Merge branch 'next' into for-linus

arch/arm/mach-ux500/board-mop500.c

@@ -18,12 +18,14 @@
 #include <linux/amba/pl022.h>
 #include <linux/spi/spi.h>
 #include <linux/mfd/ab8500.h>
+#include <linux/input/matrix_keypad.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 
 #include <plat/pincfg.h>
 #include <plat/i2c.h>
+#include <plat/ske.h>
 
 #include <mach/hardware.h>
 #include <mach/setup.h>
@@ -47,6 +49,24 @@ static pin_cfg_t mop500_pins[] = {
 	GPIO11_I2C2_SCL,
 	GPIO229_I2C3_SDA,
 	GPIO230_I2C3_SCL,
+
+	/* SKE keypad */
+	GPIO153_KP_I7,
+	GPIO154_KP_I6,
+	GPIO155_KP_I5,
+	GPIO156_KP_I4,
+	GPIO157_KP_O7,
+	GPIO158_KP_O6,
+	GPIO159_KP_O5,
+	GPIO160_KP_O4,
+	GPIO161_KP_I3,
+	GPIO162_KP_I2,
+	GPIO163_KP_I1,
+	GPIO164_KP_I0,
+	GPIO165_KP_O3,
+	GPIO166_KP_O2,
+	GPIO167_KP_O1,
+	GPIO168_KP_O0,
 };
 
 static void ab4500_spi_cs_control(u32 command)
@@ -134,12 +154,120 @@ static struct amba_device *amba_devs[] __initdata = {
 	&u8500_ssp0_device,
 };
 
+static const unsigned int ux500_keymap[] = {
+	KEY(2, 5, KEY_END),
+	KEY(4, 1, KEY_POWER),
+	KEY(3, 5, KEY_VOLUMEDOWN),
+	KEY(1, 3, KEY_3),
+	KEY(5, 2, KEY_RIGHT),
+	KEY(5, 0, KEY_9),
+
+	KEY(0, 5, KEY_MENU),
+	KEY(7, 6, KEY_ENTER),
+	KEY(4, 5, KEY_0),
+	KEY(6, 7, KEY_2),
+	KEY(3, 4, KEY_UP),
+	KEY(3, 3, KEY_DOWN),
+
+	KEY(6, 4, KEY_SEND),
+	KEY(6, 2, KEY_BACK),
+	KEY(4, 2, KEY_VOLUMEUP),
+	KEY(5, 5, KEY_1),
+	KEY(4, 3, KEY_LEFT),
+	KEY(3, 2, KEY_7),
+};
+
+static const struct matrix_keymap_data ux500_keymap_data = {
+	.keymap         = ux500_keymap,
+	.keymap_size    = ARRAY_SIZE(ux500_keymap),
+};
+
+/*
+ * Nomadik SKE keypad
+ */
+#define ROW_PIN_I0      164
+#define ROW_PIN_I1      163
+#define ROW_PIN_I2      162
+#define ROW_PIN_I3      161
+#define ROW_PIN_I4      156
+#define ROW_PIN_I5      155
+#define ROW_PIN_I6      154
+#define ROW_PIN_I7      153
+#define COL_PIN_O0      168
+#define COL_PIN_O1      167
+#define COL_PIN_O2      166
+#define COL_PIN_O3      165
+#define COL_PIN_O4      160
+#define COL_PIN_O5      159
+#define COL_PIN_O6      158
+#define COL_PIN_O7      157
+
+#define SKE_KPD_MAX_ROWS        8
+#define SKE_KPD_MAX_COLS        8
+
+static int ske_kp_rows[] = {
+	ROW_PIN_I0, ROW_PIN_I1, ROW_PIN_I2, ROW_PIN_I3,
+	ROW_PIN_I4, ROW_PIN_I5, ROW_PIN_I6, ROW_PIN_I7,
+};
+
+/*
+ * ske_set_gpio_row: request and set gpio rows
+ */
+static int ske_set_gpio_row(int gpio)
+{
+	int ret;
+
+	ret = gpio_request(gpio, "ske-kp");
+	if (ret < 0) {
+		pr_err("ske_set_gpio_row: gpio request failed\n");
+		return ret;
+	}
+
+	ret = gpio_direction_output(gpio, 1);
+	if (ret < 0) {
+		pr_err("ske_set_gpio_row: gpio direction failed\n");
+		gpio_free(gpio);
+	}
+
+	return ret;
+}
+
+/*
+ * ske_kp_init - enable the gpio configuration
+ */
+static int ske_kp_init(void)
+{
+	int ret, i;
+
+	for (i = 0; i < SKE_KPD_MAX_ROWS; i++) {
+		ret = ske_set_gpio_row(ske_kp_rows[i]);
+		if (ret < 0) {
+			pr_err("ske_kp_init: failed init\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static struct ske_keypad_platform_data ske_keypad_board = {
+	.init           = ske_kp_init,
+	.keymap_data    = &ux500_keymap_data,
+	.no_autorepeat  = true,
+	.krow           = SKE_KPD_MAX_ROWS,     /* 8x8 matrix */
+	.kcol           = SKE_KPD_MAX_COLS,
+	.debounce_ms    = 40,                   /* in millsecs */
+};
+
+
+
 /* add any platform devices here - TODO */
 static struct platform_device *platform_devs[] __initdata = {
 	&u8500_i2c0_device,
 	&ux500_i2c1_device,
 	&ux500_i2c2_device,
 	&ux500_i2c3_device,
+	&ux500_ske_keypad_device,
 };
 
 static void __init u8500_init_machine(void)
@@ -154,6 +282,7 @@ static void __init u8500_init_machine(void)
 	ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
 	ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
 	ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
+	ux500_ske_keypad_device.dev.platform_data = &ske_keypad_board;
 
 	u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
 

arch/arm/mach-ux500/clock.c

@@ -477,6 +477,7 @@ static struct clk_lookup u8500_common_clks[] = {
 	CLK(sdi5,	"sdi5",		NULL),
 	CLK(uart2,	"uart2",	NULL),
 	CLK(ske,	"ske",		NULL),
+	CLK(ske,	"nmk-ske-keypad",	NULL),
 	CLK(sdi2,	"sdi2",		NULL),
 	CLK(i2c0,	"nmk-i2c.0",	NULL),
 	CLK(fsmc,	"fsmc",		NULL),

arch/arm/mach-ux500/devices-db8500.c

@@ -216,3 +216,23 @@ void dma40_u8500ed_fixup(void)
 	dma40_resources[1].start = U8500_DMA_LCPA_BASE_ED;
 	dma40_resources[1].end = U8500_DMA_LCPA_BASE_ED + 2 * SZ_1K - 1;
 }
+
+struct resource keypad_resources[] = {
+	[0] = {
+		.start = U8500_SKE_BASE,
+		.end = U8500_SKE_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = IRQ_DB8500_KB,
+		.end = IRQ_DB8500_KB,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device ux500_ske_keypad_device = {
+	.name = "nmk-ske-keypad",
+	.id = -1,
+	.num_resources = ARRAY_SIZE(keypad_resources),
+	.resource = keypad_resources,
+};

arch/arm/mach-ux500/include/mach/devices.h

@@ -26,6 +26,7 @@ extern struct platform_device ux500_i2c3_device;
 extern struct platform_device u8500_i2c0_device;
 extern struct platform_device u8500_i2c4_device;
 extern struct platform_device u8500_dma40_device;
+extern struct platform_device ux500_ske_keypad_device;
 
 void dma40_u8500ed_fixup(void);
 

arch/arm/mach-ux500/pins-db8500.h

@@ -459,82 +459,82 @@
 #define GPIO152_KP_O9		PIN_CFG(152, ALT_C)
 
 #define GPIO153_GPIO		PIN_CFG(153, GPIO)
-#define GPIO153_KP_I7		PIN_CFG(153, ALT_A)
+#define GPIO153_KP_I7		PIN_CFG_PULL(153, ALT_A, DOWN)
 #define GPIO153_LCD_D24		PIN_CFG(153, ALT_B)
 #define GPIO153_U2_RXD		PIN_CFG(153, ALT_C)
 
 #define GPIO154_GPIO		PIN_CFG(154, GPIO)
-#define GPIO154_KP_I6		PIN_CFG(154, ALT_A)
+#define GPIO154_KP_I6		PIN_CFG_PULL(154, ALT_A, DOWN)
 #define GPIO154_LCD_D25		PIN_CFG(154, ALT_B)
 #define GPIO154_U2_TXD		PIN_CFG(154, ALT_C)
 
 #define GPIO155_GPIO		PIN_CFG(155, GPIO)
-#define GPIO155_KP_I5		PIN_CFG(155, ALT_A)
+#define GPIO155_KP_I5		PIN_CFG_PULL(155, ALT_A, DOWN)
 #define GPIO155_LCD_D26		PIN_CFG(155, ALT_B)
 #define GPIO155_STMAPE_CLK	PIN_CFG(155, ALT_C)
 
 #define GPIO156_GPIO		PIN_CFG(156, GPIO)
-#define GPIO156_KP_I4		PIN_CFG(156, ALT_A)
+#define GPIO156_KP_I4		PIN_CFG_PULL(156, ALT_A, DOWN)
 #define GPIO156_LCD_D27		PIN_CFG(156, ALT_B)
 #define GPIO156_STMAPE_DAT3	PIN_CFG(156, ALT_C)
 
 #define GPIO157_GPIO		PIN_CFG(157, GPIO)
-#define GPIO157_KP_O7		PIN_CFG(157, ALT_A)
+#define GPIO157_KP_O7		PIN_CFG_PULL(157, ALT_A, UP)
 #define GPIO157_LCD_D28		PIN_CFG(157, ALT_B)
 #define GPIO157_STMAPE_DAT2	PIN_CFG(157, ALT_C)
 
 #define GPIO158_GPIO		PIN_CFG(158, GPIO)
-#define GPIO158_KP_O6		PIN_CFG(158, ALT_A)
+#define GPIO158_KP_O6		PIN_CFG_PULL(158, ALT_A, UP)
 #define GPIO158_LCD_D29		PIN_CFG(158, ALT_B)
 #define GPIO158_STMAPE_DAT1	PIN_CFG(158, ALT_C)
 
 #define GPIO159_GPIO		PIN_CFG(159, GPIO)
-#define GPIO159_KP_O5		PIN_CFG(159, ALT_A)
+#define GPIO159_KP_O5		PIN_CFG_PULL(159, ALT_A, UP)
 #define GPIO159_LCD_D30		PIN_CFG(159, ALT_B)
 #define GPIO159_STMAPE_DAT0	PIN_CFG(159, ALT_C)
 
 #define GPIO160_GPIO		PIN_CFG(160, GPIO)
-#define GPIO160_KP_O4		PIN_CFG(160, ALT_A)
+#define GPIO160_KP_O4		PIN_CFG_PULL(160, ALT_A, UP)
 #define GPIO160_LCD_D31		PIN_CFG(160, ALT_B)
 #define GPIO160_NONE		PIN_CFG(160, ALT_C)
 
 #define GPIO161_GPIO		PIN_CFG(161, GPIO)
-#define GPIO161_KP_I3		PIN_CFG(161, ALT_A)
+#define GPIO161_KP_I3		PIN_CFG_PULL(161, ALT_A, DOWN)
 #define GPIO161_LCD_D32		PIN_CFG(161, ALT_B)
 #define GPIO161_UARTMOD_RXD	PIN_CFG(161, ALT_C)
 
 #define GPIO162_GPIO		PIN_CFG(162, GPIO)
-#define GPIO162_KP_I2		PIN_CFG(162, ALT_A)
+#define GPIO162_KP_I2		PIN_CFG_PULL(162, ALT_A, DOWN)
 #define GPIO162_LCD_D33		PIN_CFG(162, ALT_B)
 #define GPIO162_UARTMOD_TXD	PIN_CFG(162, ALT_C)
 
 #define GPIO163_GPIO		PIN_CFG(163, GPIO)
-#define GPIO163_KP_I1		PIN_CFG(163, ALT_A)
+#define GPIO163_KP_I1		PIN_CFG_PULL(163, ALT_A, DOWN)
 #define GPIO163_LCD_D34		PIN_CFG(163, ALT_B)
 #define GPIO163_STMMOD_CLK	PIN_CFG(163, ALT_C)
 
 #define GPIO164_GPIO		PIN_CFG(164, GPIO)
-#define GPIO164_KP_I0		PIN_CFG(164, ALT_A)
+#define GPIO164_KP_I0		PIN_CFG_PULL(164, ALT_A, UP)
 #define GPIO164_LCD_D35		PIN_CFG(164, ALT_B)
 #define GPIO164_STMMOD_DAT3	PIN_CFG(164, ALT_C)
 
 #define GPIO165_GPIO		PIN_CFG(165, GPIO)
-#define GPIO165_KP_O3		PIN_CFG(165, ALT_A)
+#define GPIO165_KP_O3		PIN_CFG_PULL(165, ALT_A, UP)
 #define GPIO165_LCD_D36		PIN_CFG(165, ALT_B)
 #define GPIO165_STMMOD_DAT2	PIN_CFG(165, ALT_C)
 
 #define GPIO166_GPIO		PIN_CFG(166, GPIO)
-#define GPIO166_KP_O2		PIN_CFG(166, ALT_A)
+#define GPIO166_KP_O2		PIN_CFG_PULL(166, ALT_A, UP)
 #define GPIO166_LCD_D37		PIN_CFG(166, ALT_B)
 #define GPIO166_STMMOD_DAT1	PIN_CFG(166, ALT_C)
 
 #define GPIO167_GPIO		PIN_CFG(167, GPIO)
-#define GPIO167_KP_O1		PIN_CFG(167, ALT_A)
+#define GPIO167_KP_O1		PIN_CFG_PULL(167, ALT_A, UP)
 #define GPIO167_LCD_D38		PIN_CFG(167, ALT_B)
 #define GPIO167_STMMOD_DAT0	PIN_CFG(167, ALT_C)
 
 #define GPIO168_GPIO		PIN_CFG(168, GPIO)
-#define GPIO168_KP_O0		PIN_CFG(168, ALT_A)
+#define GPIO168_KP_O0		PIN_CFG_PULL(168, ALT_A, UP)
 #define GPIO168_LCD_D39		PIN_CFG(168, ALT_B)
 #define GPIO168_NONE		PIN_CFG(168, ALT_C)
 

arch/arm/plat-nomadik/include/plat/ske.h

+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
+ *
+ * ux500 Scroll key and Keypad Encoder (SKE) header
+ */
+
+#ifndef __SKE_H
+#define __SKE_H
+
+#include <linux/input/matrix_keypad.h>
+
+/* register definitions for SKE peripheral */
+#define SKE_CR		0x00
+#define SKE_VAL0	0x04
+#define SKE_VAL1	0x08
+#define SKE_DBCR	0x0C
+#define SKE_IMSC	0x10
+#define SKE_RIS		0x14
+#define SKE_MIS		0x18
+#define SKE_ICR		0x1C
+
+/*
+ * Keypad module
+ */
+
+/**
+ * struct keypad_platform_data - structure for platform specific data
+ * @init:	pointer to keypad init function
+ * @exit:	pointer to keypad deinitialisation function
+ * @keymap_data: matrix scan code table for keycodes
+ * @krow:	maximum number of rows
+ * @kcol:	maximum number of columns
+ * @debounce_ms: platform specific debounce time
+ * @no_autorepeat: flag for auto repetition
+ * @wakeup_enable: allow waking up the system
+ */
+struct ske_keypad_platform_data {
+	int (*init)(void);
+	int (*exit)(void);
+	const struct matrix_keymap_data *keymap_data;
+	u8 krow;
+	u8 kcol;
+	u8 debounce_ms;
+	bool no_autorepeat;
+	bool wakeup_enable;
+};
+#endif	/*__SKE_KPD_H*/

arch/arm/plat-omap/include/plat/omap4-keypad.h

+#ifndef ARCH_ARM_PLAT_OMAP4_KEYPAD_H
+#define ARCH_ARM_PLAT_OMAP4_KEYPAD_H
+
+#include <linux/input/matrix_keypad.h>
+
+struct omap4_keypad_platform_data {
+	const struct matrix_keymap_data *keymap_data;
+
+	u8 rows;
+	u8 cols;
+};
+
+extern int omap4_keyboard_init(struct omap4_keypad_platform_data *);
+#endif

drivers/char/keyboard.c

@@ -175,8 +175,7 @@ EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
  */
 
 struct getset_keycode_data {
-	unsigned int scancode;
-	unsigned int keycode;
+	struct input_keymap_entry ke;
 	int error;
 };
 
