From 9abf0eea877d6107d3a8a5c6913450e961fb7050 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:00:58 -0200
Subject: ACPI: thinkpad-acpi: update documents for the new location

Update documentation to reflect the new location of the
thinkpad-acpi driver.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 Documentation/laptops/thinkpad-acpi.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 898b498..ddc371e 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -16,7 +16,8 @@ supported by the generic Linux ACPI drivers.
 This driver used to be named ibm-acpi until kernel 2.6.21 and release
 0.13-20070314.  It used to be in the drivers/acpi tree, but it was
 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
-2.6.22, and release 0.14.
+2.6.22, and release 0.14.  It was moved to drivers/platform/x86 for
+kernel 2.6.29.
 
 The driver is named "thinkpad-acpi".  In some places, like module
 names, "thinkpad_acpi" is used because of userspace issues.
-- 
cgit v1.1


From e0b36fc5efd610a208b6b80e821a49302ca424ab Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Sun, 11 Jan 2009 03:00:59 -0200
Subject: ACPI: thinkpad-acpi: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 3478453..ee3fa00 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2375,7 +2375,7 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 		/* forward it to userspace, maybe it knows how to handle it */
 		acpi_bus_generate_netlink_event(
 					ibm->acpi->device->pnp.device_class,
-					ibm->acpi->device->dev.bus_id,
+					dev_name(&ibm->acpi->device->dev),
 					event, 0);
 		return;
 	}
@@ -2505,7 +2505,7 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 		if (!ignore_acpi_ev && send_acpi_ev) {
 			acpi_bus_generate_netlink_event(
 					ibm->acpi->device->pnp.device_class,
-					ibm->acpi->device->dev.bus_id,
+					dev_name(&ibm->acpi->device->dev),
 					event, hkey);
 		}
 	}
@@ -3724,7 +3724,7 @@ static void dock_notify(struct ibm_struct *ibm, u32 event)
 	}
 	acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
 	acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
-					  ibm->acpi->device->dev.bus_id,
+					  dev_name(&ibm->acpi->device->dev),
 					  event, data);
 }
 
@@ -3826,7 +3826,7 @@ static void bay_notify(struct ibm_struct *ibm, u32 event)
 {
 	acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
 	acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
-					  ibm->acpi->device->dev.bus_id,
+					  dev_name(&ibm->acpi->device->dev),
 					  event, 0);
 }
 
-- 
cgit v1.1


From a73f30916ee524437253739eacc682f6fb0f3ea8 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:00 -0200
Subject: ACPI: thinkpad-acpi: debug facility to emulate the rf switches

This code is required to keep the thinkpad-acpi maintainer sane, and
it is disabled by default.

Add a debug facility to simulate an rfkill hardware rocker switch, a
bluetooth rfkill soft-switch, a WWAN rfkill soft-switch on thinkpads.

The simulated switches obviously do not kill any radios in hardware or
firmware (unlike the real one).  They also don't issue deprecated proc
events.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/Kconfig         |  11 ++
 drivers/platform/x86/thinkpad_acpi.c | 190 +++++++++++++++++++++++++++++++++++
 2 files changed, 201 insertions(+)

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index e65448e..431772b 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -192,6 +192,17 @@ config THINKPAD_ACPI
 
 	  If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
 
+config THINKPAD_ACPI_DEBUGFACILITIES
+	bool "Maintainer debug facilities"
+	depends on THINKPAD_ACPI
+	default n
+	---help---
+	  Enables extra stuff in the thinkpad-acpi which is completely useless
+	  for normal use.  Read the driver source to find out what it does.
+
+	  Say N here, unless you were told by a kernel maintainer to do
+	  otherwise.
+
 config THINKPAD_ACPI_DEBUG
 	bool "Verbose debug mode"
 	depends on THINKPAD_ACPI
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index ee3fa00..a086ce8 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -288,6 +288,16 @@ struct tpacpi_led_classdev {
 	unsigned int led;
 };
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+static int dbg_wlswemul;
+static int tpacpi_wlsw_emulstate;
+static int dbg_bluetoothemul;
+static int tpacpi_bluetooth_emulstate;
+static int dbg_wwanemul;
+static int tpacpi_wwan_emulstate;
+#endif
+
+
 /****************************************************************************
  ****************************************************************************
  *
@@ -1006,6 +1016,94 @@ static DRIVER_ATTR(version, S_IRUGO,
 
 /* --------------------------------------------------------------------- */
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+
+static void tpacpi_send_radiosw_update(void);
+
+/* wlsw_emulstate ------------------------------------------------------ */
+static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
+						char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
+}
+
+static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
+						const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	if (tpacpi_wlsw_emulstate != t) {
+		tpacpi_wlsw_emulstate = !!t;
+		tpacpi_send_radiosw_update();
+	} else
+		tpacpi_wlsw_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_wlsw_emulstate_show,
+		tpacpi_driver_wlsw_emulstate_store);
+
+/* bluetooth_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_bluetooth_emulstate_show(
+					struct device_driver *drv,
+					char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
+}
+
+static ssize_t tpacpi_driver_bluetooth_emulstate_store(
+					struct device_driver *drv,
+					const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	tpacpi_bluetooth_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_bluetooth_emulstate_show,
+		tpacpi_driver_bluetooth_emulstate_store);
+
+/* wwan_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_wwan_emulstate_show(
+					struct device_driver *drv,
+					char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
+}
+
+static ssize_t tpacpi_driver_wwan_emulstate_store(
+					struct device_driver *drv,
+					const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	tpacpi_wwan_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_wwan_emulstate_show,
+		tpacpi_driver_wwan_emulstate_store);
+
+#endif
+
+/* --------------------------------------------------------------------- */
+
 static struct driver_attribute *tpacpi_driver_attributes[] = {
 	&driver_attr_debug_level, &driver_attr_version,
 	&driver_attr_interface_version,
@@ -1022,6 +1120,15 @@ static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
 		i++;
 	}
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (!res && dbg_wlswemul)
+		res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
+	if (!res && dbg_bluetoothemul)
+		res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
+	if (!res && dbg_wwanemul)
+		res = driver_create_file(drv, &driver_attr_wwan_emulstate);
+#endif
+
 	return res;
 }
 
@@ -1031,6 +1138,12 @@ static void tpacpi_remove_driver_attributes(struct device_driver *drv)
 
 	for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
 		driver_remove_file(drv, tpacpi_driver_attributes[i]);
+
+#ifdef THINKPAD_ACPI_DEBUGFACILITIES
+	driver_remove_file(drv, &driver_attr_wlsw_emulstate);
+	driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
+	driver_remove_file(drv, &driver_attr_wwan_emulstate);
+#endif
 }
 
