^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for ChipOne icn8505 i2c touchscreen controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2015-2018 Red Hat Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Red Hat authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Hans de Goede <hdegoede@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/crc32.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/firmware.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/i2c.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/mt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/input/touchscreen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* Normal operation mode defines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define ICN8505_REG_ADDR_WIDTH 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define ICN8505_REG_POWER 0x0004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define ICN8505_REG_TOUCHDATA 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define ICN8505_REG_CONFIGDATA 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* ICN8505_REG_POWER commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define ICN8505_POWER_ACTIVE 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define ICN8505_POWER_MONITOR 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define ICN8505_POWER_HIBERNATE 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * The Android driver uses these to turn on/off the charger filter, but the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * filter is way too aggressive making e.g. onscreen keyboards unusable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ICN8505_POWER_ENA_CHARGER_MODE 0x55
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define ICN8505_POWER_DIS_CHARGER_MODE 0x66
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define ICN8505_MAX_TOUCHES 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* Programming mode defines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define ICN8505_PROG_I2C_ADDR 0x30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define ICN8505_PROG_REG_ADDR_WIDTH 24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define MAX_FW_UPLOAD_TRIES 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct icn8505_touch {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) u8 slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u8 x[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u8 y[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) u8 pressure; /* Seems more like finger width then pressure really */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u8 event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* The difference between 2 and 3 is unclear */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define ICN8505_EVENT_NO_DATA 1 /* No finger seen yet since wakeup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define ICN8505_EVENT_UPDATE1 2 /* New or updated coordinates */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define ICN8505_EVENT_UPDATE2 3 /* New or updated coordinates */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define ICN8505_EVENT_END 4 /* Finger lifted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct icn8505_touch_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u8 softbutton;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u8 touch_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct icn8505_touch touches[ICN8505_MAX_TOUCHES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct icn8505_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct gpio_desc *wake_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct touchscreen_properties prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) char firmware_name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static int icn8505_read_xfer(struct i2c_client *client, u16 i2c_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) int reg_addr, int reg_addr_width,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) void *data, int len, bool silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) u8 buf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct i2c_msg msg[2] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .addr = i2c_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .buf = buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .len = reg_addr_width / 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .addr = i2c_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .flags = I2C_M_RD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .buf = data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .len = len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) for (i = 0; i < (reg_addr_width / 8); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) buf[i] = (reg_addr >> (reg_addr_width - (i + 1) * 8)) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ret = i2c_transfer(client->adapter, msg, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (ret != ARRAY_SIZE(msg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (ret >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (!silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) "Error reading addr %#x reg %#x: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) i2c_addr, reg_addr, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 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) static int icn8505_write_xfer(struct i2c_client *client, u16 i2c_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int reg_addr, int reg_addr_width,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) const void *data, int len, bool silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) u8 buf[3 + 32]; /* 3 bytes for 24 bit reg-addr + 32 bytes max len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct i2c_msg msg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .addr = i2c_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .buf = buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .len = reg_addr_width / 8 + len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (WARN_ON(len > 32))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) for (i = 0; i < (reg_addr_width / 8); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) buf[i] = (reg_addr >> (reg_addr_width - (i + 1) * 8)) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) memcpy(buf + reg_addr_width / 8, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) ret = i2c_transfer(client->adapter, &msg, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (ret != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (ret >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (!silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) "Error writing addr %#x reg %#x: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) i2c_addr, reg_addr, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return ret;
^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) return 0;
^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 icn8505_read_data(struct icn8505_data *icn8505, int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) void *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return icn8505_read_xfer(icn8505->client, icn8505->client->addr, reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) ICN8505_REG_ADDR_WIDTH, buf, len, false);
^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) static int icn8505_read_reg_silent(struct icn8505_data *icn8505, int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) u8 buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) error = icn8505_read_xfer(icn8505->client, icn8505->client->addr, reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) ICN8505_REG_ADDR_WIDTH, &buf, 1, true);
