1237 lines
27 KiB
C
1237 lines
27 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 Borislav Deianov
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Changelog:
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*
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* 2004-08-09 0.1 initial release, support for X series
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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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* 2004-08-17 0.3 support for R40
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* lcd off, brightness control
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* thinklight on/off
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* 2004-09-16 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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* 2004-10-18 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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* 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
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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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* 2004-11-08 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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*/
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#define IBM_VERSION "0.8"
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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#include <asm/uaccess.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acnamesp.h>
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#define IBM_NAME "ibm"
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#define IBM_DESC "IBM ThinkPad ACPI Extras"
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#define IBM_FILE "ibm_acpi"
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#define IBM_URL "http://ibm-acpi.sf.net/"
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#define IBM_DIR IBM_NAME
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#define IBM_LOG IBM_FILE ": "
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#define IBM_ERR KERN_ERR IBM_LOG
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#define IBM_NOTICE KERN_NOTICE IBM_LOG
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#define IBM_INFO KERN_INFO IBM_LOG
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#define IBM_DEBUG KERN_DEBUG IBM_LOG
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#define IBM_MAX_ACPI_ARGS 3
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#define __unused __attribute__ ((unused))
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static int experimental;
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module_param(experimental, int, 0);
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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##_paths[] = { paths }
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IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC", /* A21e, A22p, T20, T21, X20 */
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"\\_SB.PCI0.LPC.EC", /* all others */
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);
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IBM_HANDLE(vid, root, "\\_SB.PCI0.VID", /* A21e, G40, X30, X40 */
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"\\_SB.PCI0.AGP.VID", /* all others */
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);
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IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50p, R51, T4x, X31, X40 */
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"\\CMOS", /* A3x, G40, R32, T23, T30, X22, X24, X30 */
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"\\CMS", /* R40, R40e */
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); /* A21e, A22p, T20, T21, X20 */
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IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
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"\\_SB.PCI0.DOCK", /* A22p, T20, T21, X20 */
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"\\_SB.PCI0.PCI1.DOCK", /* all others */
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); /* A21e, G40, R32, R40, R40e */
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IBM_HANDLE(bay, root, "\\_SB.PCI0.IDE0.SCND.MSTR"); /* all except A21e */
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IBM_HANDLE(bayej, root, "\\_SB.PCI0.IDE0.SCND.MSTR._EJ0"); /* all except A2x, A3x */
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IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A22p, T20, T21, X20 */
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IBM_HANDLE(hkey, ec, "HKEY"); /* all */
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IBM_HANDLE(led, ec, "LED"); /* all except A21e, A22p, T20, T21, X20 */
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IBM_HANDLE(sysl, ec, "SYSL"); /* A21e, A22p, T20, T21, X20 */
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IBM_HANDLE(bled, ec, "BLED"); /* A22p, T20, T21, X20 */
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IBM_HANDLE(beep, ec, "BEEP"); /* all models */
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struct ibm_struct {
