f21f85de4b
Rename the ibm-acpi driver to thinkpad-acpi. ThinkPads are not even made by IBM anymore, so it is high time to rename the driver... The name thinkpad-acpi was used sometime ago by a thinkpad-specific hotkey driver by Erik Rigtorp, around the 2.6.8-2.6.10 time frame. The driver apparently never got merged into mainline (it did make some trips through -mm). ibm-acpi was merged soon after, making its debut in 2.6.10. The reuse of the thinkpad-acpi name shouldn't be a problem as far as user confusion goes, as Erik's thinkpad-acpi apparently didn't get widespread use in the Linux ThinkPad community and most hits for thinkpad-acpi in google point to ibm-acpi anyway. Erik, if you read this, please consider the reuse of the thinkpad-acpi name as a compliment to your effort to make ThinkPads more useful to all of us. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2784 lines
64 KiB
C
2784 lines
64 KiB
C
/*
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* ibm_acpi.c - IBM ThinkPad ACPI Extras
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*
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*
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* Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
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* Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#define IBM_VERSION "0.13"
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/*
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* Changelog:
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*
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* 2006-11-22 0.13 new maintainer
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* changelog now lives in git commit history, and will
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* not be updated further in-file.
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*
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* 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels
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* 2005-03-17 0.11 support for 600e, 770x
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* thanks to Jamie Lentin <lentinj@dial.pipex.com>
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* support for 770e, G41
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* G40 and G41 don't have a thinklight
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* temperatures no longer experimental
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* experimental brightness control
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* experimental volume control
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* experimental fan enable/disable
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* 2005-01-16 0.10 fix module loading on R30, R31
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* 2005-01-16 0.9 support for 570, R30, R31
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* ultrabay support on A22p, A3x
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* limit arg for cmos, led, beep, drop experimental status
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* more capable led control on A21e, A22p, T20-22, X20
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* experimental temperatures and fan speed
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* experimental embedded controller register dump
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* mark more functions as __init, drop incorrect __exit
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* use MODULE_VERSION
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* thanks to Henrik Brix Andersen <brix@gentoo.org>
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* fix parameter passing on module loading
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* thanks to Rusty Russell <rusty@rustcorp.com.au>
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* thanks to Jim Radford <radford@blackbean.org>
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* 2004-11-08 0.8 fix init error case, don't return from a macro
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* thanks to Chris Wright <chrisw@osdl.org>
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* 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20
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* fix led control on A21e
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* 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
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* 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
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* proc file format changed
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* video_switch command
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* experimental cmos control
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* experimental led control
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* experimental acpi sounds
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* 2004-09-16 0.4 support for module parameters
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* hotkey mask can be prefixed by 0x
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* video output switching
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* video expansion control
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* ultrabay eject support
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* removed lcd brightness/on/off control, didn't work
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* 2004-08-17 0.3 support for R40
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* lcd off, brightness control
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* thinklight on/off
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* 2004-08-14 0.2 support for T series, X20
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* bluetooth enable/disable
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* hotkey events disabled by default
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* removed fan control, currently useless
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* 2004-08-09 0.1 initial release, support for X series
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*/
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#include "thinkpad_acpi.h"
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MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
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MODULE_DESCRIPTION(IBM_DESC);
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MODULE_VERSION(IBM_VERSION);
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MODULE_LICENSE("GPL");
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#define __unused __attribute__ ((unused))
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/****************************************************************************
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****************************************************************************
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*
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* ACPI Helpers and device model
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*
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****************************************************************************
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****************************************************************************/
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/*************************************************************************
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* ACPI basic handles
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*/
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static acpi_handle root_handle = NULL;
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#define IBM_HANDLE(object, parent, paths...) \
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static acpi_handle object##_handle; \
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static acpi_handle *object##_parent = &parent##_handle; \
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static char *object##_path; \
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static char *object##_paths[] = { paths }
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IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
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"\\_SB.PCI.ISA.EC", /* 570 */
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"\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
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"\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
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"\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
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"\\_SB.PCI0.ICH3.EC0", /* R31 */
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"\\_SB.PCI0.LPC.EC", /* all others */
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);
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IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
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IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
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/*************************************************************************
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* Misc ACPI handles
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*/
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IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
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"\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
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"\\CMS", /* R40, R40e */
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); /* all others */
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IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
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"^HKEY", /* R30, R31 */
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"HKEY", /* all others */
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); /* 570 */
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/*************************************************************************
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* ACPI helpers
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*/
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static int acpi_evalf(acpi_handle handle,
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void *res, char *method, char *fmt, ...)
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{
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char *fmt0 = fmt;
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struct acpi_object_list params;
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union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
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struct acpi_buffer result, *resultp;
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union acpi_object out_obj;
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acpi_status status;
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va_list ap;
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char res_type;
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int success;
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int quiet;
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if (!*fmt) {
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printk(IBM_ERR "acpi_evalf() called with empty format\n");
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return 0;
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}
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if (*fmt == 'q') {
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quiet = 1;
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fmt++;
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} else
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quiet = 0;
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res_type = *(fmt++);
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params.count = 0;
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params.pointer = &in_objs[0];
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va_start(ap, fmt);
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while (*fmt) {
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char c = *(fmt++);
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switch (c) {
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case 'd': /* int */
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in_objs[params.count].integer.value = va_arg(ap, int);
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in_objs[params.count++].type = ACPI_TYPE_INTEGER;
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break;
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/* add more types as needed */
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default:
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printk(IBM_ERR "acpi_evalf() called "
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"with invalid format character '%c'\n", c);
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return 0;
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}
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}
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va_end(ap);
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if (res_type != 'v') {
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result.length = sizeof(out_obj);
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result.pointer = &out_obj;
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resultp = &result;
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} else
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resultp = NULL;
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status = acpi_evaluate_object(handle, method, ¶ms, resultp);
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switch (res_type) {
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case 'd': /* int */
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if (res)
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*(int *)res = out_obj.integer.value;
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success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
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break;
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case 'v': /* void */
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success = status == AE_OK;
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break;
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/* add more types as needed */
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default:
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printk(IBM_ERR "acpi_evalf() called "
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"with invalid format character '%c'\n", res_type);
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return 0;
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}
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if (!success && !quiet)
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printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
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method, fmt0, status);
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return success;
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}
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static void __unused acpi_print_int(acpi_handle handle, char *method)
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{
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int i;
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if (acpi_evalf(handle, &i, method, "d"))
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printk(IBM_INFO "%s = 0x%x\n", method, i);
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else
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printk(IBM_ERR "error calling %s\n", method);
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}
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static int acpi_ec_read(int i, u8 * p)
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{
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int v;
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if (ecrd_handle) {
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if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
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return 0;
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*p = v;
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} else {
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if (ec_read(i, p) < 0)
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return 0;
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}
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return 1;
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}
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static int acpi_ec_write(int i, u8 v)
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{
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if (ecwr_handle) {
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if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
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return 0;
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} else {
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if (ec_write(i, v) < 0)
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return 0;
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}
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return 1;
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}
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static int _sta(acpi_handle handle)
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{
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int status;
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if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
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status = 0;
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return status;
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}
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/*************************************************************************
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* ACPI device model
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*/
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static void __init ibm_handle_init(char *name,
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acpi_handle * handle, acpi_handle parent,
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char **paths, int num_paths, char **path)
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{
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int i;
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acpi_status status;
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for (i = 0; i < num_paths; i++) {
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status = acpi_get_handle(parent, paths[i], handle);
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if (ACPI_SUCCESS(status)) {
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*path = paths[i];
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return;
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}
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}
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*handle = NULL;
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}
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static void dispatch_notify(acpi_handle handle, u32 event, void *data)
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{
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struct ibm_struct *ibm = data;
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if (!ibm || !ibm->notify)
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return;
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ibm->notify(ibm, event);
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}
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static int __init setup_notify(struct ibm_struct *ibm)
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{
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acpi_status status;
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int ret;
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if (!*ibm->handle)
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return 0;
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ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
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if (ret < 0) {
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printk(IBM_ERR "%s device not present\n", ibm->name);
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return -ENODEV;
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}
