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-rw-r--r--arch/arm/mach-tegra/include/mach/kbc.h61
-rw-r--r--drivers/input/keyboard/Kconfig10
-rw-r--r--drivers/input/keyboard/Makefile1
-rw-r--r--drivers/input/keyboard/gpio_keys.c6
-rw-r--r--drivers/input/keyboard/tegra-kbc.c727
-rw-r--r--drivers/input/keyboard/tnetv107x-keypad.c5
-rw-r--r--drivers/input/serio/ct82c710.c8
-rw-r--r--drivers/input/serio/serport.c24
-rw-r--r--drivers/input/sparse-keymap.c1
-rw-r--r--drivers/input/tablet/wacom_wac.c27
-rw-r--r--drivers/input/touchscreen/bu21013_ts.c39
-rw-r--r--drivers/input/touchscreen/tnetv107x-ts.c5
-rw-r--r--drivers/tty/sysrq.c2
-rw-r--r--include/linux/input/bu21013.h4
-rw-r--r--include/linux/sysrq.h3
-rw-r--r--kernel/sysctl.c3
16 files changed, 901 insertions, 25 deletions
diff --git a/arch/arm/mach-tegra/include/mach/kbc.h b/arch/arm/mach-tegra/include/mach/kbc.h
new file mode 100644
index 000000000000..66ad2760c621
--- /dev/null
+++ b/arch/arm/mach-tegra/include/mach/kbc.h
@@ -0,0 +1,61 @@
1/*
2 * Platform definitions for tegra-kbc keyboard input driver
3 *
4 * Copyright (c) 2010-2011, NVIDIA Corporation.
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 as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 */
20
21#ifndef ASMARM_ARCH_TEGRA_KBC_H
22#define ASMARM_ARCH_TEGRA_KBC_H
23
24#include <linux/types.h>
25#include <linux/input/matrix_keypad.h>
26
27#ifdef CONFIG_ARCH_TEGRA_2x_SOC
28#define KBC_MAX_GPIO 24
29#define KBC_MAX_KPENT 8
30#else
31#define KBC_MAX_GPIO 20
32#define KBC_MAX_KPENT 7
33#endif
34
35#define KBC_MAX_ROW 16
36#define KBC_MAX_COL 8
37#define KBC_MAX_KEY (KBC_MAX_ROW * KBC_MAX_COL)
38
39struct tegra_kbc_pin_cfg {
40 bool is_row;
41 unsigned char num;
42};
43
44struct tegra_kbc_wake_key {
45 u8 row:4;
46 u8 col:4;
47};
48
49struct tegra_kbc_platform_data {
50 unsigned int debounce_cnt;
51 unsigned int repeat_cnt;
52
53 unsigned int wake_cnt; /* 0:wake on any key >1:wake on wake_cfg */
54 const struct tegra_kbc_wake_key *wake_cfg;
55
56 struct tegra_kbc_pin_cfg pin_cfg[KBC_MAX_GPIO];
57 const struct matrix_keymap_data *keymap_data;
58
59 bool wakeup;
60};
61#endif
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 417507348bab..c7a92028f450 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -343,6 +343,16 @@ config KEYBOARD_NOMADIK
343 To compile this driver as a module, choose M here: the 343 To compile this driver as a module, choose M here: the
344 module will be called nmk-ske-keypad. 344 module will be called nmk-ske-keypad.
345 345
346config KEYBOARD_TEGRA
347 tristate "NVIDIA Tegra internal matrix keyboard controller support"
348 depends on ARCH_TEGRA
349 help
350 Say Y here if you want to use a matrix keyboard connected directly
351 to the internal keyboard controller on Tegra SoCs.
352
353 To compile this driver as a module, choose M here: the
354 module will be called tegra-kbc.
355
346config KEYBOARD_OPENCORES 356config KEYBOARD_OPENCORES
347 tristate "OpenCores Keyboard Controller" 357 tristate "OpenCores Keyboard Controller"
348 help 358 help
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 4e5571b72cda..468c627a2844 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_KEYBOARD_STMPE) += stmpe-keypad.o
42obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o 42obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o
43obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o 43obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o
44obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o 44obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o
45obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.o
45obj-$(CONFIG_KEYBOARD_TNETV107X) += tnetv107x-keypad.o 46obj-$(CONFIG_KEYBOARD_TNETV107X) += tnetv107x-keypad.o
46obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o 47obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o
47obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o 48obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 6069abe31e42..eb3006361ee4 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -322,7 +322,7 @@ static void gpio_keys_report_event(struct gpio_button_data *bdata)
322 struct gpio_keys_button *button = bdata->button; 322 struct gpio_keys_button *button = bdata->button;
323 struct input_dev *input = bdata->input; 323 struct input_dev *input = bdata->input;
324 unsigned int type = button->type ?: EV_KEY; 324 unsigned int type = button->type ?: EV_KEY;
325 int state = (gpio_get_value(button->gpio) ? 1 : 0) ^ button->active_low; 325 int state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^ button->active_low;
326 326
327 input_event(input, type, button->code, !!state); 327 input_event(input, type, button->code, !!state);
328 input_sync(input); 328 input_sync(input);
@@ -410,8 +410,8 @@ static int __devinit gpio_keys_setup_key(struct platform_device *pdev,
410 if (!button->can_disable) 410 if (!button->can_disable)
411 irqflags |= IRQF_SHARED; 411 irqflags |= IRQF_SHARED;
412 412
413 error = request_irq(irq, gpio_keys_isr, irqflags, desc, bdata); 413 error = request_any_context_irq(irq, gpio_keys_isr, irqflags, desc, bdata);
414 if (error) { 414 if (error < 0) {
415 dev_err(dev, "Unable to claim irq %d; error %d\n", 415 dev_err(dev, "Unable to claim irq %d; error %d\n",
416 irq, error); 416 irq, error);
417 goto fail3; 417 goto fail3;
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
new file mode 100644
index 000000000000..939476659ad6
--- /dev/null
+++ b/drivers/input/keyboard/tegra-kbc.c
@@ -0,0 +1,727 @@
1/*
2 * Keyboard class input driver for the NVIDIA Tegra SoC internal matrix
3 * keyboard controller
4 *
5 * Copyright (c) 2009-2011, NVIDIA Corporation.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 */
21
22#include <linux/module.h>
23#include <linux/input.h>
24#include <linux/platform_device.h>
25#include <linux/delay.h>
26#include <linux/io.h>
27#include <linux/interrupt.h>
28#include <linux/clk.h>
29#include <linux/slab.h>
30#include <mach/clk.h>
31#include <mach/kbc.h>
32
