/* * thinkpad_acpi.c - ThinkPad ACPI Extras * * * Copyright (C) 2004-2005 Borislav Deianov * Copyright (C) 2006-2007 Henrique de Moraes Holschuh * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #define IBM_VERSION "0.14" #define TPACPI_SYSFS_VERSION 0x000100 /* * Changelog: * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to * drivers/misc. * * 2006-11-22 0.13 new maintainer * changelog now lives in git commit history, and will * not be updated further in-file. * * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels * 2005-03-17 0.11 support for 600e, 770x * thanks to Jamie Lentin * support for 770e, G41 * G40 and G41 don't have a thinklight * temperatures no longer experimental * experimental brightness control * experimental volume control * experimental fan enable/disable * 2005-01-16 0.10 fix module loading on R30, R31 * 2005-01-16 0.9 support for 570, R30, R31 * ultrabay support on A22p, A3x * limit arg for cmos, led, beep, drop experimental status * more capable led control on A21e, A22p, T20-22, X20 * experimental temperatures and fan speed * experimental embedded controller register dump * mark more functions as __init, drop incorrect __exit * use MODULE_VERSION * thanks to Henrik Brix Andersen * fix parameter passing on module loading * thanks to Rusty Russell * thanks to Jim Radford * 2004-11-08 0.8 fix init error case, don't return from a macro * thanks to Chris Wright * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20 * fix led control on A21e * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20 * proc file format changed * video_switch command * experimental cmos control * experimental led control * experimental acpi sounds * 2004-09-16 0.4 support for module parameters * hotkey mask can be prefixed by 0x * video output switching * video expansion control * ultrabay eject support * removed lcd brightness/on/off control, didn't work * 2004-08-17 0.3 support for R40 * lcd off, brightness control * thinklight on/off * 2004-08-14 0.2 support for T series, X20 * bluetooth enable/disable * hotkey events disabled by default * removed fan control, currently useless * 2004-08-09 0.1 initial release, support for X series */ #include "thinkpad_acpi.h" MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh"); MODULE_DESCRIPTION(IBM_DESC); MODULE_VERSION(IBM_VERSION); MODULE_LICENSE("GPL"); /* Please remove this in year 2009 */ MODULE_ALIAS("ibm_acpi"); #define __unused __attribute__ ((unused)) /**************************************************************************** **************************************************************************** * * ACPI Helpers and device model * **************************************************************************** ****************************************************************************/ /************************************************************************* * ACPI basic handles */ static acpi_handle root_handle = NULL; #define IBM_HANDLE(object, parent, paths...) \ static acpi_handle object##_handle; \ static acpi_handle *object##_parent = &parent##_handle; \ static char *object##_path; \ static char *object##_paths[] = { paths } IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ "\\_SB.PCI.ISA.EC", /* 570 */ "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ "\\_SB.PCI0.ICH3.EC0", /* R31 */ "\\_SB.PCI0.LPC.EC", /* all others */ ); IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */ IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */ /************************************************************************* * Misc ACPI handles */ IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */ "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ "\\CMS", /* R40, R40e */ ); /* all others */ IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ "^HKEY", /* R30, R31 */ "HKEY", /* all others */ ); /* 570 */ /************************************************************************* * ACPI helpers */ static int acpi_evalf(acpi_handle handle, void *res, char *method, char *fmt, ...) { char *fmt0 = fmt; struct acpi_object_list params; union acpi_object in_objs[IBM_MAX_ACPI_ARGS]; struct acpi_buffer result, *resultp; union acpi_object out_obj; acpi_status status; va_list ap; char res_type; int success; int quiet; if (!*fmt) { printk(IBM_ERR "acpi_evalf() called with empty format\n"); return 0; } if (*fmt == 'q') { quiet = 1; fmt++; } else quiet = 0; res_type = *(fmt++); params.count = 0; params.pointer = &in_objs[0]; va_start(ap, fmt); while (*fmt) { char c = *(fmt++); switch (c) { case 'd': /* int */ in_objs[params.count].integer.value = va_arg(ap, int); in_objs[params.count++].type = ACPI_TYPE_INTEGER; break; /* add more types as needed */ default: printk(IBM_ERR "acpi_evalf() called " "with invalid format character '%c'\n", c); return 0; } } va_end(ap); if (res_type != 'v') { result.length = sizeof(out_obj); result.pointer = &out_obj; resultp = &result; } else resultp = NULL; status = acpi_evaluate_object(handle, method, ¶ms, resultp); switch (res_type) { case 'd': /* int */ if (res) *(int *)res = out_obj.integer.value; success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; break; case 'v': /* void */ success = status == AE_OK; break; /* add more types as needed */ default: printk(IBM_ERR "acpi_evalf() called " "with invalid format character '%c'\n", res_type); return 0; } if (!success && !quiet) printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", method, fmt0, status); return success; } static void __unused acpi_print_int(acpi_handle handle, char *method) { int i; if (acpi_evalf(handle, &i, method, "d")) printk(IBM_INFO "%s = 0x%x\n", method, i); else printk(IBM_ERR "error calling %s\n", method); } static int acpi_ec_read(int i, u8 * p) { int v; if (ecrd_handle) { if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) return 0; *p = v; } else { if (ec_read(i, p) < 0) return 0; } return 1; } static int acpi_ec_write(int i, u8 v) { if (ecwr_handle) { if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) return 0; } else { if (ec_write(i, v) < 0) return 0; } return 1; } static int _sta(acpi_handle handle) { int status; if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) status = 0; return status; } static int issue_thinkpad_cmos_command(int cmos_cmd) { if (!cmos_handle) return -ENXIO; if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) return -EIO; return 0; } /************************************************************************* * ACPI device model */ static void drv_acpi_handle_init(char *name, acpi_handle *handle, acpi_handle parent, char **paths, int num_paths, char **path) { int i; acpi_status status; for (i = 0; i < num_paths; i++) { status = acpi_get_handle(parent, paths[i], handle); if (ACPI_SUCCESS(status)) { *path = paths[i]; return; } } *handle = NULL; } static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) { struct ibm_struct *ibm = data; if (!ibm || !ibm->acpi || !ibm->acpi->notify) return; ibm->acpi->notify(ibm, event); } static int __init setup_acpi_notify(struct ibm_struct *ibm) { acpi_status status; int ret; BUG_ON(!ibm->acpi); if (!*ibm->acpi->handle) return 0; dbg_printk(TPACPI_DBG_INIT, "setting up ACPI notify for %s\n", ibm->name); ret = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); if (ret < 0) { printk(IBM_ERR "%s device not present\n", ibm->name); return -ENODEV; } acpi_driver_data(ibm->acpi->device) = ibm; sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", IBM_ACPI_EVENT_PREFIX, ibm->name); status = acpi_install_notify_handler(*ibm->acpi->handle, ibm->acpi->type, dispatch_acpi_notify, ibm); if (ACPI_FAILURE(status)) { if (status == AE_ALREADY_EXISTS) { printk(IBM_NOTICE "another device driver is already handling %s events\n", ibm->name); } else { printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n", ibm->name, status); } return -ENODEV; } ibm->flags.acpi_notify_installed = 1; return 0; } static int __init tpacpi_device_add(struct acpi_device *device) { return 0; } static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) { int ret; dbg_printk(TPACPI_DBG_INIT, "registering %s as an ACPI driver\n", ibm->name); BUG_ON(!ibm->acpi); ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); if (!ibm->acpi->driver) { printk(IBM_ERR "kzalloc(ibm->driver) failed\n"); return -ENOMEM; } sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name); ibm->acpi->driver->ids = ibm->acpi->hid; ibm->acpi->driver->ops.add = &tpacpi_device_add; ret = acpi_bus_register_driver(ibm->acpi->driver); if (ret < 0) { printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n", ibm->acpi->hid, ret); kfree(ibm->acpi->driver); ibm->acpi->driver = NULL; } else if (!ret) ibm->flags.acpi_driver_registered = 1; return ret; } /**************************************************************************** **************************************************************************** * * Procfs Helpers * **************************************************************************** ****************************************************************************/ static int dispatch_procfs_read(char *page, char **start, off_t off, int count, int *eof, void *data) { struct ibm_struct *ibm = data; int len; if (!ibm || !ibm->read) return -EINVAL; len = ibm->read(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_procfs_write(struct file *file, const char __user * userbuf, unsigned long count, void *data) { struct ibm_struct *ibm = 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(kernbuf); if (ret == 0) ret = count; kfree(kernbuf); return ret; } static char *next_cmd(char **cmds) { char *start = *cmds; char *end; while ((end = strchr(start, ',')) && end == start) start = end + 1; if (!end) return NULL; *end = 0; *cmds = end + 1; return start; } /**************************************************************************** **************************************************************************** * * Device model: hwmon and platform * **************************************************************************** ****************************************************************************/ static struct platform_device *tpacpi_pdev = NULL; static struct class_device *tpacpi_hwmon = NULL; static struct platform_driver tpacpi_pdriver = { .driver = { .name = IBM_DRVR_NAME, .owner = THIS_MODULE, }, }; /************************************************************************* * thinkpad-acpi driver attributes */ /* interface_version --------------------------------------------------- */ static ssize_t tpacpi_driver_interface_version_show( struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); } static DRIVER_ATTR(interface_version, S_IRUGO, tpacpi_driver_interface_version_show, NULL); /* debug_level --------------------------------------------------------- */ static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); } static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 0xffff, &t)) return -EINVAL; dbg_level = t; return count; } static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, tpacpi_driver_debug_show, tpacpi_driver_debug_store); /* version ------------------------------------------------------------- */ static ssize_t tpacpi_driver_version_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION); } static DRIVER_ATTR(version, S_IRUGO, tpacpi_driver_version_show, NULL); /* --------------------------------------------------------------------- */ static struct driver_attribute* tpacpi_driver_attributes[] = { &driver_attr_debug_level, &driver_attr_version, &driver_attr_interface_version, }; static int __init tpacpi_create_driver_attributes(struct device_driver *drv) { int i, res; i = 0; res = 0; while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { res = driver_create_file(drv, tpacpi_driver_attributes[i]); i++; } return res; } static void tpacpi_remove_driver_attributes(struct device_driver *drv) { int i; for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) driver_remove_file(drv, tpacpi_driver_attributes[i]); } /************************************************************************* * sysfs support helpers */ struct attribute_set_obj { struct attribute_set s; struct attribute *a; } __attribute__((packed)); static struct attribute_set *create_attr_set(unsigned int max_members, const char* name) { struct attribute_set_obj *sobj; if (max_members == 0) return NULL; /* Allocates space for implicit NULL at the end too */ sobj = kzalloc(sizeof(struct attribute_set_obj) + max_members * sizeof(struct attribute *), GFP_KERNEL); if (!sobj) return NULL; sobj->s.max_members = max_members; sobj->s.group.attrs = &sobj->a; sobj->s.group.name = name; return &sobj->s; } /* not multi-threaded safe, use it in a single thread per set */ static int add_to_attr_set(struct attribute_set* s, struct attribute *attr) { if (!s || !attr) return -EINVAL; if (s->members >= s->max_members) return -ENOMEM; s->group.attrs[s->members] = attr; s->members++; return 0; } static int add_many_to_attr_set(struct attribute_set* s, struct attribute **attr, unsigned int count) { int i, res; for (i = 0; i < count; i++) { res = add_to_attr_set(s, attr[i]); if (res) return res; } return 0; } static void delete_attr_set(struct attribute_set* s, struct kobject *kobj) { sysfs_remove_group(kobj, &s->group); destroy_attr_set(s); } static int parse_strtoul(const char *buf, unsigned long max, unsigned long *value) { char *endp; *value = simple_strtoul(buf, &endp, 0); while (*endp && isspace(*endp)) endp++; if (*endp || *value > max) return -EINVAL; return 0; } /**************************************************************************** **************************************************************************** * * Subdrivers * **************************************************************************** ****************************************************************************/ /************************************************************************* * thinkpad-acpi init subdriver */ static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) { printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION); printk(IBM_INFO "%s\n", IBM_URL); if (ibm_thinkpad_ec_found) printk(IBM_INFO "ThinkPad EC firmware %s\n", ibm_thinkpad_ec_found); return 0; } static int thinkpad_acpi_driver_read(char *p) { int len = 0; len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC); len += sprintf(p + len, "version:\t%s\n", IBM_VERSION); return len; } static struct ibm_struct thinkpad_acpi_driver_data = { .name = "driver", .read = thinkpad_acpi_driver_read, }; /************************************************************************* * Hotkey subdriver */ static int hotkey_orig_status; static int hotkey_orig_mask; static int __init hotkey_init(struct ibm_init_struct *iibm) { int res; vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n"); IBM_ACPIHANDLE_INIT(hkey); mutex_init(&hotkey_mutex); /* hotkey not supported on 570 */ tp_features.hotkey = hkey_handle != NULL; vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n", str_supported(tp_features.hotkey)); if (tp_features.hotkey) { /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, A30, R30, R31, T20-22, X20-21, X22-24 */ tp_features.hotkey_mask = acpi_evalf(hkey_handle, NULL, "DHKN", "qv"); vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", str_supported(tp_features.hotkey_mask)); res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask); if (res) return res; } return (tp_features.hotkey)? 0 : 1; } static void hotkey_exit(void) { int res; if (tp_features.hotkey) { dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n"); res = hotkey_set(hotkey_orig_status, hotkey_orig_mask); if (res) printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n"); } } static void hotkey_notify(struct ibm_struct *ibm, u32 event) { int hkey; if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) acpi_bus_generate_event(ibm->acpi->device, event, hkey); else { printk(IBM_ERR "unknown hotkey event %d\n", event); acpi_bus_generate_event(ibm->acpi->device, event, 0); } } /* * Call with hotkey_mutex held */ static int hotkey_get(int *status, int *mask) { if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) return -EIO; if (tp_features.hotkey_mask) if (!acpi_evalf(hkey_handle, mask, "DHKN", "d")) return -EIO; return 0; } /* * Call with hotkey_mutex held */ static int hotkey_set(int status, int mask) { int i; if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) return -EIO; if (tp_features.hotkey_mask) for (i = 0; i < 32; i++) { int bit = ((1 << i) & mask) != 0; if (!acpi_evalf(hkey_handle, NULL, "MHKM", "vdd", i + 1, bit)) return -EIO; } return 0; } static int hotkey_read(char *p) { int res, status, mask; int len = 0; if (!tp_features.hotkey) { len += sprintf(p + len, "status:\t\tnot supported\n"); return len; } res = mutex_lock_interruptible(&hotkey_mutex); if (res < 0) return res; res = hotkey_get(&status, &mask); mutex_unlock(&hotkey_mutex); if (res) return res; len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); if (tp_features.hotkey_mask) { len += sprintf(p + len, "mask:\t\t0x%04x\n", mask); len += sprintf(p + len, "commands:\tenable, disable, reset, \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 res, status, mask; char *cmd; int do_cmd = 0; if (!tp_features.hotkey) return -ENODEV; res = mutex_lock_interruptible(&hotkey_mutex); if (res < 0) return res; res = hotkey_get(&status, &mask); if (res) goto errexit; res = 0; 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 { res = -EINVAL; goto errexit; } do_cmd = 1; } if (do_cmd) res = hotkey_set(status, mask); errexit: mutex_unlock(&hotkey_mutex); return res; } static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { .hid = IBM_HKEY_HID, .notify = hotkey_notify, .handle = &hkey_handle, .type = ACPI_DEVICE_NOTIFY, }; static struct ibm_struct hotkey_driver_data = { .name = "hotkey", .read = hotkey_read, .write = hotkey_write, .exit = hotkey_exit, .acpi = &ibm_hotkey_acpidriver, }; /************************************************************************* * Bluetooth subdriver */ static int __init bluetooth_init(struct ibm_init_struct *iibm) { int status = 0; vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n"); IBM_ACPIHANDLE_INIT(hkey); /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ tp_features.bluetooth = hkey_handle && acpi_evalf(hkey_handle, &status, "GBDC", "qd"); vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n", str_supported(tp_features.bluetooth), status); if (tp_features.bluetooth && !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { /* no bluetooth hardware present in system */ tp_features.bluetooth = 0; dbg_printk(TPACPI_DBG_INIT, "bluetooth hardware not installed\n"); } return (tp_features.bluetooth)? 0 : 1; } static int bluetooth_get_radiosw(void) { int status; if (!tp_features.bluetooth) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) return -EIO; return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0); } static int bluetooth_set_radiosw(int radio_on) { int status; if (!tp_features.bluetooth) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) return -EIO; if (radio_on) status |= TP_ACPI_BLUETOOTH_RADIOSSW; else status &= ~TP_ACPI_BLUETOOTH_RADIOSSW; if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) return -EIO; return 0; } static int bluetooth_read(char *p) { int len = 0; int status = bluetooth_get_radiosw(); if (!tp_features.bluetooth) len += sprintf(p + len, "status:\t\tnot supported\n"); else { len += sprintf(p + len, "status:\t\t%s\n", (status)? "enabled" : "disabled"); len += sprintf(p + len, "commands:\tenable, disable\n"); } return len; } static int bluetooth_write(char *buf) { char *cmd; if (!tp_features.bluetooth) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "enable") == 0) { bluetooth_set_radiosw(1); } else if (strlencmp(cmd, "disable") == 0) { bluetooth_set_radiosw(0); } else return -EINVAL; } return 0; } static struct ibm_struct bluetooth_driver_data = { .name = "bluetooth", .read = bluetooth_read, .write = bluetooth_write, }; /************************************************************************* * Wan subdriver */ static int __init wan_init(struct ibm_init_struct *iibm) { int status = 0; vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n"); IBM_ACPIHANDLE_INIT(hkey); tp_features.wan = hkey_handle && acpi_evalf(hkey_handle, &status, "GWAN", "qd"); vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n", str_supported(tp_features.wan), status); if (tp_features.wan && !(status & TP_ACPI_WANCARD_HWPRESENT)) { /* no wan hardware present in system */ tp_features.wan = 0; dbg_printk(TPACPI_DBG_INIT, "wan hardware not installed\n"); } return (tp_features.wan)? 0 : 1; } static int wan_get_radiosw(void) { int status; if (!tp_features.wan) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) return -EIO; return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0); } static int wan_set_radiosw(int radio_on) { int status; if (!tp_features.wan) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) return -EIO; if (radio_on) status |= TP_ACPI_WANCARD_RADIOSSW; else status &= ~TP_ACPI_WANCARD_RADIOSSW; if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) return -EIO; return 0; } static int wan_read(char *p) { int len = 0; int status = wan_get_radiosw(); if (!tp_features.wan) len += sprintf(p + len, "status:\t\tnot supported\n"); else { len += sprintf(p + len, "status:\t\t%s\n", (status)? "enabled" : "disabled"); len += sprintf(p + len, "commands:\tenable, disable\n"); } return len; } static int wan_write(char *buf) { char *cmd; if (!tp_features.wan) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "enable") == 0) { wan_set_radiosw(1); } else if (strlencmp(cmd, "disable") == 0) { wan_set_radiosw(0); } else return -EINVAL; } return 0; } static struct ibm_struct wan_driver_data = { .name = "wan", .read = wan_read, .write = wan_write, .flags.experimental = 1, }; /************************************************************************* * 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 __init video_init(struct ibm_init_struct *iibm) { int ivga; vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); IBM_ACPIHANDLE_INIT(vid); IBM_ACPIHANDLE_INIT(vid2); 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 = TPACPI_VIDEO_NONE; else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) /* 570 */ video_supported = TPACPI_VIDEO_570; else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) /* 600e/x, 770e, 770x */ video_supported = TPACPI_VIDEO_770; else /* all others */ video_supported = TPACPI_VIDEO_NEW; vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", str_supported(video_supported != TPACPI_VIDEO_NONE), video_supported); return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; } static void video_exit(void) { dbg_printk(TPACPI_DBG_EXIT, "restoring original video autoswitch mode\n"); if (video_autosw_set(video_orig_autosw)) printk(IBM_ERR "error while trying to restore original " "video autoswitch mode\n"); } static int video_outputsw_get(void) { int status = 0; int i; switch (video_supported) { case TPACPI_VIDEO_570: if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", TP_ACPI_VIDEO_570_PHSCMD)) return -EIO; status = i & TP_ACPI_VIDEO_570_PHSMASK; break; case TPACPI_VIDEO_770: if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_LCD; if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_CRT; break; case TPACPI_VIDEO_NEW: if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || !acpi_evalf(NULL, &i, "\\VCDC", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_CRT; if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || !acpi_evalf(NULL, &i, "\\VCDL", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_LCD; if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_DVI; break; default: return -ENOSYS; } return status; } static int video_outputsw_set(int status) { int autosw; int res = 0; switch (video_supported) { case TPACPI_VIDEO_570: res = acpi_evalf(NULL, NULL, "\\_SB.PHS2", "vdd", TP_ACPI_VIDEO_570_PHS2CMD, status | TP_ACPI_VIDEO_570_PHS2SET); break; case TPACPI_VIDEO_770: autosw = video_autosw_get(); if (autosw < 0) return autosw; res = video_autosw_set(1); if (res) return res; res = acpi_evalf(vid_handle, NULL, "ASWT", "vdd", status * 0x100, 0); if (!autosw && video_autosw_set(autosw)) { printk(IBM_ERR "video auto-switch left enabled due to error\n"); return -EIO; } break; case TPACPI_VIDEO_NEW: res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); break; default: return -ENOSYS; } return (res)? 0 : -EIO; } static int video_autosw_get(void) { int autosw = 0; switch (video_supported) { case TPACPI_VIDEO_570: if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) return -EIO; break; case TPACPI_VIDEO_770: case TPACPI_VIDEO_NEW: if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) return -EIO; break; default: return -ENOSYS; } return autosw & 1; } static int video_autosw_set(int enable) { if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) return -EIO; return 0; } static int video_outputsw_cycle(void) { int autosw = video_autosw_get(); int res; if (autosw < 0) return autosw; switch (video_supported) { case TPACPI_VIDEO_570: res = video_autosw_set(1); if (res) return res; res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); break; case TPACPI_VIDEO_770: case TPACPI_VIDEO_NEW: res = video_autosw_set(1); if (res) return res; res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); break; default: return -ENOSYS; } if (!autosw && video_autosw_set(autosw)) { printk(IBM_ERR "video auto-switch left enabled due to error\n"); return -EIO; } return (res)? 