Index: linux/drivers/acpi/ibm_acpi.c =================================================================== --- /dev/null +++ linux/drivers/acpi/ibm_acpi.c @@ -0,0 +1,1242 @@ +/* + * ibm_acpi.c - IBM ThinkPad ACPI Extras + * + * + * Copyright (C) 2004 Borislav Deianov + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Changelog: + * + * 2004-08-09 0.1 initial release, support for X series + * 2004-08-14 0.2 support for T series, X20 + * bluetooth enable/disable + * hotkey events disabled by default + * removed fan control, currently useless + * 2004-08-17 0.3 support for R40 + * lcd off, brightness control + * thinklight on/off + * 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 + * 2004-10-18 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 + * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device + * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20 + * fix LED control on A21e + * 2004-11-08 0.8 fix init error case, don't return from a macro + * thanks to Chris Wright + */ + +#define IBM_VERSION "0.8" + +#include +#include +#include +#include +#include +#include + +#include +#include + +#define IBM_NAME "ibm" +#define IBM_DESC "IBM ThinkPad ACPI Extras" +#define IBM_FILE "ibm_acpi" +#define IBM_URL "http://ibm-acpi.sf.net/" + +#define IBM_DIR IBM_NAME + +#define IBM_LOG IBM_FILE ": " +#define IBM_ERR KERN_ERR IBM_LOG +#define IBM_NOTICE KERN_NOTICE IBM_LOG +#define IBM_INFO KERN_INFO IBM_LOG +#define IBM_DEBUG KERN_DEBUG IBM_LOG + +#define IBM_MAX_ACPI_ARGS 3 + +#define __unused __attribute__ ((unused)) + +static int experimental; +module_param(experimental, int, 0); + +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##_paths[] = { paths } + +IBM_HANDLE(ec, root, + "\\_SB.PCI0.ISA.EC", /* A21e, A22p, T20, T21, X20 */ + "\\_SB.PCI0.LPC.EC", /* all others */ +); + +IBM_HANDLE(vid, root, + "\\_SB.PCI0.VID", /* A21e, G40, X30, X40 */ + "\\_SB.PCI0.AGP.VID", /* all others */ +); + +IBM_HANDLE(cmos, root, + "\\UCMS", /* R50, R50p, R51, T4x, X31, X40 */ + "\\CMOS", /* A3x, G40, R32, T23, T30, X22, X24, X30 */ + "\\CMS", /* R40, R40e */ +); /* A21e, A22p, T20, T21, X20 */ + +IBM_HANDLE(dock, root, + "\\_SB.GDCK", /* X30, X31, X40 */ + "\\_SB.PCI0.DOCK", /* A22p, T20, T21, X20 */ + "\\_SB.PCI0.PCI1.DOCK", /* all others */ +); /* A21e, G40, R32, R40, R40e */ + +IBM_HANDLE(bay, root, + "\\_SB.PCI0.IDE0.SCND.MSTR"); /* all except A21e */ +IBM_HANDLE(bayej, root, + "\\_SB.PCI0.IDE0.SCND.MSTR._EJ0"); /* all except A2x, A3x */ + +IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A22p, T20, T21, X20 */ +IBM_HANDLE(hkey, ec, "HKEY"); /* all */ +IBM_HANDLE(led, ec, "LED"); /* all except A21e, A22p, T20, T21, X20 */ +IBM_HANDLE(sysl, ec, "SYSL"); /* A21e, A22p, T20, T21, X20 */ +IBM_HANDLE(bled, ec, "BLED"); /* A22p, T20, T21, X20 */ +IBM_HANDLE(beep, ec, "BEEP"); /* all models */ + +struct ibm_struct { + char *name; + + char *hid; + struct acpi_driver *driver; + + int (*init) (struct ibm_struct *); + int (*read) (struct ibm_struct *, char *); + int (*write) (struct ibm_struct *, char *); + void (*exit) (struct ibm_struct *); + + void (*notify) (struct ibm_struct *, u32); + acpi_handle *handle; + int type; + struct acpi_device *device; + + int driver_registered; + int proc_created; + int init_called; + int notify_installed; + + int supported; + union { + struct { + int status; + int mask; + } hotkey; + struct { + int autoswitch; + } video; + } state; + + int experimental; +}; + +static struct proc_dir_entry *proc_dir = NULL; + +#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off") +#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") +#define strlencmp(a,b) (strncmp((a), (b), strlen(b))) + +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; + 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); + + result.length = sizeof(out_obj); + result.pointer = &out_obj; + + status = acpi_evaluate_object(handle, method, ¶ms, &result); + + 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 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; +} + +static int _driver_init(struct ibm_struct *ibm) +{ + printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION); + printk(IBM_INFO "%s\n", IBM_URL); + + return 0; +} + +static int driver_read(struct ibm_struct *ibm, 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 int hotkey_get(struct ibm_struct *ibm, int *status, int *mask) +{ + if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) + return -EIO; + if (ibm->supported) { + if (!acpi_evalf(hkey_handle, mask, "DHKN", "qd")) + return -EIO; + } else { + *mask = ibm->state.hotkey.mask; + } + return 0; +} + +static int hotkey_set(struct ibm_struct *ibm, int status, int mask) +{ + int i; + + if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) + return -EIO; + + if (!ibm->supported) + return 0; + + 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_init(struct ibm_struct *ibm) +{ + int ret; + + ibm->supported = 1; + ret = hotkey_get(ibm, + &ibm->state.hotkey.status, + &ibm->state.hotkey.mask); + if (ret < 0) { + /* mask not supported on A21e, A22p, T20, T21, X20, X22, X24 */ + ibm->supported = 0; + ret = hotkey_get(ibm, + &ibm->state.hotkey.status, + &ibm->state.hotkey.mask); + } + + return ret; +} + +static