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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 14:50:24 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 14:50:24 -0500
commitd68798374bcf5cd4a19105b86d96121651b3c8cb (patch)
tree5e7432adf2b61f1497a4c3138c969e8664c54b6e
parent412ecd7751a2653ab17df39a1dc3565a548633fd (diff)
parent2a598df595d33be0f12e37ef5df75eff13511d07 (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: Input: remove scan_keyb driver Input: i8042 - fix AUX IRQ delivery check Input: wistron - add support for Fujitsu-Siemens Amilo D88x0 Input: inport - use correct config option for ATIXL Input: HIL - handle erros from input_register_device() Input: tsdev - schedule removal Input: add Atlas button driver Input: ads7846 - be more compatible with the hwmon framework Input: ads7846 - detect pen up from GPIO state Input: ads7846 - select correct SPI mode Input: ads7846 - switch to using hrtimer Input: ads7846 - optionally leave Vref on during differential measurements Input: ads7846 - pluggable filtering logic Input: gpio-keys - keyboard driver for GPIO buttons Input: hid-ff - add support for Logitech Momo racing wheel Input: i8042 - really suppress ACK/NAK during panic blink Input: pc110pad - return proper error
Diffstat
-rw-r--r--Documentation/feature-removal-schedule.txt15
-rw-r--r--drivers/char/scan_keyb.c149
-rw-r--r--drivers/char/scan_keyb.h15
-rw-r--r--drivers/input/keyboard/Kconfig19
-rw-r--r--drivers/input/keyboard/Makefile5
-rw-r--r--drivers/input/keyboard/gpio_keys.c147
-rw-r--r--drivers/input/keyboard/hilkbd.c114
-rw-r--r--drivers/input/misc/Kconfig10
-rw-r--r--drivers/input/misc/Makefile1
-rw-r--r--drivers/input/misc/atlas_btns.c170
-rw-r--r--drivers/input/misc/wistron_btns.c20
-rw-r--r--drivers/input/mouse/inport.c2
-rw-r--r--drivers/input/mouse/pc110pad.c2
-rw-r--r--drivers/input/serio/i8042.c12
-rw-r--r--drivers/input/touchscreen/Kconfig9
-rw-r--r--drivers/input/touchscreen/ads7846.c581
-rw-r--r--drivers/input/tsdev.c4
-rw-r--r--drivers/usb/input/hid-ff.c1
-rw-r--r--drivers/usb/input/hid-lgff.c1
-rw-r--r--include/asm-arm/hardware/gpio_keys.h17
-rw-r--r--include/linux/spi/ads7846.h12
21 files changed, 889 insertions, 417 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 8247a4b79d09..c585aa8d62b4 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -319,3 +319,18 @@ Why: In kernel tree version of driver is unmaintained. Sk98lin driver
319 replaced by the skge driver. 319 replaced by the skge driver.
320Who: Stephen Hemminger <shemminger@osdl.org> 320Who: Stephen Hemminger <shemminger@osdl.org>
321 321
322---------------------------
323
324What: Compaq touchscreen device emulation
325When: Oct 2007
326Files: drivers/input/tsdev.c
327Why: The code says it was obsolete when it was written in 2001.
328 tslib is a userspace library which does anything tsdev can do and
329 much more besides in userspace where this code belongs. There is no
330 longer any need for tsdev and applications should have converted to
331 use tslib by now.
332 The name "tsdev" is also extremely confusing and lots of people have
333 it loaded when they don't need/use it.
334Who: Richard Purdie <rpurdie@rpsys.net>
335
336---------------------------
diff --git a/drivers/char/scan_keyb.c b/drivers/char/scan_keyb.c
deleted file mode 100644
index 2b5bb4f5754d..000000000000
--- a/drivers/char/scan_keyb.c
+++ /dev/null
@@ -1,149 +0,0 @@
1/*
2 * $Id: scan_keyb.c,v 1.2 2000/07/04 06:24:42 yaegashi Exp $
3 * Copyright (C) 2000 YAEGASHI Takeshi
4 * Generic scan keyboard driver
5 */
6
7#include <linux/spinlock.h>
8#include <linux/sched.h>
9#include <linux/interrupt.h>
10#include <linux/tty.h>
11#include <linux/mm.h>
12#include <linux/signal.h>
13#include <linux/init.h>
14#include <linux/kbd_ll.h>
15#include <linux/delay.h>
16#include <linux/random.h>
17#include <linux/poll.h>
18#include <linux/miscdevice.h>
19#include <linux/slab.h>
20#include <linux/kbd_kern.h>
21#include <linux/timer.h>
22
23#define SCANHZ (HZ/20)
24
25struct scan_keyboard {
26 struct scan_keyboard *next;
27 int (*scan)(unsigned char *buffer);
28 const unsigned char *table;
29 unsigned char *s0, *s1;
30 int length;
31};
32
33static int scan_jiffies=0;
34static struct scan_keyboard *keyboards=NULL;
35struct timer_list scan_timer;
36
37static void check_kbd(const unsigned char *table,
38 unsigned char *new, unsigned char *old, int length)
39{
40 int need_tasklet_schedule=0;
41 unsigned int xor, bit;
42
43 while(length-->0) {
44 if((xor=*new^*old)==0) {
45 table+=8;
46 }
47 else {
48 for(bit=0x01; bit<0x100; bit<<=1) {
49 if(xor&bit) {
50 handle_scancode(*table, !(*new&bit));
51 need_tasklet_schedule=1;
52#if 0
53 printk("0x%x %s\n", *table, (*new&bit)?"released":"pressed");
54#endif
55 }
56 table++;
57 }
58 }
59 new++; old++;
60 }
61
62 if(need_tasklet_schedule)
63 tasklet_schedule(&keyboard_tasklet);
64}
65
66
67static void scan_kbd(unsigned long dummy)
68{
69 struct scan_keyboard *kbd;
70
71 scan_jiffies++;
72
73 for(kbd=keyboards; kbd!=NULL; kbd=kbd->next) {
74 if(scan_jiffies&1) {
75 if(!kbd->scan(kbd->s0))
76 check_kbd(kbd->table,
77 kbd->s0, kbd->s1, kbd->length);
78 else
79 memcpy(kbd->s0, kbd->s1, kbd->length);
80 }
81 else {
82 if(!kbd->scan(kbd->s1))
83 check_kbd(kbd->table,
84 kbd->s1, kbd->s0, kbd->length);
85 else
86 memcpy(kbd->s1, kbd->s0, kbd->length);
87 }
88
89 }
90
91 init_timer(&scan_timer);
92 scan_timer.expires = jiffies + SCANHZ;
93 scan_timer.data = 0;
94 scan_timer.function = scan_kbd;
95 add_timer(&scan_timer);
96}
97
98
99int register_scan_keyboard(int (*scan)(unsigned char *buffer),
100 const unsigned char *table,
101 int length)
102{
103 struct scan_keyboard *kbd;
104
105 kbd = kmalloc(sizeof(struct scan_keyboard), GFP_KERNEL);
106 if (kbd == NULL)
107 goto error_out;
108
109 kbd->scan=scan;
110 kbd->table=table;
111 kbd->length=length;
112
113 kbd->s0 = kmalloc(length, GFP_KERNEL);
114 if (kbd->s0 == NULL)
115 goto error_free_kbd;
116
117 kbd->s1 = kmalloc(length, GFP_KERNEL);
118 if (kbd->s1 == NULL)
119 goto error_free_s0;
120
121 memset(kbd->s0, -1, kbd->length);
122 memset(kbd->s1, -1, kbd->length);
123
124 kbd->next=keyboards;
125 keyboards=kbd;
126
127 return 0;
128
129 error_free_s0:
130 kfree(kbd->s0);
131
132 error_free_kbd:
133 kfree(kbd);
134
135 error_out:
136 return -ENOMEM;
137}
138
139
140void __init scan_kbd_init(void)
141{
142 init_timer(&scan_timer);
143 scan_timer.expires = jiffies + SCANHZ;
144 scan_timer.data = 0;
145 scan_timer.function = scan_kbd;
146 add_timer(&scan_timer);
147
148 printk(KERN_INFO "Generic scan keyboard driver initialized\n");
149}
diff --git a/drivers/char/scan_keyb.h b/drivers/char/scan_keyb.h
deleted file mode 100644
index b4b611290a00..000000000000
--- a/drivers/char/scan_keyb.h
+++ /dev/null
@@ -1,15 +0,0 @@
1#ifndef __DRIVER_CHAR_SCAN_KEYB_H
2#define __DRIVER_CHAR_SCAN_KEYB_H
3/*
4 * $Id: scan_keyb.h,v 1.1 2000/06/10 21:45:30 yaegashi Exp $
5 * Copyright (C) 2000 YAEGASHI Takeshi
6 * Generic scan keyboard driver
7 */
8
9int register_scan_keyboard(int (*scan)(unsigned char *buffer),
10 const unsigned char *table,
11 int length);
12
13void __init scan_kbd_init(void);
14
15#endif
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 049f2f544e75..1b81a72e19d9 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -135,12 +135,12 @@ config KEYBOARD_STOWAWAY
135config KEYBOARD_CORGI 135config KEYBOARD_CORGI
136 tristate "Corgi keyboard" 136 tristate "Corgi keyboard"
137 depends on PXA_SHARPSL 137 depends on PXA_SHARPSL
138 default y 138 default y
139 help 139 help
140 Say Y here to enable the keyboard on the Sharp Zaurus SL-C7xx 140 Say Y here to enable the keyboard on the Sharp Zaurus SL-C7xx
141 series of PDAs. 141 series of PDAs.
142 142
143 To compile this driver as a module, choose M here: the 143 To compile this driver as a module, choose M here: the
144 module will be called corgikbd. 144 module will be called corgikbd.
145 145
146config KEYBOARD_SPITZ 146config KEYBOARD_SPITZ
@@ -214,4 +214,17 @@ config KEYBOARD_AAED2000
214 To compile this driver as a module, choose M here: the 214 To compile this driver as a module, choose M here: the
215 module will be called aaed2000_kbd. 215 module will be called aaed2000_kbd.
216 216
217config KEYBOARD_GPIO
218 tristate "Buttons on CPU GPIOs (PXA)"
219 depends on ARCH_PXA
220 help
221 This driver implements support for buttons connected
222 directly to GPIO pins of PXA CPUs.
223
224 Say Y here if your device has buttons connected
225 directly to GPIO pins of the CPU.
226
227 To compile this driver as a module, choose M here: the
228 module will be called gpio-keys.
229
217endif 230endif
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 568797907347..586a0fe53be6 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_KEYBOARD_CORGI) += corgikbd.o
16obj-$(CONFIG_KEYBOARD_SPITZ) += spitzkbd.o 16obj-$(CONFIG_KEYBOARD_SPITZ) += spitzkbd.o
17obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o 17obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o
18obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o 18obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o
19obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o 19obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o
20obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o 20obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o
21obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o
21 22
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
new file mode 100644
index 000000000000..3a8f1b427a7f
--- /dev/null
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -0,0 +1,147 @@
1/*
2 * Driver for keys on GPIO lines capable of generating interrupts.
