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OpenCloudOS-Kernel/drivers/input/touchscreen/silead.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/* -------------------------------------------------------------------------
* Copyright (C) 2014-2015, Intel Corporation
*
* Derived from:
* gslX68X.c
* Copyright (C) 2010-2015, Shanghai Sileadinc Co.Ltd
*
* -------------------------------------------------------------------------
*/
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/acpi.h>
#include <linux/interrupt.h>
#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/irq.h>
#include <linux/regulator/consumer.h>
#include <asm/unaligned.h>
#define SILEAD_TS_NAME "silead_ts"
#define SILEAD_REG_RESET 0xE0
#define SILEAD_REG_DATA 0x80
#define SILEAD_REG_TOUCH_NR 0x80
#define SILEAD_REG_POWER 0xBC
#define SILEAD_REG_CLOCK 0xE4
#define SILEAD_REG_STATUS 0xB0
#define SILEAD_REG_ID 0xFC
#define SILEAD_REG_MEM_CHECK 0xB0
#define SILEAD_STATUS_OK 0x5A5A5A5A
#define SILEAD_TS_DATA_LEN 44
#define SILEAD_CLOCK 0x04
#define SILEAD_CMD_RESET 0x88
#define SILEAD_CMD_START 0x00
#define SILEAD_POINT_DATA_LEN 0x04
#define SILEAD_POINT_Y_OFF 0x00
#define SILEAD_POINT_Y_MSB_OFF 0x01
#define SILEAD_POINT_X_OFF 0x02
#define SILEAD_POINT_X_MSB_OFF 0x03
#define SILEAD_EXTRA_DATA_MASK 0xF0
#define SILEAD_CMD_SLEEP_MIN 10000
#define SILEAD_CMD_SLEEP_MAX 20000
#define SILEAD_POWER_SLEEP 20
#define SILEAD_STARTUP_SLEEP 30
#define SILEAD_MAX_FINGERS 10
enum silead_ts_power {
SILEAD_POWER_ON = 1,
SILEAD_POWER_OFF = 0
};
struct silead_ts_data {
struct i2c_client *client;
struct gpio_desc *gpio_power;
struct input_dev *input;
struct input_dev *pen_input;
struct regulator_bulk_data regulators[2];
char fw_name[64];
struct touchscreen_properties prop;
u32 max_fingers;
u32 chip_id;
struct input_mt_pos pos[SILEAD_MAX_FINGERS];
int slots[SILEAD_MAX_FINGERS];
int id[SILEAD_MAX_FINGERS];
u32 efi_fw_min_max[4];
bool efi_fw_min_max_set;
bool pen_supported;
bool pen_down;
u32 pen_x_res;
u32 pen_y_res;
int pen_up_count;
};
struct silead_fw_data {
u32 offset;
u32 val;
};
static void silead_apply_efi_fw_min_max(struct silead_ts_data *data)
{
struct input_absinfo *absinfo_x = &data->input->absinfo[ABS_MT_POSITION_X];
struct input_absinfo *absinfo_y = &data->input->absinfo[ABS_MT_POSITION_Y];
if (!data->efi_fw_min_max_set)
return;
absinfo_x->minimum = data->efi_fw_min_max[0];
absinfo_x->maximum = data->efi_fw_min_max[1];
absinfo_y->minimum = data->efi_fw_min_max[2];
absinfo_y->maximum = data->efi_fw_min_max[3];
if (data->prop.invert_x) {
absinfo_x->maximum -= absinfo_x->minimum;
absinfo_x->minimum = 0;
}
if (data->prop.invert_y) {
absinfo_y->maximum -= absinfo_y->minimum;
absinfo_y->minimum = 0;
}
if (data->prop.swap_x_y) {
swap(absinfo_x->minimum, absinfo_y->minimum);
swap(absinfo_x->maximum, absinfo_y->maximum);
}
}
static int silead_ts_request_input_dev(struct silead_ts_data *data)
{
struct device *dev = &data->client->dev;
int error;
data->input = devm_input_allocate_device(dev);
if (!data->input) {
dev_err(dev,
"Failed to allocate input device\n");
return -ENOMEM;
}
input_set_abs_params(data->input, ABS_MT_POSITION_X, 0, 4095, 0, 0);
input_set_abs_params(data->input, ABS_MT_POSITION_Y, 0, 4095, 0, 0);
touchscreen_parse_properties(data->input, true, &data->prop);
silead_apply_efi_fw_min_max(data);
input_mt_init_slots(data->input, data->max_fingers,
INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED |
INPUT_MT_TRACK);
if (device_property_read_bool(dev, "silead,home-button"))