33#define KBC_MAX_DEBOUNCE_CNT 0x3ffu
34
35/* KBC row scan time and delay for beginning the row scan. */
36#define KBC_ROW_SCAN_TIME 16
37#define KBC_ROW_SCAN_DLY 5
38
39/* KBC uses a 32KHz clock so a cycle = 1/32Khz */
40#define KBC_CYCLE_USEC 32
41
42/* KBC Registers */
43
44/* KBC Control Register */
45#define KBC_CONTROL_0 0x0
46#define KBC_FIFO_TH_CNT_SHIFT(cnt) (cnt << 14)
47#define KBC_DEBOUNCE_CNT_SHIFT(cnt) (cnt << 4)
48#define KBC_CONTROL_FIFO_CNT_INT_EN (1 << 3)
49#define KBC_CONTROL_KBC_EN (1 << 0)
50
51/* KBC Interrupt Register */
52#define KBC_INT_0 0x4
53#define KBC_INT_FIFO_CNT_INT_STATUS (1 << 2)
54
55#define KBC_ROW_CFG0_0 0x8
56#define KBC_COL_CFG0_0 0x18
57#define KBC_INIT_DLY_0 0x28
58#define KBC_RPT_DLY_0 0x2c
59#define KBC_KP_ENT0_0 0x30
60#define KBC_KP_ENT1_0 0x34
61#define KBC_ROW0_MASK_0 0x38
62
63#define KBC_ROW_SHIFT 3
64
65struct tegra_kbc {
66 void __iomem *mmio;
67 struct input_dev *idev;
68 unsigned int irq;
69 unsigned int wake_enable_rows;
70 unsigned int wake_enable_cols;
71 spinlock_t lock;
72 unsigned int repoll_dly;
73 unsigned long cp_dly_jiffies;
74 const struct tegra_kbc_platform_data *pdata;
75 unsigned short keycode[KBC_MAX_KEY];
76 unsigned short current_keys[KBC_MAX_KPENT];
77 unsigned int num_pressed_keys;
78 struct timer_list timer;
79 struct clk *clk;
80};
81
82static const u32 tegra_kbc_default_keymap[] = {
83 KEY(0, 2, KEY_W),
84 KEY(0, 3, KEY_S),
85 KEY(0, 4, KEY_A),
86 KEY(0, 5, KEY_Z),
87 KEY(0, 7, KEY_FN),
88
89 KEY(1, 7, KEY_MENU),
90
91 KEY(2, 6, KEY_RIGHTALT),
92 KEY(2, 7, KEY_LEFTALT),
93
94 KEY(3, 0, KEY_5),
95 KEY(3, 1, KEY_4),
96 KEY(3, 2, KEY_R),
97 KEY(3, 3, KEY_E),
98 KEY(3, 4, KEY_F),
99 KEY(3, 5, KEY_D),
100 KEY(3, 6, KEY_X),
101
102 KEY(4, 0, KEY_7),
103 KEY(4, 1, KEY_6),
104 KEY(4, 2, KEY_T),
105 KEY(4, 3, KEY_H),
106 KEY(4, 4, KEY_G),
107 KEY(4, 5, KEY_V),
108 KEY(4, 6, KEY_C),
109 KEY(4, 7, KEY_SPACE),
110
111 KEY(5, 0, KEY_9),
112 KEY(5, 1, KEY_8),
113 KEY(5, 2, KEY_U),
114 KEY(5, 3, KEY_Y),
115 KEY(5, 4, KEY_J),
116 KEY(5, 5, KEY_N),
117 KEY(5, 6, KEY_B),
118 KEY(5, 7, KEY_BACKSLASH),
119
120 KEY(6, 0, KEY_MINUS),
121 KEY(6, 1, KEY_0),
122 KEY(6, 2, KEY_O),
123 KEY(6, 3, KEY_I),
124 KEY(6, 4, KEY_L),
125 KEY(6, 5, KEY_K),
126 KEY(6, 6, KEY_COMMA),
127 KEY(6, 7, KEY_M),
128
129 KEY(7, 1, KEY_EQUAL),
130 KEY(7, 2, KEY_RIGHTBRACE),
131 KEY(7, 3, KEY_ENTER),
132 KEY(7, 7, KEY_MENU),
133
134 KEY(8, 4, KEY_RIGHTSHIFT),
135 KEY(8, 5, KEY_LEFTSHIFT),
136
137 KEY(9, 5, KEY_RIGHTCTRL),
138 KEY(9, 7, KEY_LEFTCTRL),
139
140 KEY(11, 0, KEY_LEFTBRACE),
141 KEY(11, 1, KEY_P),
142 KEY(11, 2, KEY_APOSTROPHE),
143 KEY(11, 3, KEY_SEMICOLON),
144 KEY(11, 4, KEY_SLASH),
145 KEY(11, 5, KEY_DOT),
146
147 KEY(12, 0, KEY_F10),
148 KEY(12, 1, KEY_F9),
149 KEY(12, 2, KEY_BACKSPACE),
150 KEY(12, 3, KEY_3),
151 KEY(12, 4, KEY_2),
152 KEY(12, 5, KEY_UP),
153 KEY(12, 6, KEY_PRINT),
154 KEY(12, 7, KEY_PAUSE),
155
156 KEY(13, 0, KEY_INSERT),
157 KEY(13, 1, KEY_DELETE),
158 KEY(13, 3, KEY_PAGEUP),
159 KEY(13, 4, KEY_PAGEDOWN),
160 KEY(13, 5, KEY_RIGHT),
161 KEY(13, 6, KEY_DOWN),
162 KEY(13, 7, KEY_LEFT),
163
164 KEY(14, 0, KEY_F11),
165 KEY(14, 1, KEY_F12),
166 KEY(14, 2, KEY_F8),
167 KEY(14, 3, KEY_Q),
168 KEY(14, 4, KEY_F4),
169 KEY(14, 5, KEY_F3),
170 KEY(14, 6, KEY_1),
171 KEY(14, 7, KEY_F7),
172
173 KEY(15, 0, KEY_ESC),
174 KEY(15, 1, KEY_GRAVE),
175 KEY(15, 2, KEY_F5),
176 KEY(15, 3, KEY_TAB),
177 KEY(15, 4, KEY_F1),
178 KEY(15, 5, KEY_F2),
179 KEY(15, 6, KEY_CAPSLOCK),
180 KEY(15, 7, KEY_F6),
181};
182
183static const struct matrix_keymap_data tegra_kbc_default_keymap_data = {
184 .keymap = tegra_kbc_default_keymap,
185 .keymap_size = ARRAY_SIZE(tegra_kbc_default_keymap),
186};
187
188static void tegra_kbc_report_released_keys(struct input_dev *input,
189 unsigned short old_keycodes[],
190 unsigned int old_num_keys,
191 unsigned short new_keycodes[],
192 unsigned int new_num_keys)
193{
194 unsigned int i, j;
195
196 for (i = 0; i < old_num_keys; i++) {
197 for (j = 0; j < new_num_keys; j++)
198 if (old_keycodes[i] == new_keycodes[j])
199 break;
200
201 if (j == new_num_keys)
202 input_report_key(input, old_keycodes[i], 0);
203 }
204}
205
206static void tegra_kbc_report_pressed_keys(struct input_dev *input,
207 unsigned char scancodes[],
208 unsigned short keycodes[],
209 unsigned int num_pressed_keys)
210{
211 unsigned int i;
212
213 for (i = 0; i < num_pressed_keys; i++) {
214 input_event(input, EV_MSC, MSC_SCAN, scancodes[i]);
215 input_report_key(input, keycodes[i], 1);
216 }
217}
218
219static void tegra_kbc_report_keys(struct tegra_kbc *kbc)
220{
221 unsigned char scancodes[KBC_MAX_KPENT];
222 unsigned short keycodes[KBC_MAX_KPENT];
223 u32 val = 0;
224 unsigned int i;
225 unsigned int num_down = 0;
226 unsigned long flags;
227
228 spin_lock_irqsave(&kbc->lock, flags);
229 for (i = 0; i < KBC_MAX_KPENT; i++) {
230 if ((i % 4) == 0)
231 val = readl(kbc->mmio + KBC_KP_ENT0_0 + i);
232
233 if (val & 0x80) {
234 unsigned int col = val & 0x07;
235 unsigned int row = (val >> 3) & 0x0f;
236 unsigned char scancode =
237 MATRIX_SCAN_CODE(row, col, KBC_ROW_SHIFT);
238
239 scancodes[num_down] = scancode;
240 keycodes[num_down++] = kbc->keycode[scancode];
241 }
242
243 val >>= 8;
244 }
245 spin_unlock_irqrestore(&kbc->lock, flags);
246
247 tegra_kbc_report_released_keys(kbc->idev,
248 kbc->current_keys, kbc->num_pressed_keys,
249 keycodes, num_down);
250 tegra_kbc_report_pressed_keys(kbc->idev, scancodes, keycodes, num_down);
251 input_sync(kbc->idev);
252
253 memcpy(kbc->current_keys, keycodes, sizeof(kbc->current_keys));
254 kbc->num_pressed_keys = num_down;
255}
256
257static void tegra_kbc_keypress_timer(unsigned long data)
258{
259 struct tegra_kbc *kbc = (struct tegra_kbc *)data;
260 unsigned long flags;
261 u32 val;
262 unsigned int i;
263
264 val = (readl(kbc->mmio + KBC_INT_0) >> 4) & 0xf;
265 if (val) {
266 unsigned long dly;
267
268 tegra_kbc_report_keys(kbc);
269
270 /*
271 * If more than one keys are pressed we need not wait
272 * for the repoll delay.
