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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-20 01:27:06 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-20 01:27:06 -0400
commita952baa034ae7c2e4a66932005cbc7ebbccfe28d (patch)
treeff5abe0c77f5b129946300677d9b57b00d926a1e /drivers/input/touchscreen
parent5bab188a316718a26346cdb25c4cc6b319f8f907 (diff)
parent97eb3f24352ec6632c2127b35d8087d2a809a9b9 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (64 commits) Input: tsc2005 - remove 'disable' sysfs attribute Input: tsc2005 - add open/close Input: tsc2005 - handle read errors from SPI layer Input: tsc2005 - do not rearm timer in hardirq handler Input: tsc2005 - don't use work for 'pen up' handling Input: tsc2005 - do not use 0 in place of NULL Input: tsc2005 - use true/false for boolean variables Input: tsc2005 - hide selftest attribute if we can't reset Input: tsc2005 - rework driver initialization code Input: tsc2005 - set up bus type in input device Input: tsc2005 - set up parent device Input: tsc2005 - clear driver data after unbinding Input: tsc2005 - add module description Input: tsc2005 - remove driver banner message Input: tsc2005 - remove incorrect module alias Input: tsc2005 - convert to using dev_pm_ops Input: tsc2005 - use spi_get/set_drvdata() Input: introduce tsc2005 driver Input: xen-kbdfront - move to drivers/input/misc Input: xen-kbdfront - add grant reference for shared page ...
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r--drivers/input/touchscreen/Kconfig45
-rw-r--r--drivers/input/touchscreen/Makefile4
-rw-r--r--drivers/input/touchscreen/ad7877.c19
-rw-r--r--drivers/input/touchscreen/ad7879-spi.c17
-rw-r--r--drivers/input/touchscreen/ads7846.c16
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c1211
-rw-r--r--drivers/input/touchscreen/qt602240_ts.c1406
-rw-r--r--drivers/input/touchscreen/tsc2005.c756
-rw-r--r--drivers/input/touchscreen/wm831x-ts.c368
9 files changed, 2399 insertions, 1443 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 61834ae282e..112ec55f293 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -86,6 +86,18 @@ config TOUCHSCREEN_AD7879_SPI
86 To compile this driver as a module, choose M here: the 86 To compile this driver as a module, choose M here: the
87 module will be called ad7879-spi. 87 module will be called ad7879-spi.
88 88
89config TOUCHSCREEN_ATMEL_MXT
90 tristate "Atmel mXT I2C Touchscreen"
91 depends on I2C
92 help
93 Say Y here if you have Atmel mXT series I2C touchscreen,
94 such as AT42QT602240/ATMXT224, connected to your system.
95
96 If unsure, say N.
97
98 To compile this driver as a module, choose M here: the
99 module will be called atmel_mxt_ts.
100
89config TOUCHSCREEN_BITSY 101config TOUCHSCREEN_BITSY
90 tristate "Compaq iPAQ H3600 (Bitsy) touchscreen" 102 tristate "Compaq iPAQ H3600 (Bitsy) touchscreen"
91 depends on SA1100_BITSY 103 depends on SA1100_BITSY
@@ -339,18 +351,6 @@ config TOUCHSCREEN_PENMOUNT
339 To compile this driver as a module, choose M here: the 351 To compile this driver as a module, choose M here: the
340 module will be called penmount. 352 module will be called penmount.
341 353
342config TOUCHSCREEN_QT602240
343 tristate "QT602240 I2C Touchscreen"
344 depends on I2C
345 help
346 Say Y here if you have the AT42QT602240/ATMXT224 I2C touchscreen
347 connected to your system.
348
349 If unsure, say N.
350
351 To compile this driver as a module, choose M here: the
352 module will be called qt602240_ts.
353
354config TOUCHSCREEN_MIGOR 354config TOUCHSCREEN_MIGOR
355 tristate "Renesas MIGO-R touchscreen" 355 tristate "Renesas MIGO-R touchscreen"
356 depends on SH_MIGOR && I2C 356 depends on SH_MIGOR && I2C
@@ -423,6 +423,16 @@ config TOUCHSCREEN_UCB1400
423 To compile this driver as a module, choose M here: the 423 To compile this driver as a module, choose M here: the
424 module will be called ucb1400_ts. 424 module will be called ucb1400_ts.
425 425
426config TOUCHSCREEN_WM831X
427 tristate "Support for WM831x touchscreen controllers"
428 depends on MFD_WM831X
429 help
430 This enables support for the touchscreen controller on the WM831x
431 series of PMICs.
432
433 To compile this driver as a module, choose M here: the
434 module will be called wm831x-ts.
435
426config TOUCHSCREEN_WM97XX 436config TOUCHSCREEN_WM97XX
427 tristate "Support for WM97xx AC97 touchscreen controllers" 437 tristate "Support for WM97xx AC97 touchscreen controllers"
428 depends on AC97_BUS 438 depends on AC97_BUS
@@ -629,6 +639,17 @@ config TOUCHSCREEN_TOUCHIT213
629 To compile this driver as a module, choose M here: the 639 To compile this driver as a module, choose M here: the
630 module will be called touchit213. 640 module will be called touchit213.
631 641
642config TOUCHSCREEN_TSC2005
643 tristate "TSC2005 based touchscreens"
644 depends on SPI_MASTER
645 help
646 Say Y here if you have a TSC2005 based touchscreen.
647
648 If unsure, say N.
649
650 To compile this driver as a module, choose M here: the
651 module will be called tsc2005.
652
632config TOUCHSCREEN_TSC2007 653config TOUCHSCREEN_TSC2007
633 tristate "TSC2007 based touchscreens" 654 tristate "TSC2007 based touchscreens"
634 depends on I2C 655 depends on I2C
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 718bcc81495..ca94098d4c9 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_TOUCHSCREEN_AD7879) += ad7879.o
12obj-$(CONFIG_TOUCHSCREEN_AD7879_I2C) += ad7879-i2c.o 12obj-$(CONFIG_TOUCHSCREEN_AD7879_I2C) += ad7879-i2c.o
13obj-$(CONFIG_TOUCHSCREEN_AD7879_SPI) += ad7879-spi.o 13obj-$(CONFIG_TOUCHSCREEN_AD7879_SPI) += ad7879-spi.o
14obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o 14obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o
15obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT) += atmel_mxt_ts.o
15obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) += atmel_tsadcc.o 16obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) += atmel_tsadcc.o
16obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o 17obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o
17obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o 18obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o
@@ -37,7 +38,6 @@ obj-$(CONFIG_TOUCHSCREEN_HTCPEN) += htcpen.o
37obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o 38obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o
38obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o 39obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o
39obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o 40obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o
40obj-$(CONFIG_TOUCHSCREEN_QT602240) += qt602240_ts.o
41obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o 41obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o
42obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o 42obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o
43obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o 43obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
@@ -45,9 +45,11 @@ obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
45obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o 45obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
46obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o 46obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
47obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o 47obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
48obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o
48obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o 49obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o
49obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o 50obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o
50obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o 51obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o
52obj-$(CONFIG_TOUCHSCREEN_WM831X) += wm831x-ts.o
51obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o 53obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o
52wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705) += wm9705.o 54wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705) += wm9705.o
53wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o 55wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o
diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index a1952fcc083..714d4e0f9f9 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -41,6 +41,7 @@
41#include <linux/delay.h> 41#include <linux/delay.h>
42#include <linux/input.h> 42#include <linux/input.h>
43#include <linux/interrupt.h> 43#include <linux/interrupt.h>
44#include <linux/pm.h>
44#include <linux/slab.h> 45#include <linux/slab.h>
45#include <linux/spi/spi.h> 46#include <linux/spi/spi.h>
46#include <linux/spi/ad7877.h> 47#include <linux/spi/ad7877.h>
@@ -826,39 +827,37 @@ static int __devexit ad7877_remove(struct spi_device *spi)
826 return 0; 827 return 0;
827} 828}
828 829
829#ifdef CONFIG_PM 830#ifdef CONFIG_PM_SLEEP
830static int ad7877_suspend(struct spi_device *spi, pm_message_t message) 831static int ad7877_suspend(struct device *dev)
831{ 832{
832 struct ad7877 *ts = dev_get_drvdata(&spi->dev); 833 struct ad7877 *ts = dev_get_drvdata(dev);
833 834
834 ad7877_disable(ts); 835 ad7877_disable(ts);
835 836
836 return 0; 837 return 0;
837} 838}
838 839
839static int ad7877_resume(struct spi_device *spi) 840static int ad7877_resume(struct device *dev)
840{ 841{
841 struct ad7877 *ts = dev_get_drvdata(&spi->dev); 842 struct ad7877 *ts = dev_get_drvdata(dev);
842 843
843 ad7877_enable(ts); 844 ad7877_enable(ts);
844 845
845 return 0; 846 return 0;
846} 847}
847#else
848#define ad7877_suspend NULL
849#define ad7877_resume NULL
850#endif 848#endif
851 849
850static SIMPLE_DEV_PM_OPS(ad7877_pm, ad7877_suspend, ad7877_resume);
851
852static struct spi_driver ad7877_driver = { 852static struct spi_driver ad7877_driver = {
853 .driver = { 853 .driver = {
854 .name = "ad7877", 854 .name = "ad7877",
855 .bus = &spi_bus_type, 855 .bus = &spi_bus_type,
856 .owner = THIS_MODULE, 856 .owner = THIS_MODULE,
857 .pm = &ad7877_pm,
857 }, 858 },
858 .probe = ad7877_probe, 859 .probe = ad7877_probe,
859 .remove = __devexit_p(ad7877_remove), 860 .remove = __devexit_p(ad7877_remove),
860 .suspend = ad7877_suspend,
861 .resume = ad7877_resume,
862}; 861};
863 862
864static int __init ad7877_init(void) 863static int __init ad7877_init(void)
diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c
index 59c6e68c432..ddf732f3caf 100644
--- a/drivers/input/touchscreen/ad7879-spi.c
+++ b/drivers/input/touchscreen/ad7879-spi.c
@@ -7,6 +7,7 @@
7 */ 7 */
8 8
9#include <linux/input.h> /* BUS_SPI */ 9#include <linux/input.h> /* BUS_SPI */
10#include <linux/pm.h>
10#include <linux/spi/spi.h> 11#include <linux/spi/spi.h>
11 12
12#include "ad7879.h" 13#include "ad7879.h"
@@ -20,9 +21,10 @@
20#define AD7879_WRITECMD(reg) (AD7879_CMD(reg)) 21#define AD7879_WRITECMD(reg) (AD7879_CMD(reg))
21#define AD7879_READCMD(reg) (AD7879_CMD(reg) | AD7879_CMD_READ) 22#define AD7879_READCMD(reg) (AD7879_CMD(reg) | AD7879_CMD_READ)
22 23
23#ifdef CONFIG_PM 24#ifdef CONFIG_PM_SLEEP
24static int ad7879_spi_suspend(struct spi_device *spi, pm_message_t message) 25static int ad7879_spi_suspend(struct device *dev)
25{ 26{
27 struct spi_device *spi = to_spi_device(dev);
26 struct ad7879 *ts = spi_get_drvdata(spi); 28 struct ad7879 *ts = spi_get_drvdata(spi);
27 29
28 ad7879_suspend(ts); 30 ad7879_suspend(ts);
@@ -30,19 +32,19 @@ static int ad7879_spi_suspend(struct spi_device *spi, pm_message_t message)
30 return 0; 32 return 0;
31} 33}
32 34
33static int ad7879_spi_resume(struct spi_device *spi) 35static int ad7879_spi_resume(struct device *dev)
34{ 36{
37 struct spi_device *spi = to_spi_device(dev);
35 struct ad7879 *ts = spi_get_drvdata(spi); 38 struct ad7879 *ts = spi_get_drvdata(spi);
36 39
37 ad7879_resume(ts); 40 ad7879_resume(ts);
38 41
39 return 0; 42 return 0;
40} 43}
41#else
42# define ad7879_spi_suspend NULL
43# define ad7879_spi_resume NULL
44#endif 44#endif
45 45
46static SIMPLE_DEV_PM_OPS(ad7879_spi_pm, ad7879_spi_suspend, ad7879_spi_resume);
47
46/* 48/*
47 * ad7879_read/write are only used for initial setup and for sysfs controls. 49 * ad7879_read/write are only used for initial setup and for sysfs controls.
48 * The main traffic is done in ad7879_collect(). 50 * The main traffic is done in ad7879_collect().
@@ -173,11 +175,10 @@ static struct spi_driver ad7879_spi_driver = {
173 .name = "ad7879", 175 .name = "ad7879",
174 .bus = &spi_bus_type, 176 .bus = &spi_bus_type,
175 .owner = THIS_MODULE, 177 .owner = THIS_MODULE,
178 .pm = &ad7879_spi_pm,
176 }, 179 },
177 .probe = ad7879_spi_probe, 180 .probe = ad7879_spi_probe,
178 .remove = __devexit_p(ad7879_spi_remove), 181 .remove = __devexit_p(ad7879_spi_remove),
179 .suspend = ad7879_spi_suspend,
180 .resume = ad7879_spi_resume,
181}; 182};
182 183
183static int __init ad7879_spi_init(void) 184static int __init ad7879_spi_init(void)
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 4bf2316e328..c24946f5125 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -26,6 +26,7 @@
26#include <linux/input.h> 26#include <linux/input.h>
27#include <linux/interrupt.h> 27#include <linux/interrupt.h>
28#include <linux/slab.h> 28#include <linux/slab.h>
29#include <linux/pm.h>
29#include <linux/gpio.h> 30#include <linux/gpio.h>
30#include <linux/spi/spi.h> 31#include <linux/spi/spi.h>
31#include <linux/spi/ads7846.h> 32#include <linux/spi/ads7846.h>
@@ -892,9 +893,10 @@ static irqreturn_t ads7846_irq(int irq, void *handle)
892 return IRQ_HANDLED; 893 return IRQ_HANDLED;
893} 894}
894 895
895static int ads7846_suspend(struct spi_device *spi, pm_message_t message) 896#ifdef CONFIG_PM_SLEEP
897static int ads7846_suspend(struct device *dev)
896{ 898{
897 struct ads7846 *ts = dev_get_drvdata(&spi->dev); 899 struct ads7846 *ts = dev_get_drvdata(dev);
898 900
899 mutex_lock(&ts->lock); 901 mutex_lock(&ts->lock);
900 902
@@ -914,9 +916,9 @@ static int ads7846_suspend(struct spi_device *spi, pm_message_t message)
914 return 0; 916 return 0;
915} 917}
916 918
917static int ads7846_resume(struct spi_device *spi) 919static int ads7846_resume(struct device *dev)
918{ 920{
919 struct ads7846 *ts = dev_get_drvdata(&spi->dev); 921 struct ads7846 *ts = dev_get_drvdata(dev);
920 922
921 mutex_lock(&ts->lock); 923 mutex_lock(&ts->lock);
922 924
@@ -935,6 +937,9 @@ static int ads7846_resume(struct spi_device *spi)
935 937
936 return 0; 938 return 0;
937} 939}
940#endif
941
942static SIMPLE_DEV_PM_OPS(ads7846_pm, ads7846_suspend, ads7846_resume);
938 943
939static int __devinit ads7846_setup_pendown(struct spi_device *spi, struct ads7846 *ts) 944static int __devinit ads7846_setup_pendown(struct spi_device *spi, struct ads7846 *ts)
940{ 945{
