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-rw-r--r--drivers/input/touchscreen/Kconfig13
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c352
-rw-r--r--drivers/input/touchscreen/chipone_icn8505.c520
-rw-r--r--drivers/input/touchscreen/goodix.c1
-rw-r--r--drivers/input/touchscreen/mk712.c2
-rw-r--r--drivers/input/touchscreen/ti_am335x_tsc.c7
-rw-r--r--drivers/input/touchscreen/usbtouchscreen.c94
8 files changed, 770 insertions, 220 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 4f15496fec8b..32267c1afebc 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -164,6 +164,17 @@ config TOUCHSCREEN_CHIPONE_ICN8318
To compile this driver as a module, choose M here: the
module will be called chipone_icn8318.
+config TOUCHSCREEN_CHIPONE_ICN8505
+ tristate "chipone icn8505 touchscreen controller"
+ depends on I2C && ACPI
+ help
+ Say Y here if you have a ChipOne icn8505 based I2C touchscreen.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called chipone_icn8505.
+
config TOUCHSCREEN_CY8CTMG110
tristate "cy8ctmg110 touchscreen"
depends on I2C
@@ -362,7 +373,7 @@ config TOUCHSCREEN_HIDEEP
If unsure, say N.
- To compile this driver as a moudle, choose M here : the
+ To compile this driver as a module, choose M here : the
module will be called hideep_ts.
config TOUCHSCREEN_ILI210X
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index dddae7973436..fd4fd32fb73f 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT) += atmel_mxt_ts.o
obj-$(CONFIG_TOUCHSCREEN_AUO_PIXCIR) += auo-pixcir-ts.o
obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o
obj-$(CONFIG_TOUCHSCREEN_CHIPONE_ICN8318) += chipone_icn8318.o
+obj-$(CONFIG_TOUCHSCREEN_CHIPONE_ICN8505) += chipone_icn8505.o
obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o cyttsp_i2c_common.o
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 5d9699fe1b55..54fe190fd4bc 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -194,6 +194,8 @@ enum t100_type {
/* Delay times */
#define MXT_BACKUP_TIME 50 /* msec */
+#define MXT_RESET_GPIO_TIME 20 /* msec */
+#define MXT_RESET_INVALID_CHG 100 /* msec */
#define MXT_RESET_TIME 200 /* msec */
#define MXT_RESET_TIMEOUT 3000 /* msec */
#define MXT_CRC_TIMEOUT 1000 /* msec */
@@ -280,7 +282,8 @@ struct mxt_data {
struct input_dev *input_dev;
char phys[64]; /* device physical location */
struct mxt_object *object_table;
- struct mxt_info info;
+ struct mxt_info *info;
+ void *raw_info_block;
unsigned int irq;
unsigned int max_x;
unsigned int max_y;
@@ -460,12 +463,13 @@ static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry)
{
u8 appmode = data->client->addr;
u8 bootloader;
+ u8 family_id = data->info ? data->info->family_id : 0;
switch (appmode) {
case 0x4a:
case 0x4b:
/* Chips after 1664S use different scheme */
- if (retry || data->info.family_id >= 0xa2) {
+ if (retry || family_id >= 0xa2) {
bootloader = appmode - 0x24;
break;
}
@@ -692,7 +696,7 @@ mxt_get_object(struct mxt_data *data, u8 type)
struct mxt_object *object;
int i;
- for (i = 0; i < data->info.object_num; i++) {
+ for (i = 0; i < data->info->object_num; i++) {
object = data->object_table + i;
if (object->type == type)
return object;
@@ -1206,7 +1210,7 @@ static int mxt_soft_reset(struct mxt_data *data)
return ret;
/* Ignore CHG line for 100ms after reset */
- msleep(100);
+ msleep(MXT_RESET_INVALID_CHG);
mxt_acquire_irq(data);
@@ -1462,12 +1466,12 @@ static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg)
data_pos += offset;
}
- if (cfg_info.family_id != data->info.family_id) {
+ if (cfg_info.family_id != data->info->family_id) {
dev_err(dev, "Family ID mismatch!\n");
return -EINVAL;
}
- if (cfg_info.variant_id != data->info.variant_id) {
+ if (cfg_info.variant_id != data->info->variant_id) {
dev_err(dev, "Variant ID mismatch!\n");
return -EINVAL;
}
@@ -1512,7 +1516,7 @@ static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg)
/* Malloc memory to store configuration */
cfg_start_ofs = MXT_OBJECT_START +
- data->info.object_num * sizeof(struct mxt_object) +
+ data->info->object_num * sizeof(struct mxt_object) +
MXT_INFO_CHECKSUM_SIZE;
config_mem_size = data->mem_size - cfg_start_ofs;
config_mem = kzalloc(config_mem_size, GFP_KERNEL);
@@ -1563,20 +1567,6 @@ release_mem:
return ret;
}
-static int mxt_get_info(struct mxt_data *data)
-{
- struct i2c_client *client = data->client;
- struct mxt_info *info = &data->info;
- int error;
-
- /* Read 7-byte info block starting at address 0 */
- error = __mxt_read_reg(client, 0, sizeof(*info), info);
- if (error)
- return error;
-
- return 0;
-}
-
static void mxt_free_input_device(struct mxt_data *data)
{
if (data->input_dev) {
@@ -1591,9 +1581,10 @@ static void mxt_free_object_table(struct mxt_data *data)
video_unregister_device(&data->dbg.vdev);
v4l2_device_unregister(&data->dbg.v4l2);
#endif
-
- kfree(data->object_table);