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char *name;
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char *hid;
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struct acpi_driver *driver;
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int (*init) (struct ibm_struct *);
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int (*read) (struct ibm_struct *, char *);
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int (*write) (struct ibm_struct *, char *);
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void (*exit) (struct ibm_struct *);
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void (*notify) (struct ibm_struct *, u32);
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acpi_handle *handle;
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int type;
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struct acpi_device *device;
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int driver_registered;
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int proc_created;
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int init_called;
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int notify_installed;
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int supported;
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union {
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struct {
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int status;
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int mask;
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} hotkey;
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struct {
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int autoswitch;
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} video;
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} state;
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int experimental;
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};
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static struct proc_dir_entry *proc_dir = NULL;
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#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
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#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
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#define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
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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;
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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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result.length = sizeof(out_obj);
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result.pointer = &out_obj;
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status = acpi_evaluate_object(handle, method, ¶ms, &result);
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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 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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static int driver_init(struct ibm_struct *ibm)
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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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return 0;
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}
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static int driver_read(struct ibm_struct *ibm, 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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static int hotkey_get(struct ibm_struct *ibm, 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 -EIO;
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if (ibm->supported) {
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if (!acpi_evalf(hkey_handle, mask, "DHKN", "qd"))
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return -EIO;
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} else {
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*mask = ibm->state.hotkey.mask;
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}
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return 0;
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}
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static int hotkey_set(struct ibm_struct *ibm, int status, int mask)
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{
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int i;
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if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
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return -EIO;
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if (!ibm->supported)
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return 0;
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for (i = 0; i < 32; i++) {
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int bit = ((1 << i) & mask) != 0;
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if (!acpi_evalf(hkey_handle, NULL, "MHKM", "vdd", i + 1, bit))
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return -EIO;
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}
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return 0;
