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-rw-r--r--drivers/acpi/ibm_acpi.c1049
1 files changed, 891 insertions, 158 deletions
diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c
index 5a8445959f6..b72d13d11a2 100644
--- a/drivers/acpi/ibm_acpi.c
+++ b/drivers/acpi/ibm_acpi.c
@@ -3,6 +3,7 @@
*
*
* Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
+ * Copyright (C) 2006 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
*
* 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
@@ -19,10 +20,14 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#define IBM_VERSION "0.12a"
+#define IBM_VERSION "0.13"
/*
* Changelog:
+ *
+ * 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
@@ -77,9 +82,16 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/string.h>
+
#include <linux/proc_fs.h>
+#include <linux/backlight.h>
#include <asm/uaccess.h>
+#include <linux/dmi.h>
+#include <linux/jiffies.h>
+#include <linux/workqueue.h>
+
#include <acpi/acpi_drivers.h>
#include <acpi/acnamesp.h>
@@ -88,7 +100,7 @@
#define IBM_FILE "ibm_acpi"
#define IBM_URL "http://ibm-acpi.sf.net/"
-MODULE_AUTHOR("Borislav Deianov");
+MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
MODULE_DESCRIPTION(IBM_DESC);
MODULE_VERSION(IBM_VERSION);
MODULE_LICENSE("GPL");
@@ -116,28 +128,6 @@ static acpi_handle root_handle = NULL;
static char *object##_path; \
static char *object##_paths[] = { paths }
-/*
- * The following models are supported to various degrees:
- *
- * 570, 600e, 600x, 770e, 770x
- * A20m, A21e, A21m, A21p, A22p, A30, A30p, A31, A31p
- * G40, G41
- * R30, R31, R32, R40, R40e, R50, R50e, R50p, R51
- * T20, T21, T22, T23, T30, T40, T40p, T41, T41p, T42, T42p, T43
- * X20, X21, X22, X23, X24, X30, X31, X40
- *
- * The following models have no supported features:
- *
- * 240, 240x, i1400
- *
- * Still missing DSDTs for the following models:
- *
- * A20p, A22e, A22m
- * R52
- * S31
- * T43p
- */
-
IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
"\\_SB.PCI.ISA.EC", /* 570 */
"\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
@@ -167,8 +157,10 @@ IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
"\\_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 */
@@ -183,6 +175,7 @@ IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
"_EJ0", /* 770x */
); /* all others */
+#endif
/* don't list other alternatives as we install a notify handler on the 570 */
IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
@@ -203,7 +196,7 @@ IBM_HANDLE(led, ec, "SLED", /* 570 */
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 */
+IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
"\\FSPD", /* 600e/x, 770e, 770x */
@@ -216,6 +209,152 @@ IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
#define IBM_HKEY_HID "IBM0068"
#define IBM_PCI_HID "PNP0A03"
+enum thermal_access_mode {
+ IBMACPI_THERMAL_NONE = 0, /* No thermal support */
+ IBMACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
+ IBMACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
+ IBMACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
+ IBMACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
+};
+
+#define IBMACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
+struct ibm_thermal_sensors_struct {
+ s32 temp[IBMACPI_MAX_THERMAL_SENSORS];
+};
+
+/*
+ * 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.
+ */
+
+enum fan_status_access_mode {
+ IBMACPI_FAN_NONE = 0, /* No fan status or control */
+ IBMACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
+ IBMACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
+};
+
+enum fan_control_access_mode {
+ IBMACPI_FAN_WR_NONE = 0, /* No fan control */
+ IBMACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
+ IBMACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
+ IBMACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
+};
+
+enum fan_control_commands {
+ IBMACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
+ IBMACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
+ IBMACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
+ * and also watchdog cmd */
+};
+
+enum { /* Fan control constants */
+ fan_status_offset = 0x2f, /* EC register 0x2f */
+ fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