data->object_table = NULL;
+ data->info = NULL;
+ kfree(data->raw_info_block);
+ data->raw_info_block = NULL;
kfree(data->msg_buf);
data->msg_buf = NULL;
data->T5_address = 0;
@@ -1609,34 +1600,18 @@ static void mxt_free_object_table(struct mxt_data *data)
data->max_reportid = 0;
}
-static int mxt_get_object_table(struct mxt_data *data)
+static int mxt_parse_object_table(struct mxt_data *data,
+ struct mxt_object *object_table)
{
struct i2c_client *client = data->client;
- size_t table_size;
- struct mxt_object *object_table;
- int error;
int i;
u8 reportid;
u16 end_address;
- table_size = data->info.object_num * sizeof(struct mxt_object);
- object_table = kzalloc(table_size, GFP_KERNEL);
- if (!object_table) {
- dev_err(&data->client->dev, "Failed to allocate memory\n");
- return -ENOMEM;
- }
-
- error = __mxt_read_reg(client, MXT_OBJECT_START, table_size,
- object_table);
- if (error) {
- kfree(object_table);
- return error;
- }
-
/* Valid Report IDs start counting from 1 */
reportid = 1;
data->mem_size = 0;
- for (i = 0; i < data->info.object_num; i++) {
+ for (i = 0; i < data->info->object_num; i++) {
struct mxt_object *object = object_table + i;
u8 min_id, max_id;
@@ -1660,8 +1635,8 @@ static int mxt_get_object_table(struct mxt_data *data)
switch (object->type) {
case MXT_GEN_MESSAGE_T5:
- if (data->info.family_id == 0x80 &&
- data->info.version < 0x20) {
+ if (data->info->family_id == 0x80 &&
+ data->info->version < 0x20) {
/*
* On mXT224 firmware versions prior to V2.0
* read and discard unused CRC byte otherwise
@@ -1716,24 +1691,102 @@ static int mxt_get_object_table(struct mxt_data *data)
/* If T44 exists, T5 position has to be directly after */
if (data->T44_address && (data->T5_address != data->T44_address + 1)) {
dev_err(&client->dev, "Invalid T44 position\n");
- error = -EINVAL;
- goto free_object_table;
+ return -EINVAL;
}
data->msg_buf = kcalloc(data->max_reportid,
data->T5_msg_size, GFP_KERNEL);
- if (!data->msg_buf) {
- dev_err(&client->dev, "Failed to allocate message buffer\n");
+ if (!data->msg_buf)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int mxt_read_info_block(struct mxt_data *data)
+{
+ struct i2c_client *client = data->client;
+ int error;
+ size_t size;
+ void *id_buf, *buf;
+ uint8_t num_objects;
+ u32 calculated_crc;
+ u8 *crc_ptr;
+
+ /* If info block already allocated, free it */
+ if (data->raw_info_block)
+ mxt_free_object_table(data);
+
+ /* Read 7-byte ID information block starting at address 0 */
+ size = sizeof(struct mxt_info);
+ id_buf = kzalloc(size, GFP_KERNEL);
+ if (!id_buf)
+ return -ENOMEM;
+
+ error = __mxt_read_reg(client, 0, size, id_buf);
+ if (error)
+ goto err_free_mem;
+
+ /* Resize buffer to give space for rest of info block */
+ num_objects = ((struct mxt_info *)id_buf)->object_num;
+ size += (num_objects * sizeof(struct mxt_object))
+ + MXT_INFO_CHECKSUM_SIZE;
+
+ buf = krealloc(id_buf, size, GFP_KERNEL);
+ if (!buf) {
error = -ENOMEM;
- goto free_object_table;
+ goto err_free_mem;
+ }
+ id_buf = buf;
+
+ /* Read rest of info block */
+ error = __mxt_read_reg(client, MXT_OBJECT_START,
+ size - MXT_OBJECT_START,
+ id_buf + MXT_OBJECT_START);
+ if (error)
+ goto err_free_mem;
+
+ /* Extract & calculate checksum */
+ crc_ptr = id_buf + size - MXT_INFO_CHECKSUM_SIZE;
+ data->info_crc = crc_ptr[0] | (crc_ptr[1] << 8) | (crc_ptr[2] << 16);
+
+ calculated_crc = mxt_calculate_crc(id_buf, 0,
+ size - MXT_INFO_CHECKSUM_SIZE);
+
+ /*
+ * CRC mismatch can be caused by data corruption due to I2C comms
+ * issue or else device is not using Object Based Protocol (eg i2c-hid)
+ */
+ if ((data->info_crc == 0) || (data->info_crc != calculated_crc)) {
+ dev_err(&client->dev,
+ "Info Block CRC error calculated=0x%06X read=0x%06X\n",
+ calculated_crc, data->info_crc);
+ error = -EIO;
+ goto err_free_mem;
+ }
+
+ data->raw_info_block = id_buf;
+ data->info = (struct mxt_info *)id_buf;
+
+ dev_info(&client->dev,
+ "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
+ data->info->family_id, data->info->variant_id,
+ data->info->version >> 4, data->info->version & 0xf,
+ data->info->build, data->info->object_num);
+
+ /* Parse object table information */
+ error = mxt_parse_object_table(data, id_buf + MXT_OBJECT_START);
+ if (error) {
+ dev_err(&client->dev, "Error %d parsing object table\n", error);
+ mxt_free_object_table(data);
+ goto err_free_mem;
}
- data->object_table = object_table;
+ data->object_table = (struct mxt_object *)(id_buf + MXT_OBJECT_START);
return 0;
-free_object_table:
- mxt_free_object_table(data);
+err_free_mem:
+ kfree(id_buf);
return error;
}
@@ -2046,7 +2099,7 @@ static int mxt_initialize(struct mxt_data *data)
int error;
while (1) {
- error = mxt_get_info(data);
+ error = mxt_read_info_block(data);
if (!error)
break;
@@ -2077,16 +2130,9 @@ static int mxt_initialize(struct mxt_data *data)
