Merge branch 'for_linus' of...

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (88 commits)
  ips driver: make it less chatty
  intel_scu_ipc: fix size field for intel_scu_ipc_command
  intel_scu_ipc: return -EIO for error condition in busy_loop
  intel_scu_ipc: fix data packing of PMIC command on Moorestown
  Clean up command packing on MRST.
  zero the stack buffer before giving random garbage to the SCU
  Fix stack buffer size for IPC writev messages
  intel_scu_ipc: Use the new cpu identification function
  intel_scu_ipc: tidy up unused bits
  Remove indirect read write api support.
  intel_scu_ipc: Support Medfield processors
  intel_scu_ipc: detect CPU type automatically
  x86 plat: limit x86 platform driver menu to X86
  acpi ec_sys: Be more cautious about ec write access
  acpi ec: Fix possible double io port registration
  hp-wmi: acpi_drivers.h is already included through acpi.h two lines below
  hp-wmi: Fix mixing up of and/or directive
  dell-laptop: make dell_laptop_i8042_filter() static
  asus-laptop: fix asus_input_init error path
  msi-wmi: make needlessly global symbols static
  ...

Documentation/ABI/testing/debugfs-ec

+What:		/sys/kernel/debug/ec/*/{gpe,use_global_lock,io}
+Date:		July 2010
+Contact:	Thomas Renninger <trenn@suse.de>
+Description:
+
+General information like which GPE is assigned to the EC and whether
+the global lock should get used.
+Knowing the EC GPE one can watch the amount of HW events related to
+the EC here (XY -> GPE number from /sys/kernel/debug/ec/*/gpe):
+/sys/firmware/acpi/interrupts/gpeXY
+
+The io file is binary and a userspace tool located here:
+ftp://ftp.suse.com/pub/people/trenn/sources/ec/
+should get used to read out the 256 Embedded Controller registers
+or writing to them.
+
+CAUTION: Do not write to the Embedded Controller if you don't know
+what you are doing! Rebooting afterwards also is a good idea.
+This can influence the way your machine is cooled and fans may
+not get switched on again after you did a wrong write.

Documentation/laptops/thinkpad-acpi.txt

@@ -960,70 +960,21 @@ Sysfs notes:
 	subsystem, and follow all of the hwmon guidelines at
 	Documentation/hwmon.
 
+EXPERIMENTAL: Embedded controller register dump
+-----------------------------------------------
 
-EXPERIMENTAL: Embedded controller register dump -- /proc/acpi/ibm/ecdump
-------------------------------------------------------------------------
-
-This feature is marked EXPERIMENTAL because the implementation
-directly accesses hardware registers and may not work as expected. USE
-WITH CAUTION! To use this feature, you need to supply the
-experimental=1 parameter when loading the module.
-
-This feature dumps the values of 256 embedded controller
-registers. Values which have changed since the last time the registers
-were dumped are marked with a star:
-
-[root@x40 ibm-acpi]# cat /proc/acpi/ibm/ecdump
-EC       +00 +01 +02 +03 +04 +05 +06 +07 +08 +09 +0a +0b +0c +0d +0e +0f
-EC 0x00:  a7  47  87  01  fe  96  00  08  01  00  cb  00  00  00  40  00
-EC 0x10:  00  00  ff  ff  f4  3c  87  09  01  ff  42  01  ff  ff  0d  00
-EC 0x20:  00  00  00  00  00  00  00  00  00  00  00  03  43  00  00  80
-EC 0x30:  01  07  1a  00  30  04  00  00 *85  00  00  10  00  50  00  00
-EC 0x40:  00  00  00  00  00  00  14  01  00  04  00  00  00  00  00  00
-EC 0x50:  00  c0  02  0d  00  01  01  02  02  03  03  03  03 *bc *02 *bc
-EC 0x60: *02 *bc *02  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0x70:  00  00  00  00  00  12  30  40 *24 *26 *2c *27 *20  80 *1f  80
-EC 0x80:  00  00  00  06 *37 *0e  03  00  00  00  0e  07  00  00  00  00
-EC 0x90:  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xa0: *ff  09  ff  09  ff  ff *64  00 *00 *00 *a2  41 *ff *ff *e0  00
-EC 0xb0:  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xc0:  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xd0:  03  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xe0:  00  00  00  00  00  00  00  00  11  20  49  04  24  06  55  03
-EC 0xf0:  31  55  48  54  35  38  57  57  08  2f  45  73  07  65  6c  1a
-
-This feature can be used to determine the register holding the fan
-speed on some models. To do that, do the following:
+This feature is not included in the thinkpad driver anymore.
+Instead the EC can be accessed through /sys/kernel/debug/ec with
+a userspace tool which can be found here:
+ftp://ftp.suse.com/pub/people/trenn/sources/ec
 
+Use it to determine the register holding the fan
+speed on some models. To do that, do the following:
 	- make sure the battery is fully charged
 	- make sure the fan is running
-	- run 'cat /proc/acpi/ibm/ecdump' several times, once per second or so
-
-The first step makes sure various charging-related values don't
-vary. The second ensures that the fan-related values do vary, since
-the fan speed fluctuates a bit. The third will (hopefully) mark the
-fan register with a star:
-
-[root@x40 ibm-acpi]# cat /proc/acpi/ibm/ecdump
-EC       +00 +01 +02 +03 +04 +05 +06 +07 +08 +09 +0a +0b +0c +0d +0e +0f
-EC 0x00:  a7  47  87  01  fe  96  00  08  01  00  cb  00  00  00  40  00
-EC 0x10:  00  00  ff  ff  f4  3c  87  09  01  ff  42  01  ff  ff  0d  00
-EC 0x20:  00  00  00  00  00  00  00  00  00  00  00  03  43  00  00  80
-EC 0x30:  01  07  1a  00  30  04  00  00  85  00  00  10  00  50  00  00
-EC 0x40:  00  00  00  00  00  00  14  01  00  04  00  00  00  00  00  00
-EC 0x50:  00  c0  02  0d  00  01  01  02  02  03  03  03  03  bc  02  bc
-EC 0x60:  02  bc  02  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0x70:  00  00  00  00  00  12  30  40  24  27  2c  27  21  80  1f  80
-EC 0x80:  00  00  00  06 *be  0d  03  00  00  00  0e  07  00  00  00  00
-EC 0x90:  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xa0:  ff  09  ff  09  ff  ff  64  00  00  00  a2  41  ff  ff  e0  00
-EC 0xb0:  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xc0:  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xd0:  03  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
-EC 0xe0:  00  00  00  00  00  00  00  00  11  20  49  04  24  06  55  03
-EC 0xf0:  31  55  48  54  35  38  57  57  08  2f  45  73  07  65  6c  1a
-
-Another set of values that varies often is the temperature
+	- use above mentioned tool to read out the EC
+
+Often fan and temperature values vary between
 readings. Since temperatures don't change vary fast, you can take
 several quick dumps to eliminate them.
 

arch/x86/include/asm/intel_scu_ipc.h

 #ifndef _ASM_X86_INTEL_SCU_IPC_H_
 #define  _ASM_X86_INTEL_SCU_IPC_H_
 
+#define IPCMSG_VRTC	0xFA	 /* Set vRTC device */
+
+/* Command id associated with message IPCMSG_VRTC */
+#define IPC_CMD_VRTC_SETTIME      1 /* Set time */
+#define IPC_CMD_VRTC_SETALARM     2 /* Set alarm */
+
 /* Read single register */
 int intel_scu_ipc_ioread8(u16 addr, u8 *data);
 
