^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) * qt2160.c - Atmel AT42QT2160 Touch Sense Controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2009 Raphael Derosso Pereira <raphaelpereira@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/interrupt.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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define QT2160_VALID_CHIPID 0x11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define QT2160_CMD_CHIPID 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define QT2160_CMD_CODEVER 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define QT2160_CMD_GSTAT 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define QT2160_CMD_KEYS3 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define QT2160_CMD_KEYS4 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define QT2160_CMD_SLIDE 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define QT2160_CMD_GPIOS 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define QT2160_CMD_SUBVER 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define QT2160_CMD_CALIBRATE 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define QT2160_CMD_DRIVE_X 70
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define QT2160_CMD_PWMEN_X 74
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define QT2160_CMD_PWM_DUTY 76
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define QT2160_NUM_LEDS_X 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define QT2160_CYCLE_INTERVAL (2*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static unsigned char qt2160_key2code[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) KEY_0, KEY_1, KEY_2, KEY_3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) KEY_4, KEY_5, KEY_6, KEY_7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) KEY_8, KEY_9, KEY_A, KEY_B,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) KEY_C, KEY_D, KEY_E, KEY_F,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #ifdef CONFIG_LEDS_CLASS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct qt2160_led {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct qt2160_data *qt2160;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct led_classdev cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) char name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) enum led_brightness brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct qt2160_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct delayed_work dwork;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) unsigned short keycodes[ARRAY_SIZE(qt2160_key2code)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) u16 key_matrix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #ifdef CONFIG_LEDS_CLASS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct qt2160_led leds[QT2160_NUM_LEDS_X];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static int qt2160_read(struct i2c_client *client, u8 reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int qt2160_write(struct i2c_client *client, u8 reg, u8 data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #ifdef CONFIG_LEDS_CLASS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static int qt2160_led_set(struct led_classdev *cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct qt2160_led *led = container_of(cdev, struct qt2160_led, cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct qt2160_data *qt2160 = led->qt2160;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct i2c_client *client = qt2160->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u32 drive, pwmen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (value != led->brightness) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) drive = qt2160_read(client, QT2160_CMD_DRIVE_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) pwmen = qt2160_read(client, QT2160_CMD_PWMEN_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (value != LED_OFF) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) drive |= BIT(led->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) pwmen |= BIT(led->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) drive &= ~BIT(led->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) pwmen &= ~BIT(led->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) qt2160_write(client, QT2160_CMD_DRIVE_X, drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) qt2160_write(client, QT2160_CMD_PWMEN_X, pwmen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * Changing this register will change the brightness
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * of every LED in the qt2160. It's a HW limitation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (value != LED_OFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) qt2160_write(client, QT2160_CMD_PWM_DUTY, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) led->brightness = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #endif /* CONFIG_LEDS_CLASS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static int qt2160_read_block(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u8 inireg, u8 *buffer, unsigned int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int error, idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * Can't use SMBus block data read. Check for I2C functionality to speed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * things up whenever possible. Otherwise we will be forced to read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * sequentially.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) error = i2c_smbus_write_byte(client, inireg + idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) "couldn't send request. Returned %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) error = i2c_master_recv(client, buffer, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (error != count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) "couldn't read registers. Returned %d bytes\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) while (count--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) error = i2c_smbus_write_byte(client, inireg + idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) "couldn't send request. Returned %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return error;
^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) data = i2c_smbus_read_byte(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (data < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) "couldn't read register. Returned %d\n", data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) buffer[idx++] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static int qt2160_get_key_matrix(struct qt2160_data *qt2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct i2c_client *client = qt2160->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct input_dev *input = qt2160->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) u8 regs[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) u16 old_matrix, new_matrix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) int ret, i, mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) dev_dbg(&client->dev, "requesting keys...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * Read all registers from General Status Register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * to GPIOs register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) ret = qt2160_read_block(client, QT2160_CMD_GSTAT, regs, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) "could not perform chip read.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) old_matrix = qt2160->key_matrix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) qt2160->key_matrix = new_matrix = (regs[2] << 8) | regs[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) mask = 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) for (i = 0; i < 16; ++i, mask <<= 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) int keyval = new_matrix & mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if ((old_matrix & mask) != keyval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) input_report_key(input, qt2160->keycodes[i], keyval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) dev_dbg(&client->dev, "key %d %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) i, keyval ? "pressed" : "released");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) input_sync(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static irqreturn_t qt2160_irq(int irq, void *_qt2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct qt2160_data *qt2160 = _qt2160;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) mod_delayed_work(system_wq, &qt2160->dwork, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static void qt2160_schedule_read(struct qt2160_data *qt2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) schedule_delayed_work(&qt2160->dwork, QT2160_CYCLE_INTERVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static void qt2160_worker(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct qt2160_data *qt2160 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) container_of(work, struct qt2160_data, dwork.