+ * 0x84 must be read before 0x85 */
+
+ IBMACPI_FAN_EC_DISENGAGED = 0x40, /* EC mode: tachometer
+ * disengaged */
+ IBMACPI_FAN_EC_AUTO = 0x80, /* EC mode: auto fan
+ * control */
+};
+
+static char *ibm_thinkpad_ec_found = NULL;
+
struct ibm_struct {
char *name;
char param[32];
@@ -243,6 +382,8 @@ struct ibm_struct {
static struct proc_dir_entry *proc_dir = NULL;
+static struct backlight_device *ibm_backlight_device = 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)))
@@ -581,8 +722,7 @@ static int wan_status(void)
{
int status;
- if (!wan_supported ||
- !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
+ if (!wan_supported || !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
status = 0;
return status;
@@ -630,12 +770,15 @@ static int wan_write(char *buf)
return 0;
}
-static int video_supported;
-static int video_orig_autosw;
+enum video_access_mode {
+ IBMACPI_VIDEO_NONE = 0,
+ IBMACPI_VIDEO_570, /* 570 */
+ IBMACPI_VIDEO_770, /* 600e/x, 770e, 770x */
+ IBMACPI_VIDEO_NEW, /* all others */
+};
-#define VIDEO_570 1
-#define VIDEO_770 2
-#define VIDEO_NEW 3
+static enum video_access_mode video_supported;
+static int video_orig_autosw;
static int video_init(void)
{
@@ -647,16 +790,16 @@ static int video_init(void)
if (!vid_handle)
/* video switching not supported on R30, R31 */
- video_supported = 0;
+ video_supported = IBMACPI_VIDEO_NONE;
else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
/* 570 */
- video_supported = VIDEO_570;
+ video_supported = IBMACPI_VIDEO_570;
else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
/* 600e/x, 770e, 770x */
- video_supported = VIDEO_770;
+ video_supported = IBMACPI_VIDEO_770;
else
/* all others */
- video_supported = VIDEO_NEW;
+ video_supported = IBMACPI_VIDEO_NEW;
return 0;
}
@@ -666,15 +809,15 @@ static int video_status(void)
int status = 0;
int i;
- if (video_supported == VIDEO_570) {
+ if (video_supported == IBMACPI_VIDEO_570) {
if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87))
status = i & 3;
- } else if (video_supported == VIDEO_770) {
+ } else if (video_supported == IBMACPI_VIDEO_770) {
if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
status |= 0x01 * i;
if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
status |= 0x02 * i;
- } else if (video_supported == VIDEO_NEW) {
+ } else if (video_supported == IBMACPI_VIDEO_NEW) {
acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
status |= 0x02 * i;
@@ -693,9 +836,10 @@ static int video_autosw(void)
{
int autosw = 0;
- if (video_supported == VIDEO_570)
+ if (video_supported == IBMACPI_VIDEO_570)
acpi_evalf(vid_handle, &autosw, "SWIT", "d");
- else if (video_supported == VIDEO_770 || video_supported == VIDEO_NEW)
+ else if (video_supported == IBMACPI_VIDEO_770 ||
+ video_supported == IBMACPI_VIDEO_NEW)
acpi_evalf(vid_handle, &autosw, "^VDEE", "d");
return autosw & 1;
@@ -715,12 +859,12 @@ static int video_read(char *p)
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 == VIDEO_NEW)
+ 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 == VIDEO_NEW)
+ 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");
@@ -735,7 +879,7 @@ static int video_switch(void)
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
return -EIO;
- ret = video_supported == VIDEO_570 ?
+ ret = video_supported == IBMACPI_VIDEO_570 ?
acpi_evalf(ec_handle, NULL, "_Q16", "v") :
acpi_evalf(vid_handle, NULL, "VSWT", "v");
acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw);
@@ -745,9 +889,9 @@ static int video_switch(void)
static int video_expand(void)
{
- if (video_supported == VIDEO_570)
+ if (video_supported == IBMACPI_VIDEO_570)
return acpi_evalf(ec_handle, NULL, "_Q17", "v");
- else if (video_supported == VIDEO_770)
+ else if (video_supported == IBMACPI_VIDEO_770)
return acpi_evalf(vid_handle, NULL, "VEXP", "v");
else
return acpi_evalf(NULL, NULL, "\\VEXP", "v");
@@ -757,10 +901,10 @@ static int video_switch2(int status)
{
int ret;
- if (video_supported == VIDEO_570) {
+ if (video_supported == IBMACPI_VIDEO_570) {
ret = acpi_evalf(NULL, NULL,
"\\_SB.PHS2", "vdd", 0x8b, status | 0x80);
- } else if (video_supported == VIDEO_770) {
+ } else if (video_supported == IBMACPI_VIDEO_770) {
int autosw = video_autosw();
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