msleep(MXT_FW_RESET_TIME);
}
- /* Get object table information */
- error = mxt_get_object_table(data);
- if (error) {
- dev_err(&client->dev, "Error %d reading object table\n", error);
- return error;
- }
-
error = mxt_acquire_irq(data);
if (error)
- goto err_free_object_table;
+ return error;
error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME,
&client->dev, GFP_KERNEL, data,
@@ -2094,14 +2140,10 @@ static int mxt_initialize(struct mxt_data *data)
if (error) {
dev_err(&client->dev, "Failed to invoke firmware loader: %d\n",
error);
- goto err_free_object_table;
+ return error;
}
return 0;
-
-err_free_object_table:
- mxt_free_object_table(data);
- return error;
}
static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep)
@@ -2162,7 +2204,7 @@ recheck:
static u16 mxt_get_debug_value(struct mxt_data *data, unsigned int x,
unsigned int y)
{
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
struct mxt_dbg *dbg = &data->dbg;
unsigned int ofs, page;
unsigned int col = 0;
@@ -2490,7 +2532,7 @@ static const struct video_device mxt_video_device = {
static void mxt_debug_init(struct mxt_data *data)
{
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
struct mxt_dbg *dbg = &data->dbg;
struct mxt_object *object;
int error;
@@ -2576,7 +2618,6 @@ static int mxt_configure_objects(struct mxt_data *data,
const struct firmware *cfg)
{
struct device *dev = &data->client->dev;
- struct mxt_info *info = &data->info;
int error;
error = mxt_init_t7_power_cfg(data);
@@ -2601,11 +2642,6 @@ static int mxt_configure_objects(struct mxt_data *data,
mxt_debug_init(data);
- dev_info(dev,
- "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
- info->family_id, info->variant_id, info->version >> 4,
- info->version & 0xf, info->build, info->object_num);
-
return 0;
}
@@ -2614,7 +2650,7 @@ static ssize_t mxt_fw_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mxt_data *data = dev_get_drvdata(dev);
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n",
info->version >> 4, info->version & 0xf, info->build);
}
@@ -2624,7 +2660,7 @@ static ssize_t mxt_hw_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mxt_data *data = dev_get_drvdata(dev);
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
return scnprintf(buf, PAGE_SIZE, "%u.%u\n",
info->family_id, info->variant_id);
}
@@ -2663,7 +2699,7 @@ static ssize_t mxt_object_show(struct device *dev,
return -ENOMEM;
error = 0;
- for (i = 0; i < data->info.object_num; i++) {
+ for (i = 0; i < data->info->object_num; i++) {
object = data->object_table + i;
if (!mxt_object_readable(object->type))
@@ -2965,133 +3001,6 @@ static int mxt_parse_device_properties(struct mxt_data *data)
return 0;
}
-#ifdef CONFIG_ACPI
-
-struct mxt_acpi_platform_data {
- const char *hid;
- const struct property_entry *props;
-};
-
-static unsigned int samus_touchpad_buttons[] = {
- KEY_RESERVED,
- KEY_RESERVED,
- KEY_RESERVED,
- BTN_LEFT
-};
-
-static const struct property_entry samus_touchpad_props[] = {
- PROPERTY_ENTRY_U32_ARRAY("linux,gpio-keymap", samus_touchpad_buttons),
- { }
-};
-
-static struct mxt_acpi_platform_data samus_platform_data[] = {
- {
- /* Touchpad */
- .hid = "ATML0000",
- .props = samus_touchpad_props,
- },
- {
- /* Touchscreen */
- .hid = "ATML0001",
- },
- { }
-};
-
-static unsigned int chromebook_tp_buttons[] = {
- KEY_RESERVED,
- KEY_RESERVED,
- KEY_RESERVED,
- KEY_RESERVED,
- KEY_RESERVED,
- BTN_LEFT
-};
-
-static const struct property_entry chromebook_tp_props[] = {
- PROPERTY_ENTRY_U32_ARRAY("linux,gpio-keymap", chromebook_tp_buttons),
- { }
-};
-
-static struct mxt_acpi_platform_data chromebook_platform_data[] = {
- {
- /* Touchpad */
- .hid = "ATML0000",
- .props = chromebook_tp_props,
- },
- {
- /* Touchscreen */
- .hid = "ATML0001",
- },
- { }
-};
-
-static const struct dmi_system_id mxt_dmi_table[] = {
- {
- /* 2015 Google Pixel */
- .ident = "Chromebook Pixel 2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Samus"),
- },
- .driver_data = samus_platform_data,
- },
- {
- /* Other Google Chromebooks */
- .ident = "Chromebook",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
- },
- .driver_data = chromebook_platform_data,
- },
- { }
-};
-
-static int mxt_prepare_acpi_properties(struct i2c_client *client)
-{
- struct acpi_device *adev;
- const struct dmi_system_id *system_id;
- const struct mxt_acpi_platform_data *acpi_pdata;
-
- adev = ACPI_COMPANION(&client->dev);
- if (!adev)
- return -ENOENT;
-
- system_id = dmi_first_match(mxt_dmi_table);
- if (!system_id)
- return -ENOENT;
-
- acpi_pdata = system_id->driver_data;
- if (!acpi_pdata)
- return -ENOENT;
-
- while (acpi_pdata->hid) {
- if (!strcmp(acpi_device_hid(adev), acpi_pdata->hid)) {
- /*
- * Remove previously installed properties if we
- * are probing this device not for the very first
- * time.
