Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  Atmel AT42QT1070 QTouch Sensor Controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (C) 2011 Atmel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  Authors: Bo Shen <voice.shen@atmel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *  Base on AT42QT2160 driver by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *  Raphael Derosso Pereira <raphaelpereira@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *  Copyright (C) 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) /* Address for each register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define CHIP_ID            0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define QT1070_CHIP_ID     0x2E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define FW_VERSION         0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define QT1070_FW_VERSION  0x15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define DET_STATUS         0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define KEY_STATUS         0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) /* Calibrate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define CALIBRATE_CMD      0x38
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define QT1070_CAL_TIME    200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) /* Reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define RESET              0x39
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define QT1070_RESET_TIME  255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) /* AT42QT1070 support up to 7 keys */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) static const unsigned short qt1070_key2code[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	KEY_0, KEY_1, KEY_2, KEY_3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	KEY_4, KEY_5, KEY_6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) struct qt1070_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	unsigned int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	unsigned short keycodes[ARRAY_SIZE(qt1070_key2code)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	u8 last_keys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) static int qt1070_read(struct i2c_client *client, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	ret = i2c_smbus_read_byte_data(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			"can not read register, returned %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) static int qt1070_write(struct i2c_client *client, u8 reg, u8 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	ret = i2c_smbus_write_byte_data(client, reg, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 			"can not write register, returned %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) static bool qt1070_identify(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	int id, ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	/* Read Chip ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	id = qt1070_read(client, CHIP_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if (id != QT1070_CHIP_ID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		dev_err(&client->dev, "ID %d not supported\n", id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	/* Read firmware version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	ver = qt1070_read(client, FW_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	if (ver < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		dev_err(&client->dev, "could not read the firmware version\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	dev_info(&client->dev, "AT42QT1070 firmware version %x\n", ver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static irqreturn_t qt1070_interrupt(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	struct qt1070_data *data = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct input_dev *input = data->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	u8 new_keys, keyval, mask = 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	/* Read the detected status register, thus clearing interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	qt1070_read(client, DET_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	/* Read which key changed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	new_keys = qt1070_read(client, KEY_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	for (i = 0; i < ARRAY_SIZE(qt1070_key2code); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		keyval = new_keys & mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		if ((data->last_keys & mask) != keyval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 			input_report_key(input, data->keycodes[i], keyval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		mask <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	input_sync(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	data->last_keys = new_keys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static int qt1070_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 				const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	struct qt1070_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	err = i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (!err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		dev_err(&client->dev, "%s adapter not supported\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			dev_driver_string(&client->adapter->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	if (!client->irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		dev_err(&client->dev, "please assign the irq to this device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	/* Identify the qt1070 chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	if (!qt1070_identify(client))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	data = kzalloc(sizeof(struct qt1070_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	input = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	if (!data || !input) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		dev_err(&client->dev, "insufficient memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		goto err_free_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	data->input = input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	data->irq = client->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	input->name = "AT42QT1070 QTouch Sensor";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	input->dev.parent = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	input->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	/* Add the keycode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	input->keycode = data->keycodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	input->keycodesize = sizeof(data->keycodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	input->keycodemax = ARRAY_SIZE(qt1070_key2code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	__set_bit(EV_KEY, input->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	for (i = 0; i < ARRAY_SIZE(qt1070_key2code); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		data->keycodes[i] = qt1070_key2code[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		__set_bit(qt1070_key2code[i], input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	/* Calibrate device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	qt1070_write(client, CALIBRATE_CMD, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	msleep(QT1070_CAL_TIME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	/* Soft reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	qt1070_write(client, RESET, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	msleep(QT1070_RESET_TIME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	err = request_threaded_irq(client->irq, NULL, qt1070_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 				   IRQF_TRIGGER_NONE | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 				   client->dev.driver->name, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		dev_err(&client->dev, "fail to request irq\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		goto err_free_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	/* Register the input device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	err = input_register_device(data->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		dev_err(&client->dev, "Failed to register input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		goto err_free_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	i2c_set_clientdata(client, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	/* Read to clear the chang line */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	qt1070_read(client, DET_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) err_free_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	free_irq(client->irq, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) err_free_mem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	input_free_device(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	kfree(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static int qt1070_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	struct qt1070_data *data = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	/* Release IRQ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	free_irq(client->irq, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	input_unregister_device(data->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	kfree(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int qt1070_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	struct qt1070_data *data = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		enable_irq_wake(data->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static int qt1070_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	struct qt1070_data *data = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		disable_irq_wake(data->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static SIMPLE_DEV_PM_OPS(qt1070_pm_ops, qt1070_suspend, qt1070_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static const struct i2c_device_id qt1070_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	{ "qt1070", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) MODULE_DEVICE_TABLE(i2c, qt1070_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static const struct of_device_id qt1070_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	{ .compatible = "qt1070", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) MODULE_DEVICE_TABLE(of, qt1070_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) static struct i2c_driver qt1070_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		.name	= "qt1070",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		.of_match_table = of_match_ptr(qt1070_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		.pm	= &qt1070_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	.id_table	= qt1070_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	.probe		= qt1070_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	.remove		= qt1070_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) module_i2c_driver(qt1070_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) MODULE_AUTHOR("Bo Shen <voice.shen@atmel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) MODULE_DESCRIPTION("Driver for AT42QT1070 QTouch sensor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) MODULE_LICENSE("GPL");