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acpi_driver_data(ibm->device) = ibm;
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sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name);
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status = acpi_install_notify_handler(*ibm->handle, ibm->type,
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dispatch_notify, ibm);
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if (ACPI_FAILURE(status)) {
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if (status == AE_ALREADY_EXISTS) {
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printk(IBM_NOTICE "another device driver is already handling %s events\n",
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ibm->name);
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} else {
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printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
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ibm->name, status);
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}
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return -ENODEV;
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}
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ibm->notify_installed = 1;
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return 0;
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}
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static int __init ibm_device_add(struct acpi_device *device)
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{
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return 0;
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}
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static int __init register_ibmacpi_subdriver(struct ibm_struct *ibm)
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{
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int ret;
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ibm->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
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if (!ibm->driver) {
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printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
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return -1;
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}
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sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name);
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ibm->driver->ids = ibm->hid;
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ibm->driver->ops.add = &ibm_device_add;
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ret = acpi_bus_register_driver(ibm->driver);
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if (ret < 0) {
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printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
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ibm->hid, ret);
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kfree(ibm->driver);
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}
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return ret;
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}
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/****************************************************************************
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****************************************************************************
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*
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* Procfs Helpers
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*
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****************************************************************************
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****************************************************************************/
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static int dispatch_read(char *page, char **start, off_t off, int count,
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int *eof, void *data)
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{
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struct ibm_struct *ibm = data;
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int len;
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if (!ibm || !ibm->read)
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return -EINVAL;
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len = ibm->read(page);
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if (len < 0)
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return len;
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if (len <= off + count)
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*eof = 1;
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*start = page + off;
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len -= off;
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if (len > count)
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len = count;
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if (len < 0)
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len = 0;
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return len;
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}
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static int dispatch_write(struct file *file, const char __user * userbuf,
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unsigned long count, void *data)
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{
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struct ibm_struct *ibm = data;
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char *kernbuf;
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int ret;
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if (!ibm || !ibm->write)
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return -EINVAL;
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kernbuf = kmalloc(count + 2, GFP_KERNEL);
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if (!kernbuf)
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return -ENOMEM;
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if (copy_from_user(kernbuf, userbuf, count)) {
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kfree(kernbuf);
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return -EFAULT;
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}
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kernbuf[count] = 0;
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strcat(kernbuf, ",");
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ret = ibm->write(kernbuf);
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if (ret == 0)
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ret = count;
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kfree(kernbuf);
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return ret;
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}
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static char *next_cmd(char **cmds)
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{
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char *start = *cmds;
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char *end;
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while ((end = strchr(start, ',')) && end == start)
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start = end + 1;
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if (!end)
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return NULL;
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*end = 0;
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*cmds = end + 1;
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return start;
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}
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/****************************************************************************
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****************************************************************************
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*
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* Subdrivers
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*
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****************************************************************************
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****************************************************************************/
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/*************************************************************************
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* ibm-acpi init subdriver
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*/
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static int ibm_acpi_driver_init(void)
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{
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printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
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printk(IBM_INFO "%s\n", IBM_URL);
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if (ibm_thinkpad_ec_found)
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printk(IBM_INFO "ThinkPad EC firmware %s\n",
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ibm_thinkpad_ec_found);
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return 0;
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}
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static int ibm_acpi_driver_read(char *p)
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{
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int len = 0;
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len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
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len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
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return len;
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}
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|
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/*************************************************************************
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* Hotkey subdriver
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*/
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|
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static int hotkey_supported;
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static int hotkey_mask_supported;
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static int hotkey_orig_status;
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static int hotkey_orig_mask;
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static int hotkey_init(void)
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{
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/* hotkey not supported on 570 */
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hotkey_supported = hkey_handle != NULL;
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if (hotkey_supported) {
|
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/* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
|
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A30, R30, R31, T20-22, X20-21, X22-24 */
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hotkey_mask_supported =
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acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
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if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask))
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return -ENODEV;
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}
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return 0;
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}
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|
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static void hotkey_exit(void)
|
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{
|
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if (hotkey_supported)
|
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hotkey_set(hotkey_orig_status, hotkey_orig_mask);
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}
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|
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static void hotkey_notify(struct ibm_struct *ibm, u32 event)
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{
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int hkey;
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if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
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acpi_bus_generate_event(ibm->device, event, hkey);
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else {
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printk(IBM_ERR "unknown hotkey event %d\n", event);
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acpi_bus_generate_event(ibm->device, event, 0);
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}
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}
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|
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static int hotkey_get(int *status, int *mask)
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{
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if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
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return 0;
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|
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if (hotkey_mask_supported)
|
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if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
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return 0;
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return 1;
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}
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|
|
static int hotkey_set(int status, int mask)
|
|
{
|
|
int i;
|
|
|
|
if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
|
|
return 0;
|
|
|
|
if (hotkey_mask_supported)
|
|
for (i = 0; i < 32; i++) {
|
|
int bit = ((1 << i) & mask) != 0;
|
|
if (!acpi_evalf(hkey_handle,
|
|
NULL, "MHKM", "vdd", i + 1, bit))
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int hotkey_read(char *p)
|
|
{
|
|
int status, mask;
|
|
int len = 0;
|
|
|
|
if (!hotkey_supported) {
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
return len;
|
|
}
|
|
|
|
if (!hotkey_get(&status, &mask))
|
|
return -EIO;
|
|
|
|
len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
|
|
if (hotkey_mask_supported) {
|
|
len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
|
|
len += sprintf(p + len,
|
|
"commands:\tenable, disable, reset, <mask>\n");
|
|
} else {
|
|
len += sprintf(p + len, "mask:\t\tnot supported\n");
|
|
len += sprintf(p + len, "commands:\tenable, disable, reset\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int hotkey_write(char *buf)
|
|
{
|
|
int status, mask;
|
|
char *cmd;
|
|
int do_cmd = 0;
|
|
|
|
if (!hotkey_supported)
|
|
return -ENODEV;
|
|
|
|
if (!hotkey_get(&status, &mask))
|
|
return -EIO;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "enable") == 0) {
|
|
status = 1;
|
|
} else if (strlencmp(cmd, "disable") == 0) {
|
|
status = 0;
|
|
} else if (strlencmp(cmd, "reset") == 0) {
|
|
status = hotkey_orig_status;
|
|
mask = hotkey_orig_mask;
|
|
} else if (sscanf(cmd, "0x%x", &mask) == 1) {
|
|
/* mask set */
|
|
} else if (sscanf(cmd, "%x", &mask) == 1) {
|
|
/* mask set */
|
|
} else
|
|
return -EINVAL;
|
|
do_cmd = 1;
|
|
}
|
|
|
|
if (do_cmd && !hotkey_set(status, mask))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Bluetooth subdriver
|
|
*/
|
|
|
|
static int bluetooth_supported;
|
|
|
|
static int bluetooth_init(void)
|
|
{
|
|
/* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
|
|
G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
|
|
bluetooth_supported = hkey_handle &&
|
|
acpi_evalf(hkey_handle, NULL, "GBDC", "qv");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bluetooth_status(void)
|
|
{
|
|
int status;
|
|
|
|
if (!bluetooth_supported ||
|
|
!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
|
|
status = 0;
|
|
|
|
return status;
|
|
}
|
|
|
|
static int bluetooth_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int status = bluetooth_status();
|
|
|
|
if (!bluetooth_supported)
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
else if (!(status & 1))
|
|
len += sprintf(p + len, "status:\t\tnot installed\n");
|
|
else {
|
|
len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
|
|
len += sprintf(p + len, "commands:\tenable, disable\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int bluetooth_write(char *buf)
|
|
{
|
|
int status = bluetooth_status();
|
|
char *cmd;
|
|
int do_cmd = 0;
|
|
|
|
if (!bluetooth_supported)
|
|
return -ENODEV;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "enable") == 0) {
|
|
status |= 2;
|
|
} else if (strlencmp(cmd, "disable") == 0) {
|
|
status &= ~2;
|
|
} else
|
|
return -EINVAL;
|
|
do_cmd = 1;
|
|
}
|
|
|
|
if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Wan subdriver
|
|
*/
|
|
|
|
static int wan_supported;
|
|
|
|
static int wan_init(void)
|
|
{
|
|
wan_supported = hkey_handle &&
|
|
acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wan_status(void)
|
|
{
|
|
int status;
|
|
|
|
if (!wan_supported || !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
|
|
status = 0;
|
|
|
|
return status;
|
|
}
|
|
|
|
static int wan_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int status = wan_status();
|
|
|
|
if (!wan_supported)
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
else if (!(status & 1))
|
|
len += sprintf(p + len, "status:\t\tnot installed\n");
|
|
else {
|
|
len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
|
|
len += sprintf(p + len, "commands:\tenable, disable\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int wan_write(char *buf)
|
|
{
|
|
int status = wan_status();
|
|
char *cmd;
|
|
int do_cmd = 0;
|
|
|
|
if (!wan_supported)
|
|
return -ENODEV;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "enable") == 0) {
|
|
status |= 2;
|
|
} else if (strlencmp(cmd, "disable") == 0) {
|
|
status &= ~2;
|
|
} else
|
|
return -EINVAL;
|
|
do_cmd = 1;
|
|
}
|
|
|
|
if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Video subdriver
|
|
*/
|
|
|
|
static enum video_access_mode video_supported;
|
|
static int video_orig_autosw;
|
|
|
|
IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
|
|
"\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
|
|
"\\_SB.PCI0.VID0", /* 770e */
|
|
"\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
|
|
"\\_SB.PCI0.AGP.VID", /* all others */
|
|
); /* R30, R31 */
|
|
|
|
IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
|
|
|
|
static int video_init(void)
|
|
{
|
|
int ivga;
|
|
|
|
if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
|
|
/* G41, assume IVGA doesn't change */
|
|
vid_handle = vid2_handle;
|
|
|
|
if (!vid_handle)
|
|
/* video switching not supported on R30, R31 */
|
|
video_supported = IBMACPI_VIDEO_NONE;
|
|
else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
|
|
/* 570 */
|
|
video_supported = IBMACPI_VIDEO_570;
|
|
else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
|
|
/* 600e/x, 770e, 770x */
|
|
video_supported = IBMACPI_VIDEO_770;
|
|
else
|
|
/* all others */
|
|
video_supported = IBMACPI_VIDEO_NEW;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void video_exit(void)
|
|
{
|
|
acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw);
|
|
}
|
|
|
|
static int video_status(void)
|
|
{
|
|
int status = 0;
|
|
int i;
|
|
|
|
if (video_supported == IBMACPI_VIDEO_570) {
|
|
if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87))
|
|
status = i & 3;
|
|
} else if (video_supported == IBMACPI_VIDEO_770) {
|
|
if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
|
|
status |= 0x01 * i;
|
|
if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
|
|
status |= 0x02 * i;
|
|
} else if (video_supported == IBMACPI_VIDEO_NEW) {
|
|
acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
|
|
if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
|
|
status |= 0x02 * i;
|
|
|
|
acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0);
|
|
if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
|
|
status |= 0x01 * i;
|
|
if (acpi_evalf(NULL, &i, "\\VCDD", "d"))
|
|
status |= 0x08 * i;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static int video_autosw(void)
|
|
{
|
|
int autosw = 0;
|
|
|
|
if (video_supported == IBMACPI_VIDEO_570)
|
|
acpi_evalf(vid_handle, &autosw, "SWIT", "d");
|
|
else if (video_supported == IBMACPI_VIDEO_770 ||
|
|
video_supported == IBMACPI_VIDEO_NEW)
|
|
acpi_evalf(vid_handle, &autosw, "^VDEE", "d");
|
|
|
|
return autosw & 1;
|
|
}
|
|
|
|
static int video_switch(void)
|
|
{
|
|
int autosw = video_autosw();
|
|
int ret;
|
|
|
|
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
|
|
return -EIO;
|
|
ret = video_supported == IBMACPI_VIDEO_570 ?