- */
- device_remove_properties(&client->dev);
-
- /*
- * Now install the platform-specific properties
- * that are missing from ACPI.
- */
- device_add_properties(&client->dev, acpi_pdata->props);
- break;
- }
-
- acpi_pdata++;
- }
-
- return 0;
-}
-#else
-static int mxt_prepare_acpi_properties(struct i2c_client *client)
-{
- return -ENOENT;
-}
-#endif
-
static const struct dmi_system_id chromebook_T9_suspend_dmi[] = {
{
.matches = {
@@ -3113,6 +3022,18 @@ static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id)
int error;
/*
+ * Ignore devices that do not have device properties attached to
+ * them, as we need help determining whether we are dealing with
+ * touch screen or touchpad.
+ *
+ * So far on x86 the only users of Atmel touch controllers are
+ * Chromebooks, and chromeos_laptop driver will ensure that
+ * necessary properties are provided (if firmware does not do that).
+ */
+ if (!device_property_present(&client->dev, "compatible"))
+ return -ENXIO;
+
+ /*
* Ignore ACPI devices representing bootloader mode.
*
* This is a bit of a hack: Google Chromebook BIOS creates ACPI
@@ -3143,10 +3064,6 @@ static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id)
data->suspend_mode = dmi_check_system(chromebook_T9_suspend_dmi) ?
MXT_SUSPEND_T9_CTRL : MXT_SUSPEND_DEEP_SLEEP;
- error = mxt_prepare_acpi_properties(client);
- if (error && error != -ENOENT)
- return error;
-
error = mxt_parse_device_properties(data);
if (error)
return error;
@@ -3167,20 +3084,14 @@ static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id)
return error;
}
+ disable_irq(client->irq);
+
if (data->reset_gpio) {
- data->in_bootloader = true;
- msleep(MXT_RESET_TIME);
- reinit_completion(&data->bl_completion);
+ msleep(MXT_RESET_GPIO_TIME);
gpiod_set_value(data->reset_gpio, 1);
- error = mxt_wait_for_completion(data, &data->bl_completion,
- MXT_RESET_TIMEOUT);
- if (error)
- return error;
- data->in_bootloader = false;
+ msleep(MXT_RESET_INVALID_CHG);
}
- disable_irq(client->irq);
-
error = mxt_initialize(data);
if (error)
return error;
@@ -3254,6 +3165,11 @@ static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume);
static const struct of_device_id mxt_of_match[] = {
{ .compatible = "atmel,maxtouch", },
+ /* Compatibles listed below are deprecated */
+ { .compatible = "atmel,qt602240_ts", },
+ { .compatible = "atmel,atmel_mxt_ts", },
+ { .compatible = "atmel,atmel_mxt_tp", },
+ { .compatible = "atmel,mXT224", },
{},
};
MODULE_DEVICE_TABLE(of, mxt_of_match);
diff --git a/drivers/input/touchscreen/chipone_icn8505.c b/drivers/input/touchscreen/chipone_icn8505.c
new file mode 100644
index 000000000000..c768186ce856
--- /dev/null
+++ b/drivers/input/touchscreen/chipone_icn8505.c
@@ -0,0 +1,520 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Driver for ChipOne icn8505 i2c touchscreen controller
+ *
+ * Copyright (c) 2015-2018 Red Hat Inc.
+ *
+ * Red Hat authors:
+ * Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <asm/unaligned.h>
+#include <linux/acpi.h>
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/module.h>
+
+/* Normal operation mode defines */
+#define ICN8505_REG_ADDR_WIDTH 16
+
+#define ICN8505_REG_POWER 0x0004
+#define ICN8505_REG_TOUCHDATA 0x1000
+#define ICN8505_REG_CONFIGDATA 0x8000
+
+/* ICN8505_REG_POWER commands */
+#define ICN8505_POWER_ACTIVE 0x00
+#define ICN8505_POWER_MONITOR 0x01
+#define ICN8505_POWER_HIBERNATE 0x02
+/*
+ * The Android driver uses these to turn on/off the charger filter, but the
+ * filter is way too aggressive making e.g. onscreen keyboards unusable.
