From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/platform/x86/topstar-laptop.c | 187 ++++++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) create mode 100644 drivers/platform/x86/topstar-laptop.c (limited to 'drivers/platform/x86/topstar-laptop.c') diff --git a/drivers/platform/x86/topstar-laptop.c b/drivers/platform/x86/topstar-laptop.c new file mode 100644 index 000000000..e597de05e --- /dev/null +++ b/drivers/platform/x86/topstar-laptop.c @@ -0,0 +1,187 @@ +/* + * ACPI driver for Topstar notebooks (hotkeys support only) + * + * Copyright (c) 2009 Herton Ronaldo Krzesinski + * + * Implementation inspired by existing x86 platform drivers, in special + * asus/eepc/fujitsu-laptop, thanks to their authors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include + +#define ACPI_TOPSTAR_CLASS "topstar" + +struct topstar_hkey { + struct input_dev *inputdev; +}; + +static const struct key_entry topstar_keymap[] = { + { KE_KEY, 0x80, { KEY_BRIGHTNESSUP } }, + { KE_KEY, 0x81, { KEY_BRIGHTNESSDOWN } }, + { KE_KEY, 0x83, { KEY_VOLUMEUP } }, + { KE_KEY, 0x84, { KEY_VOLUMEDOWN } }, + { KE_KEY, 0x85, { KEY_MUTE } }, + { KE_KEY, 0x86, { KEY_SWITCHVIDEOMODE } }, + { KE_KEY, 0x87, { KEY_F13 } }, /* touchpad enable/disable key */ + { KE_KEY, 0x88, { KEY_WLAN } }, + { KE_KEY, 0x8a, { KEY_WWW } }, + { KE_KEY, 0x8b, { KEY_MAIL } }, + { KE_KEY, 0x8c, { KEY_MEDIA } }, + + /* Known non hotkey events don't handled or that we don't care yet */ + { KE_IGNORE, 0x82, }, /* backlight event */ + { KE_IGNORE, 0x8e, }, + { KE_IGNORE, 0x8f, }, + { KE_IGNORE, 0x90, }, + + /* + * 'G key' generate two event codes, convert to only + * one event/key code for now, consider replacing by + * a switch (3G switch - SW_3G?) + */ + { KE_KEY, 0x96, { KEY_F14 } }, + { KE_KEY, 0x97, { KEY_F14 } }, + + { KE_END, 0 } +}; + +static void acpi_topstar_notify(struct acpi_device *device, u32 event) +{ + static bool dup_evnt[2]; + bool *dup; + struct topstar_hkey *hkey = acpi_driver_data(device); + + /* 0x83 and 0x84 key events comes duplicated... */ + if (event == 0x83 || event == 0x84) { + dup = &dup_evnt[event - 0x83]; + if (*dup) { + *dup = false; + return; + } + *dup = true; + } + + if (!sparse_keymap_report_event(hkey->inputdev, event, 1, true)) + pr_info("unknown event = 0x%02x\n", event); +} + +static int acpi_topstar_fncx_switch(struct acpi_device *device, bool state) +{ + acpi_status status; + + status = acpi_execute_simple_method(device->handle, "FNCX", + state ? 0x86 : 0x87); + if (ACPI_FAILURE(status)) { + pr_err("Unable to switch FNCX notifications\n"); + return -ENODEV; + } + + return 0; +} + +static int acpi_topstar_init_hkey(struct topstar_hkey *hkey) +{ + struct input_dev *input; + int error; + + input = input_allocate_device(); + if (!input) + return -ENOMEM; + + input->name = "Topstar Laptop extra buttons"; + input->phys = "topstar/input0"; + input->id.bustype = BUS_HOST; + + error = sparse_keymap_setup(input, topstar_keymap, NULL); + if (error) { + pr_err("Unable to setup input device keymap\n"); + goto err_free_dev; + } + + error = input_register_device(input); + if (error) { + pr_err("Unable to register input device\n"); + goto err_free_keymap; + } + + hkey->inputdev = input; + return 0; + + err_free_keymap: + sparse_keymap_free(input); + err_free_dev: + input_free_device(input); + return error; +} + +static int acpi_topstar_add(struct acpi_device *device) +{ + struct topstar_hkey *tps_hkey; + + tps_hkey = kzalloc(sizeof(struct topstar_hkey), GFP_KERNEL); + if (!tps_hkey) + return -ENOMEM; + + strcpy(acpi_device_name(device), "Topstar TPSACPI"); + strcpy(acpi_device_class(device), ACPI_TOPSTAR_CLASS); + + if (acpi_topstar_fncx_switch(device, true)) + goto add_err; + + if (acpi_topstar_init_hkey(tps_hkey)) + goto add_err; + + device->driver_data = tps_hkey; + return 0; + +add_err: + kfree(tps_hkey); + return -ENODEV; +} + +static int acpi_topstar_remove(struct acpi_device *device) +{ + struct topstar_hkey *tps_hkey = acpi_driver_data(device); + + acpi_topstar_fncx_switch(device, false); + + sparse_keymap_free(tps_hkey->inputdev); + input_unregister_device(tps_hkey->inputdev); + kfree(tps_hkey); + + return 0; +} + +static const struct acpi_device_id topstar_device_ids[] = { + { "TPSACPI01", 0 }, + { "", 0 }, +}; +MODULE_DEVICE_TABLE(acpi, topstar_device_ids); + +static struct acpi_driver acpi_topstar_driver = { + .name = "Topstar laptop ACPI driver", + .class = ACPI_TOPSTAR_CLASS, + .ids = topstar_device_ids, + .ops = { + .add = acpi_topstar_add, + .remove = acpi_topstar_remove, + .notify = acpi_topstar_notify, + }, +}; +module_acpi_driver(acpi_topstar_driver); + +MODULE_AUTHOR("Herton Ronaldo Krzesinski"); +MODULE_DESCRIPTION("Topstar Laptop ACPI Extras driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-54-g00ecf