2 * TSC2005 touchscreen driver
4 * Copyright (C) 2006-2010 Nokia Corporation
6 * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
7 * based on TSC2301 driver by Klaus K. Pedersen <klaus.k.pedersen@nokia.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/input.h>
28 #include <linux/input/touchscreen.h>
29 #include <linux/interrupt.h>
30 #include <linux/delay.h>
33 #include <linux/spi/spi.h>
34 #include <linux/spi/tsc2005.h>
35 #include <linux/regulator/consumer.h>
36 #include <linux/regmap.h>
37 #include <linux/gpio/consumer.h>
40 * The touchscreen interface operates as follows:
42 * 1) Pen is pressed against the touchscreen.
43 * 2) TSC2005 performs AD conversion.
44 * 3) After the conversion is done TSC2005 drives DAV line down.
45 * 4) GPIO IRQ is received and tsc2005_irq_thread() is scheduled.
46 * 5) tsc2005_irq_thread() queues up an spi transfer to fetch the x, y, z1, z2
48 * 6) tsc2005_irq_thread() reports coordinates to input layer and sets up
49 * tsc2005_penup_timer() to be called after TSC2005_PENUP_TIME_MS (40ms).
50 * 7) When the penup timer expires, there have not been touch or DAV interrupts
51 * during the last 40ms which means the pen has been lifted.
53 * ESD recovery via a hardware reset is done if the TSC2005 doesn't respond
54 * after a configurable period (in ms) of activity. If esd_timeout is 0, the
55 * watchdog is disabled.
59 #define TSC2005_CMD 0x80
60 #define TSC2005_CMD_NORMAL 0x00
61 #define TSC2005_CMD_STOP 0x01
62 #define TSC2005_CMD_12BIT 0x04
65 #define TSC2005_REG_READ 0x01 /* R/W access */
66 #define TSC2005_REG_PND0 0x02 /* Power Not Down Control */
67 #define TSC2005_REG_X (0x0 << 3)
68 #define TSC2005_REG_Y (0x1 << 3)
69 #define TSC2005_REG_Z1 (0x2 << 3)
70 #define TSC2005_REG_Z2 (0x3 << 3)
71 #define TSC2005_REG_AUX (0x4 << 3)
72 #define TSC2005_REG_TEMP1 (0x5 << 3)
73 #define TSC2005_REG_TEMP2 (0x6 << 3)
74 #define TSC2005_REG_STATUS (0x7 << 3)
75 #define TSC2005_REG_AUX_HIGH (0x8 << 3)
76 #define TSC2005_REG_AUX_LOW (0x9 << 3)
77 #define TSC2005_REG_TEMP_HIGH (0xA << 3)
78 #define TSC2005_REG_TEMP_LOW (0xB << 3)
79 #define TSC2005_REG_CFR0 (0xC << 3)
80 #define TSC2005_REG_CFR1 (0xD << 3)
81 #define TSC2005_REG_CFR2 (0xE << 3)
82 #define TSC2005_REG_CONV_FUNC (0xF << 3)
84 /* configuration register 0 */
85 #define TSC2005_CFR0_PRECHARGE_276US 0x0040
86 #define TSC2005_CFR0_STABTIME_1MS 0x0300
87 #define TSC2005_CFR0_CLOCK_1MHZ 0x1000
88 #define TSC2005_CFR0_RESOLUTION12 0x2000
89 #define TSC2005_CFR0_PENMODE 0x8000
90 #define TSC2005_CFR0_INITVALUE (TSC2005_CFR0_STABTIME_1MS | \
91 TSC2005_CFR0_CLOCK_1MHZ | \
92 TSC2005_CFR0_RESOLUTION12 | \
93 TSC2005_CFR0_PRECHARGE_276US | \
96 /* bits common to both read and write of configuration register 0 */
97 #define TSC2005_CFR0_RW_MASK 0x3fff
99 /* configuration register 1 */
100 #define TSC2005_CFR1_BATCHDELAY_4MS 0x0003
101 #define TSC2005_CFR1_INITVALUE TSC2005_CFR1_BATCHDELAY_4MS
103 /* configuration register 2 */
104 #define TSC2005_CFR2_MAVE_Z 0x0004
105 #define TSC2005_CFR2_MAVE_Y 0x0008
106 #define TSC2005_CFR2_MAVE_X 0x0010
107 #define TSC2005_CFR2_AVG_7 0x0800
108 #define TSC2005_CFR2_MEDIUM_15 0x3000