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}
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static int hotkey_init(struct ibm_struct *ibm)
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{
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int ret;
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ibm->supported = 1;
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ret = hotkey_get(ibm,
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&ibm->state.hotkey.status, &ibm->state.hotkey.mask);
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if (ret < 0) {
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/* mask not supported on A21e, A22p, T20, T21, X20, X22, X24 */
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ibm->supported = 0;
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ret = hotkey_get(ibm,
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&ibm->state.hotkey.status,
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&ibm->state.hotkey.mask);
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}
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return ret;
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}
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static int hotkey_read(struct ibm_struct *ibm, char *p)
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{
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int status, mask;
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int len = 0;
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if (hotkey_get(ibm, &status, &mask) < 0)
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return -EIO;
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len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
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if (ibm->supported) {
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len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
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len += sprintf(p + len,
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"commands:\tenable, disable, reset, <mask>\n");
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} else {
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len += sprintf(p + len, "mask:\t\tnot supported\n");
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len += sprintf(p + len, "commands:\tenable, disable, reset\n");
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}
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return len;
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}
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static int hotkey_write(struct ibm_struct *ibm, char *buf)
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{
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int status, mask;
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char *cmd;
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int do_cmd = 0;
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if (hotkey_get(ibm, &status, &mask) < 0)
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return -ENODEV;
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while ((cmd = next_cmd(&buf))) {
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if (strlencmp(cmd, "enable") == 0) {
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status = 1;
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} else if (strlencmp(cmd, "disable") == 0) {
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status = 0;
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} else if (strlencmp(cmd, "reset") == 0) {
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status = ibm->state.hotkey.status;
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mask = ibm->state.hotkey.mask;
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} else if (sscanf(cmd, "0x%x", &mask) == 1) {
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/* mask set */
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} else if (sscanf(cmd, "%x", &mask) == 1) {
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/* mask set */
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} else
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return -EINVAL;
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do_cmd = 1;
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}
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if (do_cmd && hotkey_set(ibm, status, mask) < 0)
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return -EIO;
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return 0;
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}
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static void hotkey_exit(struct ibm_struct *ibm)
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{
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hotkey_set(ibm, ibm->state.hotkey.status, ibm->state.hotkey.mask);
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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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static int bluetooth_init(struct ibm_struct *ibm)
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{