int hotkey_read(struct ibm_struct *ibm, char *p) +{ + int status, mask; + int len = 0; + + if (hotkey_get(ibm, &status, &mask) < 0) + return -EIO; + + len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); + if (ibm->supported) { + 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(struct ibm_struct *ibm, char *buf) +{ + int status, mask; + char *cmd; + int do_cmd = 0; + + if (hotkey_get(ibm, &status, &mask) < 0) + return -ENODEV; + + 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 = ibm->state.hotkey.status; + mask = ibm->state.hotkey.mask; + } else if (sscanf(cmd, "0x%x", &mask) == 1) { + /* mask set */ + } else if (sscanf(cmd, "%x", &mask) == 1) { + /* mask set */ + } else + return -EINVAL; + do_cmd = 1; + } + + if (do_cmd && hotkey_set(ibm, status, mask) < 0) + return -EIO; + + return 0; +} + +static void hotkey_exit(struct ibm_struct *ibm) +{ + hotkey_set(ibm, ibm->state.hotkey.status, ibm->state.hotkey.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 bluetooth_init(struct ibm_struct *ibm) +{ + /* bluetooth not supported on A21e, G40, T20, T21, X20 */ + ibm->supported = acpi_evalf(hkey_handle, NULL, "GBDC", "qv"); + + return 0; +} + +static int bluetooth_status(struct ibm_struct *ibm) +{ + int status; + + if (!ibm->supported || !acpi_evalf(hkey_handle, &status, "GBDC", "d")) + status = 0; + + return status; +} + +static int bluetooth_read(struct ibm_struct *ibm, char *p) +{ + int len = 0; + int status = bluetooth_status(ibm); + + if (!ibm->supported) + len += sprintf(p + len, "status:\t\tnot supported\n"); + else if (!(status & 1)) + len += sprintf(p + len, "status:\t\tnot installed\n"); + else { + len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1)); + len += sprintf(p + len, "commands:\tenable, disable\n"); + } + + return len; +} + +static int bluetooth_write(struct ibm_struct *ibm, char *buf) +{ + int status = bluetooth_status(ibm); + char *cmd; + int do_cmd = 0; + + if (!ibm->supported) + return -EINVAL; + + while ((cmd = next_cmd(&buf))) { + if (strlencmp(cmd, "enable") == 0) { + status |= 2; + } else if (strlencmp(cmd, "disable") == 0) { + status &= ~2; + } else + return -EINVAL; + do_cmd = 1; + } + + if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) + return -EIO; + + return 0; +} + +static int video_init(struct ibm_struct *ibm) +{ + if (!acpi_evalf(vid_handle, + &ibm->state.video.autoswitch, "^VDEE", "d")) + return -ENODEV; + + return 0; +} + +static int video_status(struct ibm_struct *ibm) +{ + int status = 0; + int i; + + acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1); + if (acpi_evalf(NULL, &i, "\\VCDC", "d")) + status |= 0x02 * i; + + acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0); + if (acpi_evalf(NULL, &i, "\\VCDL", "d")) + status |= 0x01 * i; + if (acpi_evalf(NULL, &i, "\\VCDD", "d")) + status |= 0x08 * i; + + if (acpi_evalf(vid_handle, &i, "^VDEE", "d")) + status |= 0x10 * (i & 1); + + return status; +} + +static int video_read(struct ibm_struct *ibm, char *p) +{ + int status = video_status(ibm); + int len = 0; + + len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); + len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); + len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); + len += sprintf(p + len, "auto:\t\t%s\n", enabled(status, 4)); + len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable, " + "crt_enable, crt_disable\n"); + len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable, " + "auto_enable, auto_disable\n"); + len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); + + return len; +} + +static int video_write(struct ibm_struct *ibm, char *buf) +{ + char *cmd; + int enable, disable, status; + + enable = disable = 0; + + while ((cmd = next_cmd(&buf))) { + if (strlencmp(cmd, "lcd_enable") == 0) { + enable |= 0x01; + } else if (strlencmp(cmd, "lcd_disable") == 0) { + disable |= 0x01; + } else if (strlencmp(cmd, "crt_enable") == 0) { + enable |= 0x02; + } else if (strlencmp(cmd, "crt_disable") == 0) { + disable |= 0x02; + } else if (strlencmp(cmd, "dvi_enable") == 0) { + enable |= 0x08; + } else if (strlencmp(cmd, "dvi_disable") == 0) { + disable |= 0x08; + } else if (strlencmp(cmd, "auto_enable") == 0) { + if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) + return -EIO; + } else if (strlencmp(cmd, "auto_disable") == 0) { + if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0)) + return -EIO; + } else if (strlencmp(cmd, "video_switch") == 0) { + int autoswitch; + if (!acpi_evalf(vid_handle, &autoswitch, "^VDEE", "d")) + return -EIO; + if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) + return -EIO; + if (!acpi_evalf(vid_handle, NULL, "VSWT", "v")) + return -EIO; + if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", + autoswitch)) + return -EIO; + } else if (strlencmp(cmd, "expand_toggle") == 0) { + if (!acpi_evalf(NULL, NULL, "\\VEXP", "v")) + return -EIO; + } else + return -EINVAL; + } + + if (enable || disable) { + status = (video_status(ibm) & 0x0f & ~disable) | enable; + if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80)) + return -EIO; + if (!acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1)) + return -EIO; + } + + return 0; +} + +static void video_exit(struct