273 */
274 dly = (val == 1) ? kbc->repoll_dly : 1;
275 mod_timer(&kbc->timer, jiffies + msecs_to_jiffies(dly));
276 } else {
277 /* Release any pressed keys and exit the polling loop */
278 for (i = 0; i < kbc->num_pressed_keys; i++)
279 input_report_key(kbc->idev, kbc->current_keys[i], 0);
280 input_sync(kbc->idev);
281
282 kbc->num_pressed_keys = 0;
283
284 /* All keys are released so enable the keypress interrupt */
285 spin_lock_irqsave(&kbc->lock, flags);
286 val = readl(kbc->mmio + KBC_CONTROL_0);
287 val |= KBC_CONTROL_FIFO_CNT_INT_EN;
288 writel(val, kbc->mmio + KBC_CONTROL_0);
289 spin_unlock_irqrestore(&kbc->lock, flags);
290 }
291}
292
293static irqreturn_t tegra_kbc_isr(int irq, void *args)
294{
295 struct tegra_kbc *kbc = args;
296 u32 val, ctl;
297
298 /*
299 * Until all keys are released, defer further processing to
300 * the polling loop in tegra_kbc_keypress_timer
301 */
302 ctl = readl(kbc->mmio + KBC_CONTROL_0);
303 ctl &= ~KBC_CONTROL_FIFO_CNT_INT_EN;
304 writel(ctl, kbc->mmio + KBC_CONTROL_0);
305
306 /*
307 * Quickly bail out & reenable interrupts if the fifo threshold
308 * count interrupt wasn't the interrupt source
309 */
310 val = readl(kbc->mmio + KBC_INT_0);
311 writel(val, kbc->mmio + KBC_INT_0);
312
313 if (val & KBC_INT_FIFO_CNT_INT_STATUS) {
314 /*
315 * Schedule timer to run when hardware is in continuous
316 * polling mode.
317 */
318 mod_timer(&kbc->timer, jiffies + kbc->cp_dly_jiffies);
319 } else {
320 ctl |= KBC_CONTROL_FIFO_CNT_INT_EN;
321 writel(ctl, kbc->mmio + KBC_CONTROL_0);
322 }
323
324 return IRQ_HANDLED;
325}
326
327static void tegra_kbc_setup_wakekeys(struct tegra_kbc *kbc, bool filter)
328{
329 const struct tegra_kbc_platform_data *pdata = kbc->pdata;
330 int i;
331 unsigned int rst_val;
332
333 BUG_ON(pdata->wake_cnt > KBC_MAX_KEY);
334 rst_val = (filter && pdata->wake_cnt) ? ~0 : 0;
335
336 for (i = 0; i < KBC_MAX_ROW; i++)
337 writel(rst_val, kbc->mmio + KBC_ROW0_MASK_0 + i * 4);
338
339 if (filter) {
340 for (i = 0; i < pdata->wake_cnt; i++) {
341 u32 val, addr;
342 addr = pdata->wake_cfg[i].row * 4 + KBC_ROW0_MASK_0;
343 val = readl(kbc->mmio + addr);
344 val &= ~(1 << pdata->wake_cfg[i].col);
345 writel(val, kbc->mmio + addr);
346 }
347 }
348}
349
350static void tegra_kbc_config_pins(struct tegra_kbc *kbc)
351{
352 const struct tegra_kbc_platform_data *pdata = kbc->pdata;
353 int i;
354
355 for (i = 0; i < KBC_MAX_GPIO; i++) {
356 u32 r_shft = 5 * (i % 6);
357 u32 c_shft = 4 * (i % 8);
358 u32 r_mask = 0x1f << r_shift;
359 u32 c_mask = 0x0f << c_shift;
360 u32 r_offs = (i / 6) * 4 + KBC_ROW_CFG0_0;
361 u32 c_offs = (i / 8) * 4 + KBC_COL_CFG0_0;
362 u32 row_cfg = readl(kbc->mmio + r_offs);
363 u32 col_cfg = readl(kbc->mmio + c_offs);
364
365 row_cfg &= ~r_mask;
366 col_cfg &= ~c_mask;
367
368 if (pdata->pin_cfg[i].is_row)
369 row_cfg |= ((pdata->pin_cfg[i].num << 1) | 1) << r_shft;
370 else
371 col_cfg |= ((pdata->pin_cfg[i].num << 1) | 1) << c_shft;
372
373 writel(row_cfg, kbc->mmio + r_offs);
374 writel(col_cfg, kbc->mmio + c_offs);
375 }
376}
377
378static int tegra_kbc_start(struct tegra_kbc *kbc)
379{
380 const struct tegra_kbc_platform_data *pdata = kbc->pdata;
381 unsigned long flags;
382 unsigned int debounce_cnt;
383 u32 val = 0;
384
385 clk_enable(kbc->clk);
386
387 /* Reset the KBC controller to clear all previous status.*/
388 tegra_periph_reset_assert(kbc->clk);
389 udelay(100);
390 tegra_periph_reset_deassert(kbc->clk);
391 udelay(100);
392
393 tegra_kbc_config_pins(kbc);
394 tegra_kbc_setup_wakekeys(kbc, false);
395
396 writel(pdata->repeat_cnt, kbc->mmio + KBC_RPT_DLY_0);
397
398 /* Keyboard debounce count is maximum of 12 bits. */
399 debounce_cnt = min(pdata->debounce_cnt, KBC_MAX_DEBOUNCE_CNT);
400 val = KBC_DEBOUNCE_CNT_SHIFT(debounce_cnt);
401 val |= KBC_FIFO_TH_CNT_SHIFT(1); /* set fifo interrupt threshold to 1 */
402 val |= KBC_CONTROL_FIFO_CNT_INT_EN; /* interrupt on FIFO threshold */
403 val |= KBC_CONTROL_KBC_EN; /* enable */
404 writel(val, kbc->mmio + KBC_CONTROL_0);
405
406 /*
407 * Compute the delay(ns) from interrupt mode to continuous polling
408 * mode so the timer routine is scheduled appropriately.