|
|
acpi_evalf(ec_handle, NULL, "_Q16", "v") :
|
|
acpi_evalf(vid_handle, NULL, "VSWT", "v");
|
|
acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int video_expand(void)
|
|
{
|
|
if (video_supported == IBMACPI_VIDEO_570)
|
|
return acpi_evalf(ec_handle, NULL, "_Q17", "v");
|
|
else if (video_supported == IBMACPI_VIDEO_770)
|
|
return acpi_evalf(vid_handle, NULL, "VEXP", "v");
|
|
else
|
|
return acpi_evalf(NULL, NULL, "\\VEXP", "v");
|
|
}
|
|
|
|
static int video_switch2(int status)
|
|
{
|
|
int ret;
|
|
|
|
if (video_supported == IBMACPI_VIDEO_570) {
|
|
ret = acpi_evalf(NULL, NULL,
|
|
"\\_SB.PHS2", "vdd", 0x8b, status | 0x80);
|
|
} else if (video_supported == IBMACPI_VIDEO_770) {
|
|
int autosw = video_autosw();
|
|
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
|
|
return -EIO;
|
|
|
|
ret = acpi_evalf(vid_handle, NULL,
|
|
"ASWT", "vdd", status * 0x100, 0);
|
|
|
|
acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
|
|
} else {
|
|
ret = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
|
|
acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int video_read(char *p)
|
|
{
|
|
int status = video_status();
|
|
int autosw = video_autosw();
|
|
int len = 0;
|
|
|
|
if (!video_supported) {
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
return len;
|
|
}
|
|
|
|
len += sprintf(p + len, "status:\t\tsupported\n");
|
|
len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
|
|
len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
|
|
if (video_supported == IBMACPI_VIDEO_NEW)
|
|
len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
|
|
len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
|
|
len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
|
|
len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
|
|
if (video_supported == IBMACPI_VIDEO_NEW)
|
|
len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
|
|
len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
|
|
len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
static int video_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
int enable, disable, status;
|
|
|
|
if (!video_supported)
|
|
return -ENODEV;
|
|
|
|
enable = disable = 0;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "lcd_enable") == 0) {
|
|
enable |= 0x01;
|
|
} else if (strlencmp(cmd, "lcd_disable") == 0) {
|
|
disable |= 0x01;
|
|
} else if (strlencmp(cmd, "crt_enable") == 0) {
|
|
enable |= 0x02;
|
|
} else if (strlencmp(cmd, "crt_disable") == 0) {
|
|
disable |= 0x02;
|
|
} else if (video_supported == IBMACPI_VIDEO_NEW &&
|
|
strlencmp(cmd, "dvi_enable") == 0) {
|
|
enable |= 0x08;
|
|
} else if (video_supported == IBMACPI_VIDEO_NEW &&
|
|
strlencmp(cmd, "dvi_disable") == 0) {
|
|
disable |= 0x08;
|
|
} else if (strlencmp(cmd, "auto_enable") == 0) {
|
|
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
|
|
return -EIO;
|
|
} else if (strlencmp(cmd, "auto_disable") == 0) {
|
|
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0))
|
|
return -EIO;
|
|
} else if (strlencmp(cmd, "video_switch") == 0) {
|
|
if (!video_switch())
|
|
return -EIO;
|
|
} else if (strlencmp(cmd, "expand_toggle") == 0) {
|
|
if (!video_expand())
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (enable || disable) {
|
|
status = (video_status() & 0x0f & ~disable) | enable;
|
|
if (!video_switch2(status))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Light (thinklight) subdriver
|
|
*/
|
|
|
|
static int light_supported;
|
|
static int light_status_supported;
|
|
|
|
IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
|
|
IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
|
|
|
|
static int light_init(void)
|
|
{
|
|
/* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
|
|
light_supported = (cmos_handle || lght_handle) && !ledb_handle;
|
|
|
|
if (light_supported)
|
|
/* light status not supported on
|
|
570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
|
|
light_status_supported = acpi_evalf(ec_handle, NULL,
|
|
"KBLT", "qv");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int light_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int status = 0;
|
|
|
|
if (!light_supported) {
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
} else if (!light_status_supported) {
|
|
len += sprintf(p + len, "status:\t\tunknown\n");
|
|
len += sprintf(p + len, "commands:\ton, off\n");
|
|
} else {
|
|
if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
|
|
return -EIO;
|
|
len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
|
|
len += sprintf(p + len, "commands:\ton, off\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int light_write(char *buf)
|
|
{
|
|
int cmos_cmd, lght_cmd;
|
|
char *cmd;
|
|
int success;
|
|
|
|
if (!light_supported)
|
|
return -ENODEV;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "on") == 0) {
|
|
cmos_cmd = 0x0c;
|
|
lght_cmd = 1;
|
|
} else if (strlencmp(cmd, "off") == 0) {
|
|
cmos_cmd = 0x0d;
|
|
lght_cmd = 0;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
success = cmos_handle ?
|
|
acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
|
|
acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
|
|
if (!success)
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Dock subdriver
|
|
*/
|
|
|
|
/* don't list other alternatives as we install a notify handler on the 570 */
|
|
IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
|
|
|
|
#ifdef CONFIG_ACPI_IBM_DOCK
|
|
|
|
IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
|
|
"\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
|
|
"\\_SB.PCI0.PCI1.DOCK", /* all others */
|
|
"\\_SB.PCI.ISA.SLCE", /* 570 */
|
|
); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
|
|
|
|
#define dock_docked() (_sta(dock_handle) & 1)
|
|
|
|
static void dock_notify(struct ibm_struct *ibm, u32 event)
|
|
{
|
|
int docked = dock_docked();
|
|
int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID);
|
|
|
|
if (event == 1 && !pci) /* 570 */
|
|
acpi_bus_generate_event(ibm->device, event, 1); /* button */
|
|
else if (event == 1 && pci) /* 570 */
|
|
acpi_bus_generate_event(ibm->device, event, 3); /* dock */
|
|
else if (event == 3 && docked)
|
|
acpi_bus_generate_event(ibm->device, event, 1); /* button */
|
|
else if (event == 3 && !docked)
|
|
acpi_bus_generate_event(ibm->device, event, 2); /* undock */
|
|
else if (event == 0 && docked)
|
|
acpi_bus_generate_event(ibm->device, event, 3); /* dock */
|
|
else {
|
|
printk(IBM_ERR "unknown dock event %d, status %d\n",
|
|
event, _sta(dock_handle));
|
|
acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
|
|
}
|
|
}
|
|
|
|
static int dock_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int docked = dock_docked();
|
|
|
|
if (!dock_handle)
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
else if (!docked)
|
|
len += sprintf(p + len, "status:\t\tundocked\n");
|
|
else {
|
|
len += sprintf(p + len, "status:\t\tdocked\n");
|
|
len += sprintf(p + len, "commands:\tdock, undock\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int dock_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
|
|
if (!dock_docked())
|
|
return -ENODEV;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "undock") == 0) {
|
|
if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
|
|
!acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
|
|
return -EIO;
|
|
} else if (strlencmp(cmd, "dock") == 0) {
|
|
if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_ACPI_IBM_DOCK */
|
|
|
|
/*************************************************************************
|
|
* Bay subdriver
|
|
*/
|
|
|
|
#ifdef CONFIG_ACPI_IBM_BAY
|
|
static int bay_status_supported;
|
|
static int bay_status2_supported;
|
|
static int bay_eject_supported;
|
|
static int bay_eject2_supported;
|
|
|
|
IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
|
|
"\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
|
|
"\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
|
|
"\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
|
|
); /* A21e, R30, R31 */
|
|
IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
|
|
"_EJ0", /* all others */
|
|
); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
|
|
IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
|
|
"\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
|
|
); /* all others */
|
|
IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
|
|
"_EJ0", /* 770x */
|
|
); /* all others */
|
|
|
|
static int bay_init(void)
|
|
{
|
|
bay_status_supported = bay_handle &&
|
|
acpi_evalf(bay_handle, NULL, "_STA", "qv");
|
|
bay_status2_supported = bay2_handle &&
|
|
acpi_evalf(bay2_handle, NULL, "_STA", "qv");
|
|
|
|
bay_eject_supported = bay_handle && bay_ej_handle &&
|
|
(strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
|
|
bay_eject2_supported = bay2_handle && bay2_ej_handle &&
|
|
(strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bay_notify(struct ibm_struct *ibm, u32 event)
|
|
{
|
|
acpi_bus_generate_event(ibm->device, event, 0);
|
|
}
|
|
|
|
#define bay_occupied(b) (_sta(b##_handle) & 1)
|
|
|
|
static int bay_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int occupied = bay_occupied(bay);
|
|
int occupied2 = bay_occupied(bay2);
|
|
int eject, eject2;
|
|
|
|
len += sprintf(p + len, "status:\t\t%s\n", bay_status_supported ?
