diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/ibm_acpi.c | 1398 |
1 files changed, 757 insertions, 641 deletions
diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c index e2da95498f3..984ec81bd23 100644 --- a/drivers/acpi/ibm_acpi.c +++ b/drivers/acpi/ibm_acpi.c @@ -87,8 +87,17 @@ MODULE_LICENSE("GPL"); #define __unused __attribute__ ((unused)) -static int experimental; -module_param(experimental, int, 0); +/**************************************************************************** + **************************************************************************** + * + * ACPI Helpers and device model + * + **************************************************************************** + ****************************************************************************/ + +/************************************************************************* + * ACPI basic handles + */ static acpi_handle root_handle = NULL; @@ -105,183 +114,31 @@ IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ "\\_SB.PCI0.ICH3.EC0", /* R31 */ "\\_SB.PCI0.LPC.EC", /* all others */ - ); + ); -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(ecrd, ec, "ECRD"); /* 570 */ +IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */ -IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ + +/************************************************************************* + * 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 */ -#ifdef CONFIG_ACPI_IBM_DOCK -IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ - "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ - "\\_SB.PCI0.PCI1.DOCK", /* all others */ - "\\_SB.PCI.ISA.SLCE", /* 570 */ - ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ -#endif -#ifdef CONFIG_ACPI_IBM_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 */ -#endif /* CONFIG_ACPI_IBM_BAY */ - -/* don't list other alternatives as we install a notify handler on the 570 */ -IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ + ); /* all others */ IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ "^HKEY", /* R30, R31 */ "HKEY", /* all others */ - ); /* 570 */ + ); /* 570 */ -IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ -IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */ -IBM_HANDLE(led, ec, "SLED", /* 570 */ - "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ - "LED", /* all others */ - ); /* R30, R31 */ - -IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ -IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */ -IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */ -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 */ - -/* - * FAN ACCESS MODES - * - * IBMACPI_FAN_RD_ACPI_GFAN: - * ACPI GFAN method: returns fan level - * - * see IBMACPI_FAN_WR_ACPI_SFAN - * EC 0x2f not available if GFAN exists - * - * IBMACPI_FAN_WR_ACPI_SFAN: - * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) - * - * EC 0x2f might be available *for reading*, but never for writing. - * - * IBMACPI_FAN_WR_TPEC: - * ThinkPad EC register 0x2f (HFSP): fan control loop mode Supported - * on almost all ThinkPads - * - * Fan speed changes of any sort (including those caused by the - * disengaged mode) are usually done slowly by the firmware as the - * maximum ammount of fan duty cycle change per second seems to be - * limited. - * - * Reading is not available if GFAN exists. - * Writing is not available if SFAN exists. - * - * Bits - * 7 automatic mode engaged; - * (default operation mode of the ThinkPad) - * fan level is ignored in this mode. - * 6 disengage mode (takes precedence over bit 7); - * not available on all thinkpads. May disable - * the tachometer, and speeds up fan to 100% duty-cycle, - * which speeds it up far above the standard RPM - * levels. It is not impossible that it could cause - * hardware damage. - * 5-3 unused in some models. Extra bits for fan level - * in others, but still useless as all values above - * 7 map to the same speed as level 7 in these models. - * 2-0 fan level (0..7 usually) - * 0x00 = stop - * 0x07 = max (set when temperatures critical) - * Some ThinkPads may have other levels, see - * IBMACPI_FAN_WR_ACPI_FANS (X31/X40/X41) - * - * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at - * boot. Apparently the EC does not intialize it, so unless ACPI DSDT - * does so, its initial value is meaningless (0x07). - * - * For firmware bugs, refer to: - * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues - * - * ---- - * - * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): - * Main fan tachometer reading (in RPM) - * - * This register is present on all ThinkPads with a new-style EC, and - * it is known not to be present on the A21m/e, and T22, as there is - * something else in offset 0x84 according to the ACPI DSDT. Other - * ThinkPads from this same time period (and earlier) probably lack the - * tachometer as well. - * - * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare - * was never fixed by IBM to report the EC firmware version string - * probably support the tachometer (like the early X models), so - * detecting it is quite hard. We need more data to know for sure. - * - * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings - * might result. - * - * FIRMWARE BUG: when EC 0x2f bit 6 is set (disengaged mode), this - * register is not invalidated in ThinkPads that disable tachometer - * readings. Thus, the tachometer readings go stale. - * - * For firmware bugs, refer to: - * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues - * - * IBMACPI_FAN_WR_ACPI_FANS: - * ThinkPad X31, X40, X41. Not available in the X60. - * - * FANS ACPI handle: takes three arguments: low speed, medium speed, - * high speed. ACPI DSDT seems to map these three speeds to levels - * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH - * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") - * - * The speeds are stored on handles - * (FANA:FAN9), (FANC:FANB), (FANE:FAND). - * - * There are three default speed sets, acessible as handles: - * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H - * - * ACPI DSDT switches which set is in use depending on various - * factors. - * - * IBMACPI_FAN_WR_TPEC is also available and should be used to - * command the fan. The X31/X40/X41 seems to have 8 fan levels, - * but the ACPI tables just mention level 7. +/************************************************************************* + * ACPI helpers */ -static char *ibm_thinkpad_ec_found = NULL; - -static struct proc_dir_entry *proc_dir = NULL; - -static struct backlight_device *ibm_backlight_device = NULL; - static int acpi_evalf(acpi_handle handle, void *res, char *method, char *fmt, ...) { @@ -371,6 +228,203 @@ static void __unused acpi_print_int(acpi_handle handle, char *method) 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; +} + +/************************************************************************* + * ACPI device model + */ + +static void __init ibm_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_notify(acpi_handle handle, u32 event, void *data) +{ + struct ibm_struct *ibm = data; + + if (!ibm || !ibm->notify) + return; + + ibm->notify(ibm, event); +} + +static int __init 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 -ENODEV; + } + + 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)) { + 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->notify_installed = 1; + return 0; +} + +static int __init ibm_device_add(struct acpi_device *device) +{ + return 0; +} + +static int __init register_ibmacpi_subdriver(struct ibm_struct *ibm) +{ + int ret; + + ibm->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); + if (!ibm->driver) { + printk(IBM_ERR "kmalloc(ibm->driver) failed\n"); + return -1; + } + + sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name); + ibm->driver->ids = ibm->hid; + ibm->driver->ops.add = &ibm_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; +} + + +/**************************************************************************** + **************************************************************************** + * + * Procfs Helpers + * + **************************************************************************** + ****************************************************************************/ + +static int dispatch_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_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; @@ -387,6 +441,19 @@ static char *next_cmd(char **cmds) return start; } + +/**************************************************************************** + **************************************************************************** + * + * Subdrivers + * + **************************************************************************** + ****************************************************************************/ + +/************************************************************************* + * ibm-acpi init subdriver + */ + static int ibm_acpi_driver_init(void) { printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION); @@ -409,11 +476,51 @@ static int ibm_acpi_driver_read(char *p) return len; } +/************************************************************************* + * Hotkey subdriver + */ + static int hotkey_supported; static int hotkey_mask_supported; static int hotkey_orig_status; static int hotkey_orig_mask; +static int hotkey_init(void) +{ + /* hotkey not supported on 570 */ + hotkey_supported = hkey_handle != NULL; + + if (hotkey_supported) { + /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, + A30, R30, R31, T20-22, X20-21, X22-24 */ + hotkey_mask_supported = + acpi_evalf(hkey_handle, NULL, "DHKN", "qv"); + + if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask)) + return -ENODEV; + } + + return 0; +} + +static void hotkey_exit(void) +{ + if (hotkey_supported) + hotkey_set(hotkey_orig_status, hotkey_orig_mask); +} + +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->device, event, hkey); + else { + printk(IBM_ERR "unknown hotkey event %d\n", event); + acpi_bus_generate_event(ibm->device, event, 0); + } +} + static int hotkey_get(int *status, int *mask) { if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) @@ -444,24 +551,6 @@ static int hotkey_set(int status, int mask) return 1; } -static int hotkey_init(void) -{ - /* hotkey not supported on 570 */ - hotkey_supported = hkey_handle != NULL; - - if (hotkey_supported) { - /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, - A30, R30, R31, T20-22, X20-21, X22-24 */ - hotkey_mask_supported = - acpi_evalf(hkey_handle, NULL, "DHKN", "qv"); - - if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask)) - return -ENODEV; - } - - return 0; -} - static int hotkey_read(char *p) { int status, mask; @@ -523,23 +612,9 @@ static int hotkey_write(char *buf) return 0; } -static void hotkey_exit(void) -{ - if (hotkey_supported) - hotkey_set(hotkey_orig_status, hotkey_orig_mask); -} - -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->device, event, hkey); - else { - printk(IBM_ERR "unknown hotkey event %d\n", event); - acpi_bus_generate_event(ibm->device, event, 0); - } -} +/************************************************************************* + * Bluetooth subdriver + */ static int bluetooth_supported; @@ -606,6 +681,10 @@ static int bluetooth_write(char *buf) return 0; } +/************************************************************************* + * Wan subdriver + */ + static int wan_supported; static int wan_init(void) @@ -668,9 +747,22 @@ static int wan_write(char *buf) return 0; } +/************************************************************************* + * Video subdriver + */ + static enum video_access_mode video_supported; static int video_orig_autosw; +IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ + "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ + "\\_SB.PCI0.VID0", /* 770e */ + "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ + "\\_SB.PCI0.AGP.VID", /* all others */ + ); /* R30, R31 */ + +IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ + static int video_init(void) { int ivga; @@ -695,6 +787,11 @@ static int video_init(void) return 0; } +static void video_exit(void) +{ + acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw); +} + static int video_status(void) { int status = 0; @@ -736,33 +833,6 @@ static int video_autosw(void) return autosw & 1; } -static int video_read(char *p) -{ - int status = video_status(); - int autosw = video_autosw(); - int len = 0; - - if (!video_supported) { - len += sprintf(p + len, "status:\t\tnot supported\n"); - return len; - } - - len += sprintf(p + len, "status:\t\tsupported\n"); - len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); - len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); - if (video_supported == IBMACPI_VIDEO_NEW) - len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); - len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); - len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); - len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); - if (video_supported == IBMACPI_VIDEO_NEW) - len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); - len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); - len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); - - return len; -} - static int video_switch(void) { int autosw = video_autosw(); @@ -812,6 +882,33 @@ static int video_switch2(int status) return ret; } +static int video_read(char *p) +{ + int status = video_status(); + int autosw = video_autosw(); + int len = 0; + + if (!video_supported) { + len += sprintf(p + len, "status:\t\tnot supported\n"); + return len; + } + + len += sprintf(p + len, "status:\t\tsupported\n"); + len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); + len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); + if (video_supported == IBMACPI_VIDEO_NEW) + len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); + len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); + len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); + len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); + if (video_supported == IBMACPI_VIDEO_NEW) + len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); + len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); + len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); + + return len; +} + static int video_write(char *buf) { char *cmd; @@ -862,14 +959,16 @@ static int video_write(char *buf) return 0; } -static void video_exit(void) -{ - acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw); -} +/************************************************************************* + * Light (thinklight) subdriver + */ static int light_supported; static int