409 */
410 val = readl(kbc->mmio + KBC_INIT_DLY_0);
411 kbc->cp_dly_jiffies = usecs_to_jiffies((val & 0xfffff) * 32);
412
413 kbc->num_pressed_keys = 0;
414
415 /*
416 * Atomically clear out any remaining entries in the key FIFO
417 * and enable keyboard interrupts.
418 */
419 spin_lock_irqsave(&kbc->lock, flags);
420 while (1) {
421 val = readl(kbc->mmio + KBC_INT_0);
422 val >>= 4;
423 if (!val)
424 break;
425
426 val = readl(kbc->mmio + KBC_KP_ENT0_0);
427 val = readl(kbc->mmio + KBC_KP_ENT1_0);
428 }
429 writel(0x7, kbc->mmio + KBC_INT_0);
430 spin_unlock_irqrestore(&kbc->lock, flags);
431
432 enable_irq(kbc->irq);
433
434 return 0;
435}
436
437static void tegra_kbc_stop(struct tegra_kbc *kbc)
438{
439 unsigned long flags;
440 u32 val;
441
442 spin_lock_irqsave(&kbc->lock, flags);
443 val = readl(kbc->mmio + KBC_CONTROL_0);
444 val &= ~1;
445 writel(val, kbc->mmio + KBC_CONTROL_0);
446 spin_unlock_irqrestore(&kbc->lock, flags);
447
448 disable_irq(kbc->irq);
449 del_timer_sync(&kbc->timer);
450
451 clk_disable(kbc->clk);
452}
453
454static int tegra_kbc_open(struct input_dev *dev)
455{
456 struct tegra_kbc *kbc = input_get_drvdata(dev);
457
458 return tegra_kbc_start(kbc);
459}
460
461static void tegra_kbc_close(struct input_dev *dev)
462{
463 struct tegra_kbc *kbc = input_get_drvdata(dev);
464
465 return tegra_kbc_stop(kbc);
466}
467
468static bool __devinit
469tegra_kbc_check_pin_cfg(const struct tegra_kbc_platform_data *pdata,
470 struct device *dev, unsigned int *num_rows)
471{
472 int i;
473
474 *num_rows = 0;
475
476 for (i = 0; i < KBC_MAX_GPIO; i++) {
477 const struct tegra_kbc_pin_cfg *pin_cfg = &pdata->pin_cfg[i];
478
479 if (pin_cfg->is_row) {
480 if (pin_cfg->num >= KBC_MAX_ROW) {
481 dev_err(dev,
482 "pin_cfg[%d]: invalid row number %d\n",
483 i, pin_cfg->num);
484 return false;
485 }
486 (*num_rows)++;
487 } else {
488 if (pin_cfg->num >= KBC_MAX_COL) {
489 dev_err(dev,
490 "pin_cfg[%d]: invalid column number %d\n",
491 i, pin_cfg->num);
492 return false;
493 }
494 }
495 }
496
497 return true;
498}
499
500static int __devinit tegra_kbc_probe(struct platform_device *pdev)
501{
502 const struct tegra_kbc_platform_data *pdata = pdev->dev.platform_data;
503 const struct matrix_keymap_data *keymap_data;
504 struct tegra_kbc *kbc;
505 struct input_dev *input_dev;
506 struct resource *res;
507 int irq;
508 int err;
509 int i;
510 int num_rows = 0;
511 unsigned int debounce_cnt;
512 unsigned int scan_time_rows;
513
514 if (!pdata)
515 return -EINVAL;
516
517 if (!tegra_kbc_check_pin_cfg(pdata, &pdev->dev, &num_rows))
518 return -EINVAL;
519
520 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
521 if (!res) {
522 dev_err(&pdev->dev, "failed to get I/O memory\n");
523 return -ENXIO;
524 }
525
526 irq = platform_get_irq(pdev, 0);
527 if (irq < 0) {
528 dev_err(&pdev->dev, "failed to get keyboard IRQ\n");
529 return -ENXIO;
530 }
531
532 kbc = kzalloc(sizeof(*kbc), GFP_KERNEL);
533 input_dev = input_allocate_device();
534 if (!kbc || !input_dev) {
535 err = -ENOMEM;
536 goto err_free_mem;
537 }
538
539 kbc->pdata = pdata;
540 kbc->idev = input_dev;
541 kbc->irq = irq;
542 spin_lock_init(&kbc->lock);
543 setup_timer(&kbc->timer, tegra_kbc_keypress_timer, (unsigned long)kbc);
544
545 res = request_mem_region(res->start, resource_size(res), pdev->name);
546 if (!res) {
547 dev_err(&pdev->dev, "failed to request I/O memory\n");
548 err = -EBUSY;
549 goto err_free_mem;
550 }
551
552 kbc->mmio = ioremap(res->start, resource_size(res));
553 if (!kbc->mmio) {
554 dev_err(&pdev->dev, "failed to remap I/O memory\n");
555 err = -ENXIO;
556 goto err_free_mem_region;
557 }
558
559 kbc->clk = clk_get(&pdev->dev, NULL);
560 if (IS_ERR(kbc->clk)) {
561 dev_err(&pdev->dev, "failed to get keyboard clock\n");
562 err = PTR_ERR(kbc->clk);
563 goto err_iounmap;
564 }
565
566 kbc->wake_enable_rows = 0;
567 kbc->wake_enable_cols = 0;
568 for (i = 0; i < pdata->wake_cnt; i++) {
569 kbc->wake_enable_rows |= (1 << pdata->wake_cfg[i].row);
570 kbc->wake_enable_cols |= (1 << pdata->wake_cfg[i].col);
571 }
572
573 /*
574 * The time delay between two consecutive reads of the FIFO is
575 * the sum of the repeat time and the time taken for scanning
576 * the rows. There is an additional delay before the row scanning
577 * starts. The repoll delay is computed in milliseconds.