3 *
4 * Copyright 2005 Phil Blundell
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/module.h>
12#include <linux/version.h>
13
14#include <linux/init.h>
15#include <linux/fs.h>
16#include <linux/interrupt.h>
17#include <linux/irq.h>
18#include <linux/sched.h>
19#include <linux/pm.h>
20#include <linux/sysctl.h>
21#include <linux/proc_fs.h>
22#include <linux/delay.h>
23#include <linux/platform_device.h>
24#include <linux/input.h>
25#include <linux/irq.h>
26
27#include <asm/arch/pxa-regs.h>
28#include <asm/arch/hardware.h>
29
30#include <asm/hardware/gpio_keys.h>
31
32static irqreturn_t gpio_keys_isr(int irq, void *dev_id)
33{
34 int i;
35 struct platform_device *pdev = dev_id;
36 struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
37 struct input_dev *input = platform_get_drvdata(pdev);
38
39 for (i = 0; i < pdata->nbuttons; i++) {
40 int gpio = pdata->buttons[i].gpio;
41 if (irq == IRQ_GPIO(gpio)) {
42 int state = ((GPLR(gpio) & GPIO_bit(gpio)) ? 1 : 0) ^ (pdata->buttons[i].active_low);
43
44 input_report_key(input, pdata->buttons[i].keycode, state);
45 input_sync(input);
46 }
47 }
48
49 return IRQ_HANDLED;
50}
51
52static int __devinit gpio_keys_probe(struct platform_device *pdev)
53{
54 struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
55 struct input_dev *input;
56 int i, error;
57
58 input = input_allocate_device();
59 if (!input)
60 return -ENOMEM;
61
62 platform_set_drvdata(pdev, input);
63
64 input->evbit[0] = BIT(EV_KEY);
65
66 input->name = pdev->name;
67 input->phys = "gpio-keys/input0";
68 input->cdev.dev = &pdev->dev;
69 input->private = pdata;
70
71 input->id.bustype = BUS_HOST;
72 input->id.vendor = 0x0001;
73 input->id.product = 0x0001;
74 input->id.version = 0x0100;
75
76 for (i = 0; i < pdata->nbuttons; i++) {
77 int code = pdata->buttons[i].keycode;
78 int irq = IRQ_GPIO(pdata->buttons[i].gpio);
79
80 set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
81 error = request_irq(irq, gpio_keys_isr, SA_SAMPLE_RANDOM,
82 pdata->buttons[i].desc ? pdata->buttons[i].desc : "gpio_keys",
83 pdev);
84 if (error) {
85 printk(KERN_ERR "gpio-keys: unable to claim irq %d; error %d\n", irq, ret);
86 goto fail;
87 }
88 set_bit(code, input->keybit);
89 }
90
91 error = input_register_device(input);
92 if (error) {
93 printk(KERN_ERR "Unable to register gpio-keys input device\n");
94 goto fail;
95 }
96
97 return 0;
98
99 fail:
100 for (i = i - 1; i >= 0; i--)
101 free_irq(IRQ_GPIO(pdata->buttons[i].gpio), pdev);
102
103 input_free_device(input);
104
105 return error;
106}
107
108static int __devexit gpio_keys_remove(struct platform_device *pdev)
109{
110 struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
111 struct input_dev *input = platform_get_drvdata(pdev);
112 int i;
113
114 for (i = 0; i < pdata->nbuttons; i++) {
115 int irq = IRQ_GPIO(pdata->buttons[i].gpio);
116 free_irq(irq, pdev);
117 }
118
119 input_unregister_device(input);
120
121 return 0;
122}
123
124struct platform_driver gpio_keys_device_driver = {
125 .probe = gpio_keys_probe,
126 .remove = __devexit_p(gpio_keys_remove),
127 .driver = {
128 .name = "gpio-keys",
129 }
130};
131
132static int __init gpio_keys_init(void)
133{
134 return platform_driver_register(&gpio_keys_device_driver);
135}
136
137static void __exit gpio_keys_exit(void)
138{
139 platform_driver_unregister(&gpio_keys_device_driver);
140}
141
142module_init(gpio_keys_init);
143module_exit(gpio_keys_exit);
144
145MODULE_LICENSE("GPL");
146MODULE_AUTHOR("Phil Blundell <pb@handhelds.org>");
147MODULE_DESCRIPTION("Keyboard driver for CPU GPIOs");
diff --git a/drivers/input/keyboard/hilkbd.c b/drivers/input/keyboard/hilkbd.c
index 35461eab2faf..255a6ec75a48 100644
--- a/drivers/input/keyboard/hilkbd.c
+++ b/drivers/input/keyboard/hilkbd.c
@@ -6,10 +6,10 @@
6 * Copyright (C) 1999-2006 Helge Deller <deller@gmx.de> 6 * Copyright (C) 1999-2006 Helge Deller <deller@gmx.de>
7 * 7 *
8 * Very basic HP Human Interface Loop (HIL) driver. 8 * Very basic HP Human Interface Loop (HIL) driver.
9 * This driver handles the keyboard on HP300 (m68k) and on some 9 * This driver handles the keyboard on HP300 (m68k) and on some
10 * HP700 (parisc) series machines. 10 * HP700 (parisc) series machines.
11 * 11 *
12 * 12 *
13 * This file is subject to the terms and conditions of the GNU General Public 13 * This file is subject to the terms and conditions of the GNU General Public
14 * License version 2. See the file COPYING in the main directory of this 14 * License version 2. See the file COPYING in the main directory of this
15 * archive for more details. 15 * archive for more details.
@@ -64,9 +64,9 @@ MODULE_LICENSE("GPL v2");
64#endif 64#endif
65 65
66 66
67 67
68/* HIL helper functions */ 68/* HIL helper functions */
69 69
70#define hil_busy() (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY) 70#define hil_busy() (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY)
71#define hil_data_available() (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY) 71#define hil_data_available() (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY)
72#define hil_status() (hil_readb(HILBASE + HIL_CMD)) 72#define hil_status() (hil_readb(HILBASE + HIL_CMD))
@@ -75,7 +75,7 @@ MODULE_LICENSE("GPL v2");
75#define hil_write_data(x) do { hil_writeb((x), HILBASE + HIL_DATA); } while (0) 75#define hil_write_data(x) do { hil_writeb((x), HILBASE + HIL_DATA); } while (0)
76 76
77/* HIL constants */ 77/* HIL constants */
78 78
79#define HIL_BUSY 0x02 79#define HIL_BUSY 0x02
80#define HIL_DATA_RDY 0x01 80#define HIL_DATA_RDY 0x01
81 81
@@ -86,10 +86,10 @@ MODULE_LICENSE("GPL v2");
86#define HIL_INTON 0x5C /* Turn on interrupts. */ 86#define HIL_INTON 0x5C /* Turn on interrupts. */
87#define HIL_INTOFF 0x5D /* Turn off interrupts. */ 87#define HIL_INTOFF 0x5D /* Turn off interrupts. */
88 88
89#define HIL_READKBDSADR 0xF9 89#define HIL_READKBDSADR 0xF9
90#define HIL_WRITEKBDSADR 0xE9 90#define HIL_WRITEKBDSADR 0xE9
91 91
92static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] = 92static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] =
93 { HIL_KEYCODES_SET1 }; 93 { HIL_KEYCODES_SET1 };
94 94
95/* HIL structure */ 95/* HIL structure */
@@ -97,11 +97,11 @@ static struct {
97 struct input_dev *dev; 97 struct input_dev *dev;
98 98
99 unsigned int curdev; 99 unsigned int curdev;
100 100
101 unsigned char s; 101 unsigned char s;
102 unsigned char c; 102 unsigned char c;
103 int valid; 103 int valid;
104 104
105 unsigned char data[16]; 105 unsigned char data[16];
106 unsigned int ptr; 106 unsigned int ptr;
107 spinlock_t lock; 107 spinlock_t lock;
@@ -115,7 +115,7 @@ static void poll_finished(void)
115 int down; 115 int down;
116 int key; 116 int key;
117 unsigned char scode; 117 unsigned char scode;
118 118
119 switch (hil_dev.data[0]) { 119 switch (hil_dev.data[0]) {
120 case 0x40: 120 case 0x40:
121 down = (hil_dev.data[1] & 1) == 0; 121 down = (hil_dev.data[1] & 1) == 0;
@@ -127,6 +127,7 @@ static void poll_finished(void)
127 hil_dev.curdev = 0; 127 hil_dev.curdev = 0;
128} 128}
129 129
130
130static inline void handle_status(unsigned char s, unsigned char c) 131static inline void handle_status(unsigned char s, unsigned char c)
131{ 132{
132 if (c & 0x8) { 133 if (c & 0x8) {
@@ -143,6 +144,7 @@ static inline void handle_status(unsigned char s, unsigned char c)
143 } 144 }
144} 145}
145 146
147
146static inline void handle_data(unsigned char s, unsigned char c) 148static inline void handle_data(unsigned char s, unsigned char c)
147{ 149{
148 if (hil_dev.curdev) { 150 if (hil_dev.curdev) {
@@ -152,13 +154,11 @@ static inline void handle_data(unsigned char s, unsigned char c)
152} 154}
153 155
154 156
155/* 157/* handle HIL interrupts */
156 * Handle HIL interrupts.
157 */
158static irqreturn_t hil_interrupt(int irq, void *handle) 158static irqreturn_t hil_interrupt(int irq, void *handle)
159{ 159{
160 unsigned char s, c; 160 unsigned char s, c;
161 161
162 s = hil_status(); 162 s = hil_status();
163 c = hil_read_data(); 163 c = hil_read_data();
164 164
@@ -179,10 +179,8 @@ static irqreturn_t hil_interrupt(int irq, void *handle)
179 return IRQ_HANDLED; 179 return IRQ_HANDLED;
180} 180}
181 181
182/*
183 * Send a command to the HIL
184 */
185 182
183/* send a command to the HIL */
186static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len) 184static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
187{ 185{
188 unsigned long flags; 186 unsigned long flags;
@@ -200,16 +198,14 @@ static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
200} 198}
201 199
202 200
203/* 201/* initialise HIL */
204 * Initialise HIL.