ibm_struct *ibm) +{ + acpi_evalf(vid_handle, NULL, "_DOS", "vd", + ibm->state.video.autoswitch); +} + +static int light_init(struct ibm_struct *ibm) +{ + /* kblt not supported on G40, R32, X20 */ + ibm->supported = acpi_evalf(ec_handle, NULL, "KBLT", "qv"); + + return 0; +} + +static int light_read(struct ibm_struct *ibm, char *p) +{ + int len = 0; + int status = 0; + + if (ibm->supported) { + if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) + return -EIO; + len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); + } else + len += sprintf(p + len, "status:\t\tunknown\n"); + + len += sprintf(p + len, "commands:\ton, off\n"); + + return len; +} + +static int light_write(struct ibm_struct *ibm, char *buf) +{ + int cmos_cmd, lght_cmd; + char *cmd; + int success; + + while ((cmd = next_cmd(&buf))) { + if (strlencmp(cmd, "on") == 0) { + cmos_cmd = 0x0c; + lght_cmd = 1; + } else if (strlencmp(cmd, "off") == 0) { + cmos_cmd = 0x0d; + lght_cmd = 0; + } else + return -EINVAL; + + success = cmos_handle ? + acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) : + acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd); + if (!success) + return -EIO; + } + + return 0; +} + +static int _sta(acpi_handle handle) +{ + int status; + + if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) + status = 0; + + return status; +} + +#define dock_docked() (_sta(dock_handle) & 1) + +static int dock_read(struct ibm_struct *ibm, char *p) +{ + int len = 0; + int docked = dock_docked(); + + if (!dock_handle) + len += sprintf(p + len, "status:\t\tnot supported\n"); + else if (!docked) + len += sprintf(p + len, "status:\t\tundocked\n"); + else { + len += sprintf(p + len, "status:\t\tdocked\n"); + len += sprintf(p + len, "commands:\tdock, undock\n"); + } + + return len; +} + +static int dock_write(struct ibm_struct *ibm, char *buf) +{ + char *cmd; + + if (!dock_docked()) + return -EINVAL; + + while ((cmd = next_cmd(&buf))) { + if (strlencmp(cmd, "undock") == 0) { + if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0)) + return -EIO; + if (!acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) + return -EIO; + } else if (strlencmp(cmd, "dock") == 0) { + if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) + return -EIO; + } else + return -EINVAL; + } + + return 0; +} + +static void dock_notify(struct ibm_struct *ibm, u32 event) +{ + int docked = dock_docked(); + + if (event == 3 && docked) + acpi_bus_generate_event(ibm->device, event, 1); /* button */ + else if (event == 3 && !docked) + acpi_bus_generate_event(ibm->device, event, 2); /* undock */ + else if (event == 0 && docked) + acpi_bus_generate_event(ibm->device, event, 3); /* dock */ + else { + printk(IBM_ERR "unknown dock event %d, status %d\n", + event, _sta(dock_handle)); + acpi_bus_generate_event(ibm->device, event, 0); /* unknown */ + } +} + +#define bay_occupied() (_sta(bay_handle) & 1) + +static int bay_init(struct ibm_struct *ibm) +{ + /* bay not supported on A21e, A22p, A31, A31p, G40, R32, R40e */ + ibm->supported = bay_handle && bayej_handle && + acpi_evalf(bay_handle, NULL, "_STA", "qv"); + + return 0; +} + +static int bay_read(struct ibm_struct *ibm, char *p) +{ + int len = 0; + int occupied = bay_occupied(); + + if (!ibm->supported) + len += sprintf(p + len, "status:\t\tnot supported\n"); + else if (!occupied) + len += sprintf(p + len, "status:\t\tunoccupied\n"); + else { + len += sprintf(p + len, "status:\t\toccupied\n"); + len += sprintf(p + len, "commands:\teject\n"); + } + + return len; +} + +static int bay_write(struct ibm_struct *ibm, char *buf) +{ + char *cmd; + + while ((cmd = next_cmd(&buf))) { + if (strlencmp(cmd, "eject") == 0) { + if (!ibm->supported || + !acpi_evalf(bay_handle, NULL, "_EJ0", "vd", 1)) + return -EIO; + } else + return -EINVAL; + } + + return 0; +} + +static void bay_notify(struct ibm_struct *ibm, u32 event) +{ + acpi_bus_generate_event(ibm->device, event, 0); +} + +static int cmos_read(struct ibm_struct *ibm, char *p) +{ + int len = 0; + + /* cmos not supported on A21e, A22p, T20, T21, X20 */ + if (!cmos_handle) + len += sprintf(p + len, "status:\t\tnot supported\n"); + else { + len += sprintf(p + len, "status:\t\tsupported\n"); + len += sprintf(p + len, "commands:\t\n"); + } + + return len; +} + +static int cmos_write(struct ibm_struct *ibm, char *buf) +{ + char *cmd; + int cmos_cmd; + + if (!cmos_handle) + return -EINVAL; + + while ((cmd = next_cmd(&buf))) { + if (sscanf(cmd, "%u", &cmos_cmd) == 1) { + /* cmos_cmd set */ + } else + return -EINVAL; + + if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) + return -EIO; + } + + return 0; +} + +static int led_read(struct ibm_struct *ibm, char *p) +{ + int len = 0; + + len += sprintf(p + len, "commands:\t" + " on, off, blink\n"); + + return len; +} + +static int led_write(struct ibm_struct *ibm, char *buf) +{ + char *cmd; + unsigned int led; + int led_cmd, sysl_cmd, bled_a, bled_b; + + while ((cmd = next_cmd(&buf))) { + if (sscanf(cmd, "%u", &led) != 1) + return -EINVAL; + + if (strstr(cmd, "blink")) { + led_cmd = 0xc0; + sysl_cmd = 2; + bled_a = 2; + bled_b = 1; + } else if (strstr(cmd, "on")) { + led_cmd = 0x80; + sysl_cmd = 1; + bled_a = 2; + bled_b = 0; + } else if (strstr(cmd, "off")) { + led_cmd = sysl_cmd = bled_a = bled_b = 0; + } else + return -EINVAL; + + if (led_handle) { + if (!acpi_evalf(led_handle, NULL, NULL, "vdd", + led, led_cmd)) + return -EIO; + } else if (led < 2) { + if (acpi_evalf(sysl_handle, NULL, NULL, "vdd", + led, sysl_cmd)) + return -EIO; + } else if (led == 2 && bled_handle) { + if (acpi_evalf(bled_handle, NULL, NULL, "vdd", + bled_a, bled_b)) + return -EIO; + } else + return -EINVAL; + } + + return 0; +} + +static int beep_read(struct ibm_struct *ibm, char *p) +{ + int len = 0; + + len += sprintf(p + len, "commands:\t\n"); + + return len; +} + +static int beep_write(struct ibm_struct *ibm, char *buf) +{ + char *cmd; + int beep_cmd; + + while ((cmd = next_cmd(&buf))) { + if (sscanf(cmd, "%u", &beep_cmd) == 1) { + /* beep_cmd set */ + } else + return -EINVAL; + + if (!acpi_evalf(beep_handle, NULL, NULL, "vd", beep_cmd)) + return -EIO; + } + + return 0; +} + +static struct ibm_struct ibms[] = { + { + .name = "driver", + .init = _driver_init, + .read = driver_read, + }, + { + .name = "hotkey", + .hid = "IBM0068", + .init = hotkey_init, + .read = hotkey_read, + .write = hotkey_write, + .exit = hotkey_exit, + .notify = hotkey_notify, + .handle = &hkey_handle, + .type = ACPI_DEVICE_NOTIFY, + }, + { + .name = "bluetooth", + .init = bluetooth_init, + .read = bluetooth_read, + .write = bluetooth_write, + }, + { + .name = "video", + .init = video_init, + .read = video_read, + .write = video_write, + .exit = video_exit, + }, + { + .name = "light", + .init = light_init, + .read = light_read, + .write = light_write, + }, + { + .name = "dock", + .read = dock_read, + .write = dock_write, + .notify = dock_notify, + .handle = &dock_handle, + .type = ACPI_SYSTEM_NOTIFY, + }, + { + .name = "bay", + .init = bay_init, + .read = bay_read, + .write = bay_write, + .notify = bay_notify, + .handle = &bay_handle, + .type = ACPI_SYSTEM_NOTIFY, + }, + { + .name = "cmos", + .read = cmos_read, + .write = cmos_write, + .experimental = 1, + }, + { + .name = "led", + .read = led_read, + .write = led_write, + .experimental = 1, + }, + { + .name = "beep", + .read = beep_read, + .write = beep_write, + .experimental = 1, + }, +}; +#define NUM_IBMS (sizeof(ibms)/sizeof(ibms[0])) + +static int dispatch_read(char *page, char **start, off_t off, int count, + int *eof, void *data) +{ + struct ibm_struct *ibm = (struct ibm_struct *)data; + int len; + + if (!ibm || !ibm->read) + return -EINVAL; + + len = ibm->read(ibm, page); + if (len < 0) + return len; + + if (len <= off + count) + *eof = 1; + *start = page + off; + len -= off; + if (len > count) + len = count; + if (len < 0) + len = 0; + + return len; +} + +static int dispatch_write(struct file *file, const char __user *userbuf, + unsigned long count, void *data) +{ + struct ibm_struct *ibm = (struct ibm_struct *)data; + char *kernbuf; + int ret; + + if (!ibm || !ibm->write) + return -EINVAL; + + kernbuf = kmalloc(count + 2, GFP_KERNEL); + if (!kernbuf) + return -ENOMEM; + + if (copy_from_user(kernbuf, userbuf, count)) { + kfree(kernbuf); + return -EFAULT; + } + + kernbuf[count] = 0; + strcat(kernbuf, ","); + ret = ibm->write(ibm, kernbuf); + if (ret == 0) + ret = count; + + kfree(kernbuf); + + return ret; +} + +static void dispatch_notify(acpi_handle handle, u32 event, void *data) +{ + struct ibm_struct *ibm = (struct ibm_struct *)data; + + if (!ibm || !ibm->notify) + return; + + ibm->notify(ibm, event); +} + +static int setup_notify(struct ibm_struct *ibm) +{ + acpi_status status; + int ret; + + if (!*ibm->handle) + return 0; + + ret = acpi_bus_get_device(*ibm->handle, &ibm->device); + if (ret < 0) { + printk(IBM_ERR "%s device not present\n", ibm->name); + return 0; + } + + acpi_driver_data(ibm->device) = ibm; + sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name); + + status = acpi_install_notify_handler(*ibm->handle, ibm->type, + dispatch_notify, ibm); + if (ACPI_FAILURE(status)) { + printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n", + ibm->name, status); + return -ENODEV; + } + + ibm->notify_installed = 1; + + return 0; +} + +static int _device_add(struct acpi_device *device) +{ + return 0; +} + +static int register_driver(struct ibm_struct *ibm) +{ + int ret; + + ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL); + if (!ibm->driver) { + printk(IBM_ERR "kmalloc(ibm->driver) failed\n"); + return -1; + } + + memset(ibm->driver, 0, sizeof(struct acpi_driver)); + sprintf(ibm->driver->name, "%s/%s", IBM_NAME, ibm->name); + ibm->driver->ids = ibm->hid; + ibm->driver->ops.add = &_device_add; + + ret = acpi_bus_register_driver(ibm->driver); + if (ret < 0) { + printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n", + ibm->hid, ret); + kfree(ibm->driver); + } + + return ret; +} + +static int ibm_init(struct ibm_struct *ibm) +{ + int ret; + struct proc_dir_entry *entry; + + if (ibm->experimental && !experimental) + return 0; + + if (ibm->hid) { + ret = register_driver(ibm); + if (ret < 0) + return ret; + ibm->driver_registered = 1; + } + + if (ibm->init) { + ret = ibm->init(ibm); + if (ret != 0) + return ret; + ibm->init_called = 1; + } + + entry = create_proc_entry(ibm->name, S_IFREG | S_IRUGO | S_IWUSR, + proc_dir); + if (!entry) { + printk(IBM_ERR "unable to create proc entry %s\n", ibm->name); + return -ENODEV; + } + entry->owner = THIS_MODULE; + ibm->proc_created = 1; + + entry->data = ibm; + if (ibm->read) + entry->read_proc = &dispatch_read; + if (ibm->write) + entry->write_proc = &dispatch_write; + + if (ibm->notify) { + ret = setup_notify(ibm); + if (ret < 0) + return ret; + } + + return 0; +} + +static void ibm_exit(struct ibm_struct *ibm) +{ + if (ibm->notify_installed) + acpi_remove_notify_handler(*ibm->handle, ibm->type, + dispatch_notify); + + if (ibm->proc_created) + remove_proc_entry(ibm->name, proc_dir); + + if (ibm->init_called && ibm->exit) + ibm->exit(ibm); + + if (ibm->driver_registered) { + acpi_bus_unregister_driver(ibm->driver); + kfree(ibm->driver); + } +} + +static int ibm_handle_init(char *name, + acpi_handle *handle, acpi_handle parent, + char **paths, int num_paths, int required) +{ + int i; + acpi_status status; + + for (i=0; i 30) + return -ENOSPC; + + strcpy(arg_with_comma, val); + strcat(arg_with_comma, ","); + + for (i=0; iname) == 0) + return ibms[i].write(&ibms[i], arg_with_comma); + BUG(); + return -EINVAL; +} + +#define IBM_PARAM(feature) \ + module_param_call(feature, set_ibm_param, NULL, NULL, 0) + +static void acpi_ibm_exit(void) +{ + int i; + + for (i=NUM_IBMS-1; i>=0; i--) + ibm_exit(&ibms[i]); + + remove_proc_entry(IBM_DIR, acpi_root_dir); +} + +static int __init acpi_ibm_init(void) +{ + int ret, i; + + if (acpi_disabled) + return -ENODEV; + + /* these handles are required */ + if (IBM_HANDLE_INIT(ec, 1) < 0 || + IBM_HANDLE_INIT(hkey, 1) < 0 || + IBM_HANDLE_INIT(vid, 1) < 0 || + IBM_HANDLE_INIT(beep, 1) < 0) + return -ENODEV; + + /* these handles have alternatives */ + IBM_HANDLE_INIT(lght, 0); + if (IBM_HANDLE_INIT(cmos, !lght_handle) < 0) + return -ENODEV; + IBM_HANDLE_INIT(sysl, 0); + if (IBM_HANDLE_INIT(led, !sysl_handle) < 0) + return -ENODEV; + + /* these handles are not required */ + IBM_HANDLE_INIT(dock, 0); + IBM_HANDLE_INIT(bay, 0); + IBM_HANDLE_INIT(bayej, 0); + IBM_HANDLE_INIT(bled, 0); + + proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir); + if (!proc_dir) { + printk(IBM_ERR "unable to create proc dir %s", IBM_DIR); + return -ENODEV; + } + proc_dir->owner = THIS_MODULE; + + for (i=0; i + and . + + If you have an IBM ThinkPad laptop, say Y or M here. + config ACPI_TOSHIBA tristate "Toshiba Laptop Extras" depends on X86 Index: linux/Documentation/ibm-acpi.txt =================================================================== --- /dev/null +++ linux/Documentation/ibm-acpi.txt @@ -0,0 +1,474 @@ + IBM ThinkPad ACPI Extras Driver + + Version 0.8 + 8 November 2004 + + Borislav Deianov + http://ibm-acpi.sf.net/ + + +This is a Linux ACPI driver for the IBM ThinkPad laptops. It aims to +support various features of these laptops which are accessible through +the ACPI framework but not otherwise supported by the generic Linux +ACPI drivers. + + +Status +------ + +The features currently supported are the following (see below for +detailed description): + + - Fn key combinations + - Bluetooth enable and disable + - video output switching, expansion control + - ThinkLight on and off + - limited docking and undocking + - UltraBay eject + - Experimental: CMOS control + - Experimental: LED control + - Experimental: ACPI sounds + +A compatibility table by model and feature is maintained on the web +site, http://ibm-acpi.sf.net/. I appreciate any success or failure +reports, especially if they add to or correct the compatibility table. +Please include the following information in your report: + + - ThinkPad model name + - a copy of your DSDT, from /proc/acpi/dsdt + - which driver features work and which don't + - the observed behavior of non-working features + +Any other comments or patches are also more than welcome. + + +Installation +------------ + +If you are compiling this driver as included in the Linux kernel +sources, simply enable the CONFIG_ACPI_IBM option (Power Management / +ACPI / IBM ThinkPad Laptop Extras). The rest of this section describes +how to install this driver when downloaded from the web site. + +First, you need to get a kernel with ACPI support up and running. +Please refer to http://acpi.sourceforge.net/ for help with this +step. How successful you will be depends a lot on you ThinkPad model, +the kernel you are using and any additional patches applied. The +kernel provided with your distribution may not be good enough. I +needed to compile a 2.6.7 kernel with the 20040715 ACPI patch to get +ACPI working reliably on my ThinkPad X40. Old ThinkPad models may not +be supported at all. + +Assuming you have the basic ACPI support working (e.g. you can see the +/proc/acpi directory), follow the following steps to install this +driver: + + - unpack the archive: + + tar xzvf ibm-acpi-x.y.tar.gz; cd ibm-acpi-x.y + + - compile the driver: + + make + + - install the module in your kernel modules directory: + + make install + + - load the module: + + modprobe ibm_acpi + +After loading the module, check the "dmesg" output for any error messages. + + +Features +-------- + +The driver creates the /proc/acpi/ibm directory. There is a file under +that directory for each feature described below. Note that while