@@ -28,20 +34,6 @@ int intel_scu_ipc_writev(u16 *addr, u8 *data, int len);
 /* Update single register based on the mask */
 int intel_scu_ipc_update_register(u16 addr, u8 data, u8 mask);
 
-/*
- * Indirect register read
- * Can be used when SCCB(System Controller Configuration Block) register
- * HRIM(Honor Restricted IPC Messages) is set (bit 23)
- */
-int intel_scu_ipc_register_read(u32 addr, u32 *data);
-
-/*
- * Indirect register write
- * Can be used when SCCB(System Controller Configuration Block) register
- * HRIM(Honor Restricted IPC Messages) is set (bit 23)
- */
-int intel_scu_ipc_register_write(u32 addr, u32 data);
-
 /* Issue commands to the SCU with or without data */
 int intel_scu_ipc_simple_command(int cmd, int sub);
 int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,

drivers/acpi/Kconfig

@@ -104,6 +104,24 @@ config ACPI_SYSFS_POWER
 	help
 	  Say N to disable power /sys interface
 
+config ACPI_EC_DEBUGFS
+	tristate "EC read/write access through /sys/kernel/debug/ec"
+	default n
+	help
+	  Say N to disable Embedded Controller /sys/kernel/debug interface
+
+	  Be aware that using this interface can confuse your Embedded
+	  Controller in a way that a normal reboot is not enough. You then
+	  have to power of your system, and remove the laptop battery for
+	  some seconds.
+	  An Embedded Controller typically is available on laptops and reads
+	  sensor values like battery state and temperature.
+	  The kernel accesses the EC through ACPI parsed code provided by BIOS
+	  tables. This option allows to access the EC directly without ACPI
+	  code being involved.
+	  Thus this option is a debug option that helps to write ACPI drivers
+	  and can be used to identify ACPI code or EC firmware bugs.
+
 config ACPI_PROC_EVENT
 	bool "Deprecated /proc/acpi/event support"
 	depends on PROC_FS

drivers/acpi/Makefile

@@ -60,6 +60,7 @@ obj-$(CONFIG_ACPI_SBS)		+= sbshc.o
 obj-$(CONFIG_ACPI_SBS)		+= sbs.o
 obj-$(CONFIG_ACPI_POWER_METER)	+= power_meter.o
 obj-$(CONFIG_ACPI_HED)		+= hed.o
+obj-$(CONFIG_ACPI_EC_DEBUGFS)	+= ec_sys.o
 
 # processor has its own "processor." module_param namespace
 processor-y			:= processor_driver.o processor_throttling.o

drivers/acpi/ec.c

@@ -34,8 +34,6 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/delay.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
@@ -45,10 +43,13 @@
 #include <acpi/acpi_drivers.h>
 #include <linux/dmi.h>
 
+#include "internal.h"
+
 #define ACPI_EC_CLASS			"embedded_controller"
 #define ACPI_EC_DEVICE_NAME		"Embedded Controller"
 #define ACPI_EC_FILE_INFO		"info"
 
+#undef PREFIX
 #define PREFIX				"ACPI: EC: "
 
 /* EC status register */
@@ -106,19 +107,8 @@ struct transaction {
 	bool done;
 };
 
-static struct acpi_ec {
-	acpi_handle handle;
-	unsigned long gpe;
-	unsigned long command_addr;
-	unsigned long data_addr;
-	unsigned long global_lock;
-	unsigned long flags;
-	struct mutex lock;
-	wait_queue_head_t wait;
-	struct list_head list;
-	struct transaction *curr;
-	spinlock_t curr_lock;
-} *boot_ec, *first_ec;
+struct acpi_ec *boot_ec, *first_ec;
+EXPORT_SYMBOL(first_ec);
 
 static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */
 static int EC_FLAGS_VALIDATE_ECDT; /* ASUStec ECDTs need to be validated */
@@ -678,72 +668,6 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 	}
 }
 
-/* --------------------------------------------------------------------------
-                              FS Interface (/proc)
-   -------------------------------------------------------------------------- */
-
-static struct proc_dir_entry *acpi_ec_dir;
-
-static int acpi_ec_read_info(struct seq_file *seq, void *offset)
-{
-	struct acpi_ec *ec = seq->private;
-
-	if (!ec)
-		goto end;
-
-	seq_printf(seq, "gpe:\t\t\t0x%02x\n", (u32) ec->gpe);
-	seq_printf(seq, "ports:\t\t\t0x%02x, 0x%02x\n",
-		   (unsigned)ec->command_addr, (unsigned)ec->data_addr);
-	seq_printf(seq, "use global lock:\t%s\n",
-		   ec->global_lock ? "yes" : "no");
-      end:
-	return 0;
-}
-
-static int acpi_ec_info_open_fs(struct inode *inode, struct file *file)
-{
-	return single_open(file, acpi_ec_read_info, PDE(inode)->data);
-}
-
-static const struct file_operations acpi_ec_info_ops = {
-	.open = acpi_ec_info_open_fs,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-	.owner = THIS_MODULE,
-};
-
-static int acpi_ec_add_fs(struct acpi_device *device)
-{
-	struct proc_dir_entry *entry = NULL;
-
-	if (!acpi_device_dir(device)) {
-		acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
-						     acpi_ec_dir);
-		if (!acpi_device_dir(device))
-			return -ENODEV;
-	}
-
-	entry = proc_create_data(ACPI_EC_FILE_INFO, S_IRUGO,
-				 acpi_device_dir(device),
-				 &acpi_ec_info_ops, acpi_driver_data(device));
-	if (!entry)
-		return -ENODEV;
-	return 0;
-}
-
-static int acpi_ec_remove_fs(struct acpi_device *device)
-{
-
-	if (acpi_device_dir(device)) {
-		remove_proc_entry(ACPI_EC_FILE_INFO, acpi_device_dir(device));
-		remove_proc_entry(acpi_device_bid(device), acpi_ec_dir);
-		acpi_device_dir(device) = NULL;
-	}
-
-	return 0;
-}
-
 /* --------------------------------------------------------------------------
                                Driver Interface
    -------------------------------------------------------------------------- */
@@ -894,7 +818,12 @@ static int acpi_ec_add(struct acpi_device *device)
 	if (!first_ec)
 		first_ec = ec;
 	device->driver_data = ec;
-	acpi_ec_add_fs(device);
+
+	WARN(!request_region(ec->data_addr, 1, "EC data"),
+	     "Could not request EC data io port 0x%lx", ec->data_addr);
+	WARN(!request_region(ec->command_addr, 1, "EC cmd"),
+	     "Could not request EC cmd io port 0x%lx", ec->command_addr);
+
 	pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n",
 			  ec->gpe, ec->command_addr, ec->data_addr);
 
@@ -921,7 +850,8 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
 		kfree(handler);
 	}
 	mutex_unlock(&ec->lock);
-	acpi_ec_remove_fs(device);
+	release_region(ec->data_addr, 1);
+	release_region(ec->command_addr, 1);
 	device->driver_data = NULL;
 	if (ec == first_ec)
 		first_ec = NULL;
@@ -1120,16 +1050,10 @@ int __init acpi_ec_init(void)
 {
 	int result = 0;
 