@@ -1408,11 +1413,10 @@ static struct spi_driver ads7846_driver = {
1408 .name = "ads7846", 1413 .name = "ads7846",
1409 .bus = &spi_bus_type, 1414 .bus = &spi_bus_type,
1410 .owner = THIS_MODULE, 1415 .owner = THIS_MODULE,
1416 .pm = &ads7846_pm,
1411 }, 1417 },
1412 .probe = ads7846_probe, 1418 .probe = ads7846_probe,
1413 .remove = __devexit_p(ads7846_remove), 1419 .remove = __devexit_p(ads7846_remove),
1414 .suspend = ads7846_suspend,
1415 .resume = ads7846_resume,
1416}; 1420};
1417 1421
1418static int __init ads7846_init(void) 1422static int __init ads7846_init(void)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
new file mode 100644
index 00000000000..4012436633b
--- /dev/null
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -0,0 +1,1211 @@
1/*
2 * Atmel maXTouch Touchscreen driver
3 *
4 * Copyright (C) 2010 Samsung Electronics Co.Ltd
5 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/delay.h>
17#include <linux/firmware.h>
18#include <linux/i2c.h>
19#include <linux/i2c/atmel_mxt_ts.h>
20#include <linux/input.h>
21#include <linux/interrupt.h>
22#include <linux/slab.h>
23
24/* Version */
25#define MXT_VER_20 20
26#define MXT_VER_21 21
27#define MXT_VER_22 22
28
29/* Slave addresses */
30#define MXT_APP_LOW 0x4a
31#define MXT_APP_HIGH 0x4b
32#define MXT_BOOT_LOW 0x24
33#define MXT_BOOT_HIGH 0x25
34
35/* Firmware */
36#define MXT_FW_NAME "maxtouch.fw"
37
38/* Registers */
39#define MXT_FAMILY_ID 0x00
40#define MXT_VARIANT_ID 0x01
41#define MXT_VERSION 0x02
42#define MXT_BUILD 0x03
43#define MXT_MATRIX_X_SIZE 0x04
44#define MXT_MATRIX_Y_SIZE 0x05
45#define MXT_OBJECT_NUM 0x06
46#define MXT_OBJECT_START 0x07
47
48#define MXT_OBJECT_SIZE 6
49
50/* Object types */
51#define MXT_DEBUG_DIAGNOSTIC 37
52#define MXT_GEN_MESSAGE 5
53#define MXT_GEN_COMMAND 6
54#define MXT_GEN_POWER 7
55#define MXT_GEN_ACQUIRE 8
56#define MXT_TOUCH_MULTI 9
57#define MXT_TOUCH_KEYARRAY 15
58#define MXT_TOUCH_PROXIMITY 23
59#define MXT_PROCI_GRIPFACE 20
60#define MXT_PROCG_NOISE 22
61#define MXT_PROCI_ONETOUCH 24
62#define MXT_PROCI_TWOTOUCH 27
63#define MXT_PROCI_GRIP 40
64#define MXT_PROCI_PALM 41
65#define MXT_SPT_COMMSCONFIG 18
66#define MXT_SPT_GPIOPWM 19
67#define MXT_SPT_SELFTEST 25
68#define MXT_SPT_CTECONFIG 28
69#define MXT_SPT_USERDATA 38
70#define MXT_SPT_DIGITIZER 43
71#define MXT_SPT_MESSAGECOUNT 44
72
73/* MXT_GEN_COMMAND field */
74#define MXT_COMMAND_RESET 0
75#define MXT_COMMAND_BACKUPNV 1
76#define MXT_COMMAND_CALIBRATE 2
77#define MXT_COMMAND_REPORTALL 3
78#define MXT_COMMAND_DIAGNOSTIC 5
79
80/* MXT_GEN_POWER field */
81#define MXT_POWER_IDLEACQINT 0
82#define MXT_POWER_ACTVACQINT 1
83#define MXT_POWER_ACTV2IDLETO 2
84
85/* MXT_GEN_ACQUIRE field */
86#define MXT_ACQUIRE_CHRGTIME 0
87#define MXT_ACQUIRE_TCHDRIFT 2
88#define MXT_ACQUIRE_DRIFTST 3
89#define MXT_ACQUIRE_TCHAUTOCAL 4
90#define MXT_ACQUIRE_SYNC 5
91#define MXT_ACQUIRE_ATCHCALST 6
92#define MXT_ACQUIRE_ATCHCALSTHR 7
93
94/* MXT_TOUCH_MULTI field */
95#define MXT_TOUCH_CTRL 0
96#define MXT_TOUCH_XORIGIN 1
97#define MXT_TOUCH_YORIGIN 2
98#define MXT_TOUCH_XSIZE 3
99#define MXT_TOUCH_YSIZE 4
100#define MXT_TOUCH_BLEN 6
101#define MXT_TOUCH_TCHTHR 7
102#define MXT_TOUCH_TCHDI 8
103#define MXT_TOUCH_ORIENT 9
104#define MXT_TOUCH_MOVHYSTI 11
105#define MXT_TOUCH_MOVHYSTN 12
106#define MXT_TOUCH_NUMTOUCH 14
107#define MXT_TOUCH_MRGHYST 15
108#define MXT_TOUCH_MRGTHR 16
109#define MXT_TOUCH_AMPHYST 17
110#define MXT_TOUCH_XRANGE_LSB 18
111#define MXT_TOUCH_XRANGE_MSB 19
112#define MXT_TOUCH_YRANGE_LSB 20
113#define MXT_TOUCH_YRANGE_MSB 21
114#define MXT_TOUCH_XLOCLIP 22
115#define MXT_TOUCH_XHICLIP 23
116#define MXT_TOUCH_YLOCLIP 24
117#define MXT_TOUCH_YHICLIP 25
118#define MXT_TOUCH_XEDGECTRL 26
119#define MXT_TOUCH_XEDGEDIST 27
120#define MXT_TOUCH_YEDGECTRL 28
121#define MXT_TOUCH_YEDGEDIST 29
122#define MXT_TOUCH_JUMPLIMIT 30
123
124/* MXT_PROCI_GRIPFACE field */
125#define MXT_GRIPFACE_CTRL 0
126#define MXT_GRIPFACE_XLOGRIP 1
127#define MXT_GRIPFACE_XHIGRIP 2
128#define MXT_GRIPFACE_YLOGRIP 3
129#define MXT_GRIPFACE_YHIGRIP 4
130#define MXT_GRIPFACE_MAXTCHS 5
131#define MXT_GRIPFACE_SZTHR1 7
132#define MXT_GRIPFACE_SZTHR2 8
133#define MXT_GRIPFACE_SHPTHR1 9
134#define MXT_GRIPFACE_SHPTHR2 10
135#define MXT_GRIPFACE_SUPEXTTO 11
136
137/* MXT_PROCI_NOISE field */
138#define MXT_NOISE_CTRL 0
139#define MXT_NOISE_OUTFLEN 1
140#define MXT_NOISE_GCAFUL_LSB 3
141#define MXT_NOISE_GCAFUL_MSB 4
142#define MXT_NOISE_GCAFLL_LSB 5
143#define MXT_NOISE_GCAFLL_MSB 6
144#define MXT_NOISE_ACTVGCAFVALID 7
145#define MXT_NOISE_NOISETHR 8
146#define MXT_NOISE_FREQHOPSCALE 10
147#define MXT_NOISE_FREQ0 11
148#define MXT_NOISE_FREQ1 12
149#define MXT_NOISE_FREQ2 13
150#define MXT_NOISE_FREQ3 14
151#define MXT_NOISE_FREQ4 15
152#define MXT_NOISE_IDLEGCAFVALID 16
153
154/* MXT_SPT_COMMSCONFIG */
155#define MXT_COMMS_CTRL 0
156#define MXT_COMMS_CMD 1
157
158/* MXT_SPT_CTECONFIG field */
159#define MXT_CTE_CTRL 0
160#define MXT_CTE_CMD 1
161#define MXT_CTE_MODE 2
162#define MXT_CTE_IDLEGCAFDEPTH 3
163#define MXT_CTE_ACTVGCAFDEPTH 4
164#define MXT_CTE_VOLTAGE 5
165
166#define MXT_VOLTAGE_DEFAULT 2700000
167#define MXT_VOLTAGE_STEP 10000
168
169/* Define for MXT_GEN_COMMAND */
170#define MXT_BOOT_VALUE 0xa5
171#define MXT_BACKUP_VALUE 0x55
172#define MXT_BACKUP_TIME 25 /* msec */
173#define MXT_RESET_TIME 65 /* msec */
174
175#define MXT_FWRESET_TIME 175 /* msec */
176
177/* Command to unlock bootloader */
178#define MXT_UNLOCK_CMD_MSB 0xaa
179#define MXT_UNLOCK_CMD_LSB 0xdc
180
181/* Bootloader mode status */
182#define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */
183#define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */
184#define MXT_FRAME_CRC_CHECK 0x02
185#define MXT_FRAME_CRC_FAIL 0x03
186#define MXT_FRAME_CRC_PASS 0x04
187#define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */
188#define MXT_BOOT_STATUS_MASK 0x3f
189
190/* Touch status */
191#define MXT_SUPPRESS (1 << 1)
192#define MXT_AMP (1 << 2)
193#define MXT_VECTOR (1 << 3)
194#define MXT_MOVE (1 << 4)
195#define MXT_RELEASE (1 << 5)
196#define MXT_PRESS (1 << 6)
197#define MXT_DETECT (1 << 7)
198
199/* Touchscreen absolute values */
200#define MXT_MAX_XC 0x3ff
201#define MXT_MAX_YC 0x3ff
202#define MXT_MAX_AREA 0xff
203
204#define MXT_MAX_FINGER 10
205
206struct mxt_info {
207 u8 family_id;
208 u8 variant_id;
209 u8 version;
210 u8 build;
211 u8 matrix_xsize;
212 u8 matrix_ysize;
213 u8 object_num;
214};
215
216struct mxt_object {
217 u8 type;
218 u16 start_address;
219 u8 size;
220 u8 instances;
221 u8 num_report_ids;
222
223 /* to map object and message */
224 u8 max_reportid;
225};
226
227struct mxt_message {
228 u8 reportid;
229 u8 message[7];
230 u8 checksum;
231};
232
233struct mxt_finger {
234 int status;
235 int x;
236 int y;
237 int area;
238};
239
240/* Each client has this additional data */
241struct mxt_data {
242 struct i2c_client *client;
243 struct input_dev *input_dev;
244 const struct mxt_platform_data *pdata;
245 struct mxt_object *object_table;
246 struct mxt_info info;
247 struct mxt_finger finger[MXT_MAX_FINGER];
248 unsigned int irq;
249};
250
251static bool mxt_object_readable(unsigned int type)
252{
253 switch (type) {
254 case MXT_GEN_MESSAGE:
255 case MXT_GEN_COMMAND:
256 case MXT_GEN_POWER:
257 case MXT_GEN_ACQUIRE:
258 case MXT_TOUCH_MULTI:
259 case MXT_TOUCH_KEYARRAY:
260 case MXT_TOUCH_PROXIMITY:
261 case MXT_PROCI_GRIPFACE:
262 case MXT_PROCG_NOISE:
263 case MXT_PROCI_ONETOUCH:
264 case MXT_PROCI_TWOTOUCH:
265 case MXT_PROCI_GRIP:
266 case MXT_PROCI_PALM:
267 case MXT_SPT_COMMSCONFIG:
268 case MXT_SPT_GPIOPWM:
269 case MXT_SPT_SELFTEST:
270 case MXT_SPT_CTECONFIG:
271 case MXT_SPT_USERDATA:
272 return true;
273 default:
274 return false;
275 }
276}
277
278static bool mxt_object_writable(unsigned int type)
279{
280 switch (type) {
281 case MXT_GEN_COMMAND:
282 case MXT_GEN_POWER:
283 case MXT_GEN_ACQUIRE:
284 case MXT_TOUCH_MULTI:
285 case MXT_TOUCH_KEYARRAY:
286 case MXT_TOUCH_PROXIMITY:
287 case MXT_PROCI_GRIPFACE:
288 case MXT_PROCG_NOISE:
289 case MXT_PROCI_ONETOUCH:
290 case MXT_PROCI_TWOTOUCH:
291 case MXT_PROCI_GRIP:
292 case MXT_PROCI_PALM:
293 case MXT_SPT_GPIOPWM:
294 case MXT_SPT_SELFTEST:
295 case MXT_SPT_CTECONFIG:
296 return true;
297 default:
298 return false;
299 }
300}
301
302static void mxt_dump_message(struct device *dev,
303 struct mxt_message *message)
304{
305 dev_dbg(dev, "reportid:\t0x%x\n", message->reportid);
306 dev_dbg(dev, "message1:\t0x%x\n", message->message[0]);
307 dev_dbg(dev, "message2:\t0x%x\n", message->message[1]);
308 dev_dbg(dev, "message3:\t0x%x\n", message->message[2]);
309 dev_dbg(dev, "message4:\t0x%x\n", message->message[3]);
310 dev_dbg(dev, "message5:\t0x%x\n", message->message[4]);
311 dev_dbg(dev, "message6:\t0x%x\n", message->message[5]);
312 dev_dbg(dev, "message7:\t0x%x\n", message->message[6]);
313 dev_dbg(dev, "checksum:\t0x%x\n", message->checksum);
314}
315
316static int mxt_check_bootloader(struct i2c_client *client,
317 unsigned int state)
318{
319 u8 val;
320
321recheck:
322 if (i2c_master_recv(client, &val, 1) != 1) {
323 dev_err(&client->dev, "%s: i2c recv failed\n", __func__);
324 return -EIO;
325 }
326
327 switch (state) {
328 case MXT_WAITING_BOOTLOAD_CMD:
329 case MXT_WAITING_FRAME_DATA:
330 val &= ~MXT_BOOT_STATUS_MASK;
331 break;
332 case MXT_FRAME_CRC_PASS:
333 if (val == MXT_FRAME_CRC_CHECK)
334 goto recheck;
335 break;
336 default:
337 return -EINVAL;
338 }
339
340 if (val != state) {
341 dev_err(&client->dev, "Unvalid bootloader mode state\n");
342 return -EINVAL;
343 }
344
345 return 0;
346}
347
348static int mxt_unlock_bootloader(struct i2c_client *client)
349{
350 u8 buf[2];
351
352 buf[0] = MXT_UNLOCK_CMD_LSB;
353 buf[1] = MXT_UNLOCK_CMD_MSB;
354
355 if (i2c_master_send(client, buf, 2) != 2) {
356 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
357 return -EIO;
358 }
359
360 return 0;
361}
362
363static int mxt_fw_write(struct i2c_client *client,
364 const u8 *data, unsigned int frame_size)
365{
366 if (i2c_master_send(client, data, frame_size) != frame_size) {
367 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
368 return -EIO;
369 }
370
371 return 0;
372}
373
374static int __mxt_read_reg(struct i2c_client *client,
375 u16 reg, u16 len, void *val)
376{
377 struct i2c_msg xfer[2];
378 u8 buf[2];
379
380 buf[0] = reg & 0xff;
381 buf[1] = (reg >> 8) & 0xff;
382
383 /* Write register */
384 xfer[0].addr = client->addr;
385 xfer[0].flags = 0;
386 xfer[0].len = 2;
387 xfer[0].buf = buf;
388
389 /* Read data */
390 xfer[1].addr = client->addr;
391 xfer[1].flags = I2C_M_RD;
392 xfer[1].len = len;
393 xfer[1].buf = val;
394
395 if (i2c_transfer(client->adapter, xfer, 2) != 2) {
396 dev_err(&client->dev, "%s: i2c transfer failed\n", __func__);
397 return -EIO;
398 }
399
400 return 0;
401}
402
403static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val)
404{
405 return __mxt_read_reg(client, reg, 1, val);
406}
407
408static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val)
409{
410 u8 buf[3];
411
412 buf[0] = reg & 0xff;
413 buf[1] = (reg >> 8) & 0xff;
414 buf[2] = val;
415
416 if (i2c_master_send(client, buf, 3) != 3) {
417 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
418 return -EIO;
419 }
420
421 return 0;
422}
423
424static int mxt_read_object_table(struct i2c_client *client,
425 u16 reg, u8 *object_buf)
426{
427 return __mxt_read_reg(client, reg, MXT_OBJECT_SIZE,
428 object_buf);
429}
430
431static struct mxt_object *
432mxt_get_object(struct mxt_data *data, u8 type)
433{
434 struct mxt_object *object;
435 int i;
436
437 for (i = 0; i < data->info.object_num; i++) {
438 object = data->object_table + i;
439 if (object->type == type)
440 return object;
441 }
442
443 dev_err(&data->client->dev, "Invalid object type\n");
444 return NULL;
445}
446
447static int mxt_read_message(struct mxt_data *data,
448 struct mxt_message *message)
449{
450 struct mxt_object *object;
451 u16 reg;
452
453 object = mxt_get_object(data, MXT_GEN_MESSAGE);
454 if (!object)
455 return -EINVAL;
456
457 reg = object->start_address;
458 return __mxt_read_reg(data->client, reg,
459 sizeof(struct mxt_message), message);
460}
461
462static int mxt_read_object(struct mxt_data *data,
463 u8 type, u8 offset, u8 *val)
464{
465 struct mxt_object *object;
466 u16 reg;
467
468 object = mxt_get_object(data, type);
469 if (!object)
470 return -EINVAL;
471
472 reg = object->start_address;
473 return __mxt_read_reg(data->client, reg + offset, 1, val);
474}
475
476static int mxt_write_object(struct mxt_data *data,
477 u8 type, u8 offset, u8 val)
478{
479 struct mxt_object *object;
480 u16 reg;
481
482 object = mxt_get_object(data, type);
483 if (!object)
484 return -EINVAL;
485
486 reg = object->start_address;
487 return mxt_write_reg(data->client, reg + offset, val);
488}
489
490static void mxt_input_report(struct mxt_data *data, int single_id)
491{
492 struct mxt_finger *finger = data->finger;
493 struct input_dev *input_dev = data->input_dev;
494 int status = finger[single_id].status;
495 int finger_num = 0;
496 int id;
497
498 for (id = 0; id < MXT_MAX_FINGER; id++) {
499 if (!finger[id].status)
500 continue;
501
502 input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
503 finger[id].status != MXT_RELEASE ?
504 finger[id].area : 0);
505 input_report_abs(input_dev, ABS_MT_POSITION_X,
506 finger[id].x);
507 input_report_abs(input_dev, ABS_MT_POSITION_Y,
508 finger[id].y);
509 input_mt_sync(input_dev);
510
511 if (finger[id].status == MXT_RELEASE)
512 finger[id].status = 0;
513 else
514 finger_num++;
515 }
516
517 input_report_key(input_dev, BTN_TOUCH, finger_num > 0);
518
519 if (status != MXT_RELEASE) {
520 input_report_abs(input_dev, ABS_X, finger[single_id].x);
521 input_report_abs(input_dev, ABS_Y, finger[single_id].y);
522 }
523
524 input_sync(input_dev);
525}
526
527static void mxt_input_touchevent(struct mxt_data *data,
528 struct mxt_message *message, int id)
529{
530 struct mxt_finger *finger = data->finger;
531 struct device *dev = &data->client->dev;
532 u8 status = message->message[0];
533 int x;
534 int y;
535 int area;
536
537 /* Check the touch is present on the screen */
538 if (!(status & MXT_DETECT)) {
539 if (status & MXT_RELEASE) {
540 dev_dbg(dev, "[%d] released\n", id);
541
542 finger[id].status = MXT_RELEASE;
543 mxt_input_report(data, id);
544 }
545 return;
546 }
547
548 /* Check only AMP detection */
549 if (!(status & (MXT_PRESS | MXT_MOVE)))
550 return;
551
552 x = (message->message[1] << 2) | ((message->message[3] & ~0x3f) >> 6);
553 y = (message->message[2] << 2) | ((message->message[3] & ~0xf3) >> 2);
554 area = message->message[4];
555
556 dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id,
557 status & MXT_MOVE ? "moved" : "pressed",
558 x, y, area);
559
560 finger[id].status = status & MXT_MOVE ?
