^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * max7359_keypad.c - MAX7359 Key Switch Controller Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2009 Samsung Electronics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Kim Kyuwon <q1.kim@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Based on pxa27x_keypad.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Datasheet: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5456
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/input/matrix_keypad.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define MAX7359_MAX_KEY_ROWS 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define MAX7359_MAX_KEY_COLS 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define MAX7359_MAX_KEY_NUM (MAX7359_MAX_KEY_ROWS * MAX7359_MAX_KEY_COLS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MAX7359_ROW_SHIFT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * MAX7359 registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define MAX7359_REG_KEYFIFO 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define MAX7359_REG_CONFIG 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define MAX7359_REG_DEBOUNCE 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define MAX7359_REG_INTERRUPT 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define MAX7359_REG_PORTS 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define MAX7359_REG_KEYREP 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define MAX7359_REG_SLEEP 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * Configuration register bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define MAX7359_CFG_SLEEP (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define MAX7359_CFG_INTERRUPT (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define MAX7359_CFG_KEY_RELEASE (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define MAX7359_CFG_WAKEUP (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define MAX7359_CFG_TIMEOUT (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * Autosleep register values (ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define MAX7359_AUTOSLEEP_8192 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define MAX7359_AUTOSLEEP_4096 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define MAX7359_AUTOSLEEP_2048 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define MAX7359_AUTOSLEEP_1024 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define MAX7359_AUTOSLEEP_512 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define MAX7359_AUTOSLEEP_256 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct max7359_keypad {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* matrix key code map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) unsigned short keycodes[MAX7359_MAX_KEY_NUM];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static int max7359_write_reg(struct i2c_client *client, u8 reg, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int ret = i2c_smbus_write_byte_data(client, reg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) dev_err(&client->dev, "%s: reg 0x%x, val 0x%x, err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) __func__, reg, val, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static int max7359_read_reg(struct i2c_client *client, int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int ret = i2c_smbus_read_byte_data(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) dev_err(&client->dev, "%s: reg 0x%x, err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) __func__, reg, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* runs in an IRQ thread -- can (and will!) sleep */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static irqreturn_t max7359_interrupt(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct max7359_keypad *keypad = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct input_dev *input_dev = keypad->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int val, row, col, release, code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) val = max7359_read_reg(keypad->client, MAX7359_REG_KEYFIFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) row = val & 0x7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) col = (val >> 3) & 0x7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) release = val & 0x40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) code = MATRIX_SCAN_CODE(row, col, MAX7359_ROW_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) dev_dbg(&keypad->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) "key[%d:%d] %s\n", row, col, release ? "release" : "press");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) input_event(input_dev, EV_MSC, MSC_SCAN, code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) input_report_key(input_dev, keypad->keycodes[code], !release);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) input_sync(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * Let MAX7359 fall into a deep sleep:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * If no keys are pressed, enter sleep mode for 8192 ms. And if any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * key is pressed, the MAX7359 returns to normal operating mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static inline void max7359_fall_deepsleep(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) max7359_write_reg(client, MAX7359_REG_SLEEP, MAX7359_AUTOSLEEP_8192);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * Let MAX7359 take a catnap:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * Autosleep just for 256 ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static inline void max7359_take_catnap(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) max7359_write_reg(client, MAX7359_REG_SLEEP, MAX7359_AUTOSLEEP_256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static int max7359_open(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct max7359_keypad *keypad = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) max7359_take_catnap(keypad->client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static void max7359_close(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct max7359_keypad *keypad = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) max7359_fall_deepsleep(keypad->client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static void max7359_initialize(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) max7359_write_reg(client, MAX7359_REG_CONFIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) MAX7359_CFG_KEY_RELEASE | /* Key release enable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) MAX7359_CFG_WAKEUP); /* Key press wakeup enable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /* Full key-scan functionality */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) max7359_write_reg(client, MAX7359_REG_DEBOUNCE, 0x1F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /* nINT asserts every debounce cycles */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) max7359_write_reg(client, MAX7359_REG_INTERRUPT, 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) max7359_fall_deepsleep(client);
^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 max7359_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) const struct matrix_keymap_data *keymap_data =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) dev_get_platdata(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct max7359_keypad *keypad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (!client->irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) dev_err(&client->dev, "The irq number should not be zero\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* Detect MAX7359: The initial Keys FIFO value is '0x3F' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) ret = max7359_read_reg(client, MAX7359_REG_KEYFIFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) dev_err(&client->dev, "failed to detect device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) dev_dbg(&client->dev, "keys FIFO is 0x%02x\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) keypad = devm_kzalloc(&client->dev, sizeof(struct max7359_keypad),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (!keypad) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) dev_err(&client->dev, "failed to allocate memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) input_dev = devm_input_allocate_device(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (!input_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) dev_err(&client->dev, "failed to allocate input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) keypad->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) keypad->input_dev = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) input_dev->name = client->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) input_dev->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) input_dev->open = max7359_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) input_dev->close = max7359_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) input_dev->dev.parent = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) input_dev->keycodesize = sizeof(keypad->keycodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) input_dev->keycodemax = ARRAY_SIZE(keypad->keycodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) input_dev->keycode = keypad->keycodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) input_set_capability(input_dev, EV_MSC, MSC_SCAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) input_set_drvdata(input_dev, keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) error = matrix_keypad_build_keymap(keymap_data, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) MAX7359_MAX_KEY_ROWS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) MAX7359_MAX_KEY_COLS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) keypad->keycodes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) dev_err(&client->dev, "failed to build keymap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) error = devm_request_threaded_irq(&client->dev, client->irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) max7359_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) IRQF_TRIGGER_LOW | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) client->name, keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) dev_err(&client->dev, "failed to register interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /* Register the input device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) error = input_register_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) dev_err(&client->dev, "failed to register input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /* Initialize MAX7359 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) max7359_initialize(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) device_init_wakeup(&client->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return 0;
^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) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static int max7359_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) max7359_fall_deepsleep(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (device_may_wakeup(&client->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) enable_irq_wake(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static int max7359_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (device_may_wakeup(&client->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) disable_irq_wake(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /* Restore the default setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) max7359_take_catnap(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static SIMPLE_DEV_PM_OPS(max7359_pm, max7359_suspend, max7359_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static const struct i2c_device_id max7359_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) { "max7359", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) MODULE_DEVICE_TABLE(i2c, max7359_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static struct i2c_driver max7359_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .name = "max7359",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) .pm = &max7359_pm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) .probe = max7359_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) .id_table = max7359_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) module_i2c_driver(max7359_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) MODULE_AUTHOR("Kim Kyuwon <q1.kim@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) MODULE_DESCRIPTION("MAX7359 Key Switch Controller Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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