@@ -184,32 +183,50 @@ static int getkeycode_helper(struct input_handle *handle, void *data)
 {
 	struct getset_keycode_data *d = data;
 
-	d->error = input_get_keycode(handle->dev, d->scancode, &d->keycode);
+	d->error = input_get_keycode(handle->dev, &d->ke);
 
 	return d->error == 0; /* stop as soon as we successfully get one */
 }
 
 int getkeycode(unsigned int scancode)
 {
-	struct getset_keycode_data d = { scancode, 0, -ENODEV };
+	struct getset_keycode_data d = {
+		.ke	= {
+			.flags		= 0,
+			.len		= sizeof(scancode),
+			.keycode	= 0,
+		},
+		.error	= -ENODEV,
+	};
+
+	memcpy(d.ke.scancode, &scancode, sizeof(scancode));
 
 	input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper);
 
-	return d.error ?: d.keycode;
+	return d.error ?: d.ke.keycode;
 }
 
 static int setkeycode_helper(struct input_handle *handle, void *data)
 {
 	struct getset_keycode_data *d = data;
 
-	d->error = input_set_keycode(handle->dev, d->scancode, d->keycode);
+	d->error = input_set_keycode(handle->dev, &d->ke);
 
 	return d->error == 0; /* stop as soon as we successfully set one */
 }
 
 int setkeycode(unsigned int scancode, unsigned int keycode)
 {
-	struct getset_keycode_data d = { scancode, keycode, -ENODEV };
+	struct getset_keycode_data d = {
+		.ke	= {
+			.flags		= 0,
+			.len		= sizeof(scancode),
+			.keycode	= keycode,
+		},
+		.error	= -ENODEV,
+	};
+
+	memcpy(d.ke.scancode, &scancode, sizeof(scancode));
 
 	input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper);
 

drivers/char/sysrq.c

@@ -566,10 +566,16 @@ static const unsigned char sysrq_xlate[KEY_MAX + 1] =
 static bool sysrq_down;
 static int sysrq_alt_use;
 static int sysrq_alt;
+static DEFINE_SPINLOCK(sysrq_event_lock);
 
 static bool sysrq_filter(struct input_handle *handle, unsigned int type,
 		         unsigned int code, int value)
 {
+	bool suppress;
+
+	/* We are called with interrupts disabled, just take the lock */
+	spin_lock(&sysrq_event_lock);
+
 	if (type != EV_KEY)
 		goto out;
 
@@ -601,7 +607,10 @@ static bool sysrq_filter(struct input_handle *handle, unsigned int type,
 	}
 
 out:
-	return sysrq_down;
+	suppress = sysrq_down;
+	spin_unlock(&sysrq_event_lock);
+
+	return suppress;
 }
 
 static int sysrq_connect(struct input_handler *handler,
@@ -652,8 +661,8 @@ static void sysrq_disconnect(struct input_handle *handle)
 }
 
 /*
- * We are matching on KEY_LEFTALT insteard of KEY_SYSRQ because not all
- * keyboards have SysRq ikey predefined and so user may add it to keymap
+ * We are matching on KEY_LEFTALT instead of KEY_SYSRQ because not all
+ * keyboards have SysRq key predefined and so user may add it to keymap
  * later, but we expect all such keyboards to have left alt.
  */
 static const struct input_device_id sysrq_ids[] = {

drivers/hid/hid-core.c

@@ -1766,6 +1766,11 @@ static bool hid_ignore(struct hid_device *hdev)
 		    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
 			return true;
 		break;
+	case USB_VENDOR_ID_HANWANG:
+		if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
+		    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
+			return true;
+		break;
 	}
 
 	if (hdev->type == HID_TYPE_USBMOUSE &&

drivers/hid/hid-ids.h

@@ -291,6 +291,10 @@
 #define USB_DEVICE_ID_GYRATION_REMOTE_2 0x0003
 #define USB_DEVICE_ID_GYRATION_REMOTE_3 0x0008
 
+#define USB_VENDOR_ID_HANWANG		0x0b57
+#define USB_DEVICE_ID_HANWANG_TABLET_FIRST	0x5000
+#define USB_DEVICE_ID_HANWANG_TABLET_LAST	0x8fff
+
 #define USB_VENDOR_ID_HAPP		0x078b
 #define USB_DEVICE_ID_UGCI_DRIVING	0x0010
 #define USB_DEVICE_ID_UGCI_FLYING	0x0020

drivers/hid/hid-input.c

@@ -68,39 +68,52 @@ static const struct {
 #define map_key_clear(c)	hid_map_usage_clear(hidinput, usage, &bit, \
 		&max, EV_KEY, (c))
 
-static inline int match_scancode(unsigned int code, unsigned int scancode)
+static bool match_scancode(struct hid_usage *usage,
+			   unsigned int cur_idx, unsigned int scancode)
 {
-	if (scancode == 0)
-		return 1;
-
-	return (code & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
+	return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
 }
 
-static inline int match_keycode(unsigned int code, unsigned int keycode)
+static bool match_keycode(struct hid_usage *usage,
+			  unsigned int cur_idx, unsigned int keycode)
 {
-	if (keycode == 0)
-		return 1;
+	/*
+	 * We should exclude unmapped usages when doing lookup by keycode.
+	 */
+	return (usage->type == EV_KEY && usage->code == keycode);
+}
 
-	return code == keycode;
+static bool match_index(struct hid_usage *usage,
+			unsigned int cur_idx, unsigned int idx)
+{
+	return cur_idx == idx;
 }
 
+typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
+				unsigned int cur_idx, unsigned int val);
+
 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
-					   unsigned int scancode,
-					   unsigned int keycode)
+					   hid_usage_cmp_t match,
+					   unsigned int value,
+					   unsigned int *usage_idx)
 {
-	int i, j, k;
+	unsigned int i, j, k, cur_idx = 0;
 	struct hid_report *report;
 	struct hid_usage *usage;
 
 	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 		list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 			for (i = 0; i < report->maxfield; i++) {
-				for ( j = 0; j < report->field[i]->maxusage; j++) {
+				for (j = 0; j < report->field[i]->maxusage; j++) {
 					usage = report->field[i]->usage + j;
-					if (usage->type == EV_KEY &&
-						match_scancode(usage->hid, scancode) &&
-						match_keycode(usage->code, keycode))
-						return usage;
+					if (usage->type == EV_KEY || usage->type == 0) {
+						if (match(usage, cur_idx, value)) {
+							if (usage_idx)
+								*usage_idx = cur_idx;
+							return usage;
+						}
+						cur_idx++;
+					}
 				}
 			}
 		}
@@ -108,39 +121,68 @@ static struct hid_usage *hidinput_find_key(struct hid_device *hid,
 	return NULL;
 }
 
+static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
+					const struct input_keymap_entry *ke,
+					unsigned int *index)
+{
+	struct hid_usage *usage;
+	unsigned int scancode;
+
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX)
+		usage = hidinput_find_key(hid, match_index, ke->index, index);
+	else if (input_scancode_to_scalar(ke, &scancode) == 0)
+		usage = hidinput_find_key(hid, match_scancode, scancode, index);
+	else
+		usage = NULL;
+
+	return usage;
+}
+
 static int hidinput_getkeycode(struct input_dev *dev,
-			       unsigned int scancode, unsigned int *keycode)
+			       struct input_keymap_entry *ke)
 {
 	struct hid_device *hid = input_get_drvdata(dev);
 	struct hid_usage *usage;
+	unsigned int scancode, index;
 
-	usage = hidinput_find_key(hid, scancode, 0);
+	usage = hidinput_locate_usage(hid, ke, &index);
 	if (usage) {
-		*keycode = usage->code;
+		ke->keycode = usage->type == EV_KEY ?
+				usage->code : KEY_RESERVED;
+		ke->index = index;
+		scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
+		ke->len = sizeof(scancode);
+		memcpy(ke->scancode, &scancode, sizeof(scancode));
 		return 0;
 	}
+
 	return -EINVAL;
 }
 
 static int hidinput_setkeycode(struct input_dev *dev,
-			       unsigned int scancode, unsigned int keycode)
+			       const struct input_keymap_entry *ke,
+			       unsigned int *old_keycode)
 {
 	struct hid_device *hid = input_get_drvdata(dev);
 	struct hid_usage *usage;
-	int old_keycode;
 
-	usage = hidinput_find_key(hid, scancode, 0);
+	usage = hidinput_locate_usage(hid, ke, NULL);
 	if (usage) {
-		old_keycode = usage->code;
-		usage->code = keycode;
+		*old_keycode = usage->type == EV_KEY ?
+				usage->code : KEY_RESERVED;
+		usage->code = ke->keycode;
 
-		clear_bit(old_keycode, dev->keybit);
+		clear_bit(*old_keycode, dev->keybit);
 		set_bit(usage->code, dev->keybit);
-		dbg_hid(KERN_DEBUG "Assigned keycode %d to HID usage code %x\n", keycode, scancode);
-		/* Set the keybit for the old keycode if the old keycode is used
-		 * by another key */
-		if (hidinput_find_key (hid, 0, old_keycode))
-			set_bit(old_keycode, dev->keybit);
+		dbg_hid(KERN_DEBUG "Assigned keycode %d to HID usage code %x\n",
+			usage->code, usage->hid);
+
+		/*
+		 * Set the keybit for the old keycode if the old keycode is used
+		 * by another key
+		 */
+		if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
+			set_bit(*old_keycode, dev->keybit);
 
 		return 0;
 	}
@@ -748,8 +790,8 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
 					hid->ll_driver->hidinput_input_event;
 				input_dev->open = hidinput_open;
 				input_dev->close = hidinput_close;
-				input_dev->setkeycode = hidinput_setkeycode;
-				input_dev->getkeycode = hidinput_getkeycode;
+				input_dev->setkeycode_new = hidinput_setkeycode;
+				input_dev->getkeycode_new = hidinput_getkeycode;
 
 				input_dev->name = hid->name;
 				input_dev->phys = hid->phys;

drivers/input/evdev.c

@@ -534,6 +534,80 @@ static int handle_eviocgbit(struct input_dev *dev,
 }
 #undef OLD_KEY_MAX
 
+static int evdev_handle_get_keycode(struct input_dev *dev,
+				    void __user *p, size_t size)
+{
+	struct input_keymap_entry ke;
+	int error;
+
+	memset(&ke, 0, sizeof(ke));
+
+	if (size == sizeof(unsigned int[2])) {
+		/* legacy case */
+		int __user *ip = (int __user *)p;
+
+		if (copy_from_user(ke.scancode, p, sizeof(unsigned int)))
+			return -EFAULT;
+
+		ke.len = sizeof(unsigned int);
+		ke.flags = 0;
+
+		error = input_get_keycode(dev, &ke);
+		if (error)
+			return error;
+
+		if (put_user(ke.keycode, ip + 1))
+			return -EFAULT;
+
+	} else {
+		size = min(size, sizeof(ke));
+
+		if (copy_from_user(&ke, p, size))
+			return -EFAULT;
+
+		error = input_get_keycode(dev, &ke);
+		if (error)
+			return error;
+
+		if (copy_to_user(p, &ke, size))
+			return -EFAULT;
+	}
+	return 0;
+}
+
+static int evdev_handle_set_keycode(struct input_dev *dev,
+				    void __user *p, size_t size)
+{
+	struct input_keymap_entry ke;
+
+	memset(&ke, 0, sizeof(ke));
+
+	if (size == sizeof(unsigned int[2])) {
+		/* legacy case */
+		int __user *ip = (int __user *)p;
+
+		if (copy_from_user(ke.scancode, p, sizeof(unsigned int)))
+			return -EFAULT;
+
+		if (get_user(ke.keycode, ip + 1))
+			return -EFAULT;
+
+		ke.len = sizeof(unsigned int);
+		ke.flags = 0;
+
+	} else {
+		size = min(size, sizeof(ke));
+
+		if (copy_from_user(&ke, p, size))
+			return -EFAULT;
+
+		if (ke.len > sizeof(ke.scancode))
+			return -EINVAL;
+	}
+
+	return input_set_keycode(dev, &ke);
+}
+
 static long evdev_do_ioctl(struct file *file, unsigned int cmd,
 			   void __user *p, int compat_mode)
 {
@@ -580,25 +654,6 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
 
 		return 0;
 
-	case EVIOCGKEYCODE:
-		if (get_user(t, ip))
-			return -EFAULT;
-
-		error = input_get_keycode(dev, t, &v);
-		if (error)
-			return error;
-
-		if (put_user(v, ip + 1))
-			return -EFAULT;
-
-		return 0;
-
-	case EVIOCSKEYCODE:
-		if (get_user(t, ip) || get_user(v, ip + 1))
-			return -EFAULT;
-
-		return input_set_keycode(dev, t, v);
-
 	case EVIOCRMFF:
 		return input_ff_erase(dev, (int)(unsigned long) p, file);
 
@@ -620,7 +675,6 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
 
 	/* Now check variable-length commands */
 #define EVIOC_MASK_SIZE(nr)	((nr) & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT))
-
 	switch (EVIOC_MASK_SIZE(cmd)) {
 
 	case EVIOCGKEY(0):
@@ -654,6 +708,12 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
 			return -EFAULT;
 
 		return error;
+
+	case EVIOC_MASK_SIZE(EVIOCGKEYCODE):
+		return evdev_handle_get_keycode(dev, p, size);
+
+	case EVIOC_MASK_SIZE(EVIOCSKEYCODE):
+		return evdev_handle_set_keycode(dev, p, size);
 	}
 
 	/* Multi-number variable-length handlers */

drivers/input/gameport/emu10k1-gp.c

@@ -59,44 +59,52 @@ MODULE_DEVICE_TABLE(pci, emu_tbl);
 
 static int __devinit emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
-	int ioport, iolen;
 	struct emu *emu;
 	struct gameport *port;
-
-	if (pci_enable_device(pdev))
-		return -EBUSY;
-
-	ioport = pci_resource_start(pdev, 0);
-	iolen = pci_resource_len(pdev, 0);
-
-	if (!request_region(ioport, iolen, "emu10k1-gp"))
-		return -EBUSY;
+	int error;
 
 	emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
 	port = gameport_allocate_port();
 	if (!emu || !port) {
 		printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
-		release_region(ioport, iolen);
-		kfree(emu);
-		gameport_free_port(port);
-		return -ENOMEM;
+		error = -ENOMEM;
+		goto err_out_free;
 	}
 
-	emu->io = ioport;
-	emu->size = iolen;
+	error = pci_enable_device(pdev);
+	if (error)
+		goto err_out_free;
+
+	emu->io = pci_resource_start(pdev, 0);
+	emu->size = pci_resource_len(pdev, 0);
+
 	emu->dev = pdev;
 	emu->gameport = port;
 
 	gameport_set_name(port, "EMU10K1");
 	gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
 	port->dev.parent = &pdev->dev;
-	port->io = ioport;
+	port->io = emu->io;
+
+	if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
+		printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
+			emu->io, emu->io + emu->size - 1);
+		error = -EBUSY;
+		goto err_out_disable_dev;
+	}
 
 	pci_set_drvdata(pdev, emu);
 
 	gameport_register_port(port);
 
 	return 0;
+
+ err_out_disable_dev:
+	pci_disable_device(pdev);
+ err_out_free:
+	gameport_free_port(port);
+	kfree(emu);
+	return error;
 }
 
 static void __devexit emu_remove(struct pci_dev *pdev)
@@ -106,6 +114,8 @@ static void __devexit emu_remove(struct pci_dev *pdev)
 	gameport_unregister_port(emu->gameport);
 	release_region(emu->io, emu->size);
 	kfree(emu);
+
+	pci_disable_device(pdev);
 }
 
 static struct pci_driver emu_driver = {

drivers/input/gameport/fm801-gp.c

@@ -133,11 +133,11 @@ static void __devexit fm801_gp_remove(struct pci_dev *pci)
 {
 	struct fm801_gp *gp = pci_get_drvdata(pci);
 