561 MXT_MOVE : MXT_PRESS;
562 finger[id].x = x;
563 finger[id].y = y;
564 finger[id].area = area;
565
566 mxt_input_report(data, id);
567}
568
569static irqreturn_t mxt_interrupt(int irq, void *dev_id)
570{
571 struct mxt_data *data = dev_id;
572 struct mxt_message message;
573 struct mxt_object *object;
574 struct device *dev = &data->client->dev;
575 int id;
576 u8 reportid;
577 u8 max_reportid;
578 u8 min_reportid;
579
580 do {
581 if (mxt_read_message(data, &message)) {
582 dev_err(dev, "Failed to read message\n");
583 goto end;
584 }
585
586 reportid = message.reportid;
587
588 /* whether reportid is thing of MXT_TOUCH_MULTI */
589 object = mxt_get_object(data, MXT_TOUCH_MULTI);
590 if (!object)
591 goto end;
592
593 max_reportid = object->max_reportid;
594 min_reportid = max_reportid - object->num_report_ids + 1;
595 id = reportid - min_reportid;
596
597 if (reportid >= min_reportid && reportid <= max_reportid)
598 mxt_input_touchevent(data, &message, id);
599 else
600 mxt_dump_message(dev, &message);
601 } while (reportid != 0xff);
602
603end:
604 return IRQ_HANDLED;
605}
606
607static int mxt_check_reg_init(struct mxt_data *data)
608{
609 const struct mxt_platform_data *pdata = data->pdata;
610 struct mxt_object *object;
611 struct device *dev = &data->client->dev;
612 int index = 0;
613 int i, j, config_offset;
614
615 if (!pdata->config) {
616 dev_dbg(dev, "No cfg data defined, skipping reg init\n");
617 return 0;
618 }
619
620 for (i = 0; i < data->info.object_num; i++) {
621 object = data->object_table + i;
622
623 if (!mxt_object_writable(object->type))
624 continue;
625
626 for (j = 0; j < object->size + 1; j++) {
627 config_offset = index + j;
628 if (config_offset > pdata->config_length) {
629 dev_err(dev, "Not enough config data!\n");
630 return -EINVAL;
631 }
632 mxt_write_object(data, object->type, j,
633 pdata->config[config_offset]);
634 }
635 index += object->size + 1;
636 }
637
638 return 0;
639}
640
641static int mxt_make_highchg(struct mxt_data *data)
642{
643 struct device *dev = &data->client->dev;
644 struct mxt_message message;
645 int count = 10;
646 int error;
647
648 /* Read dummy message to make high CHG pin */
649 do {
650 error = mxt_read_message(data, &message);
651 if (error)
652 return error;
653 } while (message.reportid != 0xff && --count);
654
655 if (!count) {
656 dev_err(dev, "CHG pin isn't cleared\n");
657 return -EBUSY;
658 }
659
660 return 0;
661}
662
663static void mxt_handle_pdata(struct mxt_data *data)
664{
665 const struct mxt_platform_data *pdata = data->pdata;
666 u8 voltage;
667
668 /* Set touchscreen lines */
669 mxt_write_object(data, MXT_TOUCH_MULTI, MXT_TOUCH_XSIZE,
670 pdata->x_line);
671 mxt_write_object(data, MXT_TOUCH_MULTI, MXT_TOUCH_YSIZE,
672 pdata->y_line);
673
674 /* Set touchscreen orient */
675 mxt_write_object(data, MXT_TOUCH_MULTI, MXT_TOUCH_ORIENT,
676 pdata->orient);
677
678 /* Set touchscreen burst length */
679 mxt_write_object(data, MXT_TOUCH_MULTI,
680 MXT_TOUCH_BLEN, pdata->blen);
681
682 /* Set touchscreen threshold */
683 mxt_write_object(data, MXT_TOUCH_MULTI,
684 MXT_TOUCH_TCHTHR, pdata->threshold);
685
686 /* Set touchscreen resolution */
687 mxt_write_object(data, MXT_TOUCH_MULTI,
688 MXT_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff);
689 mxt_write_object(data, MXT_TOUCH_MULTI,
690 MXT_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8);
691 mxt_write_object(data, MXT_TOUCH_MULTI,
692 MXT_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff);
693 mxt_write_object(data, MXT_TOUCH_MULTI,
694 MXT_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8);
695
696 /* Set touchscreen voltage */
697 if (pdata->voltage) {
698 if (pdata->voltage < MXT_VOLTAGE_DEFAULT) {
699 voltage = (MXT_VOLTAGE_DEFAULT - pdata->voltage) /
700 MXT_VOLTAGE_STEP;
701 voltage = 0xff - voltage + 1;
702 } else
703 voltage = (pdata->voltage - MXT_VOLTAGE_DEFAULT) /
704 MXT_VOLTAGE_STEP;
705
706 mxt_write_object(data, MXT_SPT_CTECONFIG,
707 MXT_CTE_VOLTAGE, voltage);
708 }
709}
710
711static int mxt_get_info(struct mxt_data *data)
712{
713 struct i2c_client *client = data->client;
714 struct mxt_info *info = &data->info;
715 int error;
716 u8 val;
717
718 error = mxt_read_reg(client, MXT_FAMILY_ID, &val);
719 if (error)
720 return error;
721 info->family_id = val;
722
723 error = mxt_read_reg(client, MXT_VARIANT_ID, &val);
724 if (error)
725 return error;
726 info->variant_id = val;
727
728 error = mxt_read_reg(client, MXT_VERSION, &val);
729 if (error)
730 return error;
731 info->version = val;
732
733 error = mxt_read_reg(client, MXT_BUILD, &val);
734 if (error)
735 return error;
736 info->build = val;
737
738 error = mxt_read_reg(client, MXT_OBJECT_NUM, &val);
739 if (error)
740 return error;
741 info->object_num = val;
742
743 return 0;
744}
745
746static int mxt_get_object_table(struct mxt_data *data)
747{
748 int error;
749 int i;
750 u16 reg;
751 u8 reportid = 0;
752 u8 buf[MXT_OBJECT_SIZE];
753
754 for (i = 0; i < data->info.object_num; i++) {
755 struct mxt_object *object = data->object_table + i;
756
757 reg = MXT_OBJECT_START + MXT_OBJECT_SIZE * i;
758 error = mxt_read_object_table(data->client, reg, buf);
759 if (error)
760 return error;
761
762 object->type = buf[0];
763 object->start_address = (buf[2] << 8) | buf[1];
764 object->size = buf[3];
765 object->instances = buf[4];
766 object->num_report_ids = buf[5];
767
768 if (object->num_report_ids) {
769 reportid += object->num_report_ids *
770 (object->instances + 1);
771 object->max_reportid = reportid;
772 }
773 }
774
775 return 0;
776}
777
778static int mxt_initialize(struct mxt_data *data)
779{
780 struct i2c_client *client = data->client;
781 struct mxt_info *info = &data->info;
782 int error;
783 u8 val;
784
785 error = mxt_get_info(data);
786 if (error)
787 return error;
788
789 data->object_table = kcalloc(info->object_num,
790 sizeof(struct mxt_object),
791 GFP_KERNEL);
792 if (!data->object_table) {
793 dev_err(&client->dev, "Failed to allocate memory\n");
794 return -ENOMEM;
795 }
796
797 /* Get object table information */
798 error = mxt_get_object_table(data);
799 if (error)
800 return error;
801
802 /* Check register init values */
803 error = mxt_check_reg_init(data);
804 if (error)
805 return error;
806
807 error = mxt_make_highchg(data);
808 if (error)
809 return error;
810
811 mxt_handle_pdata(data);
812
813 /* Backup to memory */
814 mxt_write_object(data, MXT_GEN_COMMAND,
815 MXT_COMMAND_BACKUPNV,
816 MXT_BACKUP_VALUE);
817 msleep(MXT_BACKUP_TIME);
818
819 /* Soft reset */
820 mxt_write_object(data, MXT_GEN_COMMAND,
821 MXT_COMMAND_RESET, 1);
822 msleep(MXT_RESET_TIME);
823
824 /* Update matrix size at info struct */
825 error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val);
826 if (error)
827 return error;
828 info->matrix_xsize = val;
829
830 error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val);
831 if (error)
832 return error;
833 info->matrix_ysize = val;
834
835 dev_info(&client->dev,
836 "Family ID: %d Variant ID: %d Version: %d Build: %d\n",
837 info->family_id, info->variant_id, info->version,
838 info->build);
839
840 dev_info(&client->dev,
841 "Matrix X Size: %d Matrix Y Size: %d Object Num: %d\n",
842 info->matrix_xsize, info->matrix_ysize,
843 info->object_num);
844
845 return 0;
846}
847
848static ssize_t mxt_object_show(struct device *dev,
849 struct device_attribute *attr, char *buf)
850{
851 struct mxt_data *data = dev_get_drvdata(dev);
852 struct mxt_object *object;
853 int count = 0;
854 int i, j;
855 int error;
856 u8 val;
857
858 for (i = 0; i < data->info.object_num; i++) {
859 object = data->object_table + i;
860
861 count += sprintf(buf + count,
862 "Object Table Element %d(Type %d)\n",
863 i + 1, object->type);
864
865 if (!mxt_object_readable(object->type)) {
866 count += sprintf(buf + count, "\n");
867 continue;
868 }
869
870 for (j = 0; j < object->size + 1; j++) {
871 error = mxt_read_object(data,
872 object->type, j, &val);
873 if (error)
874 return error;
875
876 count += sprintf(buf + count,
877 " Byte %d: 0x%x (%d)\n", j, val, val);
878 }
879
880 count += sprintf(buf + count, "\n");
881 }
882
883 return count;
884}
885
886static int mxt_load_fw(struct device *dev, const char *fn)
887{
888 struct mxt_data *data = dev_get_drvdata(dev);
889 struct i2c_client *client = data->client;
890 const struct firmware *fw = NULL;
891 unsigned int frame_size;
892 unsigned int pos = 0;
893 int ret;
894
895 ret = request_firmware(&fw, fn, dev);
896 if (ret) {
897 dev_err(dev, "Unable to open firmware %s\n", fn);
898 return ret;
899 }
900
901 /* Change to the bootloader mode */
902 mxt_write_object(data, MXT_GEN_COMMAND,
903 MXT_COMMAND_RESET, MXT_BOOT_VALUE);
904 msleep(MXT_RESET_TIME);
905
906 /* Change to slave address of bootloader */
907 if (client->addr == MXT_APP_LOW)
908 client->addr = MXT_BOOT_LOW;
909 else
910 client->addr = MXT_BOOT_HIGH;
911
912 ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD);
913 if (ret)
914 goto out;
915
916 /* Unlock bootloader */
917 mxt_unlock_bootloader(client);
918
919 while (pos < fw->size) {
920 ret = mxt_check_bootloader(client,
921 MXT_WAITING_FRAME_DATA);
922 if (ret)
923 goto out;
924
925 frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1));
926
927 /* We should add 2 at frame size as the the firmware data is not
928 * included the CRC bytes.
929 */
930 frame_size += 2;
931
932 /* Write one frame to device */
933 mxt_fw_write(client, fw->data + pos, frame_size);
934
935 ret = mxt_check_bootloader(client,
936 MXT_FRAME_CRC_PASS);
937 if (ret)
938 goto out;
939
940 pos += frame_size;
941
942 dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size);
943 }
944
945out:
946 release_firmware(fw);
947
948 /* Change to slave address of application */
949 if (client->addr == MXT_BOOT_LOW)
950 client->addr = MXT_APP_LOW;
951 else
952 client->addr = MXT_APP_HIGH;
953
954 return ret;
955}
956
957static ssize_t mxt_update_fw_store(struct device *dev,
958 struct device_attribute *attr,
959 const char *buf, size_t count)
960{
961 struct mxt_data *data = dev_get_drvdata(dev);
962 int error;
963
964 disable_irq(data->irq);
965
966 error = mxt_load_fw(dev, MXT_FW_NAME);
967 if (error) {
968 dev_err(dev, "The firmware update failed(%d)\n", error);
969 count = error;
970 } else {
971 dev_dbg(dev, "The firmware update succeeded\n");
972
973 /* Wait for reset */
974 msleep(MXT_FWRESET_TIME);
975
976 kfree(data->object_table);
977 data->object_table = NULL;
978
979 mxt_initialize(data);
980 }
981
982 enable_irq(data->irq);
983
984 return count;
985}
986
987static DEVICE_ATTR(object, 0444, mxt_object_show, NULL);
988static DEVICE_ATTR(update_fw, 0664, NULL, mxt_update_fw_store);
989
990static struct attribute *mxt_attrs[] = {
991 &dev_attr_object.attr,
992 &dev_attr_update_fw.attr,
993 NULL
994};
995
996static const struct attribute_group mxt_attr_group = {
997 .attrs = mxt_attrs,
998};
999
1000static void mxt_start(struct mxt_data *data)
1001{
1002 /* Touch enable */
1003 mxt_write_object(data,
1004 MXT_TOUCH_MULTI, MXT_TOUCH_CTRL, 0x83);
1005}
1006
1007static void mxt_stop(struct mxt_data *data)
1008{
1009 /* Touch disable */
1010 mxt_write_object(data,
1011 MXT_TOUCH_MULTI, MXT_TOUCH_CTRL, 0);
1012}
1013
1014static int mxt_input_open(struct input_dev *dev)
1015{
1016 struct mxt_data *data = input_get_drvdata(dev);
1017
1018 mxt_start(data);
1019
1020 return 0;
1021}
1022
1023static void mxt_input_close(struct input_dev *dev)
1024{
1025 struct mxt_data *data = input_get_drvdata(dev);
1026
1027 mxt_stop(data);
1028}
1029
1030static int __devinit mxt_probe(struct i2c_client *client,
1031 const struct i2c_device_id *id)
1032{
1033 const struct mxt_platform_data *pdata = client->dev.platform_data;
1034 struct mxt_data *data;
1035 struct input_dev *input_dev;
1036 int error;
1037
1038 if (!pdata)
1039 return -EINVAL;
1040
1041 data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL);
1042 input_dev = input_allocate_device();
1043 if (!data || !input_dev) {
1044 dev_err(&client->dev, "Failed to allocate memory\n");
1045 error = -ENOMEM;
1046 goto err_free_mem;
1047 }
1048
1049 input_dev->name = "Atmel maXTouch Touchscreen";
1050 input_dev->id.bustype = BUS_I2C;
1051 input_dev->dev.parent = &client->dev;
1052 input_dev->open = mxt_input_open;
1053 input_dev->close = mxt_input_close;
1054
1055 __set_bit(EV_ABS, input_dev->evbit);
1056 __set_bit(EV_KEY, input_dev->evbit);
1057 __set_bit(BTN_TOUCH, input_dev->keybit);
1058
1059 /* For single touch */
1060 input_set_abs_params(input_dev, ABS_X,
1061 0, MXT_MAX_XC, 0, 0);
1062 input_set_abs_params(input_dev, ABS_Y,
1063 0, MXT_MAX_YC, 0, 0);
1064
1065 /* For multi touch */
1066 input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
1067 0, MXT_MAX_AREA, 0, 0);
1068 input_set_abs_params(input_dev, ABS_MT_POSITION_X,
1069 0, MXT_MAX_XC, 0, 0);
1070 input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
1071 0, MXT_MAX_YC, 0, 0);
1072
1073 input_set_drvdata(input_dev, data);
1074
1075 data->client = client;
1076 data->input_dev = input_dev;
1077 data->pdata = pdata;
1078 data->irq = client->irq;
1079
1080 i2c_set_clientdata(client, data);
1081
1082 error = mxt_initialize(data);
1083 if (error)
1084 goto err_free_object;
1085
1086 error = request_threaded_irq(client->irq, NULL, mxt_interrupt,
1087 pdata->irqflags, client->dev.driver->name, data);
1088 if (error) {
1089 dev_err(&client->dev, "Failed to register interrupt\n");
1090 goto err_free_object;
1091 }
1092
1093 error = input_register_device(input_dev);
1094 if (error)
1095 goto err_free_irq;
1096
1097 error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group);
1098 if (error)
1099 goto err_unregister_device;
1100
1101 return 0;
1102
1103err_unregister_device:
1104 input_unregister_device(input_dev);
1105 input_dev = NULL;
1106err_free_irq:
1107 free_irq(client->irq, data);
1108err_free_object:
1109 kfree(data->object_table);
1110err_free_mem:
1111 input_free_device(input_dev);
1112 kfree(data);
1113 return error;
1114}
1115
1116static int __devexit mxt_remove(struct i2c_client *client)
1117{
1118 struct mxt_data *data = i2c_get_clientdata(client);
1119
1120 sysfs_remove_group(&client->dev.kobj, &mxt_attr_group);
1121 free_irq(data->irq, data);
1122 input_unregister_device(data->input_dev);
1123 kfree(data->object_table);
1124 kfree(data);
1125
1126 return 0;
1127}
1128
1129#ifdef CONFIG_PM
1130static int mxt_suspend(struct device *dev)
1131{
1132 struct i2c_client *client = to_i2c_client(dev);
1133 struct mxt_data *data = i2c_get_clientdata(client);
1134 struct input_dev *input_dev = data->input_dev;
1135
1136 mutex_lock(&input_dev->mutex);
1137
1138 if (input_dev->users)
1139 mxt_stop(data);
1140
1141 mutex_unlock(&input_dev->mutex);
1142
1143 return 0;
1144}
1145
1146static int mxt_resume(struct device *dev)
1147{
1148 struct i2c_client *client = to_i2c_client(dev);
1149 struct mxt_data *data = i2c_get_clientdata(client);
1150 struct input_dev *input_dev = data->input_dev;
1151
1152 /* Soft reset */
1153 mxt_write_object(data, MXT_GEN_COMMAND,
1154 MXT_COMMAND_RESET, 1);
1155
1156 msleep(MXT_RESET_TIME);
1157
1158 mutex_lock(&input_dev->mutex);
1159
1160 if (input_dev->users)
1161 mxt_start(data);
1162
1163 mutex_unlock(&input_dev->mutex);
1164
1165 return 0;
1166}
1167
1168static const struct dev_pm_ops mxt_pm_ops = {
1169 .suspend = mxt_suspend,
1170 .resume = mxt_resume,
1171};
1172#endif
1173
1174static const struct i2c_device_id mxt_id[] = {
1175 { "qt602240_ts", 0 },
1176 { "atmel_mxt_ts", 0 },
1177 { "mXT224", 0 },
1178 { }
1179};
1180MODULE_DEVICE_TABLE(i2c, mxt_id);
1181
1182static struct i2c_driver mxt_driver = {
1183 .driver = {
1184 .name = "atmel_mxt_ts",
1185 .owner = THIS_MODULE,
1186#ifdef CONFIG_PM
1187 .pm = &mxt_pm_ops,
1188#endif
1189 },
1190 .probe = mxt_probe,
1191 .remove = __devexit_p(mxt_remove),
1192 .id_table = mxt_id,
1193};
1194
1195static int __init mxt_init(void)
1196{
1197 return i2c_add_driver(&mxt_driver);
1198}
1199
1200static void __exit mxt_exit(void)
1201{
1202 i2c_del_driver(&mxt_driver);
1203}
1204
1205module_init(mxt_init);
1206module_exit(mxt_exit);
1207
1208/* Module information */