205 */
206
207static int __init 202static int __init
208hil_keyb_init(void) 203hil_keyb_init(void)
209{ 204{
210 unsigned char c; 205 unsigned char c;
211 unsigned int i, kbid; 206 unsigned int i, kbid;
212 wait_queue_head_t hil_wait; 207 wait_queue_head_t hil_wait;
208 int err;
213 209
214 if (hil_dev.dev) { 210 if (hil_dev.dev) {
215 return -ENODEV; /* already initialized */ 211 return -ENODEV; /* already initialized */
@@ -219,15 +215,25 @@ hil_keyb_init(void)
219 if (!hil_dev.dev) 215 if (!hil_dev.dev)
220 return -ENOMEM; 216 return -ENOMEM;
221 hil_dev.dev->private = &hil_dev; 217 hil_dev.dev->private = &hil_dev;
222 218
223#if defined(CONFIG_HP300) 219#if defined(CONFIG_HP300)
224 if (!hwreg_present((void *)(HILBASE + HIL_DATA))) 220 if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
225 return -ENODEV; 221 printk(KERN_ERR "HIL: hardware register was not found\n");
226 222 err = -ENODEV;
227 request_region(HILBASE+HIL_DATA, 2, "hil"); 223 goto err1;
224 }
225 if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
226 printk(KERN_ERR "HIL: IOPORT region already used\n");
227 err = -EIO;
228 goto err1;
229 }
228#endif 230#endif
229 231
230 request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id); 232 err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
233 if (err) {
234 printk(KERN_ERR "HIL: Can't get IRQ\n");
235 goto err2;
236 }
231 237
232 /* Turn on interrupts */ 238 /* Turn on interrupts */
233 hil_do(HIL_INTON, NULL, 0); 239 hil_do(HIL_INTON, NULL, 0);
@@ -239,47 +245,63 @@ hil_keyb_init(void)
239 init_waitqueue_head(&hil_wait); 245 init_waitqueue_head(&hil_wait);
240 wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3*HZ); 246 wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3*HZ);
241 if (!hil_dev.valid) { 247 if (!hil_dev.valid) {
242 printk(KERN_WARNING "HIL: timed out, assuming no keyboard present.\n"); 248 printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n");
243 } 249 }
244 250
245 c = hil_dev.c; 251 c = hil_dev.c;
246 hil_dev.valid = 0; 252 hil_dev.valid = 0;
247 if (c == 0) { 253 if (c == 0) {
248 kbid = -1; 254 kbid = -1;
249 printk(KERN_WARNING "HIL: no keyboard present.\n"); 255 printk(KERN_WARNING "HIL: no keyboard present\n");
250 } else { 256 } else {
251 kbid = ffz(~c); 257 kbid = ffz(~c);
252 /* printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid); */ 258 printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid);
253 } 259 }
254 260
255 /* set it to raw mode */ 261 /* set it to raw mode */
256 c = 0; 262 c = 0;
257 hil_do(HIL_WRITEKBDSADR, &c, 1); 263 hil_do(HIL_WRITEKBDSADR, &c, 1);
258 264
259 for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++) 265 for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++)
260 if (hphilkeyb_keycode[i] != KEY_RESERVED) 266 if (hphilkeyb_keycode[i] != KEY_RESERVED)
261 set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit); 267 set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);
262 268
263 hil_dev.dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 269 hil_dev.dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
264 hil_dev.dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL); 270 hil_dev.dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
265 hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE; 271 hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
266 hil_dev.dev->keycodesize = sizeof(hphilkeyb_keycode[0]); 272 hil_dev.dev->keycodesize= sizeof(hphilkeyb_keycode[0]);
267 hil_dev.dev->keycode = hphilkeyb_keycode; 273 hil_dev.dev->keycode = hphilkeyb_keycode;
268 hil_dev.dev->name = "HIL keyboard"; 274 hil_dev.dev->name = "HIL keyboard";
269 hil_dev.dev->phys = "hpkbd/input0"; 275 hil_dev.dev->phys = "hpkbd/input0";
270 276
271 hil_dev.dev->id.bustype = BUS_HIL; 277 hil_dev.dev->id.bustype = BUS_HIL;
272 hil_dev.dev->id.vendor = PCI_VENDOR_ID_HP; 278 hil_dev.dev->id.vendor = PCI_VENDOR_ID_HP;
273 hil_dev.dev->id.product = 0x0001; 279 hil_dev.dev->id.product = 0x0001;
274 hil_dev.dev->id.version = 0x0010; 280 hil_dev.dev->id.version = 0x0010;
275 281
276 input_register_device(hil_dev.dev); 282 err = input_register_device(hil_dev.dev);
283 if (err) {
284 printk(KERN_ERR "HIL: Can't register device\n");
285 goto err3;
286 }
277 printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n", 287 printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n",
278 hil_dev.dev->name, kbid, HILBASE, HIL_IRQ); 288 hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
279 289
280 return 0; 290 return 0;
291
292err3:
293 hil_do(HIL_INTOFF, NULL, 0);
294 disable_irq(HIL_IRQ);
295 free_irq(HIL_IRQ, hil_dev.dev_id);
296err2:
297 release_region(HILBASE + HIL_DATA, 2);
298err1:
299 input_free_device(hil_dev.dev);
300 hil_dev.dev = NULL;
301 return err;
281} 302}
282 303
304
283#if defined(CONFIG_PARISC) 305#if defined(CONFIG_PARISC)
284static int __init 306static int __init
285hil_init_chip(struct parisc_device *dev) 307hil_init_chip(struct parisc_device *dev)
@@ -292,7 +314,7 @@ hil_init_chip(struct parisc_device *dev)
292 hil_base = dev->hpa.start; 314 hil_base = dev->hpa.start;
293 hil_irq = dev->irq; 315 hil_irq = dev->irq;
294 hil_dev.dev_id = dev; 316 hil_dev.dev_id = dev;
295 317
296 printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq); 318 printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq);
297 319
298 return hil_keyb_init(); 320 return hil_keyb_init();
@@ -313,9 +335,6 @@ static struct parisc_driver hil_driver = {
313#endif /* CONFIG_PARISC */ 335#endif /* CONFIG_PARISC */
314 336
315 337
316
317
318
319static int __init hil_init(void) 338static int __init hil_init(void)
320{ 339{
321#if defined(CONFIG_PARISC) 340#if defined(CONFIG_PARISC)
@@ -349,4 +368,3 @@ static void __exit hil_exit(void)
349 368
350module_init(hil_init); 369module_init(hil_init);
351module_exit(hil_exit); 370module_exit(hil_exit);
352
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index ba0e88c64e1e..41b42587f5e9 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -50,6 +50,16 @@ config INPUT_WISTRON_BTNS
50 To compile this driver as a module, choose M here: the module will 50 To compile this driver as a module, choose M here: the module will
51 be called wistron_btns. 51 be called wistron_btns.
52 52
53config INPUT_ATLAS_BTNS
54 tristate "x86 Atlas button interface"
55 depends on X86 && ACPI
56 help
57 Say Y here for support of Atlas wallmount touchscreen buttons.
58 The events will show up as scancodes F1 through F9 via evdev.
59
60 To compile this driver as a module, choose M here: the module will
61 be called atlas_btns.
62
53config INPUT_IXP4XX_BEEPER 63config INPUT_IXP4XX_BEEPER
54 tristate "IXP4XX Beeper support" 64 tristate "IXP4XX Beeper support"
55 depends on ARCH_IXP4XX 65 depends on ARCH_IXP4XX
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 415c49178985..e0a8d58c9e9b 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -9,5 +9,6 @@ obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o
9obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o 9obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o
10obj-$(CONFIG_INPUT_UINPUT) += uinput.o 10obj-$(CONFIG_INPUT_UINPUT) += uinput.o
11obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o 11obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o
12obj-$(CONFIG_INPUT_ATLAS_BTNS) += atlas_btns.o
12obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o 13obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
13obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o 14obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o
diff --git a/drivers/input/misc/atlas_btns.c b/drivers/input/misc/atlas_btns.c
new file mode 100644
index 000000000000..0acc3a123604
--- /dev/null
+++ b/drivers/input/misc/atlas_btns.c
@@ -0,0 +1,170 @@
1/*
2 * atlas_btns.c - Atlas Wallmount Touchscreen ACPI Extras
3 *
4 * Copyright (C) 2006 Jaya Kumar
5 * Based on Toshiba ACPI by John Belmonte and ASUS ACPI
6 * This work was sponsored by CIS(M) Sdn Bhd.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/input.h>
28#include <linux/types.h>
29#include <asm/uaccess.h>
30#include <acpi/acpi_drivers.h>
31
32#define ACPI_ATLAS_NAME "Atlas ACPI"
33#define ACPI_ATLAS_CLASS "Atlas"
34#define ACPI_ATLAS_BUTTON_HID "ASIM0000"
35
36static struct input_dev *input_dev;
37
38/* button handling code */
39static acpi_status acpi_atlas_button_setup(acpi_handle region_handle,
40 u32 function, void *handler_context, void **return_context)
41{
42 *return_context =
43 (function != ACPI_REGION_DEACTIVATE) ? handler_context : NULL;
44
45 return AE_OK;
46}
47
48static acpi_status acpi_atlas_button_handler(u32 function,
49 acpi_physical_address address,
50 u32 bit_width, acpi_integer *value,
51 void *handler_context, void *region_context)
52{
53 acpi_status status;
54 int keycode;
55
56 if (function == ACPI_WRITE) {
57 keycode = KEY_F1 + (address & 0x0F);
58 input_report_key(input_dev, keycode, !(address & 0x10));
59 input_sync(input_dev);
60 status = 0;
61 } else {
62 printk(KERN_WARNING "atlas: shrugged on unexpected function"
63 ":function=%x,address=%lx,value=%x\n",
64 function, (unsigned long)address, (u32)*value);
65 status = -EINVAL;
66 }
67
68 return status;
69}
70
71static int atlas_acpi_button_add(struct acpi_device *device)
72{
73 acpi_status status;
74 int err;
75
76 input_dev = input_allocate_device();
77 if (!input_dev) {
78 printk(KERN_ERR "atlas: unable to allocate input device\n");
79 return -ENOMEM;
80 }
81
82 input_dev->name = "Atlas ACPI button driver";
83 input_dev->phys = "ASIM0000/atlas/input0";
84 input_dev->id.bustype = BUS_HOST;
85 input_dev->evbit[LONG(EV_KEY)] = BIT(EV_KEY);
86
87 set_bit(KEY_F1, input_dev->keybit);
88 set_bit(KEY_F2, input_dev->keybit);
89 set_bit(KEY_F3, input_dev->keybit);
90 set_bit(KEY_F4, input_dev->keybit);
91 set_bit(KEY_F5, input_dev->keybit);
92 set_bit(KEY_F6, input_dev->keybit);
93 set_bit(KEY_F7, input_dev->keybit);
94 set_bit(KEY_F8, input_dev->keybit);
95 set_bit(KEY_F9, input_dev->keybit);
96
97 err = input_register_device(input_dev);