-	if (gp) {
-		gameport_unregister_port(gp->gameport);
-		release_resource(gp->res_port);
-		kfree(gp);
-	}
+	gameport_unregister_port(gp->gameport);
+	release_resource(gp->res_port);
+	kfree(gp);
+
+	pci_disable_device(pci);
 }
 
 static const struct pci_device_id fm801_gp_id_table[] = {

drivers/input/input.c

@@ -171,7 +171,7 @@ static int input_handle_abs_event(struct input_dev *dev,
 	if (code == ABS_MT_SLOT) {
 		/*
 		 * "Stage" the event; we'll flush it later, when we
-		 * get actiual touch data.
+		 * get actual touch data.
 		 */
 		if (*pval >= 0 && *pval < dev->mtsize)
 			dev->slot = *pval;
@@ -188,7 +188,7 @@ static int input_handle_abs_event(struct input_dev *dev,
 		pold = &mtslot->abs[code - ABS_MT_FIRST];
 	} else {
 		/*
-		 * Bypass filtering for multitouch events when
+		 * Bypass filtering for multi-touch events when
 		 * not employing slots.
 		 */
 		pold = NULL;
@@ -634,78 +634,141 @@ static void input_disconnect_device(struct input_dev *dev)
 	spin_unlock_irq(&dev->event_lock);
 }
 
-static int input_fetch_keycode(struct input_dev *dev, int scancode)
+/**
+ * input_scancode_to_scalar() - converts scancode in &struct input_keymap_entry
+ * @ke: keymap entry containing scancode to be converted.
+ * @scancode: pointer to the location where converted scancode should
+ *	be stored.
+ *
+ * This function is used to convert scancode stored in &struct keymap_entry
+ * into scalar form understood by legacy keymap handling methods. These
+ * methods expect scancodes to be represented as 'unsigned int'.
+ */
+int input_scancode_to_scalar(const struct input_keymap_entry *ke,
+			     unsigned int *scancode)
+{
+	switch (ke->len) {
+	case 1:
+		*scancode = *((u8 *)ke->scancode);
+		break;
+
+	case 2:
+		*scancode = *((u16 *)ke->scancode);
+		break;
+
+	case 4:
+		*scancode = *((u32 *)ke->scancode);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(input_scancode_to_scalar);
+
+/*
+ * Those routines handle the default case where no [gs]etkeycode() is
+ * defined. In this case, an array indexed by the scancode is used.
+ */
+
+static unsigned int input_fetch_keycode(struct input_dev *dev,
+					unsigned int index)
 {
 	switch (dev->keycodesize) {
-		case 1:
-			return ((u8 *)dev->keycode)[scancode];
+	case 1:
+		return ((u8 *)dev->keycode)[index];
 
-		case 2:
-			return ((u16 *)dev->keycode)[scancode];
+	case 2:
+		return ((u16 *)dev->keycode)[index];
 
-		default:
-			return ((u32 *)dev->keycode)[scancode];
+	default:
+		return ((u32 *)dev->keycode)[index];
 	}
 }
 
 static int input_default_getkeycode(struct input_dev *dev,
-				    unsigned int scancode,
-				    unsigned int *keycode)
+				    struct input_keymap_entry *ke)
 {
+	unsigned int index;
+	int error;
+
 	if (!dev->keycodesize)
 		return -EINVAL;
 
-	if (scancode >= dev->keycodemax)
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX)
+		index = ke->index;
+	else {
+		error = input_scancode_to_scalar(ke, &index);
+		if (error)
+			return error;
+	}
+
+	if (index >= dev->keycodemax)
 		return -EINVAL;
 
-	*keycode = input_fetch_keycode(dev, scancode);
+	ke->keycode = input_fetch_keycode(dev, index);
+	ke->index = index;
+	ke->len = sizeof(index);
+	memcpy(ke->scancode, &index, sizeof(index));
 
 	return 0;
 }
 
 static int input_default_setkeycode(struct input_dev *dev,
-				    unsigned int scancode,
-				    unsigned int keycode)
+				    const struct input_keymap_entry *ke,
+				    unsigned int *old_keycode)
 {
-	int old_keycode;
+	unsigned int index;
+	int error;
 	int i;
 
-	if (scancode >= dev->keycodemax)
+	if (!dev->keycodesize)
 		return -EINVAL;
 
-	if (!dev->keycodesize)
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
+		index = ke->index;
+	} else {
+		error = input_scancode_to_scalar(ke, &index);
+		if (error)
+			return error;
+	}
+
+	if (index >= dev->keycodemax)
 		return -EINVAL;
 
-	if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8)))
+	if (dev->keycodesize < sizeof(dev->keycode) &&
+			(ke->keycode >> (dev->keycodesize * 8)))
 		return -EINVAL;
 
 	switch (dev->keycodesize) {
 		case 1: {
 			u8 *k = (u8 *)dev->keycode;
-			old_keycode = k[scancode];
-			k[scancode] = keycode;
+			*old_keycode = k[index];
+			k[index] = ke->keycode;
 			break;
 		}
 		case 2: {
 			u16 *k = (u16 *)dev->keycode;
-			old_keycode = k[scancode];
-			k[scancode] = keycode;
+			*old_keycode = k[index];
+			k[index] = ke->keycode;
 			break;
 		}
 		default: {
 			u32 *k = (u32 *)dev->keycode;
-			old_keycode = k[scancode];
-			k[scancode] = keycode;
+			*old_keycode = k[index];
+			k[index] = ke->keycode;
 			break;
 		}
 	}
 
-	__clear_bit(old_keycode, dev->keybit);
-	__set_bit(keycode, dev->keybit);
+	__clear_bit(*old_keycode, dev->keybit);
+	__set_bit(ke->keycode, dev->keybit);
 
 	for (i = 0; i < dev->keycodemax; i++) {
-		if (input_fetch_keycode(dev, i) == old_keycode) {
-			__set_bit(old_keycode, dev->keybit);
+		if (input_fetch_keycode(dev, i) == *old_keycode) {
+			__set_bit(*old_keycode, dev->keybit);
 			break; /* Setting the bit twice is useless, so break */
 		}
 	}
@@ -716,53 +779,86 @@ static int input_default_setkeycode(struct input_dev *dev,
 /**
  * input_get_keycode - retrieve keycode currently mapped to a given scancode
  * @dev: input device which keymap is being queried
- * @scancode: scancode (or its equivalent for device in question) for which
- *	keycode is needed
- * @keycode: result
+ * @ke: keymap entry
  *
  * This function should be called by anyone interested in retrieving current
- * keymap. Presently keyboard and evdev handlers use it.
+ * keymap. Presently evdev handlers use it.
  */
-int input_get_keycode(struct input_dev *dev,
-		      unsigned int scancode, unsigned int *keycode)
+int input_get_keycode(struct input_dev *dev, struct input_keymap_entry *ke)
 {
 	unsigned long flags;
 	int retval;
 
 	spin_lock_irqsave(&dev->event_lock, flags);
-	retval = dev->getkeycode(dev, scancode, keycode);
-	spin_unlock_irqrestore(&dev->event_lock, flags);
 
+	if (dev->getkeycode) {
+		/*
+		 * Support for legacy drivers, that don't implement the new
+		 * ioctls
+		 */
+		u32 scancode = ke->index;
+
+		memcpy(ke->scancode, &scancode, sizeof(scancode));
+		ke->len = sizeof(scancode);
+		retval = dev->getkeycode(dev, scancode, &ke->keycode);
+	} else {
+		retval = dev->getkeycode_new(dev, ke);
+	}
+
+	spin_unlock_irqrestore(&dev->event_lock, flags);
 	return retval;
 }
 EXPORT_SYMBOL(input_get_keycode);
 
 /**
- * input_get_keycode - assign new keycode to a given scancode
+ * input_set_keycode - attribute a keycode to a given scancode
  * @dev: input device which keymap is being updated
- * @scancode: scancode (or its equivalent for device in question)
- * @keycode: new keycode to be assigned to the scancode
+ * @ke: new keymap entry
  *
  * This function should be called by anyone needing to update current
  * keymap. Presently keyboard and evdev handlers use it.
  */
 int input_set_keycode(struct input_dev *dev,
-		      unsigned int scancode, unsigned int keycode)
+		      const struct input_keymap_entry *ke)
 {
 	unsigned long flags;
 	unsigned int old_keycode;
 	int retval;
 
-	if (keycode > KEY_MAX)
+	if (ke->keycode > KEY_MAX)
 		return -EINVAL;
 
 	spin_lock_irqsave(&dev->event_lock, flags);
 
-	retval = dev->getkeycode(dev, scancode, &old_keycode);
-	if (retval)
-		goto out;
+	if (dev->setkeycode) {
+		/*
+		 * Support for legacy drivers, that don't implement the new
+		 * ioctls
+		 */
+		unsigned int scancode;
+
+		retval = input_scancode_to_scalar(ke, &scancode);
+		if (retval)
+			goto out;
+
+		/*
+		 * We need to know the old scancode, in order to generate a
+		 * keyup effect, if the set operation happens successfully
+		 */
+		if (!dev->getkeycode) {
+			retval = -EINVAL;
+			goto out;
+		}
+
+		retval = dev->getkeycode(dev, scancode, &old_keycode);
+		if (retval)
+			goto out;
+
+		retval = dev->setkeycode(dev, scancode, ke->keycode);
+	} else {
+		retval = dev->setkeycode_new(dev, ke, &old_keycode);
+	}
 
-	retval = dev->setkeycode(dev, scancode, keycode);
 	if (retval)
 		goto out;
 
@@ -1601,7 +1697,7 @@ EXPORT_SYMBOL(input_free_device);
  *
  * This function allocates all necessary memory for MT slot handling in the
  * input device, and adds ABS_MT_SLOT to the device capabilities. All slots
- * are initially marked as unused iby setting ABS_MT_TRACKING_ID to -1.
+ * are initially marked as unused by setting ABS_MT_TRACKING_ID to -1.
  */
 int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots)
 {
@@ -1759,11 +1855,11 @@ int input_register_device(struct input_dev *dev)
 		dev->rep[REP_PERIOD] = 33;
 	}
 
-	if (!dev->getkeycode)
-		dev->getkeycode = input_default_getkeycode;
+	if (!dev->getkeycode && !dev->getkeycode_new)
+		dev->getkeycode_new = input_default_getkeycode;
 
-	if (!dev->setkeycode)
-		dev->setkeycode = input_default_setkeycode;
+	if (!dev->setkeycode && !dev->setkeycode_new)
+		dev->setkeycode_new = input_default_setkeycode;
 
 	dev_set_name(&dev->dev, "input%ld",
 		     (unsigned long) atomic_inc_return(&input_no) - 1);

drivers/input/keyboard/Kconfig

@@ -327,6 +327,16 @@ config KEYBOARD_NEWTON
 	  To compile this driver as a module, choose M here: the
 	  module will be called newtonkbd.
 
+config KEYBOARD_NOMADIK
+	tristate "ST-Ericsson Nomadik SKE keyboard"
+	depends on PLAT_NOMADIK
+	help
+	  Say Y here if you want to use a keypad provided on the SKE controller
+	  used on the Ux500 and Nomadik platforms
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called nmk-ske-keypad.
+
 config KEYBOARD_OPENCORES
 	tristate "OpenCores Keyboard Controller"
 	help
@@ -424,6 +434,15 @@ config KEYBOARD_OMAP
 	  To compile this driver as a module, choose M here: the
 	  module will be called omap-keypad.
 
+config KEYBOARD_OMAP4
+	tristate "TI OMAP4 keypad support"
+	depends on ARCH_OMAP4
+	help
+	  Say Y here if you want to use the OMAP4 keypad.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called omap4-keypad.
+
 config KEYBOARD_TWL4030
 	tristate "TI TWL4030/TWL5030/TPS659x0 keypad support"
 	depends on TWL4030_CORE

drivers/input/keyboard/Makefile

@@ -28,7 +28,9 @@ obj-$(CONFIG_KEYBOARD_MATRIX)		+= matrix_keypad.o
 obj-$(CONFIG_KEYBOARD_MAX7359)		+= max7359_keypad.o
 obj-$(CONFIG_KEYBOARD_MCS)		+= mcs_touchkey.o
 obj-$(CONFIG_KEYBOARD_NEWTON)		+= newtonkbd.o
+obj-$(CONFIG_KEYBOARD_NOMADIK)		+= nomadik-ske-keypad.o
 obj-$(CONFIG_KEYBOARD_OMAP)		+= omap-keypad.o
+obj-$(CONFIG_KEYBOARD_OMAP4)		+= omap4-keypad.o
 obj-$(CONFIG_KEYBOARD_OPENCORES)	+= opencores-kbd.o
 obj-$(CONFIG_KEYBOARD_PXA27x)		+= pxa27x_keypad.o
 obj-$(CONFIG_KEYBOARD_PXA930_ROTARY)	+= pxa930_rotary.o

drivers/input/keyboard/adp5588-keys.c

@@ -660,7 +660,7 @@ static const struct dev_pm_ops adp5588_dev_pm_ops = {
 #endif
 
 static const struct i2c_device_id adp5588_id[] = {
-	{ KBUILD_MODNAME, 0 },
+	{ "adp5588-keys", 0 },
 	{ "adp5587-keys", 0 },
 	{ }
 };

drivers/input/keyboard/hil_kbd.c

@@ -570,6 +570,8 @@ static struct serio_device_id hil_dev_ids[] = {
 	{ 0 }
 };
 