 /****************************************************************************
@@ -1216,6 +1329,12 @@ static struct attribute_set *hotkey_dev_attributes;
 
 static int hotkey_get_wlsw(int *status)
 {
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_wlswemul) {
+		*status = !!tpacpi_wlsw_emulstate;
+		return 0;
+	}
+#endif
 	if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
 		return -EIO;
 	return 0;
@@ -2222,6 +2341,13 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 		    hotkey_source_mask, hotkey_poll_freq);
 #endif
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_wlswemul) {
+		tp_features.hotkey_wlsw = 1;
+		printk(TPACPI_INFO
+			"radio switch emulation enabled\n");
+	} else
+#endif
 	/* Not all thinkpads have a hardware radio switch */
 	if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
 		tp_features.hotkey_wlsw = 1;
@@ -2656,6 +2782,12 @@ static int bluetooth_get_radiosw(void)
 	if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
 		return RFKILL_STATE_HARD_BLOCKED;
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_bluetoothemul)
+		return (tpacpi_bluetooth_emulstate) ?
+			RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+#endif
+
 	if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
 		return -EIO;
 
@@ -2689,6 +2821,15 @@ static int bluetooth_set_radiosw(int radio_on, int update_rfk)
 	    && radio_on)
 		return -EPERM;
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_bluetoothemul) {
+		tpacpi_bluetooth_emulstate = !!radio_on;
+		if (update_rfk)
+			bluetooth_update_rfk();
+		return 0;
+	}
+#endif
+
 	if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
 		return -EIO;
 	if (radio_on)
@@ -2792,6 +2933,13 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm)
 		str_supported(tp_features.bluetooth),
 		status);
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_bluetoothemul) {
+		tp_features.bluetooth = 1;
+		printk(TPACPI_INFO
+			"bluetooth switch emulation enabled\n");
+	} else
+#endif
 	if (tp_features.bluetooth &&
 	    !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
 		/* no bluetooth hardware present in system */
@@ -2890,6 +3038,12 @@ static int wan_get_radiosw(void)
 	if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
 		return RFKILL_STATE_HARD_BLOCKED;
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_wwanemul)
+		return (tpacpi_wwan_emulstate) ?
+			RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+#endif
+
 	if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
 		return -EIO;
 
@@ -2923,6 +3077,15 @@ static int wan_set_radiosw(int radio_on, int update_rfk)
 	    && radio_on)
 		return -EPERM;
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_wwanemul) {
+		tpacpi_wwan_emulstate = !!radio_on;
+		if (update_rfk)
+			wan_update_rfk();
+		return 0;
+	}
+#endif
+
 	if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
 		return -EIO;
 	if (radio_on)
@@ -3024,6 +3187,13 @@ static int __init wan_init(struct ibm_init_struct *iibm)
 		str_supported(tp_features.wan),
 		status);
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_wwanemul) {
+		tp_features.wan = 1;
+		printk(TPACPI_INFO
+			"wwan switch emulation enabled\n");
+	} else
+#endif
 	if (tp_features.wan &&
 	    !(status & TP_ACPI_WANCARD_HWPRESENT)) {
 		/* no wan hardware present in system */
@@ -6701,6 +6871,26 @@ TPACPI_PARAM(brightness);
 TPACPI_PARAM(volume);
 TPACPI_PARAM(fan);
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+module_param(dbg_wlswemul, uint, 0);
+MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
+module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
+MODULE_PARM_DESC(wlsw_state,
+		 "Initial state of the emulated WLSW switch");
+
+module_param(dbg_bluetoothemul, uint, 0);
+MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
+module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
+MODULE_PARM_DESC(bluetooth_state,
+		 "Initial state of the emulated bluetooth switch");
+
+module_param(dbg_wwanemul, uint, 0);
+MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
+module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
+MODULE_PARM_DESC(wwan_state,
+		 "Initial state of the emulated WWAN switch");
+#endif
+
 static void thinkpad_acpi_module_exit(void)
 {
 	struct ibm_struct *ibm, *itmp;
-- 
cgit v1.1


From 153f82207c51193e4d6a7e6f0e3f9442eabeba1c Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:01 -0200
Subject: ACPI: thinkpad-acpi: resume with radios disabled

Instruct the firmware to not enable the radios when resuming.  This
is safer, and the rfkill core will take care to manually enable any
radios that need to be enabled.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 66 ++++++++++++++++++++++++++++++------
 1 file changed, 56 insertions(+), 10 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index a086ce8..b2c5913 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -122,6 +122,27 @@ enum {
 #define TPACPI_HKEY_INPUT_PRODUCT	0x5054 /* "TP" */
 #define TPACPI_HKEY_INPUT_VERSION	0x4101
 
+/* ACPI \WGSV commands */
+enum {
+	TP_ACPI_WGSV_GET_STATE		= 0x01, /* Get state information */
+	TP_ACPI_WGSV_PWR_ON_ON_RESUME	= 0x02, /* Resume WWAN powered on */
+	TP_ACPI_WGSV_PWR_OFF_ON_RESUME	= 0x03,	/* Resume WWAN powered off */
+	TP_ACPI_WGSV_SAVE_STATE		= 0x04, /* Save state for S4/S5 */
+};
+
+/* TP_ACPI_WGSV_GET_STATE bits */
+enum {
+	TP_ACPI_WGSV_STATE_WWANEXIST	= 0x0001, /* WWAN hw available */
+	TP_ACPI_WGSV_STATE_WWANPWR	= 0x0002, /* WWAN radio enabled */
+	TP_ACPI_WGSV_STATE_WWANPWRRES	= 0x0004, /* WWAN state at resume */
+	TP_ACPI_WGSV_STATE_WWANBIOSOFF	= 0x0008, /* WWAN disabled in BIOS */
+	TP_ACPI_WGSV_STATE_BLTHEXIST	= 0x0001, /* BLTH hw available */
+	TP_ACPI_WGSV_STATE_BLTHPWR	= 0x0002, /* BLTH radio enabled */
+	TP_ACPI_WGSV_STATE_BLTHPWRRES	= 0x0004, /* BLTH state at resume */
+	TP_ACPI_WGSV_STATE_BLTHBIOSOFF	= 0x0008, /* BLTH disabled in BIOS */
+	TP_ACPI_WGSV_STATE_UWBEXIST	= 0x0010, /* UWB hw available */
+	TP_ACPI_WGSV_STATE_UWBPWR	= 0x0020, /* UWB radio enabled */
+};
 
 /****************************************************************************
  * Main driver
@@ -2766,11 +2787,28 @@ enum {
 	/* ACPI GBDC/SBDC bits */
 	TP_ACPI_BLUETOOTH_HWPRESENT	= 0x01,	/* Bluetooth hw available */
 	TP_ACPI_BLUETOOTH_RADIOSSW	= 0x02,	/* Bluetooth radio enabled */
-	TP_ACPI_BLUETOOTH_UNK		= 0x04,	/* unknown function */
+	TP_ACPI_BLUETOOTH_RESUMECTRL	= 0x04,	/* Bluetooth state at resume:
+						   off / last state */
+};
+
+enum {
+	/* ACPI \BLTH commands */
+	TP_ACPI_BLTH_GET_ULTRAPORT_ID	= 0x00, /* Get Ultraport BT ID */
+	TP_ACPI_BLTH_GET_PWR_ON_RESUME	= 0x01, /* Get power-on-resume state */
+	TP_ACPI_BLTH_PWR_ON_ON_RESUME	= 0x02, /* Resume powered on */
+	TP_ACPI_BLTH_PWR_OFF_ON_RESUME	= 0x03,	/* Resume powered off */
+	TP_ACPI_BLTH_SAVE_STATE		= 0x05, /* Save state for S4/S5 */
 };
 
 static struct rfkill *tpacpi_bluetooth_rfkill;
 
