| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Stephen Hemminger | 1062 | 83.03% | 1 | 9.09% |
| Dmitry Torokhov | 175 | 13.68% | 2 | 18.18% |
| Jean Delvare | 33 | 2.58% | 1 | 9.09% |
| Greg Kroah-Hartman | 2 | 0.16% | 1 | 9.09% |
| Thomas Gleixner | 2 | 0.16% | 1 | 9.09% |
| Uwe Kleine-König | 1 | 0.08% | 1 | 9.09% |
| Matthieu CASTET | 1 | 0.08% | 1 | 9.09% |
| Márton Németh | 1 | 0.08% | 1 | 9.09% |
| Joe Perches | 1 | 0.08% | 1 | 9.09% |
| Colin Ian King | 1 | 0.08% | 1 | 9.09% |
| Total | 1279 | 11 |
// SPDX-License-Identifier: GPL-2.0-only /* * Fujitsu Lifebook Application Panel button drive * * Copyright (C) 2007 Stephen Hemminger <shemminger@linux-foundation.org> * Copyright (C) 2001-2003 Jochen Eisinger <jochen@penguin-breeder.org> * * Many Fujitsu Lifebook laptops have a small panel of buttons that are * accessible via the i2c/smbus interface. This driver polls those * buttons and generates input events. * * For more details see: * http://apanel.sourceforge.net/tech.php */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/ioport.h> #include <linux/io.h> #include <linux/input.h> #include <linux/i2c.h> #include <linux/leds.h> #define APANEL_NAME "Fujitsu Application Panel" #define APANEL "apanel" /* How often we poll keys - msecs */ #define POLL_INTERVAL_DEFAULT 1000 /* Magic constants in BIOS that tell about buttons */ enum apanel_devid { APANEL_DEV_NONE = 0, APANEL_DEV_APPBTN = 1, APANEL_DEV_CDBTN = 2, APANEL_DEV_LCD = 3, APANEL_DEV_LED = 4, APANEL_DEV_MAX, }; enum apanel_chip { CHIP_NONE = 0, CHIP_OZ992C = 1, CHIP_OZ163T = 2, CHIP_OZ711M3 = 4, }; /* Result of BIOS snooping/probing -- what features are supported */ static enum apanel_chip device_chip[APANEL_DEV_MAX]; #define MAX_PANEL_KEYS 12 struct apanel { struct input_dev *idev; struct i2c_client *client; unsigned short keymap[MAX_PANEL_KEYS]; u16 nkeys; struct led_classdev mail_led; }; static const unsigned short apanel_keymap[MAX_PANEL_KEYS] = { [0] = KEY_MAIL, [1] = KEY_WWW, [2] = KEY_PROG2, [3] = KEY_PROG1, [8] = KEY_FORWARD, [9] = KEY_REWIND, [10] = KEY_STOPCD, [11] = KEY_PLAYPAUSE, }; static void report_key(struct input_dev *input, unsigned keycode) { dev_dbg(input->dev.parent, "report key %#x\n", keycode); input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); input_sync(input); } /* Poll for key changes * * Read Application keys via SMI * A (0x4), B (0x8), Internet (0x2), Email (0x1). * * CD keys: * Forward (0x100), Rewind (0x200), Stop (0x400), Pause (0x800) */ static void apanel_poll(struct input_dev *idev) { struct apanel *ap = input_get_drvdata(idev); u8 cmd = device_chip[APANEL_DEV_APPBTN] == CHIP_OZ992C ? 0 : 8; s32 data; int i; data = i2c_smbus_read_word_data(ap->client, cmd); if (data < 0) return; /* ignore errors (due to ACPI??) */ /* write back to clear latch */ i2c_smbus_write_word_data(ap->client, cmd, 0); if (!data) return; dev_dbg(&idev->dev, APANEL ": data %#x\n", data); for (i = 0; i < idev->keycodemax; i++) if ((1u << i) & data) report_key(idev, ap->keymap[i]); } static int mail_led_set(struct led_classdev *led, enum led_brightness value) { struct apanel *ap = container_of(led, struct apanel, mail_led); u16 led_bits = value != LED_OFF ? 0x8000 : 0x0000; return i2c_smbus_write_word_data(ap->client, 0x10, led_bits); } static int apanel_probe(struct i2c_client *client) { struct apanel *ap; struct input_dev *idev; u8 cmd = device_chip[APANEL_DEV_APPBTN] == CHIP_OZ992C ? 