+MODULE_DEVICE_TABLE(serio, hil_dev_ids);
+
 static struct serio_driver hil_serio_drv = {
 	.driver		= {
 		.name	= "hil_dev",

drivers/input/keyboard/omap4-keypad.c

+/*
+ * OMAP4 Keypad Driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * Author: Abraham Arce <x0066660@ti.com>
+ * Initial Code: Syed Rafiuddin <rafiuddin.syed@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+#include <plat/omap4-keypad.h>
+
+/* OMAP4 registers */
+#define OMAP4_KBD_REVISION		0x00
+#define OMAP4_KBD_SYSCONFIG		0x10
+#define OMAP4_KBD_SYSSTATUS		0x14
+#define OMAP4_KBD_IRQSTATUS		0x18
+#define OMAP4_KBD_IRQENABLE		0x1C
+#define OMAP4_KBD_WAKEUPENABLE		0x20
+#define OMAP4_KBD_PENDING		0x24
+#define OMAP4_KBD_CTRL			0x28
+#define OMAP4_KBD_DEBOUNCINGTIME	0x2C
+#define OMAP4_KBD_LONGKEYTIME		0x30
+#define OMAP4_KBD_TIMEOUT		0x34
+#define OMAP4_KBD_STATEMACHINE		0x38
+#define OMAP4_KBD_ROWINPUTS		0x3C
+#define OMAP4_KBD_COLUMNOUTPUTS		0x40
+#define OMAP4_KBD_FULLCODE31_0		0x44
+#define OMAP4_KBD_FULLCODE63_32		0x48
+
+/* OMAP4 bit definitions */
+#define OMAP4_DEF_IRQENABLE_EVENTEN	(1 << 0)
+#define OMAP4_DEF_IRQENABLE_LONGKEY	(1 << 1)
+#define OMAP4_DEF_IRQENABLE_TIMEOUTEN	(1 << 2)
+#define OMAP4_DEF_WUP_EVENT_ENA		(1 << 0)
+#define OMAP4_DEF_WUP_LONG_KEY_ENA	(1 << 1)
+#define OMAP4_DEF_CTRL_NOSOFTMODE	(1 << 1)
+#define OMAP4_DEF_CTRLPTVVALUE		(1 << 2)
+#define OMAP4_DEF_CTRLPTV		(1 << 1)
+
+/* OMAP4 values */
+#define OMAP4_VAL_IRQDISABLE		0x00
+#define OMAP4_VAL_DEBOUNCINGTIME	0x07
+#define OMAP4_VAL_FUNCTIONALCFG		0x1E
+
+#define OMAP4_MASK_IRQSTATUSDISABLE	0xFFFF
+
+struct omap4_keypad {
+	struct input_dev *input;
+
+	void __iomem *base;
+	int irq;
+
+	unsigned int rows;
+	unsigned int cols;
+	unsigned int row_shift;
+	unsigned char key_state[8];
+	unsigned short keymap[];
+};
+
+static void __devinit omap4_keypad_config(struct omap4_keypad *keypad_data)
+{
+	__raw_writel(OMAP4_VAL_FUNCTIONALCFG,
+			keypad_data->base + OMAP4_KBD_CTRL);
+	__raw_writel(OMAP4_VAL_DEBOUNCINGTIME,
+			keypad_data->base + OMAP4_KBD_DEBOUNCINGTIME);
+	__raw_writel(OMAP4_VAL_IRQDISABLE,
+			keypad_data->base + OMAP4_KBD_IRQSTATUS);
+	__raw_writel(OMAP4_DEF_IRQENABLE_EVENTEN | OMAP4_DEF_IRQENABLE_LONGKEY,
+			keypad_data->base + OMAP4_KBD_IRQENABLE);
+	__raw_writel(OMAP4_DEF_WUP_EVENT_ENA | OMAP4_DEF_WUP_LONG_KEY_ENA,
+			keypad_data->base + OMAP4_KBD_WAKEUPENABLE);
+}
+
+/* Interrupt handler */
+static irqreturn_t omap4_keypad_interrupt(int irq, void *dev_id)
+{
+	struct omap4_keypad *keypad_data = dev_id;
+	struct input_dev *input_dev = keypad_data->input;
+	unsigned char key_state[ARRAY_SIZE(keypad_data->key_state)];
+	unsigned int col, row, code, changed;
+	u32 *new_state = (u32 *) key_state;
+
+	/* Disable interrupts */
+	__raw_writel(OMAP4_VAL_IRQDISABLE,
+		     keypad_data->base + OMAP4_KBD_IRQENABLE);
+
+	*new_state = __raw_readl(keypad_data->base + OMAP4_KBD_FULLCODE31_0);
+	*(new_state + 1) = __raw_readl(keypad_data->base
+						+ OMAP4_KBD_FULLCODE63_32);
+
+	for (row = 0; row < keypad_data->rows; row++) {
+		changed = key_state[row] ^ keypad_data->key_state[row];
+		if (!changed)
+			continue;
+
+		for (col = 0; col < keypad_data->cols; col++) {
+			if (changed & (1 << col)) {
+				code = MATRIX_SCAN_CODE(row, col,
+						keypad_data->row_shift);
+				input_event(input_dev, EV_MSC, MSC_SCAN, code);
+				input_report_key(input_dev,
+						 keypad_data->keymap[code],
+						 key_state[row] & (1 << col));
+			}
+		}
+	}
+
+	input_sync(input_dev);
+
+	memcpy(keypad_data->key_state, key_state,
+		sizeof(keypad_data->key_state));
+
+	/* clear pending interrupts */
+	__raw_writel(__raw_readl(keypad_data->base + OMAP4_KBD_IRQSTATUS),
+			keypad_data->base + OMAP4_KBD_IRQSTATUS);
+
+	/* enable interrupts */
+	__raw_writel(OMAP4_DEF_IRQENABLE_EVENTEN | OMAP4_DEF_IRQENABLE_LONGKEY,
+			keypad_data->base + OMAP4_KBD_IRQENABLE);
+
+	return IRQ_HANDLED;
+}
+
+static int __devinit omap4_keypad_probe(struct platform_device *pdev)
+{
+	const struct omap4_keypad_platform_data *pdata;
+	struct omap4_keypad *keypad_data;
+	struct input_dev *input_dev;
+	struct resource *res;
+	resource_size_t size;
+	unsigned int row_shift, max_keys;
+	int irq;
+	int error;
+
+	/* platform data */
+	pdata = pdev->dev.platform_data;
+	if (!pdata) {
+		dev_err(&pdev->dev, "no platform data defined\n");
+		return -EINVAL;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "no base address specified\n");
+		return -EINVAL;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (!irq) {
+		dev_err(&pdev->dev, "no keyboard irq assigned\n");
+		return -EINVAL;
+	}
+
+	if (!pdata->keymap_data) {
+		dev_err(&pdev->dev, "no keymap data defined\n");
+		return -EINVAL;
+	}
+
+	row_shift = get_count_order(pdata->cols);
+	max_keys = pdata->rows << row_shift;
+
+	keypad_data = kzalloc(sizeof(struct omap4_keypad) +
+				max_keys * sizeof(keypad_data->keymap[0]),
+			      GFP_KERNEL);
+	if (!keypad_data) {
+		dev_err(&pdev->dev, "keypad_data memory allocation failed\n");
+		return -ENOMEM;
+	}
+
+	size = resource_size(res);
+
+	res = request_mem_region(res->start, size, pdev->name);
+	if (!res) {
+		dev_err(&pdev->dev, "can't request mem region\n");
+		error = -EBUSY;
+		goto err_free_keypad;
+	}
+
+	keypad_data->base = ioremap(res->start, resource_size(res));
+	if (!keypad_data->base) {
+		dev_err(&pdev->dev, "can't ioremap mem resource\n");
+		error = -ENOMEM;
+		goto err_release_mem;
+	}
+
+	keypad_data->irq = irq;
+	keypad_data->row_shift = row_shift;
+	keypad_data->rows = pdata->rows;
+	keypad_data->cols = pdata->cols;
+
+	/* input device allocation */
+	keypad_data->input = input_dev = input_allocate_device();
+	if (!input_dev) {
+		error = -ENOMEM;
+		goto err_unmap;
+	}
+
+	input_dev->name = pdev->name;
+	input_dev->dev.parent = &pdev->dev;
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->id.vendor = 0x0001;
+	input_dev->id.product = 0x0001;
+	input_dev->id.version = 0x0001;
+
+	input_dev->keycode	= keypad_data->keymap;
+	input_dev->keycodesize	= sizeof(keypad_data->keymap[0]);
+	input_dev->keycodemax	= max_keys;
+
+	__set_bit(EV_KEY, input_dev->evbit);
+	__set_bit(EV_REP, input_dev->evbit);
+
+	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
+
+	input_set_drvdata(input_dev, keypad_data);
+
+	matrix_keypad_build_keymap(pdata->keymap_data, row_shift,
+			input_dev->keycode, input_dev->keybit);
+
+	omap4_keypad_config(keypad_data);
+
+	error = request_irq(keypad_data->irq, omap4_keypad_interrupt,
+			     IRQF_TRIGGER_RISING,
+			     "omap4-keypad", keypad_data);
+	if (error) {
+		dev_err(&pdev->dev, "failed to register interrupt\n");
+		goto err_free_input;
+	}
+
+	error = input_register_device(keypad_data->input);
+	if (error < 0) {
+		dev_err(&pdev->dev, "failed to register input device\n");
+		goto err_free_irq;
+	}
+
+
+	platform_set_drvdata(pdev, keypad_data);
+	return 0;
+
+err_free_irq:
+	free_irq(keypad_data->irq, keypad_data);
+err_free_input:
+	input_free_device(input_dev);
+err_unmap:
+	iounmap(keypad_data->base);
+err_release_mem:
+	release_mem_region(res->start, size);
+err_free_keypad:
+	kfree(keypad_data);
+	return error;
+}
+
+static int __devexit omap4_keypad_remove(struct platform_device *pdev)
+{
+	struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
+	struct resource *res;
+
+	free_irq(keypad_data->irq, keypad_data);
+	input_unregister_device(keypad_data->input);
+
+	iounmap(keypad_data->base);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(res->start, resource_size(res));
+
+	kfree(keypad_data);
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver omap4_keypad_driver = {
+	.probe		= omap4_keypad_probe,
+	.remove		= __devexit_p(omap4_keypad_remove),
+	.driver		= {
+		.name	= "omap4-keypad",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init omap4_keypad_init(void)
+{
+	return platform_driver_register(&omap4_keypad_driver);
+}
+module_init(omap4_keypad_init);
+
+static void __exit omap4_keypad_exit(void)
+{
+	platform_driver_unregister(&omap4_keypad_driver);
+}
+module_exit(omap4_keypad_exit);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("OMAP4 Keypad Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:omap4-keypad");

drivers/input/keyboard/twl4030_keypad.c

@@ -406,23 +406,22 @@ static int __devinit twl4030_kp_probe(struct platform_device *pdev)
 	if (error) {
 		dev_info(kp->dbg_dev, "request_irq failed for irq no=%d\n",
 			kp->irq);
-		goto err3;
+		goto err2;
 	}
 
 	/* Enable KP and TO interrupts now. */
 	reg = (u8) ~(KEYP_IMR1_KP | KEYP_IMR1_TO);
 	if (twl4030_kpwrite_u8(kp, reg, KEYP_IMR1)) {
 		error = -EIO;
-		goto err4;
+		goto err3;
 	}
 
 	platform_set_drvdata(pdev, kp);
 	return 0;
 
-err4:
+err3:
 	/* mask all events - we don't care about the result */
 	(void) twl4030_kpwrite_u8(kp, 0xff, KEYP_IMR1);
-err3:
 	free_irq(kp->irq, NULL);
 err2:
 	input_unregister_device(input);

drivers/input/misc/Kconfig

@@ -22,6 +22,16 @@ config INPUT_88PM860X_ONKEY
 	  To compile this driver as a module, choose M here: the module
 	  will be called 88pm860x_onkey.
 
+config INPUT_AB8500_PONKEY
+	tristate "AB8500 Pon (PowerOn) Key"
+	depends on AB8500_CORE
+	help
+	  Say Y here to use the PowerOn Key for ST-Ericsson's AB8500
+	  Mix-Sig PMIC.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called ab8500-ponkey.
+
 config INPUT_AD714X
 	tristate "Analog Devices AD714x Capacitance Touch Sensor"
 	help

drivers/input/misc/Makefile

@@ -5,6 +5,7 @@
 # Each configuration option enables a list of files.
 
 obj-$(CONFIG_INPUT_88PM860X_ONKEY)	+= 88pm860x_onkey.o
+obj-$(CONFIG_INPUT_AB8500_PONKEY)	+= ab8500-ponkey.o
 obj-$(CONFIG_INPUT_AD714X)		+= ad714x.o
 obj-$(CONFIG_INPUT_AD714X_I2C)		+= ad714x-i2c.o
 obj-$(CONFIG_INPUT_AD714X_SPI)		+= ad714x-spi.o

drivers/input/misc/ab8500-ponkey.c

+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
+ *
+ * AB8500 Power-On Key handler
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/ab8500.h>
+#include <linux/slab.h>
+
+/**
+ * struct ab8500_ponkey - ab8500 ponkey information
+ * @input_dev: pointer to input device
+ * @ab8500: ab8500 parent
+ * @irq_dbf: irq number for falling transition
+ * @irq_dbr: irq number for rising transition
+ */
+struct ab8500_ponkey {
+	struct input_dev	*idev;
+	struct ab8500		*ab8500;
+	int			irq_dbf;
+	int			irq_dbr;
+};
+
+/* AB8500 gives us an interrupt when ONKEY is held */
+static irqreturn_t ab8500_ponkey_handler(int irq, void *data)
+{
+	struct ab8500_ponkey *ponkey = data;
+
+	if (irq == ponkey->irq_dbf)
+		input_report_key(ponkey->idev, KEY_POWER, true);
+	else if (irq == ponkey->irq_dbr)
+		input_report_key(ponkey->idev, KEY_POWER, false);
+
+	input_sync(ponkey->idev);
+
+	return IRQ_HANDLED;
+}
+
+static int __devinit ab8500_ponkey_probe(struct platform_device *pdev)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
+	struct ab8500_ponkey *ponkey;
+	struct input_dev *input;
+	int irq_dbf, irq_dbr;
+	int error;
+
+	irq_dbf = platform_get_irq_byname(pdev, "ONKEY_DBF");
+	if (irq_dbf < 0) {
+		dev_err(&pdev->dev, "No IRQ for ONKEY_DBF, error=%d\n", irq_dbf);
+		return irq_dbf;
+	}
+
+	irq_dbr = platform_get_irq_byname(pdev, "ONKEY_DBR");
+	if (irq_dbr < 0) {
+		dev_err(&pdev->dev, "No IRQ for ONKEY_DBR, error=%d\n", irq_dbr);
+		return irq_dbr;
+	}
+
+	ponkey = kzalloc(sizeof(struct ab8500_ponkey), GFP_KERNEL);
+	input = input_allocate_device();
+	if (!ponkey || !input) {
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	ponkey->idev = input;
+	ponkey->ab8500 = ab8500;
+	ponkey->irq_dbf = irq_dbf;
+	ponkey->irq_dbr = irq_dbr;
+
+	input->name = "AB8500 POn(PowerOn) Key";
+	input->dev.parent = &pdev->dev;
+
+	input_set_capability(input, EV_KEY, KEY_POWER);
+
+	error = request_any_context_irq(ponkey->irq_dbf, ab8500_ponkey_handler,
+					0, "ab8500-ponkey-dbf", ponkey);
+	if (error < 0) {
+		dev_err(ab8500->dev, "Failed to request dbf IRQ#%d: %d\n",
+			ponkey->irq_dbf, error);
+		goto err_free_mem;
+	}
+
+	error = request_any_context_irq(ponkey->irq_dbr, ab8500_ponkey_handler,
+					0, "ab8500-ponkey-dbr", ponkey);
+	if (error < 0) {
+		dev_err(ab8500->dev, "Failed to request dbr IRQ#%d: %d\n",
+			ponkey->irq_dbr, error);
+		goto err_free_dbf_irq;
+	}
+
+	error = input_register_device(ponkey->idev);
+	if (error) {
+		dev_err(ab8500->dev, "Can't register input device: %d\n", error);
+		goto err_free_dbr_irq;
+	}
+
+	platform_set_drvdata(pdev, ponkey);
+	return 0;
+
+err_free_dbr_irq:
+	free_irq(ponkey->irq_dbr, ponkey);
+err_free_dbf_irq:
+	free_irq(ponkey->irq_dbf, ponkey);
+err_free_mem:
+	input_free_device(input);
+	kfree(ponkey);
+
+	return error;
+}
+
+static int __devexit ab8500_ponkey_remove(struct platform_device *pdev)
+{
+	struct ab8500_ponkey *ponkey = platform_get_drvdata(pdev);
+
+	free_irq(ponkey->irq_dbf, ponkey);
+	free_irq(ponkey->irq_dbr, ponkey);
+	input_unregister_device(ponkey->idev);
+	kfree(ponkey);
+
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver ab8500_ponkey_driver = {
+	.driver		= {
+		.name	= "ab8500-poweron-key",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= ab8500_ponkey_probe,
+	.remove		= __devexit_p(ab8500_ponkey_remove),
+};
+
+static int __init ab8500_ponkey_init(void)
+{
+	return platform_driver_register(&ab8500_ponkey_driver);
+}
+module_init(ab8500_ponkey_init);
+
+static void __exit ab8500_ponkey_exit(void)
+{
+	platform_driver_unregister(&ab8500_ponkey_driver);
+}
+module_exit(ab8500_ponkey_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
+MODULE_DESCRIPTION("ST-Ericsson AB8500 Power-ON(Pon) Key driver");

drivers/input/misc/ati_remote2.c

@@ -483,51 +483,88 @@ static void ati_remote2_complete_key(struct urb *urb)
 }
 
 static int ati_remote2_getkeycode(struct input_dev *idev,
-				  unsigned int scancode, unsigned int *keycode)
+				  struct input_keymap_entry *ke)
 {
 	struct ati_remote2 *ar2 = input_get_drvdata(idev);
 	unsigned int mode;
-	int index;
+	int offset;
+	unsigned int index;
+	unsigned int scancode;
+
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
+		index = ke->index;
+		if (index >= ATI_REMOTE2_MODES *
+				ARRAY_SIZE(ati_remote2_key_table))
+			return -EINVAL;
+
+		mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
+		offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
+		scancode = (mode << 8) + ati_remote2_key_table[offset].hw_code;
+	} else {
+		if (input_scancode_to_scalar(ke, &scancode))
+			return -EINVAL;
+
+		mode = scancode >> 8;
+		if (mode > ATI_REMOTE2_PC)
+			return -EINVAL;
+
+		offset = ati_remote2_lookup(scancode & 0xff);
+		if (offset < 0)
+			return -EINVAL;
+
+		index = mode * ARRAY_SIZE(ati_remote2_key_table) + offset;
+	}
 
