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path: root/drivers/input/keyboard/mcs_touchkey.c
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Diffstat (limited to 'drivers/input/keyboard/mcs_touchkey.c')
-rw-r--r--drivers/input/keyboard/mcs_touchkey.c268
1 files changed, 0 insertions, 268 deletions
diff --git a/drivers/input/keyboard/mcs_touchkey.c b/drivers/input/keyboard/mcs_touchkey.c
deleted file mode 100644
index 2410f676c7f9..000000000000
--- a/drivers/input/keyboard/mcs_touchkey.c
+++ /dev/null
@@ -1,268 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Touchkey driver for MELFAS MCS5000/5080 controller
- *
- * Copyright (C) 2010 Samsung Electronics Co.Ltd
- * Author: HeungJun Kim <riverful.kim@samsung.com>
- * Author: Joonyoung Shim <jy0922.shim@samsung.com>
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
-#include <linux/platform_data/mcs.h>
-#include <linux/pm.h>
-
-/* MCS5000 Touchkey */
-#define MCS5000_TOUCHKEY_STATUS 0x04
-#define MCS5000_TOUCHKEY_STATUS_PRESS 7
-#define MCS5000_TOUCHKEY_FW 0x0a
-#define MCS5000_TOUCHKEY_BASE_VAL 0x61
-
-/* MCS5080 Touchkey */
-#define MCS5080_TOUCHKEY_STATUS 0x00
-#define MCS5080_TOUCHKEY_STATUS_PRESS 3
-#define MCS5080_TOUCHKEY_FW 0x01
-#define MCS5080_TOUCHKEY_BASE_VAL 0x1
-
-enum mcs_touchkey_type {
- MCS5000_TOUCHKEY,
- MCS5080_TOUCHKEY,
-};
-
-struct mcs_touchkey_chip {
- unsigned int status_reg;
- unsigned int pressbit;
- unsigned int press_invert;
- unsigned int baseval;
-};
-
-struct mcs_touchkey_data {
- void (*poweron)(bool);
-
- struct i2c_client *client;
- struct input_dev *input_dev;
- struct mcs_touchkey_chip chip;
- unsigned int key_code;
- unsigned int key_val;
- unsigned short keycodes[];
-};
-
-static irqreturn_t mcs_touchkey_interrupt(int irq, void *dev_id)
-{
- struct mcs_touchkey_data *data = dev_id;
- struct mcs_touchkey_chip *chip = &data->chip;
- struct i2c_client *client = data->client;
- struct input_dev *input = data->input_dev;
- unsigned int key_val;
- unsigned int pressed;
- int val;
-
- val = i2c_smbus_read_byte_data(client, chip->status_reg);
- if (val < 0) {
- dev_err(&client->dev, "i2c read error [%d]\n", val);
- goto out;
- }
-
- pressed = (val & (1 << chip->pressbit)) >> chip->pressbit;
- if (chip->press_invert)
- pressed ^= chip->press_invert;
-
- /* key_val is 0 when released, so we should use key_val of press. */
- if (pressed) {
- key_val = val & (0xff >> (8 - chip->pressbit));
- if (!key_val)
- goto out;
- key_val -= chip->baseval;
- data->key_code = data->keycodes[key_val];
- data->key_val = key_val;
- }
-
- input_event(input, EV_MSC, MSC_SCAN, data->key_val);
- input_report_key(input, data->key_code, pressed);
- input_sync(input);
-
- dev_dbg(&client->dev, "key %d %d %s\n", data->key_val, data->key_code,
- pressed ? "pressed" : "released");
-
- out:
- return IRQ_HANDLED;
-}
-
-static void mcs_touchkey_poweroff(void *data)
-{
- struct mcs_touchkey_data *touchkey = data;
-
- touchkey->poweron(false);
-}
-
-static int mcs_touchkey_probe(struct i2c_client *client)
-{
- const struct i2c_device_id *id = i2c_client_get_device_id(client);
- const struct mcs_platform_data *pdata;
- struct mcs_touchkey_data *data;
- struct input_dev *input_dev;
- unsigned int fw_reg;
- int fw_ver;
- int error;
- int i;
-
- pdata = dev_get_platdata(&client->dev);
- if (!pdata) {
- dev_err(&client->dev, "no platform data defined\n");
- return -EINVAL;
- }
-
- data = devm_kzalloc(&client->dev,
- struct_size(data, keycodes, pdata->key_maxval + 1),
- GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- input_dev = devm_input_allocate_device(&client->dev);
- if (!input_dev) {
- dev_err(&client->dev, "Failed to allocate input device\n");