+ */
+#define ICN8505_POWER_ENA_CHARGER_MODE 0x55
+#define ICN8505_POWER_DIS_CHARGER_MODE 0x66
+
+#define ICN8505_MAX_TOUCHES 10
+
+/* Programming mode defines */
+#define ICN8505_PROG_I2C_ADDR 0x30
+#define ICN8505_PROG_REG_ADDR_WIDTH 24
+
+#define MAX_FW_UPLOAD_TRIES 3
+
+struct icn8505_touch {
+ u8 slot;
+ u8 x[2];
+ u8 y[2];
+ u8 pressure; /* Seems more like finger width then pressure really */
+ u8 event;
+/* The difference between 2 and 3 is unclear */
+#define ICN8505_EVENT_NO_DATA 1 /* No finger seen yet since wakeup */
+#define ICN8505_EVENT_UPDATE1 2 /* New or updated coordinates */
+#define ICN8505_EVENT_UPDATE2 3 /* New or updated coordinates */
+#define ICN8505_EVENT_END 4 /* Finger lifted */
+} __packed;
+
+struct icn8505_touch_data {
+ u8 softbutton;
+ u8 touch_count;
+ struct icn8505_touch touches[ICN8505_MAX_TOUCHES];
+} __packed;
+
+struct icn8505_data {
+ struct i2c_client *client;
+ struct input_dev *input;
+ struct gpio_desc *wake_gpio;
+ struct touchscreen_properties prop;
+ char firmware_name[32];
+};
+
+static int icn8505_read_xfer(struct i2c_client *client, u16 i2c_addr,
+ int reg_addr, int reg_addr_width,
+ void *data, int len, bool silent)
+{
+ u8 buf[3];
+ int i, ret;
+ struct i2c_msg msg[2] = {
+ {
+ .addr = i2c_addr,
+ .buf = buf,
+ .len = reg_addr_width / 8,
+ },
+ {
+ .addr = i2c_addr,
+ .flags = I2C_M_RD,
+ .buf = data,
+ .len = len,
+ }
+ };
+
+ for (i = 0; i < (reg_addr_width / 8); i++)
+ buf[i] = (reg_addr >> (reg_addr_width - (i + 1) * 8)) & 0xff;
+
+ ret = i2c_transfer(client->adapter, msg, 2);
+ if (ret != ARRAY_SIZE(msg)) {
+ if (ret >= 0)
+ ret = -EIO;
+ if (!silent)
+ dev_err(&client->dev,
+ "Error reading addr %#x reg %#x: %d\n",
+ i2c_addr, reg_addr, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int icn8505_write_xfer(struct i2c_client *client, u16 i2c_addr,
+ int reg_addr, int reg_addr_width,
+ const void *data, int len, bool silent)
+{
+ u8 buf[3 + 32]; /* 3 bytes for 24 bit reg-addr + 32 bytes max len */
+ int i, ret;
+ struct i2c_msg msg = {
+ .addr = i2c_addr,
+ .buf = buf,
+ .len = reg_addr_width / 8 + len,
+ };
+
+ if (WARN_ON(len > 32))
+ return -EINVAL;
+
+ for (i = 0; i < (reg_addr_width / 8); i++)
+ buf[i] = (reg_addr >> (reg_addr_width - (i + 1) * 8)) & 0xff;
+
+ memcpy(buf + reg_addr_width / 8, data, len);
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret != 1) {
+ if (ret >= 0)
+ ret = -EIO;
+ if (!silent)
+ dev_err(&client->dev,
+ "Error writing addr %#x reg %#x: %d\n",
+ i2c_addr, reg_addr, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int icn8505_read_data(struct icn8505_data *icn8505, int reg,
+ void *buf, int len)
+{
+ return icn8505_read_xfer(icn8505->client, icn8505->client->addr, reg,
+ ICN8505_REG_ADDR_WIDTH, buf, len, false);
+}
+
+static int icn8505_read_reg_silent(struct icn8505_data *icn8505, int reg)
+{
+ u8 buf;
+ int error;
+
+ error = icn8505_read_xfer(icn8505->client, icn8505->client->addr, reg,
+ ICN8505_REG_ADDR_WIDTH, &buf, 1, true);
+ if (error)
+ return error;
+
+ return buf;
+}
+
+static int icn8505_write_reg(struct icn8505_data *icn8505, int reg, u8 val)
+{
+ return icn8505_write_xfer(icn8505->client, icn8505->client->addr, reg,
+ ICN8505_REG_ADDR_WIDTH, &val, 1, false);
+}
+
+static int icn8505_read_prog_data(struct icn8505_data *icn8505, int reg,
+ void *buf, int len)
+{
+ return icn8505_read_xfer(icn8505->client, ICN8505_PROG_I2C_ADDR, reg,
+ ICN8505_PROG_REG_ADDR_WIDTH, buf, len, false);
+}
+
+static int icn8505_write_prog_data(struct icn8505_data *icn8505, int reg,
+ const void *buf, int len)
+{
+ return icn8505_write_xfer(icn8505->client, ICN8505_PROG_I2C_ADDR, reg,
+ ICN8505_PROG_REG_ADDR_WIDTH, buf, len, false);
+}
+
+static int icn8505_write_prog_reg(struct icn8505_data *icn8505, int reg, u8 val)
+{
+ return icn8505_write_xfer(icn8505->client, ICN8505_PROG_I2C_ADDR, reg,
+ ICN8505_PROG_REG_ADDR_WIDTH, &val, 1, false);
+}
+
+/*
+ * Note this function uses a number of magic register addresses and values,
+ * there are deliberately no defines for these because the algorithm is taken
+ * from the icn85xx Android driver and I do not want to make up possibly wrong
+ * names for the addresses and/or values.