578 */
579 debounce_cnt = min(pdata->debounce_cnt, KBC_MAX_DEBOUNCE_CNT);
580 scan_time_rows = (KBC_ROW_SCAN_TIME + debounce_cnt) * num_rows;
581 kbc->repoll_dly = KBC_ROW_SCAN_DLY + scan_time_rows + pdata->repeat_cnt;
582 kbc->repoll_dly = ((kbc->repoll_dly * KBC_CYCLE_USEC) + 999) / 1000;
583
584 input_dev->name = pdev->name;
585 input_dev->id.bustype = BUS_HOST;
586 input_dev->dev.parent = &pdev->dev;
587 input_dev->open = tegra_kbc_open;
588 input_dev->close = tegra_kbc_close;
589
590 input_set_drvdata(input_dev, kbc);
591
592 input_dev->evbit[0] = BIT_MASK(EV_KEY);
593 input_set_capability(input_dev, EV_MSC, MSC_SCAN);
594
595 input_dev->keycode = kbc->keycode;
596 input_dev->keycodesize = sizeof(kbc->keycode[0]);
597 input_dev->keycodemax = ARRAY_SIZE(kbc->keycode);
598
599 keymap_data = pdata->keymap_data ?: &tegra_kbc_default_keymap_data;
600 matrix_keypad_build_keymap(keymap_data, KBC_ROW_SHIFT,
601 input_dev->keycode, input_dev->keybit);
602
603 err = request_irq(kbc->irq, tegra_kbc_isr, IRQF_TRIGGER_HIGH,
604 pdev->name, kbc);
605 if (err) {
606 dev_err(&pdev->dev, "failed to request keyboard IRQ\n");
607 goto err_put_clk;
608 }
609
610 disable_irq(kbc->irq);
611
612 err = input_register_device(kbc->idev);
613 if (err) {
614 dev_err(&pdev->dev, "failed to register input device\n");
615 goto err_free_irq;
616 }
617
618 platform_set_drvdata(pdev, kbc);
619 device_init_wakeup(&pdev->dev, pdata->wakeup);
620
621 return 0;
622
623err_free_irq:
624 free_irq(kbc->irq, pdev);
625err_put_clk:
626 clk_put(kbc->clk);
627err_iounmap:
628 iounmap(kbc->mmio);
629err_free_mem_region:
630 release_mem_region(res->start, resource_size(res));
631err_free_mem:
632 input_free_device(kbc->idev);
633 kfree(kbc);
634
635 return err;
636}
637
638static int __devexit tegra_kbc_remove(struct platform_device *pdev)
639{
640 struct tegra_kbc *kbc = platform_get_drvdata(pdev);
641 struct resource *res;
642
643 free_irq(kbc->irq, pdev);
644 clk_put(kbc->clk);
645
646 input_unregister_device(kbc->idev);
647 iounmap(kbc->mmio);
648 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
649 release_mem_region(res->start, resource_size(res));
650
651 kfree(kbc);
652
653 platform_set_drvdata(pdev, NULL);
654
655 return 0;
656}
657
658#ifdef CONFIG_PM_SLEEP
659static int tegra_kbc_suspend(struct device *dev)
660{
661 struct platform_device *pdev = to_platform_device(dev);
662 struct tegra_kbc *kbc = platform_get_drvdata(pdev);
663
664 if (device_may_wakeup(&pdev->dev)) {
665 tegra_kbc_setup_wakekeys(kbc, true);
666 enable_irq_wake(kbc->irq);
667 /* Forcefully clear the interrupt status */
668 writel(0x7, kbc->mmio + KBC_INT_0);
669 msleep(30);
670 } else {
671 mutex_lock(&kbc->idev->mutex);
672 if (kbc->idev->users)
673 tegra_kbc_stop(kbc);
674 mutex_unlock(&kbc->idev->mutex);
675 }
676
677 return 0;
678}
679
680static int tegra_kbc_resume(struct device *dev)
681{
682 struct platform_device *pdev = to_platform_device(dev);
683 struct tegra_kbc *kbc = platform_get_drvdata(pdev);
684 int err = 0;
685
686 if (device_may_wakeup(&pdev->dev)) {
687 disable_irq_wake(kbc->irq);
688 tegra_kbc_setup_wakekeys(kbc, false);
689 } else {
690 mutex_lock(&kbc->idev->mutex);
691 if (kbc->idev->users)
692 err = tegra_kbc_start(kbc);
693 mutex_unlock(&kbc->idev->mutex);
694 }
695
696 return err;
697}
698#endif
699
700static SIMPLE_DEV_PM_OPS(tegra_kbc_pm_ops, tegra_kbc_suspend, tegra_kbc_resume);
701
702static struct platform_driver tegra_kbc_driver = {
703 .probe = tegra_kbc_probe,
704 .remove = __devexit_p(tegra_kbc_remove),
705 .driver = {
706 .name = "tegra-kbc",
707 .owner = THIS_MODULE,
708 .pm = &tegra_kbc_pm_ops,
709 },
710};
711
712static void __exit tegra_kbc_exit(void)
713{
714 platform_driver_unregister(&tegra_kbc_driver);
715}
716module_exit(tegra_kbc_exit);
717
718static int __init tegra_kbc_init(void)
719{
720 return platform_driver_register(&tegra_kbc_driver);
721}
722module_init(tegra_kbc_init);
723
724MODULE_LICENSE("GPL");
725MODULE_AUTHOR("Rakesh Iyer <riyer@nvidia.com>");
726MODULE_DESCRIPTION("Tegra matrix keyboard controller driver");
727MODULE_ALIAS("platform:tegra-kbc");
diff --git a/drivers/input/keyboard/tnetv107x-keypad.c b/drivers/input/keyboard/tnetv107x-keypad.c
index b4a81ebfab92..c8f097a15d89 100644
--- a/drivers/input/keyboard/tnetv107x-keypad.c
+++ b/drivers/input/keyboard/tnetv107x-keypad.c
@@ -14,6 +14,7 @@
14 */ 14 */
15 15
16#include <linux/kernel.h> 16#include <linux/kernel.h>
17#include <linux/err.h>
17#include <linux/errno.h> 18#include <linux/errno.h>
18#include <linux/input.h> 19#include <linux/input.h>
19#include <linux/platform_device.h> 20#include <linux/platform_device.h>
@@ -219,9 +220,9 @@ static int __devinit keypad_probe(struct platform_device *pdev)
219 } 220 }
220 221
221 kp->clk = clk_get(dev, NULL); 222 kp->clk = clk_get(dev, NULL);
222 if (!kp->clk) { 223 if (IS_ERR(kp->clk)) {
223 dev_err(dev, "cannot claim device clock\n"); 224 dev_err(dev, "cannot claim device clock\n");
224 error = -EINVAL; 225 error = PTR_ERR(kp->clk);
225 goto error_clk; 226 goto error_clk;
226 } 227 }
227 228
diff --git a/drivers/input/serio/ct82c710.c b/drivers/input/serio/ct82c710.c
index 448c7724beb9..852816567241 100644
--- a/drivers/input/serio/ct82c710.c
+++ b/drivers/input/serio/ct82c710.c
@@ -111,9 +111,11 @@ static void ct82c710_close(struct serio *serio)
111static int ct82c710_open(struct serio *serio) 111static int ct82c710_open(struct serio *serio)
112{ 112{
113 unsigned char status; 113 unsigned char status;
114 int err;
114 115
115 if (request_irq(CT82C710_IRQ, ct82c710_interrupt, 0, "ct82c710", NULL)) 116 err = request_irq(CT82C710_IRQ, ct82c710_interrupt, 0, "ct82c710", NULL);
116 return -1; 117 if (err)
118 return err;
117 119
118 status = inb_p(CT82C710_STATUS); 120 status = inb_p(CT82C710_STATUS);
119 121
@@ -131,7 +133,7 @@ static int ct82c710_open(struct serio *serio)
131 status &= ~(CT82C710_ENABLE | CT82C710_INTS_ON); 133 status &= ~(CT82C710_ENABLE | CT82C710_INTS_ON);
132 outb_p(status, CT82C710_STATUS); 134 outb_p(status, CT82C710_STATUS);
133 free_irq(CT82C710_IRQ, NULL); 135 free_irq(CT82C710_IRQ, NULL);
134 return -1; 136 return -EBUSY;
135 } 137 }
136 138
137 return 0; 139 return 0;
diff --git a/drivers/input/serio/serport.c b/drivers/input/serio/serport.c
index 6e362de3f412..8755f5f3ad37 100644
--- a/drivers/input/serio/serport.c
+++ b/drivers/input/serio/serport.c
@@ -116,14 +116,15 @@ static void serport_ldisc_close(struct tty_struct *tty)
116 116
117/* 117/*
118 * serport_ldisc_receive() is called by the low level tty driver when characters 118 * serport_ldisc_receive() is called by the low level tty driver when characters
119 * are ready for us. We forward the characters, one by one to the 'interrupt' 119 * are ready for us. We forward the characters and flags, one by one to the
120 * routine. 120 * 'interrupt' routine.