0 : -EIO; } static int video_expand_toggle(void) { switch (video_supported) { case TPACPI_VIDEO_570: return acpi_evalf(ec_handle, NULL, "_Q17", "v")? 0 : -EIO; case TPACPI_VIDEO_770: return acpi_evalf(vid_handle, NULL, "VEXP", "v")? 0 : -EIO; case TPACPI_VIDEO_NEW: return acpi_evalf(NULL, NULL, "\\VEXP", "v")? 0 : -EIO; default: return -ENOSYS; } /* not reached */ } static int video_read(char *p) { int status, autosw; int len = 0; if (video_supported == TPACPI_VIDEO_NONE) { len += sprintf(p + len, "status:\t\tnot supported\n"); return len; } status = video_outputsw_get(); if (status < 0) return status; autosw = video_autosw_get(); if (autosw < 0) return autosw; 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 == TPACPI_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 == TPACPI_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; int res; if (video_supported == TPACPI_VIDEO_NONE) return -ENODEV; enable = 0; disable = 0; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "lcd_enable") == 0) { enable |= TP_ACPI_VIDEO_S_LCD; } else if (strlencmp(cmd, "lcd_disable") == 0) { disable |= TP_ACPI_VIDEO_S_LCD; } else if (strlencmp(cmd, "crt_enable") == 0) { enable |= TP_ACPI_VIDEO_S_CRT; } else if (strlencmp(cmd, "crt_disable") == 0) { disable |= TP_ACPI_VIDEO_S_CRT; } else if (video_supported == TPACPI_VIDEO_NEW && strlencmp(cmd, "dvi_enable") == 0) { enable |= TP_ACPI_VIDEO_S_DVI; } else if (video_supported == TPACPI_VIDEO_NEW && strlencmp(cmd, "dvi_disable") == 0) { disable |= TP_ACPI_VIDEO_S_DVI; } else if (strlencmp(cmd, "auto_enable") == 0) { res = video_autosw_set(1); if (res) return res; } else if (strlencmp(cmd, "auto_disable") == 0) { res = video_autosw_set(0); if (res) return res; } else if (strlencmp(cmd, "video_switch") == 0) { res = video_outputsw_cycle(); if (res) return res; } else if (strlencmp(cmd, "expand_toggle") == 0) { res = video_expand_toggle(); if (res) return res; } else return -EINVAL; } if (enable || disable) { status = video_outputsw_get(); if (status < 0) return status; res = video_outputsw_set((status & ~disable) | enable); if (res) return res; } return 0; } static struct ibm_struct video_driver_data = { .name = "video", .read = video_read, .write = video_write, .exit = video_exit, }; /************************************************************************* * Light (thinklight) subdriver */ IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */ static int __init light_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); IBM_ACPIHANDLE_INIT(ledb); IBM_ACPIHANDLE_INIT(lght); IBM_ACPIHANDLE_INIT(cmos); /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; if (tp_features.light) /* light status not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ tp_features.light_status = acpi_evalf(ec_handle, NULL, "KBLT", "qv"); vdbg_printk(TPACPI_DBG_INIT, "light is %s\n", str_supported(tp_features.light)); return (tp_features.light)? 0 : 1; } static int light_read(char *p) { int len = 0; int status = 0; if (!tp_features.light) { len += sprintf(p + len, "status:\t\tnot supported\n"); } else if (!tp_features.light_status) { 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 (!tp_features.light) 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; } static struct ibm_struct light_driver_data = { .name = "light", .read = light_read, .write = light_write, }; /************************************************************************* * Dock subdriver */ #ifdef CONFIG_THINKPAD_ACPI_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 */ /* don't list other alternatives as we install a notify handler on the 570 */ IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ #define dock_docked() (_sta(dock_handle) & 1) static int __init dock_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n"); IBM_ACPIHANDLE_INIT(dock); IBM_ACPIHANDLE_INIT(pci); vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n", str_supported(dock_handle != NULL)); return (dock_handle)? 0 : 1; } static void dock_notify(struct ibm_struct *ibm, u32 event) { int docked = dock_docked(); int pci = ibm->acpi->hid && strstr(ibm->acpi->hid, IBM_PCI_HID); if (event == 1 && !pci) /* 570 */ acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */ else if (event == 1 && pci) /* 570 */ acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */ else if (event == 3 && docked) acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */ else if (event == 3 && !docked) acpi_bus_generate_event(ibm->acpi->device, event, 2); /* undock */ else if (event == 0 && docked) acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */ else { printk(IBM_ERR "unknown dock event %d, status %d\n", event, _sta(dock_handle)); acpi_bus_generate_event(ibm->acpi->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; } static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = { { .notify = dock_notify, .handle = &dock_handle, .type = ACPI_SYSTEM_NOTIFY, }, { .hid = IBM_PCI_HID, .notify = dock_notify, .handle = &pci_handle, .type = ACPI_SYSTEM_NOTIFY, }, }; static struct ibm_struct dock_driver_data[2] = { { .name = "dock", .read = dock_read, .write = dock_write, .acpi = &ibm_dock_acpidriver[0], }, { .name = "dock", .acpi = &ibm_dock_acpidriver[1], }, }; #endif /* CONFIG_THINKPAD_ACPI_DOCK */ /************************************************************************* * Bay subdriver */ #ifdef CONFIG_THINKPAD_ACPI_BAY 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 __init bay_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n"); IBM_ACPIHANDLE_INIT(bay); if (bay_handle) IBM_ACPIHANDLE_INIT(bay_ej); IBM_ACPIHANDLE_INIT(bay2); if (bay2_handle) IBM_ACPIHANDLE_INIT(bay2_ej); tp_features.bay_status = bay_handle && acpi_evalf(bay_handle, NULL, "_STA", "qv"); tp_features.bay_status2 = bay2_handle && acpi_evalf(bay2_handle, NULL, "_STA", "qv"); tp_features.bay_eject = bay_handle && bay_ej_handle && (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); tp_features.bay_eject2 = bay2_handle && bay2_ej_handle && (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); vdbg_printk(TPACPI_DBG_INIT, "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n", str_supported(tp_features.bay_status), str_supported(tp_features.bay_eject), str_supported(tp_features.bay_status2), str_supported(tp_features.bay_eject2)); return (tp_features.bay_status || tp_features.bay_eject || tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1; } static void bay_notify(struct ibm_struct *ibm, u32 event) { acpi_bus_generate_event(ibm->acpi->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", tp_features.bay_status ? (occupied ? "occupied" : "unoccupied") : "not supported"); if (tp_features.bay_status2) len += sprintf(p + len, "status2:\t%s\n", occupied2 ? "occupied" : "unoccupied"); eject = tp_features.bay_eject && occupied; eject2 = tp_features.bay_eject2 && 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 (!tp_features.bay_eject && !tp_features.bay_eject2) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) { if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) return -EIO; } else if (tp_features.bay_eject2 && strlencmp(cmd, "eject2") == 0) { if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) return -EIO; } else return -EINVAL; } return 0; } static struct tp_acpi_drv_struct ibm_bay_acpidriver = { .notify = bay_notify, .handle = &bay_handle, .type = ACPI_SYSTEM_NOTIFY, }; static struct ibm_struct bay_driver_data = { .name = "bay", .read = bay_read, .write = bay_write, .acpi = &ibm_bay_acpidriver, }; #endif /* CONFIG_THINKPAD_ACPI_BAY */ /************************************************************************* * CMOS subdriver */ /* sysfs cmos_command -------------------------------------------------- */ static ssize_t cmos_command_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long cmos_cmd; int res; if (parse_strtoul(buf, 21, &cmos_cmd)) return -EINVAL; res = issue_thinkpad_cmos_command(cmos_cmd); return (res)? res : count; } static struct device_attribute dev_attr_cmos_command = __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store); /* --------------------------------------------------------------------- */ static int __init cmos_init(struct ibm_init_struct *iibm) { int res; vdbg_printk(TPACPI_DBG_INIT, "initializing cmos commands subdriver\n"); IBM_ACPIHANDLE_INIT(cmos); vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", str_supported(cmos_handle != NULL)); res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); if (res) return res; return (cmos_handle)? 