1209MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
1210MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver");
1211MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/qt602240_ts.c b/drivers/input/touchscreen/qt602240_ts.c
deleted file mode 100644
index 4dcb0e872f6..00000000000
--- a/drivers/input/touchscreen/qt602240_ts.c
+++ /dev/null
@@ -1,1406 +0,0 @@
1/*
2 * AT42QT602240/ATMXT224 Touchscreen driver
3 *
4 * Copyright (C) 2010 Samsung Electronics Co.Ltd
5 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/delay.h>
17#include <linux/firmware.h>
18#include <linux/i2c.h>
19#include <linux/i2c/qt602240_ts.h>
20#include <linux/input.h>
21#include <linux/interrupt.h>
22#include <linux/slab.h>
23
24/* Version */
25#define QT602240_VER_20 20
26#define QT602240_VER_21 21
27#define QT602240_VER_22 22
28
29/* Slave addresses */
30#define QT602240_APP_LOW 0x4a
31#define QT602240_APP_HIGH 0x4b
32#define QT602240_BOOT_LOW 0x24
33#define QT602240_BOOT_HIGH 0x25
34
35/* Firmware */
36#define QT602240_FW_NAME "qt602240.fw"
37
38/* Registers */
39#define QT602240_FAMILY_ID 0x00
40#define QT602240_VARIANT_ID 0x01
41#define QT602240_VERSION 0x02
42#define QT602240_BUILD 0x03
43#define QT602240_MATRIX_X_SIZE 0x04
44#define QT602240_MATRIX_Y_SIZE 0x05
45#define QT602240_OBJECT_NUM 0x06
46#define QT602240_OBJECT_START 0x07
47
48#define QT602240_OBJECT_SIZE 6
49
50/* Object types */
51#define QT602240_DEBUG_DIAGNOSTIC 37
52#define QT602240_GEN_MESSAGE 5
53#define QT602240_GEN_COMMAND 6
54#define QT602240_GEN_POWER 7
55#define QT602240_GEN_ACQUIRE 8
56#define QT602240_TOUCH_MULTI 9
57#define QT602240_TOUCH_KEYARRAY 15
58#define QT602240_TOUCH_PROXIMITY 23
59#define QT602240_PROCI_GRIPFACE 20
60#define QT602240_PROCG_NOISE 22
61#define QT602240_PROCI_ONETOUCH 24
62#define QT602240_PROCI_TWOTOUCH 27
63#define QT602240_SPT_COMMSCONFIG 18 /* firmware ver 21 over */
64#define QT602240_SPT_GPIOPWM 19
65#define QT602240_SPT_SELFTEST 25
66#define QT602240_SPT_CTECONFIG 28
67#define QT602240_SPT_USERDATA 38 /* firmware ver 21 over */
68
69/* QT602240_GEN_COMMAND field */
70#define QT602240_COMMAND_RESET 0
71#define QT602240_COMMAND_BACKUPNV 1
72#define QT602240_COMMAND_CALIBRATE 2
73#define QT602240_COMMAND_REPORTALL 3
74#define QT602240_COMMAND_DIAGNOSTIC 5
75
76/* QT602240_GEN_POWER field */
77#define QT602240_POWER_IDLEACQINT 0
78#define QT602240_POWER_ACTVACQINT 1
79#define QT602240_POWER_ACTV2IDLETO 2
80
81/* QT602240_GEN_ACQUIRE field */
82#define QT602240_ACQUIRE_CHRGTIME 0
83#define QT602240_ACQUIRE_TCHDRIFT 2
84#define QT602240_ACQUIRE_DRIFTST 3
85#define QT602240_ACQUIRE_TCHAUTOCAL 4
86#define QT602240_ACQUIRE_SYNC 5
87#define QT602240_ACQUIRE_ATCHCALST 6
88#define QT602240_ACQUIRE_ATCHCALSTHR 7
89
90/* QT602240_TOUCH_MULTI field */
91#define QT602240_TOUCH_CTRL 0
92#define QT602240_TOUCH_XORIGIN 1
93#define QT602240_TOUCH_YORIGIN 2
94#define QT602240_TOUCH_XSIZE 3
95#define QT602240_TOUCH_YSIZE 4
96#define QT602240_TOUCH_BLEN 6
97#define QT602240_TOUCH_TCHTHR 7
98#define QT602240_TOUCH_TCHDI 8
99#define QT602240_TOUCH_ORIENT 9
100#define QT602240_TOUCH_MOVHYSTI 11
101#define QT602240_TOUCH_MOVHYSTN 12
102#define QT602240_TOUCH_NUMTOUCH 14
103#define QT602240_TOUCH_MRGHYST 15
104#define QT602240_TOUCH_MRGTHR 16
105#define QT602240_TOUCH_AMPHYST 17
106#define QT602240_TOUCH_XRANGE_LSB 18
107#define QT602240_TOUCH_XRANGE_MSB 19
108#define QT602240_TOUCH_YRANGE_LSB 20
109#define QT602240_TOUCH_YRANGE_MSB 21
110#define QT602240_TOUCH_XLOCLIP 22
111#define QT602240_TOUCH_XHICLIP 23
112#define QT602240_TOUCH_YLOCLIP 24
113#define QT602240_TOUCH_YHICLIP 25
114#define QT602240_TOUCH_XEDGECTRL 26
115#define QT602240_TOUCH_XEDGEDIST 27
116#define QT602240_TOUCH_YEDGECTRL 28
117#define QT602240_TOUCH_YEDGEDIST 29
118#define QT602240_TOUCH_JUMPLIMIT 30 /* firmware ver 22 over */
119
120/* QT602240_PROCI_GRIPFACE field */
121#define QT602240_GRIPFACE_CTRL 0
122#define QT602240_GRIPFACE_XLOGRIP 1
123#define QT602240_GRIPFACE_XHIGRIP 2
124#define QT602240_GRIPFACE_YLOGRIP 3
125#define QT602240_GRIPFACE_YHIGRIP 4
126#define QT602240_GRIPFACE_MAXTCHS 5
127#define QT602240_GRIPFACE_SZTHR1 7
128#define QT602240_GRIPFACE_SZTHR2 8
129#define QT602240_GRIPFACE_SHPTHR1 9
130#define QT602240_GRIPFACE_SHPTHR2 10
131#define QT602240_GRIPFACE_SUPEXTTO 11
132
133/* QT602240_PROCI_NOISE field */
134#define QT602240_NOISE_CTRL 0
135#define QT602240_NOISE_OUTFLEN 1
136#define QT602240_NOISE_GCAFUL_LSB 3
137#define QT602240_NOISE_GCAFUL_MSB 4
138#define QT602240_NOISE_GCAFLL_LSB 5
139#define QT602240_NOISE_GCAFLL_MSB 6
140#define QT602240_NOISE_ACTVGCAFVALID 7
141#define QT602240_NOISE_NOISETHR 8
142#define QT602240_NOISE_FREQHOPSCALE 10
143#define QT602240_NOISE_FREQ0 11
144#define QT602240_NOISE_FREQ1 12
145#define QT602240_NOISE_FREQ2 13
146#define QT602240_NOISE_FREQ3 14
147#define QT602240_NOISE_FREQ4 15
148#define QT602240_NOISE_IDLEGCAFVALID 16
149
150/* QT602240_SPT_COMMSCONFIG */
151#define QT602240_COMMS_CTRL 0
152#define QT602240_COMMS_CMD 1
153
154/* QT602240_SPT_CTECONFIG field */
155#define QT602240_CTE_CTRL 0
156#define QT602240_CTE_CMD 1
157#define QT602240_CTE_MODE 2
158#define QT602240_CTE_IDLEGCAFDEPTH 3
159#define QT602240_CTE_ACTVGCAFDEPTH 4
160#define QT602240_CTE_VOLTAGE 5 /* firmware ver 21 over */
161
162#define QT602240_VOLTAGE_DEFAULT 2700000
163#define QT602240_VOLTAGE_STEP 10000
164
165/* Define for QT602240_GEN_COMMAND */
166#define QT602240_BOOT_VALUE 0xa5
167#define QT602240_BACKUP_VALUE 0x55
168#define QT602240_BACKUP_TIME 25 /* msec */
169#define QT602240_RESET_TIME 65 /* msec */
170
171#define QT602240_FWRESET_TIME 175 /* msec */
172
173/* Command to unlock bootloader */
174#define QT602240_UNLOCK_CMD_MSB 0xaa
175#define QT602240_UNLOCK_CMD_LSB 0xdc
176
177/* Bootloader mode status */
178#define QT602240_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */
179#define QT602240_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */
180#define QT602240_FRAME_CRC_CHECK 0x02
181#define QT602240_FRAME_CRC_FAIL 0x03
182#define QT602240_FRAME_CRC_PASS 0x04
183#define QT602240_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */
184#define QT602240_BOOT_STATUS_MASK 0x3f
185
186/* Touch status */
187#define QT602240_SUPPRESS (1 << 1)
188#define QT602240_AMP (1 << 2)
189#define QT602240_VECTOR (1 << 3)
190#define QT602240_MOVE (1 << 4)
191#define QT602240_RELEASE (1 << 5)
192#define QT602240_PRESS (1 << 6)
193#define QT602240_DETECT (1 << 7)
194
195/* Touchscreen absolute values */
196#define QT602240_MAX_XC 0x3ff
197#define QT602240_MAX_YC 0x3ff
198#define QT602240_MAX_AREA 0xff
199
200#define QT602240_MAX_FINGER 10
201
202/* Initial register values recommended from chip vendor */
203static const u8 init_vals_ver_20[] = {
204 /* QT602240_GEN_COMMAND(6) */
205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
206 /* QT602240_GEN_POWER(7) */
207 0x20, 0xff, 0x32,
208 /* QT602240_GEN_ACQUIRE(8) */
209 0x08, 0x05, 0x05, 0x00, 0x00, 0x00, 0x05, 0x14,
210 /* QT602240_TOUCH_MULTI(9) */
211 0x00, 0x00, 0x00, 0x11, 0x0a, 0x00, 0x00, 0x00, 0x02, 0x00,
212 0x00, 0x01, 0x01, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00,
213 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x64,
214 /* QT602240_TOUCH_KEYARRAY(15) */
215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
216 0x00,
217 /* QT602240_SPT_GPIOPWM(19) */
218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
219 0x00, 0x00,
220 /* QT602240_PROCI_GRIPFACE(20) */
221 0x00, 0x64, 0x64, 0x64, 0x64, 0x00, 0x00, 0x1e, 0x14, 0x04,
222 0x1e, 0x00,
223 /* QT602240_PROCG_NOISE(22) */
224 0x05, 0x00, 0x00, 0x19, 0x00, 0xe7, 0xff, 0x04, 0x32, 0x00,
225 0x01, 0x0a, 0x0f, 0x14, 0x00, 0x00, 0xe8,
226 /* QT602240_TOUCH_PROXIMITY(23) */
227 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
228 0x00, 0x00, 0x00,
229 /* QT602240_PROCI_ONETOUCH(24) */
230 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
231 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
232 /* QT602240_SPT_SELFTEST(25) */
233 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
234 0x00, 0x00, 0x00, 0x00,
235 /* QT602240_PROCI_TWOTOUCH(27) */
236 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
237 /* QT602240_SPT_CTECONFIG(28) */
238 0x00, 0x00, 0x00, 0x04, 0x08,
239};
240
241static const u8 init_vals_ver_21[] = {
242 /* QT602240_GEN_COMMAND(6) */
243 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
244 /* QT602240_GEN_POWER(7) */
245 0x20, 0xff, 0x32,
246 /* QT602240_GEN_ACQUIRE(8) */
247 0x0a, 0x00, 0x05, 0x00, 0x00, 0x00, 0x09, 0x23,
248 /* QT602240_TOUCH_MULTI(9) */
249 0x00, 0x00, 0x00, 0x13, 0x0b, 0x00, 0x00, 0x00, 0x02, 0x00,
250 0x00, 0x01, 0x01, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00,
251 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
252 /* QT602240_TOUCH_KEYARRAY(15) */
253 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
254 0x00,
255 /* QT602240_SPT_GPIOPWM(19) */
256 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
257 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
258 /* QT602240_PROCI_GRIPFACE(20) */
259 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x28, 0x04,
260 0x0f, 0x0a,
261 /* QT602240_PROCG_NOISE(22) */
262 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x23, 0x00,
263 0x00, 0x05, 0x0f, 0x19, 0x23, 0x2d, 0x03,
264 /* QT602240_TOUCH_PROXIMITY(23) */
265 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
266 0x00, 0x00, 0x00,
267 /* QT602240_PROCI_ONETOUCH(24) */
268 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
269 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
270 /* QT602240_SPT_SELFTEST(25) */
271 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
272 0x00, 0x00, 0x00, 0x00,
273 /* QT602240_PROCI_TWOTOUCH(27) */
274 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
275 /* QT602240_SPT_CTECONFIG(28) */
276 0x00, 0x00, 0x00, 0x08, 0x10, 0x00,
277};
278
279static const u8 init_vals_ver_22[] = {
280 /* QT602240_GEN_COMMAND(6) */
281 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
282 /* QT602240_GEN_POWER(7) */
283 0x20, 0xff, 0x32,
284 /* QT602240_GEN_ACQUIRE(8) */
285 0x0a, 0x00, 0x05, 0x00, 0x00, 0x00, 0x09, 0x23,
286 /* QT602240_TOUCH_MULTI(9) */
287 0x00, 0x00, 0x00, 0x13, 0x0b, 0x00, 0x00, 0x00, 0x02, 0x00,
288 0x00, 0x01, 0x01, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00,
289 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
290 0x00,
291 /* QT602240_TOUCH_KEYARRAY(15) */
292 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
293 0x00,
294 /* QT602240_SPT_GPIOPWM(19) */
295 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
296 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
297 /* QT602240_PROCI_GRIPFACE(20) */
298 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x28, 0x04,
299 0x0f, 0x0a,
300 /* QT602240_PROCG_NOISE(22) */
301 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x23, 0x00,
302 0x00, 0x05, 0x0f, 0x19, 0x23, 0x2d, 0x03,
303 /* QT602240_TOUCH_PROXIMITY(23) */
304 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
305 0x00, 0x00, 0x00, 0x00, 0x00,
306 /* QT602240_PROCI_ONETOUCH(24) */
307 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
308 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
309 /* QT602240_SPT_SELFTEST(25) */
310 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
311 0x00, 0x00, 0x00, 0x00,
312 /* QT602240_PROCI_TWOTOUCH(27) */
313 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
314 /* QT602240_SPT_CTECONFIG(28) */
315 0x00, 0x00, 0x00, 0x08, 0x10, 0x00,
316};
317
318struct qt602240_info {
319 u8 family_id;
320 u8 variant_id;
321 u8 version;
322 u8 build;
323 u8 matrix_xsize;
324 u8 matrix_ysize;
325 u8 object_num;
326};
327
328struct qt602240_object {
329 u8 type;
330 u16 start_address;
331 u8 size;
332 u8 instances;
333 u8 num_report_ids;
334
335 /* to map object and message */
336 u8 max_reportid;
337};
338
339struct qt602240_message {
340 u8 reportid;
341 u8 message[7];
342 u8 checksum;
343};
344
345struct qt602240_finger {
346 int status;
347 int x;
348 int y;
349 int area;
350};
351
352/* Each client has this additional data */
353struct qt602240_data {
354 struct i2c_client *client;
355 struct input_dev *input_dev;
356 const struct qt602240_platform_data *pdata;
357 struct qt602240_object *object_table;
358 struct qt602240_info info;
359 struct qt602240_finger finger[QT602240_MAX_FINGER];
360 unsigned int irq;
361};
362
363static bool qt602240_object_readable(unsigned int type)
364{
365 switch (type) {
366 case QT602240_GEN_MESSAGE:
367 case QT602240_GEN_COMMAND:
368 case QT602240_GEN_POWER:
369 case QT602240_GEN_ACQUIRE:
370 case QT602240_TOUCH_MULTI:
371 case QT602240_TOUCH_KEYARRAY:
372 case QT602240_TOUCH_PROXIMITY:
373 case QT602240_PROCI_GRIPFACE:
374 case QT602240_PROCG_NOISE:
375 case QT602240_PROCI_ONETOUCH:
376 case QT602240_PROCI_TWOTOUCH:
377 case QT602240_SPT_COMMSCONFIG:
378 case QT602240_SPT_GPIOPWM:
379 case QT602240_SPT_SELFTEST:
380 case QT602240_SPT_CTECONFIG:
381 case QT602240_SPT_USERDATA:
382 return true;
383 default:
384 return false;
385 }
386}
387
388static bool qt602240_object_writable(unsigned int type)
389{
390 switch (type) {
391 case QT602240_GEN_COMMAND:
392 case QT602240_GEN_POWER:
393 case QT602240_GEN_ACQUIRE:
394 case QT602240_TOUCH_MULTI:
395 case QT602240_TOUCH_KEYARRAY:
396 case QT602240_TOUCH_PROXIMITY:
397 case QT602240_PROCI_GRIPFACE:
398 case QT602240_PROCG_NOISE:
399 case QT602240_PROCI_ONETOUCH:
400 case QT602240_PROCI_TWOTOUCH:
401 case QT602240_SPT_GPIOPWM:
402 case QT602240_SPT_SELFTEST:
403 case QT602240_SPT_CTECONFIG:
404 return true;
405 default:
406 return false;
407 }
408}
409
410static void qt602240_dump_message(struct device *dev,
411 struct qt602240_message *message)
412{
413 dev_dbg(dev, "reportid:\t0x%x\n", message->reportid);
414 dev_dbg(dev, "message1:\t0x%x\n", message->message[0]);
415 dev_dbg(dev, "message2:\t0x%x\n", message->message[1]);
416 dev_dbg(dev, "message3:\t0x%x\n", message->message[2]);
417 dev_dbg(dev, "message4:\t0x%x\n", message->message[3]);
418 dev_dbg(dev, "message5:\t0x%x\n", message->message[4]);
419 dev_dbg(dev, "message6:\t0x%x\n", message->message[5]);
420 dev_dbg(dev, "message7:\t0x%x\n", message->message[6]);
421 dev_dbg(dev, "checksum:\t0x%x\n", message->checksum);
422}
423
424static int qt602240_check_bootloader(struct i2c_client *client,
425 unsigned int state)
426{
427 u8 val;
428
429recheck:
430 if (i2c_master_recv(client, &val, 1) != 1) {
431 dev_err(&client->dev, "%s: i2c recv failed\n", __func__);
432 return -EIO;
433 }
434
435 switch (state) {
436 case QT602240_WAITING_BOOTLOAD_CMD:
437 case QT602240_WAITING_FRAME_DATA:
438 val &= ~QT602240_BOOT_STATUS_MASK;
439 break;
440 case QT602240_FRAME_CRC_PASS:
441 if (val == QT602240_FRAME_CRC_CHECK)
442 goto recheck;
443 break;
444 default:
445 return -EINVAL;
446 }
447
448 if (val != state) {
449 dev_err(&client->dev, "Unvalid bootloader mode state\n");
450 return -EINVAL;
451 }
452
453 return 0;
454}
455
456static int qt602240_unlock_bootloader(struct i2c_client *client)
457{
458 u8 buf[2];
459
460 buf[0] = QT602240_UNLOCK_CMD_LSB;
461 buf[1] = QT602240_UNLOCK_CMD_MSB;
462
463 if (i2c_master_send(client, buf, 2) != 2) {
464 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
465 return -EIO;
466 }
467
468 return 0;
469}
470
471static int qt602240_fw_write(struct i2c_client *client,
472 const u8 *data, unsigned int frame_size)
473{
474 if (i2c_master_send(client, data, frame_size) != frame_size) {
475 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
476 return -EIO;
477 }
478
479 return 0;
480}
481
482static int __qt602240_read_reg(struct i2c_client *client,
483 u16 reg, u16 len, void *val)
484{
485 struct i2c_msg xfer[2];
486 u8 buf[2];
487
488 buf[0] = reg & 0xff;
489 buf[1] = (reg >> 8) & 0xff;
490
491 /* Write register */
492 xfer[0].addr = client->addr;
493 xfer[0].flags = 0;
494 xfer[0].len = 2;
495 xfer[0].buf = buf;
496
497 /* Read data */
498 xfer[1].addr = client->addr;
499 xfer[1].flags = I2C_M_RD;
500 xfer[1].len = len;
501 xfer[1].buf = val;
502
503 if (i2c_transfer(client->adapter, xfer, 2) != 2) {
504 dev_err(&client->dev, "%s: i2c transfer failed\n", __func__);
505 return -EIO;