+static void bluetooth_suspend(pm_message_t state)
+{
+	/* Try to make sure radio will resume powered off */
+	acpi_evalf(NULL, NULL, "\\BLTH", "vd",
+		   TP_ACPI_BLTH_PWR_OFF_ON_RESUME);
+}
+
 static int bluetooth_get_radiosw(void)
 {
 	int status;
@@ -2830,12 +2868,11 @@ static int bluetooth_set_radiosw(int radio_on, int update_rfk)
 	}
 #endif
 
-	if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
-		return -EIO;
+	/* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
 	if (radio_on)
-		status |= TP_ACPI_BLUETOOTH_RADIOSSW;
+		status = TP_ACPI_BLUETOOTH_RADIOSSW;
 	else
-		status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
+		status = 0;
 	if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
 		return -EIO;
 
@@ -3012,6 +3049,7 @@ static struct ibm_struct bluetooth_driver_data = {
 	.read = bluetooth_read,
 	.write = bluetooth_write,
 	.exit = bluetooth_exit,
+	.suspend = bluetooth_suspend,
 };
 
 /*************************************************************************
@@ -3022,11 +3060,19 @@ enum {
 	/* ACPI GWAN/SWAN bits */
 	TP_ACPI_WANCARD_HWPRESENT	= 0x01,	/* Wan hw available */
 	TP_ACPI_WANCARD_RADIOSSW	= 0x02,	/* Wan radio enabled */
-	TP_ACPI_WANCARD_UNK		= 0x04,	/* unknown function */
+	TP_ACPI_WANCARD_RESUMECTRL	= 0x04,	/* Wan state at resume:
+						   off / last state */
 };
 
 static struct rfkill *tpacpi_wan_rfkill;
 
+static void wan_suspend(pm_message_t state)
+{
+	/* Try to make sure radio will resume powered off */
+	acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
+		   TP_ACPI_WGSV_PWR_OFF_ON_RESUME);
+}
+
 static int wan_get_radiosw(void)
 {
 	int status;
@@ -3086,12 +3132,11 @@ static int wan_set_radiosw(int radio_on, int update_rfk)
 	}
 #endif
 
-	if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
-		return -EIO;
+	/* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
 	if (radio_on)
-		status |= TP_ACPI_WANCARD_RADIOSSW;
+		status = TP_ACPI_WANCARD_RADIOSSW;
 	else
-		status &= ~TP_ACPI_WANCARD_RADIOSSW;
+		status = 0;
 	if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
 		return -EIO;
 
@@ -3266,6 +3311,7 @@ static struct ibm_struct wan_driver_data = {
 	.read = wan_read,
 	.write = wan_write,
 	.exit = wan_exit,
+	.suspend = wan_suspend,
 };
 
 /*************************************************************************
-- 
cgit v1.1


From 90d9d3c79c44bcf95bc487e9bbceaff2de370310 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:02 -0200
Subject: ACPI: thinkpad-acpi: preserve radio state across shutdown

Store in firmware NVRAM the radio state on machine shutdown for WWAN and
bluetooth.  Also, try to set the initial boot state of these radios as the
rfkill default state for their respective classes.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 59 +++++++++++++++++++++++++++++++++---
 1 file changed, 55 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index b2c5913..27d709b 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -222,6 +222,7 @@ struct ibm_struct {
 	void (*exit) (void);
 	void (*resume) (void);
 	void (*suspend) (pm_message_t state);
+	void (*shutdown) (void);
 
 	struct list_head all_drivers;
 
@@ -759,6 +760,18 @@ static int tpacpi_resume_handler(struct platform_device *pdev)
 	return 0;
 }
 
+static void tpacpi_shutdown_handler(struct platform_device *pdev)
+{
+	struct ibm_struct *ibm, *itmp;
+
+	list_for_each_entry_safe(ibm, itmp,
+				 &tpacpi_all_drivers,
+				 all_drivers) {
+		if (ibm->shutdown)
+			(ibm->shutdown)();
+	}
+}
+
 static struct platform_driver tpacpi_pdriver = {
 	.driver = {
 		.name = TPACPI_DRVR_NAME,
@@ -766,6 +779,7 @@ static struct platform_driver tpacpi_pdriver = {
 	},
 	.suspend = tpacpi_suspend_handler,
 	.resume = tpacpi_resume_handler,
+	.shutdown = tpacpi_shutdown_handler,
 };
 
 static struct platform_driver tpacpi_hwmon_pdriver = {
@@ -957,7 +971,22 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
 			int (*get_state)(void *, enum rfkill_state *))
 {
 	int res;
-	enum rfkill_state initial_state;
+	enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
+
+	res = get_state(NULL, &initial_state);
+	if (res < 0) {
+		printk(TPACPI_ERR
+			"failed to read initial state for %s, error %d; "
+			"will turn radio off\n", name, res);
+	} else {
+		/* try to set the initial state as the default for the rfkill
+		 * type, since we ask the firmware to preserve it across S5 in
+		 * NVRAM */
+		rfkill_set_default(rfktype,
+				(initial_state == RFKILL_STATE_UNBLOCKED) ?
+					RFKILL_STATE_UNBLOCKED :
+					RFKILL_STATE_SOFT_BLOCKED);
+	}
 
 	*rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
 	if (!*rfk) {
@@ -969,9 +998,7 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
 	(*rfk)->name = name;
 	(*rfk)->get_state = get_state;
 	(*rfk)->toggle_radio = toggle_radio;
-
-	if (!get_state(NULL, &initial_state))
-		(*rfk)->state = initial_state;
+	(*rfk)->state = initial_state;
 
 	res = rfkill_register(*rfk);
 	if (res < 0) {
@@ -2943,8 +2970,19 @@ static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
 	return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
 }
 
+static void bluetooth_shutdown(void)
+{
+	/* Order firmware to save current state to NVRAM */
+	if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
+			TP_ACPI_BLTH_SAVE_STATE))
+		printk(TPACPI_NOTICE
+			"failed to save bluetooth state to NVRAM\n");
+}
+
 static void bluetooth_exit(void)
 {
+	bluetooth_shutdown();
+
 	if (tpacpi_bluetooth_rfkill)
 		rfkill_unregister(tpacpi_bluetooth_rfkill);
 
@@ -3050,6 +3088,7 @@ static struct ibm_struct bluetooth_driver_data = {
 	.write = bluetooth_write,
 	.exit = bluetooth_exit,
 	.suspend = bluetooth_suspend,
+	.shutdown = bluetooth_shutdown,
 };
 
 /*************************************************************************
@@ -3207,8 +3246,19 @@ static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
 	return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
 }
 
+static void wan_shutdown(void)
+{
+	/* Order firmware to save current state to NVRAM */
+	if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
+			TP_ACPI_WGSV_SAVE_STATE))
+		printk(TPACPI_NOTICE
+			"failed to save WWAN state to NVRAM\n");
+}
+
 static void wan_exit(void)
 {
+	wan_shutdown();
+
 	if (tpacpi_wan_rfkill)
 		rfkill_unregister(tpacpi_wan_rfkill);
 
@@ -3312,6 +3362,7 @@ static struct ibm_struct wan_driver_data = {
 	.write = wan_write,
 	.exit = wan_exit,
 	.suspend = wan_suspend,
+	.shutdown = wan_shutdown,
 };
 
 /*************************************************************************
-- 
cgit v1.1


From 0045c0aa7d5e787f78938e6a10927b8a516f0b83 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:03 -0200
Subject: ACPI: thinkpad-acpi: add UWB radio support

Add rfkill support for USB UWB radio devices on very recent ThinkPad
laptop models.