-	acpi_ec_dir = proc_mkdir(ACPI_EC_CLASS, acpi_root_dir);
-	if (!acpi_ec_dir)
-		return -ENODEV;
-
 	/* Now register the driver for the EC */
 	result = acpi_bus_register_driver(&acpi_ec_driver);
-	if (result < 0) {
-		remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
+	if (result < 0)
 		return -ENODEV;
-	}
 
 	return result;
 }
@@ -1140,9 +1064,6 @@ static void __exit acpi_ec_exit(void)
 {
 
 	acpi_bus_unregister_driver(&acpi_ec_driver);
-
-	remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
-
 	return;
 }
 #endif	/* 0 */

drivers/acpi/ec_sys.c

+/*
+ * ec_sys.c
+ *
+ * Copyright (C) 2010 SUSE Products GmbH/Novell
+ * Author:
+ *      Thomas Renninger <trenn@suse.de>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/debugfs.h>
+#include "internal.h"
+
+MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
+MODULE_DESCRIPTION("ACPI EC sysfs access driver");
+MODULE_LICENSE("GPL");
+
+static bool write_support;
+module_param(write_support, bool, 0644);
+MODULE_PARM_DESC(write_support, "Dangerous, reboot and removal of battery may "
+		 "be needed.");
+
+#define EC_SPACE_SIZE 256
+
+struct sysdev_class acpi_ec_sysdev_class = {
+	.name = "ec",
+};
+
+static struct dentry *acpi_ec_debugfs_dir;
+
+static int acpi_ec_open_io(struct inode *i, struct file *f)
+{
+	f->private_data = i->i_private;
+	return 0;
+}
+
+static ssize_t acpi_ec_read_io(struct file *f, char __user *buf,
+			       size_t count, loff_t *off)
+{
+	/* Use this if support reading/writing multiple ECs exists in ec.c:
+	 * struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private;
+	 */
+	unsigned int size = EC_SPACE_SIZE;
+	u8 *data = (u8 *) buf;
+	loff_t init_off = *off;
+	int err = 0;
+
+	if (*off >= size)
+		return 0;
+	if (*off + count >= size) {
+		size -= *off;
+		count = size;
+	} else
+		size = count;
+
+	while (size) {
+		err = ec_read(*off, &data[*off - init_off]);
+		if (err)
+			return err;
+		*off += 1;
+		size--;
+	}
+	return count;
+}
+
+static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf,
+				size_t count, loff_t *off)
+{
+	/* Use this if support reading/writing multiple ECs exists in ec.c:
+	 * struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private;
+	 */
+
+	unsigned int size = count;
+	loff_t init_off = *off;
+	u8 *data = (u8 *) buf;
+	int err = 0;
+
+	if (*off >= EC_SPACE_SIZE)
+		return 0;
+	if (*off + count >= EC_SPACE_SIZE) {
+		size = EC_SPACE_SIZE - *off;
+		count = size;
+	}
+
+	while (size) {
+		u8 byte_write = data[*off - init_off];
+		err = ec_write(*off, byte_write);
+		if (err)
+			return err;
+
+		*off += 1;
+		size--;
+	}
+	return count;
+}
+
+static struct file_operations acpi_ec_io_ops = {
+	.owner = THIS_MODULE,
+	.open  = acpi_ec_open_io,
+	.read  = acpi_ec_read_io,
+	.write = acpi_ec_write_io,
+};
+
+int acpi_ec_add_debugfs(struct acpi_ec *ec, unsigned int ec_device_count)
+{
+	struct dentry *dev_dir;
+	char name[64];
+	mode_t mode = 0400;
+
+	if (ec_device_count == 0) {
+		acpi_ec_debugfs_dir = debugfs_create_dir("ec", NULL);
+		if (!acpi_ec_debugfs_dir)
+			return -ENOMEM;
+	}
+
+	sprintf(name, "ec%u", ec_device_count);
+	dev_dir = debugfs_create_dir(name, acpi_ec_debugfs_dir);
+	if (!dev_dir) {
+		if (ec_device_count != 0)
+			goto error;
+		return -ENOMEM;
+	}
+
+	if (!debugfs_create_x32("gpe", 0444, dev_dir, (u32 *)&first_ec->gpe))
+		goto error;
+	if (!debugfs_create_bool("use_global_lock", 0444, dev_dir,
+				 (u32 *)&first_ec->global_lock))
+		goto error;
+
+	if (write_support)
+		mode = 0600;
+	if (!debugfs_create_file("io", mode, dev_dir, ec, &acpi_ec_io_ops))
+		goto error;
+
+	return 0;
+
+error:
+	debugfs_remove_recursive(acpi_ec_debugfs_dir);
+	return -ENOMEM;
+}
+
+static int __init acpi_ec_sys_init(void)
+{
+	int err = 0;
+	if (first_ec)
+		err = acpi_ec_add_debugfs(first_ec, 0);
+	else
+		err = -ENODEV;
+	return err;
+}
+
+static void __exit acpi_ec_sys_exit(void)
+{
+	debugfs_remove_recursive(acpi_ec_debugfs_dir);
+}
+
+module_init(acpi_ec_sys_init);
+module_exit(acpi_ec_sys_exit);

drivers/acpi/internal.h

@@ -18,6 +18,11 @@
  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#ifndef _ACPI_INTERNAL_H_
+#define _ACPI_INTERNAL_H_
+
+#include <linux/sysdev.h>
+
 #define PREFIX "ACPI: "
 
 int init_acpi_device_notify(void);
@@ -46,6 +51,23 @@ void acpi_early_processor_set_pdc(void);
 /* --------------------------------------------------------------------------
                                   Embedded Controller
    -------------------------------------------------------------------------- */
+struct acpi_ec {
+	acpi_handle handle;
+	unsigned long gpe;
+	unsigned long command_addr;
+	unsigned long data_addr;
+	unsigned long global_lock;
+	unsigned long flags;
+	struct mutex lock;
+	wait_queue_head_t wait;
+	struct list_head list;
+	struct transaction *curr;
+	spinlock_t curr_lock;
+	struct sys_device sysdev;
+};
+
+extern struct acpi_ec *first_ec;
+
 int acpi_ec_init(void);
 int acpi_ec_ecdt_probe(void);
 int acpi_boot_ec_enable(void);
@@ -63,3 +85,5 @@ int acpi_sleep_proc_init(void);
 #else
 static inline int acpi_sleep_proc_init(void) { return 0; }
 #endif
+
+#endif /* _ACPI_INTERNAL_H_ */

drivers/platform/x86/Kconfig

@@ -5,6 +5,7 @@
 menuconfig X86_PLATFORM_DEVICES
 	bool "X86 Platform Specific Device Drivers"
 	default y
+	depends on X86
 	---help---
 	  Say Y here to get to see options for device drivers for various
 	  x86 platforms, including vendor-specific laptop extension drivers.
@@ -151,6 +152,7 @@ config MSI_LAPTOP
 	depends on ACPI
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on RFKILL
+	depends on SERIO_I8042
 	---help---
 	  This is a driver for laptops built by MSI (MICRO-STAR
 	  INTERNATIONAL):
@@ -181,6 +183,8 @@ config COMPAL_LAPTOP
 	depends on ACPI
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on RFKILL
+	depends on HWMON
+	depends on POWER_SUPPLY
 	---help---
 	  This is a driver for laptops built by Compal:
 
@@ -520,6 +524,7 @@ config TOSHIBA_BT_RFKILL
 config ACPI_CMPC
 	tristate "CMPC Laptop Extras"
 	depends on X86 && ACPI
+	depends on RFKILL || RFKILL=n
 	select INPUT
 	select BACKLIGHT_CLASS_DEVICE
 	default n
@@ -537,4 +542,43 @@ config INTEL_SCU_IPC
 	  some embedded Intel x86 platforms. This is not needed for PC-type
 	  machines.
 