109 #define TSC2005_CFR2_INITVALUE (TSC2005_CFR2_MAVE_X | \
110 TSC2005_CFR2_MAVE_Y | \
111 TSC2005_CFR2_MAVE_Z | \
112 TSC2005_CFR2_MEDIUM_15 | \
115 #define MAX_12BIT 0xfff
116 #define TSC2005_DEF_X_FUZZ 4
117 #define TSC2005_DEF_Y_FUZZ 8
118 #define TSC2005_DEF_P_FUZZ 2
119 #define TSC2005_DEF_RESISTOR 280
121 #define TSC2005_SPI_MAX_SPEED_HZ 10000000
122 #define TSC2005_PENUP_TIME_MS 40
124 static const struct regmap_range tsc2005_writable_ranges
[] = {
125 regmap_reg_range(TSC2005_REG_AUX_HIGH
, TSC2005_REG_CFR2
),
128 static const struct regmap_access_table tsc2005_writable_table
= {
129 .yes_ranges
= tsc2005_writable_ranges
,
130 .n_yes_ranges
= ARRAY_SIZE(tsc2005_writable_ranges
),
133 static struct regmap_config tsc2005_regmap_config
= {
137 .max_register
= 0x78,
138 .read_flag_mask
= TSC2005_REG_READ
,
139 .write_flag_mask
= TSC2005_REG_PND0
,
140 .wr_table
= &tsc2005_writable_table
,
141 .use_single_rw
= true,
144 struct tsc2005_data
{
150 #define TSC2005_DATA_REGS 4
153 struct spi_device
*spi
;
154 struct regmap
*regmap
;
156 struct input_dev
*idev
;
161 /* raw copy of previous x,y,z */
168 struct timer_list penup_timer
;
170 unsigned int esd_timeout
;
171 struct delayed_work esd_work
;
172 unsigned long last_valid_interrupt
;
174 unsigned int x_plate_ohm
;
181 struct regulator
*vio
;
183 struct gpio_desc
*reset_gpio
;
184 void (*set_reset
)(bool enable
);
187 static int tsc2005_cmd(struct tsc2005
*ts
, u8 cmd
)
189 u8 tx
= TSC2005_CMD
| TSC2005_CMD_12BIT
| cmd
;
190 struct spi_transfer xfer
= {
195 struct spi_message msg
;
198 spi_message_init(&msg
);
199 spi_message_add_tail(&xfer
, &msg
);
201 error
= spi_sync(ts
->spi
, &msg
);
203 dev_err(&ts
->spi
->dev
, "%s: failed, command: %x, error: %d\n",
204 __func__
, cmd
, error
);
211 static void tsc2005_update_pen_state(struct tsc2005
*ts
,
212 int x
, int y
, int pressure
)
215 input_report_abs(ts
->idev
, ABS_X
, x
);
216 input_report_abs(ts
->idev
, ABS_Y
, y
);
217 input_report_abs(ts
->idev
, ABS_PRESSURE
, pressure
);
219 input_report_key(ts
->idev
, BTN_TOUCH
, !!pressure
);
223 input_report_abs(ts
->idev
, ABS_PRESSURE
, 0);
225 input_report_key(ts
->idev
, BTN_TOUCH
, 0);
226 ts
->pen_down
= false;
229 input_sync(ts
->idev
);
230 dev_dbg(&ts
->spi
->dev
, "point(%4d,%4d), pressure (%4d)\n", x
, y
,
234 static irqreturn_t
tsc2005_irq_thread(int irq
, void *_ts
)
236 struct tsc2005
*ts
= _ts
;
238 unsigned int pressure
;
239 struct tsc2005_data tsdata
;
242 /* read the coordinates */
243 error
= regmap_bulk_read(ts
->regmap
, TSC2005_REG_X
, &tsdata
,
248 /* validate position */
249 if (unlikely(tsdata
.x
> MAX_12BIT
|| tsdata
.y
> MAX_12BIT
))
252 /* Skip reading if the pressure components are out of range */
253 if (unlikely(tsdata
.z1
== 0 || tsdata
.z2
> MAX_12BIT
))
255 if (unlikely(tsdata
.z1
>= tsdata
.z2
))
259 * Skip point if this is a pen down with the exact same values as
260 * the value before pen-up - that implies SPI fed us stale data
263 ts
->in_x
== tsdata
.x
&& ts
->in_y
== tsdata
.y
&&
264 ts
->in_z1
== tsdata
.z1
&& ts
->in_z2
== tsdata
.z2
) {
269 * At this point we are happy we have a valid and useful reading.