0 : 1; } static void cmos_exit(void) { device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); } 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 ( is 0-21)\n"); } return len; } static int cmos_write(char *buf) { char *cmd; int cmos_cmd, res; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "%u", &cmos_cmd) == 1 && cmos_cmd >= 0 && cmos_cmd <= 21) { /* cmos_cmd set */ } else return -EINVAL; res = issue_thinkpad_cmos_command(cmos_cmd); if (res) return res; } return 0; } static struct ibm_struct cmos_driver_data = { .name = "cmos", .read = cmos_read, .write = cmos_write, .exit = cmos_exit, }; /************************************************************************* * 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 __init led_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); IBM_ACPIHANDLE_INIT(led); if (!led_handle) /* led not supported on R30, R31 */ led_supported = TPACPI_LED_NONE; else if (strlencmp(led_path, "SLED") == 0) /* 570 */ led_supported = TPACPI_LED_570; else if (strlencmp(led_path, "SYSL") == 0) /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ led_supported = TPACPI_LED_OLD; else /* all others */ led_supported = TPACPI_LED_NEW; vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", str_supported(led_supported), led_supported); return (led_supported != TPACPI_LED_NONE)? 0 : 1; } #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 == TPACPI_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" " on, off, blink ( 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 == TPACPI_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 == TPACPI_LED_OLD) { /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ led = 1 << led; ret = ec_write(TPACPI_LED_EC_HLMS, led); if (ret >= 0) ret = ec_write(TPACPI_LED_EC_HLBL, led * led_exp_hlbl[ind]); if (ret >= 0) ret = ec_write(TPACPI_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; } static struct ibm_struct led_driver_data = { .name = "led", .read = led_read, .write = led_write, }; /************************************************************************* * Beep subdriver */ IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ static int __init beep_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); IBM_ACPIHANDLE_INIT(beep); vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", str_supported(beep_handle != NULL)); return (beep_handle)? 0 : 1; } 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 ( 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; } static struct ibm_struct beep_driver_data = { .name = "beep", .read = beep_read, .write = beep_write, }; /************************************************************************* * Thermal subdriver */ static enum thermal_access_mode thermal_read_mode; /* sysfs temp##_input -------------------------------------------------- */ static ssize_t thermal_temp_input_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); int idx = sensor_attr->index; s32 value; int res; res = thermal_get_sensor(idx, &value); if (res) return res; if (value == TP_EC_THERMAL_TMP_NA * 1000) return -ENXIO; return snprintf(buf, PAGE_SIZE, "%d\n", value); } #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB) static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { THERMAL_SENSOR_ATTR_TEMP(1, 0), THERMAL_SENSOR_ATTR_TEMP(2, 1), THERMAL_SENSOR_ATTR_TEMP(3, 2), THERMAL_SENSOR_ATTR_TEMP(4, 3), THERMAL_SENSOR_ATTR_TEMP(5, 4), THERMAL_SENSOR_ATTR_TEMP(6, 5), THERMAL_SENSOR_ATTR_TEMP(7, 6), THERMAL_SENSOR_ATTR_TEMP(8, 7), THERMAL_SENSOR_ATTR_TEMP(9, 8), THERMAL_SENSOR_ATTR_TEMP(10, 9), THERMAL_SENSOR_ATTR_TEMP(11, 10), THERMAL_SENSOR_ATTR_TEMP(12, 11), THERMAL_SENSOR_ATTR_TEMP(13, 12), THERMAL_SENSOR_ATTR_TEMP(14, 13), THERMAL_SENSOR_ATTR_TEMP(15, 14), THERMAL_SENSOR_ATTR_TEMP(16, 15), }; #define THERMAL_ATTRS(X) \ &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr static struct attribute *thermal_temp_input_attr[] = { THERMAL_ATTRS(8), THERMAL_ATTRS(9), THERMAL_ATTRS(10), THERMAL_ATTRS(11), THERMAL_ATTRS(12), THERMAL_ATTRS(13), THERMAL_ATTRS(14), THERMAL_ATTRS(15), THERMAL_ATTRS(0), THERMAL_ATTRS(1), THERMAL_ATTRS(2), THERMAL_ATTRS(3), THERMAL_ATTRS(4), THERMAL_ATTRS(5), THERMAL_ATTRS(6), THERMAL_ATTRS(7), NULL }; static const struct attribute_group thermal_temp_input16_group = { .attrs = thermal_temp_input_attr }; static const struct attribute_group thermal_temp_input8_group = { .attrs = &thermal_temp_input_attr[8] }; #undef THERMAL_SENSOR_ATTR_TEMP #undef THERMAL_ATTRS /* --------------------------------------------------------------------- */ static int __init thermal_init(struct ibm_init_struct *iibm) { u8 t, ta1, ta2; int i; int acpi_tmp7; int res; vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 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 (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { ta1 |= t; } else { ta1 = 0; break; } if (acpi_ec_read(TP_EC_THERMAL_TMP8 + 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 = TPACPI_THERMAL_ACPI_TMP07; } else { printk(IBM_ERR "ThinkPad ACPI EC access misbehaving, " "disabling thermal sensors access\n"); thermal_read_mode = TPACPI_THERMAL_NONE; } } else { thermal_read_mode = (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; } } else if (acpi_tmp7) { if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { /* 600e/x, 770e, 770x */ thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; } else { /* Standard ACPI TMPx access, max 8 sensors */ thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; } } else { /* temperatures not supported on 570, G4x, R30, R31, R32 */ thermal_read_mode = TPACPI_THERMAL_NONE; } vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), thermal_read_mode); switch(thermal_read_mode) { case TPACPI_THERMAL_TPEC_16: res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &thermal_temp_input16_group); if (res) return res; break; case TPACPI_THERMAL_TPEC_8: case TPACPI_THERMAL_ACPI_TMP07: case TPACPI_THERMAL_ACPI_UPDT: res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &thermal_temp_input8_group); if (res) return res; break; case TPACPI_THERMAL_NONE: default: return 1; } return 0; } static void thermal_exit(void) { switch(thermal_read_mode) { case TPACPI_THERMAL_TPEC_16: sysfs_remove_group(&tpacpi_pdev->dev.kobj, &thermal_temp_input16_group); break; case TPACPI_THERMAL_TPEC_8: case TPACPI_THERMAL_ACPI_TMP07: case TPACPI_THERMAL_ACPI_UPDT: sysfs_remove_group(&tpacpi_pdev->dev.kobj, &thermal_temp_input16_group); break; case TPACPI_THERMAL_NONE: default: break; } } /* idx is zero-based */ static int thermal_get_sensor(int idx, s32 *value) { int t; s8 tmp; char tmpi[5]; t = TP_EC_THERMAL_TMP0; switch (thermal_read_mode) { #if TPACPI_MAX_THERMAL_SENSORS >= 16 case TPACPI_THERMAL_TPEC_16: if (idx >= 8 && idx <= 15) { t = TP_EC_THERMAL_TMP8; idx -= 8; } /* fallthrough */ #endif case TPACPI_THERMAL_TPEC_8: if (idx <= 7) { if (!acpi_ec_read(t + idx, &tmp)) return -EIO; *value = tmp * 1000; return 0; } break; case TPACPI_THERMAL_ACPI_UPDT: if (idx <= 7) { snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) return -EIO; if (!acpi_evalf(ec_handle, &t, tmpi, "d")) return -EIO; *value = (t - 2732) * 100; return 0; } break; case TPACPI_THERMAL_ACPI_TMP07: if (idx <= 7) { snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); if (!acpi_evalf(ec_handle, &t, tmpi, "d")) return -EIO; *value = t * 1000; return 0; } break; case TPACPI_THERMAL_NONE: default: return -ENOSYS; } return -EINVAL; } static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) { int res, i; int n; n = 8; i = 0; if (!s) return -EINVAL; if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) n = 16; for(i = 0 ; i < n; i++) { res = thermal_get_sensor(i, &s->temp[i]); if (res) return res; } return n; } 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; } static struct ibm_struct thermal_driver_data = { .name = "thermal", .read = thermal_read, .exit = thermal_exit, }; /************************************************************************* * 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 0x" " ( is 00-ff, is 00-ff)\n"); len += sprintf(p + len, "commands:\t0x " " ( is 