return -EIO;
@@ -796,10 +940,10 @@ static int video_write(char *buf)
enable |= 0x02;
} else if (strlencmp(cmd, "crt_disable") == 0) {
disable |= 0x02;
- } else if (video_supported == VIDEO_NEW &&
+ } else if (video_supported == IBMACPI_VIDEO_NEW &&
strlencmp(cmd, "dvi_enable") == 0) {
enable |= 0x08;
- } else if (video_supported == VIDEO_NEW &&
+ } else if (video_supported == IBMACPI_VIDEO_NEW &&
strlencmp(cmd, "dvi_disable") == 0) {
disable |= 0x08;
} else if (strlencmp(cmd, "auto_enable") == 0) {
@@ -898,6 +1042,7 @@ 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;
@@ -907,6 +1052,7 @@ static int _sta(acpi_handle handle)
return status;
}
+#endif
#ifdef CONFIG_ACPI_IBM_DOCK
#define dock_docked() (_sta(dock_handle) & 1)
@@ -972,6 +1118,7 @@ static void dock_notify(struct ibm_struct *ibm, u32 event)
}
#endif
+#ifdef CONFIG_ACPI_IBM_BAY
static int bay_status_supported;
static int bay_status2_supported;
static int bay_eject_supported;
@@ -1047,6 +1194,7 @@ static void bay_notify(struct ibm_struct *ibm, u32 event)
{
acpi_bus_generate_event(ibm->device, event, 0);
}
+#endif
static int cmos_read(char *p)
{
@@ -1094,26 +1242,28 @@ static int cmos_write(char *buf)
return 0;
}
-static int led_supported;
-
-#define LED_570 1
-#define LED_OLD 2
-#define LED_NEW 3
+enum led_access_mode {
+ IBMACPI_LED_NONE = 0,
+ IBMACPI_LED_570, /* 570 */
+ IBMACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
+ IBMACPI_LED_NEW, /* all others */
+};
+static enum led_access_mode led_supported;
static int led_init(void)
{
if (!led_handle)
/* led not supported on R30, R31 */
- led_supported = 0;
+ led_supported = IBMACPI_LED_NONE;
else if (strlencmp(led_path, "SLED") == 0)
/* 570 */
- led_supported = LED_570;
+ led_supported = IBMACPI_LED_570;
else if (strlencmp(led_path, "SYSL") == 0)
/* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
- led_supported = LED_OLD;
+ led_supported = IBMACPI_LED_OLD;
else
/* all others */
- led_supported = LED_NEW;
+ led_supported = IBMACPI_LED_NEW;
return 0;
}
@@ -1130,7 +1280,7 @@ static int led_read(char *p)
}
len += sprintf(p + len, "status:\t\tsupported\n");
- if (led_supported == LED_570) {
+ if (led_supported == IBMACPI_LED_570) {
/* 570 */
int i, status;
for (i = 0; i < 8; i++) {
@@ -1179,13 +1329,13 @@ static int led_write(char *buf)
} else
return -EINVAL;
- if (led_supported == LED_570) {
+ if (led_supported == IBMACPI_LED_570) {
/* 570 */
led = 1 << led;
if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
led, led_sled_arg1[ind]))
return -EIO;
- } else if (led_supported == LED_OLD) {
+ } else if (led_supported == IBMACPI_LED_OLD) {
/* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
led = 1 << led;
ret = ec_write(EC_HLMS, led);
@@ -1272,50 +1422,142 @@ static int acpi_ec_write(int i, u8 v)
return 1;
}
-static int thermal_tmp_supported;
-static int thermal_updt_supported;
+static enum thermal_access_mode thermal_read_mode;
static int thermal_init(void)
{
- /* temperatures not supported on 570, G4x, R30, R31, R32 */
- thermal_tmp_supported = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
+ u8 t, ta1, ta2;
+ int i;
+ int acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
+
+ if (ibm_thinkpad_ec_found && experimental) {
+ /*
+ * Direct EC access mode: sensors at registers
+ * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
+ * non-implemented, thermal sensors return 0x80 when
+ * not available
+ */
- /* 600e/x, 770e, 770x */
- thermal_updt_supported = acpi_evalf(ec_handle, NULL, "UPDT", "qv");
+ ta1 = ta2 = 0;
+ for (i = 0; i < 8; i++) {
+ if (likely(acpi_ec_read(0x78 + i, &t))) {
+ ta1 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ if (likely(acpi_ec_read(0xC0 + i, &t))) {
+ ta2 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ }
+ if (ta1 == 0) {
+ /* This is sheer paranoia, but we handle it anyway */
+ if (acpi_tmp7) {
+ printk(IBM_ERR
+ "ThinkPad ACPI EC access misbehaving, "
+ "falling back to ACPI TMPx access mode\n");
+ thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
+ } else {
+ printk(IBM_ERR
+ "ThinkPad ACPI EC access misbehaving, "
+ "disabling thermal sensors access\n");
+ thermal_read_mode = IBMACPI_THERMAL_NONE;
+ }
+ } else {
+ thermal_read_mode =
+ (ta2 != 0) ?