+config GPIO_INTEL_PMIC
+	bool "Intel PMIC GPIO support"
+	depends on INTEL_SCU_IPC && GPIOLIB
+	---help---
+	  Say Y here to support GPIO via the SCU IPC interface
+	  on Intel MID platforms.
+
+config RAR_REGISTER
+	bool "Restricted Access Region Register Driver"
+	depends on PCI && X86_MRST
+	default n
+	---help---
+	  This driver allows other kernel drivers access to the
+	  contents of the restricted access region control registers.
+
+	  The restricted access region control registers
+	  (rar_registers) are used to pass address and
+	  locking information on restricted access regions
+	  to other drivers that use restricted access regions.
+
+	  The restricted access regions are regions of memory
+	  on the Intel MID Platform that are not accessible to
+	  the x86 processor, but are accessible to dedicated
+	  processors on board peripheral devices.
+
+	  The purpose of the restricted access regions is to
+	  protect sensitive data from compromise by unauthorized
+	  programs running on the x86 processor.
+
+config INTEL_IPS
+	tristate "Intel Intelligent Power Sharing"
+	depends on ACPI
+	---help---
+	  Intel Calpella platforms support dynamic power sharing between the
+	  CPU and GPU, maximizing performance in a given TDP.  This driver,
+	  along with the CPU frequency and i915 drivers, provides that
+	  functionality.  If in doubt, say Y here; it will only load on
+	  supported platforms.
+
 endif # X86_PLATFORM_DEVICES

drivers/platform/x86/Makefile

@@ -26,3 +26,7 @@ obj-$(CONFIG_TOPSTAR_LAPTOP)	+= topstar-laptop.o
 obj-$(CONFIG_ACPI_TOSHIBA)	+= toshiba_acpi.o
 obj-$(CONFIG_TOSHIBA_BT_RFKILL)	+= toshiba_bluetooth.o
 obj-$(CONFIG_INTEL_SCU_IPC)	+= intel_scu_ipc.o
+obj-$(CONFIG_RAR_REGISTER)	+= intel_rar_register.o
+obj-$(CONFIG_INTEL_IPS)		+= intel_ips.o
+obj-$(CONFIG_GPIO_INTEL_PMIC)	+= intel_pmic_gpio.o
+

drivers/platform/x86/acer-wmi.c

@@ -49,17 +49,6 @@ MODULE_LICENSE("GPL");
 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
 
-/*
- * The following defines quirks to get some specific functions to work
- * which are known to not be supported over ACPI-WMI (such as the mail LED
- * on WMID based Acer's)
- */
-struct acer_quirks {
-	const char *vendor;
-	const char *model;
-	u16 quirks;
-};
-
 /*
  * Magic Number
  * Meaning is unknown - this number is required for writing to ACPI for AMW0
@@ -200,7 +189,7 @@ static void set_quirks(void)
 static int dmi_matched(const struct dmi_system_id *dmi)
 {
 	quirks = dmi->driver_data;
-	return 0;
+	return 1;
 }
 
 static struct quirk_entry quirk_unknown = {
@@ -555,6 +544,7 @@ static acpi_status AMW0_find_mailled(void)
 	obj->buffer.length == sizeof(struct wmab_ret)) {
 		ret = *((struct wmab_ret *) obj->buffer.pointer);
 	} else {
+		kfree(out.pointer);
 		return AE_ERROR;
 	}
 
@@ -570,7 +560,7 @@ static acpi_status AMW0_set_capabilities(void)
 {
 	struct wmab_args args;
 	struct wmab_ret ret;
-	acpi_status status = AE_OK;
+	acpi_status status;
 	struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 	union acpi_object *obj;
 
@@ -593,12 +583,13 @@ static acpi_status AMW0_set_capabilities(void)
 	if (ACPI_FAILURE(status))
 		return status;
 
-	obj = (union acpi_object *) out.pointer;
+	obj = out.pointer;
 	if (obj && obj->type == ACPI_TYPE_BUFFER &&
 	obj->buffer.length == sizeof(struct wmab_ret)) {
 		ret = *((struct wmab_ret *) obj->buffer.pointer);
 	} else {
-		return AE_ERROR;
+		status = AE_ERROR;
+		goto out;
 	}
 
 	if (ret.eax & 0x1)
@@ -607,23 +598,26 @@ static acpi_status AMW0_set_capabilities(void)
 	args.ebx = 2 << 8;
 	args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 
+	/*
+	 * It's ok to use existing buffer for next wmab_execute call.
+	 * But we need to kfree(out.pointer) if next wmab_execute fail.
+	 */
 	status = wmab_execute(&args, &out);
 	if (ACPI_FAILURE(status))
-		return status;
+		goto out;
 
 	obj = (union acpi_object *) out.pointer;
 	if (obj && obj->type == ACPI_TYPE_BUFFER
 	&& obj->buffer.length == sizeof(struct wmab_ret)) {
 		ret = *((struct wmab_ret *) obj->buffer.pointer);
 	} else {
-		return AE_ERROR;
+		status = AE_ERROR;
+		goto out;
 	}
 
 	if (ret.eax & 0x1)
 		interface->capability |= ACER_CAP_BLUETOOTH;
 
-	kfree(out.pointer);
-
 	/*
 	 * This appears to be safe to enable, since all Wistron based laptops
 	 * appear to use the same EC register for brightness, even if they
@@ -632,7 +626,10 @@ static acpi_status AMW0_set_capabilities(void)
 	if (quirks->brightness >= 0)
 		interface->capability |= ACER_CAP_BRIGHTNESS;
 
-	return AE_OK;
+	status = AE_OK;
+out:
+	kfree(out.pointer);
+	return status;
 }
 
 static struct wmi_interface AMW0_interface = {
@@ -772,6 +769,7 @@ static acpi_status WMID_set_capabilities(void)
 		obj->buffer.length == sizeof(u32)) {
 		devices = *((u32 *) obj->buffer.pointer);
 	} else {
+		kfree(out.pointer);
 		return AE_ERROR;
 	}
 
@@ -788,6 +786,7 @@ static acpi_status WMID_set_capabilities(void)
 	if (!(devices & 0x20))
 		max_brightness = 0x9;
 
+	kfree(out.pointer);
 	return status;
 }
 
@@ -1084,8 +1083,7 @@ static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
 	}
 }
 
-static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
-	show_interface, NULL);
+static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
 
 /*
  * debugfs functions
@@ -1095,6 +1093,7 @@ static u32 get_wmid_devices(void)
 	struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
 	union acpi_object *obj;
 	acpi_status status;
+	u32 devices = 0;
 
 	status = wmi_query_block(WMID_GUID2, 1, &out);
 	if (ACPI_FAILURE(status))
@@ -1103,10 +1102,11 @@ static u32 get_wmid_devices(void)
 	obj = (union acpi_object *) out.pointer;
 	if (obj && obj->type == ACPI_TYPE_BUFFER &&
 		obj->buffer.length == sizeof(u32)) {
-		return *((u32 *) obj->buffer.pointer);
-	} else {
-		return 0;
+		devices = *((u32 *) obj->buffer.pointer);
 	}
+
+	kfree(out.pointer);
+	return devices;
 }
 