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/* bluetooth not supported on A21e, G40, T20, T21, X20 */
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ibm->supported = acpi_evalf(hkey_handle, NULL, "GBDC", "qv");
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return 0;
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}
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static int bluetooth_status(struct ibm_struct *ibm)
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{
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int status;
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if (!ibm->supported || !acpi_evalf(hkey_handle, &status, "GBDC", "d"))
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status = 0;
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return status;
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}
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static int bluetooth_read(struct ibm_struct *ibm, char *p)
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{
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int len = 0;
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int status = bluetooth_status(ibm);
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if (!ibm->supported)
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len += sprintf(p + len, "status:\t\tnot supported\n");
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else if (!(status & 1))
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len += sprintf(p + len, "status:\t\tnot installed\n");
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else {
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len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
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len += sprintf(p + len, "commands:\tenable, disable\n");
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}
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return len;
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}
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static int bluetooth_write(struct ibm_struct *ibm, char *buf)
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{
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int status = bluetooth_status(ibm);
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char *cmd;
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int do_cmd = 0;
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if (!ibm->supported)
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return -EINVAL;
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while ((cmd = next_cmd(&buf))) {
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if (strlencmp(cmd, "enable") == 0) {
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status |= 2;
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} else if (strlencmp(cmd, "disable") == 0) {
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status &= ~2;
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} else
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return -EINVAL;
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do_cmd = 1;
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}
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if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
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return -EIO;
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return 0;
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}
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static int video_init(struct ibm_struct *ibm)
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{
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if (!acpi_evalf(vid_handle, &ibm->state.video.autoswitch, "^VDEE", "d"))
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return -ENODEV;
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return 0;
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}
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static int video_status(struct ibm_struct *ibm)
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{
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int status = 0;
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int i;
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acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
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if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
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status |= 0x02 * i;
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acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0);
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if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
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status |= 0x01 * i;
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if (acpi_evalf(NULL, &i, "\\VCDD", "d"))
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status |= 0x08 * i;
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if (acpi_evalf(vid_handle, &i, "^VDEE", "d"))
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status |= 0x10 * (i & 1);
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return status;