+ IBMACPI_THERMAL_TPEC_16 : IBMACPI_THERMAL_TPEC_8;
+ }
+ } else if (acpi_tmp7) {
+ if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
+ /* 600e/x, 770e, 770x */
+ thermal_read_mode = IBMACPI_THERMAL_ACPI_UPDT;
+ } else {
+ /* Standard ACPI TMPx access, max 8 sensors */
+ thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
+ }
+ } else {
+ /* temperatures not supported on 570, G4x, R30, R31, R32 */
+ thermal_read_mode = IBMACPI_THERMAL_NONE;
+ }
return 0;
}
-static int thermal_read(char *p)
+static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
{
- int len = 0;
+ int i, t;
+ s8 tmp;
+ char tmpi[] = "TMPi";
- if (!thermal_tmp_supported)
- len += sprintf(p + len, "temperatures:\tnot supported\n");
- else {
- int i, t;
- char tmpi[] = "TMPi";
- s8 tmp[8];
+ if (!s)
+ return -EINVAL;
- if (thermal_updt_supported)
- if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
+ switch (thermal_read_mode) {
+#if IBMACPI_MAX_THERMAL_SENSORS >= 16
+ case IBMACPI_THERMAL_TPEC_16:
+ for (i = 0; i < 8; i++) {
+ if (!acpi_ec_read(0xC0 + i, &tmp))
+ return -EIO;
+ s->temp[i + 8] = tmp * 1000;
+ }
+ /* fallthrough */
+#endif
+ case IBMACPI_THERMAL_TPEC_8:
+ for (i = 0; i < 8; i++) {
+ if (!acpi_ec_read(0x78 + i, &tmp))
return -EIO;
+ s->temp[i] = tmp * 1000;
+ }
+ return (thermal_read_mode == IBMACPI_THERMAL_TPEC_16) ? 16 : 8;
+ case IBMACPI_THERMAL_ACPI_UPDT:
+ if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
+ return -EIO;
for (i = 0; i < 8; i++) {
tmpi[3] = '0' + i;
if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
return -EIO;
- if (thermal_updt_supported)
- tmp[i] = (t - 2732 + 5) / 10;
- else
- tmp[i] = t;
+ s->temp[i] = (t - 2732) * 100;
}
+ return 8;
- len += sprintf(p + len,
- "temperatures:\t%d %d %d %d %d %d %d %d\n",
- tmp[0], tmp[1], tmp[2], tmp[3],
- tmp[4], tmp[5], tmp[6], tmp[7]);
+ case IBMACPI_THERMAL_ACPI_TMP07:
+ for (i = 0; i < 8; i++) {
+ tmpi[3] = '0' + i;
+ if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
+ return -EIO;
+ s->temp[i] = t * 1000;
+ }
+ return 8;
+
+ case IBMACPI_THERMAL_NONE:
+ default:
+ return 0;
}
+}
+
+static int thermal_read(char *p)
+{
+ int len = 0;
+ int n, i;
+ struct ibm_thermal_sensors_struct t;
+
+ n = thermal_get_sensors(&t);
+ if (unlikely(n < 0))
+ return n;
+
+ len += sprintf(p + len, "temperatures:\t");
+
+ if (n > 0) {
+ for (i = 0; i < (n - 1); i++)
+ len += sprintf(p + len, "%d ", t.temp[i] / 1000);
+ len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
+ } else
+ len += sprintf(p + len, "not supported\n");
return len;
}
@@ -1381,12 +1623,23 @@ static int ecdump_write(char *buf)
static int brightness_offset = 0x31;
+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_read(char *p)
{
int len = 0;
- u8 level;
+ int level;
- if (!acpi_ec_read(brightness_offset, &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);
@@ -1401,16 +1654,34 @@ static int brightness_read(char *p)
#define BRIGHTNESS_UP 4
#define BRIGHTNESS_DOWN 5
-static int brightness_write(char *buf)
+static int brightness_set(int value)
{
int cmos_cmd, inc, i;
- u8 level;
+ int current_value = brightness_get(NULL);
+
+ value &= 7;
+
+ cmos_cmd = value > current_value ? BRIGHTNESS_UP : BRIGHTNESS_DOWN;
+ inc = value > current_value ? 1 : -1;
+ for (i = current_value; i != value; i += inc) {
+ if (!cmos_eval(cmos_cmd))
+ return -EIO;
+ if (!acpi_ec_write(brightness_offset, i + inc))
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int brightness_write(char *buf)
+{
+ int level;
int new_level;
char *cmd;
while ((cmd = next_cmd(&buf))) {
- if (!acpi_ec_read(brightness_offset, &level))
- return -EIO;
+ if ((level = brightness_get(NULL)) < 0)