 /*
@@ -1327,22 +1327,31 @@ static int __init acer_wmi_init(void)
 		       "generic video driver\n");
 	}
 
-	if (platform_driver_register(&acer_platform_driver)) {
+	err = platform_driver_register(&acer_platform_driver);
+	if (err) {
 		printk(ACER_ERR "Unable to register platform driver.\n");
 		goto error_platform_register;
 	}
+
 	acer_platform_device = platform_device_alloc("acer-wmi", -1);
-	platform_device_add(acer_platform_device);
+	if (!acer_platform_device) {
+		err = -ENOMEM;
+		goto error_device_alloc;
+	}
+
+	err = platform_device_add(acer_platform_device);
+	if (err)
+		goto error_device_add;
 
 	err = create_sysfs();
 	if (err)
-		return err;
+		goto error_create_sys;
 
 	if (wmi_has_guid(WMID_GUID2)) {
 		interface->debug.wmid_devices = get_wmid_devices();
 		err = create_debugfs();
 		if (err)
-			return err;
+			goto error_create_debugfs;
 	}
 
 	/* Override any initial settings with values from the commandline */
@@ -1350,15 +1359,23 @@ static int __init acer_wmi_init(void)
 
 	return 0;
 
+error_create_debugfs:
+	remove_sysfs(acer_platform_device);
+error_create_sys:
+	platform_device_del(acer_platform_device);
+error_device_add:
+	platform_device_put(acer_platform_device);
+error_device_alloc:
+	platform_driver_unregister(&acer_platform_driver);
 error_platform_register:
-	return -ENODEV;
+	return err;
 }
 
 static void __exit acer_wmi_exit(void)
 {
 	remove_sysfs(acer_platform_device);
 	remove_debugfs();
-	platform_device_del(acer_platform_device);
+	platform_device_unregister(acer_platform_device);
 	platform_driver_unregister(&acer_platform_driver);
 
 	printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");

drivers/platform/x86/asus-laptop.c

@@ -76,18 +76,18 @@ MODULE_LICENSE("GPL");
  * So, if something doesn't work as you want, just try other values =)
  */
 static uint wapf = 1;
-module_param(wapf, uint, 0644);
+module_param(wapf, uint, 0444);
 MODULE_PARM_DESC(wapf, "WAPF value");
 
 static int wlan_status = 1;
 static int bluetooth_status = 1;
 
-module_param(wlan_status, int, 0644);
+module_param(wlan_status, int, 0444);
 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
 		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 		 "default is 1");
 
-module_param(bluetooth_status, int, 0644);
+module_param(bluetooth_status, int, 0444);
 MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
 		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 		 "default is 1");
@@ -297,7 +297,7 @@ static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
 	acpi_status status;
 
 	if (!handle)
-		return 0;
+		return -1;
 
 	params.count = 1;
 	params.pointer = &in_obj;
@@ -796,10 +796,11 @@ static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
 
 	rv = parse_arg(buf, count, &value);
 	if (rv > 0) {
-		if (write_acpi_int(asus->handle, METHOD_LEDD, value))
+		if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
 			pr_warning("LED display write failed\n");
-		else
-			asus->ledd_status = (u32) value;
+			return -ENODEV;
+		}
+		asus->ledd_status = (u32) value;
 	}
 	return rv;
 }
@@ -1123,7 +1124,7 @@ static int asus_input_init(struct asus_laptop *asus)
 	input = input_allocate_device();
 	if (!input) {
 		pr_info("Unable to allocate input device\n");
-		return 0;
+		return -ENOMEM;
 	}
 	input->name = "Asus Laptop extra buttons";
 	input->phys = ASUS_LAPTOP_FILE "/input0";
@@ -1134,20 +1135,20 @@ static int asus_input_init(struct asus_laptop *asus)
 	error = sparse_keymap_setup(input, asus_keymap, NULL);
 	if (error) {
 		pr_err("Unable to setup input device keymap\n");
-		goto err_keymap;
+		goto err_free_dev;
 	}
 	error = input_register_device(input);
 	if (error) {
 		pr_info("Unable to register input device\n");
-		goto err_device;
+		goto err_free_keymap;
 	}
 
 	asus->inputdev = input;
 	return 0;
 
-err_keymap:
+err_free_keymap:
 	sparse_keymap_free(input);
-err_device:
+err_free_dev:
 	input_free_device(input);
 	return error;
 }
@@ -1397,8 +1398,10 @@ static int asus_laptop_get_info(struct asus_laptop *asus)
 		}
 	}
 	asus->name = kstrdup(string, GFP_KERNEL);
-	if (!asus->name)
+	if (!asus->name) {
+		kfree(buffer.pointer);
 		return -ENOMEM;
+	}
 
 	if (*string)
 		pr_notice("  %s model detected\n", string);

drivers/platform/x86/asus_acpi.c

@@ -1330,6 +1330,9 @@ static int asus_hotk_get_info(void)
 			hotk->model = P30;
 			printk(KERN_NOTICE
 			       "  Samsung P30 detected, supported\n");
+			hotk->methods = &model_conf[hotk->model];
+			kfree(model);
+			return 0;
 		} else {
 			hotk->model = M2E;
 			printk(KERN_NOTICE "  unsupported model %s, trying "
@@ -1339,8 +1342,6 @@ static int asus_hotk_get_info(void)
 			kfree(model);
 			return -ENODEV;
 		}
-		hotk->methods = &model_conf[hotk->model];
-		return AE_OK;
 	}
 	hotk->methods = &model_conf[hotk->model];
 	printk(KERN_NOTICE "  %s model detected, supported\n", string);
@@ -1374,7 +1375,7 @@ static int asus_hotk_get_info(void)
 
 	kfree(model);
 
-	return AE_OK;
+	return 0;
 }
 
 static int asus_hotk_check(void)

drivers/platform/x86/classmate-laptop.c

@@ -208,7 +208,7 @@ static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
 	return strnlen(buf, count);
 }
 
-struct device_attribute cmpc_accel_sensitivity_attr = {
+static struct device_attribute cmpc_accel_sensitivity_attr = {
 	.attr = { .name = "sensitivity", .mode = 0660 },
 	.show = cmpc_accel_sensitivity_show,
 	.store = cmpc_accel_sensitivity_store
@@ -573,16 +573,17 @@ static int cmpc_ipml_add(struct acpi_device *acpi)
 
 	ipml->rf = rfkill_alloc("cmpc_rfkill", &acpi->dev, RFKILL_TYPE_WLAN,
 				&cmpc_rfkill_ops, acpi->handle);
-	/* rfkill_alloc may fail if RFKILL is disabled. We should still work
-	 * anyway. */
-	if (!IS_ERR(ipml->rf)) {
+	/*
+	 * If RFKILL is disabled, rfkill_alloc will return ERR_PTR(-ENODEV).
+	 * This is OK, however, since all other uses of the device will not
+	 * derefence it.
+	 */
+	if (ipml->rf) {
 		retval = rfkill_register(ipml->rf);
 		if (retval) {
 			rfkill_destroy(ipml->rf);
 			ipml->rf = NULL;
 		}
-	} else {
-		ipml->rf = NULL;
 	}
 
 	dev_set_drvdata(&acpi->dev, ipml);

drivers/platform/x86/dell-laptop.c

@@ -82,6 +82,12 @@ static const struct dmi_system_id __initdata dell_device_table[] = {
 			DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
 		},
 	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/
+		},
+	},
 	{
 		.ident = "Dell Computer Corporation",
 		.matches = {
@@ -467,7 +473,7 @@ static struct backlight_ops dell_ops = {
 	.update_status  = dell_send_intensity,
 };
 
-bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
+static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
 			      struct serio *port)
 {
 	static bool extended;
@@ -621,4 +627,5 @@ MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
 MODULE_DESCRIPTION("Dell laptop driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("dmi:*svnDellInc.:*:ct8:*");
+MODULE_ALIAS("dmi:*svnDellInc.:*:ct9:*");
 MODULE_ALIAS("dmi:*svnDellComputerCorporation.:*:ct8:*");

drivers/platform/x86/dell-wmi.c

@@ -221,7 +221,7 @@ static void dell_wmi_notify(u32 value, void *context)
 			return;
 		}
 
-		if (dell_new_hk_type)
+		if (dell_new_hk_type || buffer_entry[1] == 0x0)
 			reported_key = (int)buffer_entry[2];
 		else
 			reported_key = (int)buffer_entry[1] & 0xffff;
@@ -339,13 +339,18 @@ static int __init dell_wmi_init(void)
 	acpi_video = acpi_video_backlight_support();
 
 	err = dell_wmi_input_setup();
-	if (err)
+	if (err) {
+		if (dell_new_hk_type)
+			kfree(dell_wmi_keymap);
 		return err;
+	}
 
 	status = wmi_install_notify_handler(DELL_EVENT_GUID,
 					 dell_wmi_notify, NULL);
 	if (ACPI_FAILURE(status)) {
 		input_unregister_device(dell_wmi_input_dev);
+		if (dell_new_hk_type)
+			kfree(dell_wmi_keymap);
 		printk(KERN_ERR
 			"dell-wmi: Unable to register notify handler - %d\n",
 			status);
@@ -359,6 +364,8 @@ static void __exit dell_wmi_exit(void)
 {
 	wmi_remove_notify_handler(DELL_EVENT_GUID);
 	input_unregister_device(dell_wmi_input_dev);
+	if (dell_new_hk_type)
+		kfree(dell_wmi_keymap);
 }
 
 module_init(dell_wmi_init);

drivers/platform/x86/eeepc-laptop.c

@@ -53,7 +53,7 @@ MODULE_LICENSE("GPL");
 
 static bool hotplug_disabled;
 
-module_param(hotplug_disabled, bool, 0644);
+module_param(hotplug_disabled, bool, 0444);
 MODULE_PARM_DESC(hotplug_disabled,
 		 "Disable hotplug for wireless device. "
 		 "If your laptop need that, please report to "

drivers/platform/x86/fujitsu-laptop.c

@@ -182,7 +182,7 @@ static enum led_brightness logolamp_get(struct led_classdev *cdev);
 static void logolamp_set(struct led_classdev *cdev,
 			       enum led_brightness brightness);
 
-struct led_classdev logolamp_led = {
+static struct led_classdev logolamp_led = {
  .name = "fujitsu::logolamp",
  .brightness_get = logolamp_get,
  .brightness_set = logolamp_set
@@ -192,7 +192,7 @@ static enum led_brightness kblamps_get(struct led_classdev *cdev);
 static void kblamps_set(struct led_classdev *cdev,
 			       enum led_brightness brightness);
 
-struct led_classdev kblamps_led = {
+static struct led_classdev kblamps_led = {
  .name = "fujitsu::kblamps",
  .brightness_get = kblamps_get,
  .brightness_set = kblamps_set
@@ -603,7 +603,7 @@ static int dmi_check_cb_s6410(const struct dmi_system_id *id)
 	dmi_check_cb_common(id);
 	fujitsu->keycode1 = KEY_SCREENLOCK;	/* "Lock" */
 	fujitsu->keycode2 = KEY_HELP;	/* "Mobility Center" */
-	return 0;
+	return 1;
 }
 
 static int dmi_check_cb_s6420(const struct dmi_system_id *id)
@@ -611,7 +611,7 @@ static int dmi_check_cb_s6420(const struct dmi_system_id *id)
 	dmi_check_cb_common(id);
 	fujitsu->keycode1 = KEY_SCREENLOCK;	/* "Lock" */
 	fujitsu->keycode2 = KEY_HELP;	/* "Mobility Center" */
-	return 0;
+	return 1;
 }
 
 static int dmi_check_cb_p8010(const struct dmi_system_id *id)
@@ -620,7 +620,7 @@ static int dmi_check_cb_p8010(const struct dmi_system_id *id)
 	fujitsu->keycode1 = KEY_HELP;	/* "Support" */
 	fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;	/* "Presentation" */
 	fujitsu->keycode4 = KEY_WWW;	/* "Internet" */
-	return 0;
+	return 1;
 }
 
 static struct dmi_system_id fujitsu_dmi_table[] = {
@@ -725,6 +725,7 @@ static int acpi_fujitsu_add(struct acpi_device *device)
 
 err_unregister_input_dev:
 	input_unregister_device(input);
+	input = NULL;
 err_free_input_dev:
 	input_free_device(input);
 err_stop:
@@ -738,8 +739,6 @@ static int acpi_fujitsu_remove(struct acpi_device *device, int type)
 
 	input_unregister_device(input);
 
-	input_free_device(input);
-
 	fujitsu->acpi_handle = NULL;
 
 	return 0;
@@ -930,6 +929,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
 
 err_unregister_input_dev:
 	input_unregister_device(input);
+	input = NULL;
 err_free_input_dev:
 	input_free_device(input);
 err_free_fifo:
@@ -953,8 +953,6 @@ static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
 
 	input_unregister_device(input);
 
-	input_free_device(input);
-
 	kfifo_free(&fujitsu_hotkey->fifo);
 
 	fujitsu_hotkey->acpi_handle = NULL;

drivers/platform/x86/intel_menlow.c

@@ -53,6 +53,8 @@ MODULE_LICENSE("GPL");
 #define MEMORY_ARG_CUR_BANDWIDTH 1
 #define MEMORY_ARG_MAX_BANDWIDTH 0
 
+static void intel_menlow_unregister_sensor(void);
+
 /*
  * GTHS returning 'n' would mean that [0,n-1] states are supported
  * In that case max_cstate would be n-1
@@ -406,8 +408,10 @@ static int intel_menlow_add_one_attribute(char *name, int mode, void *show,
 	attr->handle = handle;
 
 	result = device_create_file(dev, &attr->attr);
-	if (result)
+	if (result) {
+		kfree(attr);
 		return result;
+	}
 
 	mutex_lock(&intel_menlow_attr_lock);
 	list_add_tail(&attr->node, &intel_menlow_attr_list);
@@ -431,11 +435,11 @@ static acpi_status intel_menlow_register_sensor(acpi_handle handle, u32 lvl,
 	/* _TZ must have the AUX0/1 methods */
 	status = acpi_get_handle(handle, GET_AUX0, &dummy);
 	if (ACPI_FAILURE(status))
-		goto not_found;
+		return (status == AE_NOT_FOUND) ? AE_OK : status;
 
 	status = acpi_get_handle(handle, SET_AUX0, &dummy);
 	if (ACPI_FAILURE(status))
-		goto not_found;
+		return (status == AE_NOT_FOUND) ? AE_OK : status;
 
 	result = intel_menlow_add_one_attribute("aux0", 0644,
 						aux0_show, aux0_store,
@@ -445,17 +449,19 @@ static acpi_status intel_menlow_register_sensor(acpi_handle handle, u32 lvl,
 
 	status = acpi_get_handle(handle, GET_AUX1, &dummy);
 	if (ACPI_FAILURE(status))
-		goto not_found;
+		goto aux1_not_found;
 
 	status = acpi_get_handle(handle, SET_AUX1, &dummy);
 	if (ACPI_FAILURE(status))
-		goto not_found;
+		goto aux1_not_found;
 
 	result = intel_menlow_add_one_attribute("aux1", 0644,
 						aux1_show, aux1_store,
 						&thermal->device, handle);
-	if (result)
+	if (result) {
+		intel_menlow_unregister_sensor();
 		return AE_ERROR;
+	}
 