270 * Remember it for later comparisons. We may now begin downsampling.
274 ts
->in_z1
= tsdata
.z1
;
275 ts
->in_z2
= tsdata
.z2
;
277 /* Compute touch pressure resistance using equation #1 */
278 pressure
= tsdata
.x
* (tsdata
.z2
- tsdata
.z1
) / tsdata
.z1
;
279 pressure
= pressure
* ts
->x_plate_ohm
/ 4096;
280 if (unlikely(pressure
> MAX_12BIT
))
283 spin_lock_irqsave(&ts
->lock
, flags
);
285 tsc2005_update_pen_state(ts
, tsdata
.x
, tsdata
.y
, pressure
);
286 mod_timer(&ts
->penup_timer
,
287 jiffies
+ msecs_to_jiffies(TSC2005_PENUP_TIME_MS
));
289 spin_unlock_irqrestore(&ts
->lock
, flags
);
291 ts
->last_valid_interrupt
= jiffies
;
296 static void tsc2005_penup_timer(unsigned long data
)
298 struct tsc2005
*ts
= (struct tsc2005
*)data
;
301 spin_lock_irqsave(&ts
->lock
, flags
);
302 tsc2005_update_pen_state(ts
, 0, 0, 0);
303 spin_unlock_irqrestore(&ts
->lock
, flags
);
306 static void tsc2005_start_scan(struct tsc2005
*ts
)
308 regmap_write(ts
->regmap
, TSC2005_REG_CFR0
, TSC2005_CFR0_INITVALUE
);
309 regmap_write(ts
->regmap
, TSC2005_REG_CFR1
, TSC2005_CFR1_INITVALUE
);
310 regmap_write(ts
->regmap
, TSC2005_REG_CFR2
, TSC2005_CFR2_INITVALUE
);
311 tsc2005_cmd(ts
, TSC2005_CMD_NORMAL
);
314 static void tsc2005_stop_scan(struct tsc2005
*ts
)
316 tsc2005_cmd(ts
, TSC2005_CMD_STOP
);
319 static void tsc2005_set_reset(struct tsc2005
*ts
, bool enable
)
322 gpiod_set_value_cansleep(ts
->reset_gpio
, enable
);
323 else if (ts
->set_reset
)
324 ts
->set_reset(enable
);
327 /* must be called with ts->mutex held */
328 static void __tsc2005_disable(struct tsc2005
*ts
)
330 tsc2005_stop_scan(ts
);
332 disable_irq(ts
->spi
->irq
);
333 del_timer_sync(&ts
->penup_timer
);
335 cancel_delayed_work_sync(&ts
->esd_work
);
337 enable_irq(ts
->spi
->irq
);
340 /* must be called with ts->mutex held */
341 static void __tsc2005_enable(struct tsc2005
*ts
)
343 tsc2005_start_scan(ts
);
345 if (ts
->esd_timeout
&& (ts
->set_reset
|| ts
->reset_gpio
)) {
346 ts
->last_valid_interrupt
= jiffies
;
347 schedule_delayed_work(&ts
->esd_work
,
348 round_jiffies_relative(
349 msecs_to_jiffies(ts
->esd_timeout
)));
354 static ssize_t
tsc2005_selftest_show(struct device
*dev
,
355 struct device_attribute
*attr
,
358 struct tsc2005
*ts
= dev_get_drvdata(dev
);
359 unsigned int temp_high
;
360 unsigned int temp_high_orig
;
361 unsigned int temp_high_test
;
365 mutex_lock(&ts
->mutex
);
368 * Test TSC2005 communications via temp high register.
