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)  * Wacom Penabled Driver for I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2011 - 2013 Tatsunosuke Tobita, Wacom.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * <tobita.tatsunosuke@wacom.co.jp>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #define WACOM_CMD_QUERY0	0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define WACOM_CMD_QUERY1	0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define WACOM_CMD_QUERY2	0x33
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define WACOM_CMD_QUERY3	0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define WACOM_CMD_THROW0	0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define WACOM_CMD_THROW1	0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define WACOM_QUERY_SIZE	19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) struct wacom_features {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	int x_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	int y_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	int pressure_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	char fw_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) struct wacom_i2c {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	u8 data[WACOM_QUERY_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	bool prox;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	int tool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static int wacom_query_device(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 			      struct wacom_features *features)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	u8 cmd1[] = { WACOM_CMD_QUERY0, WACOM_CMD_QUERY1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 			WACOM_CMD_QUERY2, WACOM_CMD_QUERY3 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	u8 cmd2[] = { WACOM_CMD_THROW0, WACOM_CMD_THROW1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	u8 data[WACOM_QUERY_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct i2c_msg msgs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 			.addr = client->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 			.flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 			.len = sizeof(cmd1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 			.buf = cmd1,
^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) 			.addr = client->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 			.flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 			.len = sizeof(cmd2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 			.buf = cmd2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 			.addr = client->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			.flags = I2C_M_RD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 			.len = sizeof(data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 			.buf = data,
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (ret != ARRAY_SIZE(msgs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	features->x_max = get_unaligned_le16(&data[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	features->y_max = get_unaligned_le16(&data[5]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	features->pressure_max = get_unaligned_le16(&data[11]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	features->fw_version = get_unaligned_le16(&data[13]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	dev_dbg(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		"x_max:%d, y_max:%d, pressure:%d, fw:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		features->x_max, features->y_max,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		features->pressure_max, features->fw_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	struct wacom_i2c *wac_i2c = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	struct input_dev *input = wac_i2c->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	u8 *data = wac_i2c->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	unsigned int x, y, pressure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	unsigned char tsw, f1, f2, ers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	error = i2c_master_recv(wac_i2c->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 				wac_i2c->data, sizeof(wac_i2c->data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	tsw = data[3] & 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	ers = data[3] & 0x04;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	f1 = data[3] & 0x02;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	f2 = data[3] & 0x10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	x = le16_to_cpup((__le16 *)&data[4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	y = le16_to_cpup((__le16 *)&data[6]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	pressure = le16_to_cpup((__le16 *)&data[8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	if (!wac_i2c->prox)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		wac_i2c->tool = (data[3] & 0x0c) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 			BTN_TOOL_RUBBER : BTN_TOOL_PEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	wac_i2c->prox = data[3] & 0x20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	input_report_key(input, BTN_TOUCH, tsw || ers);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	input_report_key(input, wac_i2c->tool, wac_i2c->prox);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	input_report_key(input, BTN_STYLUS, f1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	input_report_key(input, BTN_STYLUS2, f2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	input_report_abs(input, ABS_X, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	input_report_abs(input, ABS_Y, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	input_report_abs(input, ABS_PRESSURE, pressure);
^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) out:
^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 wacom_i2c_open(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	struct wacom_i2c *wac_i2c = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	struct i2c_client *client = wac_i2c->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	enable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static void wacom_i2c_close(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	struct wacom_i2c *wac_i2c = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	struct i2c_client *client = wac_i2c->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static int wacom_i2c_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 				     const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	struct wacom_i2c *wac_i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	struct wacom_features features = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		dev_err(&client->dev, "i2c_check_functionality error\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	error = wacom_query_device(client, &features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	wac_i2c = kzalloc(sizeof(*wac_i2c), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	input = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	if (!wac_i2c || !input) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		goto err_free_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	wac_i2c->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	wac_i2c->input = input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	input->name = "Wacom I2C Digitizer";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	input->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	input->id.vendor = 0x56a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	input->id.version = features.fw_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	input->dev.parent = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	input->open = wacom_i2c_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	input->close = wacom_i2c_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	input->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	__set_bit(BTN_TOOL_PEN, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	__set_bit(BTN_TOOL_RUBBER, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	__set_bit(BTN_STYLUS, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	__set_bit(BTN_STYLUS2, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	__set_bit(BTN_TOUCH, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	input_set_abs_params(input, ABS_X, 0, features.x_max, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	input_set_abs_params(input, ABS_Y, 0, features.y_max, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	input_set_abs_params(input, ABS_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 			     0, features.pressure_max, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	input_set_drvdata(input, wac_i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	error = request_threaded_irq(client->irq, NULL, wacom_i2c_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 				     IRQF_TRIGGER_LOW | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 				     "wacom_i2c", wac_i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			"Failed to enable IRQ, error: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		goto err_free_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	/* Disable the IRQ, we'll enable it in wac_i2c_open() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	error = input_register_device(wac_i2c->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			"Failed to register input device, error: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		goto err_free_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	i2c_set_clientdata(client, wac_i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) err_free_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	free_irq(client->irq, wac_i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) err_free_mem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	input_free_device(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	kfree(wac_i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int wacom_i2c_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	struct wacom_i2c *wac_i2c = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	free_irq(client->irq, wac_i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	input_unregister_device(wac_i2c->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	kfree(wac_i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static int __maybe_unused wacom_i2c_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static int __maybe_unused wacom_i2c_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	enable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static SIMPLE_DEV_PM_OPS(wacom_i2c_pm, wacom_i2c_suspend, wacom_i2c_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static const struct i2c_device_id wacom_i2c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	{ "WAC_I2C_EMR", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) MODULE_DEVICE_TABLE(i2c, wacom_i2c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static struct i2c_driver wacom_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		.name	= "wacom_i2c",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		.pm	= &wacom_i2c_pm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	.probe		= wacom_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	.remove		= wacom_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	.id_table	= wacom_i2c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) module_i2c_driver(wacom_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) MODULE_AUTHOR("Tatsunosuke Tobita <tobita.tatsunosuke@wacom.co.jp>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) MODULE_DESCRIPTION("WACOM EMR I2C Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) MODULE_LICENSE("GPL");