The new subdriver is moslty a trimmed down copy of the wwan subdriver.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 Documentation/laptops/thinkpad-acpi.txt |  18 +++
 drivers/platform/x86/thinkpad_acpi.c    | 206 +++++++++++++++++++++++++++++++-
 2 files changed, 223 insertions(+), 1 deletion(-)

diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index ddc371e..91c0001 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -1413,6 +1413,24 @@ Sysfs notes:
 	rfkill controller switch "tpacpi_wwan_sw": refer to
 	Documentation/rfkill.txt for details.
 
+EXPERIMENTAL: UWB
+-----------------
+
+This feature is marked EXPERIMENTAL because it has not been extensively
+tested and validated in various ThinkPad models yet.  The feature may not
+work as expected. USE WITH CAUTION! To use this feature, you need to supply
+the experimental=1 parameter when loading the module.
+
+sysfs rfkill class: switch "tpacpi_uwb_sw"
+
+This feature exports an rfkill controller for the UWB device, if one is
+present and enabled in the BIOS.
+
+Sysfs notes:
+
+	rfkill controller switch "tpacpi_uwb_sw": refer to
+	Documentation/rfkill.txt for details.
+
 Multiple Commands, Module Parameters
 ------------------------------------
 
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 27d709b..c1d4041 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -169,6 +169,7 @@ enum {
 enum {
 	TPACPI_RFK_BLUETOOTH_SW_ID = 0,
 	TPACPI_RFK_WWAN_SW_ID,
+	TPACPI_RFK_UWB_SW_ID,
 };
 
 /* Debugging */
@@ -261,6 +262,7 @@ static struct {
 	u32 bright_16levels:1;
 	u32 bright_acpimode:1;
 	u32 wan:1;
+	u32 uwb:1;
 	u32 fan_ctrl_status_undef:1;
 	u32 input_device_registered:1;
 	u32 platform_drv_registered:1;
@@ -317,6 +319,8 @@ static int dbg_bluetoothemul;
 static int tpacpi_bluetooth_emulstate;
 static int dbg_wwanemul;
 static int tpacpi_wwan_emulstate;
+static int dbg_uwbemul;
+static int tpacpi_uwb_emulstate;
 #endif
 
 
@@ -967,6 +971,7 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
 			struct rfkill **rfk,
 			const enum rfkill_type rfktype,
 			const char *name,
+			const bool set_default,
 			int (*toggle_radio)(void *, enum rfkill_state),
 			int (*get_state)(void *, enum rfkill_state *))
 {
@@ -978,7 +983,7 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
 		printk(TPACPI_ERR
 			"failed to read initial state for %s, error %d; "
 			"will turn radio off\n", name, res);
-	} else {
+	} else if (set_default) {
 		/* try to set the initial state as the default for the rfkill
 		 * type, since we ask the firmware to preserve it across S5 in
 		 * NVRAM */
@@ -1148,6 +1153,31 @@ static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
 		tpacpi_driver_wwan_emulstate_show,
 		tpacpi_driver_wwan_emulstate_store);
 
+/* uwb_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_uwb_emulstate_show(
+					struct device_driver *drv,
+					char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
+}
+
+static ssize_t tpacpi_driver_uwb_emulstate_store(
+					struct device_driver *drv,
+					const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	tpacpi_uwb_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_uwb_emulstate_show,
+		tpacpi_driver_uwb_emulstate_store);
 #endif
 
 /* --------------------------------------------------------------------- */
@@ -1175,6 +1205,8 @@ static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
 		res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
 	if (!res && dbg_wwanemul)
 		res = driver_create_file(drv, &driver_attr_wwan_emulstate);
+	if (!res && dbg_uwbemul)
+		res = driver_create_file(drv, &driver_attr_uwb_emulstate);
 #endif
 
 	return res;
@@ -1191,6 +1223,7 @@ static void tpacpi_remove_driver_attributes(struct device_driver *drv)
 	driver_remove_file(drv, &driver_attr_wlsw_emulstate);
 	driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
 	driver_remove_file(drv, &driver_attr_wwan_emulstate);
+	driver_remove_file(drv, &driver_attr_uwb_emulstate);
 #endif
 }
 
@@ -2125,6 +2158,7 @@ static struct attribute *hotkey_mask_attributes[] __initdata = {
 
 static void bluetooth_update_rfk(void);
 static void wan_update_rfk(void);
+static void uwb_update_rfk(void);
 static void tpacpi_send_radiosw_update(void)
 {
 	int wlsw;
@@ -2134,6 +2168,8 @@ static void tpacpi_send_radiosw_update(void)
 		bluetooth_update_rfk();
 	if (tp_features.wan)
 		wan_update_rfk();
+	if (tp_features.uwb)
+		uwb_update_rfk();
 
 	if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
 		mutex_lock(&tpacpi_inputdev_send_mutex);
@@ -3035,6 +3071,7 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm)
 				&tpacpi_bluetooth_rfkill,
 				RFKILL_TYPE_BLUETOOTH,
 				"tpacpi_bluetooth_sw",
+				true,
 				tpacpi_bluetooth_rfk_set,
 				tpacpi_bluetooth_rfk_get);
 	if (res) {
@@ -3309,6 +3346,7 @@ static int __init wan_init(struct ibm_init_struct *iibm)
 				&tpacpi_wan_rfkill,
 				RFKILL_TYPE_WWAN,
 				"tpacpi_wwan_sw",
+				true,
 				tpacpi_wan_rfk_set,
 				tpacpi_wan_rfk_get);
 	if (res) {
@@ -3366,6 +3404,162 @@ static struct ibm_struct wan_driver_data = {
 };
 