370 __tsc2005_disable(ts
);
372 error
= regmap_read(ts
->regmap
, TSC2005_REG_TEMP_HIGH
, &temp_high_orig
);
374 dev_warn(dev
, "selftest failed: read error %d\n", error
);
379 temp_high_test
= (temp_high_orig
- 1) & MAX_12BIT
;
381 error
= regmap_write(ts
->regmap
, TSC2005_REG_TEMP_HIGH
, temp_high_test
);
383 dev_warn(dev
, "selftest failed: write error %d\n", error
);
388 error
= regmap_read(ts
->regmap
, TSC2005_REG_TEMP_HIGH
, &temp_high
);
390 dev_warn(dev
, "selftest failed: read error %d after write\n",
396 if (temp_high
!= temp_high_test
) {
397 dev_warn(dev
, "selftest failed: %d != %d\n",
398 temp_high
, temp_high_test
);
403 tsc2005_set_reset(ts
, false);
404 usleep_range(100, 500); /* only 10us required */
405 tsc2005_set_reset(ts
, true);
410 /* test that the reset really happened */
411 error
= regmap_read(ts
->regmap
, TSC2005_REG_TEMP_HIGH
, &temp_high
);
413 dev_warn(dev
, "selftest failed: read error %d after reset\n",
419 if (temp_high
!= temp_high_orig
) {
420 dev_warn(dev
, "selftest failed after reset: %d != %d\n",
421 temp_high
, temp_high_orig
);
426 __tsc2005_enable(ts
);
427 mutex_unlock(&ts
->mutex
);
429 return sprintf(buf
, "%d\n", success
);
432 static DEVICE_ATTR(selftest
, S_IRUGO
, tsc2005_selftest_show
, NULL
);
434 static struct attribute
*tsc2005_attrs
[] = {
435 &dev_attr_selftest
.attr
,
439 static umode_t
tsc2005_attr_is_visible(struct kobject
*kobj
,
440 struct attribute
*attr
, int n
)
442 struct device
*dev
= container_of(kobj
, struct device
, kobj
);
443 struct tsc2005
*ts
= dev_get_drvdata(dev
);
444 umode_t mode
= attr
->mode
;
446 if (attr
== &dev_attr_selftest
.attr
) {
447 if (!ts
->set_reset
&& !ts
->reset_gpio
)
454 static const struct attribute_group tsc2005_attr_group
= {
455 .is_visible
= tsc2005_attr_is_visible
,
456 .attrs
= tsc2005_attrs
,
459 static void tsc2005_esd_work(struct work_struct
*work
)
461 struct tsc2005
*ts
= container_of(work
, struct tsc2005
, esd_work
.work
);
465 if (!mutex_trylock(&ts
->mutex
)) {
467 * If the mutex is taken, it means that disable or enable is in
468 * progress. In that case just reschedule the work. If the work
469 * is not needed, it will be canceled by disable.