+ return level;
level &= 7;
if (strlencmp(cmd, "up") == 0) {
@@ -1423,19 +1694,44 @@ static int brightness_write(char *buf)
} else
return -EINVAL;
- cmos_cmd = new_level > level ? BRIGHTNESS_UP : BRIGHTNESS_DOWN;
- inc = new_level > level ? 1 : -1;
- for (i = level; i != new_level; i += inc) {
- if (!cmos_eval(cmos_cmd))
- return -EIO;
- if (!acpi_ec_write(brightness_offset, i + inc))
- return -EIO;
- }
+ brightness_set(new_level);
}
return 0;
}
+static int brightness_update_status(struct backlight_device *bd)
+{
+ return brightness_set(bd->props->brightness);
+}
+
+static struct backlight_properties ibm_backlight_data = {
+ .owner = THIS_MODULE,
+ .get_brightness = brightness_get,
+ .update_status = brightness_update_status,
+ .max_brightness = 7,
+};
+
+static int brightness_init(void)
+{
+ 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);
+ }
+
+ return 0;
+}
+
+static void brightness_exit(void)
+{
+ if (ibm_backlight_device) {
+ backlight_device_unregister(ibm_backlight_device);
+ ibm_backlight_device = NULL;
+ }
+}
+
static int volume_offset = 0x30;
static int volume_read(char *p)
@@ -1522,86 +1818,482 @@ static int volume_write(char *buf)
return 0;
}
-static int fan_status_offset = 0x2f;
-static int fan_rpm_offset = 0x84;
+static enum fan_status_access_mode fan_status_access_mode;
+static enum fan_control_access_mode fan_control_access_mode;
+static enum fan_control_commands fan_control_commands;
-static int fan_read(char *p)
+static int fan_control_status_known;
+static u8 fan_control_initial_status;
+
+static void fan_watchdog_fire(struct work_struct *ignored);
+static int fan_watchdog_maxinterval;
+static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
+
+static int fan_init(void)
{
- int len = 0;
- int s;
- u8 lo, hi, status;
+ fan_status_access_mode = IBMACPI_FAN_NONE;
+ fan_control_access_mode = IBMACPI_FAN_WR_NONE;
+ fan_control_commands = 0;
+ fan_control_status_known = 1;
+ fan_watchdog_maxinterval = 0;
if (gfan_handle) {
/* 570, 600e/x, 770e, 770x */
- if (!acpi_evalf(gfan_handle, &s, NULL, "d"))
- return -EIO;
+ fan_status_access_mode = IBMACPI_FAN_RD_ACPI_GFAN;
+ } else {
+ /* all other ThinkPads: note that even old-style
+ * ThinkPad ECs supports the fan control register */
+ if (likely(acpi_ec_read(fan_status_offset,
+ &fan_control_initial_status))) {
+ fan_status_access_mode = IBMACPI_FAN_RD_TPEC;
+
+ /* In some ThinkPads, neither the EC nor the ACPI
+ * DSDT initialize the fan status, and it ends up
+ * being set to 0x07 when it *could* be either
+ * 0x07 or 0x80.
+ *
+ * Enable for TP-1Y (T43), TP-78 (R51e),
+ * TP-76 (R52), TP-70 (T43, R52), which are known
+ * to be buggy. */
+ if (fan_control_initial_status == 0x07 &&
+ ibm_thinkpad_ec_found &&
+ ((ibm_thinkpad_ec_found[0] == '1' &&
+ ibm_thinkpad_ec_found[1] == 'Y') ||
+ (ibm_thinkpad_ec_found[0] == '7' &&
+ (ibm_thinkpad_ec_found[1] == '6' ||
+ ibm_thinkpad_ec_found[1] == '8' ||
+ ibm_thinkpad_ec_found[1] == '0'))
+ )) {
+ printk(IBM_NOTICE
+ "fan_init: initial fan status is "
+ "unknown, assuming it is in auto "
+ "mode\n");
+ fan_control_status_known = 0;
+ }
+ } else {
+ printk(IBM_ERR
+ "ThinkPad ACPI EC access misbehaving, "
+ "fan status and control unavailable\n");
+ return 0;
+ }
+ }
- len += sprintf(p + len, "level:\t\t%d\n", s);
+ if (sfan_handle) {
+ /* 570, 770x-JL */
+ fan_control_access_mode = IBMACPI_FAN_WR_ACPI_SFAN;
+ fan_control_commands |=
+ IBMACPI_FAN_CMD_LEVEL | IBMACPI_FAN_CMD_ENABLE;
} else {
+ if (!gfan_handle) {
+ /* gfan without sfan means no fan control */
+ /* all other models implement TP EC 0x2f control */
+
+ if (fans_handle) {