+ */
+static int icn8505_try_fw_upload(struct icn8505_data *icn8505,
+ const struct firmware *fw)
+{
+ struct device *dev = &icn8505->client->dev;
+ size_t offset, count;
+ int error;
+ u8 buf[4];
+ u32 crc;
+
+ /* Put the controller in programming mode */
+ error = icn8505_write_prog_reg(icn8505, 0xcc3355, 0x5a);
+ if (error)
+ return error;
+
+ usleep_range(2000, 5000);
+
+ error = icn8505_write_prog_reg(icn8505, 0x040400, 0x01);
+ if (error)
+ return error;
+
+ usleep_range(2000, 5000);
+
+ error = icn8505_read_prog_data(icn8505, 0x040002, buf, 1);
+ if (error)
+ return error;
+
+ if (buf[0] != 0x85) {
+ dev_err(dev, "Failed to enter programming mode\n");
+ return -ENODEV;
+ }
+
+ usleep_range(1000, 5000);
+
+ /* Enable CRC mode */
+ error = icn8505_write_prog_reg(icn8505, 0x40028, 1);
+ if (error)
+ return error;
+
+ /* Send the firmware to SRAM */
+ for (offset = 0; offset < fw->size; offset += count) {
+ count = min_t(size_t, fw->size - offset, 32);
+ error = icn8505_write_prog_data(icn8505, offset,
+ fw->data + offset, count);
+ if (error)
+ return error;
+ }
+
+ /* Disable CRC mode */
+ error = icn8505_write_prog_reg(icn8505, 0x40028, 0);
+ if (error)
+ return error;
+
+ /* Get and check length and CRC */
+ error = icn8505_read_prog_data(icn8505, 0x40034, buf, 2);
+ if (error)
+ return error;
+
+ if (get_unaligned_le16(buf) != fw->size) {
+ dev_warn(dev, "Length mismatch after uploading fw\n");
+ return -EIO;
+ }
+
+ error = icn8505_read_prog_data(icn8505, 0x4002c, buf, 4);
+ if (error)
+ return error;
+
+ crc = crc32_be(0, fw->data, fw->size);
+ if (get_unaligned_le32(buf) != crc) {
+ dev_warn(dev, "CRC mismatch after uploading fw\n");
+ return -EIO;
+ }
+
+ /* Boot controller from SRAM */
+ error = icn8505_write_prog_reg(icn8505, 0x40400, 0x03);
+ if (error)
+ return error;
+
+ usleep_range(2000, 5000);
+ return 0;
+}
+
+static int icn8505_upload_fw(struct icn8505_data *icn8505)
+{
+ struct device *dev = &icn8505->client->dev;
+ const struct firmware *fw;
+ int i, error;
+
+ /*
+ * Always load the firmware, even if we don't need it at boot, we
+ * we may need it at resume. Having loaded it once will make the
+ * firmware class code cache it at suspend/resume.
+ */
+ error = request_firmware(&fw, icn8505->firmware_name, dev);
+ if (error) {
+ dev_err(dev, "Firmware request error %d\n", error);
+ return error;
+ }
+
+ /* Check if the controller is not already up and running */
+ if (icn8505_read_reg_silent(icn8505, 0x000a) == 0x85)
+ goto success;
+
+ for (i = 1; i <= MAX_FW_UPLOAD_TRIES; i++) {
+ error = icn8505_try_fw_upload(icn8505, fw);
+ if (!error)
+ goto success;
+
+ dev_err(dev, "Failed to upload firmware: %d (attempt %d/%d)\n",
+ error, i, MAX_FW_UPLOAD_TRIES);
+ usleep_range(2000, 5000);
+ }
+
+success:
+ release_firmware(fw);
+ return error;
+}
+
+static bool icn8505_touch_active(u8 event)
+{
+ return event == ICN8505_EVENT_UPDATE1 ||
+ event == ICN8505_EVENT_UPDATE2;
+}
+
+static irqreturn_t icn8505_irq(int irq, void *dev_id)
+{
+ struct icn8505_data *icn8505 = dev_id;
+ struct device *dev = &icn8505->client->dev;
+ struct icn8505_touch_data touch_data;
+ int i, error;
+
+ error = icn8505_read_data(icn8505, ICN8505_REG_TOUCHDATA,
+ &touch_data, sizeof(touch_data));
+ if (error) {
+ dev_err(dev, "Error reading touch data: %d\n", error);
+ return IRQ_HANDLED;
+ }
+
+ if (touch_data.touch_count > ICN8505_MAX_TOUCHES) {
+ dev_warn(dev, "Too many touches %d > %d\n",
+ touch_data.touch_count, ICN8505_MAX_TOUCHES);
+ touch_data.touch_count = ICN8505_MAX_TOUCHES;
+ }
+
+ for (i = 0; i < touch_data.touch_count; i++) {
+ struct icn8505_touch *touch = &touch_data.touches[i];
+ bool act = icn8505_touch_active(touch->event);
+
+ input_mt_slot(icn8505->input, touch->slot);
+ input_mt_report_slot_state(icn8505->input, MT_TOOL_FINGER, act);
+ if (!act)
+ continue;
+
+ touchscreen_report_pos(icn8505->input, &icn8505->prop,
+ get_unaligned_le16(touch->x),
+ get_unaligned_le16(touch->y),
+ true);
+ }
+
+ input_mt_sync_frame(icn8505->input);
+ input_report_key(icn8505->input, KEY_LEFTMETA,
+ touch_data.softbutton == 1);
+ input_sync(icn8505->input);
+
+ return IRQ_HANDLED;
+}
+
+static int icn8505_probe_acpi(struct icn8505_data *icn8505, struct device *dev)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ const char *subsys = "unknown";
+ struct acpi_device *adev;