-	mode = scancode >> 8;
-	if (mode > ATI_REMOTE2_PC || !((1 << mode) & ar2->mode_mask))
-		return -EINVAL;
+	ke->keycode = ar2->keycode[mode][offset];
+	ke->len = sizeof(scancode);
+	memcpy(&ke->scancode, &scancode, sizeof(scancode));
+	ke->index = index;
 
-	index = ati_remote2_lookup(scancode & 0xFF);
-	if (index < 0)
-		return -EINVAL;
-
-	*keycode = ar2->keycode[mode][index];
 	return 0;
 }
 
 static int ati_remote2_setkeycode(struct input_dev *idev,
-				  unsigned int scancode, unsigned int keycode)
+				  const struct input_keymap_entry *ke,
+				  unsigned int *old_keycode)
 {
 	struct ati_remote2 *ar2 = input_get_drvdata(idev);
-	unsigned int mode, old_keycode;
-	int index;
-
-	mode = scancode >> 8;
-	if (mode > ATI_REMOTE2_PC || !((1 << mode) & ar2->mode_mask))
-		return -EINVAL;
-
-	index = ati_remote2_lookup(scancode & 0xFF);
-	if (index < 0)
-		return -EINVAL;
+	unsigned int mode;
+	int offset;
+	unsigned int index;
+	unsigned int scancode;
+
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
+		if (ke->index >= ATI_REMOTE2_MODES *
+				ARRAY_SIZE(ati_remote2_key_table))
+			return -EINVAL;
+
+		mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
+		offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
+	} else {
+		if (input_scancode_to_scalar(ke, &scancode))
+			return -EINVAL;
+
+		mode = scancode >> 8;
+		if (mode > ATI_REMOTE2_PC)
+			return -EINVAL;
+
+		offset = ati_remote2_lookup(scancode & 0xff);
+		if (offset < 0)
+			return -EINVAL;
+	}
 
-	old_keycode = ar2->keycode[mode][index];
-	ar2->keycode[mode][index] = keycode;
-	__set_bit(keycode, idev->keybit);
+	*old_keycode = ar2->keycode[mode][offset];
+	ar2->keycode[mode][offset] = ke->keycode;
+	__set_bit(ke->keycode, idev->keybit);
 
 	for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) {
 		for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) {
-			if (ar2->keycode[mode][index] == old_keycode)
+			if (ar2->keycode[mode][index] == *old_keycode)
 				return 0;
 		}
 	}
 
-	__clear_bit(old_keycode, idev->keybit);
+	__clear_bit(*old_keycode, idev->keybit);
 
 	return 0;
 }
@@ -575,8 +612,8 @@ static int ati_remote2_input_init(struct ati_remote2 *ar2)
 	idev->open = ati_remote2_open;
 	idev->close = ati_remote2_close;
 
-	idev->getkeycode = ati_remote2_getkeycode;
-	idev->setkeycode = ati_remote2_setkeycode;
+	idev->getkeycode_new = ati_remote2_getkeycode;
+	idev->setkeycode_new = ati_remote2_setkeycode;
 
 	idev->name = ar2->name;
 	idev->phys = ar2->phys;

drivers/input/misc/powermate.c

@@ -280,7 +280,7 @@ static int powermate_alloc_buffers(struct usb_device *udev, struct powermate_dev
 
 	pm->configcr = kmalloc(sizeof(*(pm->configcr)), GFP_KERNEL);
 	if (!pm->configcr)
-		return -1;
+		return -ENOMEM;
 
 	return 0;
 }

drivers/input/mouse/elantech.c

@@ -699,7 +699,7 @@ int elantech_init(struct psmouse *psmouse)
 
 	psmouse->private = etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL);
 	if (!etd)
-		return -1;
+		return -ENOMEM;
 
 	etd->parity[0] = 1;
 	for (i = 1; i < 256; i++)

drivers/input/mouse/psmouse-base.c

@@ -1584,10 +1584,10 @@ static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, co
 	if (!new_dev)
 		return -ENOMEM;
 
-	while (serio->child) {
+	while (!list_empty(&serio->children)) {
 		if (++retry > 3) {
 			printk(KERN_WARNING
-				"psmouse: failed to destroy child port, "
+				"psmouse: failed to destroy children ports, "
 				"protocol change aborted.\n");
 			input_free_device(new_dev);
 			return -EIO;

drivers/input/mouse/synaptics.c

@@ -294,7 +294,29 @@ static int synaptics_pt_write(struct serio *serio, unsigned char c)
 	return 0;
 }
 
-static inline int synaptics_is_pt_packet(unsigned char *buf)
+static int synaptics_pt_start(struct serio *serio)
+{
+	struct psmouse *parent = serio_get_drvdata(serio->parent);
+	struct synaptics_data *priv = parent->private;
+
+	serio_pause_rx(parent->ps2dev.serio);
+	priv->pt_port = serio;
+	serio_continue_rx(parent->ps2dev.serio);
+
+	return 0;
+}
+
+static void synaptics_pt_stop(struct serio *serio)
+{
+	struct psmouse *parent = serio_get_drvdata(serio->parent);
+	struct synaptics_data *priv = parent->private;
+
+	serio_pause_rx(parent->ps2dev.serio);
+	priv->pt_port = NULL;
+	serio_continue_rx(parent->ps2dev.serio);
+}
+
+static int synaptics_is_pt_packet(unsigned char *buf)
 {
 	return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
 }
@@ -315,9 +337,8 @@ static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet
 
 static void synaptics_pt_activate(struct psmouse *psmouse)
 {
-	struct serio *ptport = psmouse->ps2dev.serio->child;
-	struct psmouse *child = serio_get_drvdata(ptport);
 	struct synaptics_data *priv = psmouse->private;
+	struct psmouse *child = serio_get_drvdata(priv->pt_port);
 
 	/* adjust the touchpad to child's choice of protocol */
 	if (child) {
@@ -345,6 +366,8 @@ static void synaptics_pt_create(struct psmouse *psmouse)
 	strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
 	strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
 	serio->write = synaptics_pt_write;
+	serio->start = synaptics_pt_start;
+	serio->stop = synaptics_pt_stop;
 	serio->parent = psmouse->ps2dev.serio;
 
 	psmouse->pt_activate = synaptics_pt_activate;
@@ -578,9 +601,10 @@ static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
 		if (unlikely(priv->pkt_type == SYN_NEWABS))
 			priv->pkt_type = synaptics_detect_pkt_type(psmouse);
 
-		if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
-			if (psmouse->ps2dev.serio->child)
-				synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
+		if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
+		    synaptics_is_pt_packet(psmouse->packet)) {
+			if (priv->pt_port)
+				synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
 		} else
 			synaptics_process_packet(psmouse);
 
@@ -731,7 +755,7 @@ int synaptics_init(struct psmouse *psmouse)
 
 	psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 	if (!priv)
-		return -1;
+		return -ENOMEM;
 
 	psmouse_reset(psmouse);
 

drivers/input/mouse/synaptics.h

@@ -110,6 +110,8 @@ struct synaptics_data {
 	unsigned char pkt_type;			/* packet type - old, new, etc */
 	unsigned char mode;			/* current mode byte */
 	int scroll;
+
+	struct serio *pt_port;			/* Pass-through serio port */
 };
 
 void synaptics_module_init(void);

drivers/input/mouse/trackpoint.c

@@ -303,7 +303,7 @@ int trackpoint_detect(struct psmouse *psmouse, bool set_properties)
 
 	psmouse->private = kzalloc(sizeof(struct trackpoint_data), GFP_KERNEL);
 	if (!psmouse->private)
-		return -1;
+		return -ENOMEM;
 
 	psmouse->vendor = "IBM";
 	psmouse->name = "TrackPoint";

drivers/input/mousedev.c

@@ -866,7 +866,7 @@ static struct mousedev *mousedev_create(struct input_dev *dev,
 	spin_lock_init(&mousedev->client_lock);
 	mutex_init(&mousedev->mutex);
 	lockdep_set_subclass(&mousedev->mutex,
-			     minor == MOUSEDEV_MIX ? MOUSEDEV_MIX : 0);
+			     minor == MOUSEDEV_MIX ? SINGLE_DEPTH_NESTING : 0);
 	init_waitqueue_head(&mousedev->wait);
 
 	if (minor == MOUSEDEV_MIX)

drivers/input/serio/Kconfig

@@ -226,4 +226,13 @@ config SERIO_AMS_DELTA
 	  To compile this driver as a module, choose M here;
 	  the module will be called ams_delta_serio.
 
+config SERIO_PS2MULT
+	tristate "TQC PS/2 multiplexer"
+	help
+	  Say Y here if you have the PS/2 line multiplexer like the one
+	  present on TQC boads.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ps2mult.
+
 endif

drivers/input/serio/Makefile

@@ -18,6 +18,7 @@ obj-$(CONFIG_SERIO_GSCPS2)	+= gscps2.o
 obj-$(CONFIG_HP_SDC)		+= hp_sdc.o
 obj-$(CONFIG_HIL_MLC)		+= hp_sdc_mlc.o hil_mlc.o
 obj-$(CONFIG_SERIO_PCIPS2)	+= pcips2.o
+obj-$(CONFIG_SERIO_PS2MULT)	+= ps2mult.o
 obj-$(CONFIG_SERIO_MACEPS2)	+= maceps2.o
 obj-$(CONFIG_SERIO_LIBPS2)	+= libps2.o
 obj-$(CONFIG_SERIO_RAW)		+= serio_raw.o

drivers/input/serio/i8042.c

@@ -1063,7 +1063,7 @@ static long i8042_panic_blink(int state)
 #ifdef CONFIG_X86
 static void i8042_dritek_enable(void)
 {
-	char param = 0x90;
+	unsigned char param = 0x90;
 	int error;
 
 	error = i8042_command(&param, 0x1059);

drivers/input/serio/ps2mult.c

+/*
+ * TQC PS/2 Multiplexer driver
+ *
+ * Copyright (C) 2010 Dmitry Eremin-Solenikov
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/serio.h>
+
+MODULE_AUTHOR("Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>");
+MODULE_DESCRIPTION("TQC PS/2 Multiplexer driver");
+MODULE_LICENSE("GPL");
+
+#define PS2MULT_KB_SELECTOR		0xA0
+#define PS2MULT_MS_SELECTOR		0xA1
+#define PS2MULT_ESCAPE			0x7D
+#define PS2MULT_BSYNC			0x7E
+#define PS2MULT_SESSION_START		0x55
+#define PS2MULT_SESSION_END		0x56
+
+struct ps2mult_port {
+	struct serio *serio;
+	unsigned char sel;
+	bool registered;
+};
+
+#define PS2MULT_NUM_PORTS	2
+#define PS2MULT_KBD_PORT	0
+#define PS2MULT_MOUSE_PORT	1
+
+struct ps2mult {
+	struct serio *mx_serio;
+	struct ps2mult_port ports[PS2MULT_NUM_PORTS];
+
+	spinlock_t lock;
+	struct ps2mult_port *in_port;
+	struct ps2mult_port *out_port;
+	bool escape;
+};
+
+/* First MUST come PS2MULT_NUM_PORTS selectors */
+static const unsigned char ps2mult_controls[] = {
+	PS2MULT_KB_SELECTOR, PS2MULT_MS_SELECTOR,
+	PS2MULT_ESCAPE, PS2MULT_BSYNC,
+	PS2MULT_SESSION_START, PS2MULT_SESSION_END,
+};
+
+static const struct serio_device_id ps2mult_serio_ids[] = {
+	{
+		.type	= SERIO_RS232,
+		.proto	= SERIO_PS2MULT,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, ps2mult_serio_ids);
+
+static void ps2mult_select_port(struct ps2mult *psm, struct ps2mult_port *port)
+{
+	struct serio *mx_serio = psm->mx_serio;
+
+	serio_write(mx_serio, port->sel);
+	psm->out_port = port;
+	dev_dbg(&mx_serio->dev, "switched to sel %02x\n", port->sel);
+}
+
+static int ps2mult_serio_write(struct serio *serio, unsigned char data)
+{
+	struct serio *mx_port = serio->parent;
+	struct ps2mult *psm = serio_get_drvdata(mx_port);
+	struct ps2mult_port *port = serio->port_data;
+	bool need_escape;
+	unsigned long flags;
+
+	spin_lock_irqsave(&psm->lock, flags);
+
+	if (psm->out_port != port)
+		ps2mult_select_port(psm, port);
+
+	need_escape = memchr(ps2mult_controls, data, sizeof(ps2mult_controls));
+
+	dev_dbg(&serio->dev,
+		"write: %s%02x\n", need_escape ? "ESC " : "", data);
+
+	if (need_escape)
+		serio_write(mx_port, PS2MULT_ESCAPE);
+
+	serio_write(mx_port, data);
+
+	spin_unlock_irqrestore(&psm->lock, flags);
+
+	return 0;
+}
+
+static int ps2mult_serio_start(struct serio *serio)
+{
+	struct ps2mult *psm = serio_get_drvdata(serio->parent);
+	struct ps2mult_port *port = serio->port_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&psm->lock, flags);
+	port->registered = true;
+	spin_unlock_irqrestore(&psm->lock, flags);
+
+	return 0;
+}
+
+static void ps2mult_serio_stop(struct serio *serio)
+{
+	struct ps2mult *psm = serio_get_drvdata(serio->parent);
+	struct ps2mult_port *port = serio->port_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&psm->lock, flags);
+	port->registered = false;
+	spin_unlock_irqrestore(&psm->lock, flags);
+}
+
+static int ps2mult_create_port(struct ps2mult *psm, int i)
+{
+	struct serio *mx_serio = psm->mx_serio;
+	struct serio *serio;
+
+	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
+	if (!serio)
+		return -ENOMEM;
+
+	strlcpy(serio->name, "TQC PS/2 Multiplexer", sizeof(serio->name));
+	snprintf(serio->phys, sizeof(serio->phys),
+		 "%s/port%d", mx_serio->phys, i);
+	serio->id.type = SERIO_8042;
+	serio->write = ps2mult_serio_write;
+	serio->start = ps2mult_serio_start;
+	serio->stop = ps2mult_serio_stop;
+	serio->parent = psm->mx_serio;
+	serio->port_data = &psm->ports[i];
+
+	psm->ports[i].serio = serio;
+
+	return 0;
+}
+
+static void ps2mult_reset(struct ps2mult *psm)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&psm->lock, flags);
+
+	serio_write(psm->mx_serio, PS2MULT_SESSION_END);
+	serio_write(psm->mx_serio, PS2MULT_SESSION_START);
+
+	ps2mult_select_port(psm, &psm->ports[PS2MULT_KBD_PORT]);
+
+	spin_unlock_irqrestore(&psm->lock, flags);
+}
+
+static int ps2mult_connect(struct serio *serio, struct serio_driver *drv)
+{
+	struct ps2mult *psm;
+	int i;
+	int error;
+
+	if (!serio->write)
+		return -EINVAL;
+
+	psm = kzalloc(sizeof(*psm), GFP_KERNEL);
+	if (!psm)
+		return -ENOMEM;
+
+	spin_lock_init(&psm->lock);
+	psm->mx_serio = serio;
+
+	for (i = 0; i < PS2MULT_NUM_PORTS; i++) {
+		psm->ports[i].sel = ps2mult_controls[i];
+		error = ps2mult_create_port(psm, i);
+		if (error)
+			goto err_out;
+	}
+
+	psm->in_port = psm->out_port = &psm->ports[PS2MULT_KBD_PORT];
+
+	serio_set_drvdata(serio, psm);
+	error = serio_open(serio, drv);
+	if (error)
+		goto err_out;
+
+	ps2mult_reset(psm);
+
+	for (i = 0; i <  PS2MULT_NUM_PORTS; i++) {
+		struct serio *s = psm->ports[i].serio;
+
+		dev_info(&serio->dev, "%s port at %s\n", s->name, serio->phys);
+		serio_register_port(s);
+	}
+
+	return 0;
+
+err_out:
+	while (--i >= 0)
+		kfree(psm->ports[i].serio);
+	kfree(serio);
+	return error;
+}
+
+static void ps2mult_disconnect(struct serio *serio)
+{
+	struct ps2mult *psm = serio_get_drvdata(serio);
+
+	/* Note that serio core already take care of children ports */
+	serio_write(serio, PS2MULT_SESSION_END);
+	serio_close(serio);
+	kfree(psm);
+
+	serio_set_drvdata(serio, NULL);
+}
+
+static int ps2mult_reconnect(struct serio *serio)
+{
+	struct ps2mult *psm = serio_get_drvdata(serio);
+
+	ps2mult_reset(psm);
+
+	return 0;
+}
+
+static irqreturn_t ps2mult_interrupt(struct serio *serio,
+				     unsigned char data, unsigned int dfl)
+{
+	struct ps2mult *psm = serio_get_drvdata(serio);
+	struct ps2mult_port *in_port;
+	unsigned long flags;
+
+	dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, dfl);
+
+	spin_lock_irqsave(&psm->lock, flags);
+
+	if (psm->escape) {
+		psm->escape = false;
+		in_port = psm->in_port;
+		if (in_port->registered)
+			serio_interrupt(in_port->serio, data, dfl);
+		goto out;
+	}
+
+	switch (data) {
+	case PS2MULT_ESCAPE:
+		dev_dbg(&serio->dev, "ESCAPE\n");
+		psm->escape = true;
+		break;
+
+	case PS2MULT_BSYNC:
+		dev_dbg(&serio->dev, "BSYNC\n");
+		psm->in_port = psm->out_port;
+		break;
+
+	case PS2MULT_SESSION_START:
+		dev_dbg(&serio->dev, "SS\n");
+		break;
+
+	case PS2MULT_SESSION_END:
+		dev_dbg(&serio->dev, "SE\n");
+		break;
+
+	case PS2MULT_KB_SELECTOR:
+		dev_dbg(&serio->dev, "KB\n");
+		psm->in_port = &psm->ports[PS2MULT_KBD_PORT];
+		break;
+
+	case PS2MULT_MS_SELECTOR:
+		dev_dbg(&serio->dev, "MS\n");
+		psm->in_port = &psm->ports[PS2MULT_MOUSE_PORT];
+		break;
+
+	default:
+		in_port = psm->in_port;
+		if (in_port->registered)
+			serio_interrupt(in_port->serio, data, dfl);
+		break;
+	}
+
+ out:
+	spin_unlock_irqrestore(&psm->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static struct serio_driver ps2mult_drv = {
+	.driver		= {
+		.name	= "ps2mult",
+	},
+	.description	= "TQC PS/2 Multiplexer driver",
+	.id_table	= ps2mult_serio_ids,
+	.interrupt	= ps2mult_interrupt,
+	.connect	= ps2mult_connect,
+	.disconnect	= ps2mult_disconnect,
+	.reconnect	= ps2mult_reconnect,
+};
+
+static int __init ps2mult_init(void)
+{
+	return serio_register_driver(&ps2mult_drv);
+}
+
+static void __exit ps2mult_exit(void)
+{
+	serio_unregister_driver(&ps2mult_drv);
+}
+
+module_init(ps2mult_init);
+module_exit(ps2mult_exit);