474 if (time_is_after_jiffies(ts
->last_valid_interrupt
+
475 msecs_to_jiffies(ts
->esd_timeout
)))
478 /* We should be able to read register without disabling interrupts. */
479 error
= regmap_read(ts
->regmap
, TSC2005_REG_CFR0
, &r
);
481 !((r
^ TSC2005_CFR0_INITVALUE
) & TSC2005_CFR0_RW_MASK
)) {
486 * If we could not read our known value from configuration register 0
487 * then we should reset the controller as if from power-up and start
490 dev_info(&ts
->spi
->dev
, "TSC2005 not responding - resetting\n");
492 disable_irq(ts
->spi
->irq
);
493 del_timer_sync(&ts
->penup_timer
);
495 tsc2005_update_pen_state(ts
, 0, 0, 0);
497 tsc2005_set_reset(ts
, false);
498 usleep_range(100, 500); /* only 10us required */
499 tsc2005_set_reset(ts
, true);
501 enable_irq(ts
->spi
->irq
);
502 tsc2005_start_scan(ts
);
505 mutex_unlock(&ts
->mutex
);
507 /* re-arm the watchdog */
508 schedule_delayed_work(&ts
->esd_work
,
509 round_jiffies_relative(
510 msecs_to_jiffies(ts
->esd_timeout
)));
513 static int tsc2005_open(struct input_dev
*input
)
515 struct tsc2005
*ts
= input_get_drvdata(input
);
517 mutex_lock(&ts
->mutex
);
520 __tsc2005_enable(ts
);
524 mutex_unlock(&ts
->mutex
);
529 static void tsc2005_close(struct input_dev
*input
)
531 struct tsc2005
*ts
= input_get_drvdata(input
);
533 mutex_lock(&ts
->mutex
);
536 __tsc2005_disable(ts
);
540 mutex_unlock(&ts
->mutex
);
543 static int tsc2005_probe(struct spi_device
*spi
)
545 const struct tsc2005_platform_data
*pdata
= dev_get_platdata(&spi
->dev
);
546 struct device_node
*np
= spi
->dev
.of_node
;
549 struct input_dev
*input_dev
;
550 unsigned int max_x
= MAX_12BIT
;
551 unsigned int max_y
= MAX_12BIT
;
552 unsigned int max_p
= MAX_12BIT
;
553 unsigned int fudge_x
= TSC2005_DEF_X_FUZZ
;
554 unsigned int fudge_y
= TSC2005_DEF_Y_FUZZ
;
555 unsigned int fudge_p
= TSC2005_DEF_P_FUZZ
;
556 unsigned int x_plate_ohm
= TSC2005_DEF_RESISTOR
;
557 unsigned int esd_timeout
;
561 dev_err(&spi
->dev
, "no platform data\n");
566 dev_err(&spi
->dev
, "no irq\n");
571 fudge_x
= pdata
->ts_x_fudge
;
572 fudge_y
= pdata
->ts_y_fudge
;
573 fudge_p
= pdata
->ts_pressure_fudge
;
574 max_x
= pdata
->ts_x_max
;
575 max_y
= pdata
->ts_y_max
;
576 max_p
= pdata
->ts_pressure_max
;
577 x_plate_ohm
= pdata
->ts_x_plate_ohm
;
578 esd_timeout
= pdata
->esd_timeout_ms
;
580 x_plate_ohm
= TSC2005_DEF_RESISTOR
;
581 of_property_read_u32(np
, "ti,x-plate-ohms", &x_plate_ohm
);
583 of_property_read_u32(np
, "ti,esd-recovery-timeout-ms",
587 spi
->mode
= SPI_MODE_0
;
588 spi
->bits_per_word
= 8;
589 if (!spi
->max_speed_hz
)
590 spi
->max_speed_hz
= TSC2005_SPI_MAX_SPEED_HZ
;
592 error
= spi_setup(spi
);
596 ts
= devm_kzalloc(&spi
->dev
, sizeof(*ts
), GFP_KERNEL
);
600 input_dev
= devm_input_allocate_device(&spi
->dev
);
605 ts
->idev
= input_dev
;
607 ts
->regmap
= devm_regmap_init_spi(spi
, &tsc2005_regmap_config
);
608 if (IS_ERR(ts
->regmap
))
609 return PTR_ERR(ts
->regmap
);
611 ts
->x_plate_ohm
= x_plate_ohm
;
612 ts
->esd_timeout
= esd_timeout
;
614 ts
->reset_gpio
= devm_gpiod_get_optional(&spi
->dev
, "reset",
616 if (IS_ERR(ts
->reset_gpio
)) {
617 error
= PTR_ERR(ts
->reset_gpio
);
618 dev_err(&spi
->dev
, "error acquiring reset gpio: %d\n", error