98 if (err) {
99 printk(KERN_ERR "atlas: couldn't register input device\n");
100 input_free_device(input_dev);
101 return err;
102 }
103
104 /* hookup button handler */
105 status = acpi_install_address_space_handler(device->handle,
106 0x81, &acpi_atlas_button_handler,
107 &acpi_atlas_button_setup, device);
108 if (ACPI_FAILURE(status)) {
109 printk(KERN_ERR "Atlas: Error installing addr spc handler\n");
110 input_unregister_device(input_dev);
111 status = -EINVAL;
112 }
113
114 return status;
115}
116
117static int atlas_acpi_button_remove(struct acpi_device *device, int type)
118{
119 acpi_status status;
120
121 status = acpi_remove_address_space_handler(device->handle,
122 0x81, &acpi_atlas_button_handler);
123 if (ACPI_FAILURE(status)) {
124 printk(KERN_ERR "Atlas: Error removing addr spc handler\n");
125 status = -EINVAL;
126 }
127
128 input_unregister_device(input_dev);
129
130 return status;
131}
132
133static struct acpi_driver atlas_acpi_driver = {
134 .name = ACPI_ATLAS_NAME,
135 .class = ACPI_ATLAS_CLASS,
136 .ids = ACPI_ATLAS_BUTTON_HID,
137 .ops = {
138 .add = atlas_acpi_button_add,
139 .remove = atlas_acpi_button_remove,
140 },
141};
142
143static int __init atlas_acpi_init(void)
144{
145 int result;
146
147 if (acpi_disabled)
148 return -ENODEV;
149
150 result = acpi_bus_register_driver(&atlas_acpi_driver);
151 if (result < 0) {
152 printk(KERN_ERR "Atlas ACPI: Unable to register driver\n");
153 return -ENODEV;
154 }
155
156 return 0;
157}
158
159static void __exit atlas_acpi_exit(void)
160{
161 acpi_bus_unregister_driver(&atlas_acpi_driver);
162}
163
164module_init(atlas_acpi_init);
165module_exit(atlas_acpi_exit);
166
167MODULE_AUTHOR("Jaya Kumar");
168MODULE_LICENSE("GPL");
169MODULE_DESCRIPTION("Atlas button driver");
170
diff --git a/drivers/input/misc/wistron_btns.c b/drivers/input/misc/wistron_btns.c
index 7b9d1c1da41a..e1183aeb8ed5 100644
--- a/drivers/input/misc/wistron_btns.c
+++ b/drivers/input/misc/wistron_btns.c
@@ -335,6 +335,17 @@ static struct key_entry keymap_aopen_1559as[] = {
335 { KE_END, 0 }, 335 { KE_END, 0 },
336}; 336};
337 337
338static struct key_entry keymap_fs_amilo_d88x0[] = {
339 { KE_KEY, 0x01, KEY_HELP },
340 { KE_KEY, 0x08, KEY_MUTE },
341 { KE_KEY, 0x31, KEY_MAIL },
342 { KE_KEY, 0x36, KEY_WWW },
343 { KE_KEY, 0x11, KEY_PROG1 },
344 { KE_KEY, 0x12, KEY_PROG2 },
345 { KE_KEY, 0x13, KEY_PROG3 },
346 { KE_END, 0 }
347};
348
338/* 349/*
339 * If your machine is not here (which is currently rather likely), please send 350 * If your machine is not here (which is currently rather likely), please send
340 * a list of buttons and their key codes (reported when loading this module 351 * a list of buttons and their key codes (reported when loading this module
@@ -413,6 +424,15 @@ static struct dmi_system_id dmi_ids[] __initdata = {
413 }, 424 },
414 .driver_data = keymap_wistron_ms2111 425 .driver_data = keymap_wistron_ms2111
415 }, 426 },
427 {
428 .callback = dmi_matched,
429 .ident = "Fujitsu Siemens Amilo D88x0",
430 .matches = {
431 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
432 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO D"),
433 },
434 .driver_data = keymap_fs_amilo_d88x0
435 },
416 { NULL, } 436 { NULL, }
417}; 437};
418 438
diff --git a/drivers/input/mouse/inport.c b/drivers/input/mouse/inport.c
index 13dd96785e39..701ebd5473cf 100644
--- a/drivers/input/mouse/inport.c
+++ b/drivers/input/mouse/inport.c
@@ -61,7 +61,7 @@ MODULE_LICENSE("GPL");
61#define INPORT_REG_MODE 0x07 61#define INPORT_REG_MODE 0x07
62#define INPORT_RESET 0x80 62#define INPORT_RESET 0x80
63 63
64#ifdef CONFIG_INPUT_ATIXL 64#ifdef CONFIG_MOUSE_ATIXL
65#define INPORT_NAME "ATI XL Mouse" 65#define INPORT_NAME "ATI XL Mouse"
66#define INPORT_VENDOR 0x0002 66#define INPORT_VENDOR 0x0002
67#define INPORT_SPEED_30HZ 0x01 67#define INPORT_SPEED_30HZ 0x01
diff --git a/drivers/input/mouse/pc110pad.c b/drivers/input/mouse/pc110pad.c
index f155c1fea04e..05d992e514f0 100644
--- a/drivers/input/mouse/pc110pad.c
+++ b/drivers/input/mouse/pc110pad.c
@@ -113,7 +113,7 @@ static int __init pc110pad_init(void)
113 dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); 113 dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
114 if (dev) { 114 if (dev) {
115 pci_dev_put(dev); 115 pci_dev_put(dev);
116 return -ENOENT; 116 return -ENODEV;
117 } 117 }
118 118
119 if (!request_region(pc110pad_io, 4, "pc110pad")) { 119 if (!request_region(pc110pad_io, 4, "pc110pad")) {
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index debe9445488c..c3fdfc1f342a 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -371,7 +371,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id)
371 if (unlikely(i8042_suppress_kbd_ack)) 371 if (unlikely(i8042_suppress_kbd_ack))
372 if (port_no == I8042_KBD_PORT_NO && 372 if (port_no == I8042_KBD_PORT_NO &&
373 (data == 0xfa || data == 0xfe)) { 373 (data == 0xfa || data == 0xfe)) {
374 i8042_suppress_kbd_ack = 0; 374 i8042_suppress_kbd_ack--;
375 goto out; 375 goto out;
376 } 376 }
377 377
@@ -543,6 +543,7 @@ static int __devinit i8042_check_aux(void)
543{ 543{
544 int retval = -1; 544 int retval = -1;
545 int irq_registered = 0; 545 int irq_registered = 0;
546 int aux_loop_broken = 0;
546 unsigned long flags; 547 unsigned long flags;
547 unsigned char param; 548 unsigned char param;
548 549
@@ -572,6 +573,8 @@ static int __devinit i8042_check_aux(void)
572 if (i8042_command(&param, I8042_CMD_AUX_TEST) || 573 if (i8042_command(&param, I8042_CMD_AUX_TEST) ||
573 (param && param != 0xfa && param != 0xff)) 574 (param && param != 0xfa && param != 0xff))
574 return -1; 575 return -1;
576
577 aux_loop_broken = 1;
575 } 578 }
576 579
577/* 580/*
@@ -595,7 +598,7 @@ static int __devinit i8042_check_aux(void)
595 * used it for a PCI card or somethig else. 598 * used it for a PCI card or somethig else.
596 */ 599 */
597 600
598 if (i8042_noloop) { 601 if (i8042_noloop || aux_loop_broken) {
599/* 602/*
600 * Without LOOP command we can't test AUX IRQ delivery. Assume the port 603 * Without LOOP command we can't test AUX IRQ delivery. Assume the port
601 * is working and hope we are right. 604 * is working and hope we are right.
@@ -838,13 +841,14 @@ static long i8042_panic_blink(long count)
838 led ^= 0x01 | 0x04; 841 led ^= 0x01 | 0x04;
839 while (i8042_read_status() & I8042_STR_IBF) 842 while (i8042_read_status() & I8042_STR_IBF)
840 DELAY; 843 DELAY;
841 i8042_suppress_kbd_ack = 1; 844 dbg("%02x -> i8042 (panic blink)", 0xed);
845 i8042_suppress_kbd_ack = 2;
842 i8042_write_data(0xed); /* set leds */ 846 i8042_write_data(0xed); /* set leds */
843 DELAY; 847 DELAY;
844 while (i8042_read_status() & I8042_STR_IBF) 848 while (i8042_read_status() & I8042_STR_IBF)
845 DELAY; 849 DELAY;
846 DELAY; 850 DELAY;
847 i8042_suppress_kbd_ack = 1; 851 dbg("%02x -> i8042 (panic blink)", led);
848 i8042_write_data(led); 852 i8042_write_data(led);
849 DELAY; 853 DELAY;
850 last_blink = count; 854 last_blink = count;
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 6b46c9bf1d20..971618059a6f 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -12,13 +12,18 @@ menuconfig INPUT_TOUCHSCREEN
12if INPUT_TOUCHSCREEN 12if INPUT_TOUCHSCREEN
13 13
14config TOUCHSCREEN_ADS7846 14config TOUCHSCREEN_ADS7846
15 tristate "ADS 7846 based touchscreens" 15 tristate "ADS 7846/7843 based touchscreens"
16 depends on SPI_MASTER 16 depends on SPI_MASTER
17 depends on HWMON = n || HWMON
17 help 18 help
18 Say Y here if you have a touchscreen interface using the 19 Say Y here if you have a touchscreen interface using the
19 ADS7846 controller, and your board-specific initialization 20 ADS7846 or ADS7843 controller, and your board-specific setup
20 code includes that in its table of SPI devices. 21 code includes that in its table of SPI devices.
21 22
23 If HWMON is selected, and the driver is told the reference voltage
24 on your board, you will also get hwmon interfaces for the voltage
25 (and on ads7846, temperature) sensors of this chip.
26
22 If unsure, say N (but it's safe to say "Y"). 27 If unsure, say N (but it's safe to say "Y").
23 28
24 To compile this driver as a module, choose M here: the 29 To compile this driver as a module, choose M here: the
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index c6164b6f476a..cd251efda410 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -17,8 +17,9 @@
17 * it under the terms of the GNU General Public License version 2 as 17 * it under the terms of the GNU General Public License version 2 as
18 * published by the Free Software Foundation. 18 * published by the Free Software Foundation.
19 */ 19 */
20#include <linux/device.h> 20#include <linux/hwmon.h>
21#include <linux/init.h> 21#include <linux/init.h>
22#include <linux/err.h>
22#include <linux/delay.h> 23#include <linux/delay.h>
23#include <linux/input.h> 24#include <linux/input.h>
24#include <linux/interrupt.h> 25#include <linux/interrupt.h>
@@ -54,7 +55,8 @@
54 * files. 55 * files.
55 */ 56 */
56 57
57#define TS_POLL_PERIOD msecs_to_jiffies(10) 58#define TS_POLL_DELAY (1 * 1000000) /* ns delay before the first sample */
59#define TS_POLL_PERIOD (5 * 1000000) /* ns delay between samples */
58 60
59/* this driver doesn't aim at the peak continuous sample rate */ 61/* this driver doesn't aim at the peak continuous sample rate */
60#define SAMPLE_BITS (8 /*cmd*/ + 16 /*sample*/ + 2 /* before, after */) 62#define SAMPLE_BITS (8 /*cmd*/ + 16 /*sample*/ + 2 /* before, after */)
@@ -63,12 +65,12 @@ struct ts_event {
63 /* For portability, we can't read 12 bit values using SPI (which 65 /* For portability, we can't read 12 bit values using SPI (which
64 * would make the controller deliver them as native byteorder u16 66 * would make the controller deliver them as native byteorder u16
65 * with msbs zeroed). Instead, we read them as two 8-bit values, 67 * with msbs zeroed). Instead, we read them as two 8-bit values,
66 * which need byteswapping then range adjustment. 68 * *** WHICH NEED BYTESWAPPING *** and range adjustment.
