^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) * Fujitsu Lifebook Application Panel button drive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2007 Stephen Hemminger <shemminger@linux-foundation.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2001-2003 Jochen Eisinger <jochen@penguin-breeder.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Many Fujitsu Lifebook laptops have a small panel of buttons that are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * accessible via the i2c/smbus interface. This driver polls those
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * buttons and generates input events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * For more details see:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * http://apanel.sourceforge.net/tech.php
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define APANEL_NAME "Fujitsu Application Panel"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define APANEL "apanel"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* How often we poll keys - msecs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define POLL_INTERVAL_DEFAULT 1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Magic constants in BIOS that tell about buttons */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) enum apanel_devid {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) APANEL_DEV_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) APANEL_DEV_APPBTN = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) APANEL_DEV_CDBTN = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) APANEL_DEV_LCD = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) APANEL_DEV_LED = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) APANEL_DEV_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) enum apanel_chip {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) CHIP_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) CHIP_OZ992C = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) CHIP_OZ163T = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) CHIP_OZ711M3 = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Result of BIOS snooping/probing -- what features are supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static enum apanel_chip device_chip[APANEL_DEV_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define MAX_PANEL_KEYS 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct apanel {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned short keymap[MAX_PANEL_KEYS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u16 nkeys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct led_classdev mail_led;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static const unsigned short apanel_keymap[MAX_PANEL_KEYS] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) [0] = KEY_MAIL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) [1] = KEY_WWW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) [2] = KEY_PROG2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) [3] = KEY_PROG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) [8] = KEY_FORWARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) [9] = KEY_REWIND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) [10] = KEY_STOPCD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) [11] = KEY_PLAYPAUSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static void report_key(struct input_dev *input, unsigned keycode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) dev_dbg(input->dev.parent, "report key %#x\n", keycode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) input_report_key(input, keycode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) input_sync(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) input_report_key(input, keycode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) input_sync(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Poll for key changes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * Read Application keys via SMI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * A (0x4), B (0x8), Internet (0x2), Email (0x1).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * CD keys:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Forward (0x100), Rewind (0x200), Stop (0x400), Pause (0x800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static void apanel_poll(struct input_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct apanel *ap = input_get_drvdata(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) u8 cmd = device_chip[APANEL_DEV_APPBTN] == CHIP_OZ992C ? 0 : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) s32 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) data = i2c_smbus_read_word_data(ap->client, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (data < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return; /* ignore errors (due to ACPI??) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /* write back to clear latch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) i2c_smbus_write_word_data(ap->client, cmd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) dev_dbg(&idev->dev, APANEL ": data %#x\n", data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) for (i = 0; i < idev->keycodemax; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if ((1u << i) & data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) report_key(idev, ap->keymap[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static int mail_led_set(struct led_classdev *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct apanel *ap = container_of(led, struct apanel, mail_led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) u16 led_bits = value != LED_OFF ? 0x8000 : 0x0000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return i2c_smbus_write_word_data(ap->client, 0x10, led_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static int apanel_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct apanel *ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) u8 cmd = device_chip[APANEL_DEV_APPBTN] == CHIP_OZ992C ? 0 : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) ap = devm_kzalloc(&client->dev, sizeof(*ap), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (!ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) idev = devm_input_allocate_device(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ap->idev = idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) ap->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) i2c_set_clientdata(client, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) err = i2c_smbus_write_word_data(client, cmd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) dev_warn(&client->dev, "smbus write error %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) input_set_drvdata(idev, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) idev->name = APANEL_NAME " buttons";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) idev->phys = "apanel/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) idev->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) memcpy(ap->keymap, apanel_keymap, sizeof(apanel_keymap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) idev->keycode = ap->keymap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) idev->keycodesize = sizeof(ap->keymap[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) idev->keycodemax = (device_chip[APANEL_DEV_CDBTN] != CHIP_NONE) ? 12 : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) set_bit(EV_KEY, idev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) for (i = 0; i < idev->keycodemax; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (ap->keymap[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) set_bit(ap->keymap[i], idev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) err = input_setup_polling(idev, apanel_poll);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) input_set_poll_interval(idev, POLL_INTERVAL_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) err = input_register_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (device_chip[APANEL_DEV_LED] != CHIP_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ap->mail_led.name = "mail:blue";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) ap->mail_led.brightness_set_blocking = mail_led_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) err = devm_led_classdev_register(&client->dev, &ap->mail_led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) return 0;
^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 void apanel_shutdown(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct apanel *ap = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (device_chip[APANEL_DEV_LED] != CHIP_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) led_set_brightness(&ap->mail_led, LED_OFF);
^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) static const struct i2c_device_id apanel_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) { "fujitsu_apanel", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) MODULE_DEVICE_TABLE(i2c, apanel_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static struct i2c_driver apanel_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) .name = APANEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) .probe = apanel_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) .shutdown = apanel_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) .id_table = apanel_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /* Scan the system ROM for the signature "FJKEYINF" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static __init const void __iomem *bios_signature(const void __iomem *bios)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) ssize_t offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) const unsigned char signature[] = "FJKEYINF";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) for (offset = 0; offset < 0x10000; offset += 0x10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (check_signature(bios + offset, signature,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) sizeof(signature)-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return bios + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) pr_notice(APANEL ": Fujitsu BIOS signature '%s' not found...\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) signature);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int __init apanel_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) void __iomem *bios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) const void __iomem *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) u8 devno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) unsigned char i2c_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) int found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) bios = ioremap(0xF0000, 0x10000); /* Can't fail */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) p = bios_signature(bios);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (!p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) iounmap(bios);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /* just use the first address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) p += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) i2c_addr = readb(p + 3) >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) for ( ; (devno = readb(p)) & 0x7f; p += 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) unsigned char method, slave, chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) method = readb(p + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) chip = readb(p + 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) slave = readb(p + 3) >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (slave != i2c_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) pr_notice(APANEL ": only one SMBus slave "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) "address supported, skipping device...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) continue;
^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) /* translate alternative device numbers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) switch (devno) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) case 6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) devno = APANEL_DEV_APPBTN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) case 7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) devno = APANEL_DEV_LED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (devno >= APANEL_DEV_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) pr_notice(APANEL ": unknown device %u found\n", devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) else if (device_chip[devno] != CHIP_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) pr_warn(APANEL ": duplicate entry for devno %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) else if (method != 1 && method != 2 && method != 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) pr_notice(APANEL ": unknown method %u for devno %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) method, devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) device_chip[devno] = (enum apanel_chip) chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) ++found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) iounmap(bios);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (found == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) pr_info(APANEL ": no input devices reported by BIOS\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return -EIO;
^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) return i2c_add_driver(&apanel_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) module_init(apanel_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static void __exit apanel_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) i2c_del_driver(&apanel_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) module_exit(apanel_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) MODULE_DESCRIPTION(APANEL_NAME " driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) MODULE_ALIAS("dmi:*:svnFUJITSU:pnLifeBook*:pvr*:rvnFUJITSU:*");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) MODULE_ALIAS("dmi:*:svnFUJITSU:pnLifebook*:pvr*:rvnFUJITSU:*");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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