 	/*
 	 * create the "dabney_enabled" attribute which means the user app
@@ -465,14 +471,17 @@ static acpi_status intel_menlow_register_sensor(acpi_handle handle, u32 lvl,
 	result = intel_menlow_add_one_attribute("bios_enabled", 0444,
 						bios_enabled_show, NULL,
 						&thermal->device, handle);
-	if (result)
+	if (result) {
+		intel_menlow_unregister_sensor();
 		return AE_ERROR;
+	}
 
- not_found:
+ aux1_not_found:
 	if (status == AE_NOT_FOUND)
 		return AE_OK;
-	else
-		return status;
+
+	intel_menlow_unregister_sensor();
+	return status;
 }
 
 static void intel_menlow_unregister_sensor(void)
@@ -513,8 +522,10 @@ static int __init intel_menlow_module_init(void)
 	status = acpi_walk_namespace(ACPI_TYPE_THERMAL, ACPI_ROOT_OBJECT,
 				     ACPI_UINT32_MAX,
 				     intel_menlow_register_sensor, NULL, NULL, NULL);
-	if (ACPI_FAILURE(status))
+	if (ACPI_FAILURE(status)) {
+		acpi_bus_unregister_driver(&intel_menlow_memory_driver);
 		return -ENODEV;
+	}
 