67 */ 69 */
68 __be16 x; 70 u16 x;
69 __be16 y; 71 u16 y;
70 __be16 z1, z2; 72 u16 z1, z2;
71 int ignore; 73 int ignore;
72}; 74};
73 75
74struct ads7846 { 76struct ads7846 {
@@ -76,7 +78,12 @@ struct ads7846 {
76 char phys[32]; 78 char phys[32];
77 79
78 struct spi_device *spi; 80 struct spi_device *spi;
81
82#if defined(CONFIG_HWMON) || defined(CONFIG_HWMON_MODULE)
79 struct attribute_group *attr_group; 83 struct attribute_group *attr_group;
84 struct class_device *hwmon;
85#endif
86
80 u16 model; 87 u16 model;
81 u16 vref_delay_usecs; 88 u16 vref_delay_usecs;
82 u16 x_plate_ohms; 89 u16 x_plate_ohms;
@@ -99,13 +106,16 @@ struct ads7846 {
99 u16 debounce_rep; 106 u16 debounce_rep;
100 107
101 spinlock_t lock; 108 spinlock_t lock;
102 struct timer_list timer; /* P: lock */ 109 struct hrtimer timer;
103 unsigned pendown:1; /* P: lock */ 110 unsigned pendown:1; /* P: lock */
104 unsigned pending:1; /* P: lock */ 111 unsigned pending:1; /* P: lock */
105// FIXME remove "irq_disabled" 112// FIXME remove "irq_disabled"
106 unsigned irq_disabled:1; /* P: lock */ 113 unsigned irq_disabled:1; /* P: lock */
107 unsigned disabled:1; 114 unsigned disabled:1;
108 115
116 int (*filter)(void *data, int data_idx, int *val);
117 void *filter_data;
118 void (*filter_cleanup)(void *data);
109 int (*get_pendown_state)(void); 119 int (*get_pendown_state)(void);
110}; 120};
111 121
@@ -142,15 +152,16 @@ struct ads7846 {
142#define MAX_12BIT ((1<<12)-1) 152#define MAX_12BIT ((1<<12)-1)
143 153
144/* leave ADC powered up (disables penirq) between differential samples */ 154/* leave ADC powered up (disables penirq) between differential samples */
145#define READ_12BIT_DFR(x) (ADS_START | ADS_A2A1A0_d_ ## x \ 155#define READ_12BIT_DFR(x, adc, vref) (ADS_START | ADS_A2A1A0_d_ ## x \
146 | ADS_12_BIT | ADS_DFR) 156 | ADS_12_BIT | ADS_DFR | \
157 (adc ? ADS_PD10_ADC_ON : 0) | (vref ? ADS_PD10_REF_ON : 0))
147 158
148#define READ_Y (READ_12BIT_DFR(y) | ADS_PD10_ADC_ON) 159#define READ_Y(vref) (READ_12BIT_DFR(y, 1, vref))
149#define READ_Z1 (READ_12BIT_DFR(z1) | ADS_PD10_ADC_ON) 160#define READ_Z1(vref) (READ_12BIT_DFR(z1, 1, vref))
150#define READ_Z2 (READ_12BIT_DFR(z2) | ADS_PD10_ADC_ON) 161#define READ_Z2(vref) (READ_12BIT_DFR(z2, 1, vref))
151 162
152#define READ_X (READ_12BIT_DFR(x) | ADS_PD10_ADC_ON) 163#define READ_X(vref) (READ_12BIT_DFR(x, 1, vref))
153#define PWRDOWN (READ_12BIT_DFR(y) | ADS_PD10_PDOWN) /* LAST */ 164#define PWRDOWN (READ_12BIT_DFR(y, 0, 0)) /* LAST */
154 165
155/* single-ended samples need to first power up reference voltage; 166/* single-ended samples need to first power up reference voltage;
156 * we leave both ADC and VREF powered 167 * we leave both ADC and VREF powered
@@ -158,14 +169,19 @@ struct ads7846 {
158#define READ_12BIT_SER(x) (ADS_START | ADS_A2A1A0_ ## x \ 169#define READ_12BIT_SER(x) (ADS_START | ADS_A2A1A0_ ## x \
159 | ADS_12_BIT | ADS_SER) 170 | ADS_12_BIT | ADS_SER)
160 171
161#define REF_ON (READ_12BIT_DFR(x) | ADS_PD10_ALL_ON) 172#define REF_ON (READ_12BIT_DFR(x, 1, 1))
162#define REF_OFF (READ_12BIT_DFR(y) | ADS_PD10_PDOWN) 173#define REF_OFF (READ_12BIT_DFR(y, 0, 0))
163 174
164/*--------------------------------------------------------------------------*/ 175/*--------------------------------------------------------------------------*/
165 176
166/* 177/*
167 * Non-touchscreen sensors only use single-ended conversions. 178 * Non-touchscreen sensors only use single-ended conversions.
179 * The range is GND..vREF. The ads7843 and ads7835 must use external vREF;
180 * ads7846 lets that pin be unconnected, to use internal vREF.
168 */ 181 */
182static unsigned vREF_mV;
183module_param(vREF_mV, uint, 0);
184MODULE_PARM_DESC(vREF_mV, "external vREF voltage, in milliVolts");
169 185
170struct ser_req { 186struct ser_req {
171 u8 ref_on; 187 u8 ref_on;
@@ -193,50 +209,55 @@ static int ads7846_read12_ser(struct device *dev, unsigned command)
193 struct ser_req *req = kzalloc(sizeof *req, GFP_KERNEL); 209 struct ser_req *req = kzalloc(sizeof *req, GFP_KERNEL);
194 int status; 210 int status;
195 int sample; 211 int sample;
196 int i; 212 int use_internal;
197 213
198 if (!req) 214 if (!req)
199 return -ENOMEM; 215 return -ENOMEM;
200 216
201 spi_message_init(&req->msg); 217 spi_message_init(&req->msg);
202 218
203 /* activate reference, so it has time to settle; */ 219 /* FIXME boards with ads7846 might use external vref instead ... */
204 req->ref_on = REF_ON; 220 use_internal = (ts->model == 7846);
205 req->xfer[0].tx_buf = &req->ref_on; 221
206 req->xfer[0].len = 1; 222 /* maybe turn on internal vREF, and let it settle */
207 req->xfer[1].rx_buf = &req->scratch; 223 if (use_internal) {
208 req->xfer[1].len = 2; 224 req->ref_on = REF_ON;
209 225 req->xfer[0].tx_buf = &req->ref_on;
210 /* 226 req->xfer[0].len = 1;
211 * for external VREF, 0 usec (and assume it's always on); 227 spi_message_add_tail(&req->xfer[0], &req->msg);
212 * for 1uF, use 800 usec; 228
213 * no cap, 100 usec. 229 req->xfer[1].rx_buf = &req->scratch;
214 */ 230 req->xfer[1].len = 2;
215 req->xfer[1].delay_usecs = ts->vref_delay_usecs; 231
232 /* for 1uF, settle for 800 usec; no cap, 100 usec. */
233 req->xfer[1].delay_usecs = ts->vref_delay_usecs;
234 spi_message_add_tail(&req->xfer[1], &req->msg);
235 }
216 236
217 /* take sample */ 237 /* take sample */
218 req->command = (u8) command; 238 req->command = (u8) command;
219 req->xfer[2].tx_buf = &req->command; 239 req->xfer[2].tx_buf = &req->command;
220 req->xfer[2].len = 1; 240 req->xfer[2].len = 1;
241 spi_message_add_tail(&req->xfer[2], &req->msg);
242
221 req->xfer[3].rx_buf = &req->sample; 243 req->xfer[3].rx_buf = &req->sample;
222 req->xfer[3].len = 2; 244 req->xfer[3].len = 2;
245 spi_message_add_tail(&req->xfer[3], &req->msg);
223 246
224 /* REVISIT: take a few more samples, and compare ... */ 247 /* REVISIT: take a few more samples, and compare ... */
225 248
226 /* turn off reference */ 249 /* maybe off internal vREF */
227 req->ref_off = REF_OFF; 250 if (use_internal) {
228 req->xfer[4].tx_buf = &req->ref_off; 251 req->ref_off = REF_OFF;
229 req->xfer[4].len = 1; 252 req->xfer[4].tx_buf = &req->ref_off;
230 req->xfer[5].rx_buf = &req->scratch; 253 req->xfer[4].len = 1;
231 req->xfer[5].len = 2; 254 spi_message_add_tail(&req->xfer[4], &req->msg);
232 255
233 CS_CHANGE(req->xfer[5]); 256 req->xfer[5].rx_buf = &req->scratch;
234 257 req->xfer[5].len = 2;
235 /* group all the transfers together, so we can't interfere with 258 CS_CHANGE(req->xfer[5]);
236 * reading touchscreen state; disable penirq while sampling 259 spi_message_add_tail(&req->xfer[5], &req->msg);
237 */ 260 }
238 for (i = 0; i < 6; i++)
239 spi_message_add_tail(&req->xfer[i], &req->msg);
240 261
241 ts->irq_disabled = 1; 262 ts->irq_disabled = 1;
242 disable_irq(spi->irq); 263 disable_irq(spi->irq);
@@ -256,25 +277,173 @@ static int ads7846_read12_ser(struct device *dev, unsigned command)
256 return status ? status : sample; 277 return status ? status : sample;
257} 278}
258 279
259#define SHOW(name) static ssize_t \ 280#if defined(CONFIG_HWMON) || defined(CONFIG_HWMON_MODULE)
281
282#define SHOW(name, var, adjust) static ssize_t \
260name ## _show(struct device *dev, struct device_attribute *attr, char *buf) \ 283name ## _show(struct device *dev, struct device_attribute *attr, char *buf) \
261{ \ 284{ \
285 struct ads7846 *ts = dev_get_drvdata(dev); \
262 ssize_t v = ads7846_read12_ser(dev, \ 286 ssize_t v = ads7846_read12_ser(dev, \
263 READ_12BIT_SER(name) | ADS_PD10_ALL_ON); \ 287 READ_12BIT_SER(var) | ADS_PD10_ALL_ON); \
264 if (v < 0) \ 288 if (v < 0) \
265 return v; \ 289 return v; \
266 return sprintf(buf, "%u\n", (unsigned) v); \ 290 return sprintf(buf, "%u\n", adjust(ts, v)); \
267} \ 291} \
268static DEVICE_ATTR(name, S_IRUGO, name ## _show, NULL); 292static DEVICE_ATTR(name, S_IRUGO, name ## _show, NULL);
269 293
270SHOW(temp0) 294
271SHOW(temp1) 295/* Sysfs conventions report temperatures in millidegrees Celcius.
272SHOW(vaux) 296 * ADS7846 could use the low-accuracy two-sample scheme, but can't do the high
273SHOW(vbatt) 297 * accuracy scheme without calibration data. For now we won't try either;
298 * userspace sees raw sensor values, and must scale/calibrate appropriately.
299 */
300static inline unsigned null_adjust(struct ads7846 *ts, ssize_t v)
301{
302 return v;
303}
304
305SHOW(temp0, temp0, null_adjust) /* temp1_input */
306SHOW(temp1, temp1, null_adjust) /* temp2_input */
307
308
309/* sysfs conventions report voltages in millivolts. We can convert voltages
310 * if we know vREF. userspace may need to scale vAUX to match the board's
311 * external resistors; we assume that vBATT only uses the internal ones.
