patch-2.4.6 linux/drivers/acpi/ospm/battery/bt_osl.c

• Lines: 439
• Date: Wed Jun 20 17:47:40 2001
• Orig file: v2.4.5/linux/drivers/acpi/ospm/battery/bt_osl.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/ospm/battery/bt_osl.c linux/drivers/acpi/ospm/battery/bt_osl.c
@@ -0,0 +1,438 @@
+/******************************************************************************
+ *
+ * Module Name: bt_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
+ */
+
+/*
+ * Changes:
+ * Brendan Burns <bburns@wso.williams.edu> 2000-11-15
+ * - added proc battery interface
+ * - parse returned data from _BST and _BIF
+ * Andy Grover <andrew.grover@intel.com> 2000-12-8
+ * - improved proc interface
+ */
+
+
+#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 "bt.h"
+
+
+MODULE_AUTHOR("Andrew Grover");
+MODULE_DESCRIPTION("ACPI Component Architecture (CA) - Control Method Battery Driver");
+
+
+#define BT_PROC_ROOT		"battery"
+#define BT_PROC_STATUS		"status"
+#define BT_PROC_INFO		"info"
+
+extern struct proc_dir_entry	*bm_proc_root;
+static struct proc_dir_entry	*bt_proc_root = NULL;
+
+
+/****************************************************************************
+ * 
+ * FUNCTION:	bt_osl_proc_read_info
+ *
+ ****************************************************************************/
+
+static int
+bt_osl_proc_read_info (
+	char			*page, 
+	char			**start, 
+	off_t			off, 
+	int 			count, 
+	int 			*eof, 
+	void			*context)
+{
+	BT_CONTEXT		*battery = NULL;
+	BT_BATTERY_INFO 	*battery_info = NULL;
+	char			*p = page;
+	int 			len = 0;
+
+	if (!context || (off != 0)) {
+		goto end;
+	}
+
+	battery = (BT_CONTEXT*)context;
+
+	/*
+	 * Battery Present?
+	 * ----------------
+	 */
+	if (!battery->is_present) {
+		p += sprintf(p, "Present:                 no\n");
+		goto end;
+	}
+	else {
+		p += sprintf(p, "Present:                 yes\n");
+	}
+
+	/*
+	 * Get Battery Information:
+	 * ------------------------
+	 */
+	if (ACPI_FAILURE(bt_get_info(battery, &battery_info))) {
+		p += sprintf(p, "Error reading battery information (_BIF)\n");
+		goto end;
+	}
+
+	if (battery_info->design_capacity == BT_UNKNOWN) {
+		p += sprintf(p, "Design Capacity:         unknown\n");
+	}
+	else {
+		p += sprintf(p, "Design Capacity:         %d %sh\n", 
+			 battery_info->design_capacity, 
+			 battery->power_units);
+	}
+	
+	if (battery_info->last_full_capacity == BT_UNKNOWN) {
+		p += sprintf(p, "Last Full Capacity:      unknown\n");
+	} 
+	else {
+		p += sprintf(p, "Last Full Capacity:      %d %sh\n", 
+			 battery_info->last_full_capacity, 
+			 battery->power_units);
+	}
+
+	if (battery_info->battery_technology == 0) {
+		p += sprintf(p, "Battery Technology:      primary (non-rechargeable)\n");
+	}
+	else if (battery_info->battery_technology == 1) {
+		p += sprintf(p, "Battery Technology:      secondary (rechargeable)\n");
+	}
+	else {
+		p += sprintf(p, "Battery Technology:      unknown\n");
+	}
+
+	if (battery_info->design_voltage == BT_UNKNOWN) {
+		p += sprintf(p, "Design Voltage:          unknown\n");
+	}
+	else {
+		p += sprintf(p, "Design Voltage:          %d mV\n", 
+			 battery_info->design_voltage);
+	}
+	
+	p += sprintf(p, "Design Capacity Warning: %d %sh\n",
+		battery_info->design_capacity_warning, 
+		battery->power_units);
+	p += sprintf(p, "Design Capacity Low:     %d %sh\n",
+		battery_info->design_capacity_low, 
+		battery->power_units);
+	p += sprintf(p, "Capacity Granularity 1:  %d %sh\n",
+		battery_info->battery_capacity_granularity_1, 
+		battery->power_units);
+	p += sprintf(p, "Capacity Granularity 2:  %d %sh\n",
+		battery_info->battery_capacity_granularity_2, 
+		battery->power_units);
+	p += sprintf(p, "Model Number:            %s\n", 
+		battery_info->model_number);
+	p += sprintf(p, "Serial Number:           %s\n", 
+		battery_info->serial_number);
+	p += sprintf(p, "Battery Type:            %s\n", 
+		battery_info->battery_type);
+	p += sprintf(p, "OEM Info:                %s\n", 
+		battery_info->oem_info);
+	
+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;
+
+	acpi_os_free(battery_info);
+
+	return(len);
+}
+
+
+/****************************************************************************
+ * 
+ * FUNCTION:	bt_osl_proc_read_status
+ *
+ ****************************************************************************/
+
+static int
+bt_osl_proc_read_status (
+	char			*page, 
+	char			**start, 
+	off_t			off, 
+	int 			count, 
+	int 			*eof, 
+	void			*context)
+{
+	BT_CONTEXT		*battery = NULL;
+	BT_BATTERY_STATUS	*battery_status = NULL;
+	char			*p = page;
+	int 			len = 0;
+
+	if (!context || (off != 0)) {
+		goto end;
+	}
+
+	battery = (BT_CONTEXT*)context;
+
+	/*
+	 * Battery Present?