506 }
507
508 return 0;
509}
510
511static int qt602240_read_reg(struct i2c_client *client, u16 reg, u8 *val)
512{
513 return __qt602240_read_reg(client, reg, 1, val);
514}
515
516static int qt602240_write_reg(struct i2c_client *client, u16 reg, u8 val)
517{
518 u8 buf[3];
519
520 buf[0] = reg & 0xff;
521 buf[1] = (reg >> 8) & 0xff;
522 buf[2] = val;
523
524 if (i2c_master_send(client, buf, 3) != 3) {
525 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
526 return -EIO;
527 }
528
529 return 0;
530}
531
532static int qt602240_read_object_table(struct i2c_client *client,
533 u16 reg, u8 *object_buf)
534{
535 return __qt602240_read_reg(client, reg, QT602240_OBJECT_SIZE,
536 object_buf);
537}
538
539static struct qt602240_object *
540qt602240_get_object(struct qt602240_data *data, u8 type)
541{
542 struct qt602240_object *object;
543 int i;
544
545 for (i = 0; i < data->info.object_num; i++) {
546 object = data->object_table + i;
547 if (object->type == type)
548 return object;
549 }
550
551 dev_err(&data->client->dev, "Invalid object type\n");
552 return NULL;
553}
554
555static int qt602240_read_message(struct qt602240_data *data,
556 struct qt602240_message *message)
557{
558 struct qt602240_object *object;
559 u16 reg;
560
561 object = qt602240_get_object(data, QT602240_GEN_MESSAGE);
562 if (!object)
563 return -EINVAL;
564
565 reg = object->start_address;
566 return __qt602240_read_reg(data->client, reg,
567 sizeof(struct qt602240_message), message);
568}
569
570static int qt602240_read_object(struct qt602240_data *data,
571 u8 type, u8 offset, u8 *val)
572{
573 struct qt602240_object *object;
574 u16 reg;
575
576 object = qt602240_get_object(data, type);
577 if (!object)
578 return -EINVAL;
579
580 reg = object->start_address;
581 return __qt602240_read_reg(data->client, reg + offset, 1, val);
582}
583
584static int qt602240_write_object(struct qt602240_data *data,
585 u8 type, u8 offset, u8 val)
586{
587 struct qt602240_object *object;
588 u16 reg;
589
590 object = qt602240_get_object(data, type);
591 if (!object)
592 return -EINVAL;
593
594 reg = object->start_address;
595 return qt602240_write_reg(data->client, reg + offset, val);
596}
597
598static void qt602240_input_report(struct qt602240_data *data, int single_id)
599{
600 struct qt602240_finger *finger = data->finger;
601 struct input_dev *input_dev = data->input_dev;
602 int status = finger[single_id].status;
603 int finger_num = 0;
604 int id;
605
606 for (id = 0; id < QT602240_MAX_FINGER; id++) {
607 if (!finger[id].status)
608 continue;
609
610 input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
611 finger[id].status != QT602240_RELEASE ?
612 finger[id].area : 0);
613 input_report_abs(input_dev, ABS_MT_POSITION_X,
614 finger[id].x);
615 input_report_abs(input_dev, ABS_MT_POSITION_Y,
616 finger[id].y);
617 input_mt_sync(input_dev);
618
619 if (finger[id].status == QT602240_RELEASE)
620 finger[id].status = 0;
621 else
622 finger_num++;
623 }
624
625 input_report_key(input_dev, BTN_TOUCH, finger_num > 0);
626
627 if (status != QT602240_RELEASE) {
628 input_report_abs(input_dev, ABS_X, finger[single_id].x);
629 input_report_abs(input_dev, ABS_Y, finger[single_id].y);
630 }
631
632 input_sync(input_dev);
633}
634
635static void qt602240_input_touchevent(struct qt602240_data *data,
636 struct qt602240_message *message, int id)
637{
638 struct qt602240_finger *finger = data->finger;
639 struct device *dev = &data->client->dev;
640 u8 status = message->message[0];
641 int x;
642 int y;
643 int area;
644
645 /* Check the touch is present on the screen */
646 if (!(status & QT602240_DETECT)) {
647 if (status & QT602240_RELEASE) {
648 dev_dbg(dev, "[%d] released\n", id);
649
650 finger[id].status = QT602240_RELEASE;
651 qt602240_input_report(data, id);
652 }
653 return;
654 }
655
656 /* Check only AMP detection */
657 if (!(status & (QT602240_PRESS | QT602240_MOVE)))
658 return;
659
660 x = (message->message[1] << 2) | ((message->message[3] & ~0x3f) >> 6);
661 y = (message->message[2] << 2) | ((message->message[3] & ~0xf3) >> 2);
662 area = message->message[4];
663
664 dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id,
665 status & QT602240_MOVE ? "moved" : "pressed",
666 x, y, area);
667
668 finger[id].status = status & QT602240_MOVE ?
669 QT602240_MOVE : QT602240_PRESS;
670 finger[id].x = x;
671 finger[id].y = y;
672 finger[id].area = area;
673
674 qt602240_input_report(data, id);
675}
676
677static irqreturn_t qt602240_interrupt(int irq, void *dev_id)
678{
679 struct qt602240_data *data = dev_id;
680 struct qt602240_message message;
681 struct qt602240_object *object;
682 struct device *dev = &data->client->dev;
683 int id;
684 u8 reportid;
685 u8 max_reportid;
686 u8 min_reportid;
687
688 do {
689 if (qt602240_read_message(data, &message)) {
690 dev_err(dev, "Failed to read message\n");
691 goto end;
692 }
693
694 reportid = message.reportid;
695
696 /* whether reportid is thing of QT602240_TOUCH_MULTI */
697 object = qt602240_get_object(data, QT602240_TOUCH_MULTI);
698 if (!object)
699 goto end;
700
701 max_reportid = object->max_reportid;
702 min_reportid = max_reportid - object->num_report_ids + 1;
703 id = reportid - min_reportid;
704
705 if (reportid >= min_reportid && reportid <= max_reportid)
706 qt602240_input_touchevent(data, &message, id);
707 else
708 qt602240_dump_message(dev, &message);
709 } while (reportid != 0xff);
710
711end:
712 return IRQ_HANDLED;
713}
714
715static int qt602240_check_reg_init(struct qt602240_data *data)
716{
717 struct qt602240_object *object;
718 struct device *dev = &data->client->dev;
719 int index = 0;
720 int i, j;
721 u8 version = data->info.version;
722 u8 *init_vals;
723
724 switch (version) {
725 case QT602240_VER_20:
726 init_vals = (u8 *)init_vals_ver_20;
727 break;
728 case QT602240_VER_21:
729 init_vals = (u8 *)init_vals_ver_21;
730 break;
731 case QT602240_VER_22:
732 init_vals = (u8 *)init_vals_ver_22;
733 break;
734 default:
735 dev_err(dev, "Firmware version %d doesn't support\n", version);
736 return -EINVAL;
737 }
738
739 for (i = 0; i < data->info.object_num; i++) {
740 object = data->object_table + i;
741
742 if (!qt602240_object_writable(object->type))
743 continue;
744
745 for (j = 0; j < object->size + 1; j++)
746 qt602240_write_object(data, object->type, j,
747 init_vals[index + j]);
748
749 index += object->size + 1;
750 }
751
752 return 0;
753}
754
755static int qt602240_check_matrix_size(struct qt602240_data *data)
756{
757 const struct qt602240_platform_data *pdata = data->pdata;
758 struct device *dev = &data->client->dev;
759 int mode = -1;
760 int error;
761 u8 val;
762
763 dev_dbg(dev, "Number of X lines: %d\n", pdata->x_line);
764 dev_dbg(dev, "Number of Y lines: %d\n", pdata->y_line);
765
766 switch (pdata->x_line) {
767 case 0 ... 15:
768 if (pdata->y_line <= 14)
769 mode = 0;
770 break;
771 case 16:
772 if (pdata->y_line <= 12)
773 mode = 1;
774 if (pdata->y_line == 13 || pdata->y_line == 14)
775 mode = 0;
776 break;
777 case 17:
778 if (pdata->y_line <= 11)
779 mode = 2;
780 if (pdata->y_line == 12 || pdata->y_line == 13)
781 mode = 1;
782 break;
783 case 18:
784 if (pdata->y_line <= 10)
785 mode = 3;
786 if (pdata->y_line == 11 || pdata->y_line == 12)
787 mode = 2;
788 break;
789 case 19:
790 if (pdata->y_line <= 9)
791 mode = 4;
792 if (pdata->y_line == 10 || pdata->y_line == 11)
793 mode = 3;
794 break;
795 case 20:
796 mode = 4;
797 }
798
799 if (mode < 0) {
800 dev_err(dev, "Invalid X/Y lines\n");
801 return -EINVAL;
802 }
803
804 error = qt602240_read_object(data, QT602240_SPT_CTECONFIG,
805 QT602240_CTE_MODE, &val);
806 if (error)
807 return error;
808
809 if (mode == val)
810 return 0;
811
812 /* Change the CTE configuration */
813 qt602240_write_object(data, QT602240_SPT_CTECONFIG,
814 QT602240_CTE_CTRL, 1);
815 qt602240_write_object(data, QT602240_SPT_CTECONFIG,
816 QT602240_CTE_MODE, mode);
817 qt602240_write_object(data, QT602240_SPT_CTECONFIG,
818 QT602240_CTE_CTRL, 0);
819
820 return 0;
821}
822
823static int qt602240_make_highchg(struct qt602240_data *data)
824{
825 struct device *dev = &data->client->dev;
826 int count = 10;
827 int error;
828 u8 val;
829
830 /* Read dummy message to make high CHG pin */
831 do {
832 error = qt602240_read_object(data, QT602240_GEN_MESSAGE, 0, &val);
833 if (error)
834 return error;
835 } while ((val != 0xff) && --count);
836
837 if (!count) {
838 dev_err(dev, "CHG pin isn't cleared\n");
839 return -EBUSY;
840 }
841
842 return 0;
843}
844
845static void qt602240_handle_pdata(struct qt602240_data *data)
846{
847 const struct qt602240_platform_data *pdata = data->pdata;
848 u8 voltage;
849
850 /* Set touchscreen lines */
851 qt602240_write_object(data, QT602240_TOUCH_MULTI, QT602240_TOUCH_XSIZE,
852 pdata->x_line);
853 qt602240_write_object(data, QT602240_TOUCH_MULTI, QT602240_TOUCH_YSIZE,
854 pdata->y_line);
855
856 /* Set touchscreen orient */
857 qt602240_write_object(data, QT602240_TOUCH_MULTI, QT602240_TOUCH_ORIENT,
858 pdata->orient);
859
860 /* Set touchscreen burst length */
861 qt602240_write_object(data, QT602240_TOUCH_MULTI,
862 QT602240_TOUCH_BLEN, pdata->blen);
863
864 /* Set touchscreen threshold */
865 qt602240_write_object(data, QT602240_TOUCH_MULTI,
866 QT602240_TOUCH_TCHTHR, pdata->threshold);
867
868 /* Set touchscreen resolution */
869 qt602240_write_object(data, QT602240_TOUCH_MULTI,
870 QT602240_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff);
871 qt602240_write_object(data, QT602240_TOUCH_MULTI,
872 QT602240_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8);
873 qt602240_write_object(data, QT602240_TOUCH_MULTI,
874 QT602240_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff);
875 qt602240_write_object(data, QT602240_TOUCH_MULTI,
876 QT602240_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8);
877
878 /* Set touchscreen voltage */
879 if (data->info.version >= QT602240_VER_21 && pdata->voltage) {
880 if (pdata->voltage < QT602240_VOLTAGE_DEFAULT) {
881 voltage = (QT602240_VOLTAGE_DEFAULT - pdata->voltage) /
882 QT602240_VOLTAGE_STEP;
883 voltage = 0xff - voltage + 1;
884 } else
885 voltage = (pdata->voltage - QT602240_VOLTAGE_DEFAULT) /
886 QT602240_VOLTAGE_STEP;
887
888 qt602240_write_object(data, QT602240_SPT_CTECONFIG,
889 QT602240_CTE_VOLTAGE, voltage);
890 }
891}
892
893static int qt602240_get_info(struct qt602240_data *data)
894{
895 struct i2c_client *client = data->client;
896 struct qt602240_info *info = &data->info;
897 int error;
898 u8 val;
899
900 error = qt602240_read_reg(client, QT602240_FAMILY_ID, &val);
901 if (error)
902 return error;
903 info->family_id = val;
904
905 error = qt602240_read_reg(client, QT602240_VARIANT_ID, &val);
906 if (error)
907 return error;
908 info->variant_id = val;
909
910 error = qt602240_read_reg(client, QT602240_VERSION, &val);
911 if (error)
912 return error;
913 info->version = val;
914
915 error = qt602240_read_reg(client, QT602240_BUILD, &val);
916 if (error)
917 return error;
918 info->build = val;
919
920 error = qt602240_read_reg(client, QT602240_OBJECT_NUM, &val);
921 if (error)
922 return error;
923 info->object_num = val;
924
925 return 0;
926}
927
928static int qt602240_get_object_table(struct qt602240_data *data)
929{
930 int error;
931 int i;
932 u16 reg;
933 u8 reportid = 0;
934 u8 buf[QT602240_OBJECT_SIZE];
935
936 for (i = 0; i < data->info.object_num; i++) {
937 struct qt602240_object *object = data->object_table + i;
938
939 reg = QT602240_OBJECT_START + QT602240_OBJECT_SIZE * i;
940 error = qt602240_read_object_table(data->client, reg, buf);
941 if (error)
942 return error;
943
944 object->type = buf[0];
945 object->start_address = (buf[2] << 8) | buf[1];
946 object->size = buf[3];
947 object->instances = buf[4];
948 object->num_report_ids = buf[5];
949
950 if (object->num_report_ids) {
951 reportid += object->num_report_ids *
952 (object->instances + 1);
953 object->max_reportid = reportid;
954 }
955 }
956
957 return 0;
958}
959
960static int qt602240_initialize(struct qt602240_data *data)
961{
962 struct i2c_client *client = data->client;
963 struct qt602240_info *info = &data->info;
964 int error;
965 u8 val;
966
967 error = qt602240_get_info(data);
968 if (error)
969 return error;
970
971 data->object_table = kcalloc(info->object_num,
972 sizeof(struct qt602240_object),
973 GFP_KERNEL);
974 if (!data->object_table) {
975 dev_err(&client->dev, "Failed to allocate memory\n");
976 return -ENOMEM;
977 }
978
979 /* Get object table information */
980 error = qt602240_get_object_table(data);
981 if (error)
982 return error;
983
984 /* Check register init values */
985 error = qt602240_check_reg_init(data);
986 if (error)
987 return error;
988
989 /* Check X/Y matrix size */
990 error = qt602240_check_matrix_size(data);
991 if (error)
992 return error;
993
994 error = qt602240_make_highchg(data);
995 if (error)
996 return error;
997
998 qt602240_handle_pdata(data);
999
1000 /* Backup to memory */
1001 qt602240_write_object(data, QT602240_GEN_COMMAND,
1002 QT602240_COMMAND_BACKUPNV,
1003 QT602240_BACKUP_VALUE);
1004 msleep(QT602240_BACKUP_TIME);
1005
1006 /* Soft reset */
1007 qt602240_write_object(data, QT602240_GEN_COMMAND,
1008 QT602240_COMMAND_RESET, 1);
1009 msleep(QT602240_RESET_TIME);
1010
1011 /* Update matrix size at info struct */
1012 error = qt602240_read_reg(client, QT602240_MATRIX_X_SIZE, &val);
1013 if (error)
1014 return error;
1015 info->matrix_xsize = val;
1016
1017 error = qt602240_read_reg(client, QT602240_MATRIX_Y_SIZE, &val);
1018 if (error)
1019 return error;
1020 info->matrix_ysize = val;
1021
1022 dev_info(&client->dev,
1023 "Family ID: %d Variant ID: %d Version: %d Build: %d\n",
1024 info->family_id, info->variant_id, info->version,
1025 info->build);
1026
1027 dev_info(&client->dev,
1028 "Matrix X Size: %d Matrix Y Size: %d Object Num: %d\n",
1029 info->matrix_xsize, info->matrix_ysize,
1030 info->object_num);
1031
1032 return 0;
1033}
1034
1035static ssize_t qt602240_object_show(struct device *dev,
1036 struct device_attribute *attr, char *buf)
1037{
1038 struct qt602240_data *data = dev_get_drvdata(dev);
1039 struct qt602240_object *object;
1040 int count = 0;
1041 int i, j;
1042 int error;
1043 u8 val;
1044
1045 for (i = 0; i < data->info.object_num; i++) {
1046 object = data->object_table + i;
1047
1048 count += sprintf(buf + count,
1049 "Object Table Element %d(Type %d)\n",
1050 i + 1, object->type);
1051
1052 if (!qt602240_object_readable(object->type)) {
1053 count += sprintf(buf + count, "\n");
1054 continue;
1055 }
1056
1057 for (j = 0; j < object->size + 1; j++) {
1058 error = qt602240_read_object(data,
1059 object->type, j, &val);
1060 if (error)
1061 return error;
1062
1063 count += sprintf(buf + count,
1064 " Byte %d: 0x%x (%d)\n", j, val, val);
1065 }
1066
1067 count += sprintf(buf + count, "\n");
1068 }
1069
1070 return count;
1071}
1072
1073static int qt602240_load_fw(struct device *dev, const char *fn)
1074{
1075 struct qt602240_data *data = dev_get_drvdata(dev);
1076 struct i2c_client *client = data->client;
1077 const struct firmware *fw = NULL;
1078 unsigned int frame_size;
1079 unsigned int pos = 0;
1080 int ret;
1081
1082 ret = request_firmware(&fw, fn, dev);
1083 if (ret) {
1084 dev_err(dev, "Unable to open firmware %s\n", fn);
1085 return ret;
1086 }
1087
1088 /* Change to the bootloader mode */
1089 qt602240_write_object(data, QT602240_GEN_COMMAND,
1090 QT602240_COMMAND_RESET, QT602240_BOOT_VALUE);
1091 msleep(QT602240_RESET_TIME);
1092
1093 /* Change to slave address of bootloader */
1094 if (client->addr == QT602240_APP_LOW)
1095 client->addr = QT602240_BOOT_LOW;
1096 else
1097 client->addr = QT602240_BOOT_HIGH;
1098
1099 ret = qt602240_check_bootloader(client, QT602240_WAITING_BOOTLOAD_CMD);
1100 if (ret)
1101 goto out;
1102
1103 /* Unlock bootloader */
1104 qt602240_unlock_bootloader(client);
1105
1106 while (pos < fw->size) {
1107 ret = qt602240_check_bootloader(client,
1108 QT602240_WAITING_FRAME_DATA);
1109 if (ret)
1110 goto out;
1111
1112 frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1));
1113
1114 /* We should add 2 at frame size as the the firmware data is not
1115 * included the CRC bytes.