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}
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static int video_read(struct ibm_struct *ibm, char *p)
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{
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int status = video_status(ibm);
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int len = 0;
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len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
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len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
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len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
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len += sprintf(p + len, "auto:\t\t%s\n", enabled(status, 4));
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len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable, "
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"crt_enable, crt_disable\n");
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len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable, "
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"auto_enable, auto_disable\n");
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len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
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return len;
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}
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static int video_write(struct ibm_struct *ibm, char *buf)
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{
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char *cmd;
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int enable, disable, status;
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enable = disable = 0;
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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 (strlencmp(cmd, "dvi_enable") == 0) {
|
|
enable |= 0x08;
|
|
} else if (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) {
|
|
int autoswitch;
|
|
if (!acpi_evalf(vid_handle, &autoswitch, "^VDEE", "d"))
|
|
return -EIO;
|
|
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
|
|
return -EIO;
|
|
if (!acpi_evalf(vid_handle, NULL, "VSWT", "v"))
|
|
return -EIO;
|
|
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd",
|
|
autoswitch))
|
|
return -EIO;
|
|
} else if (strlencmp(cmd, "expand_toggle") == 0) {
|
|
if (!acpi_evalf(NULL, NULL, "\\VEXP", "v"))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (enable || disable) {
|
|
status = (video_status(ibm) & 0x0f & ~disable) | enable;
|
|
if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80))
|
|
return -EIO;
|
|
if (!acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void video_exit(struct ibm_struct *ibm)
|
|
{
|
|
acpi_evalf(vid_handle, NULL, "_DOS", "vd", ibm->state.video.autoswitch);
|
|
}
|
|
|
|
static int light_init(struct ibm_struct *ibm)
|
|
{
|
|
/* kblt not supported on G40, R32, X20 */
|
|
ibm->supported = acpi_evalf(ec_handle, NULL, "KBLT", "qv");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int light_read(struct ibm_struct *ibm, char *p)
|
|
{
|
|
int len = 0;
|
|
int status = 0;
|
|
|
|
if (ibm->supported) {
|
|
if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
|
|
return -EIO;
|
|
len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
|
|
} else
|
|
len += sprintf(p + len, "status:\t\tunknown\n");
|
|
|
|
len += sprintf(p + len, "commands:\ton, off\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
static int light_write(struct ibm_struct *ibm, char *buf)
|
|
{
|
|
int cmos_cmd, lght_cmd;
|
|
char *cmd;
|
|
int success;
|
|
|
|
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;
|
|
}
|
|
|
|
static int _sta(acpi_handle handle)
|
|
{
|
|
int status;
|
|
|
|
if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
|
|
status = 0;
|
|
|
|
return status;
|
|
}
|
|
|
|
#define dock_docked() (_sta(dock_handle) & 1)
|
|
|
|
static int dock_read(struct ibm_struct *ibm, 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(struct ibm_struct *ibm, char *buf)
|
|
{
|
|
char *cmd;
|
|
|
|
if (!dock_docked())
|
|
return -EINVAL;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "undock") == 0) {
|
|
if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0))
|
|
return -EIO;
|
|
if (!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;
|
|
}
|
|
|
|
static void dock_notify(struct ibm_struct *ibm, u32 event)
|
|
{
|
|
int docked = dock_docked();
|
|
|
|
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 */
|
|
}
|
|
}
|
|
|
|
#define bay_occupied() (_sta(bay_handle) & 1)
|
|
|
|
static int bay_init(struct ibm_struct *ibm)
|
|
{
|
|
/* bay not supported on A21e, A22p, A31, A31p, G40, R32, R40e */
|
|
ibm->supported = bay_handle && bayej_handle &&
|
|
acpi_evalf(bay_handle, NULL, "_STA", "qv");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bay_read(struct ibm_struct *ibm, char *p)
|
|
{
|
|
int len = 0;
|
|
int occupied = bay_occupied();
|
|
|
|
if (!ibm->supported)
|
|
len += sprintf(p + len, "status:\t\tnot supported\n");
|
|
else if (!occupied)
|
|
len += sprintf(p + len, "status:\t\tunoccupied\n");
|
|
else {
|
|
len += sprintf(p + len, "status:\t\toccupied\n");
|
|