input_set_capability(data->input, EV_KEY, KEY_LEFTMETA);
data->input->name = SILEAD_TS_NAME;
data->input->phys = "input/ts";
data->input->id.bustype = BUS_I2C;
error = input_register_device(data->input);
if (error) {
dev_err(dev, "Failed to register input device: %d\n", error);
return error;
}
return 0;
}
static int silead_ts_request_pen_input_dev(struct silead_ts_data *data)
{
struct device *dev = &data->client->dev;
int error;
if (!data->pen_supported)
return 0;
data->pen_input = devm_input_allocate_device(dev);
if (!data->pen_input)
return -ENOMEM;
input_set_abs_params(data->pen_input, ABS_X, 0, 4095, 0, 0);
input_set_abs_params(data->pen_input, ABS_Y, 0, 4095, 0, 0);
input_set_capability(data->pen_input, EV_KEY, BTN_TOUCH);
input_set_capability(data->pen_input, EV_KEY, BTN_TOOL_PEN);
set_bit(INPUT_PROP_DIRECT, data->pen_input->propbit);
touchscreen_parse_properties(data->pen_input, false, &data->prop);
input_abs_set_res(data->pen_input, ABS_X, data->pen_x_res);
input_abs_set_res(data->pen_input, ABS_Y, data->pen_y_res);
data->pen_input->name = SILEAD_TS_NAME " pen";
data->pen_input->phys = "input/pen";
data->input->id.bustype = BUS_I2C;
error = input_register_device(data->pen_input);
if (error) {
dev_err(dev, "Failed to register pen input device: %d\n", error);
return error;
}
return 0;
}
static void silead_ts_set_power(struct i2c_client *client,
enum silead_ts_power state)
{
struct silead_ts_data *data = i2c_get_clientdata(client);
if (data->gpio_power) {
gpiod_set_value_cansleep(data->gpio_power, state);
msleep(SILEAD_POWER_SLEEP);
}
}
static bool silead_ts_handle_pen_data(struct silead_ts_data *data, u8 *buf)
{
u8 *coord = buf + SILEAD_POINT_DATA_LEN;
struct input_mt_pos pos;
if (!data->pen_supported || buf[2] != 0x00 || buf[3] != 0x00)
return false;
if (buf[0] == 0x00 && buf[1] == 0x00 && data->pen_down) {
data->pen_up_count++;
if (data->pen_up_count == 6) {
data->pen_down = false;
goto sync;
}
return true;
}
if (buf[0] == 0x01 && buf[1] == 0x08) {
touchscreen_set_mt_pos(&pos, &data->prop,
get_unaligned_le16(&coord[SILEAD_POINT_X_OFF]) & 0xfff,
get_unaligned_le16(&coord[SILEAD_POINT_Y_OFF]) & 0xfff);
input_report_abs(data->pen_input, ABS_X, pos.x);
input_report_abs(data->pen_input, ABS_Y, pos.y);
data->pen_up_count = 0;
data->pen_down = true;
goto sync;
}
return false;
sync:
input_report_key(data->pen_input, BTN_TOOL_PEN, data->pen_down);
input_report_key(data->pen_input, BTN_TOUCH, data->pen_down);
input_sync(data->pen_input);
return true;
}
static void silead_ts_read_data(struct i2c_client *client)
{
struct silead_ts_data *data = i2c_get_clientdata(client);
struct input_dev *input = data->input;
struct device *dev = &client->dev;
u8 *bufp, buf[SILEAD_TS_DATA_LEN];
int touch_nr, softbutton, error, i;
bool softbutton_pressed = false;
error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_DATA,
SILEAD_TS_DATA_LEN, buf);
if (error < 0) {
dev_err(dev, "Data read error %d\n", error);
return;
}
if (buf[0] > data->max_fingers) {
dev_warn(dev, "More touches reported then supported %d > %d\n",
buf[0], data->max_fingers);
buf[0] = data->max_fingers;
}
if (silead_ts_handle_pen_data(data, buf))
goto sync; /* Pen is down, release all previous touches */
touch_nr = 0;
bufp = buf + SILEAD_POINT_DATA_LEN;
for (i = 0; i < buf[0]; i++, bufp += SILEAD_POINT_DATA_LEN) {
softbutton = (bufp[SILEAD_POINT_Y_MSB_OFF] &
SILEAD_EXTRA_DATA_MASK) >> 4;
if (softbutton) {
/*
* For now only respond to softbutton == 0x01, some
* tablets *without* a capacative button send 0x04
* when crossing the edges of the screen.