 /*************************************************************************
+ * UWB subdriver
+ */
+
+enum {
+	/* ACPI GUWB/SUWB bits */
+	TP_ACPI_UWB_HWPRESENT	= 0x01,	/* UWB hw available */
+	TP_ACPI_UWB_RADIOSSW	= 0x02,	/* UWB radio enabled */
+};
+
+static struct rfkill *tpacpi_uwb_rfkill;
+
+static int uwb_get_radiosw(void)
+{
+	int status;
+
+	if (!tp_features.uwb)
+		return -ENODEV;
+
+	/* WLSW overrides UWB in firmware/hardware, reflect that */
+	if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
+		return RFKILL_STATE_HARD_BLOCKED;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_uwbemul)
+		return (tpacpi_uwb_emulstate) ?
+			RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+#endif
+
+	if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
+		return -EIO;
+
+	return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
+		RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+}
+
+static void uwb_update_rfk(void)
+{
+	int status;
+
+	if (!tpacpi_uwb_rfkill)
+		return;
+
+	status = uwb_get_radiosw();
+	if (status < 0)
+		return;
+	rfkill_force_state(tpacpi_uwb_rfkill, status);
+}
+
+static int uwb_set_radiosw(int radio_on, int update_rfk)
+{
+	int status;
+
+	if (!tp_features.uwb)
+		return -ENODEV;
+
+	/* WLSW overrides UWB in firmware/hardware, but there is no
+	 * reason to risk weird behaviour. */
+	if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
+	    && radio_on)
+		return -EPERM;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_uwbemul) {
+		tpacpi_uwb_emulstate = !!radio_on;
+		if (update_rfk)
+			uwb_update_rfk();
+		return 0;
+	}
+#endif
+
+	status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
+	if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
+		return -EIO;
+
+	if (update_rfk)
+		uwb_update_rfk();
+
+	return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
+{
+	int uwbs = uwb_get_radiosw();
+
+	if (uwbs < 0)
+		return uwbs;
+
+	*state = uwbs;
+	return 0;
+}
+
+static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
+{
+	return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
+}
+
+static void uwb_exit(void)
+{
+	if (tpacpi_uwb_rfkill)
+		rfkill_unregister(tpacpi_uwb_rfkill);
+}
+
+static int __init uwb_init(struct ibm_init_struct *iibm)
+{
+	int res;
+	int status = 0;
+
+	vdbg_printk(TPACPI_DBG_INIT, "initializing uwb subdriver\n");
+
+	TPACPI_ACPIHANDLE_INIT(hkey);
+
+	tp_features.uwb = hkey_handle &&
+	    acpi_evalf(hkey_handle, &status, "GUWB", "qd");
+
+	vdbg_printk(TPACPI_DBG_INIT, "uwb is %s, status 0x%02x\n",
+		str_supported(tp_features.uwb),
+		status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_uwbemul) {
+		tp_features.uwb = 1;
+		printk(TPACPI_INFO
+			"uwb switch emulation enabled\n");
+	} else
+#endif
+	if (tp_features.uwb &&
+	    !(status & TP_ACPI_UWB_HWPRESENT)) {
+		/* no uwb hardware present in system */
+		tp_features.uwb = 0;
+		dbg_printk(TPACPI_DBG_INIT,
+			   "uwb hardware not installed\n");
+	}
+
+	if (!tp_features.uwb)
+		return 1;
+
+	res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
+				&tpacpi_uwb_rfkill,
+				RFKILL_TYPE_UWB,
+				"tpacpi_uwb_sw",
+				false,
+				tpacpi_uwb_rfk_set,
+				tpacpi_uwb_rfk_get);
+
+	return res;
+}
+
+static struct ibm_struct uwb_driver_data = {
+	.name = "uwb",
+	.exit = uwb_exit,
+	.flags.experimental = 1,
+};
+
+/*************************************************************************
  * Video subdriver
  */
 
@@ -6830,6 +7024,10 @@ static struct ibm_init_struct ibms_init[] __initdata = {
 		.init = wan_init,
 		.data = &wan_driver_data,
 	},
+	{
+		.init = uwb_init,
+		.data = &uwb_driver_data,
+	},
 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
 	{
 		.init = video_init,
@@ -6986,6 +7184,12 @@ MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
 MODULE_PARM_DESC(wwan_state,
 		 "Initial state of the emulated WWAN switch");
+
+module_param(dbg_uwbemul, uint, 0);
+MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
+module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
+MODULE_PARM_DESC(uwb_state,
+		 "Initial state of the emulated UWB switch");
 #endif
 
 static void thinkpad_acpi_module_exit(void)
-- 
cgit v1.1


From 7646ea88af80a92f2775e17d4283830d7f09ea2d Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:04 -0200
Subject: ACPI: thinkpad-acpi: use killable instead of interruptible mutexes

Unfortunately, POSIX in all of its braindamage, do not state that userspace has
to deal with EINTR in read/write and friends... so, lesser code just doesn't.

Switch from *_interruptible to *_killable on the sysfs- and procfs-related
mutexes.  This closes this possible can of worms.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index c1d4041..7670c8e 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1878,7 +1878,7 @@ static ssize_t hotkey_mask_show(struct device *dev,
 {
 	int res;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 	res = hotkey_mask_get();
 	mutex_unlock(&hotkey_mutex);
@@ -1897,7 +1897,7 @@ static ssize_t hotkey_mask_store(struct device *dev,
 	if (parse_strtoul(buf, 0xffffffffUL, &t))
 		return -EINVAL;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 
 	res = hotkey_mask_set(t);
@@ -1983,7 +1983,7 @@ static ssize_t hotkey_source_mask_store(struct device *dev,
 		((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
 		return -EINVAL;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 
 	HOTKEY_CONFIG_CRITICAL_START
@@ -2018,7 +2018,7 @@ static ssize_t hotkey_poll_freq_store(struct device *dev,
 	if (parse_strtoul(buf, 25, &t))
 		return -EINVAL;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 
 	hotkey_poll_freq = t;
@@ -2754,7 +2754,7 @@ static int hotkey_read(char *p)
 		return len;
 	}
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 	res = hotkey_status_get(&status);
 	if (!res)
@@ -2785,7 +2785,7 @@ static int hotkey_write(char *buf)
 	if (!tp_features.hotkey)
 		return -ENODEV;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 
 	status = -1;
@@ -5311,7 +5311,7 @@ static int brightness_set(int value)
 	    value < 0)
 		return -EINVAL;
 
-	res = mutex_lock_interruptible(&brightness_mutex);
+	res = mutex_lock_killable(&brightness_mutex);
 	if (res < 0)
 		return res;
 
@@ -5849,7 +5849,7 @@ static int fan_get_status_safe(u8 *status)
 	int rc;
 	u8 s;
 
-	if (mutex_lock_interruptible(&fan_mutex))
+	if (mutex_lock_killable(&fan_mutex))
 		return -ERESTARTSYS;
 	rc = fan_get_status(&s);
 	if (!rc)
@@ -5932,7 +5932,7 @@ static int fan_set_level_safe(int level)
 	if (!fan_control_allowed)
 		return -EPERM;
 
-	if (mutex_lock_interruptible(&fan_mutex))
+	if (mutex_lock_killable(&fan_mutex))
 		return -ERESTARTSYS;
 
 	if (level == TPACPI_FAN_LAST_LEVEL)
@@ -5954,7 +5954,7 @@ static int fan_set_enable(void)
 	if (!fan_control_allowed)
 		return -EPERM;
 