the +driver is still in the alpha stage, the exact proc file format and +commands supported by the various features is guaranteed to change +frequently. + +Driver Version -- /proc/acpi/ibm/driver +-------------------------------------- + +The driver name and version. No commands can be written to this file. + +Hot Keys -- /proc/acpi/ibm/hotkey +--------------------------------- + +Without this driver, only the Fn-F4 key (sleep button) generates an +ACPI event. With the driver loaded, the hotkey feature enabled and the +mask set (see below), the various hot keys generate ACPI events in the +following format: + + ibm/hotkey HKEY 00000080 0000xxxx + +The last four digits vary depending on the key combination pressed. +All labeled Fn-Fx key combinations generate distinct events. In +addition, the lid microswitch and some docking station buttons may +also generate such events. + +The following commands can be written to this file: + + echo enable > /proc/acpi/ibm/hotkey -- enable the hot keys feature + echo disable > /proc/acpi/ibm/hotkey -- disable the hot keys feature + echo 0xffff > /proc/acpi/ibm/hotkey -- enable all possible hot keys + echo 0x0000 > /proc/acpi/ibm/hotkey -- disable all possible hot keys + ... any other 4-hex-digit mask ... + echo reset > /proc/acpi/ibm/hotkey -- restore the original mask + +The bit mask allows some control over which hot keys generate ACPI +events. Not all bits in the mask can be modified. Not all bits that +can be modified do anything. Not all hot keys can be individually +controlled by the mask. Most recent ThinkPad models honor the +following bits (assuming the hot keys feature has been enabled): + + key bit behavior when set behavior when unset + + Fn-F3 always generates ACPI event + Fn-F4 always generates ACPI event + Fn-F5 0010 generate ACPI event enable/disable Bluetooth + Fn-F7 0040 generate ACPI event switch LCD and external display + Fn-F8 0080 generate ACPI event expand screen or none + Fn-F9 0100 generate ACPI event none + Fn-F12 always generates ACPI event + +Some models do not support all of the above. For example, the T30 does +not support Fn-F5 and Fn-F9. Other models do not support the mask at +all. On those models, hot keys cannot be controlled individually. + +Note that enabling ACPI events for some keys prevents their default +behavior. For example, if events for Fn-F5 are enabled, that key will +no longer enable/disable Bluetooth by itself. This can still be done +from an acpid handler for the ibm/hotkey event. + +Note also that not all Fn key combinations are supported through +ACPI. For example, on the X40, the brightness, volume and "Access IBM" +buttons do not generate ACPI events even with this driver. They *can* +be used through the "ThinkPad Buttons" utility, see +http://www.nongnu.org/tpb/ + +Bluetooth -- /proc/acpi/ibm/bluetooth +------------------------------------- + +This feature shows the presence and current state of a Bluetooth +device. If Bluetooth is installed, the following commands can be used: + + echo enable > /proc/acpi/ibm/bluetooth + echo disable > /proc/acpi/ibm/bluetooth + +Video output control -- /proc/acpi/ibm/video +-------------------------------------------- + +This feature allows control over the devices used for video output - +LCD, CRT or DVI (if available). The following commands are available: + + echo lcd_enable > /proc/acpi/ibm/video + echo lcd_disable > /proc/acpi/ibm/video + echo crt_enable > /proc/acpi/ibm/video + echo crt_disable > /proc/acpi/ibm/video + echo dvi_enable > /proc/acpi/ibm/video + echo dvi_disable > /proc/acpi/ibm/video + echo auto_enable > /proc/acpi/ibm/video + echo auto_disable > /proc/acpi/ibm/video + echo expand_toggle > /proc/acpi/ibm/video + echo video_switch > /proc/acpi/ibm/video + +Each video output device can be enabled or disabled individually. +Reading /proc/acpi/ibm/video shows the status of each device. + +Automatic video switching can be enabled or disabled. When automatic +video switching is enabled, certain events (e.g. opening the lid, +docking or undocking) cause the video output device to change +automatically. While this can be useful, it also causes flickering +and, on the X40, video corruption. By disabling automatic switching, +the flickering or video corruption can be avoided. + +The video_switch command cycles through the available video outputs +(it sumulates the behavior of Fn-F7). + +Video expansion can be toggled through this feature. This controls +whether the display is expanded to fill the entire LCD screen when a +mode with less than full resolution is used. Note that the current +video expansion status cannot be determined through this feature. + +Note that on many models (particularly those using Radeon graphics +chips) the X driver configures the video card in a way which prevents +Fn-F7 from working. This also disables the video output switching +features of this driver, as it uses the same ACPI methods as +Fn-F7. Video switching on the console should still work. + +ThinkLight control -- /proc/acpi/ibm/light +------------------------------------------ + +The current status of the ThinkLight can be found in this file. A few +models which do not make the status available will show it