light_status_supported; +IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ +IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */ + static int light_init(void) { /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ @@ -933,21 +1032,45 @@ static int light_write(char *buf) return 0; } -#if defined(CONFIG_ACPI_IBM_DOCK) || defined(CONFIG_ACPI_IBM_BAY) -static int _sta(acpi_handle handle) -{ - int status; - - if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) - status = 0; +/************************************************************************* + * Dock subdriver + */ - return status; -} -#endif +/* don't list other alternatives as we install a notify handler on the 570 */ +IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ #ifdef CONFIG_ACPI_IBM_DOCK + +IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ + "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ + "\\_SB.PCI0.PCI1.DOCK", /* all others */ + "\\_SB.PCI.ISA.SLCE", /* 570 */ + ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ + #define dock_docked() (_sta(dock_handle) & 1) +static void dock_notify(struct ibm_struct *ibm, u32 event) +{ + int docked = dock_docked(); + int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID); + + if (event == 1 && !pci) /* 570 */ + acpi_bus_generate_event(ibm->device, event, 1); /* button */ + else if (event == 1 && pci) /* 570 */ + acpi_bus_generate_event(ibm->device, event, 3); /* dock */ + else if (event == 3 && docked) + acpi_bus_generate_event(ibm->device, event, 1); /* button */ + else if (event == 3 && !docked) + acpi_bus_generate_event(ibm->device, event, 2); /* undock */ + else if (event == 0 && docked) + acpi_bus_generate_event(ibm->device, event, 3); /* dock */ + else { + printk(IBM_ERR "unknown dock event %d, status %d\n", + event, _sta(dock_handle)); + acpi_bus_generate_event(ibm->device, event, 0); /* unknown */ + } +} + static int dock_read(char *p) { int len = 0; @@ -987,28 +1110,11 @@ static int dock_write(char *buf) return 0; } -static void dock_notify(struct ibm_struct *ibm, u32 event) -{ - int docked = dock_docked(); - int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID); +#endif /* CONFIG_ACPI_IBM_DOCK */ - if (event == 1 && !pci) /* 570 */ - acpi_bus_generate_event(ibm->device, event, 1); /* button */ - else if (event == 1 && pci) /* 570 */ - acpi_bus_generate_event(ibm->device, event, 3); /* dock */ - else if (event == 3 && docked) - acpi_bus_generate_event(ibm->device, event, 1); /* button */ - else if (event == 3 && !docked) - acpi_bus_generate_event(ibm->device, event, 2); /* undock */ - else if (event == 0 && docked) - acpi_bus_generate_event(ibm->device, event, 3); /* dock */ - else { - printk(IBM_ERR "unknown dock event %d, status %d\n", - event, _sta(dock_handle)); - acpi_bus_generate_event(ibm->device, event, 0); /* unknown */ - } -} -#endif +/************************************************************************* + * Bay subdriver + */ #ifdef CONFIG_ACPI_IBM_BAY static int bay_status_supported; @@ -1016,6 +1122,21 @@ static int bay_status2_supported; static int bay_eject_supported; static int bay_eject2_supported; +IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ + "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ + "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ + "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ + ); /* A21e, R30, R31 */ +IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ + "_EJ0", /* all others */ + ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ +IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ + "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ + ); /* all others */ +IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ + "_EJ0", /* 770x */ + ); /* all others */ + static int bay_init(void) { bay_status_supported = bay_handle && @@ -1031,6 +1152,11 @@ static int bay_init(void) return 0; } +static void bay_notify(struct ibm_struct *ibm, u32 event) +{ + acpi_bus_generate_event(ibm->device, event, 0); +} + #define bay_occupied(b) (_sta(b##_handle) & 1) static int bay_read(char *p) @@ -1081,12 +1207,19 @@ static int bay_write(char *buf) return 0; } +#endif /* CONFIG_ACPI_IBM_BAY */ -static void bay_notify(struct ibm_struct *ibm, u32 event) +/************************************************************************* + * CMOS subdriver + */ + +static int cmos_eval(int cmos_cmd) { - acpi_bus_generate_event(ibm->device, event, 0); + if (cmos_handle) + return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd); + else + return 1; } -#endif /* CONFIG_ACPI_IBM_BAY */ static int cmos_read(char *p) { @@ -1104,14 +1237,6 @@ static int cmos_read(char *p) return len; } -static int cmos_eval(int cmos_cmd) -{ - if (cmos_handle) - return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd); - else - return 1; -} - static int cmos_write(char *buf) { char *cmd; @@ -1134,8 +1259,18 @@ static int cmos_write(char *buf) return 