- return -ENOMEM;
- }
-
- data->client = client;
- data->input_dev = input_dev;
-
- if (id->driver_data == MCS5000_TOUCHKEY) {
- data->chip.status_reg = MCS5000_TOUCHKEY_STATUS;
- data->chip.pressbit = MCS5000_TOUCHKEY_STATUS_PRESS;
- data->chip.baseval = MCS5000_TOUCHKEY_BASE_VAL;
- fw_reg = MCS5000_TOUCHKEY_FW;
- } else {
- data->chip.status_reg = MCS5080_TOUCHKEY_STATUS;
- data->chip.pressbit = MCS5080_TOUCHKEY_STATUS_PRESS;
- data->chip.press_invert = 1;
- data->chip.baseval = MCS5080_TOUCHKEY_BASE_VAL;
- fw_reg = MCS5080_TOUCHKEY_FW;
- }
-
- fw_ver = i2c_smbus_read_byte_data(client, fw_reg);
- if (fw_ver < 0) {
- dev_err(&client->dev, "i2c read error[%d]\n", fw_ver);
- return fw_ver;
- }
- dev_info(&client->dev, "Firmware version: %d\n", fw_ver);
-
- input_dev->name = "MELFAS MCS Touchkey";
- input_dev->id.bustype = BUS_I2C;
- input_dev->evbit[0] = BIT_MASK(EV_KEY);
- if (!pdata->no_autorepeat)
- input_dev->evbit[0] |= BIT_MASK(EV_REP);
- input_dev->keycode = data->keycodes;
- input_dev->keycodesize = sizeof(data->keycodes[0]);
- input_dev->keycodemax = pdata->key_maxval + 1;
-
- for (i = 0; i < pdata->keymap_size; i++) {
- unsigned int val = MCS_KEY_VAL(pdata->keymap[i]);
- unsigned int code = MCS_KEY_CODE(pdata->keymap[i]);
-
- data->keycodes[val] = code;
- __set_bit(code, input_dev->keybit);
- }
-
- input_set_capability(input_dev, EV_MSC, MSC_SCAN);
- input_set_drvdata(input_dev, data);
-
- if (pdata->cfg_pin)
- pdata->cfg_pin();
-
- if (pdata->poweron) {
- data->poweron = pdata->poweron;
- data->poweron(true);
-
- error = devm_add_action_or_reset(&client->dev,
- mcs_touchkey_poweroff, data);
- if (error)
- return error;
- }
-
- error = devm_request_threaded_irq(&client->dev, client->irq,
- NULL, mcs_touchkey_interrupt,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- client->dev.driver->name, data);
- if (error) {
- dev_err(&client->dev, "Failed to register interrupt\n");
- return error;
- }
-
- error = input_register_device(input_dev);
- if (error)
- return error;
-
- i2c_set_clientdata(client, data);
- return 0;
-}
-
-static void mcs_touchkey_shutdown(struct i2c_client *client)
-{
- struct mcs_touchkey_data *data = i2c_get_clientdata(client);
-
- if (data->poweron)
- data->poweron(false);
-}
-
-static int mcs_touchkey_suspend(struct device *dev)
-{
- struct mcs_touchkey_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
-
- /* Disable the work */
- disable_irq(client->irq);
-
- /* Finally turn off the power */
- if (data->poweron)
- data->poweron(false);
-
- return 0;
-}
-
-static int mcs_touchkey_resume(struct device *dev)
-{
- struct mcs_touchkey_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
-
- /* Enable the device first */
- if (data->poweron)
- data->poweron(true);
-
- /* Enable irq again */
- enable_irq(client->irq);
-
- return 0;
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(mcs_touchkey_pm_ops,
- mcs_touchkey_suspend, mcs_touchkey_resume);
-
-static const struct i2c_device_id mcs_touchkey_id[] = {
- { "mcs5000_touchkey", MCS5000_TOUCHKEY },
- { "mcs5080_touchkey", MCS5080_TOUCHKEY },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, mcs_touchkey_id);
-
-static struct i2c_driver mcs_touchkey_driver = {
- .driver = {
- .name = "mcs_touchkey",
- .pm = pm_sleep_ptr(&mcs_touchkey_pm_ops),
- },
- .probe = mcs_touchkey_probe,
- .shutdown = mcs_touchkey_shutdown,
- .id_table = mcs_touchkey_id,
-};
-
-module_i2c_driver(mcs_touchkey_driver);
-
-/* Module information */
-MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
-MODULE_AUTHOR("HeungJun Kim <riverful.kim@samsung.com>");
-MODULE_DESCRIPTION("Touchkey driver for MELFAS MCS5000/5080 controller");
-MODULE_LICENSE("GPL");