+ /* X31, X40, X41 */
+ fan_control_access_mode =
+ IBMACPI_FAN_WR_ACPI_FANS;
+ fan_control_commands |=
+ IBMACPI_FAN_CMD_SPEED |
+ IBMACPI_FAN_CMD_LEVEL |
+ IBMACPI_FAN_CMD_ENABLE;
+ } else {
+ fan_control_access_mode = IBMACPI_FAN_WR_TPEC;
+ fan_control_commands |=
+ IBMACPI_FAN_CMD_LEVEL |
+ IBMACPI_FAN_CMD_ENABLE;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int fan_get_status(u8 *status)
+{
+ u8 s;
+
+ /* TODO:
+ * Add IBMACPI_FAN_RD_ACPI_FANS ? */
+
+ switch (fan_status_access_mode) {
+ case IBMACPI_FAN_RD_ACPI_GFAN:
+ /* 570, 600e/x, 770e, 770x */
+
+ if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
+ return -EIO;
+
+ if (likely(status))
+ *status = s & 0x07;
+
+ break;
+
+ case IBMACPI_FAN_RD_TPEC:
/* all except 570, 600e/x, 770e, 770x */
- if (!acpi_ec_read(fan_status_offset, &status))
- len += sprintf(p + len, "status:\t\tunreadable\n");
- else
- len += sprintf(p + len, "status:\t\t%s\n",
- enabled(status, 7));
+ if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
+ return -EIO;
- if (!acpi_ec_read(fan_rpm_offset, &lo) ||
- !acpi_ec_read(fan_rpm_offset + 1, &hi))
- len += sprintf(p + len, "speed:\t\tunreadable\n");
- else
- len += sprintf(p + len, "speed:\t\t%d\n",
- (hi << 8) + lo);
+ if (likely(status))
+ *status = s;
+
+ break;
+
+ default:
+ return -ENXIO;
}
- if (sfan_handle)
- /* 570, 770x-JL */
- len += sprintf(p + len, "commands:\tlevel <level>"
- " (<level> is 0-7)\n");
- if (!gfan_handle)
+ return 0;
+}
+
+static int fan_get_speed(unsigned int *speed)
+{
+ u8 hi, lo;
+
+ switch (fan_status_access_mode) {
+ case IBMACPI_FAN_RD_TPEC:
/* all except 570, 600e/x, 770e, 770x */
- len += sprintf(p + len, "commands:\tenable, disable\n");
- if (fans_handle)
- /* X31, X40 */
+ 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_exit(void)
+{
+ cancel_delayed_work(&fan_watchdog_task);
+ flush_scheduled_work();
+}
+
+static void fan_watchdog_reset(void)
+{
+ static int fan_watchdog_active = 0;
+
+ if (fan_watchdog_active)
+ cancel_delayed_work(&fan_watchdog_task);
+
+ if (fan_watchdog_maxinterval > 0) {
+ fan_watchdog_active = 1;
+ if (!schedule_delayed_work(&fan_watchdog_task,
+ msecs_to_jiffies(fan_watchdog_maxinterval
+ * 1000))) {
+ printk(IBM_ERR "failed to schedule the fan watchdog, "
+ "watchdog will not trigger\n");
+ }
+ } else
+ fan_watchdog_active = 0;
+}
+
+static int fan_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(char *buf)
+static int fan_set_level(int level)
{
- char *cmd;
- int level, speed;
-
- while ((cmd = next_cmd(&buf))) {
- if (sfan_handle &&
- sscanf(cmd, "level %d", &level) == 1 &&
- level >= 0 && level <= 7) {
- /* 570, 770x-JL */
+ switch (fan_control_access_mode) {
+ case IBMACPI_FAN_WR_ACPI_SFAN:
+ if (level >= 0 && level <= 7) {
if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
return -EIO;
- } else if (!gfan_handle && strlencmp(cmd, "enable") == 0) {
- /* all except 570, 600e/x, 770e, 770x */
- if (!acpi_ec_write(fan_status_offset, 0x80))
- return -EIO;
- } else if (!gfan_handle && strlencmp(cmd, "disable") == 0) {
- /* all except 570, 600e/x, 770e, 770x */
- if (!acpi_ec_write(fan_status_offset, 0x00))
- return -EIO;
- } else if (fans_handle &&
- sscanf(cmd, "speed %d", &speed) == 1 &&
- speed >= 0 && speed <= 65535) {
- /* X31, X40 */
+ } else
+ return -EINVAL;
+ break;
+
+ case IBMACPI_FAN_WR_ACPI_FANS:
+ case IBMACPI_FAN_WR_TPEC:
+ if ((level != IBMACPI_FAN_EC_AUTO) &&
+ (level != IBMACPI_FAN_EC_DISENGAGED) &&
+ ((level < 0) || (level > 7)))
+ return -EINVAL;
+
+ if (!acpi_ec_write(fan_status_offset, level))
+ return -EIO;
+ else
+ fan_control_status_known = 1;
+ break;
+
+ default:
+ return -ENXIO;
+ }
+ return 0;
+}
+
+static int fan_set_enable(void)
+{
+ u8 s;
+ int rc;
+
+ switch (fan_control_access_mode) {
+ case IBMACPI_FAN_WR_ACPI_FANS:
+ case IBMACPI_FAN_WR_TPEC:
+ if ((rc = fan_get_status(&s)) < 0)
+ return rc;
+
+ /* Don't go out of emergency fan mode */
+ if (s != 7)
+ s = IBMACPI_FAN_EC_AUTO;
+
+ if (!acpi_ec_write(fan_status_offset, s))
+ return -EIO;
+ else
+ fan_control_status_known = 1;
+ break;
+
+ case IBMACPI_FAN_WR_ACPI_SFAN:
+ if ((rc = fan_get_status(&s)) < 0)
+ return rc;
+
+ s &= 0x07;
+
+ /* Set fan to at least level 4 */
+ if (s < 4)
+ s = 4;
+
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
+ return -EIO;
+ break;
+
+ default:
+ return -ENXIO;
+ }
+ return 0;
+}
+
+static int fan_set_disable(void)
+{
+ switch (fan_control_access_mode) {
+ case IBMACPI_FAN_WR_ACPI_FANS:
+ case IBMACPI_FAN_WR_TPEC:
+ if (!acpi_ec_write(fan_status_offset, 0x00))
+ return -EIO;
+ else
+ fan_control_status_known = 1;
+ break;
+
+ case IBMACPI_FAN_WR_ACPI_SFAN:
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
+ return -EIO;
+ break;
+
+ default:
+ return -ENXIO;
+ }
+ return 0;
+}
+
+static int fan_set_speed(int speed)
+{
+ switch (fan_control_access_mode) {
+ case IBMACPI_FAN_WR_ACPI_FANS:
+ if (speed >= 0 && speed <= 65535) {
if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
speed, speed, speed))
return -EIO;
} else
return -EINVAL;
- }
+ break;
+ default:
+ return -ENXIO;
+ }
return 0;
}
+static int fan_write_cmd_level(const char *cmd, int *rc)
+{
+ int level;
+
+ if (strlencmp(cmd, "level auto") == 0)
+ level = IBMACPI_FAN_EC_AUTO;
+ else if (strlencmp(cmd, "level disengaged") == 0)
+ level = IBMACPI_FAN_EC_DISENGAGED;
+ else if (sscanf(cmd, "level %d", &level) != 1)
+ return 0;
+
+ if ((*rc = fan_set_level(level)) == -ENXIO)
+ printk(IBM_ERR "level command accepted for unsupported "
+ "access mode %d", fan_control_access_mode);
+
+ return 1;
+}
+
+static int fan_write_cmd_enable(const char *cmd, int *rc)
+{
+ if (strlencmp(cmd, "enable") != 0)
+ return 0;
+
+ if ((*rc = fan_set_enable()) == -ENXIO)
+ printk(IBM_ERR "enable command accepted for unsupported "
+ "access mode %d", fan_control_access_mode);
+
+ return 1;
+}
+
+static int fan_write_cmd_disable(const char *cmd, int *rc)
+{
+ if (strlencmp(cmd, "disable") != 0)
+ return 0;
+
+ if ((*rc = fan_set_disable()) == -ENXIO)
+ printk(IBM_ERR "disable command accepted for unsupported "
+ "access mode %d", fan_control_access_mode);
+
+ return 1;
+}
+
+static int fan_write_cmd_speed(const char *cmd, int *rc)
+{
+ int speed;
+
+ /* TODO:
+ * Support speed <low> <medium> <high> ? */
+
+ if (sscanf(cmd, "speed %d", &speed) != 1)
+ return 0;
+
+ if ((*rc = fan_set_speed(speed)) == -ENXIO)
+ printk(IBM_ERR "speed command accepted for unsupported "
+ "access mode %d", fan_control_access_mode);
+
+ return 1;
+}
+
+static int fan_write_cmd_watchdog(const char *cmd, int *rc)
+{
+ int interval;
+
+ if (sscanf(cmd, "watchdog %d", &interval) != 1)
+ return 0;
+
+ if (interval < 0 || interval > 120)
+ *rc = -EINVAL;
+ else
+ fan_watchdog_maxinterval = interval;
+
+ return 1;
+}
+
+static int fan_write(char *buf)
+{
+ char *cmd;
+ int rc = 0;
+
+ while (!rc && (cmd = next_cmd(&buf))) {
+ if (!((fan_control_commands & IBMACPI_FAN_CMD_LEVEL) &&
+ fan_write_cmd_level(cmd, &rc)) &&
+ !((fan_control_commands & IBMACPI_FAN_CMD_ENABLE) &&
+ (fan_write_cmd_enable(cmd, &rc) ||
+ fan_write_cmd_disable(cmd, &rc) ||
+ fan_write_cmd_watchdog(cmd, &rc))) &&
+ !((fan_control_commands & IBMACPI_FAN_CMD_SPEED) &&
+ fan_write_cmd_speed(cmd, &rc))
+ )
+ rc = -EINVAL;
+ else if (!rc)
+ fan_watchdog_reset();