*/
if (softbutton == 0x01)
softbutton_pressed = true;
continue;
}
/*
* Bits 4-7 are the touch id, note not all models have
* hardware touch ids so atm we don't use these.
*/
data->id[touch_nr] = (bufp[SILEAD_POINT_X_MSB_OFF] &
SILEAD_EXTRA_DATA_MASK) >> 4;
touchscreen_set_mt_pos(&data->pos[touch_nr], &data->prop,
get_unaligned_le16(&bufp[SILEAD_POINT_X_OFF]) & 0xfff,
get_unaligned_le16(&bufp[SILEAD_POINT_Y_OFF]) & 0xfff);
touch_nr++;
}
input_mt_assign_slots(input, data->slots, data->pos, touch_nr, 0);
for (i = 0; i < touch_nr; i++) {
input_mt_slot(input, data->slots[i]);
input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
input_report_abs(input, ABS_MT_POSITION_X, data->pos[i].x);
input_report_abs(input, ABS_MT_POSITION_Y, data->pos[i].y);
dev_dbg(dev, "x=%d y=%d hw_id=%d sw_id=%d\n", data->pos[i].x,
data->pos[i].y, data->id[i], data->slots[i]);
}
sync:
input_mt_sync_frame(input);
input_report_key(input, KEY_LEFTMETA, softbutton_pressed);
input_sync(input);
}
static int silead_ts_init(struct i2c_client *client)
{
struct silead_ts_data *data = i2c_get_clientdata(client);
int error;
error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
SILEAD_CMD_RESET);
if (error)
goto i2c_write_err;
usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
error = i2c_smbus_write_byte_data(client, SILEAD_REG_TOUCH_NR,
data->max_fingers);
if (error)
goto i2c_write_err;
usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK,
SILEAD_CLOCK);
if (error)
goto i2c_write_err;
usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
SILEAD_CMD_START);
if (error)
goto i2c_write_err;
usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
return 0;
i2c_write_err:
dev_err(&client->dev, "Registers clear error %d\n", error);
return error;
}
static int silead_ts_reset(struct i2c_client *client)
{
int error;
error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
SILEAD_CMD_RESET);
if (error)
goto i2c_write_err;
usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK,
SILEAD_CLOCK);
if (error)
goto i2c_write_err;
usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
error = i2c_smbus_write_byte_data(client, SILEAD_REG_POWER,
SILEAD_CMD_START);
if (error)
goto i2c_write_err;
usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
return 0;
i2c_write_err:
dev_err(&client->dev, "Chip reset error %d\n", error);
return error;
}
static int silead_ts_startup(struct i2c_client *client)
{
int error;
error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET, 0x00);
if (error) {
dev_err(&client->dev, "Startup error %d\n", error);
return error;
}
msleep(SILEAD_STARTUP_SLEEP);
return 0;
}
static int silead_ts_load_fw(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct silead_ts_data *data = i2c_get_clientdata(client);
const struct firmware *fw = NULL;
struct silead_fw_data *fw_data;
unsigned int fw_size, i;
int error;
dev_dbg(dev, "Firmware file name: %s", data->fw_name);
/*
* Unfortunately, at the time of writing this comment, we have been unable to
* get permission from Silead, or from device OEMs, to distribute the necessary
* Silead firmware files in linux-firmware.