drivers/input/serio/serio.c

@@ -37,7 +37,6 @@
 #include <linux/slab.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
-#include <linux/freezer.h>
 
 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 MODULE_DESCRIPTION("Serio abstraction core");
@@ -56,7 +55,7 @@ static struct bus_type serio_bus;
 static void serio_add_port(struct serio *serio);
 static int serio_reconnect_port(struct serio *serio);
 static void serio_disconnect_port(struct serio *serio);
-static void serio_reconnect_chain(struct serio *serio);
+static void serio_reconnect_subtree(struct serio *serio);
 static void serio_attach_driver(struct serio_driver *drv);
 
 static int serio_connect_driver(struct serio *serio, struct serio_driver *drv)
@@ -152,7 +151,7 @@ static void serio_find_driver(struct serio *serio)
 enum serio_event_type {
 	SERIO_RESCAN_PORT,
 	SERIO_RECONNECT_PORT,
-	SERIO_RECONNECT_CHAIN,
+	SERIO_RECONNECT_SUBTREE,
 	SERIO_REGISTER_PORT,
 	SERIO_ATTACH_DRIVER,
 };
@@ -292,8 +291,8 @@ static void serio_handle_event(void)
 			serio_find_driver(event->object);
 			break;
 
-		case SERIO_RECONNECT_CHAIN:
-			serio_reconnect_chain(event->object);
+		case SERIO_RECONNECT_SUBTREE:
+			serio_reconnect_subtree(event->object);
 			break;
 
 		case SERIO_ATTACH_DRIVER:
@@ -330,12 +329,10 @@ static void serio_remove_pending_events(void *object)
 }
 
 /*
- * Destroy child serio port (if any) that has not been fully registered yet.
+ * Locate child serio port (if any) that has not been fully registered yet.
  *
- * Note that we rely on the fact that port can have only one child and therefore
- * only one child registration request can be pending. Additionally, children
- * are registered by driver's connect() handler so there can't be a grandchild
- * pending registration together with a child.
+ * Children are registered by driver's connect() handler so there can't be a
+ * grandchild pending registration together with a child.
  */
 static struct serio *serio_get_pending_child(struct serio *parent)
 {
@@ -449,7 +446,7 @@ static ssize_t serio_rebind_driver(struct device *dev, struct device_attribute *
 	if (!strncmp(buf, "none", count)) {
 		serio_disconnect_port(serio);
 	} else if (!strncmp(buf, "reconnect", count)) {
-		serio_reconnect_chain(serio);
+		serio_reconnect_subtree(serio);
 	} else if (!strncmp(buf, "rescan", count)) {
 		serio_disconnect_port(serio);
 		serio_find_driver(serio);
@@ -516,6 +513,8 @@ static void serio_init_port(struct serio *serio)
 	__module_get(THIS_MODULE);
 
 	INIT_LIST_HEAD(&serio->node);
+	INIT_LIST_HEAD(&serio->child_node);
+	INIT_LIST_HEAD(&serio->children);
 	spin_lock_init(&serio->lock);
 	mutex_init(&serio->drv_mutex);
 	device_initialize(&serio->dev);
@@ -538,12 +537,13 @@ static void serio_init_port(struct serio *serio)
  */
 static void serio_add_port(struct serio *serio)
 {
+	struct serio *parent = serio->parent;
 	int error;
 
-	if (serio->parent) {
-		serio_pause_rx(serio->parent);
-		serio->parent->child = serio;
-		serio_continue_rx(serio->parent);
+	if (parent) {
+		serio_pause_rx(parent);
+		list_add_tail(&serio->child_node, &parent->children);
+		serio_continue_rx(parent);
 	}
 
 	list_add_tail(&serio->node, &serio_list);
@@ -559,15 +559,14 @@ static void serio_add_port(struct serio *serio)
 }
 
 /*
- * serio_destroy_port() completes deregistration process and removes
+ * serio_destroy_port() completes unregistration process and removes
  * port from the system
  */
 static void serio_destroy_port(struct serio *serio)
 {
 	struct serio *child;
 
-	child = serio_get_pending_child(serio);
-	if (child) {
+	while ((child = serio_get_pending_child(serio)) != NULL) {
 		serio_remove_pending_events(child);
 		put_device(&child->dev);
 	}
@@ -577,7 +576,7 @@ static void serio_destroy_port(struct serio *serio)
 
 	if (serio->parent) {
 		serio_pause_rx(serio->parent);
-		serio->parent->child = NULL;
+		list_del_init(&serio->child_node);
 		serio_continue_rx(serio->parent);
 		serio->parent = NULL;
 	}
@@ -609,46 +608,82 @@ static int serio_reconnect_port(struct serio *serio)
 }
 
 /*
- * Reconnect serio port and all its children (re-initialize attached devices)
+ * Reconnect serio port and all its children (re-initialize attached
+ * devices).
  */
-static void serio_reconnect_chain(struct serio *serio)
+static void serio_reconnect_subtree(struct serio *root)
 {
+	struct serio *s = root;
+	int error;
+
 	do {
-		if (serio_reconnect_port(serio)) {
-			/* Ok, old children are now gone, we are done */
-			break;
+		error = serio_reconnect_port(s);
+		if (!error) {
+			/*
+			 * Reconnect was successful, move on to do the
+			 * first child.
+			 */
+			if (!list_empty(&s->children)) {
+				s = list_first_entry(&s->children,
+						     struct serio, child_node);
+				continue;
+			}
 		}
-		serio = serio->child;
-	} while (serio);
+
+		/*
+		 * Either it was a leaf node or reconnect failed and it
+		 * became a leaf node. Continue reconnecting starting with
+		 * the next sibling of the parent node.
+		 */
+		while (s != root) {
+			struct serio *parent = s->parent;
+
+			if (!list_is_last(&s->child_node, &parent->children)) {
+				s = list_entry(s->child_node.next,
+					       struct serio, child_node);
+				break;
+			}
+
+			s = parent;
+		}
+	} while (s != root);
 }
 
 /*
  * serio_disconnect_port() unbinds a port from its driver. As a side effect
- * all child ports are unbound and destroyed.
+ * all children ports are unbound and destroyed.
  */
 static void serio_disconnect_port(struct serio *serio)
 {
-	struct serio *s, *parent;
+	struct serio *s = serio;
+
+	/*
+	 * Children ports should be disconnected and destroyed
+	 * first; we travel the tree in depth-first order.
+	 */
+	while (!list_empty(&serio->children)) {
+
+		/* Locate a leaf */
+		while (!list_empty(&s->children))
+			s = list_first_entry(&s->children,
+					     struct serio, child_node);
 
-	if (serio->child) {
 		/*
-		 * Children ports should be disconnected and destroyed
-		 * first, staring with the leaf one, since we don't want
-		 * to do recursion
+		 * Prune this leaf node unless it is the one we
+		 * started with.
 		 */
-		for (s = serio; s->child; s = s->child)
-			/* empty */;
-
-		do {
-			parent = s->parent;
+		if (s != serio) {
+			struct serio *parent = s->parent;
 
 			device_release_driver(&s->dev);
 			serio_destroy_port(s);
-		} while ((s = parent) != serio);
+
+			s = parent;
+		}
 	}
 
 	/*
-	 * Ok, no children left, now disconnect this port
+	 * OK, no children left, now disconnect this port.
 	 */
 	device_release_driver(&serio->dev);
 }
@@ -661,7 +696,7 @@ EXPORT_SYMBOL(serio_rescan);
 
 void serio_reconnect(struct serio *serio)
 {
-	serio_queue_event(serio, NULL, SERIO_RECONNECT_CHAIN);
+	serio_queue_event(serio, NULL, SERIO_RECONNECT_SUBTREE);
 }
 EXPORT_SYMBOL(serio_reconnect);
 
@@ -689,14 +724,16 @@ void serio_unregister_port(struct serio *serio)
 EXPORT_SYMBOL(serio_unregister_port);
 
 /*
- * Safely unregisters child port if one is present.
+ * Safely unregisters children ports if they are present.
  */
 void serio_unregister_child_port(struct serio *serio)
 {
+	struct serio *s, *next;
+
 	mutex_lock(&serio_mutex);
-	if (serio->child) {
-		serio_disconnect_port(serio->child);
-		serio_destroy_port(serio->child);
+	list_for_each_entry_safe(s, next, &serio->children, child_node) {
+		serio_disconnect_port(s);
+		serio_destroy_port(s);
 	}
 	mutex_unlock(&serio_mutex);
 }

drivers/input/sparse-keymap.c

@@ -22,6 +22,37 @@ MODULE_DESCRIPTION("Generic support for sparse keymaps");
 MODULE_LICENSE("GPL v2");
 MODULE_VERSION("0.1");
 
+static unsigned int sparse_keymap_get_key_index(struct input_dev *dev,
+						const struct key_entry *k)
+{
+	struct key_entry *key;
+	unsigned int idx = 0;
+
+	for (key = dev->keycode; key->type != KE_END; key++) {
+		if (key->type == KE_KEY) {
+			if (key == k)
+				break;
+			idx++;
+		}
+	}
+
+	return idx;
+}
+
+static struct key_entry *sparse_keymap_entry_by_index(struct input_dev *dev,
+						      unsigned int index)
+{
+	struct key_entry *key;
+	unsigned int key_cnt = 0;
+
+	for (key = dev->keycode; key->type != KE_END; key++)
+		if (key->type == KE_KEY)
+			if (key_cnt++ == index)
+				return key;
+
+	return NULL;
+}
+
 /**
  * sparse_keymap_entry_from_scancode - perform sparse keymap lookup
  * @dev: Input device using sparse keymap
@@ -64,16 +95,36 @@ struct key_entry *sparse_keymap_entry_from_keycode(struct input_dev *dev,
 }
 EXPORT_SYMBOL(sparse_keymap_entry_from_keycode);
 
+static struct key_entry *sparse_keymap_locate(struct input_dev *dev,
+					const struct input_keymap_entry *ke)
+{
+	struct key_entry *key;
+	unsigned int scancode;
+
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX)
+		key = sparse_keymap_entry_by_index(dev, ke->index);
+	else if (input_scancode_to_scalar(ke, &scancode) == 0)
+		key = sparse_keymap_entry_from_scancode(dev, scancode);
+	else
+		key = NULL;
+
+	return key;
+}
+
 static int sparse_keymap_getkeycode(struct input_dev *dev,
-				    unsigned int scancode,
-				    unsigned int *keycode)
+				    struct input_keymap_entry *ke)
 {
 	const struct key_entry *key;
 
 	if (dev->keycode) {
-		key = sparse_keymap_entry_from_scancode(dev, scancode);
+		key = sparse_keymap_locate(dev, ke);
 		if (key && key->type == KE_KEY) {
-			*keycode = key->keycode;
+			ke->keycode = key->keycode;
+			if (!(ke->flags & INPUT_KEYMAP_BY_INDEX))
+				ke->index =
+					sparse_keymap_get_key_index(dev, key);
+			ke->len = sizeof(key->code);
+			memcpy(ke->scancode, &key->code, sizeof(key->code));
 			return 0;
 		}
 	}
@@ -82,20 +133,19 @@ static int sparse_keymap_getkeycode(struct input_dev *dev,
 }
 
 static int sparse_keymap_setkeycode(struct input_dev *dev,
-				    unsigned int scancode,
-				    unsigned int keycode)
+				    const struct input_keymap_entry *ke,
+				    unsigned int *old_keycode)
 {
 	struct key_entry *key;
-	int old_keycode;
 
 	if (dev->keycode) {
-		key = sparse_keymap_entry_from_scancode(dev, scancode);
+		key = sparse_keymap_locate(dev, ke);
 		if (key && key->type == KE_KEY) {
-			old_keycode = key->keycode;
-			key->keycode = keycode;
-			set_bit(keycode, dev->keybit);
-			if (!sparse_keymap_entry_from_keycode(dev, old_keycode))
-				clear_bit(old_keycode, dev->keybit);
+			*old_keycode = key->keycode;
+			key->keycode = ke->keycode;
+			set_bit(ke->keycode, dev->keybit);
+			if (!sparse_keymap_entry_from_keycode(dev, *old_keycode))
+				clear_bit(*old_keycode, dev->keybit);
 			return 0;
 		}
 	}
@@ -159,15 +209,14 @@ int sparse_keymap_setup(struct input_dev *dev,
 
 	dev->keycode = map;
 	dev->keycodemax = map_size;
-	dev->getkeycode = sparse_keymap_getkeycode;
-	dev->setkeycode = sparse_keymap_setkeycode;
+	dev->getkeycode_new = sparse_keymap_getkeycode;
+	dev->setkeycode_new = sparse_keymap_setkeycode;
 
 	return 0;
 
  err_out:
 	kfree(map);
 	return error;
-
 }
 EXPORT_SYMBOL(sparse_keymap_setup);
 

drivers/input/tablet/Kconfig

@@ -49,6 +49,17 @@ config TABLET_USB_GTCO
           To compile this driver as a module, choose M here: the
           module will be called gtco.
 