+ }
+
+ return rc;
+}
+
+static void fan_watchdog_fire(struct work_struct *ignored)
+{
+ printk(IBM_NOTICE "fan watchdog: enabling fan\n");
+ if (fan_set_enable()) {
+ printk(IBM_ERR "fan watchdog: error while enabling fan\n");
+ /* reschedule for later */
+ fan_watchdog_reset();
+ }
+}
+
static struct ibm_struct ibms[] = {
{
.name = "driver",
@@ -1662,6 +2354,7 @@ static struct ibm_struct ibms[] = {
.type = ACPI_SYSTEM_NOTIFY,
},
#endif
+#ifdef CONFIG_ACPI_IBM_BAY
{
.name = "bay",
.init = bay_init,
@@ -1671,6 +2364,7 @@ static struct ibm_struct ibms[] = {
.handle = &bay_handle,
.type = ACPI_SYSTEM_NOTIFY,
},
+#endif
{
.name = "cmos",
.read = cmos_read,
@@ -1702,6 +2396,8 @@ static struct ibm_struct ibms[] = {
.name = "brightness",
.read = brightness_read,
.write = brightness_write,
+ .init = brightness_init,
+ .exit = brightness_exit,
},
{
.name = "volume",
@@ -1712,6 +2408,8 @@ static struct ibm_struct ibms[] = {
.name = "fan",
.read = fan_read,
.write = fan_write,
+ .init = fan_init,
+ .exit = fan_exit,
.experimental = 1,
},
};
@@ -1719,7 +2417,7 @@ 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 = (struct ibm_struct *)data;
+ struct ibm_struct *ibm = data;
int len;
if (!ibm || !ibm->read)
@@ -1744,7 +2442,7 @@ static int dispatch_read(char *page, char **start, off_t off, int count,
static int dispatch_write(struct file *file, const char __user * userbuf,
unsigned long count, void *data)
{
- struct ibm_struct *ibm = (struct ibm_struct *)data;
+ struct ibm_struct *ibm = data;
char *kernbuf;
int ret;
@@ -1773,7 +2471,7 @@ static int dispatch_write(struct file *file, const char __user * userbuf,
static void dispatch_notify(acpi_handle handle, u32 event, void *data)
{
- struct ibm_struct *ibm = (struct ibm_struct *)data;
+ struct ibm_struct *ibm = data;
if (!ibm || !ibm->notify)
return;
@@ -1805,7 +2503,7 @@ static int __init setup_notify(struct ibm_struct *ibm)
ibm->name, status);
return -ENODEV;
}
-
+ ibm->notify_installed = 1;
return 0;
}
@@ -1818,14 +2516,13 @@ static int __init register_driver(struct ibm_struct *ibm)
{
int ret;
- ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL);
+ ibm->driver = kzalloc(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);
+ sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name);
ibm->driver->ids = ibm->hid;
ibm->driver->ops.add = &ibm_device_add;
@@ -1882,7 +2579,6 @@ static int __init ibm_init(struct ibm_struct *ibm)
ret = setup_notify(ibm);
if (ret < 0)
return ret;
- ibm->notify_installed = 1;
}
return 0;
@@ -1954,7 +2650,9 @@ IBM_PARAM(light);
#ifdef CONFIG_ACPI_IBM_DOCK
IBM_PARAM(dock);
#endif
+#ifdef CONFIG_ACPI_IBM_BAY
IBM_PARAM(bay);
+#endif
IBM_PARAM(cmos);
IBM_PARAM(led);
IBM_PARAM(beep);
@@ -1971,6 +2669,33 @@ static void acpi_ibm_exit(void)
ibm_exit(&ibms[i]);
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)
@@ -1992,6 +2717,12 @@ static int __init acpi_ibm_init(void)
return -ENODEV;
}
+ /* Models with newer firmware report the EC in DMI */
+ ibm_thinkpad_ec_found = check_dmi_for_ec();
+ if (ibm_thinkpad_ec_found)
+ printk(IBM_INFO "ThinkPad EC firmware %s\n",
+ ibm_thinkpad_ec_found);
+
/* these handles are not required */
IBM_HANDLE_INIT(vid);
IBM_HANDLE_INIT(vid2);
@@ -2004,12 +2735,14 @@ static int __init acpi_ibm_init(void)
IBM_HANDLE_INIT(dock);
#endif
IBM_HANDLE_INIT(pci);
+#ifdef CONFIG_ACPI_IBM_BAY
IBM_HANDLE_INIT(bay);
if (bay_handle)
IBM_HANDLE_INIT(bay_ej);
IBM_HANDLE_INIT(bay2);
if (bay2_handle)
IBM_HANDLE_INIT(bay2_ej);
+#endif
IBM_HANDLE_INIT(beep);
IBM_HANDLE_INIT(ecrd);
IBM_HANDLE_INIT(ecwr);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-30 06:50:19 +0000