|
|
(occupied ? "occupied" : "unoccupied") :
|
|
"not supported");
|
|
if (bay_status2_supported)
|
|
len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
|
|
"occupied" : "unoccupied");
|
|
|
|
eject = bay_eject_supported && occupied;
|
|
eject2 = bay_eject2_supported && occupied2;
|
|
|
|
if (eject && eject2)
|
|
len += sprintf(p + len, "commands:\teject, eject2\n");
|
|
else if (eject)
|
|
len += sprintf(p + len, "commands:\teject\n");
|
|
else if (eject2)
|
|
len += sprintf(p + len, "commands:\teject2\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
static int bay_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
|
|
if (!bay_eject_supported && !bay_eject2_supported)
|
|
return -ENODEV;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (bay_eject_supported && strlencmp(cmd, "eject") == 0) {
|
|
if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
|
|
return -EIO;
|
|
} else if (bay_eject2_supported &&
|
|
strlencmp(cmd, "eject2") == 0) {
|
|
if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_ACPI_IBM_BAY */
|
|
|
|
/*************************************************************************
|
|
* CMOS subdriver
|
|
*/
|
|
|
|
static int cmos_eval(int cmos_cmd)
|
|
{
|
|
if (cmos_handle)
|
|
return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd);
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
static int cmos_read(char *p)
|
|
{
|
|
int len = 0;
|
|
|
|
/* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
|
|
R30, R31, T20-22, X20-21 */
|
|
if (!cmos_handle)
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
else {
|
|
len += sprintf(p + len, "status:\t\tsupported\n");
|
|
len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int cmos_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
int cmos_cmd;
|
|
|
|
if (!cmos_handle)
|
|
return -EINVAL;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
|
|
cmos_cmd >= 0 && cmos_cmd <= 21) {
|
|
/* cmos_cmd set */
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (!cmos_eval(cmos_cmd))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* LED subdriver
|
|
*/
|
|
|
|
static enum led_access_mode led_supported;
|
|
|
|
IBM_HANDLE(led, ec, "SLED", /* 570 */
|
|
"SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
|
|
"LED", /* all others */
|
|
); /* R30, R31 */
|
|
|
|
static int led_init(void)
|
|
{
|
|
if (!led_handle)
|
|
/* led not supported on R30, R31 */
|
|
led_supported = IBMACPI_LED_NONE;
|
|
else if (strlencmp(led_path, "SLED") == 0)
|
|
/* 570 */
|
|
led_supported = IBMACPI_LED_570;
|
|
else if (strlencmp(led_path, "SYSL") == 0)
|
|
/* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
|
|
led_supported = IBMACPI_LED_OLD;
|
|
else
|
|
/* all others */
|
|
led_supported = IBMACPI_LED_NEW;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
|
|
|
|
static int led_read(char *p)
|
|
{
|
|
int len = 0;
|
|
|
|
if (!led_supported) {
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
return len;
|
|
}
|
|
len += sprintf(p + len, "status:\t\tsupported\n");
|
|
|
|
if (led_supported == IBMACPI_LED_570) {
|
|
/* 570 */
|
|
int i, status;
|
|
for (i = 0; i < 8; i++) {
|
|
if (!acpi_evalf(ec_handle,
|
|
&status, "GLED", "dd", 1 << i))
|
|
return -EIO;
|
|
len += sprintf(p + len, "%d:\t\t%s\n",
|
|
i, led_status(status));
|
|
}
|
|
}
|
|
|
|
len += sprintf(p + len, "commands:\t"
|
|
"<led> on, <led> off, <led> blink (<led> is 0-7)\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
/* off, on, blink */
|
|
static const int led_sled_arg1[] = { 0, 1, 3 };
|
|
static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
|
|
static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
|
|
static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
|
|
|
|
static int led_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
int led, ind, ret;
|
|
|
|
if (!led_supported)
|
|
return -ENODEV;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
|
|
return -EINVAL;
|
|
|
|
if (strstr(cmd, "off")) {
|
|
ind = 0;
|
|
} else if (strstr(cmd, "on")) {
|
|
ind = 1;
|
|
} else if (strstr(cmd, "blink")) {
|
|
ind = 2;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (led_supported == IBMACPI_LED_570) {
|
|
/* 570 */
|
|
led = 1 << led;
|
|
if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
|
|
led, led_sled_arg1[ind]))
|
|
return -EIO;
|
|
} else if (led_supported == IBMACPI_LED_OLD) {
|
|
/* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
|
|
led = 1 << led;
|
|
ret = ec_write(IBMACPI_LED_EC_HLMS, led);
|
|
if (ret >= 0)
|
|
ret =
|
|
ec_write(IBMACPI_LED_EC_HLBL,
|
|
led * led_exp_hlbl[ind]);
|
|
if (ret >= 0)
|
|
ret =
|
|
ec_write(IBMACPI_LED_EC_HLCL,
|
|
led * led_exp_hlcl[ind]);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
/* all others */
|
|
if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
|
|
led, led_led_arg1[ind]))
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Beep subdriver
|
|
*/
|
|
|
|
IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
|
|
|
|
static int beep_read(char *p)
|
|
{
|
|
int len = 0;
|
|
|
|
if (!beep_handle)
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
else {
|
|
len += sprintf(p + len, "status:\t\tsupported\n");
|
|
len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int beep_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
int beep_cmd;
|
|
|
|
if (!beep_handle)
|
|
return -ENODEV;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
|
|
beep_cmd >= 0 && beep_cmd <= 17) {
|
|
/* beep_cmd set */
|
|
} else
|
|
return -EINVAL;
|
|
if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Thermal subdriver
|
|
*/
|
|
|
|
static enum thermal_access_mode thermal_read_mode;
|
|
|
|
static int thermal_init(void)
|
|
{
|
|
u8 t, ta1, ta2;
|
|
int i;
|
|
int acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
|
|
|
|
if (ibm_thinkpad_ec_found && experimental) {
|
|
/*
|
|
* Direct EC access mode: sensors at registers
|
|
* 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
|
|
* non-implemented, thermal sensors return 0x80 when
|
|
* not available
|
|
*/
|
|
|
|
ta1 = ta2 = 0;
|
|
for (i = 0; i < 8; i++) {
|
|
if (likely(acpi_ec_read(0x78 + i, &t))) {
|
|
ta1 |= t;
|
|
} else {
|
|
ta1 = 0;
|
|
break;
|
|
}
|
|
if (likely(acpi_ec_read(0xC0 + i, &t))) {
|
|
ta2 |= t;
|
|
} else {
|
|
ta1 = 0;
|
|
break;
|
|
}
|
|
}
|
|
if (ta1 == 0) {
|
|
/* This is sheer paranoia, but we handle it anyway */
|
|
if (acpi_tmp7) {
|
|
printk(IBM_ERR
|
|
"ThinkPad ACPI EC access misbehaving, "
|
|
"falling back to ACPI TMPx access mode\n");
|
|
thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
|
|
} else {
|
|
printk(IBM_ERR
|
|
"ThinkPad ACPI EC access misbehaving, "
|
|
"disabling thermal sensors access\n");
|
|
thermal_read_mode = IBMACPI_THERMAL_NONE;
|
|
}
|
|
} else {
|
|
thermal_read_mode =
|
|
(ta2 != 0) ?
|
|
IBMACPI_THERMAL_TPEC_16 : IBMACPI_THERMAL_TPEC_8;
|
|
}
|
|
} else if (acpi_tmp7) {
|
|
if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
|
|
/* 600e/x, 770e, 770x */
|
|
thermal_read_mode = IBMACPI_THERMAL_ACPI_UPDT;
|
|
} else {
|
|
/* Standard ACPI TMPx access, max 8 sensors */
|
|
thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
|
|
}
|
|
} else {
|
|
/* temperatures not supported on 570, G4x, R30, R31, R32 */
|
|
thermal_read_mode = IBMACPI_THERMAL_NONE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
|
|
{
|
|
int i, t;
|
|
s8 tmp;
|
|
char tmpi[] = "TMPi";
|
|
|
|
if (!s)
|
|
return -EINVAL;
|
|
|
|
switch (thermal_read_mode) {
|
|
#if IBMACPI_MAX_THERMAL_SENSORS >= 16
|
|
case IBMACPI_THERMAL_TPEC_16:
|
|
for (i = 0; i < 8; i++) {
|
|
if (!acpi_ec_read(0xC0 + i, &tmp))
|
|
return -EIO;
|
|
s->temp[i + 8] = tmp * 1000;
|
|
}
|
|
/* fallthrough */
|
|
#endif
|
|
case IBMACPI_THERMAL_TPEC_8:
|
|
for (i = 0; i < 8; i++) {
|
|
if (!acpi_ec_read(0x78 + i, &tmp))
|
|
return -EIO;
|
|
s->temp[i] = tmp * 1000;
|
|
}
|
|
return (thermal_read_mode == IBMACPI_THERMAL_TPEC_16) ? 16 : 8;
|
|
|
|
case IBMACPI_THERMAL_ACPI_UPDT:
|
|
if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
|
|
return -EIO;
|
|
for (i = 0; i < 8; i++) {
|
|
tmpi[3] = '0' + i;
|
|
if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
|
|
return -EIO;
|
|
s->temp[i] = (t - 2732) * 100;
|
|
}
|
|
return 8;
|
|
|
|
case IBMACPI_THERMAL_ACPI_TMP07:
|
|
for (i = 0; i < 8; i++) {
|
|
tmpi[3] = '0' + i;
|
|
if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
|
|
return -EIO;
|
|
s->temp[i] = t * 1000;
|
|
}
|
|
return 8;
|
|
|
|
case IBMACPI_THERMAL_NONE:
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int thermal_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int n, i;
|
|
struct ibm_thermal_sensors_struct t;
|
|
|
|
n = thermal_get_sensors(&t);
|
|
if (unlikely(n < 0))
|
|
return n;