 	return 0;
 }

drivers/platform/x86/intel_pmic_gpio.c

+/* Moorestown PMIC GPIO (access through IPC) driver
+ * Copyright (c) 2008 - 2009, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Supports:
+ * Moorestown platform PMIC chip
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/stddef.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <asm/intel_scu_ipc.h>
+#include <linux/device.h>
+#include <linux/intel_pmic_gpio.h>
+#include <linux/platform_device.h>
+
+#define DRIVER_NAME "pmic_gpio"
+
+/* register offset that IPC driver should use
+ * 8 GPIO + 8 GPOSW (6 controllable) + 8GPO
+ */
+enum pmic_gpio_register {
+	GPIO0		= 0xE0,
+	GPIO7		= 0xE7,
+	GPIOINT		= 0xE8,
+	GPOSWCTL0	= 0xEC,
+	GPOSWCTL5	= 0xF1,
+	GPO		= 0xF4,
+};
+
+/* bits definition for GPIO & GPOSW */
+#define GPIO_DRV 0x01
+#define GPIO_DIR 0x02
+#define GPIO_DIN 0x04
+#define GPIO_DOU 0x08
+#define GPIO_INTCTL 0x30
+#define GPIO_DBC 0xc0
+
+#define GPOSW_DRV 0x01
+#define GPOSW_DOU 0x08
+#define GPOSW_RDRV 0x30
+
+
+#define NUM_GPIO 24
+
+struct pmic_gpio_irq {
+	spinlock_t lock;
+	u32 trigger[NUM_GPIO];
+	u32 dirty;
+	struct work_struct work;
+};
+
+
+struct pmic_gpio {
+	struct gpio_chip	chip;
+	struct pmic_gpio_irq	irqtypes;
+	void			*gpiointr;
+	int			irq;
+	unsigned		irq_base;
+};
+
+static void pmic_program_irqtype(int gpio, int type)
+{
+	if (type & IRQ_TYPE_EDGE_RISING)
+		intel_scu_ipc_update_register(GPIO0 + gpio, 0x20, 0x20);
+	else
+		intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x20);
+
+	if (type & IRQ_TYPE_EDGE_FALLING)
+		intel_scu_ipc_update_register(GPIO0 + gpio, 0x10, 0x10);
+	else
+		intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x10);
+};
+
+static void pmic_irqtype_work(struct work_struct *work)
+{
+	struct pmic_gpio_irq *t =
+		container_of(work, struct pmic_gpio_irq, work);
+	unsigned long flags;
+	int i;
+	u16 type;
+
+	spin_lock_irqsave(&t->lock, flags);
+	/* As we drop the lock, we may need multiple scans if we race the
+	   pmic_irq_type function */
+	while (t->dirty) {
+		/*
+		 *	For each pin that has the dirty bit set send an IPC
+		 *	message to configure the hardware via the PMIC
+		 */
+		for (i = 0; i < NUM_GPIO; i++) {
+			if (!(t->dirty & (1 << i)))
+				continue;
+			t->dirty &= ~(1 << i);
+			/* We can't trust the array entry or dirty
+			   once the lock is dropped */
+			type = t->trigger[i];
+			spin_unlock_irqrestore(&t->lock, flags);
+			pmic_program_irqtype(i, type);
+			spin_lock_irqsave(&t->lock, flags);
+		}
+	}
+	spin_unlock_irqrestore(&t->lock, flags);
+}
+
+static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+	if (offset > 8) {
+		printk(KERN_ERR
+			"%s: only pin 0-7 support input\n", __func__);
+		return -1;/* we only have 8 GPIO can use as input */
+	}
+	return intel_scu_ipc_update_register(GPIO0 + offset,
+							GPIO_DIR, GPIO_DIR);
+}
+
+static int pmic_gpio_direction_output(struct gpio_chip *chip,
+			unsigned offset, int value)
+{
+	int rc = 0;
+
+	if (offset < 8)/* it is GPIO */
+		rc = intel_scu_ipc_update_register(GPIO0 + offset,
+				GPIO_DRV | GPIO_DOU | GPIO_DIR,
+				GPIO_DRV | (value ? GPIO_DOU : 0));
+	else if (offset < 16)/* it is GPOSW */
+		rc = intel_scu_ipc_update_register(GPOSWCTL0 + offset - 8,
+				GPOSW_DRV | GPOSW_DOU | GPOSW_RDRV,
+				GPOSW_DRV | (value ? GPOSW_DOU : 0));
+	else if (offset > 15 && offset < 24)/* it is GPO */
+		rc = intel_scu_ipc_update_register(GPO,
+				1 << (offset - 16),
+				value ? 1 << (offset - 16) : 0);
+	else {
+		printk(KERN_ERR
+			"%s: invalid PMIC GPIO pin %d!\n", __func__, offset);
+		WARN_ON(1);
+	}
+
+	return rc;
+}
+
+static int pmic_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+	u8 r;
+	int ret;
+
+	/* we only have 8 GPIO pins we can use as input */
+	if (offset > 8)
+		return -EOPNOTSUPP;
+	ret = intel_scu_ipc_ioread8(GPIO0 + offset, &r);
+	if (ret < 0)
+		return ret;
+	return r & GPIO_DIN;
+}
+
+static void pmic_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+	if (offset < 8)/* it is GPIO */
+		intel_scu_ipc_update_register(GPIO0 + offset,
+			GPIO_DRV | GPIO_DOU,
+			GPIO_DRV | (value ? GPIO_DOU : 0));
+	else if (offset < 16)/* it is GPOSW */
+		intel_scu_ipc_update_register(GPOSWCTL0 + offset - 8,
+			GPOSW_DRV | GPOSW_DOU | GPOSW_RDRV,
+			GPOSW_DRV | (value ? GPOSW_DOU : 0));
+	else if (offset > 15 && offset < 24) /* it is GPO */
+		intel_scu_ipc_update_register(GPO,
+			1 << (offset - 16),
+			value ? 1 << (offset - 16) : 0);
+}
+
+static int pmic_irq_type(unsigned irq, unsigned type)
+{
+	struct pmic_gpio *pg = get_irq_chip_data(irq);
+	u32 gpio = irq - pg->irq_base;
+	unsigned long flags;
+
+	if (gpio > pg->chip.ngpio)
+		return -EINVAL;
+
+	spin_lock_irqsave(&pg->irqtypes.lock, flags);
+	pg->irqtypes.trigger[gpio] = type;
+	pg->irqtypes.dirty |=  (1 << gpio);
+	spin_unlock_irqrestore(&pg->irqtypes.lock, flags);
+	schedule_work(&pg->irqtypes.work);
+	return 0;
+}
+
+
+
+static int pmic_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+	struct pmic_gpio *pg = container_of(chip, struct pmic_gpio, chip);
+
+	return pg->irq_base + offset;
+}
+
+/* the gpiointr register is read-clear, so just do nothing. */
+static void pmic_irq_unmask(unsigned irq)
+{
+};
+
+static void pmic_irq_mask(unsigned irq)
+{
+};
+
+static struct irq_chip pmic_irqchip = {
+	.name		= "PMIC-GPIO",
+	.mask		= pmic_irq_mask,
+	.unmask		= pmic_irq_unmask,
+	.set_type	= pmic_irq_type,
+};
+
+static void pmic_irq_handler(unsigned irq, struct irq_desc *desc)
+{
+	struct pmic_gpio *pg = (struct pmic_gpio *)get_irq_data(irq);
+	u8 intsts = *((u8 *)pg->gpiointr + 4);
+	int gpio;
+
+	for (gpio = 0; gpio < 8; gpio++) {
+		if (intsts & (1 << gpio)) {
+			pr_debug("pmic pin %d triggered\n", gpio);
+			generic_handle_irq(pg->irq_base + gpio);
+		}
+	}
+	desc->chip->eoi(irq);
+}
+
+static int __devinit platform_pmic_gpio_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	int irq = platform_get_irq(pdev, 0);
+	struct intel_pmic_gpio_platform_data *pdata = dev->platform_data;
+
+	struct pmic_gpio *pg;
+	int retval;
+	int i;
+
+	if (irq < 0) {
+		dev_dbg(dev, "no IRQ line\n");
+		return -EINVAL;
+	}
+
+	if (!pdata || !pdata->gpio_base || !pdata->irq_base) {
+		dev_dbg(dev, "incorrect or missing platform data\n");
+		return -EINVAL;
+	}
+
+	pg = kzalloc(sizeof(*pg), GFP_KERNEL);
+	if (!pg)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, pg);
+
+	pg->irq = irq;
+	/* setting up SRAM mapping for GPIOINT register */
+	pg->gpiointr = ioremap_nocache(pdata->gpiointr, 8);
+	if (!pg->gpiointr) {
+		printk(KERN_ERR "%s: Can not map GPIOINT.\n", __func__);
+		retval = -EINVAL;
+		goto err2;
+	}
+	pg->irq_base = pdata->irq_base;
+	pg->chip.label = "intel_pmic";
+	pg->chip.direction_input = pmic_gpio_direction_input;
+	pg->chip.direction_output = pmic_gpio_direction_output;
+	pg->chip.get = pmic_gpio_get;
+	pg->chip.set = pmic_gpio_set;
+	pg->chip.to_irq = pmic_gpio_to_irq;
+	pg->chip.base = pdata->gpio_base;
+	pg->chip.ngpio = NUM_GPIO;
+	pg->chip.can_sleep = 1;
+	pg->chip.dev = dev;
+
+	INIT_WORK(&pg->irqtypes.work, pmic_irqtype_work);
+	spin_lock_init(&pg->irqtypes.lock);
+
+	pg->chip.dev = dev;
+	retval = gpiochip_add(&pg->chip);
+	if (retval) {
+		printk(KERN_ERR "%s: Can not add pmic gpio chip.\n", __func__);
+		goto err;
+	}
+	set_irq_data(pg->irq, pg);
+	set_irq_chained_handler(pg->irq, pmic_irq_handler);
+	for (i = 0; i < 8; i++) {
+		set_irq_chip_and_handler_name(i + pg->irq_base, &pmic_irqchip,
+					handle_simple_irq, "demux");
+		set_irq_chip_data(i + pg->irq_base, pg);
+	}
+	return 0;
+err:
+	iounmap(pg->gpiointr);
+err2:
+	kfree(pg);
+	return retval;
+}
+
+/* at the same time, register a platform driver
+ * this supports the sfi 0.81 fw */
+static struct platform_driver platform_pmic_gpio_driver = {
+	.driver = {
+		.name		= DRIVER_NAME,
+		.owner		= THIS_MODULE,
+	},
+	.probe		= platform_pmic_gpio_probe,
+};
+
+static int __init platform_pmic_gpio_init(void)
+{
+	return platform_driver_register(&platform_pmic_gpio_driver);
+}
+
+subsys_initcall(platform_pmic_gpio_init);
+
+MODULE_AUTHOR("Alek Du <alek.du@intel.com>");
+MODULE_DESCRIPTION("Intel Moorestown PMIC GPIO driver");
+MODULE_LICENSE("GPL v2");

drivers/staging/rar_register/rar_register.c → drivers/platform/x86/intel_rar_register.c

@@ -40,15 +40,12 @@
  *      Initial publish
  */
 
-#define DEBUG 1
-
-#include "rar_register.h"
-
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/spinlock.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
+#include <linux/rar_register.h>
 
 /* === Lincroft Message Bus Interface === */
 #define LNC_MCR_OFFSET		0xD0	/* Message Control Register */
@@ -155,7 +152,6 @@ static struct rar_device *_rar_to_device(int rar, int *off)
 	return NULL;
 }
 
-
 /**
  *	rar_to_device		-	return the device handling this RAR
  *	@rar: RAR number
@@ -496,7 +492,7 @@ EXPORT_SYMBOL(rar_lock);
  *	a driver that do require a valid RAR address. One of those
  *	steps would be to call rar_get_address()
  *
- *	This function return 0 on success an error code on failure.
+ *	This function return 0 on success or an error code on failure.
  */
 int register_rar(int num, int (*callback)(unsigned long data),
 							unsigned long data)

drivers/platform/x86/msi-wmi.c

@@ -57,7 +57,7 @@ static struct key_entry msi_wmi_keymap[] = {
 };
 static ktime_t last_pressed[ARRAY_SIZE(msi_wmi_keymap) - 1];
 
-struct backlight_device *backlight;
+static struct backlight_device *backlight;
 
 static int backlight_map[] = { 0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF };
 

drivers/staging/rar_register/Makefile

-EXTRA_CFLAGS += -DLITTLE__ENDIAN
-obj-$(CONFIG_RAR_REGISTER) += rar_register.o