patch-2.4.6 linux/drivers/acpi/ospm/thermal/tz_osl.c

• Lines: 331
• Date: Wed Jun 20 17:47:40 2001
• Orig file: v2.4.5/linux/drivers/acpi/ospm/thermal/tz_osl.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/ospm/thermal/tz_osl.c linux/drivers/acpi/ospm/thermal/tz_osl.c
@@ -0,0 +1,330 @@
+/******************************************************************************
+ *
+ * Module Name: tz_osl.c
+ *   $Revision: 18 $
+ *
+ *****************************************************************************/
+
+/*
+ *  Copyright (C) 2000, 2001 Andrew Grover
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <acpi.h>
+#include "tz.h"
+
+
+MODULE_AUTHOR("Andrew Grover");
+MODULE_DESCRIPTION("ACPI Component Architecture (CA) - Thermal Zone Driver");
+
+int TZP = 0;
+MODULE_PARM(TZP, "i");
+MODULE_PARM_DESC(TZP, "Thermal zone polling frequency, in 1/10 seconds.\n");
+
+
+#define TZ_PROC_ROOT		"thermal"
+#define TZ_PROC_STATUS		"status"
+#define TZ_PROC_INFO		"info"
+
+extern struct proc_dir_entry	*bm_proc_root;
+static struct proc_dir_entry	*tz_proc_root = NULL;
+
+
+/****************************************************************************
+ * 
+ * FUNCTION:	tz_osl_proc_read_info
+ *
+ ****************************************************************************/
+
+static int
+tz_osl_proc_read_info (
+	char			*page, 
+	char			**start, 
+	off_t			off, 
+	int 			count, 
+	int 			*eof, 
+	void			*context)
+{
+	TZ_CONTEXT		*thermal_zone = NULL;
+	char			*p = page;
+	int 			len = 0;
+
+	if (!context || (off != 0)) {
+		goto end;
+	}
+
+	thermal_zone = (TZ_CONTEXT*)context;
+
+	p += sprintf(p, "<TBD>\n");
+
+end:
+	len = (p - page);
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+
+	return(len);
+}
+
+
+/****************************************************************************
+ * 
+ * FUNCTION:	tz_osl_proc_read_status
+ *
+ ****************************************************************************/
+
+static int
+tz_osl_proc_read_status (
+	char			*page, 
+	char			**start, 
+	off_t			off, 
+	int 			count, 
+	int 			*eof, 
+	void			*context)
+{
+	TZ_CONTEXT		*thermal_zone = NULL;
+	char			*p = page;
+	int 			len = 0;
+
+	if (!context || (off != 0)) {
+		goto end;
+	}
+
+	thermal_zone = (TZ_CONTEXT*)context;
+
+	p += sprintf(p, "Temperature:             %d (1/10th degrees Kelvin)\n", 
+		thermal_zone->policy.temperature);
+
+	p += sprintf(p, "State:                   ");
+	if (thermal_zone->policy.state & TZ_STATE_ACTIVE) {
+		p += sprintf(p, "active[%d] ", thermal_zone->policy.state & 0x07);
+	}
+	if (thermal_zone->policy.state & TZ_STATE_PASSIVE) {
+		p += sprintf(p, "passive ");
+	}
+	if (thermal_zone->policy.state & TZ_STATE_CRITICAL) {
+		p += sprintf(p, "critical ");
+	}
+	if (thermal_zone->policy.state == 0) {
+		p += sprintf(p, "ok ");
+	}
+	p += sprintf(p, "\n");
+
+	p += sprintf(p, "Cooling Mode:            ");
+	switch (thermal_zone->policy.cooling_mode) {
+	case TZ_COOLING_MODE_ACTIVE:
+		p += sprintf(p, "active (noisy)\n");
+		break;
+	case TZ_COOLING_MODE_PASSIVE:
+		p += sprintf(p, "passive (quiet)\n");
+		break;
+	default:
+		p += sprintf(p, "unknown\n");
+		break;
+	}
+
+	p += sprintf(p, "Polling Frequency:       ");
+	switch (thermal_zone->policy.polling_freq) {
+	case 0:
+		p += sprintf(p, "n/a\n");
+		break;
+	default:
+		p += sprintf(p, "%d (1/10th seconds)\n", thermal_zone->policy.polling_freq);
+		break;
+	}
+
+end:
+	len = (p - page);
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+
+	return(len);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	tz_osl_add_device
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+tz_osl_add_device(
+	TZ_CONTEXT		*thermal_zone)
+{
+	struct proc_dir_entry	*proc_entry = NULL;
+
+	if (!thermal_zone) {
+		return(AE_BAD_PARAMETER);
+	}
+
+	printk("Thermal Zone: found\n");
+
+	proc_entry = proc_mkdir(thermal_zone->uid, tz_proc_root);
+	if (!proc_entry) {
+		return(AE_ERROR);
+	}
+
+	create_proc_read_entry(TZ_PROC_STATUS, S_IFREG | S_IRUGO, 
+		proc_entry, tz_osl_proc_read_status, (void*)thermal_zone);
+
+	create_proc_read_entry(TZ_PROC_INFO, S_IFREG | S_IRUGO, 
+		proc_entry, tz_osl_proc_read_info, (void*)thermal_zone);
+
+	return(AE_OK);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	tz_osl_remove_device
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+tz_osl_remove_device (
+	TZ_CONTEXT		*thermal_zone)
+{
+	char			proc_entry[64];
+
+	if (!thermal_zone) {
+		return(AE_BAD_PARAMETER);
+	}
+
+	sprintf(proc_entry, "%s/%s", thermal_zone->uid, TZ_PROC_INFO);
+	remove_proc_entry(proc_entry, tz_proc_root);
+
+	sprintf(proc_entry, "%s/%s", thermal_zone->uid, TZ_PROC_STATUS);
+	remove_proc_entry(proc_entry, tz_proc_root);
+
+	sprintf(proc_entry, "%s", thermal_zone->uid);
+	remove_proc_entry(proc_entry, tz_proc_root);
+
+	return(AE_OK);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	tz_osl_generate_event
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+tz_osl_generate_event (
+	u32			event,
+	TZ_CONTEXT		*thermal_zone)
+{
+	ACPI_STATUS		status = AE_OK;
+
+	if (!thermal_zone) {
+		return(AE_BAD_PARAMETER);
+	}
+
+	switch (event) {
+
+	case TZ_NOTIFY_TEMPERATURE_CHANGE:
+		status = bm_osl_generate_event(thermal_zone->device_handle, 
+			TZ_PROC_ROOT, thermal_zone->uid, event, 
+			thermal_zone->policy.temperature);
+		break;
+
+	case TZ_NOTIFY_THRESHOLD_CHANGE:
+	case TZ_NOTIFY_DEVICE_LISTS_CHANGE:
+		status = bm_osl_generate_event(thermal_zone->device_handle, 
+			TZ_PROC_ROOT, thermal_zone->uid, event, 0);
+		break;
+
+	default:
+		return(AE_BAD_PARAMETER);
+		break;
+	}
+
+	return(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	tz_osl_init
+ *
+ * PARAMETERS:	<none>
+ *
+ * RETURN:	0: Success
+ *
+ * DESCRIPTION: Module initialization.
+ *
+ ****************************************************************************/
+
+static int __init 
+tz_osl_init (void)
+{
+	ACPI_STATUS		status = AE_OK;
+
+	tz_proc_root = proc_mkdir(TZ_PROC_ROOT, bm_proc_root);
+	if (!tz_proc_root) {
+		status = AE_ERROR;
+	}
+	else {
+		status = tz_initialize();
+		if (ACPI_FAILURE(status)) {
+			remove_proc_entry(TZ_PROC_ROOT, bm_proc_root);
+		}
+
+	}
+
+	return (ACPI_SUCCESS(status)) ? 0 : -ENODEV;
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	tz_osl_cleanup
+ *
+ * PARAMETERS:	<none>
+ *
+ * RETURN:	<none>
+ *
+ * DESCRIPTION: Module cleanup.
+ *
+ ****************************************************************************/
+
+static void __exit 
+tz_osl_cleanup (void)
+{
+	tz_terminate();
+
+	if (tz_proc_root) {
+		remove_proc_entry(TZ_PROC_ROOT, bm_proc_root);
+	}
+
+	return;
+}
+
+
+module_init(tz_osl_init);
+module_exit(tz_osl_cleanup);