1116 */
1117 frame_size += 2;
1118
1119 /* Write one frame to device */
1120 qt602240_fw_write(client, fw->data + pos, frame_size);
1121
1122 ret = qt602240_check_bootloader(client,
1123 QT602240_FRAME_CRC_PASS);
1124 if (ret)
1125 goto out;
1126
1127 pos += frame_size;
1128
1129 dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size);
1130 }
1131
1132out:
1133 release_firmware(fw);
1134
1135 /* Change to slave address of application */
1136 if (client->addr == QT602240_BOOT_LOW)
1137 client->addr = QT602240_APP_LOW;
1138 else
1139 client->addr = QT602240_APP_HIGH;
1140
1141 return ret;
1142}
1143
1144static ssize_t qt602240_update_fw_store(struct device *dev,
1145 struct device_attribute *attr,
1146 const char *buf, size_t count)
1147{
1148 struct qt602240_data *data = dev_get_drvdata(dev);
1149 unsigned int version;
1150 int error;
1151
1152 if (sscanf(buf, "%u", &version) != 1) {
1153 dev_err(dev, "Invalid values\n");
1154 return -EINVAL;
1155 }
1156
1157 if (data->info.version < QT602240_VER_21 || version < QT602240_VER_21) {
1158 dev_err(dev, "FW update supported starting with version 21\n");
1159 return -EINVAL;
1160 }
1161
1162 disable_irq(data->irq);
1163
1164 error = qt602240_load_fw(dev, QT602240_FW_NAME);
1165 if (error) {
1166 dev_err(dev, "The firmware update failed(%d)\n", error);
1167 count = error;
1168 } else {
1169 dev_dbg(dev, "The firmware update succeeded\n");
1170
1171 /* Wait for reset */
1172 msleep(QT602240_FWRESET_TIME);
1173
1174 kfree(data->object_table);
1175 data->object_table = NULL;
1176
1177 qt602240_initialize(data);
1178 }
1179
1180 enable_irq(data->irq);
1181
1182 return count;
1183}
1184
1185static DEVICE_ATTR(object, 0444, qt602240_object_show, NULL);
1186static DEVICE_ATTR(update_fw, 0664, NULL, qt602240_update_fw_store);
1187
1188static struct attribute *qt602240_attrs[] = {
1189 &dev_attr_object.attr,
1190 &dev_attr_update_fw.attr,
1191 NULL
1192};
1193
1194static const struct attribute_group qt602240_attr_group = {
1195 .attrs = qt602240_attrs,
1196};
1197
1198static void qt602240_start(struct qt602240_data *data)
1199{
1200 /* Touch enable */
1201 qt602240_write_object(data,
1202 QT602240_TOUCH_MULTI, QT602240_TOUCH_CTRL, 0x83);
1203}
1204
1205static void qt602240_stop(struct qt602240_data *data)
1206{
1207 /* Touch disable */
1208 qt602240_write_object(data,
1209 QT602240_TOUCH_MULTI, QT602240_TOUCH_CTRL, 0);
1210}
1211
1212static int qt602240_input_open(struct input_dev *dev)
1213{
1214 struct qt602240_data *data = input_get_drvdata(dev);
1215
1216 qt602240_start(data);
1217
1218 return 0;
1219}
1220
1221static void qt602240_input_close(struct input_dev *dev)
1222{
1223 struct qt602240_data *data = input_get_drvdata(dev);
1224
1225 qt602240_stop(data);
1226}
1227
1228static int __devinit qt602240_probe(struct i2c_client *client,
1229 const struct i2c_device_id *id)
1230{
1231 struct qt602240_data *data;
1232 struct input_dev *input_dev;
1233 int error;
1234
1235 if (!client->dev.platform_data)
1236 return -EINVAL;
1237
1238 data = kzalloc(sizeof(struct qt602240_data), GFP_KERNEL);
1239 input_dev = input_allocate_device();
1240 if (!data || !input_dev) {
1241 dev_err(&client->dev, "Failed to allocate memory\n");
1242 error = -ENOMEM;
1243 goto err_free_mem;
1244 }
1245
1246 input_dev->name = "AT42QT602240/ATMXT224 Touchscreen";
1247 input_dev->id.bustype = BUS_I2C;
1248 input_dev->dev.parent = &client->dev;
1249 input_dev->open = qt602240_input_open;
1250 input_dev->close = qt602240_input_close;
1251
1252 __set_bit(EV_ABS, input_dev->evbit);
1253 __set_bit(EV_KEY, input_dev->evbit);
1254 __set_bit(BTN_TOUCH, input_dev->keybit);
1255
1256 /* For single touch */
1257 input_set_abs_params(input_dev, ABS_X,
1258 0, QT602240_MAX_XC, 0, 0);
1259 input_set_abs_params(input_dev, ABS_Y,
1260 0, QT602240_MAX_YC, 0, 0);
1261
1262 /* For multi touch */
1263 input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
1264 0, QT602240_MAX_AREA, 0, 0);
1265 input_set_abs_params(input_dev, ABS_MT_POSITION_X,
1266 0, QT602240_MAX_XC, 0, 0);
1267 input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
1268 0, QT602240_MAX_YC, 0, 0);
1269
1270 input_set_drvdata(input_dev, data);
1271
1272 data->client = client;
1273 data->input_dev = input_dev;
1274 data->pdata = client->dev.platform_data;
1275 data->irq = client->irq;
1276
1277 i2c_set_clientdata(client, data);
1278
1279 error = qt602240_initialize(data);
1280 if (error)
1281 goto err_free_object;
1282
1283 error = request_threaded_irq(client->irq, NULL, qt602240_interrupt,
1284 IRQF_TRIGGER_FALLING, client->dev.driver->name, data);
1285 if (error) {
1286 dev_err(&client->dev, "Failed to register interrupt\n");
1287 goto err_free_object;
1288 }
1289
1290 error = input_register_device(input_dev);
1291 if (error)
1292 goto err_free_irq;
1293
1294 error = sysfs_create_group(&client->dev.kobj, &qt602240_attr_group);
1295 if (error)
1296 goto err_unregister_device;
1297
1298 return 0;
1299
1300err_unregister_device:
1301 input_unregister_device(input_dev);
1302 input_dev = NULL;
1303err_free_irq:
1304 free_irq(client->irq, data);
1305err_free_object:
1306 kfree(data->object_table);
1307err_free_mem:
1308 input_free_device(input_dev);
1309 kfree(data);
1310 return error;
1311}
1312
1313static int __devexit qt602240_remove(struct i2c_client *client)
1314{
1315 struct qt602240_data *data = i2c_get_clientdata(client);
1316
1317 sysfs_remove_group(&client->dev.kobj, &qt602240_attr_group);
1318 free_irq(data->irq, data);
1319 input_unregister_device(data->input_dev);
1320 kfree(data->object_table);
1321 kfree(data);
1322
1323 return 0;
1324}
1325
1326#ifdef CONFIG_PM
1327static int qt602240_suspend(struct device *dev)
1328{
1329 struct i2c_client *client = to_i2c_client(dev);
1330 struct qt602240_data *data = i2c_get_clientdata(client);
1331 struct input_dev *input_dev = data->input_dev;
1332
1333 mutex_lock(&input_dev->mutex);
1334
1335 if (input_dev->users)
1336 qt602240_stop(data);
1337
1338 mutex_unlock(&input_dev->mutex);
1339
1340 return 0;
1341}
1342
1343static int qt602240_resume(struct device *dev)
1344{
1345 struct i2c_client *client = to_i2c_client(dev);
1346 struct qt602240_data *data = i2c_get_clientdata(client);
1347 struct input_dev *input_dev = data->input_dev;
1348
1349 /* Soft reset */
1350 qt602240_write_object(data, QT602240_GEN_COMMAND,
1351 QT602240_COMMAND_RESET, 1);
1352
1353 msleep(QT602240_RESET_TIME);
1354
1355 mutex_lock(&input_dev->mutex);
1356
1357 if (input_dev->users)
1358 qt602240_start(data);
1359
1360 mutex_unlock(&input_dev->mutex);
1361
1362 return 0;
1363}
1364
1365static const struct dev_pm_ops qt602240_pm_ops = {
1366 .suspend = qt602240_suspend,
1367 .resume = qt602240_resume,
1368};
1369#endif
1370
1371static const struct i2c_device_id qt602240_id[] = {
1372 { "qt602240_ts", 0 },
1373 { }
1374};
1375MODULE_DEVICE_TABLE(i2c, qt602240_id);
1376
1377static struct i2c_driver qt602240_driver = {
1378 .driver = {
1379 .name = "qt602240_ts",
1380 .owner = THIS_MODULE,
1381#ifdef CONFIG_PM
1382 .pm = &qt602240_pm_ops,
1383#endif
1384 },
1385 .probe = qt602240_probe,
1386 .remove = __devexit_p(qt602240_remove),
1387 .id_table = qt602240_id,
1388};
1389
1390static int __init qt602240_init(void)
1391{
1392 return i2c_add_driver(&qt602240_driver);
1393}
1394
1395static void __exit qt602240_exit(void)
1396{
1397 i2c_del_driver(&qt602240_driver);
1398}
1399
1400module_init(qt602240_init);
1401module_exit(qt602240_exit);
1402
1403/* Module information */
1404MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
1405MODULE_DESCRIPTION("AT42QT602240/ATMXT224 Touchscreen driver");
1406MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
new file mode 100644
index 00000000000..87420616efa
--- /dev/null
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -0,0 +1,756 @@
1/*
2 * TSC2005 touchscreen driver
3 *
4 * Copyright (C) 2006-2010 Nokia Corporation
5 *
6 * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
7 * based on TSC2301 driver by Klaus K. Pedersen <klaus.k.pedersen@nokia.com>
8 *
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.
13 *
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.
18 *
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
22 *
23 */
24
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/input.h>
28#include <linux/interrupt.h>
29#include <linux/delay.h>
30#include <linux/pm.h>
31#include <linux/spi/spi.h>
32#include <linux/spi/tsc2005.h>
33
34/*
35 * The touchscreen interface operates as follows:
36 *
37 * 1) Pen is pressed against the touchscreen.
38 * 2) TSC2005 performs AD conversion.
39 * 3) After the conversion is done TSC2005 drives DAV line down.
40 * 4) GPIO IRQ is received and tsc2005_irq_thread() is scheduled.
41 * 5) tsc2005_irq_thread() queues up an spi transfer to fetch the x, y, z1, z2
42 * values.
43 * 6) tsc2005_irq_thread() reports coordinates to input layer and sets up
44 * tsc2005_penup_timer() to be called after TSC2005_PENUP_TIME_MS (40ms).
45 * 7) When the penup timer expires, there have not been touch or DAV interrupts
46 * during the last 40ms which means the pen has been lifted.
47 *
48 * ESD recovery via a hardware reset is done if the TSC2005 doesn't respond
49 * after a configurable period (in ms) of activity. If esd_timeout is 0, the
50 * watchdog is disabled.