-	if (mutex_lock_interruptible(&fan_mutex))
+	if (mutex_lock_killable(&fan_mutex))
 		return -ERESTARTSYS;
 
 	switch (fan_control_access_mode) {
@@ -6009,7 +6009,7 @@ static int fan_set_disable(void)
 	if (!fan_control_allowed)
 		return -EPERM;
 
-	if (mutex_lock_interruptible(&fan_mutex))
+	if (mutex_lock_killable(&fan_mutex))
 		return -ERESTARTSYS;
 
 	rc = 0;
@@ -6047,7 +6047,7 @@ static int fan_set_speed(int speed)
 	if (!fan_control_allowed)
 		return -EPERM;
 
-	if (mutex_lock_interruptible(&fan_mutex))
+	if (mutex_lock_killable(&fan_mutex))
 		return -ERESTARTSYS;
 
 	rc = 0;
@@ -6249,7 +6249,7 @@ static ssize_t fan_pwm1_store(struct device *dev,
 	/* scale down from 0-255 to 0-7 */
 	newlevel = (s >> 5) & 0x07;
 
-	if (mutex_lock_interruptible(&fan_mutex))
+	if (mutex_lock_killable(&fan_mutex))
 		return -ERESTARTSYS;
 
 	rc = fan_get_status(&status);
-- 
cgit v1.1


From 3827e7a3fd03718d4d204c66d9e3ab9b125ae552 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:05 -0200
Subject: ACPI: thinkpad-acpi: clean up hotkey_notify()

Clean up the hotkey_notify() handler, which handles the HKEY notifications
from the ACPI firmware.  It was getting too long and deep.

No functional changes.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 174 ++++++++++++++++++++++-------------
 1 file changed, 109 insertions(+), 65 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 7670c8e..d833ee6 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2571,13 +2571,100 @@ err_exit:
 	return (res < 0)? res : 1;
 }
 
+static bool hotkey_notify_hotkey(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x1000-0x1FFF: key presses */
+	unsigned int scancode = hkey & 0xfff;
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	if (scancode > 0 && scancode < 0x21) {
+		scancode--;
+		if (!(hotkey_source_mask & (1 << scancode))) {
+			tpacpi_input_send_key(scancode);
+			*send_acpi_ev = false;
+		} else {
+			*ignore_acpi_ev = true;
+		}
+		return true;
+	}
+	return false;
+}
+
+static bool hotkey_notify_wakeup(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x2000-0x2FFF: Wakeup reason */
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	switch (hkey) {
+	case 0x2304: /* suspend, undock */
+	case 0x2404: /* hibernation, undock */
+		hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
+		*ignore_acpi_ev = true;
+		break;
+
+	case 0x2305: /* suspend, bay eject */
+	case 0x2405: /* hibernation, bay eject */
+		hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
+		*ignore_acpi_ev = true;
+		break;
+
+	default:
+		return false;
+	}
+
+	if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
+		printk(TPACPI_INFO
+		       "woke up due to a hot-unplug "
+		       "request...\n");
+		hotkey_wakeup_reason_notify_change();
+	}
+	return true;
+}
+
+static bool hotkey_notify_usrevent(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x5000-0x5FFF: human interface helpers */
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	switch (hkey) {
+	case 0x5010: /* Lenovo new BIOS: brightness changed */
+	case 0x500b: /* X61t: tablet pen inserted into bay */
+	case 0x500c: /* X61t: tablet pen removed from bay */
+		return true;
+
+	case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
+	case 0x500a: /* X41t-X61t: swivel down (normal mode) */
+		tpacpi_input_send_tabletsw();
+		hotkey_tablet_mode_notify_change();
+		*send_acpi_ev = false;
+		return true;
+
+	case 0x5001:
+	case 0x5002:
+		/* LID switch events.  Do not propagate */
+		*ignore_acpi_ev = true;
+		return true;
+
+	default:
+		return false;
+	}
+}
+
 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 {
 	u32 hkey;
-	unsigned int scancode;
-	int send_acpi_ev;
-	int ignore_acpi_ev;
-	int unk_ev;
+	bool send_acpi_ev;
+	bool ignore_acpi_ev;
+	bool known_ev;
 
 	if (event != 0x80) {
 		printk(TPACPI_ERR
@@ -2601,105 +2688,62 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 			return;
 		}
 
-		send_acpi_ev = 1;
-		ignore_acpi_ev = 0;
-		unk_ev = 0;
+		send_acpi_ev = true;
+		ignore_acpi_ev = false;
 
 		switch (hkey >> 12) {
 		case 1:
 			/* 0x1000-0x1FFF: key presses */
-			scancode = hkey & 0xfff;
-			if (scancode > 0 && scancode < 0x21) {
-				scancode--;
-				if (!(hotkey_source_mask & (1 << scancode))) {
-					tpacpi_input_send_key(scancode);
-					send_acpi_ev = 0;
-				} else {
-					ignore_acpi_ev = 1;
-				}
-			} else {
-				unk_ev = 1;
-			}
+			known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
 			break;
 		case 2:
-			/* Wakeup reason */
-			switch (hkey) {
-			case 0x2304: /* suspend, undock */
-			case 0x2404: /* hibernation, undock */
-				hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
-				ignore_acpi_ev = 1;
-				break;
-			case 0x2305: /* suspend, bay eject */
-			case 0x2405: /* hibernation, bay eject */
-				hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
-				ignore_acpi_ev = 1;
-				break;
-			default:
-				unk_ev = 1;
-			}
-			if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
-				printk(TPACPI_INFO
-				       "woke up due to a hot-unplug "
-				       "request...\n");
-				hotkey_wakeup_reason_notify_change();
-			}
+			/* 0x2000-0x2FFF: Wakeup reason */
+			known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
 			break;
 		case 3:
-			/* bay-related wakeups */
+			/* 0x3000-0x3FFF: bay-related wakeups */
 			if (hkey == 0x3003) {
 				hotkey_autosleep_ack = 1;
 				printk(TPACPI_INFO
 				       "bay ejected\n");
 				hotkey_wakeup_hotunplug_complete_notify_change();
+				known_ev = true;
 			} else {
-				unk_ev = 1;
+				known_ev = false;
 			}
 			break;
 		case 4:
-			/* dock-related wakeups */
+			/* 0x4000-0x4FFF: dock-related wakeups */
 			if (hkey == 0x4003) {
 				hotkey_autosleep_ack = 1;
 				printk(TPACPI_INFO
 				       "undocked\n");
 				hotkey_wakeup_hotunplug_complete_notify_change();
+				known_ev = true;
 			} else {
-				unk_ev = 1;
+				known_ev = false;
 			}
 			break;
 		case 5:
 			/* 0x5000-0x5FFF: human interface helpers */
-			switch (hkey) {
-			case 0x5010: /* Lenovo new BIOS: brightness changed */
-			case 0x500b: /* X61t: tablet pen inserted into bay */
-			case 0x500c: /* X61t: tablet pen removed from bay */
-				break;
-			case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
-			case 0x500a: /* X41t-X61t: swivel down (normal mode) */
-				tpacpi_input_send_tabletsw();
-				hotkey_tablet_mode_notify_change();
-				send_acpi_ev = 0;
-				break;
-			case 0x5001:
-			case 0x5002:
-				/* LID switch events.  Do not propagate */
-				ignore_acpi_ev = 1;
-				break;
-			default:
-				unk_ev = 1;
-			}
+			known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
 			break;
 		case 7:
 			/* 0x7000-0x7FFF: misc */
 			if (tp_features.hotkey_wlsw && hkey == 0x7000) {
 				tpacpi_send_radiosw_update();
 				send_acpi_ev = 0;
+				known_ev = true;
 				break;
 			}
 			/* fallthrough to default */
 		default:
-			unk_ev = 1;
+			known_ev = false;
 		}
-		if (unk_ev) {
+		if (!known_ev) {
 			printk(TPACPI_NOTICE
 			       "unhandled HKEY event 0x%04x\n", hkey);
 		}
-- 
cgit v1.1