+config TABLET_USB_HANWANG
+	tristate "Hanwang Art Master III tablet support (USB)"
+	depends on USB_ARCH_HAS_HCD
+	select USB
+	help
+	  Say Y here if you want to use the USB version of the Hanwang Art
+	  Master III tablet.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hanwang.
+
 config TABLET_USB_KBTAB
 	tristate "KB Gear JamStudio tablet support (USB)"
 	depends on USB_ARCH_HAS_HCD

drivers/input/tablet/Makefile

@@ -8,5 +8,6 @@ wacom-objs	:= wacom_wac.o wacom_sys.o
 obj-$(CONFIG_TABLET_USB_ACECAD)	+= acecad.o
 obj-$(CONFIG_TABLET_USB_AIPTEK)	+= aiptek.o
 obj-$(CONFIG_TABLET_USB_GTCO)	+= gtco.o
+obj-$(CONFIG_TABLET_USB_HANWANG) += hanwang.o
 obj-$(CONFIG_TABLET_USB_KBTAB)	+= kbtab.o
 obj-$(CONFIG_TABLET_USB_WACOM)	+= wacom.o

drivers/input/tablet/wacom.h

@@ -118,6 +118,7 @@ struct wacom {
 extern const struct usb_device_id wacom_ids[];
 
 void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len);
+void wacom_setup_device_quirks(struct wacom_features *features);
 void wacom_setup_input_capabilities(struct input_dev *input_dev,
 				    struct wacom_wac *wacom_wac);
 #endif

drivers/input/tablet/wacom_sys.c

@@ -120,14 +120,16 @@ static int wacom_open(struct input_dev *dev)
 
 out:
 	mutex_unlock(&wacom->lock);
-	if (retval)
-		usb_autopm_put_interface(wacom->intf);
+	usb_autopm_put_interface(wacom->intf);
 	return retval;
 }
 
 static void wacom_close(struct input_dev *dev)
 {
 	struct wacom *wacom = input_get_drvdata(dev);
+	int autopm_error;
+
+	autopm_error = usb_autopm_get_interface(wacom->intf);
 
 	mutex_lock(&wacom->lock);
 	usb_kill_urb(wacom->irq);
@@ -135,7 +137,8 @@ static void wacom_close(struct input_dev *dev)
 	wacom->intf->needs_remote_wakeup = 0;
 	mutex_unlock(&wacom->lock);
 
-	usb_autopm_put_interface(wacom->intf);
+	if (!autopm_error)
+		usb_autopm_put_interface(wacom->intf);
 }
 
 static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hid_desc,
@@ -196,17 +199,30 @@ static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hi
 							features->pktlen = WACOM_PKGLEN_TPC2FG;
 							features->device_type = BTN_TOOL_TRIPLETAP;
 						}
-						features->x_max =
-							get_unaligned_le16(&report[i + 3]);
-						features->x_phy =
-							get_unaligned_le16(&report[i + 6]);
-						features->unit = report[i + 9];
-						features->unitExpo = report[i + 11];
-						i += 12;
+						if (features->type == BAMBOO_PT) {
+							/* need to reset back */
+							features->pktlen = WACOM_PKGLEN_BBTOUCH;
+							features->device_type = BTN_TOOL_TRIPLETAP;
+							features->x_phy =
+								get_unaligned_le16(&report[i + 5]);
+							features->x_max =
+								get_unaligned_le16(&report[i + 8]);
+							i += 15;
+						} else {
+							features->x_max =
+								get_unaligned_le16(&report[i + 3]);
+							features->x_phy =
+								get_unaligned_le16(&report[i + 6]);
+							features->unit = report[i + 9];
+							features->unitExpo = report[i + 11];
+							i += 12;
+						}
 					} else if (pen) {
 						/* penabled only accepts exact bytes of data */
 						if (features->type == TABLETPC2FG)
 							features->pktlen = WACOM_PKGLEN_GRAPHIRE;
+						if (features->type == BAMBOO_PT)
+							features->pktlen = WACOM_PKGLEN_BBFUN;
 						features->device_type = BTN_TOOL_PEN;
 						features->x_max =
 							get_unaligned_le16(&report[i + 3]);
@@ -235,6 +251,15 @@ static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hi
 							features->y_phy =
 								get_unaligned_le16(&report[i + 6]);
 							i += 7;
+						} else if (features->type == BAMBOO_PT) {
+							/* need to reset back */
+							features->pktlen = WACOM_PKGLEN_BBTOUCH;
+							features->device_type = BTN_TOOL_TRIPLETAP;
+							features->y_phy =
+								get_unaligned_le16(&report[i + 3]);
+							features->y_max =
+								get_unaligned_le16(&report[i + 6]);
+							i += 12;
 						} else {
 							features->y_max =
 								features->x_max;
@@ -246,6 +271,8 @@ static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hi
 						/* penabled only accepts exact bytes of data */
 						if (features->type == TABLETPC2FG)
 							features->pktlen = WACOM_PKGLEN_GRAPHIRE;
+						if (features->type == BAMBOO_PT)
+							features->pktlen = WACOM_PKGLEN_BBFUN;
 						features->device_type = BTN_TOOL_PEN;
 						features->y_max =
 							get_unaligned_le16(&report[i + 3]);
@@ -296,8 +323,9 @@ static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_feat
 	if (!rep_data)
 		return error;
 
-	/* ask to report tablet data if it is 2FGT or not a Tablet PC */
-	if (features->device_type == BTN_TOOL_TRIPLETAP) {
+	/* ask to report tablet data if it is 2FGT Tablet PC or
+	 * not a Tablet PC */
+	if (features->type == TABLETPC2FG) {
 		do {
 			rep_data[0] = 3;
 			rep_data[1] = 4;
@@ -309,7 +337,7 @@ static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_feat
 					WAC_HID_FEATURE_REPORT, report_id,
 					rep_data, 3);
 		} while ((error < 0 || rep_data[1] != 4) && limit++ < 5);
-	} else if (features->type != TABLETPC && features->type != TABLETPC2FG) {
+	} else if (features->type != TABLETPC) {
 		do {
 			rep_data[0] = 2;
 			rep_data[1] = 2;
@@ -334,11 +362,16 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
 	struct usb_host_interface *interface = intf->cur_altsetting;
 	struct hid_descriptor *hid_desc;
 
-	/* default device to penabled */
+	/* default features */
 	features->device_type = BTN_TOOL_PEN;
-
-	/* only Tablet PCs need to retrieve the info */
-	if ((features->type != TABLETPC) && (features->type != TABLETPC2FG))
+	features->x_fuzz = 4;
+	features->y_fuzz = 4;
+	features->pressure_fuzz = 0;
+	features->distance_fuzz = 0;
+
+	/* only Tablet PCs and Bamboo P&T need to retrieve the info */
+	if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) &&
+	    (features->type != BAMBOO_PT))
 		goto out;
 
 	if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
@@ -353,12 +386,6 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
 	if (error)
 		goto out;
 
-	/* touch device found but size is not defined. use default */
-	if (features->device_type == BTN_TOOL_DOUBLETAP && !features->x_max) {
-		features->x_max = 1023;
-		features->y_max = 1023;
-	}
-
  out:
 	return error;
 }
@@ -494,9 +521,11 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
 	if (error)
 		goto fail2;
 
+	wacom_setup_device_quirks(features);
+
 	strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
 
-	if (features->type == TABLETPC || features->type == TABLETPC2FG) {
+	if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
 		/* Append the device type to the name */
 		strlcat(wacom_wac->name,
 			features->device_type == BTN_TOOL_PEN ?

drivers/input/tablet/wacom_wac.h

@@ -21,6 +21,7 @@
 #define WACOM_PKGLEN_INTUOS	10
 #define WACOM_PKGLEN_TPC1FG	 5
 #define WACOM_PKGLEN_TPC2FG	14
+#define WACOM_PKGLEN_BBTOUCH	20
 
 /* device IDs */
 #define STYLUS_DEVICE_ID	0x02
@@ -37,6 +38,13 @@
 #define WACOM_REPORT_TPC1FG		6
 #define WACOM_REPORT_TPC2FG		13
 
+/* device quirks */
+#define WACOM_QUIRK_MULTI_INPUT		0x0001
+#define WACOM_QUIRK_BBTOUCH_LOWRES	0x0002
+
+/* largest reported tracking id */
+#define MAX_TRACKING_ID			0xfff
+
 enum {
 	PENPARTNER = 0,
 	GRAPHIRE,
@@ -44,6 +52,7 @@ enum {
 	PTU,
 	PL,
 	DTU,
+	BAMBOO_PT,
 	INTUOS,
 	INTUOS3S,
 	INTUOS3,
@@ -73,6 +82,11 @@ struct wacom_features {
 	int y_phy;
 	unsigned char unit;
 	unsigned char unitExpo;
+	int x_fuzz;
+	int y_fuzz;
+	int pressure_fuzz;
+	int distance_fuzz;
+	unsigned quirks;
 };
 
 struct wacom_shared {
@@ -86,6 +100,7 @@ struct wacom_wac {
 	int id[3];
 	__u32 serial[2];
 	int last_finger;
+	int trk_id;
 	struct wacom_features features;
 	struct wacom_shared *shared;
 	struct input_dev *input;

drivers/input/touchscreen/Kconfig

@@ -98,6 +98,18 @@ config TOUCHSCREEN_BITSY
 	  To compile this driver as a module, choose M here: the
 	  module will be called h3600_ts_input.
 
+config TOUCHSCREEN_BU21013
+	tristate "BU21013 based touch panel controllers"
+	depends on I2C
+	help
+	  Say Y here if you have a bu21013 touchscreen connected to
+	  your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called bu21013_ts.
+
 config TOUCHSCREEN_CY8CTMG110
 	tristate "cy8ctmg110 touchscreen"
 	depends on I2C
@@ -214,6 +226,16 @@ config TOUCHSCREEN_WACOM_W8001
 	  To compile this driver as a module, choose M here: the
 	  module will be called wacom_w8001.
 
+config TOUCHSCREEN_LPC32XX
+	tristate "LPC32XX touchscreen controller"
+	depends on ARCH_LPC32XX
+	help
+	  Say Y here if you have a LPC32XX device and want
+	  to support the built-in touchscreen.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called lpc32xx_ts.
+
 config TOUCHSCREEN_MCS5000
 	tristate "MELFAS MCS-5000 touchscreen"
 	depends on I2C
@@ -250,6 +272,18 @@ config TOUCHSCREEN_INEXIO
 	  To compile this driver as a module, choose M here: the
 	  module will be called inexio.
 
+config TOUCHSCREEN_INTEL_MID
+	tristate "Intel MID platform resistive touchscreen"
+	depends on INTEL_SCU_IPC
+	help
+	  Say Y here if you have a Intel MID based touchscreen in
+	  your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called intel_mid_touch.
+
 config TOUCHSCREEN_MK712
 	tristate "ICS MicroClock MK712 touchscreen"
 	help

drivers/input/touchscreen/Makefile

@@ -14,6 +14,7 @@ obj-$(CONFIG_TOUCHSCREEN_AD7879_SPI)	+= ad7879-spi.o
 obj-$(CONFIG_TOUCHSCREEN_ADS7846)	+= ads7846.o
 obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC)	+= atmel_tsadcc.o
 obj-$(CONFIG_TOUCHSCREEN_BITSY)		+= h3600_ts_input.o
+obj-$(CONFIG_TOUCHSCREEN_BU21013)       += bu21013_ts.o
 obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110)	+= cy8ctmg110_ts.o
 obj-$(CONFIG_TOUCHSCREEN_DA9034)	+= da9034-ts.o
 obj-$(CONFIG_TOUCHSCREEN_DYNAPRO)	+= dynapro.o
@@ -23,6 +24,8 @@ obj-$(CONFIG_TOUCHSCREEN_EETI)		+= eeti_ts.o
 obj-$(CONFIG_TOUCHSCREEN_ELO)		+= elo.o
 obj-$(CONFIG_TOUCHSCREEN_FUJITSU)	+= fujitsu_ts.o
 obj-$(CONFIG_TOUCHSCREEN_INEXIO)	+= inexio.o
+obj-$(CONFIG_TOUCHSCREEN_INTEL_MID)	+= intel-mid-touch.o
+obj-$(CONFIG_TOUCHSCREEN_LPC32XX)	+= lpc32xx_ts.o
 obj-$(CONFIG_TOUCHSCREEN_MC13783)	+= mc13783_ts.o
 obj-$(CONFIG_TOUCHSCREEN_MCS5000)	+= mcs5000_ts.o
 obj-$(CONFIG_TOUCHSCREEN_MIGOR)		+= migor_ts.o

drivers/input/touchscreen/ad7877.c

@@ -191,13 +191,12 @@ struct ad7877 {
 	struct spi_message	msg;
 
 	struct mutex		mutex;
-	unsigned		disabled:1;	/* P: mutex */
-	unsigned		gpio3:1;	/* P: mutex */
-	unsigned		gpio4:1;	/* P: mutex */
+	bool			disabled;	/* P: mutex */
+	bool			gpio3;		/* P: mutex */
+	bool			gpio4;		/* P: mutex */
 
 	spinlock_t		lock;
 	struct timer_list	timer;		/* P: lock */
-	unsigned		pending:1;	/* P: lock */
 
 	/*
 	 * DMA (thus cache coherency maintenance) requires the
@@ -206,8 +205,8 @@ struct ad7877 {
 	u16 conversion_data[AD7877_NR_SENSE] ____cacheline_aligned;
 };
 
-static int gpio3;
-module_param(gpio3, int, 0);
+static bool gpio3;
+module_param(gpio3, bool, 0);
 MODULE_PARM_DESC(gpio3, "If gpio3 is set to 1 AUX3 acts as GPIO3");
 