|
|
|
|
len += sprintf(p + len, "temperatures:\t");
|
|
|
|
if (n > 0) {
|
|
for (i = 0; i < (n - 1); i++)
|
|
len += sprintf(p + len, "%d ", t.temp[i] / 1000);
|
|
len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
|
|
} else
|
|
len += sprintf(p + len, "not supported\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* EC Dump subdriver
|
|
*/
|
|
|
|
static u8 ecdump_regs[256];
|
|
|
|
static int ecdump_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int i, j;
|
|
u8 v;
|
|
|
|
len += sprintf(p + len, "EC "
|
|
" +00 +01 +02 +03 +04 +05 +06 +07"
|
|
" +08 +09 +0a +0b +0c +0d +0e +0f\n");
|
|
for (i = 0; i < 256; i += 16) {
|
|
len += sprintf(p + len, "EC 0x%02x:", i);
|
|
for (j = 0; j < 16; j++) {
|
|
if (!acpi_ec_read(i + j, &v))
|
|
break;
|
|
if (v != ecdump_regs[i + j])
|
|
len += sprintf(p + len, " *%02x", v);
|
|
else
|
|
len += sprintf(p + len, " %02x", v);
|
|
ecdump_regs[i + j] = v;
|
|
}
|
|
len += sprintf(p + len, "\n");
|
|
if (j != 16)
|
|
break;
|
|
}
|
|
|
|
/* These are way too dangerous to advertise openly... */
|
|
#if 0
|
|
len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
|
|
" (<offset> is 00-ff, <value> is 00-ff)\n");
|
|
len += sprintf(p + len, "commands:\t0x<offset> <value> "
|
|
" (<offset> is 00-ff, <value> is 0-255)\n");
|
|
#endif
|
|
return len;
|
|
}
|
|
|
|
static int ecdump_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
int i, v;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
|
|
/* i and v set */
|
|
} else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
|
|
/* i and v set */
|
|
} else
|
|
return -EINVAL;
|
|
if (i >= 0 && i < 256 && v >= 0 && v < 256) {
|
|
if (!acpi_ec_write(i, v))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Backlight/brightness subdriver
|
|
*/
|
|
|
|
static struct backlight_device *ibm_backlight_device = NULL;
|
|
|
|
static struct backlight_ops ibm_backlight_data = {
|
|
.get_brightness = brightness_get,
|
|
.update_status = brightness_update_status,
|
|
};
|
|
|
|
static int brightness_init(void)
|
|
{
|
|
int b;
|
|
|
|
b = brightness_get(NULL);
|
|
if (b < 0)
|
|
return b;
|
|
|
|
ibm_backlight_device = backlight_device_register("ibm", NULL, NULL,
|
|
&ibm_backlight_data);
|
|
if (IS_ERR(ibm_backlight_device)) {
|
|
printk(IBM_ERR "Could not register backlight device\n");
|
|
return PTR_ERR(ibm_backlight_device);
|
|
}
|
|
|
|
ibm_backlight_device->props.max_brightness = 7;
|
|
ibm_backlight_device->props.brightness = b;
|
|
backlight_update_status(ibm_backlight_device);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void brightness_exit(void)
|
|
{
|
|
if (ibm_backlight_device) {
|
|
backlight_device_unregister(ibm_backlight_device);
|
|
ibm_backlight_device = NULL;
|
|
}
|
|
}
|
|
|
|
static int brightness_update_status(struct backlight_device *bd)
|
|
{
|
|
return brightness_set(
|
|
(bd->props.fb_blank == FB_BLANK_UNBLANK &&
|
|
bd->props.power == FB_BLANK_UNBLANK) ?
|
|
bd->props.brightness : 0);
|
|
}
|
|
|
|
static int brightness_get(struct backlight_device *bd)
|
|
{
|
|
u8 level;
|
|
if (!acpi_ec_read(brightness_offset, &level))
|
|
return -EIO;
|
|
|
|
level &= 0x7;
|
|
|
|
return level;
|
|
}
|
|
|
|
static int brightness_set(int value)
|
|
{
|
|
int cmos_cmd, inc, i;
|
|
int current_value = brightness_get(NULL);
|
|
|
|
value &= 7;
|
|
|
|
cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN;
|
|
inc = value > current_value ? 1 : -1;
|
|
for (i = current_value; i != value; i += inc) {
|
|
if (!cmos_eval(cmos_cmd))
|
|
return -EIO;
|
|
if (!acpi_ec_write(brightness_offset, i + inc))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int brightness_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int level;
|
|
|
|
if ((level = brightness_get(NULL)) < 0) {
|
|
len += sprintf(p + len, "level:\t\tunreadable\n");
|
|
} else {
|
|
len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
|
|
len += sprintf(p + len, "commands:\tup, down\n");
|
|
len += sprintf(p + len, "commands:\tlevel <level>"
|
|
" (<level> is 0-7)\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int brightness_write(char *buf)
|
|
{
|
|
int level;
|
|
int new_level;
|
|
char *cmd;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if ((level = brightness_get(NULL)) < 0)
|
|
return level;
|
|
level &= 7;
|
|
|
|
if (strlencmp(cmd, "up") == 0) {
|
|
new_level = level == 7 ? 7 : level + 1;
|
|
} else if (strlencmp(cmd, "down") == 0) {
|
|
new_level = level == 0 ? 0 : level - 1;
|
|
} else if (sscanf(cmd, "level %d", &new_level) == 1 &&
|
|
new_level >= 0 && new_level <= 7) {
|
|
/* new_level set */
|
|
} else
|
|
return -EINVAL;
|
|
|
|
brightness_set(new_level);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Volume subdriver
|
|
*/
|
|
|
|
static int volume_read(char *p)
|
|
{
|
|
int len = 0;
|
|
u8 level;
|
|
|
|
if (!acpi_ec_read(volume_offset, &level)) {
|
|
len += sprintf(p + len, "level:\t\tunreadable\n");
|
|
} else {
|
|
len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
|
|
len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
|
|
len += sprintf(p + len, "commands:\tup, down, mute\n");
|
|
len += sprintf(p + len, "commands:\tlevel <level>"
|
|
" (<level> is 0-15)\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int volume_write(char *buf)
|
|
{
|
|
int cmos_cmd, inc, i;
|
|
u8 level, mute;
|
|
int new_level, new_mute;
|
|
char *cmd;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (!acpi_ec_read(volume_offset, &level))
|
|
return -EIO;
|
|
new_mute = mute = level & 0x40;
|
|
new_level = level = level & 0xf;
|
|
|
|
if (strlencmp(cmd, "up") == 0) {
|
|
if (mute)
|
|
new_mute = 0;
|
|
else
|
|
new_level = level == 15 ? 15 : level + 1;
|
|
} else if (strlencmp(cmd, "down") == 0) {
|
|
if (mute)
|
|
new_mute = 0;
|
|
else
|
|
new_level = level == 0 ? 0 : level - 1;
|
|
} else if (sscanf(cmd, "level %d", &new_level) == 1 &&
|
|
new_level >= 0 && new_level <= 15) {
|
|
/* new_level set */
|
|
} else if (strlencmp(cmd, "mute") == 0) {
|
|
new_mute = 0x40;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (new_level != level) { /* mute doesn't change */
|
|
cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
|
|
inc = new_level > level ? 1 : -1;
|
|
|
|
if (mute && (!cmos_eval(cmos_cmd) ||
|
|
!acpi_ec_write(volume_offset, level)))
|
|
return -EIO;
|
|
|
|
for (i = level; i != new_level; i += inc)
|
|
if (!cmos_eval(cmos_cmd) ||
|
|
!acpi_ec_write(volume_offset, i + inc))
|
|
return -EIO;
|
|
|
|
if (mute && (!cmos_eval(TP_CMOS_VOLUME_MUTE) ||
|
|
!acpi_ec_write(volume_offset,
|
|
new_level + mute)))
|
|
return -EIO;
|
|
}
|
|
|
|
if (new_mute != mute) { /* level doesn't change */
|
|
cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
|
|
|
|
if (!cmos_eval(cmos_cmd) ||
|
|
!acpi_ec_write(volume_offset, level + new_mute))
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* Fan subdriver
|
|
*/
|
|
|
|
/*
|
|
* FAN ACCESS MODES
|
|
*
|
|
* IBMACPI_FAN_RD_ACPI_GFAN:
|
|
* ACPI GFAN method: returns fan level
|
|
*
|
|
* see IBMACPI_FAN_WR_ACPI_SFAN
|
|
* EC 0x2f not available if GFAN exists
|
|
*
|
|
* IBMACPI_FAN_WR_ACPI_SFAN:
|
|
* ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
|
|
*
|
|
* EC 0x2f might be available *for reading*, but never for writing.
|
|
*
|
|
* IBMACPI_FAN_WR_TPEC:
|
|
* ThinkPad EC register 0x2f (HFSP): fan control loop mode Supported
|
|
* on almost all ThinkPads
|
|
*
|
|
* Fan speed changes of any sort (including those caused by the
|
|
* disengaged mode) are usually done slowly by the firmware as the
|
|
* maximum ammount of fan duty cycle change per second seems to be
|
|
* limited.
|
|
*
|
|
* Reading is not available if GFAN exists.
|
|
* Writing is not available if SFAN exists.
|
|
*
|
|
* Bits
|
|
* 7 automatic mode engaged;
|
|
* (default operation mode of the ThinkPad)
|
|
* fan level is ignored in this mode.
|
|
* 6 disengage mode (takes precedence over bit 7);
|
|
* not available on all thinkpads. May disable
|
|
* the tachometer, and speeds up fan to 100% duty-cycle,
|
|
* which speeds it up far above the standard RPM
|
|
* levels. It is not impossible that it could cause
|
|
* hardware damage.
|
|
* 5-3 unused in some models. Extra bits for fan level
|
|
* in others, but still useless as all values above
|
|
* 7 map to the same speed as level 7 in these models.
|
|
* 2-0 fan level (0..7 usually)
|
|
* 0x00 = stop
|
|
* 0x07 = max (set when temperatures critical)
|
|
* Some ThinkPads may have other levels, see
|
|
* IBMACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
|
|
*
|
|
* FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
|
|
* boot. Apparently the EC does not intialize it, so unless ACPI DSDT
|
|
* does so, its initial value is meaningless (0x07).