^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) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static int icn8505_write_reg(struct icn8505_data *icn8505, int reg, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return icn8505_write_xfer(icn8505->client, icn8505->client->addr, reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) ICN8505_REG_ADDR_WIDTH, &val, 1, false);
^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) static int icn8505_read_prog_data(struct icn8505_data *icn8505, int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) void *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return icn8505_read_xfer(icn8505->client, ICN8505_PROG_I2C_ADDR, reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ICN8505_PROG_REG_ADDR_WIDTH, buf, len, false);
^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) static int icn8505_write_prog_data(struct icn8505_data *icn8505, int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) const void *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return icn8505_write_xfer(icn8505->client, ICN8505_PROG_I2C_ADDR, reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) ICN8505_PROG_REG_ADDR_WIDTH, buf, len, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static int icn8505_write_prog_reg(struct icn8505_data *icn8505, int reg, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return icn8505_write_xfer(icn8505->client, ICN8505_PROG_I2C_ADDR, reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) ICN8505_PROG_REG_ADDR_WIDTH, &val, 1, false);
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * Note this function uses a number of magic register addresses and values,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * there are deliberately no defines for these because the algorithm is taken
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * from the icn85xx Android driver and I do not want to make up possibly wrong
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * names for the addresses and/or values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static int icn8505_try_fw_upload(struct icn8505_data *icn8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) const struct firmware *fw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct device *dev = &icn8505->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) size_t offset, count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) u8 buf[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) u32 crc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /* Put the controller in programming mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) error = icn8505_write_prog_reg(icn8505, 0xcc3355, 0x5a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) usleep_range(2000, 5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) error = icn8505_write_prog_reg(icn8505, 0x040400, 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) usleep_range(2000, 5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) error = icn8505_read_prog_data(icn8505, 0x040002, buf, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (buf[0] != 0x85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) dev_err(dev, "Failed to enter programming mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) usleep_range(1000, 5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /* Enable CRC mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) error = icn8505_write_prog_reg(icn8505, 0x40028, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (error)
^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) /* Send the firmware to SRAM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) for (offset = 0; offset < fw->size; offset += count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) count = min_t(size_t, fw->size - offset, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) error = icn8505_write_prog_data(icn8505, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) fw->data + offset, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return error;
^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) /* Disable CRC mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) error = icn8505_write_prog_reg(icn8505, 0x40028, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) /* Get and check length and CRC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) error = icn8505_read_prog_data(icn8505, 0x40034, buf, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (get_unaligned_le16(buf) != fw->size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) dev_warn(dev, "Length mismatch after uploading fw\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) error = icn8505_read_prog_data(icn8505, 0x4002c, buf, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) crc = crc32_be(0, fw->data, fw->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (get_unaligned_le32(buf) != crc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) dev_warn(dev, "CRC mismatch after uploading fw\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return -EIO;
^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) /* Boot controller from SRAM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) error = icn8505_write_prog_reg(icn8505, 0x40400, 0x03);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) usleep_range(2000, 5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static int icn8505_upload_fw(struct icn8505_data *icn8505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) struct device *dev = &icn8505->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) const struct firmware *fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) int i, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * Always load the firmware, even if we don't need it at boot, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * we may need it at resume. Having loaded it once will make the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * firmware class code cache it at suspend/resume.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) error = firmware_request_platform(&fw, icn8505->firmware_name, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) dev_err(dev, "Firmware request error %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return error;
^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) /* Check if the controller is not already up and running */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (icn8505_read_reg_silent(icn8505, 0x000a) == 0x85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) goto success;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) for (i = 1; i <= MAX_FW_UPLOAD_TRIES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) error = icn8505_try_fw_upload(icn8505, fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) goto success;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) dev_err(dev, "Failed to upload firmware: %d (attempt %d/%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) error, i, MAX_FW_UPLOAD_TRIES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) usleep_range(2000, 5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) success:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) release_firmware(fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static bool icn8505_touch_active(u8 event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) return event == ICN8505_EVENT_UPDATE1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) event == ICN8505_EVENT_UPDATE2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static irqreturn_t icn8505_irq(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct icn8505_data *icn8505 = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) struct device *dev = &icn8505->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) struct icn8505_touch_data touch_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) int i, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) error = icn8505_read_data(icn8505, ICN8505_REG_TOUCHDATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) &touch_data, sizeof(touch_data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) dev_err(dev, "Error