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) dev_dbg(&qt2160->client->dev, "worker\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) qt2160_get_key_matrix(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /* Avoid device lock up by checking every so often */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) qt2160_schedule_read(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int qt2160_read(struct i2c_client *client, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ret = i2c_smbus_write_byte(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) "couldn't send request. Returned %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ret = i2c_smbus_read_byte(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) "couldn't read register. Returned %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int qt2160_write(struct i2c_client *client, u8 reg, u8 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) ret = i2c_smbus_write_byte_data(client, reg, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) "couldn't write data. Returned %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) #ifdef CONFIG_LEDS_CLASS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static int qt2160_register_leds(struct qt2160_data *qt2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct i2c_client *client = qt2160->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) for (i = 0; i < QT2160_NUM_LEDS_X; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct qt2160_led *led = &qt2160->leds[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) snprintf(led->name, sizeof(led->name), "qt2160:x%d", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) led->cdev.name = led->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) led->cdev.brightness_set_blocking = qt2160_led_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) led->cdev.brightness = LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) led->id = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) led->qt2160 = qt2160;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ret = led_classdev_register(&client->dev, &led->cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /* Tur off LEDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) qt2160_write(client, QT2160_CMD_DRIVE_X, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) qt2160_write(client, QT2160_CMD_PWMEN_X, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) qt2160_write(client, QT2160_CMD_PWM_DUTY, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static void qt2160_unregister_leds(struct qt2160_data *qt2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) for (i = 0; i < QT2160_NUM_LEDS_X; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) led_classdev_unregister(&qt2160->leds[i].cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static inline int qt2160_register_leds(struct qt2160_data *qt2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static inline void qt2160_unregister_leds(struct qt2160_data *qt2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static bool qt2160_identify(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) int id, ver, rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* Read Chid ID to check if chip is valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) id = qt2160_read(client, QT2160_CMD_CHIPID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (id != QT2160_VALID_CHIPID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) dev_err(&client->dev, "ID %d not supported\n", id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) /* Read chip firmware version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) ver = qt2160_read(client, QT2160_CMD_CODEVER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (ver < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) dev_err(&client->dev, "could not get firmware version\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /* Read chip firmware revision */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) rev = qt2160_read(client, QT2160_CMD_SUBVER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (rev < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) dev_err(&client->dev, "could not get firmware revision\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) dev_info(&client->dev, "AT42QT2160 firmware version %d.%d.%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) ver >> 4, ver & 0xf, rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static int qt2160_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct qt2160_data *qt2160;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /* Check functionality */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) error = i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) I2C_FUNC_SMBUS_BYTE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (!error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) dev_err(&client->dev, "%s adapter not supported\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) dev_driver_string(&client->adapter->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (!qt2160_identify(client))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) /* Chip is valid and active. Allocate structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) qt2160 = kzalloc(sizeof(struct qt2160_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) input = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (!qt2160 || !input) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) dev_err(&client->dev, "insufficient memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) goto err_free_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) qt2160->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) qt2160->input = input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) INIT_DELAYED_WORK(&qt2160->dwork, qt2160_worker);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) input->name = "AT42QT2160 Touch Sense Keyboard";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) input->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) input->keycode = qt2160->keycodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) input->keycodesize = sizeof(qt2160->keycodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) input->keycodemax = ARRAY_SIZE(qt2160_key2code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) __set_bit(EV_KEY, input->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) __clear_bit(EV_REP, input->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) for (i = 0; i < ARRAY_SIZE(qt2160_key2code); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) qt2160->keycodes[i] = qt2160_key2code[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) __set_bit(qt2160_key2code[i], input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) __clear_bit(KEY_RESERVED, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) /* Calibrate device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) error = qt2160_write(client, QT2160_CMD_CALIBRATE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) dev_err(&client->dev, "failed to calibrate device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) goto err_free_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (client->irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) error = request_irq(client->irq, qt2160_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) IRQF_TRIGGER_FALLING, "qt2160", qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) "failed to allocate irq %d\n", client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) goto err_free_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) error = qt2160_register_leds(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) dev_err(&client->dev, "Failed to register leds\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) goto err_free_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) error = input_register_device(qt2160->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) "Failed to register input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) goto err_unregister_leds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) i2c_set_clientdata(client, qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) qt2160_schedule_read(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) err_unregister_leds:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) qt2160_unregister_leds(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) err_free_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (client->irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) free_irq(client->irq, qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) err_free_mem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) input_free_device(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) kfree(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static int qt2160_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) struct qt2160_data *qt2160 = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) qt2160_unregister_leds(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /* Release IRQ so no queue will be scheduled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (client->irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) free_irq(client->irq, qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) cancel_delayed_work_sync(&qt2160->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) input_unregister_device(qt2160->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) kfree(qt2160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) static const struct i2c_device_id qt2160_idtable[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) { "qt2160", 0, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) MODULE_DEVICE_TABLE(i2c, qt2160_idtable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) static struct i2c_driver qt2160_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) .name = "qt2160",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) .id_table = qt2160_idtable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) .probe = qt2160_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) .remove = qt2160_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) module_i2c_driver(qt2160_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) MODULE_AUTHOR("Raphael Derosso Pereira <raphaelpereira@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) MODULE_DESCRIPTION("Driver for AT42QT2160 Touch Sensor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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