|
|
*
|
|
* For firmware bugs, refer to:
|
|
* http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
|
|
*
|
|
* ----
|
|
*
|
|
* ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
|
|
* Main fan tachometer reading (in RPM)
|
|
*
|
|
* This register is present on all ThinkPads with a new-style EC, and
|
|
* it is known not to be present on the A21m/e, and T22, as there is
|
|
* something else in offset 0x84 according to the ACPI DSDT. Other
|
|
* ThinkPads from this same time period (and earlier) probably lack the
|
|
* tachometer as well.
|
|
*
|
|
* Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
|
|
* was never fixed by IBM to report the EC firmware version string
|
|
* probably support the tachometer (like the early X models), so
|
|
* detecting it is quite hard. We need more data to know for sure.
|
|
*
|
|
* FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
|
|
* might result.
|
|
*
|
|
* FIRMWARE BUG: when EC 0x2f bit 6 is set (disengaged mode), this
|
|
* register is not invalidated in ThinkPads that disable tachometer
|
|
* readings. Thus, the tachometer readings go stale.
|
|
*
|
|
* For firmware bugs, refer to:
|
|
* http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
|
|
*
|
|
* IBMACPI_FAN_WR_ACPI_FANS:
|
|
* ThinkPad X31, X40, X41. Not available in the X60.
|
|
*
|
|
* FANS ACPI handle: takes three arguments: low speed, medium speed,
|
|
* high speed. ACPI DSDT seems to map these three speeds to levels
|
|
* as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
|
|
* (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
|
|
*
|
|
* The speeds are stored on handles
|
|
* (FANA:FAN9), (FANC:FANB), (FANE:FAND).
|
|
*
|
|
* There are three default speed sets, acessible as handles:
|
|
* FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
|
|
*
|
|
* ACPI DSDT switches which set is in use depending on various
|
|
* factors.
|
|
*
|
|
* IBMACPI_FAN_WR_TPEC is also available and should be used to
|
|
* command the fan. The X31/X40/X41 seems to have 8 fan levels,
|
|
* but the ACPI tables just mention level 7.
|
|
*/
|
|
|
|
static enum fan_status_access_mode fan_status_access_mode;
|
|
static enum fan_control_access_mode fan_control_access_mode;
|
|
static enum fan_control_commands fan_control_commands;
|
|
|
|
static int fan_control_status_known;
|
|
static u8 fan_control_initial_status;
|
|
|
|
static void fan_watchdog_fire(struct work_struct *ignored);
|
|
static int fan_watchdog_maxinterval;
|
|
static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
|
|
|
|
IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
|
|
IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
|
|
"\\FSPD", /* 600e/x, 770e, 770x */
|
|
); /* all others */
|
|
IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
|
|
"JFNS", /* 770x-JL */
|
|
); /* all others */
|
|
|
|
static int fan_init(void)
|
|
{
|
|
fan_status_access_mode = IBMACPI_FAN_NONE;
|
|
fan_control_access_mode = IBMACPI_FAN_WR_NONE;
|
|
fan_control_commands = 0;
|
|
fan_control_status_known = 1;
|
|
fan_watchdog_maxinterval = 0;
|
|
|
|
if (gfan_handle) {
|
|
/* 570, 600e/x, 770e, 770x */
|
|
fan_status_access_mode = IBMACPI_FAN_RD_ACPI_GFAN;
|
|
} else {
|
|
/* all other ThinkPads: note that even old-style
|
|
* ThinkPad ECs supports the fan control register */
|
|
if (likely(acpi_ec_read(fan_status_offset,
|
|
&fan_control_initial_status))) {
|
|
fan_status_access_mode = IBMACPI_FAN_RD_TPEC;
|
|
|
|
/* In some ThinkPads, neither the EC nor the ACPI
|
|
* DSDT initialize the fan status, and it ends up
|
|
* being set to 0x07 when it *could* be either
|
|
* 0x07 or 0x80.
|
|
*
|
|
* Enable for TP-1Y (T43), TP-78 (R51e),
|
|
* TP-76 (R52), TP-70 (T43, R52), which are known
|
|
* to be buggy. */
|
|
if (fan_control_initial_status == 0x07 &&
|
|
ibm_thinkpad_ec_found &&
|
|
((ibm_thinkpad_ec_found[0] == '1' &&
|
|
ibm_thinkpad_ec_found[1] == 'Y') ||
|
|
(ibm_thinkpad_ec_found[0] == '7' &&
|
|
(ibm_thinkpad_ec_found[1] == '6' ||
|
|
ibm_thinkpad_ec_found[1] == '8' ||
|
|
ibm_thinkpad_ec_found[1] == '0'))
|
|
)) {
|
|
printk(IBM_NOTICE
|
|
"fan_init: initial fan status is "
|
|
"unknown, assuming it is in auto "
|
|
"mode\n");
|
|
fan_control_status_known = 0;
|
|
}
|
|
} else {
|
|
printk(IBM_ERR
|
|
"ThinkPad ACPI EC access misbehaving, "
|
|
"fan status and control unavailable\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (sfan_handle) {
|
|
/* 570, 770x-JL */
|
|
fan_control_access_mode = IBMACPI_FAN_WR_ACPI_SFAN;
|
|
fan_control_commands |=
|
|
IBMACPI_FAN_CMD_LEVEL | IBMACPI_FAN_CMD_ENABLE;
|
|
} else {
|
|
if (!gfan_handle) {
|
|
/* gfan without sfan means no fan control */
|
|
/* all other models implement TP EC 0x2f control */
|
|
|
|
if (fans_handle) {
|
|
/* X31, X40, X41 */
|
|
fan_control_access_mode =
|
|
IBMACPI_FAN_WR_ACPI_FANS;
|
|
fan_control_commands |=
|
|
IBMACPI_FAN_CMD_SPEED |
|
|
IBMACPI_FAN_CMD_LEVEL |
|
|
IBMACPI_FAN_CMD_ENABLE;
|
|
} else {
|
|
fan_control_access_mode = IBMACPI_FAN_WR_TPEC;
|
|
fan_control_commands |=
|
|
IBMACPI_FAN_CMD_LEVEL |
|
|
IBMACPI_FAN_CMD_ENABLE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fan_get_status(u8 *status)
|
|
{
|
|
u8 s;
|
|
|
|
/* TODO:
|
|
* Add IBMACPI_FAN_RD_ACPI_FANS ? */
|
|
|
|
switch (fan_status_access_mode) {
|
|
case IBMACPI_FAN_RD_ACPI_GFAN:
|
|
/* 570, 600e/x, 770e, 770x */
|
|
|
|
if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
|
|
return -EIO;
|
|
|
|
if (likely(status))
|
|
*status = s & 0x07;
|
|
|
|
break;
|
|
|
|
case IBMACPI_FAN_RD_TPEC:
|
|
/* all except 570, 600e/x, 770e, 770x */
|
|
if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
|
|
return -EIO;
|
|
|
|
if (likely(status))
|
|
*status = s;
|
|
|
|
break;
|
|
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fan_exit(void)
|
|
{
|
|
cancel_delayed_work(&fan_watchdog_task);
|
|
flush_scheduled_work();
|
|
}
|
|
|
|
static int fan_get_speed(unsigned int *speed)
|
|
{
|
|
u8 hi, lo;
|
|
|
|
switch (fan_status_access_mode) {
|
|
case IBMACPI_FAN_RD_TPEC:
|
|
/* all except 570, 600e/x, 770e, 770x */
|
|
if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
|
|
!acpi_ec_read(fan_rpm_offset + 1, &hi)))
|
|
return -EIO;
|
|
|
|
if (likely(speed))
|
|
*speed = (hi << 8) | lo;
|
|
|
|
break;
|
|
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fan_watchdog_fire(struct work_struct *ignored)
|
|
{
|
|
printk(IBM_NOTICE "fan watchdog: enabling fan\n");
|
|
if (fan_set_enable()) {
|
|
printk(IBM_ERR "fan watchdog: error while enabling fan\n");
|
|
/* reschedule for later */
|
|
fan_watchdog_reset();
|
|
}
|
|
}
|
|
|
|
static void fan_watchdog_reset(void)
|
|
{
|
|
static int fan_watchdog_active = 0;
|
|
|
|
if (fan_watchdog_active)
|
|
cancel_delayed_work(&fan_watchdog_task);
|
|
|
|
if (fan_watchdog_maxinterval > 0) {
|
|
fan_watchdog_active = 1;
|
|
if (!schedule_delayed_work(&fan_watchdog_task,
|
|
msecs_to_jiffies(fan_watchdog_maxinterval
|
|
* 1000))) {
|
|
printk(IBM_ERR "failed to schedule the fan watchdog, "
|
|
"watchdog will not trigger\n");
|
|
}
|
|
} else
|
|
fan_watchdog_active = 0;
|
|
}
|
|
|
|
static int fan_set_level(int level)
|
|
{
|
|
switch (fan_control_access_mode) {
|
|
case IBMACPI_FAN_WR_ACPI_SFAN:
|
|
if (level >= 0 && level <= 7) {
|
|
if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
break;
|
|
|
|
case IBMACPI_FAN_WR_ACPI_FANS:
|
|
case IBMACPI_FAN_WR_TPEC:
|
|
if ((level != IBMACPI_FAN_EC_AUTO) &&
|
|
(level != IBMACPI_FAN_EC_DISENGAGED) &&
|
|
((level < 0) || (level > 7)))
|
|
return -EINVAL;
|
|
|
|
if (!acpi_ec_write(fan_status_offset, level))
|
|
return -EIO;
|
|
else
|
|
fan_control_status_known = 1;
|
|
break;
|
|
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int fan_set_enable(void)
|
|
{
|
|
u8 s;
|
|
int rc;
|
|
|
|
switch (fan_control_access_mode) {
|
|
case IBMACPI_FAN_WR_ACPI_FANS:
|
|
case IBMACPI_FAN_WR_TPEC:
|
|
if ((rc = fan_get_status(&s)) < 0)
|
|
return rc;
|
|
|
|
/* Don't go out of emergency fan mode */
|
|
if (s != 7)
|
|
s = IBMACPI_FAN_EC_AUTO;
|
|
|
|
if (!acpi_ec_write(fan_status_offset, s))
|
|
return -EIO;
|
|
else
|
|
fan_control_status_known = 1;
|
|
break;
|
|
|
|
case IBMACPI_FAN_WR_ACPI_SFAN:
|
|
if ((rc = fan_get_status(&s)) < 0)
|
|
return rc;
|
|
|
|
s &= 0x07;
|
|
|
|
/* Set fan to at least level 4 */
|
|
if (s < 4)
|
|
s = 4;
|
|
|
|