121 */ 121 */
122 122
123static void serport_ldisc_receive(struct tty_struct *tty, const unsigned char *cp, char *fp, int count) 123static void serport_ldisc_receive(struct tty_struct *tty, const unsigned char *cp, char *fp, int count)
124{ 124{
125 struct serport *serport = (struct serport*) tty->disc_data; 125 struct serport *serport = (struct serport*) tty->disc_data;
126 unsigned long flags; 126 unsigned long flags;
127 unsigned int ch_flags;
127 int i; 128 int i;
128 129
129 spin_lock_irqsave(&serport->lock, flags); 130 spin_lock_irqsave(&serport->lock, flags);
@@ -131,8 +132,23 @@ static void serport_ldisc_receive(struct tty_struct *tty, const unsigned char *c
131 if (!test_bit(SERPORT_ACTIVE, &serport->flags)) 132 if (!test_bit(SERPORT_ACTIVE, &serport->flags))
132 goto out; 133 goto out;
133 134
134 for (i = 0; i < count; i++) 135 for (i = 0; i < count; i++) {
135 serio_interrupt(serport->serio, cp[i], 0); 136 switch (fp[i]) {
137 case TTY_FRAME:
138 ch_flags = SERIO_FRAME;
139 break;
140
141 case TTY_PARITY:
142 ch_flags = SERIO_PARITY;
143 break;
144
145 default:
146 ch_flags = 0;
147 break;
148 }
149
150 serio_interrupt(serport->serio, cp[i], ch_flags);
151 }
136 152
137out: 153out:
138 spin_unlock_irqrestore(&serport->lock, flags); 154 spin_unlock_irqrestore(&serport->lock, flags);
diff --git a/drivers/input/sparse-keymap.c b/drivers/input/sparse-keymap.c
index a29a7812bd46..7729e547ba65 100644
--- a/drivers/input/sparse-keymap.c
+++ b/drivers/input/sparse-keymap.c
@@ -201,6 +201,7 @@ int sparse_keymap_setup(struct input_dev *dev,
201 break; 201 break;
202 202
203 case KE_SW: 203 case KE_SW:
204 case KE_VSW:
204 __set_bit(EV_SW, dev->evbit); 205 __set_bit(EV_SW, dev->evbit);
205 __set_bit(entry->sw.code, dev->swbit); 206 __set_bit(entry->sw.code, dev->swbit);
206 break; 207 break;
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 518782999fea..367fa82a607e 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -1101,6 +1101,13 @@ void wacom_setup_device_quirks(struct wacom_features *features)
1101 } 1101 }
1102} 1102}
1103 1103
1104static unsigned int wacom_calculate_touch_res(unsigned int logical_max,
1105 unsigned int physical_max)
1106{
1107 /* Touch physical dimensions are in 100th of mm */
1108 return (logical_max * 100) / physical_max;
1109}
1110
1104void wacom_setup_input_capabilities(struct input_dev *input_dev, 1111void wacom_setup_input_capabilities(struct input_dev *input_dev,
1105 struct wacom_wac *wacom_wac) 1112 struct wacom_wac *wacom_wac)
1106{ 1113{
@@ -1228,8 +1235,12 @@ void wacom_setup_input_capabilities(struct input_dev *input_dev,
1228 case TABLETPC: 1235 case TABLETPC:
1229 if (features->device_type == BTN_TOOL_DOUBLETAP || 1236 if (features->device_type == BTN_TOOL_DOUBLETAP ||
1230 features->device_type == BTN_TOOL_TRIPLETAP) { 1237 features->device_type == BTN_TOOL_TRIPLETAP) {
1231 input_set_abs_params(input_dev, ABS_RX, 0, features->x_phy, 0, 0); 1238 input_abs_set_res(input_dev, ABS_X,
1232 input_set_abs_params(input_dev, ABS_RY, 0, features->y_phy, 0, 0); 1239 wacom_calculate_touch_res(features->x_max,
1240 features->x_phy));
1241 input_abs_set_res(input_dev, ABS_Y,
1242 wacom_calculate_touch_res(features->y_max,
1243 features->y_phy));
1233 __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); 1244 __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
1234 } 1245 }
1235 1246
@@ -1272,6 +1283,12 @@ void wacom_setup_input_capabilities(struct input_dev *input_dev,
1272 input_set_abs_params(input_dev, ABS_MT_PRESSURE, 1283 input_set_abs_params(input_dev, ABS_MT_PRESSURE,
1273 0, features->pressure_max, 1284 0, features->pressure_max,
1274 features->pressure_fuzz, 0); 1285 features->pressure_fuzz, 0);
1286 input_abs_set_res(input_dev, ABS_X,
1287 wacom_calculate_touch_res(features->x_max,
1288 features->x_phy));
1289 input_abs_set_res(input_dev, ABS_Y,
1290 wacom_calculate_touch_res(features->y_max,
1291 features->y_phy));
1275 } else if (features->device_type == BTN_TOOL_PEN) { 1292 } else if (features->device_type == BTN_TOOL_PEN) {
1276 __set_bit(BTN_TOOL_RUBBER, input_dev->keybit); 1293 __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
1277 __set_bit(BTN_TOOL_PEN, input_dev->keybit); 1294 __set_bit(BTN_TOOL_PEN, input_dev->keybit);
@@ -1426,6 +1443,10 @@ static struct wacom_features wacom_features_0xD3 =
1426 { "Wacom Bamboo 2FG 6x8", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT }; 1443 { "Wacom Bamboo 2FG 6x8", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT };
1427static const struct wacom_features wacom_features_0xD4 = 1444static const struct wacom_features wacom_features_0xD4 =
1428 { "Wacom Bamboo Pen", WACOM_PKGLEN_BBFUN, 14720, 9200, 255, 63, BAMBOO_PT }; 1445 { "Wacom Bamboo Pen", WACOM_PKGLEN_BBFUN, 14720, 9200, 255, 63, BAMBOO_PT };
1446static struct wacom_features wacom_features_0xD6 =
1447 { "Wacom BambooPT 2FG 4x5", WACOM_PKGLEN_BBFUN, 14720, 9200, 1023, 63, BAMBOO_PT };
1448static struct wacom_features wacom_features_0xD7 =
1449 { "Wacom BambooPT 2FG Small", WACOM_PKGLEN_BBFUN, 14720, 9200, 1023, 63, BAMBOO_PT };
1429static struct wacom_features wacom_features_0xD8 = 1450static struct wacom_features wacom_features_0xD8 =