*
* On a whole bunch of devices the UEFI BIOS code contains a touchscreen driver,
* which contains an embedded copy of the firmware. The fw-loader code has a
* "platform" fallback mechanism, which together with info on the firmware
* from drivers/platform/x86/touchscreen_dmi.c will use the firmware from the
* UEFI driver when the firmware is missing from /lib/firmware. This makes the
* touchscreen work OOTB without users needing to manually download the firmware.
*
* The firmware bundled with the original Windows/Android is usually newer then
* the firmware in the UEFI driver and it is better calibrated. This better
* calibration can lead to significant differences in the reported min/max
* coordinates.
*
* To deal with this we first try to load the firmware without "platform"
* fallback. If that fails we retry with "platform" fallback and if that
* succeeds we apply an (optional) set of alternative min/max values from the
* "silead,efi-fw-min-max" property.
*/
error = firmware_request_nowarn(&fw, data->fw_name, dev);
if (error) {
error = firmware_request_platform(&fw, data->fw_name, dev);
if (error) {
dev_err(dev, "Firmware request error %d\n", error);
return error;
}
error = device_property_read_u32_array(dev, "silead,efi-fw-min-max",
data->efi_fw_min_max,
ARRAY_SIZE(data->efi_fw_min_max));
if (!error)
data->efi_fw_min_max_set = true;
/* The EFI (platform) embedded fw does not have pen support */
if (data->pen_supported) {
dev_warn(dev, "Warning loading '%s' from filesystem failed, using EFI embedded copy.\n",
data->fw_name);
dev_warn(dev, "Warning pen support is known to be broken in the EFI embedded fw version\n");
data->pen_supported = false;
}
}
fw_size = fw->size / sizeof(*fw_data);
fw_data = (struct silead_fw_data *)fw->data;
for (i = 0; i < fw_size; i++) {
error = i2c_smbus_write_i2c_block_data(client,
fw_data[i].offset,
4,
(u8 *)&fw_data[i].val);
if (error) {
dev_err(dev, "Firmware load error %d\n", error);
break;
}
}
release_firmware(fw);
return error ?: 0;
}
static u32 silead_ts_get_status(struct i2c_client *client)
{
int error;
__le32 status;
error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_STATUS,
sizeof(status), (u8 *)&status);
if (error < 0) {
dev_err(&client->dev, "Status read error %d\n", error);
return error;
}
return le32_to_cpu(status);
}
static int silead_ts_get_id(struct i2c_client *client)
{
struct silead_ts_data *data = i2c_get_clientdata(client);
__le32 chip_id;
int error;
error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_ID,
sizeof(chip_id), (u8 *)&chip_id);
if (error < 0)
return error;
data->chip_id = le32_to_cpu(chip_id);
dev_info(&client->dev, "Silead chip ID: 0x%8X", data->chip_id);
return 0;
}
static int silead_ts_setup(struct i2c_client *client)
{
int error;
u32 status;
/*
* Some buggy BIOS-es bring up the chip in a stuck state where it
* blocks the I2C bus. The following steps are necessary to
* unstuck the chip / bus:
* 1. Turn off the Silead chip.
* 2. Try to do an I2C transfer with the chip, this will fail in
* response to which the I2C-bus-driver will call:
* i2c_recover_bus() which will unstuck the I2C-bus. Note the
* unstuck-ing of the I2C bus only works if we first drop the
* chip off the bus by turning it off.
* 3. Turn the chip back on.
*
* On the x86/ACPI systems were this problem is seen, step 1. and
* 3. require making ACPI calls and dealing with ACPI Power
* Resources. The workaround below runtime-suspends the chip to
* turn it off, leaving it up to the ACPI subsystem to deal with
* this.