0; } + +/************************************************************************* + * LED subdriver + */ + static enum led_access_mode led_supported; +IBM_HANDLE(led, ec, "SLED", /* 570 */ + "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ + "LED", /* all others */ + ); /* R30, R31 */ + static int led_init(void) { if (!led_handle) @@ -1242,6 +1377,12 @@ static int led_write(char *buf) return 0; } +/************************************************************************* + * Beep subdriver + */ + +IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ + static int beep_read(char *p) { int len = 0; @@ -1277,34 +1418,9 @@ static int beep_write(char *buf) return 0; } -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; -} +/************************************************************************* + * Thermal subdriver + */ static enum thermal_access_mode thermal_read_mode; @@ -1446,6 +1562,10 @@ static int thermal_read(char *p) return len; } +/************************************************************************* + * EC Dump subdriver + */ + static u8 ecdump_regs[256]; static int ecdump_read(char *p) @@ -1505,6 +1625,55 @@ static int ecdump_write(char *buf) return 0; } +/************************************************************************* + * Backlight/brightness subdriver + */ + +static struct backlight_device *ibm_backlight_device = NULL; + +static struct backlight_ops ibm_backlight_data = { + .get_brightness = brightness_get, + .update_status = brightness_update_status, +}; + +static int brightness_init(void) +{ + int b; + + b = brightness_get(NULL); + if (b < 0) + return b; + + ibm_backlight_device = backlight_device_register("ibm", NULL, NULL, + &ibm_backlight_data); + if (IS_ERR(ibm_backlight_device)) { + printk(IBM_ERR "Could not register backlight device\n"); + return PTR_ERR(ibm_backlight_device); + } + + ibm_backlight_device->props.max_brightness = 7; + ibm_backlight_device->props.brightness = b; + backlight_update_status(ibm_backlight_device); + + return 0; +} + +static void brightness_exit(void) +{ + if (ibm_backlight_device) { + backlight_device_unregister(ibm_backlight_device); + ibm_backlight_device = NULL; + } +} + +static int brightness_update_status(struct backlight_device *bd) +{ + return brightness_set( + (bd->props.fb_blank == FB_BLANK_UNBLANK && + bd->props.power == FB_BLANK_UNBLANK) ? + bd->props.brightness : 0); +} + static int brightness_get(struct backlight_device *bd) { u8 level; @@ -1516,23 +1685,6 @@ static int brightness_get(struct backlight_device *bd) return level; } -static int brightness_read(char *p) -{ - int len = 0; - int level; - - if ((level = brightness_get(NULL)) < 0) { - len += sprintf(p + len, "level:\t\tunreadable\n"); - } else { - len += sprintf(p + len, "level:\t\t%d\n", level & 0x7); - len += sprintf(p + len, "commands:\tup, down\n"); - len += sprintf(p + len, "commands:\tlevel <level>" - " (<level> is 0-7)\n"); - } - - return len; -} - static int brightness_set(int value) { int cmos_cmd, inc, i; @@ -1540,8 +1692,7 @@ static int brightness_set(int value) value &= 7; - cmos_cmd = value > current_value ? - TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN; + cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN; inc = value > current_value ? 1 : -1; for (i = current_value; i != value; i += inc) { if (!cmos_eval(cmos_cmd)) @@ -1553,6 +1704,23 @@ static int brightness_set(int value) return 0; } +static int brightness_read(char *p) +{ + int len = 0; + int level; + + if ((level = brightness_get(NULL)) < 0) { + len += sprintf(p + len, "level:\t\tunreadable\n"); + } else { + len += sprintf(p + len, "level:\t\t%d\n", level & 0x7); + len += sprintf(p + len, "commands:\tup, down\n"); + len += sprintf(p + len, "commands:\tlevel <level>" + " (<level> is 0-7)\n"); + } + + return len; +} + static int brightness_write(char *buf) { int level; @@ -1580,48 +1748,9 @@ static int brightness_write(char *buf) return 0; } -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 struct backlight_ops ibm_backlight_data = { - .get_brightness = brightness_get, - .update_status = brightness_update_status, -}; - -static int brightness_init(void) -{ - int b; - - b = brightness_get(NULL); - if (b < 0) - return b; - - ibm_backlight_device = backlight_device_register("ibm", NULL, NULL, - &ibm_backlight_data); - if (IS_ERR(ibm_backlight_device)) { - printk(IBM_ERR "Could not register backlight device\n"); - return PTR_ERR(ibm_backlight_device); - } - - ibm_backlight_device->props.max_brightness = 7; - ibm_backlight_device->props.brightness = b; - backlight_update_status(ibm_backlight_device); - - return 0; -} - -static void brightness_exit(void) -{ - if (ibm_backlight_device) { - backlight_device_unregister(ibm_backlight_device); - ibm_backlight_device = NULL; - } -} +/************************************************************************* + * Volume subdriver + */ static int volume_read(char *p) { @@ -1673,8 +1802,7 @@ static int volume_write(char *buf) return -EINVAL; if (new_level != level) { /* mute doesn't change */ - cmos_cmd = new_level > level ? - TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; + cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; inc = new_level > level ? 