00-ff, 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; } static struct ibm_struct ecdump_driver_data = { .name = "ecdump", .read = ecdump_read, .write = ecdump_write, .flags.experimental = 1, }; /************************************************************************* * 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 __init brightness_init(struct ibm_init_struct *iibm) { int b; vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); b = brightness_get(NULL); if (b < 0) return b; ibm_backlight_device = backlight_device_register( TPACPI_BACKLIGHT_DEV_NAME, 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); } vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n"); 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) { vdbg_printk(TPACPI_DBG_EXIT, "calling backlight_device_unregister()\n"); 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 (issue_thinkpad_cmos_command(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 " " ( 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; } static struct ibm_struct brightness_driver_data = { .name = "brightness", .read = brightness_read, .write = brightness_write, .exit = brightness_exit, }; /************************************************************************* * 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 " " ( 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 && (issue_thinkpad_cmos_command(cmos_cmd) || !acpi_ec_write(volume_offset, level))) return -EIO; for (i = level; i != new_level; i += inc) if (issue_thinkpad_cmos_command(cmos_cmd) || !acpi_ec_write(volume_offset, i + inc)) return -EIO; if (mute && (issue_thinkpad_cmos_command(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 (issue_thinkpad_cmos_command(cmos_cmd) || !acpi_ec_write(volume_offset, level + new_mute)) return -EIO; } } return 0; } static struct ibm_struct volume_driver_data = { .name = "volume", .read = volume_read, .write = volume_write, }; /************************************************************************* * Fan subdriver */ /* * FAN ACCESS MODES * * TPACPI_FAN_RD_ACPI_GFAN: * ACPI GFAN method: returns fan level * * see TPACPI_FAN_WR_ACPI_SFAN * EC 0x2f (HFSP) not available if GFAN exists * * TPACPI_FAN_WR_ACPI_SFAN: * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) * * EC 0x2f (HFSP) might be available *for reading*, but do not use * it for writing. * * TPACPI_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 full speed mode (takes precedence over bit 7); * not available on all thinkpads. May disable * the tachometer while the fan controller ramps up * the speed (which can take up to a few *minutes*). * Speeds up fan to 100% duty-cycle, which is 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 * TPACPI_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: may go stale while the EC is switching to full speed * mode. * * For firmware bugs, refer to: * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues * * TPACPI_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. * * TPACPI_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 u8 fan_control_initial_status; static u8 fan_control_desired_level; 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 */ /* * SYSFS fan layout: hwmon compatible (device) * * pwm*_enable: * 0: "disengaged" mode * 1: manual mode * 2: native EC "auto" mode (recommended, hardware default) * * pwm*: set speed in manual mode, ignored otherwise. * 0 is level 0; 255 is level 7. Intermediate points done with linear * interpolation. * * fan*_input: tachometer reading, RPM * * * SYSFS fan layout: extensions * * fan_watchdog (driver): * fan watchdog interval in seconds, 0 disables (default), max 120 */ /* sysfs fan pwm1_enable ----------------------------------------------- */ static ssize_t fan_pwm1_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, mode; u8 status; res = fan_get_status_safe(&status); if (res) return res; if (unlikely(tp_features.fan_ctrl_status_undef)) { if (status != fan_control_initial_status) { tp_features.fan_ctrl_status_undef = 0; } else { /* Return most likely status. In fact, it * might be the only possible status */ status = TP_EC_FAN_AUTO; } } if (status & TP_EC_FAN_FULLSPEED) { mode = 0; } else if (status & TP_EC_FAN_AUTO) { mode = 2; } else mode = 1; return snprintf(buf, PAGE_SIZE, "%d\n", mode); } static ssize_t fan_pwm1_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res, level; if (parse_strtoul(buf, 2, &t)) return -EINVAL; switch (t) { case 0: level = TP_EC_FAN_FULLSPEED; break; case 1: level = TPACPI_FAN_LAST_LEVEL; break; case 2: level = TP_EC_FAN_AUTO; break; case 3: /* reserved for software-controlled auto mode */ return -ENOSYS; default: return -EINVAL; } res = fan_set_level_safe(level); if (res == -ENXIO) return -EINVAL; else if (res < 0) return res; fan_watchdog_reset(); return count; } static struct device_attribute dev_attr_fan_pwm1_enable = __ATTR(pwm1_enable, S_IWUSR | S_IRUGO, fan_pwm1_enable_show, fan_pwm1_enable_store); /* sysfs fan pwm1 ------------------------------------------------------ */ static ssize_t fan_pwm1_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; u8 status; res = fan_get_status_safe(&status); if (res) return res; if (unlikely(tp_features.fan_ctrl_status_undef)) { if (status != fan_control_initial_status) { tp_features.fan_ctrl_status_undef = 0; } else { status = TP_EC_FAN_AUTO; } } if ((status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) status = fan_control_desired_level; if (status > 7) status = 7; return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); } static ssize_t fan_pwm1_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long s; int rc; u8 status, newlevel; if (parse_strtoul(buf, 255, &s)) return -EINVAL; /* scale down from 0-255 to 0-7 */ newlevel = (s >> 5) & 0x07; rc = mutex_lock_interruptible(&fan_mutex); if (rc < 0) return rc; rc = fan_get_status(&status); if (!rc && (status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { rc = fan_set_level(newlevel); if (rc == -ENXIO) rc = -EINVAL; else if (!rc) { fan_update_desired_level(newlevel); fan_watchdog_reset(); } } mutex_unlock(&fan_mutex); return (rc)? rc : count; } static struct device_attribute dev_attr_fan_pwm1 = __ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); /* sysfs fan fan1_input ------------------------------------------------ */ static ssize_t fan_fan1_input_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; unsigned int speed; res = fan_get_speed(&speed); if (res < 0) return res; return snprintf(buf, PAGE_SIZE, "%u\n", speed); } static struct device_attribute dev_attr_fan_fan1_input = __ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); /* sysfs fan fan_watchdog (driver) ------------------------------------- */ static ssize_t fan_fan_watchdog_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); } static ssize_t fan_fan_watchdog_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 120, &t)) return -EINVAL; if (!fan_control_allowed) return -EPERM; fan_watchdog_maxinterval = t; fan_watchdog_reset(); return count; } static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, fan_fan_watchdog_show, fan_fan_watchdog_store); /* --------------------------------------------------------------------- */ static struct attribute *fan_attributes[] = { &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr, &dev_attr_fan_fan1_input.attr, NULL }; static const struct attribute_group fan_attr_group = { .attrs = fan_attributes, }; static int __init fan_init(struct ibm_init_struct *iibm) { int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n"); mutex_init(&fan_mutex); fan_status_access_mode = TPACPI_FAN_NONE; fan_control_access_mode = TPACPI_FAN_WR_NONE; fan_control_commands = 0; fan_watchdog_maxinterval = 0; tp_features.fan_ctrl_status_undef = 0; fan_control_desired_level = 7; IBM_ACPIHANDLE_INIT(fans); IBM_ACPIHANDLE_INIT(gfan); IBM_ACPIHANDLE_INIT(sfan); if (gfan_handle) { /* 570, 600e/x, 770e, 770x */ fan_status_access_mode = TPACPI_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 = TPACPI_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"); tp_features.fan_ctrl_status_undef = 1; } } else { printk(IBM_ERR "ThinkPad ACPI EC access misbehaving, " "fan status and control unavailable\n"); return 1; } } if (sfan_handle) { /* 570, 770x-JL */ fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; fan_control_commands |= TPACPI_FAN_CMD_LEVEL | TPACPI_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 = TPACPI_FAN_WR_ACPI_FANS; fan_control_commands |= TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } else { fan_control_access_mode = TPACPI_FAN_WR_TPEC; fan_control_commands |= TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } } } vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n", str_supported(fan_status_access_mode != TPACPI_FAN_NONE || fan_control_access_mode != TPACPI_FAN_WR_NONE), fan_status_access_mode, fan_control_access_mode); /* fan control master switch */ if (!fan_control_allowed) { fan_control_access_mode = TPACPI_FAN_WR_NONE; fan_control_commands = 0; dbg_printk(TPACPI_DBG_INIT, "fan control features disabled by parameter\n"); } /* update fan_control_desired_level */ if (fan_status_access_mode != TPACPI_FAN_NONE) fan_get_status_safe(NULL); if (fan_status_access_mode != TPACPI_FAN_NONE || fan_control_access_mode != TPACPI_FAN_WR_NONE) { rc = sysfs_create_group(&tpacpi_pdev->dev.kobj, &fan_attr_group); if (!