From 106b4e6657e10831f35c32afa26d9c11e6312783 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:06 -0200
Subject: ACPI: thinkpad-acpi: handle HKEY thermal and battery alarms

Handle some HKEY events that are actually firmware alarms.  For
now, we do the simple thing: log specific messages to the log and let
the thinkpad-specific event pass to userspace.

In the future, these events will be migrated to generic notifications
and subsystems.

These alarms are NOT available on all ThinkPads.  E.g. the T43 only
issues 0x6011 and 0x6012.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 63 +++++++++++++++++++++++++++++++++---
 1 file changed, 59 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index d833ee6..c4e4b64 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -174,10 +174,12 @@ enum {
 
 /* Debugging */
 #define TPACPI_LOG TPACPI_FILE ": "
-#define TPACPI_ERR	   KERN_ERR    TPACPI_LOG
-#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
-#define TPACPI_INFO   KERN_INFO   TPACPI_LOG
-#define TPACPI_DEBUG  KERN_DEBUG  TPACPI_LOG
+#define TPACPI_ALERT	KERN_ALERT  TPACPI_LOG
+#define TPACPI_CRIT	KERN_CRIT   TPACPI_LOG
+#define TPACPI_ERR	KERN_ERR    TPACPI_LOG
+#define TPACPI_NOTICE	KERN_NOTICE TPACPI_LOG
+#define TPACPI_INFO	KERN_INFO   TPACPI_LOG
+#define TPACPI_DEBUG	KERN_DEBUG  TPACPI_LOG
 
 #define TPACPI_DBG_ALL		0xffff
 #define TPACPI_DBG_INIT		0x0001
@@ -2614,6 +2616,15 @@ static bool hotkey_notify_wakeup(const u32 hkey,
 		*ignore_acpi_ev = true;
 		break;
 
+	case 0x2313: /* Battery on critical low level (S3) */
+	case 0x2413: /* Battery on critical low level (S4) */
+		printk(TPACPI_ALERT
+			"EMERGENCY WAKEUP: battery almost empty\n");
+		/* how to auto-heal: */
+		/* 2313: woke up from S3, go to S4/S5 */
+		/* 2413: woke up from S4, go to S5 */
+		break;
+
 	default:
 		return false;
 	}
@@ -2659,6 +2670,45 @@ static bool hotkey_notify_usrevent(const u32 hkey,
 	}
 }
 
+static bool hotkey_notify_thermal(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x6000-0x6FFF: thermal alarms */
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	switch (hkey) {
+	case 0x6011:
+		printk(TPACPI_CRIT
+			"THERMAL ALARM: battery is too hot!\n");
+		/* recommended action: warn user through gui */
+		return true;
+	case 0x6012:
+		printk(TPACPI_ALERT
+			"THERMAL EMERGENCY: battery is extremely hot!\n");
+		/* recommended action: immediate sleep/hibernate */
+		return true;
+	case 0x6021:
+		printk(TPACPI_CRIT
+			"THERMAL ALARM: "
+			"a sensor reports something is too hot!\n");
+		/* recommended action: warn user through gui, that */
+		/* some internal component is too hot */
+		return true;
+	case 0x6022:
+		printk(TPACPI_ALERT
+			"THERMAL EMERGENCY: "
+			"a sensor reports something is extremely hot!\n");
+		/* recommended action: immediate sleep/hibernate */
+		return true;
+	default:
+		printk(TPACPI_ALERT
+			 "THERMAL ALERT: unknown thermal alarm received\n");
+		return false;
+	}
+}
+
 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 {
 	u32 hkey;
@@ -2731,6 +2781,11 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 			known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
 						 &ignore_acpi_ev);
 			break;
+		case 6:
+			/* 0x6000-0x6FFF: thermal alarms */
+			known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
+			break;
 		case 7:
 			/* 0x7000-0x7FFF: misc */
 			if (tp_features.hotkey_wlsw && hkey == 0x7000) {
-- 
cgit v1.1


From cb4293589855714b6d5079336019bf2af5fc41f8 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:07 -0200
Subject: ACPI: thinkpad-acpi: start the event hunt season

Ask users to tell us about any unhandled events they find.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index c4e4b64..d7d41ae 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2801,6 +2801,9 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 		if (!known_ev) {
 			printk(TPACPI_NOTICE
 			       "unhandled HKEY event 0x%04x\n", hkey);
+			printk(TPACPI_NOTICE
+			       "please report the conditions when this "
+			       "event happened to %s\n", TPACPI_MAIL);
 		}
 
 		/* Legacy events */
-- 
cgit v1.1


From 1c2ece758a36b48133717e4db060fbe8fa52c5cd Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:08 -0200
Subject: ACPI: thinkpad-acpi: clean-up fan subdriver quirk

Better document the Unitialized HFSP quirk, and modularize it a bit.
This makes the code flow easier to read and reduces LOC.

Apply the Unitialized HFSP closer to the source (i.e. inside the
get_fan_status()), this fixes a harmless buglet where at driver init
with the quirk active, the user could set the hwmon pwm1 attribute and
switch out of pwm1_mode=2 to pwm1_mode=0 without changing pwm1_mode
directly.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Tino Keitel <tino.keitel@tikei.de>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 109 +++++++++++++++++++----------------
 1 file changed, 58 insertions(+), 51 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index d7d41ae..213219d 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -5897,6 +5897,60 @@ TPACPI_HANDLE(sfan, ec, "SFAN",	/* 570 */
 	   );			/* all others */
 