51 */
52
53/* control byte 1 */
54#define TSC2005_CMD 0x80
55#define TSC2005_CMD_NORMAL 0x00
56#define TSC2005_CMD_STOP 0x01
57#define TSC2005_CMD_12BIT 0x04
58
59/* control byte 0 */
60#define TSC2005_REG_READ 0x0001
61#define TSC2005_REG_PND0 0x0002
62#define TSC2005_REG_X 0x0000
63#define TSC2005_REG_Y 0x0008
64#define TSC2005_REG_Z1 0x0010
65#define TSC2005_REG_Z2 0x0018
66#define TSC2005_REG_TEMP_HIGH 0x0050
67#define TSC2005_REG_CFR0 0x0060
68#define TSC2005_REG_CFR1 0x0068
69#define TSC2005_REG_CFR2 0x0070
70
71/* configuration register 0 */
72#define TSC2005_CFR0_PRECHARGE_276US 0x0040
73#define TSC2005_CFR0_STABTIME_1MS 0x0300
74#define TSC2005_CFR0_CLOCK_1MHZ 0x1000
75#define TSC2005_CFR0_RESOLUTION12 0x2000
76#define TSC2005_CFR0_PENMODE 0x8000
77#define TSC2005_CFR0_INITVALUE (TSC2005_CFR0_STABTIME_1MS | \
78 TSC2005_CFR0_CLOCK_1MHZ | \
79 TSC2005_CFR0_RESOLUTION12 | \
80 TSC2005_CFR0_PRECHARGE_276US | \
81 TSC2005_CFR0_PENMODE)
82
83/* bits common to both read and write of configuration register 0 */
84#define TSC2005_CFR0_RW_MASK 0x3fff
85
86/* configuration register 1 */
87#define TSC2005_CFR1_BATCHDELAY_4MS 0x0003
88#define TSC2005_CFR1_INITVALUE TSC2005_CFR1_BATCHDELAY_4MS
89
90/* configuration register 2 */
91#define TSC2005_CFR2_MAVE_Z 0x0004
92#define TSC2005_CFR2_MAVE_Y 0x0008
93#define TSC2005_CFR2_MAVE_X 0x0010
94#define TSC2005_CFR2_AVG_7 0x0800
95#define TSC2005_CFR2_MEDIUM_15 0x3000
96#define TSC2005_CFR2_INITVALUE (TSC2005_CFR2_MAVE_X | \
97 TSC2005_CFR2_MAVE_Y | \
98 TSC2005_CFR2_MAVE_Z | \
99 TSC2005_CFR2_MEDIUM_15 | \
100 TSC2005_CFR2_AVG_7)
101
102#define MAX_12BIT 0xfff
103#define TSC2005_SPI_MAX_SPEED_HZ 10000000
104#define TSC2005_PENUP_TIME_MS 40
105
106struct tsc2005_spi_rd {
107 struct spi_transfer spi_xfer;
108 u32 spi_tx;
109 u32 spi_rx;
110};
111
112struct tsc2005 {
113 struct spi_device *spi;
114
115 struct spi_message spi_read_msg;
116 struct tsc2005_spi_rd spi_x;
117 struct tsc2005_spi_rd spi_y;
118 struct tsc2005_spi_rd spi_z1;
119 struct tsc2005_spi_rd spi_z2;
120
121 struct input_dev *idev;
122 char phys[32];
123
124 struct mutex mutex;
125
126 /* raw copy of previous x,y,z */
127 int in_x;
128 int in_y;
129 int in_z1;
130 int in_z2;
131
132 spinlock_t lock;
133 struct timer_list penup_timer;
134
135 unsigned int esd_timeout;
136 struct delayed_work esd_work;
137 unsigned long last_valid_interrupt;
138
139 unsigned int x_plate_ohm;
140
141 bool opened;
142 bool suspended;
143
144 bool pen_down;
145
146 void (*set_reset)(bool enable);
147};
148
149static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd)
150{
151 u8 tx = TSC2005_CMD | TSC2005_CMD_12BIT | cmd;
152 struct spi_transfer xfer = {
153 .tx_buf = &tx,
154 .len = 1,
155 .bits_per_word = 8,
156 };
157 struct spi_message msg;
158 int error;
159
160 spi_message_init(&msg);
161 spi_message_add_tail(&xfer, &msg);
162
163 error = spi_sync(ts->spi, &msg);
164 if (error) {
165 dev_err(&ts->spi->dev, "%s: failed, command: %x, error: %d\n",
166 __func__, cmd, error);
167 return error;
168 }
169
170 return 0;
171}
172
173static int tsc2005_write(struct tsc2005 *ts, u8 reg, u16 value)
174{
175 u32 tx = ((reg | TSC2005_REG_PND0) << 16) | value;
176 struct spi_transfer xfer = {
177 .tx_buf = &tx,
178 .len = 4,
179 .bits_per_word = 24,
180 };
181 struct spi_message msg;
182 int error;
183
184 spi_message_init(&msg);
185 spi_message_add_tail(&xfer, &msg);
186
187 error = spi_sync(ts->spi, &msg);
188 if (error) {
189 dev_err(&ts->spi->dev,
190 "%s: failed, register: %x, value: %x, error: %d\n",
191 __func__, reg, value, error);
192 return error;
193 }
194
195 return 0;
196}
197
198static void tsc2005_setup_read(struct tsc2005_spi_rd *rd, u8 reg, bool last)
199{
200 memset(rd, 0, sizeof(*rd));
201
202 rd->spi_tx = (reg | TSC2005_REG_READ) << 16;
203 rd->spi_xfer.tx_buf = &rd->spi_tx;
204 rd->spi_xfer.rx_buf = &rd->spi_rx;
205 rd->spi_xfer.len = 4;
206 rd->spi_xfer.bits_per_word = 24;
207 rd->spi_xfer.cs_change = !last;
208}
209
210static int tsc2005_read(struct tsc2005 *ts, u8 reg, u16 *value)
211{
212 struct tsc2005_spi_rd spi_rd;
213 struct spi_message msg;
214 int error;
215
216 tsc2005_setup_read(&spi_rd, reg, true);
217
218 spi_message_init(&msg);
219 spi_message_add_tail(&spi_rd.spi_xfer, &msg);
220
221 error = spi_sync(ts->spi, &msg);
222 if (error)
223 return error;
224
225 *value = spi_rd.spi_rx;
226 return 0;
227}
228
229static void tsc2005_update_pen_state(struct tsc2005 *ts,
230 int x, int y, int pressure)
231{
232 if (pressure) {
233 input_report_abs(ts->idev, ABS_X, x);
234 input_report_abs(ts->idev, ABS_Y, y);
235 input_report_abs(ts->idev, ABS_PRESSURE, pressure);
236 if (!ts->pen_down) {
237 input_report_key(ts->idev, BTN_TOUCH, !!pressure);
238 ts->pen_down = true;
239 }
240 } else {
241 input_report_abs(ts->idev, ABS_PRESSURE, 0);
242 if (ts->pen_down) {
243 input_report_key(ts->idev, BTN_TOUCH, 0);
244 ts->pen_down = false;
245 }
246 }
247 input_sync(ts->idev);
248 dev_dbg(&ts->spi->dev, "point(%4d,%4d), pressure (%4d)\n", x, y,
249 pressure);
250}
251
252static irqreturn_t tsc2005_irq_thread(int irq, void *_ts)
253{
254 struct tsc2005 *ts = _ts;
255 unsigned long flags;
256 unsigned int pressure;
257 u32 x, y;
258 u32 z1, z2;
259 int error;
260
261 /* read the coordinates */
262 error = spi_sync(ts->spi, &ts->spi_read_msg);
263 if (unlikely(error))
264 goto out;
265
266 x = ts->spi_x.spi_rx;
267 y = ts->spi_y.spi_rx;
268 z1 = ts->spi_z1.spi_rx;
269 z2 = ts->spi_z2.spi_rx;
270
271 /* validate position */
272 if (unlikely(x > MAX_12BIT || y > MAX_12BIT))
273 goto out;
274
275 /* Skip reading if the pressure components are out of range */
276 if (unlikely(z1 == 0 || z2 > MAX_12BIT || z1 >= z2))
277 goto out;
278
279 /*
280 * Skip point if this is a pen down with the exact same values as
281 * the value before pen-up - that implies SPI fed us stale data
282 */
283 if (!ts->pen_down &&
284 ts->in_x == x && ts->in_y == y &&
285 ts->in_z1 == z1 && ts->in_z2 == z2) {
286 goto out;
287 }
288
289 /*
290 * At this point we are happy we have a valid and useful reading.
291 * Remember it for later comparisons. We may now begin downsampling.
292 */
293 ts->in_x = x;
294 ts->in_y = y;
295 ts->in_z1 = z1;
296 ts->in_z2 = z2;
297
298 /* Compute touch pressure resistance using equation #1 */
299 pressure = x * (z2 - z1) / z1;
300 pressure = pressure * ts->x_plate_ohm / 4096;
301 if (unlikely(pressure > MAX_12BIT))
302 goto out;
303
304 spin_lock_irqsave(&ts->lock, flags);
305
306 tsc2005_update_pen_state(ts, x, y, pressure);
307 mod_timer(&ts->penup_timer,
308 jiffies + msecs_to_jiffies(TSC2005_PENUP_TIME_MS));
309
310 spin_unlock_irqrestore(&ts->lock, flags);
311
312 ts->last_valid_interrupt = jiffies;
313out:
314 return IRQ_HANDLED;
315}
316
317static void tsc2005_penup_timer(unsigned long data)
318{
319 struct tsc2005 *ts = (struct tsc2005 *)data;
320 unsigned long flags;
321
322 spin_lock_irqsave(&ts->lock, flags);
323 tsc2005_update_pen_state(ts, 0, 0, 0);
324 spin_unlock_irqrestore(&ts->lock, flags);
325}
326
327static void tsc2005_start_scan(struct tsc2005 *ts)
328{
329 tsc2005_write(ts, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE);
330 tsc2005_write(ts, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE);
331 tsc2005_write(ts, TSC2005_REG_CFR2, TSC2005_CFR2_INITVALUE);
332 tsc2005_cmd(ts, TSC2005_CMD_NORMAL);
333}
334
335static void tsc2005_stop_scan(struct tsc2005 *ts)
336{
337 tsc2005_cmd(ts, TSC2005_CMD_STOP);
338}
339
340/* must be called with ts->mutex held */
341static void __tsc2005_disable(struct tsc2005 *ts)
342{
343 tsc2005_stop_scan(ts);
344
345 disable_irq(ts->spi->irq);
346 del_timer_sync(&ts->penup_timer);
347
348 cancel_delayed_work_sync(&ts->esd_work);
349
350 enable_irq(ts->spi->irq);
351}
352
353/* must be called with ts->mutex held */
354static void __tsc2005_enable(struct tsc2005 *ts)
355{
356 tsc2005_start_scan(ts);
357
358 if (ts->esd_timeout && ts->set_reset) {
359 ts->last_valid_interrupt = jiffies;
360 schedule_delayed_work(&ts->esd_work,
361 round_jiffies(jiffies +
362 msecs_to_jiffies(ts->esd_timeout)));
363 }
364
365}
366
367static ssize_t tsc2005_selftest_show(struct device *dev,
368 struct device_attribute *attr,
369 char *buf)
370{
371 struct spi_device *spi = to_spi_device(dev);
372 struct tsc2005 *ts = spi_get_drvdata(spi);
373 u16 temp_high;
374 u16 temp_high_orig;
375 u16 temp_high_test;
376 bool success = true;
377 int error;
378
379 mutex_lock(&ts->mutex);
380
381 /*
382 * Test TSC2005 communications via temp high register.
383 */
384 __tsc2005_disable(ts);
385
386 error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high_orig);
387 if (error) {
388 dev_warn(dev, "selftest failed: read error %d\n", error);
389 success = false;
390 goto out;
391 }
392
393 temp_high_test = (temp_high_orig - 1) & MAX_12BIT;
394
395 error = tsc2005_write(ts, TSC2005_REG_TEMP_HIGH, temp_high_test);
396 if (error) {
397 dev_warn(dev, "selftest failed: write error %d\n", error);
398 success = false;
399 goto out;
400 }
401
402 error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high);
403 if (error) {
404 dev_warn(dev, "selftest failed: read error %d after write\n",
405 error);
406 success = false;
407 goto out;
408 }
409
410 if (temp_high != temp_high_test) {
411 dev_warn(dev, "selftest failed: %d != %d\n",
412 temp_high, temp_high_test);
413 success = false;
414 }
415
416 /* hardware reset */
417 ts->set_reset(false);
418 usleep_range(100, 500); /* only 10us required */
419 ts->set_reset(true);
420
421 if (!success)
422 goto out;
423
424 /* test that the reset really happened */
425 error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high);
426 if (error) {
427 dev_warn(dev, "selftest failed: read error %d after reset\n",
428 error);
429 success = false;
430 goto out;
431 }
432
433 if (temp_high != temp_high_orig) {
434 dev_warn(dev, "selftest failed after reset: %d != %d\n",
435 temp_high, temp_high_orig);
436 success = false;
437 }
438
439out:
440 __tsc2005_enable(ts);
441 mutex_unlock(&ts->mutex);
442
443 return sprintf(buf, "%d\n", success);
444}
445
446static DEVICE_ATTR(selftest, S_IRUGO, tsc2005_selftest_show, NULL);
447
448static struct attribute *tsc2005_attrs[] = {
449 &dev_attr_selftest.attr,
450 NULL
451};
452
453static mode_t tsc2005_attr_is_visible(struct kobject *kobj,
454 struct attribute *attr, int n)
455{
456 struct device *dev = container_of(kobj, struct device, kobj);
457 struct spi_device *spi = to_spi_device(dev);
458 struct tsc2005 *ts = spi_get_drvdata(spi);
459 mode_t mode = attr->mode;
460
461 if (attr == &dev_attr_selftest.attr) {
462 if (!ts->set_reset)
463 mode = 0;
464 }
465
466 return mode;
467}
468
469static const struct attribute_group tsc2005_attr_group = {
470 .is_visible = tsc2005_attr_is_visible,
471 .attrs = tsc2005_attrs,
472};
473
474static void tsc2005_esd_work(struct work_struct *work)
475{
476 struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work.work);
477 int error;
478 u16 r;
479
480 mutex_lock(&ts->mutex);
481
482 if (time_is_after_jiffies(ts->last_valid_interrupt +
483 msecs_to_jiffies(ts->esd_timeout)))
484 goto out;
485
486 /* We should be able to read register without disabling interrupts. */
487 error = tsc2005_read(ts, TSC2005_REG_CFR0, &r);
488 if (!error &&
489 !((r ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK)) {
490 goto out;
491 }
492
493 /*
494 * If we could not read our known value from configuration register 0
495 * then we should reset the controller as if from power-up and start
496 * scanning again.
497 */
498 dev_info(&ts->spi->dev, "TSC2005 not responding - resetting\n");
499
500 disable_irq(ts->spi->irq);
501 del_timer_sync(&ts->penup_timer);
502
503 tsc2005_update_pen_state(ts, 0, 0, 0);
504
505 ts->set_reset(false);
506 usleep_range(100, 500); /* only 10us required */
507 ts->set_reset(true);
508
509 enable_irq(ts->spi->irq);
510 tsc2005_start_scan(ts);
511
512out:
513 /* re-arm the watchdog */
514 schedule_delayed_work(&ts->esd_work,
515 round_jiffies(jiffies +
516 msecs_to_jiffies(ts->esd_timeout)));
517 mutex_unlock(&ts->mutex);
518}
519
520static int tsc2005_open(struct input_dev *input)
521{
522 struct tsc2005 *ts = input_get_drvdata(input);
523
524 mutex_lock(&ts->mutex);
525
526 if (!ts->suspended)
527 __tsc2005_enable(ts);
528
529 ts->opened = true;
530
531 mutex_unlock(&ts->mutex);
532
533 return 0;
534}
535
536static void tsc2005_close(struct input_dev *input)
537{
538 struct tsc2005 *ts = input_get_drvdata(input);
539
540 mutex_lock(&ts->mutex);
541
542 if (!ts->suspended)
543 __tsc2005_disable(ts);
544
545 ts->opened = false;
546
547 mutex_unlock(&ts->mutex);
548}
549
550static void __devinit tsc2005_setup_spi_xfer(struct tsc2005 *ts)
551{
552 tsc2005_setup_read(&ts->spi_x, TSC2005_REG_X, false);
553 tsc2005_setup_read(&ts->spi_y, TSC2005_REG_Y, false);
554 tsc2005_setup_read(&ts->spi_z1, TSC2005_REG_Z1, false);
555 tsc2005_setup_read(&ts->spi_z2, TSC2005_REG_Z2, true);
556
557 spi_message_init(&ts->spi_read_msg);
558 spi_message_add_tail(&ts->spi_x.spi_xfer, &ts->spi_read_msg);
559 spi_message_add_tail(&ts->spi_y.spi_xfer, &ts->spi_read_msg);
560 spi_message_add_tail(&ts->spi_z1.spi_xfer, &ts->spi_read_msg);
561 spi_message_add_tail(&ts->spi_z2.spi_xfer, &ts->spi_read_msg);
562}
563
564static int __devinit tsc2005_probe(struct spi_device *spi)
565{
566 const struct tsc2005_platform_data *pdata = spi->dev.platform_data;
567 struct tsc2005 *ts;
568 struct input_dev *input_dev;
569 unsigned int max_x, max_y, max_p;
570 unsigned int fudge_x, fudge_y, fudge_p;
571 int error;
572
573 if (!pdata) {
574 dev_dbg(&spi->dev, "no platform data\n");
575 return -ENODEV;
576 }
577
578 fudge_x = pdata->ts_x_fudge ? : 4;
579 fudge_y = pdata->ts_y_fudge ? : 8;
580 fudge_p = pdata->ts_pressure_fudge ? : 2;
581 max_x = pdata->ts_x_max ? : MAX_12BIT;
582 max_y = pdata->ts_y_max ? : MAX_12BIT;
583 max_p = pdata->ts_pressure_max ? : MAX_12BIT;
584
585 if (spi->irq <= 0) {
586 dev_dbg(&spi->dev, "no irq\n");
587 return -ENODEV;
588 }
589
590 spi->mode = SPI_MODE_0;
591 spi->bits_per_word = 8;
592 if (!spi->max_speed_hz)
593 spi->max_speed_hz = TSC2005_SPI_MAX_SPEED_HZ;
594
595 error = spi_setup(spi);
596 if (error)
597 return error;
598
599 ts = kzalloc(sizeof(*ts), GFP_KERNEL);
600 input_dev = input_allocate_device();
601 if (!ts || !input_dev) {
602 error = -ENOMEM;
603 goto err_free_mem;
604 }
605
606 ts->spi = spi;
607 ts->idev = input_dev;
608
609 ts->x_plate_ohm = pdata->ts_x_plate_ohm ? : 280;
610 ts->esd_timeout = pdata->esd_timeout_ms;
611 ts->set_reset = pdata->set_reset;
612
613 mutex_init(&ts->mutex);
614
615 spin_lock_init(&ts->lock);
616 setup_timer(&ts->penup_timer, tsc2005_penup_timer, (unsigned long)ts);
617
618 INIT_DELAYED_WORK(&ts->esd_work, tsc2005_esd_work);
619
620 tsc2005_setup_spi_xfer(ts);
621
622 snprintf(ts->phys, sizeof(ts->phys),
623 "%s/input-ts", dev_name(&spi->dev));
624
625 input_dev->name = "TSC2005 touchscreen";
626 input_dev->phys = ts->phys;
627 input_dev->id.bustype = BUS_SPI;
628 input_dev->dev.parent = &spi->dev;
629 input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
630 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
631
632 input_set_abs_params(input_dev, ABS_X, 0, max_x, fudge_x, 0);
633 input_set_abs_params(input_dev, ABS_Y, 0, max_y, fudge_y, 0);
634 input_set_abs_params(input_dev, ABS_PRESSURE, 0, max_p, fudge_p, 0);
635
636 input_dev->open = tsc2005_open;
637 input_dev->close = tsc2005_close;
638
639 input_set_drvdata(input_dev, ts);
640
641 /* Ensure the touchscreen is off */
642 tsc2005_stop_scan(ts);
643
644 error = request_threaded_irq(spi->irq, NULL, tsc2005_irq_thread,
645 IRQF_TRIGGER_RISING, "tsc2005", ts);
646 if (error) {
647 dev_err(&spi->dev, "Failed to request irq, err: %d\n", error);
648 goto err_free_mem;
649 }
650
651 spi_set_drvdata(spi, ts);
652 error = sysfs_create_group(&spi->dev.kobj, &tsc2005_attr_group);
653 if (error) {
654 dev_err(&spi->dev,
655 "Failed to create sysfs attributes, err: %d\n", error);
656 goto err_clear_drvdata;
657 }
658
659 error = input_register_device(ts->idev);
660 if (error) {
661 dev_err(&spi->dev,
662 "Failed to register input device, err: %d\n", error);
663 goto err_remove_sysfs;
664 }
665
666 set_irq_wake(spi->irq, 1);
667 return 0;
668
669err_remove_sysfs:
670 sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);
671err_clear_drvdata:
672 spi_set_drvdata(spi, NULL);
673 free_irq(spi->irq, ts);
674err_free_mem:
675 input_free_device(input_dev);
676 kfree(ts);
677 return error;
678}
679
680static int __devexit tsc2005_remove(struct spi_device *spi)
681{
682 struct tsc2005 *ts = spi_get_drvdata(spi);
683
684 sysfs_remove_group(&ts->spi->dev.kobj, &tsc2005_attr_group);
685
686 free_irq(ts->spi->irq, ts);
687 input_unregister_device(ts->idev);
688 kfree(ts);
689
690 spi_set_drvdata(spi, NULL);
691 return 0;
692}
693
694#ifdef CONFIG_PM_SLEEP
695static int tsc2005_suspend(struct device *dev)
696{
697 struct spi_device *spi = to_spi_device(dev);
698 struct tsc2005 *ts = spi_get_drvdata(spi);
699
700 mutex_lock(&ts->mutex);
701
702 if (!ts->suspended && ts->opened)
703 __tsc2005_disable(ts);
704
705 ts->suspended = true;
706
707 mutex_unlock(&ts->mutex);
708
709 return 0;
710}
711
712static int tsc2005_resume(struct device *dev)
713{
714 struct spi_device *spi = to_spi_device(dev);
715 struct tsc2005 *ts = spi_get_drvdata(spi);
716
717 mutex_lock(&ts->mutex);
718
719 if (ts->suspended && ts->opened)
720 __tsc2005_enable(ts);
721
722 ts->suspended = false;
723
724 mutex_unlock(&ts->mutex);
725
726 return 0;
727}
728#endif
729
730static SIMPLE_DEV_PM_OPS(tsc2005_pm_ops, tsc2005_suspend, tsc2005_resume);
731
732static struct spi_driver tsc2005_driver = {
733 .driver = {
734 .name = "tsc2005",
735 .owner = THIS_MODULE,
736 .pm = &tsc2005_pm_ops,
737 },
738 .probe = tsc2005_probe,
739 .remove = __devexit_p(tsc2005_remove),
740};
741
742static int __init tsc2005_init(void)
743{
744 return spi_register_driver(&tsc2005_driver);
745}
746module_init(tsc2005_init);
747
748static void __exit tsc2005_exit(void)
749{
750 spi_unregister_driver(&tsc2005_driver);
751}
752module_exit(tsc2005_exit);
753
754MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>");
755MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");
756MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/wm831x-ts.c b/drivers/input/touchscreen/wm831x-ts.c
new file mode 100644
index 00000000000..6ae054f8e0a
--- /dev/null
+++ b/drivers/input/touchscreen/wm831x-ts.c
@@ -0,0 +1,368 @@
1/*
2 * Touchscreen driver for WM831x PMICs
3 *
4 * Copyright 2011 Wolfson Microelectronics plc.
