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Commit 5bb730fd authored by Zhang Rui's avatar Zhang Rui Committed by Len Brown
Browse files

ACPI: add ACPICA version in sysfs 



Add an ACPI attribute to indicate ACPICA version.
/proc/acpi/version is deprecated by /sys/module/acpi/parameters/acpica_version.

Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 219c3c8e

drivers/acpi/Kconfig

+3 −1
Original line number Diff line number Diff line
@@ -87,7 +87,9 @@ config ACPI_PROCFS 
	  and this proc interface will be removed some time later,

	  it's marked as deprecated.

	  ( /proc/acpi/debug_layer && debug_level are deprecated by

	    /sys/module/acpi/parameters/debug_layer && debug_level. )

	    /sys/module/acpi/parameters/debug_layer && debug_level.

	    /proc/acpi/info is deprecated by

	    /sys/module/acpi/parameters/acpica_version )



config ACPI_AC

	tristate "AC Adapter"

drivers/acpi/system.c

+24 −0
Original line number Diff line number Diff line
@@ -32,6 +32,11 @@ 


#define _COMPONENT		ACPI_SYSTEM_COMPONENT

ACPI_MODULE_NAME("acpi_system")

#ifdef MODULE_PARAM_PREFIX

#undef MODULE_PARAM_PREFIX

#endif

#define MODULE_PARAM_PREFIX "acpi."



#define ACPI_SYSTEM_CLASS		"system"

#define ACPI_SYSTEM_DRIVER_NAME		"ACPI System Driver"

#define ACPI_SYSTEM_DEVICE_NAME		"System"
@@ -41,9 +46,23 @@ ACPI_MODULE_NAME("acpi_system") 
#define ACPI_SYSTEM_FILE_FADT		"fadt"

extern struct fadt_descriptor acpi_fadt;



/*

 * Make ACPICA version work as module param

 */

static int param_get_acpica_version(char *buffer, struct kernel_param *kp) {

	int result;



	result = sprintf(buffer, "%x", ACPI_CA_VERSION);



	return result;

}



module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);



/* --------------------------------------------------------------------------

                              FS Interface (/proc)

   -------------------------------------------------------------------------- */

#ifdef CONFIG_ACPI_PROCFS



static int acpi_system_read_info(struct seq_file *seq, void *offset)

{
@@ -63,6 +82,7 @@ static const struct file_operations acpi_system_info_ops = { 
	.llseek = seq_lseek,

	.release = single_release,

};

#endif



static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t,

				     loff_t *);
@@ -128,6 +148,7 @@ static int __init acpi_system_init(void) 
	if (acpi_disabled)

		return 0;



#ifdef CONFIG_ACPI_PROCFS

	/* 'info' [R] */

	name = ACPI_SYSTEM_FILE_INFO;

	entry = create_proc_entry(name, S_IRUGO, acpi_root_dir);
@@ -136,6 +157,7 @@ static int __init acpi_system_init(void) 
	else {

		entry->proc_fops = &acpi_system_info_ops;

	}

#endif



	/* 'dsdt' [R] */

	name = ACPI_SYSTEM_FILE_DSDT;
@@ -159,7 +181,9 @@ static int __init acpi_system_init(void) 
      Error:

	remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);

	remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir);

#ifdef CONFIG_ACPI_PROCFS

	remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir);

#endif



	error = -EFAULT;

	goto Done;