 /*
@@ -230,6 +229,7 @@ static int ad7877_read(struct spi_device *spi, u16 reg)
 			AD7877_READADD(reg));
 	req->xfer[0].tx_buf = &req->command;
 	req->xfer[0].len = 2;
+	req->xfer[0].cs_change = 1;
 
 	req->xfer[1].rx_buf = &req->sample;
 	req->xfer[1].len = 2;
@@ -295,20 +295,25 @@ static int ad7877_read_adc(struct spi_device *spi, unsigned command)
 
 	req->xfer[0].tx_buf = &req->reset;
 	req->xfer[0].len = 2;
+	req->xfer[0].cs_change = 1;
 
 	req->xfer[1].tx_buf = &req->ref_on;
 	req->xfer[1].len = 2;
 	req->xfer[1].delay_usecs = ts->vref_delay_usecs;
+	req->xfer[1].cs_change = 1;
 
 	req->xfer[2].tx_buf = &req->command;
 	req->xfer[2].len = 2;
 	req->xfer[2].delay_usecs = ts->vref_delay_usecs;
+	req->xfer[2].cs_change = 1;
 
 	req->xfer[3].rx_buf = &req->sample;
 	req->xfer[3].len = 2;
+	req->xfer[3].cs_change = 1;
 
 	req->xfer[4].tx_buf = &ts->cmd_crtl2;	/*REF OFF*/
 	req->xfer[4].len = 2;
+	req->xfer[4].cs_change = 1;
 
 	req->xfer[5].tx_buf = &ts->cmd_crtl1;	/*DEFAULT*/
 	req->xfer[5].len = 2;
@@ -327,7 +332,7 @@ static int ad7877_read_adc(struct spi_device *spi, unsigned command)
 	return status ? : sample;
 }
 
-static void ad7877_rx(struct ad7877 *ts)
+static int ad7877_process_data(struct ad7877 *ts)
 {
 	struct input_dev *input_dev = ts->input;
 	unsigned Rt;
@@ -354,11 +359,25 @@ static void ad7877_rx(struct ad7877 *ts)
 		Rt /= z1;
 		Rt = (Rt + 2047) >> 12;
 
+		/*
+		 * Sample found inconsistent, pressure is beyond
+		 * the maximum. Don't report it to user space.
+		 */
+		if (Rt > ts->pressure_max)
+			return -EINVAL;
+
+		if (!timer_pending(&ts->timer))
+			input_report_key(input_dev, BTN_TOUCH, 1);
+
 		input_report_abs(input_dev, ABS_X, x);
 		input_report_abs(input_dev, ABS_Y, y);
 		input_report_abs(input_dev, ABS_PRESSURE, Rt);
 		input_sync(input_dev);
+
+		return 0;
 	}
+
+	return -EINVAL;
 }
 
 static inline void ad7877_ts_event_release(struct ad7877 *ts)
@@ -366,72 +385,56 @@ static inline void ad7877_ts_event_release(struct ad7877 *ts)
 	struct input_dev *input_dev = ts->input;
 
 	input_report_abs(input_dev, ABS_PRESSURE, 0);
+	input_report_key(input_dev, BTN_TOUCH, 0);
 	input_sync(input_dev);
 }
 
 static void ad7877_timer(unsigned long handle)
 {
 	struct ad7877 *ts = (void *)handle;
+	unsigned long flags;
 
+	spin_lock_irqsave(&ts->lock, flags);
 	ad7877_ts_event_release(ts);
+	spin_unlock_irqrestore(&ts->lock, flags);
 }
 
 static irqreturn_t ad7877_irq(int irq, void *handle)
 {
 	struct ad7877 *ts = handle;
 	unsigned long flags;
-	int status;
+	int error;
 
-	/*
-	 * The repeated conversion sequencer controlled by TMR kicked off
-	 * too fast. We ignore the last and process the sample sequence
-	 * currently in the queue. It can't be older than 9.4ms, and we
-	 * need to avoid that ts->msg doesn't get issued twice while in work.
-	 */
+	error = spi_sync(ts->spi, &ts->msg);
+	if (error) {
+		dev_err(&ts->spi->dev, "spi_sync --> %d\n", error);
+		goto out;
+	}
 
 	spin_lock_irqsave(&ts->lock, flags);
-	if (!ts->pending) {
-		ts->pending = 1;
-
-		status = spi_async(ts->spi, &ts->msg);
-		if (status)
-			dev_err(&ts->spi->dev, "spi_sync --> %d\n", status);
-	}
+	error = ad7877_process_data(ts);
+	if (!error)
+		mod_timer(&ts->timer, jiffies + TS_PEN_UP_TIMEOUT);
 	spin_unlock_irqrestore(&ts->lock, flags);
 
+out:
 	return IRQ_HANDLED;
 }
 
-static void ad7877_callback(void *_ts)
-{
-	struct ad7877 *ts = _ts;
-
-	spin_lock_irq(&ts->lock);
-
-	ad7877_rx(ts);
-	ts->pending = 0;
-	mod_timer(&ts->timer, jiffies + TS_PEN_UP_TIMEOUT);
-
-	spin_unlock_irq(&ts->lock);
-}
-
 static void ad7877_disable(struct ad7877 *ts)
 {
 	mutex_lock(&ts->mutex);
 
 	if (!ts->disabled) {
-		ts->disabled = 1;
+		ts->disabled = true;
 		disable_irq(ts->spi->irq);
 
-		/* Wait for spi_async callback */
-		while (ts->pending)
-			msleep(1);
-
 		if (del_timer_sync(&ts->timer))
 			ad7877_ts_event_release(ts);
 	}
 
-	/* we know the chip's in lowpower mode since we always
+	/*
+	 * We know the chip's in lowpower mode since we always
 	 * leave it that way after every request
 	 */
 
@@ -443,7 +446,7 @@ static void ad7877_enable(struct ad7877 *ts)
 	mutex_lock(&ts->mutex);
 
 	if (ts->disabled) {
-		ts->disabled = 0;
+		ts->disabled = false;
 		enable_irq(ts->spi->irq);
 	}
 
@@ -453,7 +456,7 @@ static void ad7877_enable(struct ad7877 *ts)
 #define SHOW(name) static ssize_t \
 name ## _show(struct device *dev, struct device_attribute *attr, char *buf) \
 { \
-	struct ad7877	*ts = dev_get_drvdata(dev); \
+	struct ad7877 *ts = dev_get_drvdata(dev); \
 	ssize_t v = ad7877_read_adc(ts->spi, \
 			AD7877_READ_CHAN(name)); \
 	if (v < 0) \
@@ -473,7 +476,7 @@ SHOW(temp2)
 static ssize_t ad7877_disable_show(struct device *dev,
 				     struct device_attribute *attr, char *buf)
 {
-	struct ad7877	*ts = dev_get_drvdata(dev);
+	struct ad7877 *ts = dev_get_drvdata(dev);
 
 	return sprintf(buf, "%u\n", ts->disabled);
 }
@@ -503,7 +506,7 @@ static DEVICE_ATTR(disable, 0664, ad7877_disable_show, ad7877_disable_store);
 static ssize_t ad7877_dac_show(struct device *dev,
 				     struct device_attribute *attr, char *buf)
 {
-	struct ad7877	*ts = dev_get_drvdata(dev);
+	struct ad7877 *ts = dev_get_drvdata(dev);
 
 	return sprintf(buf, "%u\n", ts->dac);
 }
@@ -533,7 +536,7 @@ static DEVICE_ATTR(dac, 0664, ad7877_dac_show, ad7877_dac_store);
 static ssize_t ad7877_gpio3_show(struct device *dev,
 				     struct device_attribute *attr, char *buf)
 {
-	struct ad7877	*ts = dev_get_drvdata(dev);
+	struct ad7877 *ts = dev_get_drvdata(dev);
 
 	return sprintf(buf, "%u\n", ts->gpio3);
 }
@@ -564,7 +567,7 @@ static DEVICE_ATTR(gpio3, 0664, ad7877_gpio3_show, ad7877_gpio3_store);
 static ssize_t ad7877_gpio4_show(struct device *dev,
 				     struct device_attribute *attr, char *buf)
 {
-	struct ad7877	*ts = dev_get_drvdata(dev);
+	struct ad7877 *ts = dev_get_drvdata(dev);
 
 	return sprintf(buf, "%u\n", ts->gpio4);
 }
@@ -597,16 +600,35 @@ static struct attribute *ad7877_attributes[] = {
 	&dev_attr_temp2.attr,
 	&dev_attr_aux1.attr,
 	&dev_attr_aux2.attr,
+	&dev_attr_aux3.attr,
 	&dev_attr_bat1.attr,
 	&dev_attr_bat2.attr,
 	&dev_attr_disable.attr,
 	&dev_attr_dac.attr,
+	&dev_attr_gpio3.attr,
 	&dev_attr_gpio4.attr,
 	NULL
 };
 
+static mode_t ad7877_attr_is_visible(struct kobject *kobj,
+				     struct attribute *attr, int n)
+{
+	mode_t mode = attr->mode;
+
+	if (attr == &dev_attr_aux3.attr) {
+		if (gpio3)
+			mode = 0;
+	} else if (attr == &dev_attr_gpio3.attr) {
+		if (!gpio3)
+			mode = 0;
+	}
+
+	return mode;
+}
+
 static const struct attribute_group ad7877_attr_group = {
-	.attrs = ad7877_attributes,
+	.is_visible	= ad7877_attr_is_visible,
+	.attrs		= ad7877_attributes,
 };
 
 static void ad7877_setup_ts_def_msg(struct spi_device *spi, struct ad7877 *ts)
@@ -635,22 +657,25 @@ static void ad7877_setup_ts_def_msg(struct spi_device *spi, struct ad7877 *ts)
 
 	spi_message_init(m);
 
-	m->complete = ad7877_callback;
 	m->context = ts;
 
 	ts->xfer[0].tx_buf = &ts->cmd_crtl1;
 	ts->xfer[0].len = 2;
+	ts->xfer[0].cs_change = 1;
 
 	spi_message_add_tail(&ts->xfer[0], m);
 
 	ts->xfer[1].tx_buf = &ts->cmd_dummy; /* Send ZERO */
 	ts->xfer[1].len = 2;
+	ts->xfer[1].cs_change = 1;
 
 	spi_message_add_tail(&ts->xfer[1], m);
 
-	for (i = 0; i < 11; i++) {
+	for (i = 0; i < AD7877_NR_SENSE; i++) {
 		ts->xfer[i + 2].rx_buf = &ts->conversion_data[AD7877_SEQ_YPOS + i];
 		ts->xfer[i + 2].len = 2;
+		if (i < (AD7877_NR_SENSE - 1))
+			ts->xfer[i + 2].cs_change = 1;
 		spi_message_add_tail(&ts->xfer[i + 2], m);
 	}
 }
@@ -718,6 +743,8 @@ static int __devinit ad7877_probe(struct spi_device *spi)
 	input_dev->phys = ts->phys;
 	input_dev->dev.parent = &spi->dev;
 
+	__set_bit(EV_KEY, input_dev->evbit);
+	__set_bit(BTN_TOUCH, input_dev->keybit);
 	__set_bit(EV_ABS, input_dev->evbit);
 	__set_bit(ABS_X, input_dev->absbit);
 	__set_bit(ABS_Y, input_dev->absbit);
@@ -752,8 +779,9 @@ static int __devinit ad7877_probe(struct spi_device *spi)
 
 	/* Request AD7877 /DAV GPIO interrupt */
 
-	err = request_irq(spi->irq, ad7877_irq, IRQF_TRIGGER_FALLING,
-			spi->dev.driver->name, ts);
+	err = request_threaded_irq(spi->irq, NULL, ad7877_irq,
+				   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+				   spi->dev.driver->name, ts);
 	if (err) {
 		dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);
 		goto err_free_mem;
@@ -763,20 +791,12 @@ static int __devinit ad7877_probe(struct spi_device *spi)
 	if (err)
 		goto err_free_irq;
 
-	err = device_create_file(&spi->dev,
-				 gpio3 ? &dev_attr_gpio3 : &dev_attr_aux3);
-	if (err)
-		goto err_remove_attr_group;
-
 	err = input_register_device(input_dev);
 	if (err)
-		goto err_remove_attr;
+		goto err_remove_attr_group;
 
 	return 0;
 
-err_remove_attr:
-	device_remove_file(&spi->dev,
-			   gpio3 ? &dev_attr_gpio3 : &dev_attr_aux3);
 err_remove_attr_group:
 	sysfs_remove_group(&spi->dev.kobj, &ad7877_attr_group);
 err_free_irq:
@@ -790,11 +810,9 @@ static int __devinit ad7877_probe(struct spi_device *spi)
 
 static int __devexit ad7877_remove(struct spi_device *spi)
 {
-	struct ad7877		*ts = dev_get_drvdata(&spi->dev);
+	struct ad7877 *ts = dev_get_drvdata(&spi->dev);
 
 	sysfs_remove_group(&spi->dev.kobj, &ad7877_attr_group);
-	device_remove_file(&spi->dev,
-			   gpio3 ? &dev_attr_gpio3 : &dev_attr_aux3);
 
 	ad7877_disable(ts);
 	free_irq(ts->spi->irq, ts);

drivers/input/touchscreen/cy8ctmg110_ts.c

@@ -206,9 +206,9 @@ static int __devinit cy8ctmg110_probe(struct i2c_client *client,
 	input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 
 	input_set_abs_params(input_dev, ABS_X,
-			CY8CTMG110_X_MIN, CY8CTMG110_X_MAX, 0, 0);
+			CY8CTMG110_X_MIN, CY8CTMG110_X_MAX, 4, 0);
 	input_set_abs_params(input_dev, ABS_Y,
-			CY8CTMG110_Y_MIN, CY8CTMG110_Y_MAX, 0, 0);
+			CY8CTMG110_Y_MIN, CY8CTMG110_Y_MAX, 4, 0);
 
 	if (ts->reset_pin) {
 		err = gpio_request(ts->reset_pin, NULL);

drivers/input/touchscreen/hp680_ts_input.c

@@ -107,8 +107,7 @@ static int __init hp680_ts_init(void)
 	return 0;
 
  fail2:	free_irq(HP680_TS_IRQ, NULL);
-	cancel_delayed_work(&work);
-	flush_scheduled_work();
+	cancel_delayed_work_sync(&work);
  fail1:	input_free_device(hp680_ts_dev);
 	return err;
 }
@@ -116,8 +115,7 @@ static int __init hp680_ts_init(void)
 static void __exit hp680_ts_exit(void)
 {
 	free_irq(HP680_TS_IRQ, NULL);
-	cancel_delayed_work(&work);
-	flush_scheduled_work();
+	cancel_delayed_work_sync(&work);
 	input_unregister_device(hp680_ts_dev);
 }
 

drivers/input/touchscreen/s3c2410_ts.c

@@ -350,7 +350,7 @@ static int __devinit s3c2410ts_probe(struct platform_device *pdev)
  err_tcirq:
 	free_irq(ts.irq_tc, ts.input);
  err_inputdev:
-	input_unregister_device(ts.input);
+	input_free_device(ts.input);
  err_iomap:
 	iounmap(ts.io);
  err_clk:

drivers/input/touchscreen/stmpe-ts.c

@@ -268,7 +268,7 @@ static int __devinit stmpe_input_probe(struct platform_device *pdev)
 	struct stmpe_touch *ts;
 	struct input_dev *idev;
 	struct stmpe_ts_platform_data *ts_pdata = NULL;
-	int ret = 0;
+	int ret;
 	int ts_irq;
 
 	ts_irq = platform_get_irq_byname(pdev, "FIFO_TH");
@@ -276,12 +276,16 @@ static int __devinit stmpe_input_probe(struct platform_device *pdev)
 		return ts_irq;
 
 	ts = kzalloc(sizeof(*ts), GFP_KERNEL);
-	if (!ts)
+	if (!ts) {
+		ret = -ENOMEM;
 		goto err_out;
+	}
 
 	idev = input_allocate_device();
-	if (!idev)
+	if (!idev) {
+		ret = -ENOMEM;
 		goto err_free_ts;
+	}
 
 	platform_set_drvdata(pdev, ts);
 	ts->stmpe = stmpe;
@@ -361,7 +365,6 @@ static int __devexit stmpe_ts_remove(struct platform_device *pdev)
 	platform_set_drvdata(pdev, NULL);
 
 	input_unregister_device(ts->idev);
-	input_free_device(ts->idev);
 
 	kfree(ts);
 

drivers/staging/mrst-touchscreen/Makefile

-obj-$(CONFIG_TOUCHSCREEN_INTEL_MID) := intel_mid_touch.o
-
-