if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
|
|
return -EIO;
|
|
break;
|
|
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int fan_set_disable(void)
|
|
{
|
|
switch (fan_control_access_mode) {
|
|
case IBMACPI_FAN_WR_ACPI_FANS:
|
|
case IBMACPI_FAN_WR_TPEC:
|
|
if (!acpi_ec_write(fan_status_offset, 0x00))
|
|
return -EIO;
|
|
else
|
|
fan_control_status_known = 1;
|
|
break;
|
|
|
|
case IBMACPI_FAN_WR_ACPI_SFAN:
|
|
if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
|
|
return -EIO;
|
|
break;
|
|
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int fan_set_speed(int speed)
|
|
{
|
|
switch (fan_control_access_mode) {
|
|
case IBMACPI_FAN_WR_ACPI_FANS:
|
|
if (speed >= 0 && speed <= 65535) {
|
|
if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
|
|
speed, speed, speed))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
break;
|
|
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int fan_read(char *p)
|
|
{
|
|
int len = 0;
|
|
int rc;
|
|
u8 status;
|
|
unsigned int speed = 0;
|
|
|
|
switch (fan_status_access_mode) {
|
|
case IBMACPI_FAN_RD_ACPI_GFAN:
|
|
/* 570, 600e/x, 770e, 770x */
|
|
if ((rc = fan_get_status(&status)) < 0)
|
|
return rc;
|
|
|
|
len += sprintf(p + len, "status:\t\t%s\n"
|
|
"level:\t\t%d\n",
|
|
(status != 0) ? "enabled" : "disabled", status);
|
|
break;
|
|
|
|
case IBMACPI_FAN_RD_TPEC:
|
|
/* all except 570, 600e/x, 770e, 770x */
|
|
if ((rc = fan_get_status(&status)) < 0)
|
|
return rc;
|
|
|
|
if (unlikely(!fan_control_status_known)) {
|
|
if (status != fan_control_initial_status)
|
|
fan_control_status_known = 1;
|
|
else
|
|
/* Return most likely status. In fact, it
|
|
* might be the only possible status */
|
|
status = IBMACPI_FAN_EC_AUTO;
|
|
}
|
|
|
|
len += sprintf(p + len, "status:\t\t%s\n",
|
|
(status != 0) ? "enabled" : "disabled");
|
|
|
|
/* No ThinkPad boots on disengaged mode, we can safely
|
|
* assume the tachometer is online if fan control status
|
|
* was unknown */
|
|
if ((rc = fan_get_speed(&speed)) < 0)
|
|
return rc;
|
|
|
|
len += sprintf(p + len, "speed:\t\t%d\n", speed);
|
|
|
|
if (status & IBMACPI_FAN_EC_DISENGAGED)
|
|
/* Disengaged mode takes precedence */
|
|
len += sprintf(p + len, "level:\t\tdisengaged\n");
|
|
else if (status & IBMACPI_FAN_EC_AUTO)
|
|
len += sprintf(p + len, "level:\t\tauto\n");
|
|
else
|
|
len += sprintf(p + len, "level:\t\t%d\n", status);
|
|
break;
|
|
|
|
case IBMACPI_FAN_NONE:
|
|
default:
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
}
|
|
|
|
if (fan_control_commands & IBMACPI_FAN_CMD_LEVEL) {
|
|
len += sprintf(p + len, "commands:\tlevel <level>");
|
|
|
|
switch (fan_control_access_mode) {
|
|
case IBMACPI_FAN_WR_ACPI_SFAN:
|
|
len += sprintf(p + len, " (<level> is 0-7)\n");
|
|
break;
|
|
|
|
default:
|
|
len += sprintf(p + len, " (<level> is 0-7, "
|
|
"auto, disengaged)\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fan_control_commands & IBMACPI_FAN_CMD_ENABLE)
|
|
len += sprintf(p + len, "commands:\tenable, disable\n"
|
|
"commands:\twatchdog <timeout> (<timeout> is 0 (off), "
|
|
"1-120 (seconds))\n");
|
|
|
|
if (fan_control_commands & IBMACPI_FAN_CMD_SPEED)
|
|
len += sprintf(p + len, "commands:\tspeed <speed>"
|
|
" (<speed> is 0-65535)\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
static int fan_write_cmd_level(const char *cmd, int *rc)
|
|
{
|
|
int level;
|
|
|
|
if (strlencmp(cmd, "level auto") == 0)
|
|
level = IBMACPI_FAN_EC_AUTO;
|
|
else if (strlencmp(cmd, "level disengaged") == 0)
|
|
level = IBMACPI_FAN_EC_DISENGAGED;
|
|
else if (sscanf(cmd, "level %d", &level) != 1)
|
|
return 0;
|
|
|
|
if ((*rc = fan_set_level(level)) == -ENXIO)
|
|
printk(IBM_ERR "level command accepted for unsupported "
|
|
"access mode %d", fan_control_access_mode);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int fan_write_cmd_enable(const char *cmd, int *rc)
|
|
{
|
|
if (strlencmp(cmd, "enable") != 0)
|
|
return 0;
|
|
|
|
if ((*rc = fan_set_enable()) == -ENXIO)
|
|
printk(IBM_ERR "enable command accepted for unsupported "
|
|
"access mode %d", fan_control_access_mode);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int fan_write_cmd_disable(const char *cmd, int *rc)
|
|
{
|
|
if (strlencmp(cmd, "disable") != 0)
|
|
return 0;
|
|
|
|
if ((*rc = fan_set_disable()) == -ENXIO)
|
|
printk(IBM_ERR "disable command accepted for unsupported "
|
|
"access mode %d", fan_control_access_mode);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int fan_write_cmd_speed(const char *cmd, int *rc)
|
|
{
|
|
int speed;
|
|
|
|
/* TODO:
|
|
* Support speed <low> <medium> <high> ? */
|
|
|
|
if (sscanf(cmd, "speed %d", &speed) != 1)
|
|
return 0;
|
|
|
|
if ((*rc = fan_set_speed(speed)) == -ENXIO)
|
|
printk(IBM_ERR "speed command accepted for unsupported "
|
|
"access mode %d", fan_control_access_mode);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int fan_write_cmd_watchdog(const char *cmd, int *rc)
|
|
{
|
|
int interval;
|
|
|
|
if (sscanf(cmd, "watchdog %d", &interval) != 1)
|
|
return 0;
|
|
|
|
if (interval < 0 || interval > 120)
|
|
*rc = -EINVAL;
|
|
else
|
|
fan_watchdog_maxinterval = interval;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int fan_write(char *buf)
|
|
{
|
|
char *cmd;
|
|
int rc = 0;
|
|
|
|
while (!rc && (cmd = next_cmd(&buf))) {
|
|
if (!((fan_control_commands & IBMACPI_FAN_CMD_LEVEL) &&
|
|
fan_write_cmd_level(cmd, &rc)) &&
|
|
!((fan_control_commands & IBMACPI_FAN_CMD_ENABLE) &&
|
|
(fan_write_cmd_enable(cmd, &rc) ||
|
|
fan_write_cmd_disable(cmd, &rc) ||
|
|
fan_write_cmd_watchdog(cmd, &rc))) &&
|
|
!((fan_control_commands & IBMACPI_FAN_CMD_SPEED) &&
|
|
fan_write_cmd_speed(cmd, &rc))
|
|
)
|
|
rc = -EINVAL;
|
|
else if (!rc)
|
|
fan_watchdog_reset();
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/****************************************************************************
|
|
****************************************************************************
|
|
*
|
|
* Infrastructure
|
|
*
|
|
****************************************************************************
|
|
****************************************************************************/
|
|
|
|
/* /proc support */
|
|
static struct proc_dir_entry *proc_dir = NULL;
|
|
|
|
/* Subdriver registry */
|
|
static struct ibm_struct ibms[] = {
|
|
{
|
|
.name = "driver",
|
|
.init = ibm_acpi_driver_init,
|
|
.read = ibm_acpi_driver_read,
|
|
},
|
|
{
|
|
.name = "hotkey",
|
|
.hid = IBM_HKEY_HID,
|
|
.init = hotkey_init,
|
|
.read = hotkey_read,
|
|
.write = hotkey_write,
|
|
.exit = hotkey_exit,
|
|
.notify = hotkey_notify,
|
|
.handle = &hkey_handle,
|
|
.type = ACPI_DEVICE_NOTIFY,
|
|
},
|
|
{
|
|
.name = "bluetooth",
|
|
.init = bluetooth_init,
|
|
.read = bluetooth_read,
|
|
.write = bluetooth_write,
|
|
},
|
|
{
|
|
.name = "wan",
|
|
.init = wan_init,
|
|
.read = wan_read,
|
|
.write = wan_write,
|
|
.experimental = 1,
|
|
},
|
|
{
|
|
.name = "video",
|
|
.init = video_init,
|
|
.read = video_read,
|
|
.write = video_write,
|
|
.exit = video_exit,
|
|
},
|
|
{
|
|
.name = "light",
|
|
.init = light_init,
|
|
.read = light_read,
|
|
.write = light_write,
|
|
},
|
|
#ifdef CONFIG_ACPI_IBM_DOCK
|
|
{
|
|
.name = "dock",
|
|
.read = dock_read,
|
|
.write = dock_write,
|
|
.notify = dock_notify,
|
|
.handle = &dock_handle,
|
|
.type = ACPI_SYSTEM_NOTIFY,
|
|
},
|
|
{
|
|
.name = "dock",
|
|
.hid = IBM_PCI_HID,
|
|
.notify = dock_notify,
|
|
.handle = &pci_handle,
|
|
.type = ACPI_SYSTEM_NOTIFY,
|
|
},
|
|
#endif
|
|
#ifdef CONFIG_ACPI_IBM_BAY
|
|
{
|
|
.name = "bay",
|
|
.init = bay_init,
|
|
.read = bay_read,
|
|
.write = bay_write,
|
|
.notify = bay_notify,
|
|
.handle = &bay_handle,
|
|
.type = ACPI_SYSTEM_NOTIFY,
|
|
},
|
|
#endif /* CONFIG_ACPI_IBM_BAY */
|
|
{
|
|
.name = "cmos",
|
|
.read = cmos_read,
|
|
.write = cmos_write,
|
|
},
|
|
{
|
|
.name = "led",
|
|
.init = led_init,
|
|
.read = led_read,
|
|
.write = led_write,
|
|
},
|
|
{
|
|
.name = "beep",
|
|
.read = beep_read,
|
|
.write = beep_write,
|
|
},
|
|
{
|
|
.name = "thermal",
|
|
.init = thermal_init,
|
|
.read = thermal_read,
|
|
},
|
|
{
|
|
.name = "ecdump",
|
|
.read = ecdump_read,
|
|
.write = ecdump_write,
|
|
.experimental = 1,
|
|
},
|
|
{
|
|
.name = "brightness",
|
|
.read = brightness_read,
|
|
.write = brightness_write,
|
|