(rc < 0)) rc = driver_create_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog); if (rc < 0) return rc; return 0; } else return 1; } /* * Call with fan_mutex held */ static void fan_update_desired_level(u8 status) { if ((status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { if (status > 7) fan_control_desired_level = 7; else fan_control_desired_level = status; } } static int fan_get_status(u8 *status) { u8 s; /* TODO: * Add TPACPI_FAN_RD_ACPI_FANS ? */ switch (fan_status_access_mode) { case TPACPI_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 TPACPI_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 int fan_get_status_safe(u8 *status) { int rc; u8 s; rc = mutex_lock_interruptible(&fan_mutex); if (rc < 0) return rc; rc = fan_get_status(&s); if (!rc) fan_update_desired_level(s); mutex_unlock(&fan_mutex); if (status) *status = s; return rc; } static void fan_exit(void) { vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n"); /* FIXME: can we really do this unconditionally? */ sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group); driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog); 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 TPACPI_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) { int rc; printk(IBM_NOTICE "fan watchdog: enabling fan\n"); rc = fan_set_enable(); if (rc < 0) { printk(IBM_ERR "fan watchdog: error %d while enabling fan, " "will try again later...\n", -rc); /* reschedule for later */ fan_watchdog_reset(); } } static void fan_watchdog_reset(void) { static int fan_watchdog_active = 0; if (fan_control_access_mode == TPACPI_FAN_WR_NONE) return; 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) { if (!fan_control_allowed) return -EPERM; switch (fan_control_access_mode) { case TPACPI_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 TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: if ((level != TP_EC_FAN_AUTO) && (level != TP_EC_FAN_FULLSPEED) && ((level < 0) || (level > 7))) return -EINVAL; /* safety net should the EC not support AUTO * or FULLSPEED mode bits and just ignore them */ if (level & TP_EC_FAN_FULLSPEED) level |= 7; /* safety min speed 7 */ else if (level & TP_EC_FAN_FULLSPEED) level |= 4; /* safety min speed 4 */ if (!acpi_ec_write(fan_status_offset, level)) return -EIO; else tp_features.fan_ctrl_status_undef = 0; break; default: return -ENXIO; } return 0; } static int fan_set_level_safe(int level) { int rc; if (!fan_control_allowed) return -EPERM; rc = mutex_lock_interruptible(&fan_mutex); if (rc < 0) return rc; if (level == TPACPI_FAN_LAST_LEVEL) level = fan_control_desired_level; rc = fan_set_level(level); if (!rc) fan_update_desired_level(level); mutex_unlock(&fan_mutex); return rc; } static int fan_set_enable(void) { u8 s; int rc; if (!fan_control_allowed) return -EPERM; rc = mutex_lock_interruptible(&fan_mutex); if (rc < 0) return rc; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: rc = fan_get_status(&s); if (rc < 0) break; /* Don't go out of emergency fan mode */ if (s != 7) { s &= 0x07; s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ } if (!acpi_ec_write(fan_status_offset, s)) rc = -EIO; else { tp_features.fan_ctrl_status_undef = 0; rc = 0; } break; case TPACPI_FAN_WR_ACPI_SFAN: rc = fan_get_status(&s); if (rc < 0) break; s &= 0x07; /* Set fan to at least level 4 */ s |= 4; if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) rc= -EIO; else rc = 0; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); return rc; } static int fan_set_disable(void) { int rc; if (!fan_control_allowed) return -EPERM; rc = mutex_lock_interruptible(&fan_mutex); if (rc < 0) return rc; rc = 0; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: if (!acpi_ec_write(fan_status_offset, 0x00)) rc = -EIO; else { fan_control_desired_level = 0; tp_features.fan_ctrl_status_undef = 0; } break; case TPACPI_FAN_WR_ACPI_SFAN: if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) rc = -EIO; else fan_control_desired_level = 0; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); return rc; } static int fan_set_speed(int speed) { int rc; if (!fan_control_allowed) return -EPERM; rc = mutex_lock_interruptible(&fan_mutex); if (rc < 0) return rc; rc = 0; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: if (speed >= 0 && speed <= 65535) { if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", speed, speed, speed)) rc = -EIO; } else rc = -EINVAL; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); return rc; } static int fan_read(char *p) { int len = 0; int rc; u8 status; unsigned int speed = 0; switch (fan_status_access_mode) { case TPACPI_FAN_RD_ACPI_GFAN: /* 570, 600e/x, 770e, 770x */ if ((rc = fan_get_status_safe(&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 TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ if ((rc = fan_get_status_safe(&status)) < 0) return rc; if (unlikely(tp_features.fan_ctrl_status_undef)) { if (status != fan_control_initial_status) tp_features.fan_ctrl_status_undef = 0; else /* Return most likely status. In fact, it * might be the only possible status */ status = TP_EC_FAN_AUTO; } len += sprintf(p + len, "status:\t\t%s\n", (status != 0) ? "enabled" : "disabled"); if ((rc = fan_get_speed(&speed)) < 0) return rc; len += sprintf(p + len, "speed:\t\t%d\n", speed); if (status & TP_EC_FAN_FULLSPEED) /* Disengaged mode takes precedence */ len += sprintf(p + len, "level:\t\tdisengaged\n"); else if (status & TP_EC_FAN_AUTO) len += sprintf(p + len, "level:\t\tauto\n"); else len += sprintf(p + len, "level:\t\t%d\n", status); break; case TPACPI_FAN_NONE: default: len += sprintf(p + len, "status:\t\tnot supported\n"); } if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { len += sprintf(p + len, "commands:\tlevel "); switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_SFAN: len += sprintf(p + len, " ( is 0-7)\n"); break; default: len += sprintf(p + len, " ( is 0-7, " "auto, disengaged, full-speed)\n"); break; } } if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) len += sprintf(p + len, "commands:\tenable, disable\n" "commands:\twatchdog ( is 0 (off), " "1-120 (seconds))\n"); if (fan_control_commands & TPACPI_FAN_CMD_SPEED) len += sprintf(p + len, "commands:\tspeed " " ( 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 = TP_EC_FAN_AUTO; else if ((strlencmp(cmd, "level disengaged") == 0) | (strlencmp(cmd, "level full-speed") == 0)) level = TP_EC_FAN_FULLSPEED; else if (sscanf(cmd, "level %d", &level) != 1) return 0; if ((*rc = fan_set_level_safe(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 ? */ 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 & TPACPI_FAN_CMD_LEVEL) && fan_write_cmd_level(cmd, &rc)) && !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && (fan_write_cmd_enable(cmd, &rc) || fan_write_cmd_disable(cmd, &rc) || fan_write_cmd_watchdog(cmd, &rc))) && !