*/
if (device_property_read_bool(&client->dev,
"silead,stuck-controller-bug")) {
pm_runtime_set_active(&client->dev);
pm_runtime_enable(&client->dev);
pm_runtime_allow(&client->dev);
pm_runtime_suspend(&client->dev);
dev_warn(&client->dev, FW_BUG "Stuck I2C bus: please ignore the next 'controller timed out' error\n");
silead_ts_get_id(client);
/* The forbid will also resume the device */
pm_runtime_forbid(&client->dev);
pm_runtime_disable(&client->dev);
}
silead_ts_set_power(client, SILEAD_POWER_OFF);
silead_ts_set_power(client, SILEAD_POWER_ON);
error = silead_ts_get_id(client);
if (error) {
dev_err(&client->dev, "Chip ID read error %d\n", error);
return error;
}
error = silead_ts_init(client);
if (error)
return error;
error = silead_ts_reset(client);
if (error)
return error;
error = silead_ts_load_fw(client);
if (error)
return error;
error = silead_ts_startup(client);
if (error)
return error;
status = silead_ts_get_status(client);
if (status != SILEAD_STATUS_OK) {
dev_err(&client->dev,
"Initialization error, status: 0x%X\n", status);
return -ENODEV;
}
return 0;
}
static irqreturn_t silead_ts_threaded_irq_handler(int irq, void *id)
{
struct silead_ts_data *data = id;
struct i2c_client *client = data->client;
silead_ts_read_data(client);
return IRQ_HANDLED;
}
static void silead_ts_read_props(struct i2c_client *client)
{
struct silead_ts_data *data = i2c_get_clientdata(client);
struct device *dev = &client->dev;
const char *str;
int error;
error = device_property_read_u32(dev, "silead,max-fingers",
&data->max_fingers);
if (error) {
dev_dbg(dev, "Max fingers read error %d\n", error);
data->max_fingers = 5; /* Most devices handle up-to 5 fingers */
}
error = device_property_read_string(dev, "firmware-name", &str);
if (!error)
snprintf(data->fw_name, sizeof(data->fw_name),
"silead/%s", str);
else
dev_dbg(dev, "Firmware file name read error. Using default.");
data->pen_supported = device_property_read_bool(dev, "silead,pen-supported");
device_property_read_u32(dev, "silead,pen-resolution-x", &data->pen_x_res);
device_property_read_u32(dev, "silead,pen-resolution-y", &data->pen_y_res);
}
#ifdef CONFIG_ACPI
static int silead_ts_set_default_fw_name(struct silead_ts_data *data,
const struct i2c_device_id *id)
{
const struct acpi_device_id *acpi_id;
struct device *dev = &data->client->dev;
int i;
if (ACPI_HANDLE(dev)) {
acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!acpi_id)
return -ENODEV;
snprintf(data->fw_name, sizeof(data->fw_name),
"silead/%s.fw", acpi_id->id);
for (i = 0; i < strlen(data->fw_name); i++)
data->fw_name[i] = tolower(data->fw_name[i]);
} else {
snprintf(data->fw_name, sizeof(data->fw_name),
"silead/%s.fw", id->name);
}
return 0;
}
#else
static int silead_ts_set_default_fw_name(struct silead_ts_data *data,
const struct i2c_device_id *id)
{
snprintf(data->fw_name, sizeof(data->fw_name),
"silead/%s.fw", id->name);
return 0;
}
#endif
static void silead_disable_regulator(void *arg)
{
struct silead_ts_data *data = arg;
regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
}
static int silead_ts_probe(struct i2c_client *client)
{
const struct i2c_device_id *id = i2c_client_get_device_id(client);
struct silead_ts_data *data;
struct device *dev = &client->dev;
int error;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_I2C |
I2C_FUNC_SMBUS_READ_I2C_BLOCK |
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) {
dev_err(dev, "I2C functionality check failed\n");
return -ENXIO;
}
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
error = silead_ts_set_default_fw_name(data, id);
if (error)
return error;
silead_ts_read_props(client);
/* We must have the IRQ provided by DT or ACPI subsystem */
if (client->irq <= 0)
return -ENODEV;
data->regulators[0].supply = "vddio";
data->regulators[1].supply = "avdd";
error = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators),
data->regulators);
if (error)
return error;
/*
* Enable regulators at probe and disable them at remove, we need
* to keep the chip powered otherwise it forgets its firmware.