.init = brightness_init,
|
|
.exit = brightness_exit,
|
|
},
|
|
{
|
|
.name = "volume",
|
|
.read = volume_read,
|
|
.write = volume_write,
|
|
},
|
|
{
|
|
.name = "fan",
|
|
.read = fan_read,
|
|
.write = fan_write,
|
|
.init = fan_init,
|
|
.exit = fan_exit,
|
|
.experimental = 1,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* Module and infrastructure proble, init and exit handling
|
|
*/
|
|
|
|
static int __init ibm_init(struct ibm_struct *ibm)
|
|
{
|
|
int ret;
|
|
struct proc_dir_entry *entry;
|
|
|
|
if (ibm->experimental && !experimental)
|
|
return 0;
|
|
|
|
if (ibm->hid) {
|
|
ret = register_ibmacpi_subdriver(ibm);
|
|
if (ret < 0)
|
|
return ret;
|
|
ibm->driver_registered = 1;
|
|
}
|
|
|
|
if (ibm->init) {
|
|
ret = ibm->init();
|
|
if (ret != 0)
|
|
return ret;
|
|
ibm->init_called = 1;
|
|
}
|
|
|
|
if (ibm->read) {
|
|
entry = create_proc_entry(ibm->name,
|
|
S_IFREG | S_IRUGO | S_IWUSR,
|
|
proc_dir);
|
|
if (!entry) {
|
|
printk(IBM_ERR "unable to create proc entry %s\n",
|
|
ibm->name);
|
|
return -ENODEV;
|
|
}
|
|
entry->owner = THIS_MODULE;
|
|
entry->data = ibm;
|
|
entry->read_proc = &dispatch_read;
|
|
if (ibm->write)
|
|
entry->write_proc = &dispatch_write;
|
|
ibm->proc_created = 1;
|
|
}
|
|
|
|
if (ibm->notify) {
|
|
ret = setup_notify(ibm);
|
|
if (ret == -ENODEV) {
|
|
printk(IBM_NOTICE "disabling subdriver %s\n",
|
|
ibm->name);
|
|
ibm_exit(ibm);
|
|
return 0;
|
|
}
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ibm_exit(struct ibm_struct *ibm)
|
|
{
|
|
if (ibm->notify_installed)
|
|
acpi_remove_notify_handler(*ibm->handle, ibm->type,
|
|
dispatch_notify);
|
|
|
|
if (ibm->proc_created)
|
|
remove_proc_entry(ibm->name, proc_dir);
|
|
|
|
if (ibm->init_called && ibm->exit)
|
|
ibm->exit();
|
|
|
|
if (ibm->driver_registered) {
|
|
acpi_bus_unregister_driver(ibm->driver);
|
|
kfree(ibm->driver);
|
|
}
|
|
}
|
|
|
|
/* Probing */
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static char *ibm_thinkpad_ec_found = NULL;
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static char* __init check_dmi_for_ec(void)
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{
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struct dmi_device *dev = NULL;
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char ec_fw_string[18];
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/*
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* ThinkPad T23 or newer, A31 or newer, R50e or newer,
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* X32 or newer, all Z series; Some models must have an
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* up-to-date BIOS or they will not be detected.
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*
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* See http://thinkwiki.org/wiki/List_of_DMI_IDs
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*/
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while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
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if (sscanf(dev->name,
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"IBM ThinkPad Embedded Controller -[%17c",
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ec_fw_string) == 1) {
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ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
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ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
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return kstrdup(ec_fw_string, GFP_KERNEL);
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}
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}
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return NULL;
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}
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/* Module init, exit, parameters */
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static int __init set_ibm_param(const char *val, struct kernel_param *kp)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(ibms); i++)
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if (strcmp(ibms[i].name, kp->name) == 0 && ibms[i].write) {
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if (strlen(val) > sizeof(ibms[i].param) - 2)
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return -ENOSPC;
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strcpy(ibms[i].param, val);
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strcat(ibms[i].param, ",");
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return 0;
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}
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return -EINVAL;
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}
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|
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static int experimental;
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module_param(experimental, int, 0);
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#define IBM_PARAM(feature) \
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module_param_call(feature, set_ibm_param, NULL, NULL, 0)
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IBM_PARAM(hotkey);
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|
IBM_PARAM(bluetooth);
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|
IBM_PARAM(video);
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|
IBM_PARAM(light);
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|
#ifdef CONFIG_ACPI_IBM_DOCK
|
|
IBM_PARAM(dock);
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|
#endif
|
|
#ifdef CONFIG_ACPI_IBM_BAY
|
|
IBM_PARAM(bay);
|
|
#endif /* CONFIG_ACPI_IBM_BAY */
|
|
IBM_PARAM(cmos);
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|
IBM_PARAM(led);
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|
IBM_PARAM(beep);
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|
IBM_PARAM(ecdump);
|
|
IBM_PARAM(brightness);
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|
IBM_PARAM(volume);
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|
IBM_PARAM(fan);
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|
|
|
static int __init acpi_ibm_init(void)
|
|
{
|
|
int ret, i;
|
|
|
|
if (acpi_disabled)
|
|
return -ENODEV;
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|
|
/* ec is required because many other handles are relative to it */
|
|
IBM_HANDLE_INIT(ec);
|
|
if (!ec_handle) {
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|
printk(IBM_ERR "ec object not found\n");
|
|
return -ENODEV;
|
|
}
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|
|
/* Models with newer firmware report the EC in DMI */
|
|
ibm_thinkpad_ec_found = check_dmi_for_ec();
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|
|
|
/* these handles are not required */
|
|
IBM_HANDLE_INIT(vid);
|
|
IBM_HANDLE_INIT(vid2);
|
|
IBM_HANDLE_INIT(ledb);
|
|
IBM_HANDLE_INIT(led);
|
|
IBM_HANDLE_INIT(hkey);
|
|
IBM_HANDLE_INIT(lght);
|
|
IBM_HANDLE_INIT(cmos);
|
|
#ifdef CONFIG_ACPI_IBM_DOCK
|
|
IBM_HANDLE_INIT(dock);
|
|
#endif
|
|
IBM_HANDLE_INIT(pci);
|
|
#ifdef CONFIG_ACPI_IBM_BAY
|
|
IBM_HANDLE_INIT(bay);
|
|
if (bay_handle)
|
|
IBM_HANDLE_INIT(bay_ej);
|
|
IBM_HANDLE_INIT(bay2);
|
|
if (bay2_handle)
|
|
IBM_HANDLE_INIT(bay2_ej);
|
|
#endif /* CONFIG_ACPI_IBM_BAY */
|
|
IBM_HANDLE_INIT(beep);
|
|
IBM_HANDLE_INIT(ecrd);
|
|
IBM_HANDLE_INIT(ecwr);
|
|
IBM_HANDLE_INIT(fans);
|
|
IBM_HANDLE_INIT(gfan);
|
|
IBM_HANDLE_INIT(sfan);
|
|
|
|
proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
|
|
if (!proc_dir) {
|
|
printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
|
|
acpi_ibm_exit();
|
|
return -ENODEV;
|
|
}
|
|
proc_dir->owner = THIS_MODULE;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ibms); i++) {
|
|
ret = ibm_init(&ibms[i]);
|
|
if (ret >= 0 && *ibms[i].param)
|
|
ret = ibms[i].write(ibms[i].param);
|
|
if (ret < 0) {
|
|
acpi_ibm_exit();
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void acpi_ibm_exit(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--)
|
|
ibm_exit(&ibms[i]);
|
|
|
|
if (proc_dir)
|
|
remove_proc_entry(IBM_DIR, acpi_root_dir);
|
|
|
|
if (ibm_thinkpad_ec_found)
|
|
kfree(ibm_thinkpad_ec_found);
|
|
}
|
|
|
|
module_init(acpi_ibm_init);
|
|
module_exit(acpi_ibm_exit);
|