as +"unknown". The available commands are: + + echo on > /proc/acpi/ibm/light + echo off > /proc/acpi/ibm/light + +Docking / Undocking -- /proc/acpi/ibm/dock +------------------------------------------ + +Docking and undocking (e.g. with the X4 UltraBase) requires some +actions to be taken by the operating system to safely make or break +the electrical connections with the dock. + +The docking feature of this driver generates the following ACPI events: + + ibm/dock GDCK 00000003 00000001 -- eject request + ibm/dock GDCK 00000003 00000002 -- undocked + ibm/dock GDCK 00000000 00000003 -- docked + +NOTE: These events will only be generated if the laptop was docked +when originally booted. This is due to the current lack of support for +hot plugging of devices in the Linux ACPI framework. If the laptop was +booted while not in the dock, the following message is shown in the +logs: "ibm_acpi: dock device not present". No dock-related events are +generated but the dock and undock commands described below still +work. They can be executed manually or triggered by Fn key +combinations (see the example acpid configuration files included in +the driver tarball package available on the web site). + +When the eject request button on the dock is pressed, the first event +above is generated. The handler for this event should issue the +following command: + + echo undock > /proc/acpi/ibm/dock + +After the LED on the dock goes off, it is safe to eject the laptop. +Note: if you pressed this key by mistake, go ahead and eject the +laptop, then dock it back in. Otherwise, the dock may not function as +expected. + +When the laptop is docked, the third event above is generated. The +handler for this event should issue the following command to fully +enable the dock: + + echo dock > /proc/acpi/ibm/dock + +The contents of the /proc/acpi/ibm/dock file shows the current status +of the dock, as provided by the ACPI framework. + +The docking support in this driver does not take care of enabling or +disabling any other devices you may have attached to the dock. For +example, a CD drive plugged into the UltraBase needs to be disabled or +enabled separately. See the provided example acpid configuration files +for how this can be accomplished. + +There is no support yet for PCI devices that may be attached to a +docking station, e.g. in the ThinkPad Dock II. The driver currently +does not recognize, enable or disable such devices. This means that +the only docking stations currently supported are the X-series +UltraBase docks and "dumb" port replicators like the Mini Dock (the +latter don't need any ACPI support, actually). + +UltraBay Eject -- /proc/acpi/ibm/bay +------------------------------------ + +Inserting or ejecting an UltraBay device requires some actions to be +taken by the operating system to safely make or break the electrical +connections with the device. + +This feature generates the following ACPI events: + + ibm/bay MSTR 00000003 00000000 -- eject request + ibm/bay MSTR 00000001 00000000 -- eject lever inserted + +NOTE: These events will only be generated if the UltraBay was present +when the laptop was originally booted (on the X series, the UltraBay +is in the dock, so it may not be present if the laptop was undocked). +This is due to the current lack of support for hot plugging of devices +in the Linux ACPI framework. If the laptop was booted without the +UltraBay, the following message is shown in the logs: "ibm_acpi: bay +device not present". No bay-related events are generated but the eject +command described below still works. It can be executed manually or +triggered by a hot key combination. + +Sliding the eject lever generates the first event shown above. The +handler for this event should take whatever actions are necessary to +shut down the device in the UltraBay (e.g. call idectl), then issue +the following command: + + echo eject > /proc/acpi/ibm/bay + +After the LED on the UltraBay goes off, it is safe to pull out the +device. + +When the eject lever is inserted, the second event above is +generated. The handler for this event should take whatever actions are +necessary to enable the UltraBay device (e.g. call idectl). + +The contents of the /proc/acpi/ibm/bay file shows the current status +of the UltraBay, as provided by the ACPI framework. + +Experimental Features +--------------------- + +The following features are marked experimental because using them +involves guessing the correct values of some parameters. Guessing +incorrectly may have undesirable effects like crashing your +ThinkPad. USE THESE WITH CAUTION! To activate them, you'll need to +supply the experimental=1 parameter when loading the module. + +Experimental: CMOS control - /proc/acpi/ibm/cmos +------------------------------------------------ + +This feature is used internally by the ACPI firmware to control the +ThinkLight on most newer ThinkPad models. It appears that it can also +control LCD brightness, sounds volume and more, but only on some +models. + +The commands are non-negative integer numbers: + + echo 0 >/proc/acpi/ibm/cmos + echo 1 >/proc/acpi/ibm/cmos + echo 2 >/proc/acpi/ibm/cmos + ... + +The range of numbers which are used internally by various