reading touch data: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (touch_data.touch_count > ICN8505_MAX_TOUCHES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) dev_warn(dev, "Too many touches %d > %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) touch_data.touch_count, ICN8505_MAX_TOUCHES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) touch_data.touch_count = ICN8505_MAX_TOUCHES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) for (i = 0; i < touch_data.touch_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct icn8505_touch *touch = &touch_data.touches[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) bool act = icn8505_touch_active(touch->event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) input_mt_slot(icn8505->input, touch->slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) input_mt_report_slot_state(icn8505->input, MT_TOOL_FINGER, act);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (!act)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) touchscreen_report_pos(icn8505->input, &icn8505->prop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) get_unaligned_le16(touch->x),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) get_unaligned_le16(touch->y),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) input_mt_sync_frame(icn8505->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) input_report_key(icn8505->input, KEY_LEFTMETA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) touch_data.softbutton == 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) input_sync(icn8505->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) static int icn8505_probe_acpi(struct icn8505_data *icn8505, struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) const char *subsys = "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct acpi_device *adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) adev = ACPI_COMPANION(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (!adev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) status = acpi_evaluate_object(adev->handle, "_SUB", NULL, &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (ACPI_SUCCESS(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) obj = buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (obj->type == ACPI_TYPE_STRING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) subsys = obj->string.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) dev_warn(dev, "Warning ACPI _SUB did not return a string\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) dev_warn(dev, "Warning ACPI _SUB failed: %#x\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) buffer.pointer = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) snprintf(icn8505->firmware_name, sizeof(icn8505->firmware_name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) "chipone/icn8505-%s.fw", subsys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) kfree(buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return 0;
^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) static int icn8505_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct icn8505_data *icn8505;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) __le16 resolution[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if (!client->irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) dev_err(dev, "No irq specified\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) icn8505 = devm_kzalloc(dev, sizeof(*icn8505), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (!icn8505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) input = devm_input_allocate_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (!input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) input->name = client->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) input->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) input_set_capability(input, EV_ABS, ABS_MT_POSITION_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) input_set_capability(input, EV_KEY, KEY_LEFTMETA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) icn8505->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) icn8505->input = input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) input_set_drvdata(input, icn8505);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) error = icn8505_probe_acpi(icn8505, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) error = icn8505_upload_fw(icn8505);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) error = icn8505_read_data(icn8505, ICN8505_REG_CONFIGDATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) resolution, sizeof(resolution));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) dev_err(dev, "Error reading resolution: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) input_set_abs_params(input, ABS_MT_POSITION_X, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) le16_to_cpu(resolution[0]) - 1, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) le16_to_cpu(resolution[1]) - 1, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) touchscreen_parse_properties(input, true, &icn8505->prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (!input_abs_get_max(input, ABS_MT_POSITION_X) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) !input_abs_get_max(input, ABS_MT_POSITION_Y)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) dev_err(dev, "Error touchscreen-size-x and/or -y missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) error = input_mt_init_slots(input, ICN8505_MAX_TOUCHES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) error = devm_request_threaded_irq(dev, client->irq, NULL, icn8505_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) IRQF_ONESHOT, client->name, icn8505);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) dev_err(dev, "Error requesting irq: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) error = input_register_device(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) i2c_set_clientdata(client, icn8505);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) static int __maybe_unused icn8505_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) struct icn8505_data *icn8505 = i2c_get_clientdata(to_i2c_client(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) disable_irq(icn8505->client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) icn8505_write_reg(icn8505, ICN8505_REG_POWER, ICN8505_POWER_HIBERNATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) static int __maybe_unused icn8505_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) struct icn8505_data *icn8505 = i2c_get_clientdata(to_i2c_client(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) error = icn8505_upload_fw(icn8505);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) enable_irq(icn8505->client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) static SIMPLE_DEV_PM_OPS(icn8505_pm_ops, icn8505_suspend, icn8505_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) static const struct acpi_device_id icn8505_acpi_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) { "CHPN0001" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) MODULE_DEVICE_TABLE(acpi, icn8505_acpi_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) static struct i2c_driver icn8505_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) .name = "chipone_icn8505",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) .pm = &icn8505_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) .acpi_match_table = icn8505_acpi_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) .probe_new = icn8505_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) module_i2c_driver(icn8505_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) MODULE_DESCRIPTION("ChipOne icn8505 I2C Touchscreen Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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