*/
error = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
data->regulators);
if (error)
return error;
error = devm_add_action_or_reset(dev, silead_disable_regulator, data);
if (error)
return error;
/* Power GPIO pin */
data->gpio_power = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
if (IS_ERR(data->gpio_power)) {
if (PTR_ERR(data->gpio_power) != -EPROBE_DEFER)
dev_err(dev, "Shutdown GPIO request failed\n");
return PTR_ERR(data->gpio_power);
}
error = silead_ts_setup(client);
if (error)
return error;
error = silead_ts_request_input_dev(data);
if (error)
return error;
error = silead_ts_request_pen_input_dev(data);
if (error)
return error;
error = devm_request_threaded_irq(dev, client->irq,
NULL, silead_ts_threaded_irq_handler,
IRQF_ONESHOT, client->name, data);
if (error) {
if (error != -EPROBE_DEFER)
dev_err(dev, "IRQ request failed %d\n", error);
return error;
}
return 0;
}
static int silead_ts_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
disable_irq(client->irq);
silead_ts_set_power(client, SILEAD_POWER_OFF);
return 0;
}
static int silead_ts_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
bool second_try = false;
int error, status;
silead_ts_set_power(client, SILEAD_POWER_ON);
retry:
error = silead_ts_reset(client);
if (error)
return error;
if (second_try) {
error = silead_ts_load_fw(client);
if (error)
return error;
}
error = silead_ts_startup(client);
if (error)
return error;
status = silead_ts_get_status(client);
if (status != SILEAD_STATUS_OK) {
if (!second_try) {
second_try = true;
dev_dbg(dev, "Reloading firmware after unsuccessful resume\n");
goto retry;
}
dev_err(dev, "Resume error, status: 0x%02x\n", status);
return -ENODEV;
}
enable_irq(client->irq);
return 0;
}
static DEFINE_SIMPLE_DEV_PM_OPS(silead_ts_pm, silead_ts_suspend, silead_ts_resume);
static const struct i2c_device_id silead_ts_id[] = {
{ "gsl1680", 0 },
{ "gsl1688", 0 },
{ "gsl3670", 0 },
{ "gsl3675", 0 },
{ "gsl3692", 0 },
{ "mssl1680", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, silead_ts_id);
#ifdef CONFIG_ACPI
static const struct acpi_device_id silead_ts_acpi_match[] = {
{ "GSL1680", 0 },
{ "GSL1688", 0 },
{ "GSL3670", 0 },
{ "GSL3675", 0 },
{ "GSL3692", 0 },
{ "MSSL1680", 0 },
{ "MSSL0001", 0 },
{ "MSSL0002", 0 },
{ "MSSL0017", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, silead_ts_acpi_match);
#endif
#ifdef CONFIG_OF
static const struct of_device_id silead_ts_of_match[] = {
{ .compatible = "silead,gsl1680" },
{ .compatible = "silead,gsl1688" },
{ .compatible = "silead,gsl3670" },
{ .compatible = "silead,gsl3675" },
{ .compatible = "silead,gsl3692" },
{ },
};
MODULE_DEVICE_TABLE(of, silead_ts_of_match);
#endif
static struct i2c_driver silead_ts_driver = {
.probe = silead_ts_probe,
.id_table = silead_ts_id,
.driver = {
.name = SILEAD_TS_NAME,
.acpi_match_table = ACPI_PTR(silead_ts_acpi_match),
.of_match_table = of_match_ptr(silead_ts_of_match),
.pm = pm_sleep_ptr(&silead_ts_pm),
},
};
module_i2c_driver(silead_ts_driver);
MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>");
MODULE_DESCRIPTION("Silead I2C touchscreen driver");
MODULE_LICENSE("GPL");
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