From patchwork Fri Mar 6 00:39:41 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Garrett X-Patchwork-Id: 10222 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n260dtfB006162 for ; Fri, 6 Mar 2009 00:39:55 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751405AbZCFAju (ORCPT ); Thu, 5 Mar 2009 19:39:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750898AbZCFAju (ORCPT ); Thu, 5 Mar 2009 19:39:50 -0500 Received: from cavan.codon.org.uk ([93.93.128.6]:42337 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751405AbZCFAjt (ORCPT ); Thu, 5 Mar 2009 19:39:49 -0500 Received: from mjg59 by vavatch.codon.org.uk with local (Exim 4.69) (envelope-from ) id 1LfO6H-0008Rw-KU; Fri, 06 Mar 2009 00:39:41 +0000 Date: Fri, 6 Mar 2009 00:39:41 +0000 From: Matthew Garrett To: linux-acpi@vger.kernel.org Cc: dsilvers@simtec.co.uk, toshiba_acpi@memebeam.org, linux-kernel@vger.kernel.org, lenb@intel.com Subject: [PATCH] toshiba_acpi: Add full hotkey support Message-ID: <20090306003941.GA32403@srcf.ucam.org> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.12-2006-07-14 X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk X-SA-Exim-Scanned: No (on vavatch.codon.org.uk); SAEximRunCond expanded to false Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Calling the ENAB method on Toshiba laptops results in notifications being sent when laptop hotkeys are pressed. This patch simply calls that method and sets up an input device if it's successful. Signed-off-by: Matthew Garrett --- Partially based on polling code written by Daniel Silverstone, but I've turned it into a full input device rather than just sending ACPI notifications. diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index b3866ad..cd9d697 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -372,6 +372,7 @@ config ACPI_TOSHIBA tristate "Toshiba Laptop Extras" depends on ACPI depends on INPUT + select INPUT select INPUT_POLLDEV select NET select RFKILL diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 40e60fc..604f9fa 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -46,6 +46,7 @@ #include #include #include +#include #include @@ -62,9 +63,10 @@ MODULE_LICENSE("GPL"); /* Toshiba ACPI method paths */ #define METHOD_LCD_BRIGHTNESS "\\_SB_.PCI0.VGA_.LCD_._BCM" -#define METHOD_HCI_1 "\\_SB_.VALD.GHCI" -#define METHOD_HCI_2 "\\_SB_.VALZ.GHCI" +#define TOSH_INTERFACE_1 "\\_SB_.VALD" +#define TOSH_INTERFACE_2 "\\_SB_.VALZ" #define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX" +#define GHCI_METHOD ".GHCI" /* Toshiba HCI interface definitions * @@ -116,6 +118,36 @@ static const struct acpi_device_id toshiba_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, toshiba_device_ids); +struct key_entry { + char type; + u16 code; + u16 keycode; +}; + +enum {KE_KEY, KE_END}; + +static struct key_entry toshiba_acpi_keymap[] = { + {KE_KEY, 0x101, KEY_MUTE}, + {KE_KEY, 0x13b, KEY_COFFEE}, + {KE_KEY, 0x13c, KEY_BATTERY}, + {KE_KEY, 0x13d, KEY_SLEEP}, + {KE_KEY, 0x13e, KEY_SUSPEND}, + {KE_KEY, 0x13f, KEY_SWITCHVIDEOMODE}, + {KE_KEY, 0x140, KEY_BRIGHTNESSDOWN}, + {KE_KEY, 0x141, KEY_BRIGHTNESSUP}, + {KE_KEY, 0x142, KEY_WLAN}, + {KE_KEY, 0x143, KEY_PROG1}, + {KE_KEY, 0xb05, KEY_PROG2}, + {KE_KEY, 0xb06, KEY_WWW}, + {KE_KEY, 0xb07, KEY_MAIL}, + {KE_KEY, 0xb30, KEY_STOP}, + {KE_KEY, 0xb31, KEY_PREVIOUSSONG}, + {KE_KEY, 0xb32, KEY_NEXTSONG}, + {KE_KEY, 0xb33, KEY_PLAYPAUSE}, + {KE_KEY, 0xb5a, KEY_MEDIA}, + {KE_END, 0, 0}, +}; + /* utility */ @@ -252,6 +284,8 @@ struct toshiba_acpi_dev { struct platform_device *p_dev; struct rfkill *rfk_dev; struct input_polled_dev *poll_dev; + struct input_dev *hotkey_dev; + acpi_handle handle; const char *bt_name; const char *rfk_name; @@ -702,6 +736,154 @@ static struct backlight_ops toshiba_backlight_data = { .update_status = set_lcd_status, }; +static struct key_entry *toshiba_acpi_get_entry_by_scancode(int code) +{ + struct key_entry *key; + + for (key = toshiba_acpi_keymap; key->type != KE_END; key++) + if (code == key->code) + return key; + + return NULL; +} + +static struct key_entry *toshiba_acpi_get_entry_by_keycode(int code) +{ + struct key_entry *key; + + for (key = toshiba_acpi_keymap; key->type != KE_END; key++) + if (code == key->keycode && key->type == KE_KEY) + return key; + + return NULL; +} + +static int toshiba_acpi_getkeycode(struct input_dev *dev, int scancode, + int *keycode) +{ + struct key_entry *key = toshiba_acpi_get_entry_by_scancode(scancode); + + if (key && key->type == KE_KEY) { + *keycode = key->keycode; + return 0; + } + + return -EINVAL; +} + +static int toshiba_acpi_setkeycode(struct input_dev *dev, int scancode, + int keycode) +{ + struct key_entry *key; + int old_keycode; + + if (keycode < 0 || keycode > KEY_MAX) + return -EINVAL; + + key = toshiba_acpi_get_entry_by_scancode(scancode); + if (key && key->type == KE_KEY) { + old_keycode = key->keycode; + key->keycode = keycode; + set_bit(keycode, dev->keybit); + if (!toshiba_acpi_get_entry_by_keycode(old_keycode)) + clear_bit(old_keycode, dev->keybit); + return 0; + } + + return -EINVAL; +} + +static void toshiba_acpi_notify(acpi_handle handle, u32 event, void **data) +{ + u32 hci_result, value; + struct key_entry *key; + + if (event != 0x80) + return; + do { + hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result); + if (hci_result == HCI_SUCCESS) { + if (value == 0x100) + continue; + else if (value & 0x80) { + key = toshiba_acpi_get_entry_by_scancode + (value & ~0x80); + if (!key) { + printk(MY_INFO "Unknown key %x\n", + value & ~0x80); + continue; + } + input_report_key(toshiba_acpi.hotkey_dev, + key->keycode, 1); + input_sync(toshiba_acpi.hotkey_dev); + input_report_key(toshiba_acpi.hotkey_dev, + key->keycode, 0); + input_sync(toshiba_acpi.hotkey_dev); + } + } else if (hci_result == HCI_NOT_SUPPORTED) { + /* This is a workaround for an unresolved issue on + * some machines where system events sporadically + * become disabled. */ + hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result); + printk(MY_NOTICE "Re-enabled hotkeys\n"); + } + } while (hci_result != HCI_EMPTY); +} + +static int toshiba_acpi_setup_keyboard(char *device) +{ + acpi_status status; + acpi_handle handle; + int result; + const struct key_entry *key; + + status = acpi_get_handle(NULL, device, &handle); + if (ACPI_FAILURE(status)) { + printk(MY_INFO "Unable to get notification device\n"); + return -ENODEV; + } + + toshiba_acpi.handle = handle; + + status = acpi_evaluate_object(handle, "ENAB", NULL, NULL); + if (ACPI_FAILURE(status)) { + printk(MY_INFO "Unable to enable hotkeys\n"); + return -ENODEV; + } + + status = acpi_install_notify_handler (handle, ACPI_DEVICE_NOTIFY, + toshiba_acpi_notify, NULL); + if (ACPI_FAILURE(status)) { + printk(MY_INFO "Unable to install hotkey notification\n"); + return -ENODEV; + } + + toshiba_acpi.hotkey_dev = input_allocate_device(); + if (!toshiba_acpi.hotkey_dev) { + printk(MY_INFO "Unable to register input device\n"); + return -ENOMEM; + } + + toshiba_acpi.hotkey_dev->name = "Toshiba input device"; + toshiba_acpi.hotkey_dev->phys = device; + toshiba_acpi.hotkey_dev->id.bustype = BUS_HOST; + toshiba_acpi.hotkey_dev->getkeycode = toshiba_acpi_getkeycode; + toshiba_acpi.hotkey_dev->setkeycode = toshiba_acpi_setkeycode; + + for (key = toshiba_acpi_keymap; key->type != KE_END; key++) { + set_bit(EV_KEY, toshiba_acpi.hotkey_dev->evbit); + set_bit(key->keycode, toshiba_acpi.hotkey_dev->keybit); + } + + result = input_register_device(toshiba_acpi.hotkey_dev); + if (result) { + printk(MY_INFO "Unable to register input device\n"); + return result; + } + + return 0; +} + static void toshiba_acpi_exit(void) { if (toshiba_acpi.poll_dev) { @@ -709,12 +891,18 @@ static void toshiba_acpi_exit(void) input_free_polled_device(toshiba_acpi.poll_dev); } + if (toshiba_acpi.hotkey_dev) + input_unregister_device(toshiba_acpi.hotkey_dev); + if (toshiba_acpi.rfk_dev) rfkill_unregister(toshiba_acpi.rfk_dev); if (toshiba_backlight_device) backlight_device_unregister(toshiba_backlight_device); + acpi_remove_notify_handler(toshiba_acpi.handle, ACPI_DEVICE_NOTIFY, + toshiba_acpi_notify); + remove_device(); if (toshiba_proc_dir) @@ -738,11 +926,15 @@ static int __init toshiba_acpi_init(void) return -ENODEV; /* simple device detection: look for HCI method */ - if (is_valid_acpi_path(METHOD_HCI_1)) - method_hci = METHOD_HCI_1; - else if (is_valid_acpi_path(METHOD_HCI_2)) - method_hci = METHOD_HCI_2; - else + if (is_valid_acpi_path(TOSH_INTERFACE_1 GHCI_METHOD)) { + method_hci = TOSH_INTERFACE_1 GHCI_METHOD; + if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_1)) + printk(MY_INFO "Unable to activate hotkeys\n"); + } else if (is_valid_acpi_path(TOSH_INTERFACE_2 GHCI_METHOD)) { + method_hci = TOSH_INTERFACE_2 GHCI_METHOD; + if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2)) + printk(MY_INFO "Unable to activate hotkeys\n"); + } else return -ENODEV; printk(MY_INFO "Toshiba Laptop ACPI Extras version %s\n",