len += sprintf(p + len, "commands:\teject\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int bay_write(struct ibm_struct *ibm, char *buf)
|
|
{
|
|
char *cmd;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (strlencmp(cmd, "eject") == 0) {
|
|
if (!ibm->supported ||
|
|
!acpi_evalf(bay_handle, NULL, "_EJ0", "vd", 1))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bay_notify(struct ibm_struct *ibm, u32 event)
|
|
{
|
|
acpi_bus_generate_event(ibm->device, event, 0);
|
|
}
|
|
|
|
static int cmos_read(struct ibm_struct *ibm, char *p)
|
|
{
|
|
int len = 0;
|
|
|
|
/* cmos not supported on A21e, A22p, T20, T21, X20 */
|
|
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<int>\n");
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int cmos_write(struct ibm_struct *ibm, 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 set */
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int led_read(struct ibm_struct *ibm, char *p)
|
|
{
|
|
int len = 0;
|
|
|
|
len += sprintf(p + len, "commands:\t"
|
|
"<int> on, <int> off, <int> blink\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
static int led_write(struct ibm_struct *ibm, char *buf)
|
|
{
|
|
char *cmd;
|
|
unsigned int led;
|
|
int led_cmd, sysl_cmd, bled_a, bled_b;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (sscanf(cmd, "%u", &led) != 1)
|
|
return -EINVAL;
|
|
|
|
if (strstr(cmd, "blink")) {
|
|
led_cmd = 0xc0;
|
|
sysl_cmd = 2;
|
|
bled_a = 2;
|
|
bled_b = 1;
|
|
} else if (strstr(cmd, "on")) {
|
|
led_cmd = 0x80;
|
|
sysl_cmd = 1;
|
|
bled_a = 2;
|
|
bled_b = 0;
|
|
} else if (strstr(cmd, "off")) {
|
|
led_cmd = sysl_cmd = bled_a = bled_b = 0;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (led_handle) {
|
|
if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
|
|
led, led_cmd))
|
|
return -EIO;
|
|
} else if (led < 2) {
|
|
if (acpi_evalf(sysl_handle, NULL, NULL, "vdd",
|
|
led, sysl_cmd))
|
|
return -EIO;
|
|
} else if (led == 2 && bled_handle) {
|
|
if (acpi_evalf(bled_handle, NULL, NULL, "vdd",
|
|
bled_a, bled_b))
|
|
return -EIO;
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int beep_read(struct ibm_struct *ibm, char *p)
|
|
{
|
|
int len = 0;
|
|
|
|
len += sprintf(p + len, "commands:\t<int>\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
static int beep_write(struct ibm_struct *ibm, char *buf)
|
|
{
|
|
char *cmd;
|
|
int beep_cmd;
|
|
|
|
while ((cmd = next_cmd(&buf))) {
|
|
if (sscanf(cmd, "%u", &beep_cmd) == 1) {
|
|
/* beep_cmd set */
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (!acpi_evalf(beep_handle, NULL, NULL, "vd", beep_cmd))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ibm_struct ibms[] = {
|
|
{
|
|
.name = "driver",
|
|
.init = driver_init,
|
|
.read = driver_read,
|
|
},
|
|
{
|
|
.name = "hotkey",
|
|
.hid = "IBM0068",
|
|
.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 = "video",
|
|
.init = video_init,
|
|
.read = video_read,
|
|
.write = video_write,
|
|
.exit = video_exit,
|
|
},
|
|
{
|
|
.name = "light",
|
|
.init = light_init,
|
|
.read = light_read,
|
|
.write = light_write,
|
|
},
|
|
{
|
|
.name = "dock",
|
|
.read = dock_read,
|
|
.write = dock_write,
|
|
.notify = dock_notify,
|
|
.handle = &dock_handle,
|
|
.type = ACPI_SYSTEM_NOTIFY,
|
|
},
|
|
{
|
|
.name = "bay",
|
|
.init = bay_init,
|
|
.read = bay_read,
|
|
.write = bay_write,
|
|
.notify = bay_notify,
|
|
.handle = &bay_handle,
|
|
.type = ACPI_SYSTEM_NOTIFY,
|
|
},
|
|
{
|
|
.name = "cmos",
|
|
.read = cmos_read,
|
|
.write = cmos_write,
|
|
.experimental = 1,
|
|
},
|
|
{
|
|
.name = "led",
|
|
.read = led_read,
|
|
.write = led_write,
|
|
.experimental = 1,
|
|
},
|
|
{
|
|
.name = "beep",
|
|
.read = beep_read,
|
|
.write = beep_write,
|
|
.experimental = 1,
|
|
},
|
|
};
|
|
|
|
#define NUM_IBMS (sizeof(ibms)/sizeof(ibms[0]))
|
|
|
|
static int dispatch_read(char *page, char **start, off_t off, int count,
|
|
int *eof, void *data)
|
|
{
|
|
struct ibm_struct *ibm = (struct ibm_struct *)data;
|
|
int len;
|
|
|
|
if (!ibm || !ibm->read)
|
|
return -EINVAL;
|
|
|
|
len = ibm->read(ibm, page);
|
|
if (len < 0)
|
|
return len;
|
|
|
|
if (len <= off + count)
|
|
*eof = 1;
|
|
*start = page + off;
|
|
len -= off;
|
|
if (len > count)
|
|
len = count;
|
|
if (len < 0)
|
|
len = 0;
|
|
|
|
return len;
|
|
}
|
|
|
|
static int dispatch_write(struct file *file, const char __user * userbuf,
|
|
unsigned long count, void *data)
|
|
{
|
|
struct ibm_struct *ibm = (struct ibm_struct *)data;
|
|
char *kernbuf;
|
|
int ret;
|
|
|
|
if (!ibm || !ibm->write)
|
|
return -EINVAL;
|
|
|
|
kernbuf = kmalloc(count + 2, GFP_KERNEL);
|
|
if (!kernbuf)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(kernbuf, userbuf, count)) {
|
|
kfree(kernbuf);
|
|
return -EFAULT;
|
|
}
|
|
|
|
kernbuf[count] = 0;
|
|
strcat(kernbuf, ",");
|
|
ret = ibm->write(ibm, kernbuf);
|
|
if (ret == 0)
|
|
ret = count;
|
|
|
|
kfree(kernbuf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void dispatch_notify(acpi_handle handle, u32 event, void *data)
|
|
{
|
|
struct ibm_struct *ibm = (struct ibm_struct *)data;
|
|
|
|
if (!ibm || !ibm->notify)
|
|
return;
|
|
|
|
ibm->notify(ibm, event);
|
|
}
|
|
|
|
static int setup_notify(struct ibm_struct *ibm)
|
|
{
|
|
acpi_status status;