0 : 8; int i, err; ap = devm_kzalloc(&client->dev, sizeof(*ap), GFP_KERNEL); if (!ap) return -ENOMEM; idev = devm_input_allocate_device(&client->dev); if (!idev) return -ENOMEM; ap->idev = idev; ap->client = client; i2c_set_clientdata(client, ap); err = i2c_smbus_write_word_data(client, cmd, 0); if (err) { dev_warn(&client->dev, "smbus write error %d\n", err); return err; } input_set_drvdata(idev, ap); idev->name = APANEL_NAME " buttons"; idev->phys = "apanel/input0"; idev->id.bustype = BUS_HOST; memcpy(ap->keymap, apanel_keymap, sizeof(apanel_keymap)); idev->keycode = ap->keymap; idev->keycodesize = sizeof(ap->keymap[0]); idev->keycodemax = (device_chip[APANEL_DEV_CDBTN] != CHIP_NONE) ? 12 : 4; set_bit(EV_KEY, idev->evbit); for (i = 0; i < idev->keycodemax; i++) if (ap->keymap[i]) set_bit(ap->keymap[i], idev->keybit); err = input_setup_polling(idev, apanel_poll); if (err) return err; input_set_poll_interval(idev, POLL_INTERVAL_DEFAULT); err = input_register_device(idev); if (err) return err; if (device_chip[APANEL_DEV_LED] != CHIP_NONE) { ap->mail_led.name = "mail:blue"; ap->mail_led.brightness_set_blocking = mail_led_set; err = devm_led_classdev_register(&client->dev, &ap->mail_led); if (err) return err; } return 0; } static void apanel_shutdown(struct i2c_client *client) { struct apanel *ap = i2c_get_clientdata(client); if (device_chip[APANEL_DEV_LED] != CHIP_NONE) led_set_brightness(&ap->mail_led, LED_OFF); } static const struct i2c_device_id apanel_id[] = { { "fujitsu_apanel" }, { } }; MODULE_DEVICE_TABLE(i2c, apanel_id); static struct i2c_driver apanel_driver = { .driver = { .name = APANEL, }, .probe = apanel_probe, .shutdown = apanel_shutdown, .id_table = apanel_id, }; /* Scan the system ROM for the signature "FJKEYINF" */ static __init const void __iomem *bios_signature(const void __iomem *bios) { ssize_t offset; const unsigned char signature[] = "FJKEYINF"; for (offset = 0; offset < 0x10000; offset += 0x10) { if (check_signature(bios + offset, signature, sizeof(signature)-1)) return bios + offset; } pr_notice(APANEL ": Fujitsu BIOS signature '%s' not found...\n", signature); return NULL; } static int __init apanel_init(void) { void __iomem *bios; const void __iomem *p; u8 devno; unsigned char i2c_addr; int found = 0; bios = ioremap(0xF0000, 0x10000); /* Can't fail */ p = bios_signature(bios); if (!p) { iounmap(bios); return -ENODEV; } /* just use the first address */ p += 8; i2c_addr = readb(p + 3) >> 1; for ( ; (devno = readb(p)) & 0x7f; p += 4) { unsigned char method, slave, chip; method = readb(p + 1); chip = readb(p + 2); slave = readb(p + 3) >> 1; if (slave != i2c_addr) { pr_notice(APANEL ": only one SMBus slave " "address supported, skipping device...\n"); continue; } /* translate alternative device numbers */ switch (devno) { case 6: devno = APANEL_DEV_APPBTN; break; case 7: devno = APANEL_DEV_LED; break; } if (devno >= APANEL_DEV_MAX) pr_notice(APANEL ": unknown device %u found\n", devno); else if (device_chip[devno] != CHIP_NONE) pr_warn(APANEL ": duplicate entry for devno %u\n", devno); else if (method != 1 && method != 2 && method != 4) { pr_notice(APANEL ": unknown method %u for devno %u\n", method, devno); } else { device_chip[devno] = (enum apanel_chip) chip; ++found; } } iounmap(bios); if (found == 0) { pr_info(APANEL ": no input devices reported by BIOS\n"); return -EIO; } return i2c_add_driver(&apanel_driver); } module_init(apanel_init); static void __exit apanel_cleanup(void) { i2c_del_driver(&apanel_driver); } module_exit(apanel_cleanup); MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>"); MODULE_DESCRIPTION(APANEL_NAME " driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("dmi:*:svnFUJITSU:pnLifeBook*:pvr*:rvnFUJITSU:*"); MODULE_ALIAS("dmi:*:svnFUJITSU:pnLifebook*:pvr*:rvnFUJITSU:*");
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