models is 0 +to 21, but it's possible that numbers outside this range have +interesting behavior. Here is the behavior on the X40 (tpb is the +ThinkPad Buttons utility): + + 0 - no effect but tpb reports "Volume down" + 1 - no effect but tpb reports "Volume up" + 2 - no effect but tpb reports "Mute on" + 3 - simulate pressing the "Access IBM" button + 4 - LCD brightness up + 5 - LCD brightness down + 11 - toggle screen expansion + 12 - ThinkLight on + 13 - ThinkLight off + 14 - no effect but tpb reports ThinkLight status change + +If you try this feature, please send me a report similar to the +above. On models which allow control of LCD brightness or sound +volume, I'd like to provide this functionality in an user-friendly +way, but first I need a way to identify the models which this is +possible. + +Experimental: LED control - /proc/acpi/ibm/LED +---------------------------------------------- + +Some of the LED indicators can be controlled through this feature. The +available commands are: + + echo on >/proc/acpi/ibm/led + echo off >/proc/acpi/ibm/led + echo blink >/proc/acpi/ibm/led + +The parameter is a non-negative integer. The range of LED +numbers used internally by various models is 0 to 7 but it's possible +that numbers outside this range are also valid. Here is the mapping on +the X40: + + 0 - power + 1 - battery (orange) + 2 - battery (green) + 3 - UltraBase + 4 - UltraBay + 7 - standby + +All of the above can be turned on and off and can be made to blink. + +If you try this feature, please send me a report similar to the +above. I'd like to provide this functionality in an user-friendly way, +but first I need to identify the which numbers correspond to which +LEDs on various models. + +Experimental: ACPI sounds - /proc/acpi/ibm/beep +----------------------------------------------- + +The BEEP method is used internally by the ACPI firmware to provide +audible alerts in various situtation. This feature allows the same +sounds to be triggered manually. + +The commands are non-negative integer numbers: + + echo 0 >/proc/acpi/ibm/beep + echo 1 >/proc/acpi/ibm/beep + echo 2 >/proc/acpi/ibm/beep + ... + +The range of numbers which are used internally by various models is 0 +to 17, but it's possible that numbers outside this range are also +valid. Here is the behavior on the X40: + + 2 - two beeps, pause, third beep + 3 - single beep + 4 - "unable" + 5 - single beep + 6 - "AC/DC" + 7 - high-pitched beep + 9 - three short beeps + 10 - very long beep + 12 - low-pitched beep + +(I've only been able to identify a couple of them). + +If you try this feature, please send me a report similar to the +above. I'd like to provide this functionality in an user-friendly way, +but first I need to identify the which numbers correspond to which +sounds on various models. + + +Multiple Command, Module Parameters +----------------------------------- + +Multiple commands can be written to the proc files in one shot by +separating them with commas, for example: + + echo enable,0xffff > /proc/acpi/ibm/hotkey + echo lcd_disable,crt_enable > /proc/acpi/ibm/video + +Commands can also be specified when loading the ibm_acpi module, for +example: + + modprobe ibm_acpi hotkey=enable,0xffff video=auto_disable + + +Example Configuration +--------------------- + +The ACPI support in the kernel is intended to be used in conjunction +with a user-space daemon, acpid. The configuration files for this +daemon control what actions are taken in response to various ACPI +events. An example set of configuration files are included in the +config/ directory of the tarball package available on the web +site. Note that these are provided for illustration purposes only and +may need to be adapted to your particular setup. + +The following utility scripts are used by the example action +scripts (included with ibm-acpi for completeness): + + /usr/local/sbin/idectl -- from the hdparm source distribution, + see http://www.ibiblio.org/pub/Linux/system/hardware + /usr/local/sbin/laptop_mode -- from the Linux kernel source + distribution, see Documentation/laptop-mode.txt + /sbin/service -- comes with Redhat/Fedora distributions + +Toan T Nguyen has written a SuSE powersave +script for the X20, included in config/usr/sbin/ibm_hotkeys_X20 + +Henrik Brix Andersen has written a Gentoo ACPI event +handler script for the X31. You can get the latest version from +http://dev.gentoo.org/~brix/files/x31.sh + +David Schweikert has written an alternative blank.sh +script which works on Debian systems, included in +configs/etc/acpi/actions/blank-debian.sh + + +TODO +---- + +I'd like to implement the following features but haven't yet found the +time and/or I don't yet know how to implement them: + +- UltraBay floppy drive support + Index: linux/drivers/acpi/Makefile =================================================================== --- linux.orig/drivers/acpi/Makefile +++ linux/drivers/acpi/Makefile @@ -57,6 +57,7 @@ obj-$(CONFIG_ACPI_DEBUG) += debug.o obj-$(CONFIG_ACPI_NUMA) += numa.o obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o +obj-$(CONFIG_ACPI_IBM) += ibm_acpi.o obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o obj-y += cm_sbs.o obj-$(CONFIG_ACPI_SBS) += sbs.o