5 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 */
12
13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/string.h>
18#include <linux/pm.h>
19#include <linux/input.h>
20#include <linux/interrupt.h>
21#include <linux/io.h>
22#include <linux/mfd/wm831x/core.h>
23#include <linux/mfd/wm831x/irq.h>
24#include <linux/mfd/wm831x/pdata.h>
25#include <linux/platform_device.h>
26#include <linux/slab.h>
27#include <linux/types.h>
28
29/*
30 * R16424 (0x4028) - Touch Control 1
31 */
32#define WM831X_TCH_ENA 0x8000 /* TCH_ENA */
33#define WM831X_TCH_CVT_ENA 0x4000 /* TCH_CVT_ENA */
34#define WM831X_TCH_SLPENA 0x1000 /* TCH_SLPENA */
35#define WM831X_TCH_Z_ENA 0x0400 /* TCH_Z_ENA */
36#define WM831X_TCH_Y_ENA 0x0200 /* TCH_Y_ENA */
37#define WM831X_TCH_X_ENA 0x0100 /* TCH_X_ENA */
38#define WM831X_TCH_DELAY_MASK 0x00E0 /* TCH_DELAY - [7:5] */
39#define WM831X_TCH_DELAY_SHIFT 5 /* TCH_DELAY - [7:5] */
40#define WM831X_TCH_DELAY_WIDTH 3 /* TCH_DELAY - [7:5] */
41#define WM831X_TCH_RATE_MASK 0x001F /* TCH_RATE - [4:0] */
42#define WM831X_TCH_RATE_SHIFT 0 /* TCH_RATE - [4:0] */
43#define WM831X_TCH_RATE_WIDTH 5 /* TCH_RATE - [4:0] */
44
45/*
46 * R16425 (0x4029) - Touch Control 2
47 */
48#define WM831X_TCH_PD_WK 0x2000 /* TCH_PD_WK */
49#define WM831X_TCH_5WIRE 0x1000 /* TCH_5WIRE */
50#define WM831X_TCH_PDONLY 0x0800 /* TCH_PDONLY */
51#define WM831X_TCH_ISEL 0x0100 /* TCH_ISEL */
52#define WM831X_TCH_RPU_MASK 0x000F /* TCH_RPU - [3:0] */
53#define WM831X_TCH_RPU_SHIFT 0 /* TCH_RPU - [3:0] */
54#define WM831X_TCH_RPU_WIDTH 4 /* TCH_RPU - [3:0] */
55
56/*
57 * R16426-8 (0x402A-C) - Touch Data X/Y/X
58 */
59#define WM831X_TCH_PD 0x8000 /* TCH_PD1 */
60#define WM831X_TCH_DATA_MASK 0x0FFF /* TCH_DATA - [11:0] */
61#define WM831X_TCH_DATA_SHIFT 0 /* TCH_DATA - [11:0] */
62#define WM831X_TCH_DATA_WIDTH 12 /* TCH_DATA - [11:0] */
63
64struct wm831x_ts {
65 struct input_dev *input_dev;
66 struct wm831x *wm831x;
67 unsigned int data_irq;
68 unsigned int pd_irq;
69 bool pressure;
70 bool pen_down;
71};
72
73static irqreturn_t wm831x_ts_data_irq(int irq, void *irq_data)
74{
75 struct wm831x_ts *wm831x_ts = irq_data;
76 struct wm831x *wm831x = wm831x_ts->wm831x;
77 static int data_types[] = { ABS_X, ABS_Y, ABS_PRESSURE };
78 u16 data[3];
79 int count;
80 int i, ret;
81
82 if (wm831x_ts->pressure)
83 count = 3;
84 else
85 count = 2;
86
87 wm831x_set_bits(wm831x, WM831X_INTERRUPT_STATUS_1,
88 WM831X_TCHDATA_EINT, WM831X_TCHDATA_EINT);
89
90 ret = wm831x_bulk_read(wm831x, WM831X_TOUCH_DATA_X, count,
91 data);
92 if (ret != 0) {
93 dev_err(wm831x->dev, "Failed to read touch data: %d\n",
94 ret);
95 return IRQ_NONE;
96 }
97
98 /*
99 * We get a pen down reading on every reading, report pen up if any
100 * individual reading does so.
101 */
102 wm831x_ts->pen_down = true;
103 for (i = 0; i < count; i++) {
104 if (!(data[i] & WM831X_TCH_PD)) {
105 wm831x_ts->pen_down = false;
106 continue;
107 }
108 input_report_abs(wm831x_ts->input_dev, data_types[i],
109 data[i] & WM831X_TCH_DATA_MASK);
110 }
111
112 if (!wm831x_ts->pen_down) {
113 disable_irq_nosync(wm831x_ts->data_irq);
114
115 /* Don't need data any more */
116 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_1,
117 WM831X_TCH_X_ENA | WM831X_TCH_Y_ENA |
118 WM831X_TCH_Z_ENA, 0);
119
120 /* Flush any final samples that arrived while reading */
121 wm831x_set_bits(wm831x, WM831X_INTERRUPT_STATUS_1,
122 WM831X_TCHDATA_EINT, WM831X_TCHDATA_EINT);
123
124 wm831x_bulk_read(wm831x, WM831X_TOUCH_DATA_X, count, data);
125
126 if (wm831x_ts->pressure)
127 input_report_abs(wm831x_ts->input_dev,
128 ABS_PRESSURE, 0);
129
130 input_report_key(wm831x_ts->input_dev, BTN_TOUCH, 0);
131 }
132
133 input_sync(wm831x_ts->input_dev);
134
135 return IRQ_HANDLED;
136}
137
138static irqreturn_t wm831x_ts_pen_down_irq(int irq, void *irq_data)
139{
140 struct wm831x_ts *wm831x_ts = irq_data;
141 struct wm831x *wm831x = wm831x_ts->wm831x;
142 int ena = 0;
143
144 /* Start collecting data */
145 if (wm831x_ts->pressure)
146 ena |= WM831X_TCH_Z_ENA;
147
148 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_1,
149 WM831X_TCH_X_ENA | WM831X_TCH_Y_ENA | WM831X_TCH_Z_ENA,
150 WM831X_TCH_X_ENA | WM831X_TCH_Y_ENA | ena);
151
152 input_report_key(wm831x_ts->input_dev, BTN_TOUCH, 1);
153 input_sync(wm831x_ts->input_dev);
154
155 wm831x_set_bits(wm831x, WM831X_INTERRUPT_STATUS_1,
156 WM831X_TCHPD_EINT, WM831X_TCHPD_EINT);
157
158 wm831x_ts->pen_down = true;
159 enable_irq(wm831x_ts->data_irq);
160
161 return IRQ_HANDLED;
162}
163
164static int wm831x_ts_input_open(struct input_dev *idev)
165{
166 struct wm831x_ts *wm831x_ts = input_get_drvdata(idev);
167 struct wm831x *wm831x = wm831x_ts->wm831x;
168
169 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_1,
170 WM831X_TCH_ENA | WM831X_TCH_CVT_ENA |
171 WM831X_TCH_X_ENA | WM831X_TCH_Y_ENA |
172 WM831X_TCH_Z_ENA, WM831X_TCH_ENA);
173
174 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_1,
175 WM831X_TCH_CVT_ENA, WM831X_TCH_CVT_ENA);
176
177 return 0;
178}
179
180static void wm831x_ts_input_close(struct input_dev *idev)
181{
182 struct wm831x_ts *wm831x_ts = input_get_drvdata(idev);
183 struct wm831x *wm831x = wm831x_ts->wm831x;
184
185 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_1,
186 WM831X_TCH_ENA | WM831X_TCH_CVT_ENA |
187 WM831X_TCH_X_ENA | WM831X_TCH_Y_ENA |
188 WM831X_TCH_Z_ENA, 0);
189
190 if (wm831x_ts->pen_down)
191 disable_irq(wm831x_ts->data_irq);
192}
193
194static __devinit int wm831x_ts_probe(struct platform_device *pdev)
195{
196 struct wm831x_ts *wm831x_ts;
197 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
198 struct wm831x_pdata *core_pdata = dev_get_platdata(pdev->dev.parent);
199 struct wm831x_touch_pdata *pdata = NULL;
200 struct input_dev *input_dev;
201 int error;
202
203 if (core_pdata)
204 pdata = core_pdata->touch;
205
206 wm831x_ts = kzalloc(sizeof(struct wm831x_ts), GFP_KERNEL);
207 input_dev = input_allocate_device();
208 if (!wm831x_ts || !input_dev) {
209 error = -ENOMEM;
210 goto err_alloc;
211 }
212
213 wm831x_ts->wm831x = wm831x;
214 wm831x_ts->input_dev = input_dev;
215
216 /*
217 * If we have a direct IRQ use it, otherwise use the interrupt
218 * from the WM831x IRQ controller.
219 */
220 if (pdata && pdata->data_irq)
221 wm831x_ts->data_irq = pdata->data_irq;
222 else
223 wm831x_ts->data_irq = platform_get_irq_byname(pdev, "TCHDATA");
224
225 if (pdata && pdata->pd_irq)
226 wm831x_ts->pd_irq = pdata->pd_irq;
227 else
228 wm831x_ts->pd_irq = platform_get_irq_byname(pdev, "TCHPD");
229
230 if (pdata)
231 wm831x_ts->pressure = pdata->pressure;
232 else
233 wm831x_ts->pressure = true;
234
235 /* Five wire touchscreens can't report pressure */
236 if (pdata && pdata->fivewire) {
237 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_2,
238 WM831X_TCH_5WIRE, WM831X_TCH_5WIRE);
239
240 /* Pressure measurements are not possible for five wire mode */
241 WARN_ON(pdata->pressure && pdata->fivewire);
242 wm831x_ts->pressure = false;
243 } else {
244 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_2,
245 WM831X_TCH_5WIRE, 0);
246 }
247
248 if (pdata) {
249 switch (pdata->isel) {
250 default:
251 dev_err(&pdev->dev, "Unsupported ISEL setting: %d\n",
252 pdata->isel);
253 /* Fall through */
254 case 200:
255 case 0:
256 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_2,
257 WM831X_TCH_ISEL, 0);
258 break;
259 case 400:
260 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_2,
261 WM831X_TCH_ISEL, WM831X_TCH_ISEL);
262 break;
263 }
264 }
265
266 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_2,
267 WM831X_TCH_PDONLY, 0);
268
269 /* Default to 96 samples/sec */
270 wm831x_set_bits(wm831x, WM831X_TOUCH_CONTROL_1,
271 WM831X_TCH_RATE_MASK, 6);
272
273 error = request_threaded_irq(wm831x_ts->data_irq,
274 NULL, wm831x_ts_data_irq,
275 IRQF_ONESHOT,
276 "Touchscreen data", wm831x_ts);
277 if (error) {
278 dev_err(&pdev->dev, "Failed to request data IRQ %d: %d\n",
279 wm831x_ts->data_irq, error);
280 goto err_alloc;
281 }
282 disable_irq(wm831x_ts->data_irq);
283
284 error = request_threaded_irq(wm831x_ts->pd_irq,
285 NULL, wm831x_ts_pen_down_irq,
286 IRQF_ONESHOT,
287 "Touchscreen pen down", wm831x_ts);
288 if (error) {
289 dev_err(&pdev->dev, "Failed to request pen down IRQ %d: %d\n",
290 wm831x_ts->pd_irq, error);
291 goto err_data_irq;
292 }
293
294 /* set up touch configuration */
295 input_dev->name = "WM831x touchscreen";
296 input_dev->phys = "wm831x";
297 input_dev->open = wm831x_ts_input_open;
298 input_dev->close = wm831x_ts_input_close;
299
300 __set_bit(EV_ABS, input_dev->evbit);
301 __set_bit(EV_KEY, input_dev->evbit);
302 __set_bit(BTN_TOUCH, input_dev->keybit);
303
304 input_set_abs_params(input_dev, ABS_X, 0, 4095, 5, 0);
305 input_set_abs_params(input_dev, ABS_Y, 0, 4095, 5, 0);
306 if (wm831x_ts->pressure)
307 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 4095, 5, 0);
308
309 input_set_drvdata(input_dev, wm831x_ts);
310 input_dev->dev.parent = &pdev->dev;
311
312 error = input_register_device(input_dev);
313 if (error)
314 goto err_pd_irq;
315
316 platform_set_drvdata(pdev, wm831x_ts);
317 return 0;
318
319err_pd_irq:
320 free_irq(wm831x_ts->pd_irq, wm831x_ts);
321err_data_irq:
322 free_irq(wm831x_ts->data_irq, wm831x_ts);
323err_alloc:
324 input_free_device(input_dev);
325 kfree(wm831x_ts);
326
327 return error;
328}
329
330static __devexit int wm831x_ts_remove(struct platform_device *pdev)
331{
332 struct wm831x_ts *wm831x_ts = platform_get_drvdata(pdev);
333
334 free_irq(wm831x_ts->pd_irq, wm831x_ts);
335 free_irq(wm831x_ts->data_irq, wm831x_ts);
336 input_unregister_device(wm831x_ts->input_dev);
337 kfree(wm831x_ts);
338
339 platform_set_drvdata(pdev, NULL);
340 return 0;
341}
342
343static struct platform_driver wm831x_ts_driver = {
344 .driver = {
345 .name = "wm831x-touch",
346 .owner = THIS_MODULE,
347 },
348 .probe = wm831x_ts_probe,
349 .remove = __devexit_p(wm831x_ts_remove),
350};
351
352static int __init wm831x_ts_init(void)
353{
354 return platform_driver_register(&wm831x_ts_driver);
355}
356module_init(wm831x_ts_init);
357
358static void __exit wm831x_ts_exit(void)
359{
360 platform_driver_unregister(&wm831x_ts_driver);
361}
362module_exit(wm831x_ts_exit);
363
364/* Module information */
365MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
366MODULE_DESCRIPTION("WM831x PMIC touchscreen driver");
367MODULE_LICENSE("GPL");
368MODULE_ALIAS("platform:wm831x-touch");
generated by cgit v1.2.2 (git 2.25.0) at 2026-03-23 07:55:26 -0400