1430 { "Wacom Bamboo Comic 2FG", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT }; 1451 { "Wacom Bamboo Comic 2FG", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT };
1431static struct wacom_features wacom_features_0xDA = 1452static struct wacom_features wacom_features_0xDA =
@@ -1507,6 +1528,8 @@ const struct usb_device_id wacom_ids[] = {
1507 { USB_DEVICE_WACOM(0xD2) }, 1528 { USB_DEVICE_WACOM(0xD2) },
1508 { USB_DEVICE_WACOM(0xD3) }, 1529 { USB_DEVICE_WACOM(0xD3) },
1509 { USB_DEVICE_WACOM(0xD4) }, 1530 { USB_DEVICE_WACOM(0xD4) },
1531 { USB_DEVICE_WACOM(0xD6) },
1532 { USB_DEVICE_WACOM(0xD7) },
1510 { USB_DEVICE_WACOM(0xD8) }, 1533 { USB_DEVICE_WACOM(0xD8) },
1511 { USB_DEVICE_WACOM(0xDA) }, 1534 { USB_DEVICE_WACOM(0xDA) },
1512 { USB_DEVICE_WACOM(0xDB) }, 1535 { USB_DEVICE_WACOM(0xDB) },
diff --git a/drivers/input/touchscreen/bu21013_ts.c b/drivers/input/touchscreen/bu21013_ts.c
index f7fa9ef4cd65..1507ce108d5b 100644
--- a/drivers/input/touchscreen/bu21013_ts.c
+++ b/drivers/input/touchscreen/bu21013_ts.c
@@ -12,6 +12,7 @@
12#include <linux/input.h> 12#include <linux/input.h>
13#include <linux/input/bu21013.h> 13#include <linux/input/bu21013.h>
14#include <linux/slab.h> 14#include <linux/slab.h>
15#include <linux/regulator/consumer.h>
15 16
16#define PEN_DOWN_INTR 0 17#define PEN_DOWN_INTR 0
17#define MAX_FINGERS 2 18#define MAX_FINGERS 2
@@ -139,6 +140,7 @@
139 * @chip: pointer to the touch panel controller 140 * @chip: pointer to the touch panel controller
140 * @in_dev: pointer to the input device structure 141 * @in_dev: pointer to the input device structure
141 * @intr_pin: interrupt pin value 142 * @intr_pin: interrupt pin value
143 * @regulator: pointer to the Regulator used for touch screen
142 * 144 *
143 * Touch panel device data structure 145 * Touch panel device data structure
144 */ 146 */
@@ -149,6 +151,7 @@ struct bu21013_ts_data {
149 const struct bu21013_platform_device *chip; 151 const struct bu21013_platform_device *chip;
150 struct input_dev *in_dev; 152 struct input_dev *in_dev;
151 unsigned int intr_pin; 153 unsigned int intr_pin;
154 struct regulator *regulator;
152}; 155};
153 156
154/** 157/**
@@ -456,6 +459,20 @@ static int __devinit bu21013_probe(struct i2c_client *client,
456 bu21013_data->in_dev = in_dev; 459 bu21013_data->in_dev = in_dev;
457 bu21013_data->chip = pdata; 460 bu21013_data->chip = pdata;
458 bu21013_data->client = client; 461 bu21013_data->client = client;
462
463 bu21013_data->regulator = regulator_get(&client->dev, "V-TOUCH");
464 if (IS_ERR(bu21013_data->regulator)) {
465 dev_err(&client->dev, "regulator_get failed\n");
466 error = PTR_ERR(bu21013_data->regulator);
467 goto err_free_mem;
468 }
469
470 error = regulator_enable(bu21013_data->regulator);
471 if (error < 0) {
472 dev_err(&client->dev, "regulator enable failed\n");
473 goto err_put_regulator;
474 }
475
459 bu21013_data->touch_stopped = false; 476 bu21013_data->touch_stopped = false;
460 init_waitqueue_head(&bu21013_data->wait); 477 init_waitqueue_head(&bu21013_data->wait);
461 478
@@ -464,7 +481,7 @@ static int __devinit bu21013_probe(struct i2c_client *client,
464 error = pdata->cs_en(pdata->cs_pin); 481 error = pdata->cs_en(pdata->cs_pin);
465 if (error < 0) { 482 if (error < 0) {
466 dev_err(&client->dev, "chip init failed\n"); 483 dev_err(&client->dev, "chip init failed\n");
467 goto err_free_mem; 484 goto err_disable_regulator;
468 } 485 }
469 } 486 }
470 487
@@ -485,9 +502,9 @@ static int __devinit bu21013_probe(struct i2c_client *client,
485 __set_bit(EV_ABS, in_dev->evbit); 502 __set_bit(EV_ABS, in_dev->evbit);
486 503
487 input_set_abs_params(in_dev, ABS_MT_POSITION_X, 0, 504 input_set_abs_params(in_dev, ABS_MT_POSITION_X, 0,
488 pdata->x_max_res, 0, 0); 505 pdata->touch_x_max, 0, 0);
489 input_set_abs_params(in_dev, ABS_MT_POSITION_Y, 0, 506 input_set_abs_params(in_dev, ABS_MT_POSITION_Y, 0,
490 pdata->y_max_res, 0, 0); 507 pdata->touch_y_max, 0, 0);
491 input_set_drvdata(in_dev, bu21013_data); 508 input_set_drvdata(in_dev, bu21013_data);
492 509
493 error = request_threaded_irq(pdata->irq, NULL, bu21013_gpio_irq, 510 error = request_threaded_irq(pdata->irq, NULL, bu21013_gpio_irq,
@@ -513,6 +530,10 @@ err_free_irq:
513 bu21013_free_irq(bu21013_data); 530 bu21013_free_irq(bu21013_data);
514err_cs_disable: 531err_cs_disable:
515 pdata->cs_dis(pdata->cs_pin); 532 pdata->cs_dis(pdata->cs_pin);
533err_disable_regulator:
534 regulator_disable(bu21013_data->regulator);
535err_put_regulator:
536 regulator_put(bu21013_data->regulator);
516err_free_mem: 537err_free_mem:
517 input_free_device(in_dev); 538 input_free_device(in_dev);
518 kfree(bu21013_data); 539 kfree(bu21013_data);
@@ -535,6 +556,10 @@ static int __devexit bu21013_remove(struct i2c_client *client)
535 bu21013_data->chip->cs_dis(bu21013_data->chip->cs_pin); 556 bu21013_data->chip->cs_dis(bu21013_data->chip->cs_pin);
536 557
537 input_unregister_device(bu21013_data->in_dev); 558 input_unregister_device(bu21013_data->in_dev);
559
560 regulator_disable(bu21013_data->regulator);
561 regulator_put(bu21013_data->regulator);
562
538 kfree(bu21013_data); 563 kfree(bu21013_data);
539 564