312 */
313static inline unsigned vaux_adjust(struct ads7846 *ts, ssize_t v)
314{
315 unsigned retval = v;
316
317 /* external resistors may scale vAUX into 0..vREF */
318 retval *= vREF_mV;
319 retval = retval >> 12;
320 return retval;
321}
322
323static inline unsigned vbatt_adjust(struct ads7846 *ts, ssize_t v)
324{
325 unsigned retval = vaux_adjust(ts, v);
326
327 /* ads7846 has a resistor ladder to scale this signal down */
328 if (ts->model == 7846)
329 retval *= 4;
330 return retval;
331}
332
333SHOW(in0_input, vaux, vaux_adjust)
334SHOW(in1_input, vbatt, vbatt_adjust)
335
336
337static struct attribute *ads7846_attributes[] = {
338 &dev_attr_temp0.attr,
339 &dev_attr_temp1.attr,
340 &dev_attr_in0_input.attr,
341 &dev_attr_in1_input.attr,
342 NULL,
343};
344
345static struct attribute_group ads7846_attr_group = {
346 .attrs = ads7846_attributes,
347};
348
349static struct attribute *ads7843_attributes[] = {
350 &dev_attr_in0_input.attr,
351 &dev_attr_in1_input.attr,
352 NULL,
353};
354
355static struct attribute_group ads7843_attr_group = {
356 .attrs = ads7843_attributes,
357};
358
359static struct attribute *ads7845_attributes[] = {
360 &dev_attr_in0_input.attr,
361 NULL,
362};
363
364static struct attribute_group ads7845_attr_group = {
365 .attrs = ads7845_attributes,
366};
367
368static int ads784x_hwmon_register(struct spi_device *spi, struct ads7846 *ts)
369{
370 struct class_device *hwmon;
371 int err;
372
373 /* hwmon sensors need a reference voltage */
374 switch (ts->model) {
375 case 7846:
376 if (!vREF_mV) {
377 dev_dbg(&spi->dev, "assuming 2.5V internal vREF\n");
378 vREF_mV = 2500;
379 }
380 break;
381 case 7845:
382 case 7843:
383 if (!vREF_mV) {
384 dev_warn(&spi->dev,
385 "external vREF for ADS%d not specified\n",
386 ts->model);
387 return 0;
388 }
389 break;
390 }
391
392 /* different chips have different sensor groups */
393 switch (ts->model) {
394 case 7846:
395 ts->attr_group = &ads7846_attr_group;
396 break;
397 case 7845:
398 ts->attr_group = &ads7845_attr_group;
399 break;
400 case 7843:
401 ts->attr_group = &ads7843_attr_group;
402 break;
403 default:
404 dev_dbg(&spi->dev, "ADS%d not recognized\n", ts->model);
405 return 0;
406 }
407
408 err = sysfs_create_group(&spi->dev.kobj, ts->attr_group);
409 if (err)
410 return err;
411
412 hwmon = hwmon_device_register(&spi->dev);
413 if (IS_ERR(hwmon)) {
414 sysfs_remove_group(&spi->dev.kobj, ts->attr_group);
415 return PTR_ERR(hwmon);
416 }
417
418 ts->hwmon = hwmon;
419 return 0;
420}
421
422static void ads784x_hwmon_unregister(struct spi_device *spi,
423 struct ads7846 *ts)
424{
425 if (ts->hwmon) {
426 sysfs_remove_group(&spi->dev.kobj, ts->attr_group);
427 hwmon_device_unregister(ts->hwmon);
428 }
429}
430
431#else
432static inline int ads784x_hwmon_register(struct spi_device *spi,
433 struct ads7846 *ts)
434{
435 return 0;
436}
437
438static inline void ads784x_hwmon_unregister(struct spi_device *spi,
439 struct ads7846 *ts)
440{
441}
442#endif
274 443
275static int is_pen_down(struct device *dev) 444static int is_pen_down(struct device *dev)
276{ 445{
277 struct ads7846 *ts = dev_get_drvdata(dev); 446 struct ads7846 *ts = dev_get_drvdata(dev);
278 447
279 return ts->pendown; 448 return ts->pendown;
280} 449}
@@ -318,46 +487,14 @@ static ssize_t ads7846_disable_store(struct device *dev,
318 487
319static DEVICE_ATTR(disable, 0664, ads7846_disable_show, ads7846_disable_store); 488static DEVICE_ATTR(disable, 0664, ads7846_disable_show, ads7846_disable_store);
320 489
321static struct attribute *ads7846_attributes[] = { 490static struct attribute *ads784x_attributes[] = {
322 &dev_attr_temp0.attr,
323 &dev_attr_temp1.attr,
324 &dev_attr_vbatt.attr,
325 &dev_attr_vaux.attr,
326 &dev_attr_pen_down.attr,
327 &dev_attr_disable.attr,
328 NULL,
329};
330
331static struct attribute_group ads7846_attr_group = {
332 .attrs = ads7846_attributes,
333};
334
335/*
336 * ads7843/7845 don't have temperature sensors, and
337 * use the other sensors a bit differently too
338 */
339
340static struct attribute *ads7843_attributes[] = {
341 &dev_attr_vbatt.attr,
342 &dev_attr_vaux.attr,
343 &dev_attr_pen_down.attr, 491 &dev_attr_pen_down.attr,
344 &dev_attr_disable.attr, 492 &dev_attr_disable.attr,
345 NULL, 493 NULL,
346}; 494};
347 495
348static struct attribute_group ads7843_attr_group = { 496static struct attribute_group ads784x_attr_group = {
349 .attrs = ads7843_attributes, 497 .attrs = ads784x_attributes,
350};
351
352static struct attribute *ads7845_attributes[] = {
353 &dev_attr_vaux.attr,
354 &dev_attr_pen_down.attr,
355 &dev_attr_disable.attr,
356 NULL,
357};
358
359static struct attribute_group ads7845_attr_group = {
360 .attrs = ads7845_attributes,
361}; 498};
362 499
363/*--------------------------------------------------------------------------*/ 500/*--------------------------------------------------------------------------*/
@@ -373,25 +510,22 @@ static struct attribute_group ads7845_attr_group = {
373static void ads7846_rx(void *ads) 510static void ads7846_rx(void *ads)
374{ 511{
375 struct ads7846 *ts = ads; 512 struct ads7846 *ts = ads;
376 struct input_dev *input_dev = ts->input;
377 unsigned Rt; 513 unsigned Rt;
378 unsigned sync = 0;
379 u16 x, y, z1, z2; 514 u16 x, y, z1, z2;
380 unsigned long flags;
381 515
382 /* adjust: on-wire is a must-ignore bit, a BE12 value, then padding; 516 /* ads7846_rx_val() did in-place conversion (including byteswap) from
383 * built from two 8 bit values written msb-first. 517 * on-the-wire format as part of debouncing to get stable readings.
384 */ 518 */
385 x = (be16_to_cpu(ts->tc.x) >> 3) & 0x0fff; 519 x = ts->tc.x;
386 y = (be16_to_cpu(ts->tc.y) >> 3) & 0x0fff; 520 y = ts->tc.y;
387 z1 = (be16_to_cpu(ts->tc.z1) >> 3) & 0x0fff; 521 z1 = ts->tc.z1;
388 z2 = (be16_to_cpu(ts->tc.z2) >> 3) & 0x0fff; 522 z2 = ts->tc.z2;
389 523
390 /* range filtering */ 524 /* range filtering */
391 if (x == MAX_12BIT) 525 if (x == MAX_12BIT)
392 x = 0; 526 x = 0;
393 527
394 if (likely(x && z1 && !device_suspended(&ts->spi->dev))) { 528 if (likely(x && z1)) {
395 /* compute touch pressure resistance using equation #2 */ 529 /* compute touch pressure resistance using equation #2 */
396 Rt = z2; 530 Rt = z2;
397 Rt -= z1; 531 Rt -= z1;
@@ -403,100 +537,129 @@ static void ads7846_rx(void *ads)
403 Rt = 0; 537 Rt = 0;
404 538
405 /* Sample found inconsistent by debouncing or pressure is beyond 539 /* Sample found inconsistent by debouncing or pressure is beyond
406 * the maximum. Don't report it to user space, repeat at least 540 * the maximum. Don't report it to user space, repeat at least
407 * once more the measurement */ 541 * once more the measurement
542 */
408 if (ts->tc.ignore || Rt > ts->pressure_max) { 543 if (ts->tc.ignore || Rt > ts->pressure_max) {
409 mod_timer(&ts->timer, jiffies + TS_POLL_PERIOD); 544#ifdef VERBOSE
545 pr_debug("%s: ignored %d pressure %d\n",
546 ts->spi->dev.bus_id, ts->tc.ignore, Rt);
547#endif
548 hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_PERIOD),
549 HRTIMER_REL);
410 return; 550 return;
411 } 551 }
412 552
413 /* NOTE: "pendown" is inferred from pressure; we don't rely on 553 /* NOTE: We can't rely on the pressure to determine the pen down
414 * being able to check nPENIRQ status, or "friendly" trigger modes 554 * state, even this controller has a pressure sensor. The pressure
415 * (both-edges is much better than just-falling or low-level). 555 * value can fluctuate for quite a while after lifting the pen and
556 * in some cases may not even settle at the expected value.
416 * 557 *
417 * REVISIT: some boards may require reading nPENIRQ; it's 558 * The only safe way to check for the pen up condition is in the
418 * needed on 7843. and 7845 reads pressure differently... 559 * timer by reading the pen signal state (it's a GPIO _and_ IRQ).
419 *
420 * REVISIT: the touchscreen might not be connected; this code
421 * won't notice that, even if nPENIRQ never fires ...
422 */ 560 */
423 if (!ts->pendown && Rt != 0) {
424 input_report_key(input_dev, BTN_TOUCH, 1);
425 sync = 1;
426 } else if (ts->pendown && Rt == 0) {
427 input_report_key(input_dev, BTN_TOUCH, 0);
428 sync = 1;
429 }
430
431 if (Rt) { 561 if (Rt) {
432 input_report_abs(input_dev, ABS_X, x); 562 struct input_dev *input = ts->input;
433 input_report_abs(input_dev, ABS_Y, y);
434 sync = 1;
435 }
436
437 if (sync) {
438 input_report_abs(input_dev, ABS_PRESSURE, Rt);
439 input_sync(input_dev);
440 }
441 563
442#ifdef VERBOSE 564 if (!ts->pendown) {
443 if (Rt || ts->pendown) 565 input_report_key(input, BTN_TOUCH, 1);
444 pr_debug("%s: %d/%d/%d%s\n", ts->spi->dev.bus_id, 566 ts->pendown = 1;
445 x, y, Rt, Rt ? "" : " UP"); 567#ifdef VERBOSE
568 dev_dbg(&ts->spi->dev, "DOWN\n");
446#endif 569#endif
570 }
571 input_report_abs(input, ABS_X, x);
572 input_report_abs(input, ABS_Y, y);
573 input_report_abs(input, ABS_PRESSURE, Rt);
447 574
448 spin_lock_irqsave(&ts->lock, flags); 575 input_sync(input);
449 576#ifdef VERBOSE
450 ts->pendown = (Rt != 0); 577 dev_dbg(&ts->spi->dev, "%4d/%4d/%4d\n", x, y, Rt);
451 mod_timer(&ts->timer, jiffies + TS_POLL_PERIOD); 578#endif
579 }
452 580
453 spin_unlock_irqrestore(&ts->lock, flags); 581 hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_PERIOD), HRTIMER_REL);
454} 582}
455 583
456static void ads7846_debounce(void *ads) 584static int ads7846_debounce(void *ads, int data_idx, int *val)
457{ 585{
458 struct ads7846 *ts = ads; 586 struct ads7846 *ts = ads;
459 struct spi_message *m;
460 struct spi_transfer *t;
461 int val;
462 int status;
463 587
464 m = &ts->msg[ts->msg_idx]; 588 if (!ts->read_cnt || (abs(ts->last_read - *val) > ts->debounce_tol)) {
465 t = list_entry(m->transfers.prev, struct spi_transfer, transfer_list); 589 /* Start over collecting consistent readings. */
466 val = (be16_to_cpu(*(__be16 *)t->rx_buf) >> 3) & 0x0fff; 590 ts->read_rep = 0;
467 if (!ts->read_cnt || (abs(ts->last_read - val) > ts->debounce_tol)) {
468 /* Repeat it, if this was the first read or the read 591 /* Repeat it, if this was the first read or the read
469 * wasn't consistent enough. */ 592 * wasn't consistent enough. */
470 if (ts->read_cnt < ts->debounce_max) { 593 if (ts->read_cnt < ts->debounce_max) {
471 ts->last_read = val; 594 ts->last_read = *val;
472 ts->read_cnt++; 595 ts->read_cnt++;
596 return ADS7846_FILTER_REPEAT;
473 } else { 597 } else {
474 /* Maximum number of debouncing reached and still 598 /* Maximum number of debouncing reached and still
475 * not enough number of consistent readings. Abort 599 * not enough number of consistent readings. Abort
476 * the whole sample, repeat it in the next sampling 600 * the whole sample, repeat it in the next sampling
477 * period. 601 * period.