|
|
int ret;
|
|
|
|
if (!*ibm->handle)
|
|
return 0;
|
|
|
|
ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
|
|
if (ret < 0) {
|
|
printk(IBM_ERR "%s device not present\n", ibm->name);
|
|
return 0;
|
|
}
|
|
|
|
acpi_driver_data(ibm->device) = ibm;
|
|
sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name);
|
|
|
|
status = acpi_install_notify_handler(*ibm->handle, ibm->type,
|
|
dispatch_notify, ibm);
|
|
if (ACPI_FAILURE(status)) {
|
|
printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
|
|
ibm->name, status);
|
|
return -ENODEV;
|
|
}
|
|
|
|
ibm->notify_installed = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ibmacpi_device_add(struct acpi_device *device)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int register_driver(struct ibm_struct *ibm)
|
|
{
|
|
int ret;
|
|
|
|
ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL);
|
|
if (!ibm->driver) {
|
|
printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
|
|
return -1;
|
|
}
|
|
|
|
memset(ibm->driver, 0, sizeof(struct acpi_driver));
|
|
sprintf(ibm->driver->name, "%s/%s", IBM_NAME, ibm->name);
|
|
ibm->driver->ids = ibm->hid;
|
|
ibm->driver->ops.add = &ibmacpi_device_add;
|
|
|
|
ret = acpi_bus_register_driver(ibm->driver);
|
|
if (ret < 0) {
|
|
printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
|
|
ibm->hid, ret);
|
|
kfree(ibm->driver);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ibm_init(struct ibm_struct *ibm)
|
|
{
|
|
int ret;
|
|
struct proc_dir_entry *entry;
|
|
|
|
if (ibm->experimental && !experimental)
|
|
return 0;
|
|
|
|
if (ibm->hid) {
|
|
ret = register_driver(ibm);
|
|
if (ret < 0)
|
|
return ret;
|
|
ibm->driver_registered = 1;
|
|
}
|
|
|
|
if (ibm->init) {
|
|
ret = ibm->init(ibm);
|
|
if (ret != 0)
|
|
return ret;
|
|
ibm->init_called = 1;
|
|
}
|
|
|
|
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;
|
|
ibm->proc_created = 1;
|
|
|
|
entry->data = ibm;
|
|
if (ibm->read)
|
|
entry->read_proc = &dispatch_read;
|
|
if (ibm->write)
|
|
entry->write_proc = &dispatch_write;
|
|
|
|
if (ibm->notify) {
|
|
ret = setup_notify(ibm);
|
|
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(ibm);
|
|
|
|
if (ibm->driver_registered) {
|
|
acpi_bus_unregister_driver(ibm->driver);
|
|
kfree(ibm->driver);
|
|
}
|
|
}
|
|
|
|
static int ibm_handle_init(char *name,
|
|
acpi_handle * handle, acpi_handle parent,
|
|
char **paths, int num_paths, int required)
|
|
{
|
|
int i;
|
|
acpi_status status;
|
|
|
|
for (i = 0; i < num_paths; i++) {
|
|
status = acpi_get_handle(parent, paths[i], handle);
|
|
if (ACPI_SUCCESS(status))
|
|
return 0;
|
|
}
|
|
|
|
*handle = NULL;
|
|
|
|
if (required) {
|
|
printk(IBM_ERR "%s object not found\n", name);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define IBM_HANDLE_INIT(object, required) \
|
|
ibm_handle_init(#object, &object##_handle, *object##_parent, \
|
|
object##_paths, sizeof(object##_paths)/sizeof(char*), required)
|
|
|
|
static int set_ibm_param(const char *val, struct kernel_param *kp)
|
|
{
|
|
unsigned int i;
|
|
char arg_with_comma[32];
|
|
|
|
if (strlen(val) > 30)
|
|
return -ENOSPC;
|
|
|
|
strcpy(arg_with_comma, val);
|
|
strcat(arg_with_comma, ",");
|
|
|
|
for (i = 0; i < NUM_IBMS; i++)
|
|
if (strcmp(ibms[i].name, kp->name) == 0)
|
|
return ibms[i].write(&ibms[i], arg_with_comma);
|
|
BUG();
|
|
return -EINVAL;
|
|
}
|
|
|
|
#define IBM_PARAM(feature) \
|
|
module_param_call(feature, set_ibm_param, NULL, NULL, 0)
|
|
|
|
static void acpi_ibm_exit(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = NUM_IBMS - 1; i >= 0; i--)
|
|
ibm_exit(&ibms[i]);
|
|
|
|
remove_proc_entry(IBM_DIR, acpi_root_dir);
|
|
}
|
|
|
|
static int __init acpi_ibm_init(void)
|
|
{
|
|
int ret, i;
|
|
|
|
if (acpi_disabled)
|
|
return -ENODEV;
|
|
|
|
if (!acpi_specific_hotkey_enabled) {
|
|
printk(IBM_ERR "Using generic hotkey driver\n");
|
|
return -ENODEV;
|
|
}
|
|
/* these handles are required */
|
|
if (IBM_HANDLE_INIT(ec, 1) < 0 ||
|
|
IBM_HANDLE_INIT(hkey, 1) < 0 ||
|
|
IBM_HANDLE_INIT(vid, 1) < 0 || IBM_HANDLE_INIT(beep, 1) < 0)
|
|
return -ENODEV;
|
|
|
|
/* these handles have alternatives */
|
|
IBM_HANDLE_INIT(lght, 0);
|
|
if (IBM_HANDLE_INIT(cmos, !lght_handle) < 0)
|
|
return -ENODEV;
|
|
IBM_HANDLE_INIT(sysl, 0);
|
|
if (IBM_HANDLE_INIT(led, !sysl_handle) < 0)
|
|
return -ENODEV;
|
|
|
|
/* these handles are not required */
|
|
IBM_HANDLE_INIT(dock, 0);
|
|
IBM_HANDLE_INIT(bay, 0);
|
|
IBM_HANDLE_INIT(bayej, 0);
|
|
IBM_HANDLE_INIT(bled, 0);
|
|
|
|
proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
|
|
if (!proc_dir) {
|
|
printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
|
|
return -ENODEV;
|
|
}
|
|
proc_dir->owner = THIS_MODULE;
|
|
|
|
for (i = 0; i < NUM_IBMS; i++) {
|
|
ret = ibm_init(&ibms[i]);
|
|
if (ret < 0) {
|
|
acpi_ibm_exit();
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_init(acpi_ibm_init);
|
|
module_exit(acpi_ibm_exit);
|
|
|
|
MODULE_AUTHOR("Borislav Deianov");
|
|
MODULE_DESCRIPTION(IBM_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
IBM_PARAM(hotkey);
|
|
IBM_PARAM(bluetooth);
|
|
IBM_PARAM(video);
|
|
IBM_PARAM(light);
|
|
IBM_PARAM(dock);
|
|
IBM_PARAM(bay);
|
|
IBM_PARAM(cmos);
|
|
IBM_PARAM(led);
|
|
IBM_PARAM(beep);
|