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && fan_write_cmd_speed(cmd, &rc)) ) rc = -EINVAL; else if (!rc) fan_watchdog_reset(); } return rc; } static struct ibm_struct fan_driver_data = { .name = "fan", .read = fan_read, .write = fan_write, .exit = fan_exit, }; /**************************************************************************** **************************************************************************** * * Infrastructure * **************************************************************************** ****************************************************************************/ /* /proc support */ static struct proc_dir_entry *proc_dir = NULL; /* Subdriver registry */ static LIST_HEAD(tpacpi_all_drivers); /* * Module and infrastructure proble, init and exit handling */ #ifdef CONFIG_THINKPAD_ACPI_DEBUG static const char * __init str_supported(int is_supported) { static char text_unsupported[] __initdata = "not supported"; return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; } #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ static int __init ibm_init(struct ibm_init_struct *iibm) { int ret; struct ibm_struct *ibm = iibm->data; struct proc_dir_entry *entry; BUG_ON(ibm == NULL); INIT_LIST_HEAD(&ibm->all_drivers); if (ibm->flags.experimental && !experimental) return 0; dbg_printk(TPACPI_DBG_INIT, "probing for %s\n", ibm->name); if (iibm->init) { ret = iibm->init(iibm); if (ret > 0) return 0; /* probe failed */ if (ret) return ret; ibm->flags.init_called = 1; } if (ibm->acpi) { if (ibm->acpi->hid) { ret = register_tpacpi_subdriver(ibm); if (ret) goto err_out; } if (ibm->acpi->notify) { ret = setup_acpi_notify(ibm); if (ret == -ENODEV) { printk(IBM_NOTICE "disabling subdriver %s\n", ibm->name); ret = 0; goto err_out; } if (ret < 0) goto err_out; } } dbg_printk(TPACPI_DBG_INIT, "%s installed\n", ibm->name); 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); ret = -ENODEV; goto err_out; } entry->owner = THIS_MODULE; entry->data = ibm; entry->read_proc = &dispatch_procfs_read; if (ibm->write) entry->write_proc = &dispatch_procfs_write; ibm->flags.proc_created = 1; } list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); return 0; err_out: dbg_printk(TPACPI_DBG_INIT, "%s: at error exit path with result %d\n", ibm->name, ret); ibm_exit(ibm); return (ret < 0)? ret : 0; } static void ibm_exit(struct ibm_struct *ibm) { dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); list_del_init(&ibm->all_drivers); if (ibm->flags.acpi_notify_installed) { dbg_printk(TPACPI_DBG_EXIT, "%s: acpi_remove_notify_handler\n", ibm->name); BUG_ON(!ibm->acpi); acpi_remove_notify_handler(*ibm->acpi->handle, ibm->acpi->type, dispatch_acpi_notify); ibm->flags.acpi_notify_installed = 0; ibm->flags.acpi_notify_installed = 0; } if (ibm->flags.proc_created) { dbg_printk(TPACPI_DBG_EXIT, "%s: remove_proc_entry\n", ibm->name); remove_proc_entry(ibm->name, proc_dir); ibm->flags.proc_created = 0; } if (ibm->flags.acpi_driver_registered) { dbg_printk(TPACPI_DBG_EXIT, "%s: acpi_bus_unregister_driver\n", ibm->name); BUG_ON(!ibm->acpi); acpi_bus_unregister_driver(ibm->acpi->driver); kfree(ibm->acpi->driver); ibm->acpi->driver = NULL; ibm->flags.acpi_driver_registered = 0; } if (ibm->flags.init_called && ibm->exit) { ibm->exit(); ibm->flags.init_called = 0; } dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); } /* Probing */ static char *ibm_thinkpad_ec_found = NULL; static char* __init check_dmi_for_ec(void) { struct dmi_device *dev = NULL; char ec_fw_string[18]; /* * ThinkPad T23 or newer, A31 or newer, R50e or newer, * X32 or newer, all Z series; Some models must have an * up-to-date BIOS or they will not be detected. * * See http://thinkwiki.org/wiki/List_of_DMI_IDs */ while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { if (sscanf(dev->name, "IBM ThinkPad Embedded Controller -[%17c", ec_fw_string) == 1) { ec_fw_string[sizeof(ec_fw_string) - 1] = 0; ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; return kstrdup(ec_fw_string, GFP_KERNEL); } } return NULL; } static int __init probe_for_thinkpad(void) { int is_thinkpad; if (acpi_disabled) return -ENODEV; /* * Non-ancient models have better DMI tagging, but very old models * don't. */ is_thinkpad = dmi_name_in_vendors("ThinkPad"); /* ec is required because many other handles are relative to it */ IBM_ACPIHANDLE_INIT(ec); if (!ec_handle) { if (is_thinkpad) printk(IBM_ERR "Not yet supported ThinkPad detected!\n"); return -ENODEV; } /* * Risks a regression on very old machines, but reduces potential * false positives a damn great deal */ if (!is_thinkpad) is_thinkpad = dmi_name_in_vendors("IBM"); if (!is_thinkpad && !force_load) return -ENODEV; return 0; } /* Module init, exit, parameters */ static struct ibm_init_struct ibms_init[] __initdata = { { .init = thinkpad_acpi_driver_init, .data = &thinkpad_acpi_driver_data, }, { .init = hotkey_init, .data = &hotkey_driver_data, }, { .init = bluetooth_init, .data = &bluetooth_driver_data, }, { .init = wan_init, .data = &wan_driver_data, }, { .init = video_init, .data = &video_driver_data, }, { .init = light_init, .data = &light_driver_data, }, #ifdef CONFIG_THINKPAD_ACPI_DOCK { .init = dock_init, .data = &dock_driver_data[0], }, { .data = &dock_driver_data[1], }, #endif #ifdef CONFIG_THINKPAD_ACPI_BAY { .init = bay_init, .data = &bay_driver_data, }, #endif { .init = cmos_init, .data = &cmos_driver_data, }, { .init = led_init, .data = &led_driver_data, }, { .init = beep_init, .data = &beep_driver_data, }, { .init = thermal_init, .data = &thermal_driver_data, }, { .data = &ecdump_driver_data, }, { .init = brightness_init, .data = &brightness_driver_data, }, { .data = &volume_driver_data, }, { .init = fan_init, .data = &fan_driver_data, }, }; static int __init set_ibm_param(const char *val, struct kernel_param *kp) { unsigned int i; struct ibm_struct *ibm; for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { ibm = ibms_init[i].data; BUG_ON(ibm == NULL); if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { if (strlen(val) > sizeof(ibms_init[i].param) - 2) return -ENOSPC; strcpy(ibms_init[i].param, val); strcat(ibms_init[i].param, ","); return 0; } } return -EINVAL; } static int experimental; module_param(experimental, int, 0); static u32 dbg_level; module_param_named(debug, dbg_level, uint, 0); static int force_load; module_param(force_load, int, 0); static int fan_control_allowed; module_param_named(fan_control, fan_control_allowed, int, 0); #define IBM_PARAM(feature) \ module_param_call(feature, set_ibm_param, NULL, NULL, 0) IBM_PARAM(hotkey); IBM_PARAM(bluetooth); IBM_PARAM(video); IBM_PARAM(light); #ifdef CONFIG_THINKPAD_ACPI_DOCK IBM_PARAM(dock); #endif #ifdef CONFIG_THINKPAD_ACPI_BAY IBM_PARAM(bay); #endif /* CONFIG_THINKPAD_ACPI_BAY */ IBM_PARAM(cmos); IBM_PARAM(led); IBM_PARAM(beep); IBM_PARAM(ecdump); IBM_PARAM(brightness); IBM_PARAM(volume); IBM_PARAM(fan); static int __init thinkpad_acpi_module_init(void) { int ret, i; /* Driver-level probe */ ret = probe_for_thinkpad(); if (ret) return ret; /* Driver initialization */ ibm_thinkpad_ec_found = check_dmi_for_ec(); IBM_ACPIHANDLE_INIT(ecrd); IBM_ACPIHANDLE_INIT(ecwr); proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir); if (!proc_dir) { printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR); thinkpad_acpi_module_exit(); return -ENODEV; } proc_dir->owner = THIS_MODULE; ret = platform_driver_register(&tpacpi_pdriver); if (ret) { printk(IBM_ERR "unable to register platform driver\n"); thinkpad_acpi_module_exit(); return ret; } ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); if (ret) { printk(IBM_ERR "unable to create sysfs driver attributes\n"); thinkpad_acpi_module_exit(); return ret; } /* Device initialization */ tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1, NULL, 0); if (IS_ERR(tpacpi_pdev)) { ret = PTR_ERR(tpacpi_pdev); tpacpi_pdev = NULL; printk(IBM_ERR "unable to register platform device\n"); thinkpad_acpi_module_exit(); return ret; } tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev); if (IS_ERR(tpacpi_hwmon)) { ret = PTR_ERR(tpacpi_hwmon); tpacpi_hwmon = NULL; printk(IBM_ERR "unable to register hwmon device\n"); thinkpad_acpi_module_exit(); return ret; } for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { ret = ibm_init(&ibms_init[i]); if (ret >= 0 && *ibms_init[i].param) ret = ibms_init[i].data->write(ibms_init[i].param); if (ret < 0) { thinkpad_acpi_module_exit(); return ret; } } return 0; } static void thinkpad_acpi_module_exit(void) { struct ibm_struct *ibm, *itmp; list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers) { ibm_exit(ibm); } dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); if (tpacpi_hwmon) hwmon_device_unregister(tpacpi_hwmon); if (tpacpi_pdev) platform_device_unregister(tpacpi_pdev); tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); platform_driver_unregister(&tpacpi_pdriver); if (proc_dir) remove_proc_entry(IBM_PROC_DIR, acpi_root_dir); kfree(ibm_thinkpad_ec_found); } module_init(thinkpad_acpi_module_init); module_exit(thinkpad_acpi_module_exit);