478 */ 602 */
479 ts->tc.ignore = 1;
480 ts->read_cnt = 0; 603 ts->read_cnt = 0;
481 /* Last message will contain ads7846_rx() as the 604 return ADS7846_FILTER_IGNORE;
482 * completion function.
483 */
484 m = ts->last_msg;
485 } 605 }
486 /* Start over collecting consistent readings. */
487 ts->read_rep = 0;
488 } else { 606 } else {
489 if (++ts->read_rep > ts->debounce_rep) { 607 if (++ts->read_rep > ts->debounce_rep) {
490 /* Got a good reading for this coordinate, 608 /* Got a good reading for this coordinate,
491 * go for the next one. */ 609 * go for the next one. */
492 ts->tc.ignore = 0;
493 ts->msg_idx++;
494 ts->read_cnt = 0; 610 ts->read_cnt = 0;
495 ts->read_rep = 0; 611 ts->read_rep = 0;
496 m++; 612 return ADS7846_FILTER_OK;
497 } else 613 } else {
498 /* Read more values that are consistent. */ 614 /* Read more values that are consistent. */
499 ts->read_cnt++; 615 ts->read_cnt++;
616 return ADS7846_FILTER_REPEAT;
617 }
618 }
619}
620
621static int ads7846_no_filter(void *ads, int data_idx, int *val)
622{
623 return ADS7846_FILTER_OK;
624}
625
626static void ads7846_rx_val(void *ads)
627{
628 struct ads7846 *ts = ads;
629 struct spi_message *m;
630 struct spi_transfer *t;
631 u16 *rx_val;
632 int val;
633 int action;
634 int status;
635
636 m = &ts->msg[ts->msg_idx];
637 t = list_entry(m->transfers.prev, struct spi_transfer, transfer_list);
638 rx_val = t->rx_buf;
639
640 /* adjust: on-wire is a must-ignore bit, a BE12 value, then padding;
641 * built from two 8 bit values written msb-first.
642 */
643 val = be16_to_cpu(*rx_val) >> 3;
644
645 action = ts->filter(ts->filter_data, ts->msg_idx, &val);
646 switch (action) {
647 case ADS7846_FILTER_REPEAT:
648 break;
649 case ADS7846_FILTER_IGNORE:
650 ts->tc.ignore = 1;
651 /* Last message will contain ads7846_rx() as the
652 * completion function.
653 */
654 m = ts->last_msg;
655 break;
656 case ADS7846_FILTER_OK:
657 *rx_val = val;
658 ts->tc.ignore = 0;
659 m = &ts->msg[++ts->msg_idx];
660 break;
661 default:
662 BUG();
500 } 663 }
501 status = spi_async(ts->spi, m); 664 status = spi_async(ts->spi, m);
502 if (status) 665 if (status)
@@ -504,21 +667,34 @@ static void ads7846_debounce(void *ads)
504 status); 667 status);
505} 668}
506 669
507static void ads7846_timer(unsigned long handle) 670static int ads7846_timer(struct hrtimer *handle)
508{ 671{
509 struct ads7846 *ts = (void *)handle; 672 struct ads7846 *ts = container_of(handle, struct ads7846, timer);
510 int status = 0; 673 int status = 0;
511 674
512 spin_lock_irq(&ts->lock); 675 spin_lock_irq(&ts->lock);
513 676
514 if (unlikely(ts->msg_idx && !ts->pendown)) { 677 if (unlikely(!ts->get_pendown_state() ||
678 device_suspended(&ts->spi->dev))) {
679 if (ts->pendown) {
680 struct input_dev *input = ts->input;
681
682 input_report_key(input, BTN_TOUCH, 0);
683 input_report_abs(input, ABS_PRESSURE, 0);
684 input_sync(input);
685
686 ts->pendown = 0;
687#ifdef VERBOSE
688 dev_dbg(&ts->spi->dev, "UP\n");
689#endif
690 }
691
515 /* measurement cycle ended */ 692 /* measurement cycle ended */
516 if (!device_suspended(&ts->spi->dev)) { 693 if (!device_suspended(&ts->spi->dev)) {
517 ts->irq_disabled = 0; 694 ts->irq_disabled = 0;
518 enable_irq(ts->spi->irq); 695 enable_irq(ts->spi->irq);
519 } 696 }
520 ts->pending = 0; 697 ts->pending = 0;
521 ts->msg_idx = 0;
522 } else { 698 } else {
523 /* pen is still down, continue with the measurement */ 699 /* pen is still down, continue with the measurement */
524 ts->msg_idx = 0; 700 ts->msg_idx = 0;
@@ -528,6 +704,7 @@ static void ads7846_timer(unsigned long handle)
528 } 704 }
529 705
530 spin_unlock_irq(&ts->lock); 706 spin_unlock_irq(&ts->lock);
707 return HRTIMER_NORESTART;
531} 708}
532 709
533static irqreturn_t ads7846_irq(int irq, void *handle) 710static irqreturn_t ads7846_irq(int irq, void *handle)
@@ -546,7 +723,8 @@ static irqreturn_t ads7846_irq(int irq, void *handle)
546 ts->irq_disabled = 1; 723 ts->irq_disabled = 1;
547 disable_irq(ts->spi->irq); 724 disable_irq(ts->spi->irq);
548 ts->pending = 1; 725 ts->pending = 1;
549 mod_timer(&ts->timer, jiffies); 726 hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_DELAY),
727 HRTIMER_REL);
550 } 728 }
551 } 729 }
552 spin_unlock_irqrestore(&ts->lock, flags); 730 spin_unlock_irqrestore(&ts->lock, flags);
@@ -632,6 +810,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
632 struct ads7846_platform_data *pdata = spi->dev.platform_data; 810 struct ads7846_platform_data *pdata = spi->dev.platform_data;
633 struct spi_message *m; 811 struct spi_message *m;
634 struct spi_transfer *x; 812 struct spi_transfer *x;
813 int vref;
635 int err; 814 int err;
636 815
637 if (!spi->irq) { 816 if (!spi->irq) {
@@ -665,6 +844,10 @@ static int __devinit ads7846_probe(struct spi_device *spi)
665 * may not. So we stick to very-portable 8 bit words, both RX and TX. 844 * may not. So we stick to very-portable 8 bit words, both RX and TX.
666 */ 845 */
667 spi->bits_per_word = 8; 846 spi->bits_per_word = 8;
847 spi->mode = SPI_MODE_1;
848 err = spi_setup(spi);
849 if (err < 0)
850 return err;
668 851
669 ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL); 852 ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL);
670 input_dev = input_allocate_device(); 853 input_dev = input_allocate_device();
@@ -679,8 +862,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
679 ts->spi = spi; 862 ts->spi = spi;
680 ts->input = input_dev; 863 ts->input = input_dev;
681 864
682 init_timer(&ts->timer); 865 hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_REL);
683 ts->timer.data = (unsigned long) ts;
684 ts->timer.function = ads7846_timer; 866 ts->timer.function = ads7846_timer;
685 867
686 spin_lock_init(&ts->lock); 868 spin_lock_init(&ts->lock);
@@ -689,14 +871,25 @@ static int __devinit ads7846_probe(struct spi_device *spi)
689 ts->vref_delay_usecs = pdata->vref_delay_usecs ? : 100; 871 ts->vref_delay_usecs = pdata->vref_delay_usecs ? : 100;
690 ts->x_plate_ohms = pdata->x_plate_ohms ? : 400; 872 ts->x_plate_ohms = pdata->x_plate_ohms ? : 400;
691 ts->pressure_max = pdata->pressure_max ? : ~0; 873 ts->pressure_max = pdata->pressure_max ? : ~0;
692 if (pdata->debounce_max) { 874
875 if (pdata->filter != NULL) {
876 if (pdata->filter_init != NULL) {
877 err = pdata->filter_init(pdata, &ts->filter_data);
878 if (err < 0)
879 goto err_free_mem;
880 }
881 ts->filter = pdata->filter;
882 ts->filter_cleanup = pdata->filter_cleanup;
883 } else if (pdata->debounce_max) {
693 ts->debounce_max = pdata->debounce_max; 884 ts->debounce_max = pdata->debounce_max;
885 if (ts->debounce_max < 2)
886 ts->debounce_max = 2;
694 ts->debounce_tol = pdata->debounce_tol; 887 ts->debounce_tol = pdata->debounce_tol;
695 ts->debounce_rep = pdata->debounce_rep; 888 ts->debounce_rep = pdata->debounce_rep;
696 if (ts->debounce_rep > ts->debounce_max + 1) 889 ts->filter = ads7846_debounce;
697 ts->debounce_rep = ts->debounce_max - 1; 890 ts->filter_data = ts;
698 } else 891 } else
699 ts->debounce_tol = ~0; 892 ts->filter = ads7846_no_filter;
700 ts->get_pendown_state = pdata->get_pendown_state; 893 ts->get_pendown_state = pdata->get_pendown_state;
701 894
702 snprintf(ts->phys, sizeof(ts->phys), "%s/input0", spi->dev.bus_id); 895 snprintf(ts->phys, sizeof(ts->phys), "%s/input0", spi->dev.bus_id);
@@ -718,6 +911,8 @@ static int __devinit ads7846_probe(struct spi_device *spi)
718 input_set_abs_params(input_dev, ABS_PRESSURE, 911 input_set_abs_params(input_dev, ABS_PRESSURE,
719 pdata->pressure_min, pdata->pressure_max, 0, 0); 912 pdata->pressure_min, pdata->pressure_max, 0, 0);
720 913
914 vref = pdata->keep_vref_on;
915
721 /* set up the transfers to read touchscreen state; this assumes we 916 /* set up the transfers to read touchscreen state; this assumes we
722 * use formula #2 for pressure, not #3. 917 * use formula #2 for pressure, not #3.