1 : -1; if (mute && (!cmos_eval(cmos_cmd) || @@ -1693,8 +1821,7 @@ static int volume_write(char *buf) } if (new_mute != mute) { /* level doesn't change */ - cmos_cmd = new_mute ? - TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; + cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; if (!cmos_eval(cmos_cmd) || !acpi_ec_write(volume_offset, level + new_mute)) @@ -1705,6 +1832,111 @@ static int volume_write(char *buf) return 0; } + +/************************************************************************* + * Fan subdriver + */ + +/* + * FAN ACCESS MODES + * + * IBMACPI_FAN_RD_ACPI_GFAN: + * ACPI GFAN method: returns fan level + * + * see IBMACPI_FAN_WR_ACPI_SFAN + * EC 0x2f not available if GFAN exists + * + * IBMACPI_FAN_WR_ACPI_SFAN: + * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) + * + * EC 0x2f might be available *for reading*, but never for writing. + * + * IBMACPI_FAN_WR_TPEC: + * ThinkPad EC register 0x2f (HFSP): fan control loop mode Supported + * on almost all ThinkPads + * + * Fan speed changes of any sort (including those caused by the + * disengaged mode) are usually done slowly by the firmware as the + * maximum ammount of fan duty cycle change per second seems to be + * limited. + * + * Reading is not available if GFAN exists. + * Writing is not available if SFAN exists. + * + * Bits + * 7 automatic mode engaged; + * (default operation mode of the ThinkPad) + * fan level is ignored in this mode. + * 6 disengage mode (takes precedence over bit 7); + * not available on all thinkpads. May disable + * the tachometer, and speeds up fan to 100% duty-cycle, + * which speeds it up far above the standard RPM + * levels. It is not impossible that it could cause + * hardware damage. + * 5-3 unused in some models. Extra bits for fan level + * in others, but still useless as all values above + * 7 map to the same speed as level 7 in these models. + * 2-0 fan level (0..7 usually) + * 0x00 = stop + * 0x07 = max (set when temperatures critical) + * Some ThinkPads may have other levels, see + * IBMACPI_FAN_WR_ACPI_FANS (X31/X40/X41) + * + * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at + * boot. Apparently the EC does not intialize it, so unless ACPI DSDT + * does so, its initial value is meaningless (0x07). + * + * For firmware bugs, refer to: + * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues + * + * ---- + * + * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): + * Main fan tachometer reading (in RPM) + * + * This register is present on all ThinkPads with a new-style EC, and + * it is known not to be present on the A21m/e, and T22, as there is + * something else in offset 0x84 according to the ACPI DSDT. Other + * ThinkPads from this same time period (and earlier) probably lack the + * tachometer as well. + * + * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare + * was never fixed by IBM to report the EC firmware version string + * probably support the tachometer (like the early X models), so + * detecting it is quite hard. We need more data to know for sure. + * + * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings + * might result. + * + * FIRMWARE BUG: when EC 0x2f bit 6 is set (disengaged mode), this + * register is not invalidated in ThinkPads that disable tachometer + * readings. Thus, the tachometer readings go stale. + * + * For firmware bugs, refer to: + * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues + * + * IBMACPI_FAN_WR_ACPI_FANS: + * ThinkPad X31, X40, X41. Not available in the X60. + * + * FANS ACPI handle: takes three arguments: low speed, medium speed, + * high speed. ACPI DSDT seems to map these three speeds to levels + * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH + * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") + * + * The speeds are stored on handles + * (FANA:FAN9), (FANC:FANB), (FANE:FAND). + * + * There are three default speed sets, acessible as handles: + * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H + * + * ACPI DSDT switches which set is in use depending on various + * factors. + * + * IBMACPI_FAN_WR_TPEC is also available and should be used to + * command the fan. The X31/X40/X41 seems to have 8 fan levels, + * but the ACPI tables just mention level 7. + */ + static enum fan_status_access_mode fan_status_access_mode; static enum fan_control_access_mode fan_control_access_mode; static enum fan_control_commands fan_control_commands; @@ -1716,6 +1948,14 @@ static void fan_watchdog_fire(struct work_struct *ignored); static int fan_watchdog_maxinterval; static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); +IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ +IBM_HANDLE(gfan, ec, "GFAN", /* 570 */ + "\\FSPD", /* 600e/x, 770e, 770x */ + ); /* all others */ +IBM_HANDLE(sfan, ec, "SFAN", /* 570 */ + "JFNS", /* 770x-JL */ + ); /* all others */ + static int fan_init(void) { fan_status_access_mode = IBMACPI_FAN_NONE; @@ -1831,6 +2071,12 @@ static int fan_get_status(u8 *status) return 0; } +static void fan_exit(void) +{ + cancel_delayed_work(&fan_watchdog_task); + flush_scheduled_work(); +} + static int fan_get_speed(unsigned int *speed) { u8 hi, lo; @@ -1854,10 +2100,14 @@ static int fan_get_speed(unsigned int *speed) return 0; } -static void fan_exit(void) +static void fan_watchdog_fire(struct work_struct *ignored) { - cancel_delayed_work(&fan_watchdog_task); - flush_scheduled_work(); + printk(IBM_NOTICE "fan watchdog: enabling fan\n"); + if (fan_set_enable()) { + printk(IBM_ERR "fan watchdog: error while enabling fan\n"); + /* reschedule for later */ + fan_watchdog_reset(); + } } static void fan_watchdog_reset(void) @@ -1879,90 +2129,6 @@ static void fan_watchdog_reset(void) fan_watchdog_active = 0; } -static int fan_read(char *p) -{ - int len = 0; - int rc; - u8 status; - unsigned int speed = 0; - - switch (fan_status_access_mode) { - case IBMACPI_FAN_RD_ACPI_GFAN: - /* 570, 600e/x, 770e, 770x */ - if ((rc = fan_get_status(&status)) < 0) - return rc; - - len += sprintf(p + len, "status:\t\t%s\n" - "level:\t\t%d\n", - (status != 0) ? "enabled" : "disabled", status); - break; - - case IBMACPI_FAN_RD_TPEC: - /* all except 570, 600e/x, 770e, 770x */ - if ((rc = fan_get_status(&status)) < 0) - return rc; - - if (unlikely(!fan_control_status_known)) { - if (status != fan_control_initial_status) - fan_control_status_known = 1; - else - /* Return most likely status. In fact, it - * might be the only possible status */ - status = IBMACPI_FAN_EC_AUTO; - } - - len += sprintf(p + len, "status:\t\t%s\n", - (status != 0) ? "enabled" : "disabled"); - - /* No ThinkPad boots on disengaged mode, we can safely - * assume the tachometer is online if fan control status - * was unknown */ - if ((rc = fan_get_speed(&speed)) < 0) - return rc; - - len += sprintf(p + len, "speed:\t\t%d\n", speed); - - if (status & IBMACPI_FAN_EC_DISENGAGED) - /* Disengaged mode takes precedence */ - len += sprintf(p + len, "level:\t\tdisengaged\n"); - else if (status & IBMACPI_FAN_EC_AUTO) - len += sprintf(p + len, "level:\t\tauto\n"); - else - len += sprintf(p + len, "level:\t\t%d\n", status); - break; - - case IBMACPI_FAN_NONE: - default: - len += sprintf(p + len, "status:\t\tnot supported\n"); - } - - if (fan_control_commands & IBMACPI_FAN_CMD_LEVEL) { - len += sprintf(p + len, "commands:\tlevel <level>"); - - switch (fan_control_access_mode) { - case IBMACPI_FAN_WR_ACPI_SFAN: - len += sprintf(p + len, " (<level> is 0-7)\n"); - break; - - default: - len += sprintf(p + len, " (<level> is 0-7, " - "auto, disengaged)\n"); - break; - } - } - - if (fan_control_commands & IBMACPI_FAN_CMD_ENABLE) - len += sprintf(p + len, "commands:\tenable, disable\n" - "commands:\twatchdog <timeout> (<timeout> is 0 (off), " - "1-120 (seconds))\n"); - - if (fan_control_commands & IBMACPI_FAN_CMD_SPEED) - len += sprintf(p + len, "commands:\tspeed <speed>" - " (<speed> is 0-65535)\n"); - - return len; -} - static int fan_set_level(int level) { switch (fan_control_access_mode) { @@ -2074,6 +2240,90 @@ static int fan_set_speed(int speed) return 0; } +static int fan_read(char *p) +{ + int len = 0; + int rc; + u8 status; + unsigned int speed = 0; + + switch (fan_status_access_mode) { + case IBMACPI_FAN_RD_ACPI_GFAN: + /* 570, 600e/x, 770e, 770x */ + if ((rc = fan_get_status(&status)) < 0) + return rc; + + len += sprintf(p + len, "status:\t\t%s\n" + "level:\t\t%d\n", + (status != 0) ? "enabled" : "disabled", status); + break; + + case IBMACPI_FAN_RD_TPEC: + /* all except 570, 600e/x, 770e, 770x */ + if ((rc = fan_get_status(&status)) < 0) + return rc; + + if (unlikely(!fan_control_status_known)) { + if (status != fan_control_initial_status) + fan_control_status_known = 1; + else + /* Return most likely status. In fact, it + * might be the only possible status */ + status = IBMACPI_FAN_EC_AUTO; + } + + len += sprintf(p + len, "status:\t\t%s\n", + (status != 0) ? "enabled" : "disabled"); + + /* No ThinkPad boots on disengaged mode, we can safely + * assume the tachometer is online if fan control status + * was unknown */ + if ((rc = fan_get_speed(&speed)) < 0) + return rc; + + len += sprintf(p + len, "speed:\t\t%d\n", speed); + + if (status & IBMACPI_FAN_EC_DISENGAGED) + /* Disengaged mode takes precedence */ + len += sprintf(p + len, "level:\t\tdisengaged\n"); + else if (status & IBMACPI_FAN_EC_AUTO) + len += sprintf(p + len, "level:\t\tauto\n"); + else + len += sprintf(p + len, "level:\t\t%d\n", status); + break; + + case IBMACPI_FAN_NONE: + default: + len += sprintf(p + len, "status:\t\tnot supported\n"); + } + + if (fan_control_commands & IBMACPI_FAN_CMD_LEVEL) { + len += sprintf(p + len, "commands:\tlevel <level>"); + + switch (fan_control_access_mode) { + case IBMACPI_FAN_WR_ACPI_SFAN: + len += sprintf(p + len, " (<level> is 0-7)\n"); + break; + + default: + len += sprintf(p + len, " (<level> is 0-7, " + "auto, disengaged)\n"); + break; + } + } + + if (fan_control_commands & IBMACPI_FAN_CMD_ENABLE) + len += sprintf(p + len, "commands:\tenable, disable\n" + "commands:\twatchdog <timeout> (<timeout> is 0 (off), " + "1-120 (seconds))\n"); + + if (fan_control_commands & IBMACPI_FAN_CMD_SPEED) + len += sprintf(p + len, "commands:\tspeed <speed>" + " (<speed> is 0-65535)\n"); + + return len; +} + static int fan_write_cmd_level(const char *cmd, int *rc) { int level; @@ -2171,16 +2421,18 @@ static int fan_write(char *buf) return rc; } -static void fan_watchdog_fire(struct work_struct *ignored) -{ - printk(IBM_NOTICE "fan watchdog: enabling fan\n"); - if (fan_set_enable()) { - printk(IBM_ERR "fan watchdog: error while enabling fan\n"); - /* reschedule for later */ - fan_watchdog_reset(); - } -} +/**************************************************************************** + **************************************************************************** + * + * Infrastructure + * + **************************************************************************** + ****************************************************************************/ + +/* /proc support */ +static struct proc_dir_entry *proc_dir = NULL; +/* Subdriver registry */ static struct ibm_struct ibms[] = { { .name = "driver", @@ -2301,132 +2553,9 @@ static struct ibm_struct ibms[] = { }, }; -static int dispatch_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_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 void dispatch_notify(acpi_handle handle, u32 event, void *data) -{ - struct ibm_struct *ibm = data; - - if (!ibm || !ibm->notify) - return; - - ibm->notify(ibm, event); -} - -static int __init 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 -ENODEV; - } - - 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)) { - 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->notify_installed = 1; - return 0; -} - -static int __init ibm_device_add(struct acpi_device *device) -{ - return 0; -} - -static int __init register_ibmacpi_subdriver(struct ibm_struct *ibm) -{ - int ret; - - ibm->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); - if (!ibm->driver) { - printk(IBM_ERR "kmalloc(ibm->driver) failed\n"); - return -1; - } - - sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name); - ibm->driver->ids = ibm->hid; - ibm->driver->ops.add = &ibm_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; -} +/* + * Module and infrastructure proble, init and exit handling + */ static int __init ibm_init(struct ibm_struct *ibm) { @@ -2500,27 +2629,35 @@ static void ibm_exit(struct ibm_struct *ibm) } } -static void __init ibm_handle_init(char *name, - acpi_handle * handle, acpi_handle parent, - char **paths, int num_paths, char **path) +/* Probing */ + +static char *ibm_thinkpad_ec_found = NULL; + +static char* __init check_dmi_for_ec(void) { - int i; - acpi_status status; + struct dmi_device *dev = NULL; + char ec_fw_string[18]; - for (i = 0; i < num_paths; i++) { - status = acpi_get_handle(parent, paths[i], handle); - if (ACPI_SUCCESS(status)) { - *path = paths[i]; - return; + /* + * 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); } } - - *handle = NULL; + return NULL; } -#define IBM_HANDLE_INIT(object) \ - ibm_handle_init(#object, &object##_handle, *object##_parent, \ - object##_paths, ARRAY_SIZE(object##_paths), &object##_path) +/* Module init, exit, parameters */ static int __init set_ibm_param(const char *val, struct kernel_param *kp) { @@ -2538,6 +2675,9 @@ static int __init set_ibm_param(const char *val, struct kernel_param *kp) return -EINVAL; } +static int experimental; +module_param(experimental, int, 0); + #define IBM_PARAM(feature) \ module_param_call(feature, set_ibm_param, NULL, NULL, 0) @@ -2559,44 +2699,6 @@ IBM_PARAM(brightness); IBM_PARAM(volume); IBM_PARAM(fan); -static void acpi_ibm_exit(void) -{ - int i; - - for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--) - ibm_exit(&ibms[i]); - - if (proc_dir) - remove_proc_entry(IBM_DIR, acpi_root_dir); - - if (ibm_thinkpad_ec_found) - kfree(ibm_thinkpad_ec_found); -} - -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 acpi_ibm_init(void) { int ret, i; @@ -2662,5 +2764,19 @@ static int __init acpi_ibm_init(void) return 0; } +static void acpi_ibm_exit(void) +{ + int i; + + for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--) + ibm_exit(&ibms[i]); + + if (proc_dir) + remove_proc_entry(IBM_DIR, acpi_root_dir); + + if (ibm_thinkpad_ec_found) + kfree(ibm_thinkpad_ec_found); +} + module_init(acpi_ibm_init); module_exit(acpi_ibm_exit); |