);
622 ts
->vio
= devm_regulator_get_optional(&spi
->dev
, "vio");
623 if (IS_ERR(ts
->vio
)) {
624 error
= PTR_ERR(ts
->vio
);
625 dev_err(&spi
->dev
, "vio regulator missing (%d)", error
);
629 if (!ts
->reset_gpio
&& pdata
)
630 ts
->set_reset
= pdata
->set_reset
;
632 mutex_init(&ts
->mutex
);
634 spin_lock_init(&ts
->lock
);
635 setup_timer(&ts
->penup_timer
, tsc2005_penup_timer
, (unsigned long)ts
);
637 INIT_DELAYED_WORK(&ts
->esd_work
, tsc2005_esd_work
);
639 snprintf(ts
->phys
, sizeof(ts
->phys
),
640 "%s/input-ts", dev_name(&spi
->dev
));
642 input_dev
->name
= "TSC2005 touchscreen";
643 input_dev
->phys
= ts
->phys
;
644 input_dev
->id
.bustype
= BUS_SPI
;
645 input_dev
->dev
.parent
= &spi
->dev
;
646 input_dev
->evbit
[0] = BIT(EV_ABS
) | BIT(EV_KEY
);
647 input_dev
->keybit
[BIT_WORD(BTN_TOUCH
)] = BIT_MASK(BTN_TOUCH
);
649 input_set_abs_params(input_dev
, ABS_X
, 0, max_x
, fudge_x
, 0);
650 input_set_abs_params(input_dev
, ABS_Y
, 0, max_y
, fudge_y
, 0);
651 input_set_abs_params(input_dev
, ABS_PRESSURE
, 0, max_p
, fudge_p
, 0);
654 touchscreen_parse_properties(input_dev
, false);
656 input_dev
->open
= tsc2005_open
;
657 input_dev
->close
= tsc2005_close
;
659 input_set_drvdata(input_dev
, ts
);
661 /* Ensure the touchscreen is off */
662 tsc2005_stop_scan(ts
);
664 error
= devm_request_threaded_irq(&spi
->dev
, spi
->irq
, NULL
,
666 IRQF_TRIGGER_RISING
| IRQF_ONESHOT
,
669 dev_err(&spi
->dev
, "Failed to request irq, err: %d\n", error
);
673 /* enable regulator for DT */
675 error
= regulator_enable(ts
->vio
);
680 dev_set_drvdata(&spi
->dev
, ts
);
681 error
= sysfs_create_group(&spi
->dev
.kobj
, &tsc2005_attr_group
);
684 "Failed to create sysfs attributes, err: %d\n", error
);
685 goto disable_regulator
;
688 error
= input_register_device(ts
->idev
);
691 "Failed to register input device, err: %d\n", error
);
692 goto err_remove_sysfs
;
695 irq_set_irq_wake(spi
->irq
, 1);
699 sysfs_remove_group(&spi
->dev
.kobj
, &tsc2005_attr_group
);
702 regulator_disable(ts
->vio
);
706 static int tsc2005_remove(struct spi_device
*spi
)
708 struct tsc2005
*ts
= dev_get_drvdata(&spi
->dev
);
710 sysfs_remove_group(&spi
->dev
.kobj
, &tsc2005_attr_group
);
713 regulator_disable(ts
->vio
);
718 static int __maybe_unused
tsc2005_suspend(struct device
*dev
)
720 struct tsc2005
*ts
= dev_get_drvdata(dev
);
722 mutex_lock(&ts
->mutex
);
724 if (!ts
->suspended
&& ts
->opened
)
725 __tsc2005_disable(ts
);
727 ts
->suspended
= true;
729 mutex_unlock(&ts
->mutex
);
734 static int __maybe_unused
tsc2005_resume(struct device
*dev
)
736 struct tsc2005
*ts
= dev_get_drvdata(dev
);
738 mutex_lock(&ts
->mutex
);
740 if (ts
->suspended
&& ts
->opened
)
741 __tsc2005_enable(ts
);
743 ts
->suspended
= false;
745 mutex_unlock(&ts
->mutex
);
750 static SIMPLE_DEV_PM_OPS(tsc2005_pm_ops
, tsc2005_suspend
, tsc2005_resume
);
752 static struct spi_driver tsc2005_driver
= {
755 .pm
= &tsc2005_pm_ops
,
757 .probe
= tsc2005_probe
,
758 .remove
= tsc2005_remove
,
761 module_spi_driver(tsc2005_driver
);
763 MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>");
764 MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");
765 MODULE_LICENSE("GPL");
766 MODULE_ALIAS("spi:tsc2005");