(ext_dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV);
148	MAKE_ATTR_READ(ext_dev);
149
150	static struct attribute *trackpoint_attrs[] = {
151	&psmouse_attr_sensitivity.attr,
152	&psmouse_attr_speed.attr,
153	&psmouse_attr_inertia.attr,
154	&psmouse_attr_reach.attr,
155	&psmouse_attr_draghys.attr,
156	&psmouse_attr_mindrag.attr,
157	&psmouse_attr_thresh.attr,
158	&psmouse_attr_upthresh.attr,
159	&psmouse_attr_ztime.attr,
160	&psmouse_attr_jenks.attr,
161	&psmouse_attr_press_to_select.attr,
162	&psmouse_attr_skipback.attr,
163	&psmouse_attr_ext_dev.attr,
164	NULL
165	};
166
167	static struct attribute_group trackpoint_attr_group = {
168	.attrs = trackpoint_attrs,
169	};
170
171	static void trackpoint_disconnect(struct psmouse *psmouse)
172	{
173	sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, &trackpoint_attr_group);
174
175	kfree(psmouse->private);
176	psmouse->private = NULL;
177	}
178
179	static int trackpoint_sync(struct psmouse *psmouse)
180	{
181	unsigned char toggle;
182	struct trackpoint_data *tp = psmouse->private;
183
184	if (!tp)
185	return -1;
186
187	/* Disable features that may make device unusable with this driver */
188	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, &toggle);
189	if (toggle & TP_MASK_TWOHAND)
190	trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, TP_MASK_TWOHAND);
191
192	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, &toggle);
193	if (toggle & TP_MASK_SOURCE_TAG)
194	trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, TP_MASK_SOURCE_TAG);
195
196	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_MB, &toggle);
197	if (toggle & TP_MASK_MB)
198	trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_MB, TP_MASK_MB);
199
200	/* Push the config to the device */
201	trackpoint_write(&psmouse->ps2dev, TP_SENS, tp->sensitivity);
202	trackpoint_write(&psmouse->ps2dev, TP_INERTIA, tp->inertia);
203	trackpoint_write(&psmouse->ps2dev, TP_SPEED, tp->speed);
204
205	trackpoint_write(&psmouse->ps2dev, TP_REACH, tp->reach);
206	trackpoint_write(&psmouse->ps2dev, TP_DRAGHYS, tp->draghys);
207	trackpoint_write(&psmouse->ps2dev, TP_MINDRAG, tp->mindrag);
208
209	trackpoint_write(&psmouse->ps2dev, TP_THRESH, tp->thresh);
210	trackpoint_write(&psmouse->ps2dev, TP_UP_THRESH, tp->upthresh);
211
212	trackpoint_write(&psmouse->ps2dev, TP_Z_TIME, tp->ztime);
213	trackpoint_write(&psmouse->ps2dev, TP_JENKS_CURV, tp->jenks);
214
215	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_PTSON, &toggle);
216	if (((toggle & TP_MASK_PTSON) == TP_MASK_PTSON) != tp->press_to_select)
217	trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_PTSON, TP_MASK_PTSON);
218
219	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_SKIPBACK, &toggle);
220	if (((toggle & TP_MASK_SKIPBACK) == TP_MASK_SKIPBACK) != tp->skipback)
221	trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK);
222
223	trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_EXT_DEV, &toggle);
224	if (((toggle & TP_MASK_EXT_DEV) == TP_MASK_EXT_DEV) != tp->ext_dev)
225	trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV);
226
227	return 0;
228	}
229
230	static void trackpoint_defaults(struct trackpoint_data *tp)
231	{
232	tp->press_to_select = TP_DEF_PTSON;
233	tp->sensitivity = TP_DEF_SENS;
234	tp->speed = TP_DEF_SPEED;
235	tp->reach = TP_DEF_REACH;
236
237	tp->draghys = TP_DEF_DRAGHYS;
238	tp->mindrag = TP_DEF_MINDRAG;
239
240	tp->thresh = TP_DEF_THRESH;
241	tp->upthresh = TP_DEF_UP_THRESH;
242
243	tp->ztime = TP_DEF_Z_TIME;
244	tp->jenks = TP_DEF_JENKS_CURV;
245
246	tp->inertia = TP_DEF_INERTIA;
247	tp->skipback = TP_DEF_SKIPBACK;
248	tp->ext_dev = TP_DEF_EXT_DEV;
249	}
250
251	int trackpoint_detect(struct psmouse *psmouse, int set_properties)
252	{
253	struct trackpoint_data *priv;
254	struct ps2dev *ps2dev = &psmouse->ps2dev;
255	unsigned char firmware_id;
256	unsigned char button_info;
257	unsigned char param[2];
258
259	param[0] = param[1] = 0;
260
261	if (ps2_command(ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
262	return -1;
263
264	if (param[0] != TP_MAGIC_IDENT)
265	return -1;
266
267	if (!set_properties)
268	return 0;
269
270	firmware_id = param[1];
271
272	if (trackpoint_read(&psmouse->ps2dev, TP_EXT_BTN, &button_info)) {
273	printk(KERN_WARNING "trackpoint.c: failed to get extended button data\n");
274	button_info = 0;
275	}
276
277	psmouse->private = priv = kcalloc(1, sizeof(struct trackpoint_data), GFP_KERNEL);
278	if (!priv)
279	return -1;
280
281	psmouse->vendor = "IBM";
282	psmouse->name = "TrackPoint";
283
284	psmouse->reconnect = trackpoint_sync;
285	psmouse->disconnect = trackpoint_disconnect;
286
287	trackpoint_defaults(priv);
288	trackpoint_sync(psmouse);
289
290	sysfs_create_group(&ps2dev->serio->dev.kobj, &trackpoint_attr_group);
291
292	printk(KERN_INFO "IBM TrackPoint firmware: 0x%02x, buttons: %d/%d\n",
293	firmware_id, (button_info & 0xf0) >> 4, button_info & 0x0f);
294
295	return 0;
296	}
297