540 device_init_wakeup(&client->dev, false); 565 device_init_wakeup(&client->dev, false);
@@ -561,6 +586,8 @@ static int bu21013_suspend(struct device *dev)
561 else 586 else
562 disable_irq(bu21013_data->chip->irq); 587 disable_irq(bu21013_data->chip->irq);
563 588
589 regulator_disable(bu21013_data->regulator);
590
564 return 0; 591 return 0;
565} 592}
566 593
@@ -577,6 +604,12 @@ static int bu21013_resume(struct device *dev)
577 struct i2c_client *client = bu21013_data->client; 604 struct i2c_client *client = bu21013_data->client;
578 int retval; 605 int retval;
579 606
607 retval = regulator_enable(bu21013_data->regulator);
608 if (retval < 0) {
609 dev_err(&client->dev, "bu21013 regulator enable failed\n");
610 return retval;
611 }
612
580 retval = bu21013_init_chip(bu21013_data); 613 retval = bu21013_init_chip(bu21013_data);
581 if (retval < 0) { 614 if (retval < 0) {
582 dev_err(&client->dev, "bu21013 controller config failed\n"); 615 dev_err(&client->dev, "bu21013 controller config failed\n");
diff --git a/drivers/input/touchscreen/tnetv107x-ts.c b/drivers/input/touchscreen/tnetv107x-ts.c
index cf1dba2e267c..22a3411e93c5 100644
--- a/drivers/input/touchscreen/tnetv107x-ts.c
+++ b/drivers/input/touchscreen/tnetv107x-ts.c
@@ -14,6 +14,7 @@
14 */ 14 */
15 15
16#include <linux/kernel.h> 16#include <linux/kernel.h>
17#include <linux/err.h>
17#include <linux/errno.h> 18#include <linux/errno.h>
18#include <linux/input.h> 19#include <linux/input.h>
19#include <linux/platform_device.h> 20#include <linux/platform_device.h>
@@ -289,9 +290,9 @@ static int __devinit tsc_probe(struct platform_device *pdev)
289 } 290 }
290 291
291 ts->clk = clk_get(dev, NULL); 292 ts->clk = clk_get(dev, NULL);
292 if (!ts->clk) { 293 if (IS_ERR(ts->clk)) {
293 dev_err(dev, "cannot claim device clock\n"); 294 dev_err(dev, "cannot claim device clock\n");
294 error = -EINVAL; 295 error = PTR_ERR(ts->clk);
295 goto error_clk; 296 goto error_clk;
296 } 297 }
297 298
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index c556ed9db13d..8e0dd254eb11 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -46,7 +46,7 @@
46#include <asm/irq_regs.h> 46#include <asm/irq_regs.h>
47 47
48/* Whether we react on sysrq keys or just ignore them */ 48/* Whether we react on sysrq keys or just ignore them */
49static int __read_mostly sysrq_enabled = 1; 49static int __read_mostly sysrq_enabled = SYSRQ_DEFAULT_ENABLE;
50static bool __read_mostly sysrq_always_enabled; 50static bool __read_mostly sysrq_always_enabled;
51 51
52static bool sysrq_on(void) 52static bool sysrq_on(void)
diff --git a/include/linux/input/bu21013.h b/include/linux/input/bu21013.h
index e470d387dd49..05e03284b92a 100644
--- a/include/linux/input/bu21013.h
+++ b/include/linux/input/bu21013.h
@@ -12,8 +12,6 @@
12 * @cs_en: pointer to the cs enable function 12 * @cs_en: pointer to the cs enable function
13 * @cs_dis: pointer to the cs disable function 13 * @cs_dis: pointer to the cs disable function
14 * @irq_read_val: pointer to read the pen irq value function 14 * @irq_read_val: pointer to read the pen irq value function
15 * @x_max_res: xmax resolution
16 * @y_max_res: ymax resolution
17 * @touch_x_max: touch x max 15 * @touch_x_max: touch x max
18 * @touch_y_max: touch y max 16 * @touch_y_max: touch y max
19 * @cs_pin: chip select pin 17 * @cs_pin: chip select pin
@@ -29,8 +27,6 @@ struct bu21013_platform_device {
29 int (*cs_en)(int reset_pin); 27 int (*cs_en)(int reset_pin);
30 int (*cs_dis)(int reset_pin); 28 int (*cs_dis)(int reset_pin);
31 int (*irq_read_val)(void); 29 int (*irq_read_val)(void);
32 int x_max_res;
33 int y_max_res;
34 int touch_x_max; 30 int touch_x_max;
35 int touch_y_max; 31 int touch_y_max;
36 unsigned int cs_pin; 32 unsigned int cs_pin;
diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
index 387fa7d05c98..7faf933cced7 100644
--- a/include/linux/sysrq.h
+++ b/include/linux/sysrq.h
@@ -17,6 +17,9 @@
17#include <linux/errno.h> 17#include <linux/errno.h>
18#include <linux/types.h> 18#include <linux/types.h>
19 19
20/* Enable/disable SYSRQ support by default (0==no, 1==yes). */
21#define SYSRQ_DEFAULT_ENABLE 1
22
20/* Possible values of bitmask for enabling sysrq functions */ 23/* Possible values of bitmask for enabling sysrq functions */
21/* 0x0001 is reserved for enable everything */ 24/* 0x0001 is reserved for enable everything */
22#define SYSRQ_ENABLE_LOG 0x0002 25#define SYSRQ_ENABLE_LOG 0x0002
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index bc86bb32e126..0f1bd83db985 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -170,7 +170,8 @@ static int proc_taint(struct ctl_table *table, int write,
170#endif 170#endif
171 171
172#ifdef CONFIG_MAGIC_SYSRQ 172#ifdef CONFIG_MAGIC_SYSRQ
173static int __sysrq_enabled; /* Note: sysrq code ises it's own private copy */ 173/* Note: sysrq code uses it's own private copy */
174static int __sysrq_enabled = SYSRQ_DEFAULT_ENABLE;
174 175
175static int sysrq_sysctl_handler(ctl_table *table, int write, 176static int sysrq_sysctl_handler(ctl_table *table, int write,
176 void __user *buffer, size_t *lenp, 177 void __user *buffer, size_t *lenp,
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-26 17:25:34 -0500