+ union acpi_object *obj;
+ acpi_status status;
+
+ adev = ACPI_COMPANION(dev);
+ if (!adev)
+ return -ENODEV;
+
+ status = acpi_evaluate_object(adev->handle, "_SUB", NULL, &buffer);
+ if (ACPI_SUCCESS(status)) {
+ obj = buffer.pointer;
+ if (obj->type == ACPI_TYPE_STRING)
+ subsys = obj->string.pointer;
+ else
+ dev_warn(dev, "Warning ACPI _SUB did not return a string\n");
+ } else {
+ dev_warn(dev, "Warning ACPI _SUB failed: %#x\n", status);
+ buffer.pointer = NULL;
+ }
+
+ snprintf(icn8505->firmware_name, sizeof(icn8505->firmware_name),
+ "chipone/icn8505-%s.fw", subsys);
+
+ kfree(buffer.pointer);
+ return 0;
+}
+
+static int icn8505_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct icn8505_data *icn8505;
+ struct input_dev *input;
+ __le16 resolution[2];
+ int error;
+
+ if (!client->irq) {
+ dev_err(dev, "No irq specified\n");
+ return -EINVAL;
+ }
+
+ icn8505 = devm_kzalloc(dev, sizeof(*icn8505), GFP_KERNEL);
+ if (!icn8505)
+ return -ENOMEM;
+
+ input = devm_input_allocate_device(dev);
+ if (!input)
+ return -ENOMEM;
+
+ input->name = client->name;
+ input->id.bustype = BUS_I2C;
+
+ input_set_capability(input, EV_ABS, ABS_MT_POSITION_X);
+ input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y);
+ input_set_capability(input, EV_KEY, KEY_LEFTMETA);
+
+ icn8505->client = client;
+ icn8505->input = input;
+ input_set_drvdata(input, icn8505);
+
+ error = icn8505_probe_acpi(icn8505, dev);
+ if (error)
+ return error;
+
+ error = icn8505_upload_fw(icn8505);
+ if (error)
+ return error;
+
+ error = icn8505_read_data(icn8505, ICN8505_REG_CONFIGDATA,
+ resolution, sizeof(resolution));
+ if (error) {
+ dev_err(dev, "Error reading resolution: %d\n", error);
+ return error;
+ }
+
+ input_set_abs_params(input, ABS_MT_POSITION_X, 0,
+ le16_to_cpu(resolution[0]) - 1, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
+ le16_to_cpu(resolution[1]) - 1, 0, 0);
+
+ touchscreen_parse_properties(input, true, &icn8505->prop);
+ if (!input_abs_get_max(input, ABS_MT_POSITION_X) ||
+ !input_abs_get_max(input, ABS_MT_POSITION_Y)) {
+ dev_err(dev, "Error touchscreen-size-x and/or -y missing\n");
+ return -EINVAL;
+ }
+
+ error = input_mt_init_slots(input, ICN8505_MAX_TOUCHES,
+ INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+ if (error)
+ return error;
+
+ error = devm_request_threaded_irq(dev, client->irq, NULL, icn8505_irq,
+ IRQF_ONESHOT, client->name, icn8505);
+ if (error) {
+ dev_err(dev, "Error requesting irq: %d\n", error);
+ return error;
+ }
+
+ error = input_register_device(input);
+ if (error)
+ return error;
+
+ i2c_set_clientdata(client, icn8505);
+ return 0;
+}
+
+static int __maybe_unused icn8505_suspend(struct device *dev)
+{
+ struct icn8505_data *icn8505 = i2c_get_clientdata(to_i2c_client(dev));
+
+ disable_irq(icn8505->client->irq);
+
+ icn8505_write_reg(icn8505, ICN8505_REG_POWER, ICN8505_POWER_HIBERNATE);
+
+ return 0;
+}
+
+static int __maybe_unused icn8505_resume(struct device *dev)
+{
+ struct icn8505_data *icn8505 = i2c_get_clientdata(to_i2c_client(dev));
+ int error;
+
+ error = icn8505_upload_fw(icn8505);
+ if (error)
+ return error;
+
+ enable_irq(icn8505->client->irq);
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(icn8505_pm_ops, icn8505_suspend, icn8505_resume);
+
+static const struct acpi_device_id icn8505_acpi_match[] = {
+ { "CHPN0001" },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, icn8505_acpi_match);
+
+static struct i2c_driver icn8505_driver = {
+ .driver = {
+ .name = "chipone_icn8505",
+ .pm = &icn8505_pm_ops,
+ .acpi_match_table = icn8505_acpi_match,
+ },
+ .probe_new = icn8505_probe,
+};
+
+module_i2c_driver(icn8505_driver);
+
+MODULE_DESCRIPTION("ChipOne icn8505 I2C Touchscreen Driver");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index 9736c83dd418..f2d9c2c41885 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -933,6 +933,7 @@ MODULE_DEVICE_TABLE(i2c, goodix_ts_id);
#ifdef CONFIG_ACPI
static const struct acpi_device_id goodix_acpi_match[] = {
{ "GDIX1001", 0 },
+ { "GDIX1002", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, goodix_acpi_match);
diff --git a/drivers/input/touchscreen/mk712.c b/drivers/input/touchscreen/mk712.c
index bd5352824f77..c179060525ae 100644
--- a/drivers/input/touchscreen/mk712.c
+++ b/drivers/input/touchscreen/mk712.c
@@ -17,7 +17,7 @@
* found in Gateway AOL Connected Touchpad computers.