723 */ 918 */
@@ -727,7 +922,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
727 spi_message_init(m); 922 spi_message_init(m);
728 923
729 /* y- still on; turn on only y+ (and ADC) */ 924 /* y- still on; turn on only y+ (and ADC) */
730 ts->read_y = READ_Y; 925 ts->read_y = READ_Y(vref);
731 x->tx_buf = &ts->read_y; 926 x->tx_buf = &ts->read_y;
732 x->len = 1; 927 x->len = 1;
733 spi_message_add_tail(x, m); 928 spi_message_add_tail(x, m);
@@ -737,7 +932,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
737 x->len = 2; 932 x->len = 2;
738 spi_message_add_tail(x, m); 933 spi_message_add_tail(x, m);
739 934
740 m->complete = ads7846_debounce; 935 m->complete = ads7846_rx_val;
741 m->context = ts; 936 m->context = ts;
742 937
743 m++; 938 m++;
@@ -745,7 +940,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
745 940
746 /* turn y- off, x+ on, then leave in lowpower */ 941 /* turn y- off, x+ on, then leave in lowpower */
747 x++; 942 x++;
748 ts->read_x = READ_X; 943 ts->read_x = READ_X(vref);
749 x->tx_buf = &ts->read_x; 944 x->tx_buf = &ts->read_x;
750 x->len = 1; 945 x->len = 1;
751 spi_message_add_tail(x, m); 946 spi_message_add_tail(x, m);
@@ -755,7 +950,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
755 x->len = 2; 950 x->len = 2;
756 spi_message_add_tail(x, m); 951 spi_message_add_tail(x, m);
757 952
758 m->complete = ads7846_debounce; 953 m->complete = ads7846_rx_val;
759 m->context = ts; 954 m->context = ts;
760 955
761 /* turn y+ off, x- on; we'll use formula #2 */ 956 /* turn y+ off, x- on; we'll use formula #2 */
@@ -764,7 +959,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
764 spi_message_init(m); 959 spi_message_init(m);
765 960
766 x++; 961 x++;
767 ts->read_z1 = READ_Z1; 962 ts->read_z1 = READ_Z1(vref);
768 x->tx_buf = &ts->read_z1; 963 x->tx_buf = &ts->read_z1;
769 x->len = 1; 964 x->len = 1;
770 spi_message_add_tail(x, m); 965 spi_message_add_tail(x, m);
@@ -774,14 +969,14 @@ static int __devinit ads7846_probe(struct spi_device *spi)
774 x->len = 2; 969 x->len = 2;
775 spi_message_add_tail(x, m); 970 spi_message_add_tail(x, m);
776 971
777 m->complete = ads7846_debounce; 972 m->complete = ads7846_rx_val;
778 m->context = ts; 973 m->context = ts;
779 974
780 m++; 975 m++;
781 spi_message_init(m); 976 spi_message_init(m);
782 977
783 x++; 978 x++;
784 ts->read_z2 = READ_Z2; 979 ts->read_z2 = READ_Z2(vref);
785 x->tx_buf = &ts->read_z2; 980 x->tx_buf = &ts->read_z2;
786 x->len = 1; 981 x->len = 1;
787 spi_message_add_tail(x, m); 982 spi_message_add_tail(x, m);
@@ -791,7 +986,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
791 x->len = 2; 986 x->len = 2;
792 spi_message_add_tail(x, m); 987 spi_message_add_tail(x, m);
793 988
794 m->complete = ads7846_debounce; 989 m->complete = ads7846_rx_val;
795 m->context = ts; 990 m->context = ts;
796 } 991 }
797 992
@@ -820,31 +1015,24 @@ static int __devinit ads7846_probe(struct spi_device *spi)
820 spi->dev.driver->name, ts)) { 1015 spi->dev.driver->name, ts)) {
821 dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq); 1016 dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);
822 err = -EBUSY; 1017 err = -EBUSY;
823 goto err_free_mem; 1018 goto err_cleanup_filter;
824 } 1019 }
825 1020
1021 err = ads784x_hwmon_register(spi, ts);
1022 if (err)
1023 goto err_free_irq;
1024
826 dev_info(&spi->dev, "touchscreen, irq %d\n", spi->irq); 1025 dev_info(&spi->dev, "touchscreen, irq %d\n", spi->irq);
827 1026
828 /* take a first sample, leaving nPENIRQ active; avoid 1027 /* take a first sample, leaving nPENIRQ active and vREF off; avoid
829 * the touchscreen, in case it's not connected. 1028 * the touchscreen, in case it's not connected.
830 */ 1029 */
831 (void) ads7846_read12_ser(&spi->dev, 1030 (void) ads7846_read12_ser(&spi->dev,
832 READ_12BIT_SER(vaux) | ADS_PD10_ALL_ON); 1031 READ_12BIT_SER(vaux) | ADS_PD10_ALL_ON);
833 1032
834 switch (ts->model) { 1033 err = sysfs_create_group(&spi->dev.kobj, &ads784x_attr_group);
835 case 7846:
836 ts->attr_group = &ads7846_attr_group;
837 break;
838 case 7845:
839 ts->attr_group = &ads7845_attr_group;
840 break;
841 default:
842 ts->attr_group = &ads7843_attr_group;
843 break;
844 }
845 err = sysfs_create_group(&spi->dev.kobj, ts->attr_group);
846 if (err) 1034 if (err)
847 goto err_free_irq; 1035 goto err_remove_hwmon;
848 1036
849 err = input_register_device(input_dev); 1037 err = input_register_device(input_dev);
850 if (err) 1038 if (err)
@@ -853,9 +1041,14 @@ static int __devinit ads7846_probe(struct spi_device *spi)
853 return 0; 1041 return 0;
854 1042
855 err_remove_attr_group: 1043 err_remove_attr_group:
856 sysfs_remove_group(&spi->dev.kobj, ts->attr_group); 1044 sysfs_remove_group(&spi->dev.kobj, &ads784x_attr_group);
1045 err_remove_hwmon:
1046 ads784x_hwmon_unregister(spi, ts);
857 err_free_irq: 1047 err_free_irq:
858 free_irq(spi->irq, ts); 1048 free_irq(spi->irq, ts);
1049 err_cleanup_filter:
1050 if (ts->filter_cleanup)
1051 ts->filter_cleanup(ts->filter_data);
859 err_free_mem: 1052 err_free_mem:
860 input_free_device(input_dev); 1053 input_free_device(input_dev);
861 kfree(ts); 1054 kfree(ts);
@@ -866,16 +1059,20 @@ static int __devexit ads7846_remove(struct spi_device *spi)
866{ 1059{
867 struct ads7846 *ts = dev_get_drvdata(&spi->dev); 1060 struct ads7846 *ts = dev_get_drvdata(&spi->dev);
868 1061
1062 ads784x_hwmon_unregister(spi, ts);
869 input_unregister_device(ts->input); 1063 input_unregister_device(ts->input);
870 1064
871 ads7846_suspend(spi, PMSG_SUSPEND); 1065 ads7846_suspend(spi, PMSG_SUSPEND);
872 1066
873 sysfs_remove_group(&spi->dev.kobj, ts->attr_group); 1067 sysfs_remove_group(&spi->dev.kobj, &ads784x_attr_group);
874 1068
875 free_irq(ts->spi->irq, ts); 1069 free_irq(ts->spi->irq, ts);
876 /* suspend left the IRQ disabled */ 1070 /* suspend left the IRQ disabled */
877 enable_irq(ts->spi->irq); 1071 enable_irq(ts->spi->irq);
878 1072
1073 if (ts->filter_cleanup)
1074 ts->filter_cleanup(ts->filter_data);
1075
879 kfree(ts); 1076 kfree(ts);
880 1077
881 dev_dbg(&spi->dev, "unregistered touchscreen\n"); 1078 dev_dbg(&spi->dev, "unregistered touchscreen\n");
diff --git a/drivers/input/tsdev.c b/drivers/input/tsdev.c
index a730c461227f..0300dca8591d 100644
--- a/drivers/input/tsdev.c
+++ b/drivers/input/tsdev.c
@@ -151,6 +151,10 @@ static int tsdev_open(struct inode *inode, struct file *file)
151 int i = iminor(inode) - TSDEV_MINOR_BASE; 151 int i = iminor(inode) - TSDEV_MINOR_BASE;
152 struct tsdev_list *list; 152 struct tsdev_list *list;
153 153
154 printk(KERN_WARNING "tsdev (compaq touchscreen emulation) is scheduled "
155 "for removal.\nSee Documentation/feature-removal-schedule.txt "
156 "for details.\n");
157
154 if (i >= TSDEV_MINORS || !tsdev_table[i & TSDEV_MINOR_MASK]) 158 if (i >= TSDEV_MINORS || !tsdev_table[i & TSDEV_MINOR_MASK])
155 return -ENODEV; 159 return -ENODEV;
156 160
diff --git a/drivers/usb/input/hid-ff.c b/drivers/usb/input/hid-ff.c
index 5d145058a5cb..bc7f8e6f8c97 100644
--- a/drivers/usb/input/hid-ff.c
+++ b/drivers/usb/input/hid-ff.c
@@ -57,6 +57,7 @@ static struct hid_ff_initializer inits[] = {
57 { 0x46d, 0xc283, hid_lgff_init }, /* Logitech Wingman Force 3d */ 57 { 0x46d, 0xc283, hid_lgff_init }, /* Logitech Wingman Force 3d */
58 { 0x46d, 0xc295, hid_lgff_init }, /* Logitech MOMO force wheel */ 58 { 0x46d, 0xc295, hid_lgff_init }, /* Logitech MOMO force wheel */
59 { 0x46d, 0xc219, hid_lgff_init }, /* Logitech Cordless rumble pad 2 */ 59 { 0x46d, 0xc219, hid_lgff_init }, /* Logitech Cordless rumble pad 2 */
60 { 0x46d, 0xca03, hid_lgff_init }, /* Logitech MOMO force wheel */
60#endif 61#endif
61#ifdef CONFIG_PANTHERLORD_FF 62#ifdef CONFIG_PANTHERLORD_FF
62 { 0x810, 0x0001, hid_plff_init }, 63 { 0x810, 0x0001, hid_plff_init },
diff --git a/drivers/usb/input/hid-lgff.c b/drivers/usb/input/hid-lgff.c
index 4f4fc3be192e..4df0968f852e 100644
--- a/drivers/usb/input/hid-lgff.c
+++ b/drivers/usb/input/hid-lgff.c
@@ -52,6 +52,7 @@ static const struct dev_type devices[] = {
52 { 0x046d, 0xc211, ff_rumble }, 52 { 0x046d, 0xc211, ff_rumble },
53 { 0x046d, 0xc219, ff_rumble }, 53 { 0x046d, 0xc219, ff_rumble },
54 { 0x046d, 0xc283, ff_joystick }, 54 { 0x046d, 0xc283, ff_joystick },
55 { 0x046d, 0xca03, ff_joystick },
55 { 0x0000, 0x0000, ff_joystick } 56 { 0x0000, 0x0000, ff_joystick }
56}; 57};
57 58
diff --git a/include/asm-arm/hardware/gpio_keys.h b/include/asm-arm/hardware/gpio_keys.h
new file mode 100644
index 000000000000..2b217c7b9312
--- /dev/null
+++ b/include/asm-arm/hardware/gpio_keys.h
@@ -0,0 +1,17 @@
1#ifndef _GPIO_KEYS_H
2#define _GPIO_KEYS_H
3
4struct gpio_keys_button {
5 /* Configuration parameters */
6 int keycode;
7 int gpio;
8 int active_low;
9 char *desc;
10};
11
12struct gpio_keys_platform_data {
13 struct gpio_keys_button *buttons;
14 int nbuttons;
15};
16
17#endif
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index adb3dafd33e9..3387e44dfd13 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -5,9 +5,17 @@
5 * 5 *
6 * It's OK if the min/max values are zero. 6 * It's OK if the min/max values are zero.
7 */ 7 */
8enum ads7846_filter {
9 ADS7846_FILTER_OK,
10 ADS7846_FILTER_REPEAT,
11 ADS7846_FILTER_IGNORE,
12};
13
8struct ads7846_platform_data { 14struct ads7846_platform_data {
9 u16 model; /* 7843, 7845, 7846. */ 15 u16 model; /* 7843, 7845, 7846. */
10 u16 vref_delay_usecs; /* 0 for external vref; etc */ 16 u16 vref_delay_usecs; /* 0 for external vref; etc */
17 int keep_vref_on:1; /* set to keep vref on for differential
18 * measurements as well */
11 u16 x_plate_ohms; 19 u16 x_plate_ohms;
12 u16 y_plate_ohms; 20 u16 y_plate_ohms;
13 21
@@ -21,5 +29,9 @@ struct ads7846_platform_data {
21 u16 debounce_rep; /* additional consecutive good readings 29 u16 debounce_rep; /* additional consecutive good readings
22 * required after the first two */ 30 * required after the first two */
23 int (*get_pendown_state)(void); 31 int (*get_pendown_state)(void);
32 int (*filter_init) (struct ads7846_platform_data *pdata,
33 void **filter_data);
34 int (*filter) (void *filter_data, int data_idx, int *val);
35 void (*filter_cleanup)(void *filter_data);
24}; 36};
25 37
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-15 11:53:05 -0500