 /*
+ * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
+ * HFSP register at boot, so it contains 0x07 but the Thinkpad could
+ * be in auto mode (0x80).
+ *
+ * This is corrected by any write to HFSP either by the driver, or
+ * by the firmware.
+ *
+ * We assume 0x07 really means auto mode while this quirk is active,
+ * as this is far more likely than the ThinkPad being in level 7,
+ * which is only used by the firmware during thermal emergencies.
+ */
+
+static void fan_quirk1_detect(void)
+{
+	/* In some ThinkPads, neither the EC nor the ACPI
+	 * DSDT initialize the HFSP register, and it ends up
+	 * being initially 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) {
+		switch (thinkpad_id.ec_model) {
+		case 0x5931: /* TP-1Y */
+		case 0x3837: /* TP-78 */
+		case 0x3637: /* TP-76 */
+		case 0x3037: /* TP-70 */
+			printk(TPACPI_NOTICE
+			       "fan_init: initial fan status is unknown, "
+			       "assuming it is in auto mode\n");
+			tp_features.fan_ctrl_status_undef = 1;
+			;;
+		}
+	}
+}
+
+static void fan_quirk1_handle(u8 *fan_status)
+{
+	if (unlikely(tp_features.fan_ctrl_status_undef)) {
+		if (*fan_status != fan_control_initial_status) {
+			/* something changed the HFSP regisnter since
+			 * driver init time, so it is not undefined
+			 * anymore */
+			tp_features.fan_ctrl_status_undef = 0;
+		} else {
+			/* Return most likely status. In fact, it
+			 * might be the only possible status */
+			*fan_status = TP_EC_FAN_AUTO;
+		}
+	}
+}
+
+/*
  * Call with fan_mutex held
  */
 static void fan_update_desired_level(u8 status)
@@ -5934,8 +5988,10 @@ static int fan_get_status(u8 *status)
 		if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
 			return -EIO;
 
-		if (likely(status))
+		if (likely(status)) {
 			*status = s;
+			fan_quirk1_handle(status);
+		}
 
 		break;
 
@@ -6245,16 +6301,6 @@ static ssize_t fan_pwm1_enable_show(struct device *dev,
 	if (res)
 		return res;
 
-	if (unlikely(tp_features.fan_ctrl_status_undef)) {
-		if (status != fan_control_initial_status) {
-			tp_features.fan_ctrl_status_undef = 0;
-		} else {
-			/* Return most likely status. In fact, it
-			 * might be the only possible status */
-			status = TP_EC_FAN_AUTO;
-		}
-	}
-
 	if (status & TP_EC_FAN_FULLSPEED) {
 		mode = 0;
 	} else if (status & TP_EC_FAN_AUTO) {
@@ -6319,14 +6365,6 @@ static ssize_t fan_pwm1_show(struct device *dev,
 	if (res)
 		return res;
 
-	if (unlikely(tp_features.fan_ctrl_status_undef)) {
-		if (status != fan_control_initial_status) {
-			tp_features.fan_ctrl_status_undef = 0;
-		} else {
-			status = TP_EC_FAN_AUTO;
-		}
-	}
-
 	if ((status &
 	     (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
 		status = fan_control_desired_level;
@@ -6458,29 +6496,7 @@ static int __init fan_init(struct ibm_init_struct *iibm)
 		if (likely(acpi_ec_read(fan_status_offset,
 					&fan_control_initial_status))) {
 			fan_status_access_mode = TPACPI_FAN_RD_TPEC;
-
-			/* In some ThinkPads, neither the EC nor the ACPI
-			 * DSDT initialize the fan status, and it ends up
-			 * being set to 0x07 when it *could* be either
-			 * 0x07 or 0x80.
-			 *
-			 * Enable for TP-1Y (T43), TP-78 (R51e),
-			 * TP-76 (R52), TP-70 (T43, R52), which are known
-			 * to be buggy. */
-			if (fan_control_initial_status == 0x07) {
-				switch (thinkpad_id.ec_model) {
-				case 0x5931: /* TP-1Y */
-				case 0x3837: /* TP-78 */
-				case 0x3637: /* TP-76 */
-				case 0x3037: /* TP-70 */
-					printk(TPACPI_NOTICE
-					       "fan_init: initial fan status "
-					       "is unknown, assuming it is "
-					       "in auto mode\n");
-					tp_features.fan_ctrl_status_undef = 1;
-					;;
-				}
-			}
+			fan_quirk1_detect();
 		} else {
 			printk(TPACPI_ERR
 			       "ThinkPad ACPI EC access misbehaving, "
@@ -6669,15 +6685,6 @@ static int fan_read(char *p)
 		if (rc < 0)
 			return rc;
 
-		if (unlikely(tp_features.fan_ctrl_status_undef)) {
-			if (status != fan_control_initial_status)
-				tp_features.fan_ctrl_status_undef = 0;
-			else
-				/* Return most likely status. In fact, it
-				 * might be the only possible status */
-				status = TP_EC_FAN_AUTO;
-		}
-
 		len += sprintf(p + len, "status:\t\t%s\n",
 			       (status != 0) ? "enabled" : "disabled");
 
-- 
cgit v1.1


From 54926ce8d2db7ebcbc4b80aae2cec571cd793e46 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:09 -0200
Subject: ACPI: thinkpad-acpi: handle HKEY event 6030

HKEY event 0x6030 is a helper for Lenovo's Advanced Thermal Management
Windows driver, which is, of course, completely undocumented.

Silence any warnings about it being an unknown alarm, and report it
unmodified for userspace.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 213219d..886a430 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2702,6 +2702,12 @@ static bool hotkey_notify_thermal(const u32 hkey,
 			"a sensor reports something is extremely hot!\n");
 		/* recommended action: immediate sleep/hibernate */
 		return true;
+	case 0x6030:
+		printk(TPACPI_INFO
+			"EC reports that Thermal Table has changed\n");
+		/* recommended action: do nothing, we don't have
+		 * Lenovo ATM information */
+		return true;
 	default:
 		printk(TPACPI_ALERT
 			 "THERMAL ALERT: unknown thermal alarm received\n");
-- 
cgit v1.1


From aa2fbcec07b0d594808bc3058692395d24eba66e Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 11 Jan 2009 03:01:10 -0200
Subject: ACPI: thinkpad-acpi: bump up version to 0.22

It is about time to bump up the version.

Features added since 0.21:  fan suspend/resume support, preserve radio
state across power off (for some radio types), built-in UWB radio
rfkill support and thermal alarm events support.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 Documentation/laptops/thinkpad-acpi.txt | 6 +++---
 drivers/platform/x86/thinkpad_acpi.c    | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 91c0001..41bc99f 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -1,7 +1,7 @@
 		     ThinkPad ACPI Extras Driver
 
-                            Version 0.21
-                           May 29th, 2008
+                            Version 0.22
+                        November 23rd,  2008
 
                Borislav Deianov <borislav@users.sf.net>
              Henrique de Moraes Holschuh <hmh@hmh.eng.br>
@@ -17,7 +17,7 @@ This driver used to be named ibm-acpi until kernel 2.6.21 and release
 0.13-20070314.  It used to be in the drivers/acpi tree, but it was
 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
 2.6.22, and release 0.14.  It was moved to drivers/platform/x86 for
-kernel 2.6.29.
+kernel 2.6.29 and release 0.22.
 
 The driver is named "thinkpad-acpi".  In some places, like module
 names, "thinkpad_acpi" is used because of userspace issues.
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 886a430..bcbc051 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -21,7 +21,7 @@
  *  02110-1301, USA.
  */
 
-#define TPACPI_VERSION "0.21"
+#define TPACPI_VERSION "0.22"
 #define TPACPI_SYSFS_VERSION 0x020200
 
 /*
-- 
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