*
* Documentation for ICS MK712 can be found at:
- * http://www.idt.com/products/getDoc.cfm?docID=18713923
+ * https://www.idt.com/general-parts/mk712-touch-screen-controller
*/
/*
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index f1043ae71dcc..b86c1e5fbc11 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -34,6 +34,8 @@
#define SEQ_SETTLE 275
#define MAX_12BIT ((1 << 12) - 1)
+#define TSC_IRQENB_MASK (IRQENB_FIFO0THRES | IRQENB_EOS | IRQENB_HW_PEN)
+
static const int config_pins[] = {
STEPCONFIG_XPP,
STEPCONFIG_XNN,
@@ -274,6 +276,7 @@ static irqreturn_t titsc_irq(int irq, void *dev)
if (status & IRQENB_HW_PEN) {
ts_dev->pen_down = true;
irqclr |= IRQENB_HW_PEN;
+ pm_stay_awake(ts_dev->mfd_tscadc->dev);
}
if (status & IRQENB_PENUP) {
@@ -283,6 +286,7 @@ static irqreturn_t titsc_irq(int irq, void *dev)
input_report_key(input_dev, BTN_TOUCH, 0);
input_report_abs(input_dev, ABS_PRESSURE, 0);
input_sync(input_dev);
+ pm_relax(ts_dev->mfd_tscadc->dev);
} else {
ts_dev->pen_down = true;
}
@@ -432,6 +436,7 @@ static int titsc_probe(struct platform_device *pdev)
goto err_free_mem;
}
+ titsc_writel(ts_dev, REG_IRQSTATUS, TSC_IRQENB_MASK);
titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_EOS);
err = titsc_config_wires(ts_dev);
@@ -495,6 +500,7 @@ static int __maybe_unused titsc_suspend(struct device *dev)
tscadc_dev = ti_tscadc_dev_get(to_platform_device(dev));
if (device_may_wakeup(tscadc_dev->dev)) {
+ titsc_writel(ts_dev, REG_IRQSTATUS, TSC_IRQENB_MASK);
idle = titsc_readl(ts_dev, REG_IRQENABLE);
titsc_writel(ts_dev, REG_IRQENABLE,
(idle | IRQENB_HW_PEN));
@@ -513,6 +519,7 @@ static int __maybe_unused titsc_resume(struct device *dev)
titsc_writel(ts_dev, REG_IRQWAKEUP,
0x00);
titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);
+ pm_relax(ts_dev->mfd_tscadc->dev);
}
titsc_step_config(ts_dev);
titsc_writel(ts_dev, REG_FIFO0THR,
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index c6cf90868503..d61570d64ee7 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -440,6 +440,8 @@ static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
#define MTOUCHUSB_RESET 7
#define MTOUCHUSB_REQ_CTRLLR_ID 10
+#define MTOUCHUSB_REQ_CTRLLR_ID_LEN 16
+
static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
{
if (hwcalib_xy) {
@@ -454,11 +456,93 @@ static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
return 1;
}
+struct mtouch_priv {
+ u8 fw_rev_major;
+ u8 fw_rev_minor;
+};
+
+static ssize_t mtouch_firmware_rev_show(struct device *dev,
+ struct device_attribute *attr, char *output)
+{
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
+ struct mtouch_priv *priv = usbtouch->priv;
+
+ return scnprintf(output, PAGE_SIZE, "%1x.%1x\n",
+ priv->fw_rev_major, priv->fw_rev_minor);
+}
+static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL);
+
+static struct attribute *mtouch_attrs[] = {
+ &dev_attr_firmware_rev.attr,
+ NULL
+};
+
+static const struct attribute_group mtouch_attr_group = {
+ .attrs = mtouch_attrs,
+};
+
+static int mtouch_get_fw_revision(struct usbtouch_usb *usbtouch)
+{
+ struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
+ struct mtouch_priv *priv = usbtouch->priv;
+ u8 *buf;
+ int ret;
+
+ buf = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO);
+ if (!buf)
+ return -ENOMEM;
+
+ ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ MTOUCHUSB_REQ_CTRLLR_ID,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, 0, buf, MTOUCHUSB_REQ_CTRLLR_ID_LEN,
+ USB_CTRL_SET_TIMEOUT);
+ if (ret != MTOUCHUSB_REQ_CTRLLR_ID_LEN) {
+ dev_warn(&usbtouch->interface->dev,
+ "Failed to read FW rev: %d\n", ret);
+ ret = ret < 0 ? ret : -EIO;
+ goto free;
+ }
+
+ priv->fw_rev_major = buf[3];
+ priv->fw_rev_minor = buf[4];
+
+ ret = 0;
+
+free:
+ kfree(buf);
+ return ret;
+}
+
+static int mtouch_alloc(struct usbtouch_usb *usbtouch)
+{
+ int ret;
+
+ usbtouch->priv = kmalloc(sizeof(struct mtouch_priv), GFP_KERNEL);
+ if (!usbtouch->priv)
+ return -ENOMEM;
+
+ ret = sysfs_create_group(&usbtouch->interface->dev.kobj,
+ &mtouch_attr_group);
+ if (ret) {
+ kfree(usbtouch->priv);
+ usbtouch->priv = NULL;
+ return ret;
+ }
+
+ return 0;
+}
+
static int mtouch_init(struct usbtouch_usb *usbtouch)
{
int ret, i;
struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
+ ret = mtouch_get_fw_revision(usbtouch);
+ if (ret)
+ return ret;
+
ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
MTOUCHUSB_RESET,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
@@ -492,6 +576,14 @@ static int mtouch_init(struct usbtouch_usb *usbtouch)
return 0;
}
+
+static void mtouch_exit(struct usbtouch_usb *usbtouch)
+{
+ struct mtouch_priv *priv = usbtouch->priv;
+
+ sysfs_remove_group(&usbtouch->interface->dev.kobj, &mtouch_attr_group);
+ kfree(priv);
+}
#endif
@@ -1119,7 +1211,9 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.max_yc = 0x4000,
.rept_size = 11,
.read_data = mtouch_read_data,
+ .alloc = mtouch_alloc,
.init = mtouch_init,
+ .exit = mtouch_exit,
},
#endif