+	 * ----------------
+	 */
+	if (!battery->is_present) {
+		p += sprintf(p, "Present:                 no\n");
+		goto end;
+	}
+	else {
+		p += sprintf(p, "Present:                 yes\n");
+	}
+
+	/*
+	 * Get Battery Status:
+	 * -------------------
+	 */
+	if (ACPI_FAILURE(bt_get_status(battery, &battery_status))) {
+		p += sprintf(p, "Error reading battery status (_BST)\n");
+		goto end;
+	}
+
+	/*
+	 * Store Data:
+	 * -----------
+	 */
+
+	if (!battery_status->state) {
+		p += sprintf(p, "State:                   ok\n"); 
+	}
+	else {
+		if (battery_status->state & 0x1)
+			p += sprintf(p, "State:                   discharging\n");
+		if (battery_status->state & 0x2)
+			p += sprintf(p, "State:                   charging\n");
+		if (battery_status->state & 0x4)
+			p += sprintf(p, "State:                   critically low\n");
+	}
+
+	if (battery_status->present_rate == BT_UNKNOWN) {
+		p += sprintf(p, "Present Rate:            unknown\n");
+	}
+	else {
+		p += sprintf(p, "Present Rate:            %d %s\n",
+			battery_status->present_rate, 
+			battery->power_units);
+	}
+
+	if (battery_status->remaining_capacity == BT_UNKNOWN) {
+		p += sprintf(p, "Remaining Capacity:      unknown\n");
+	}
+	else {
+		p += sprintf(p, "Remaining Capacity:      %d %sh\n",
+			battery_status->remaining_capacity, 
+			battery->power_units);
+	}
+
+	if (battery_status->present_voltage == BT_UNKNOWN) {
+		p += sprintf(p, "Battery Voltage:         unknown\n");
+	}
+	else {
+		p += sprintf(p, "Battery Voltage:         %d mV\n",
+			battery_status->present_voltage);
+	}
+
+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;
+
+	acpi_os_free(battery_status);
+
+	return(len);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	bt_osl_add_device
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bt_osl_add_device(
+	BT_CONTEXT		*battery)
+{
+	struct proc_dir_entry	*proc_entry = NULL;
+
+	if (!battery) {
+		return(AE_BAD_PARAMETER);
+	}
+
+	if (battery->is_present) {
+		printk("Battery: socket found, battery present\n");
+	}
+	else {
+		printk("Battery: socket found, battery absent\n");
+	}
+
+	proc_entry = proc_mkdir(battery->uid, bt_proc_root);
+	if (!proc_entry) {
+		return(AE_ERROR);
+	}
+
+	create_proc_read_entry(BT_PROC_STATUS, S_IFREG | S_IRUGO, 
+		proc_entry, bt_osl_proc_read_status, (void*)battery);
+
+	create_proc_read_entry(BT_PROC_INFO, S_IFREG | S_IRUGO, 
+		proc_entry, bt_osl_proc_read_info, (void*)battery);
+
+	return(AE_OK);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	bt_osl_remove_device
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bt_osl_remove_device (
+	BT_CONTEXT		*battery)
+{
+	char			proc_entry[64];
+
+	if (!battery) {
+		return(AE_BAD_PARAMETER);
+	}
+
+	sprintf(proc_entry, "%s/%s", battery->uid, BT_PROC_INFO);
+	remove_proc_entry(proc_entry, bt_proc_root);
+
+	sprintf(proc_entry, "%s/%s", battery->uid, BT_PROC_STATUS);
+	remove_proc_entry(proc_entry, bt_proc_root);
+
+	sprintf(proc_entry, "%s", battery->uid);
+	remove_proc_entry(proc_entry, bt_proc_root);
+
+	return(AE_OK);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	bt_osl_generate_event
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bt_osl_generate_event (
+	u32			event,
+	BT_CONTEXT		*battery)
+{
+	ACPI_STATUS		status = AE_OK;
+
+	if (!battery) {
+		return(AE_BAD_PARAMETER);
+	}
+
+	switch (event) {
+
+	case BT_NOTIFY_STATUS_CHANGE:
+	case BT_NOTIFY_INFORMATION_CHANGE:
+		status = bm_osl_generate_event(battery->device_handle, 
+			BT_PROC_ROOT, battery->uid, event, 0);
+		break;
+
+	default:
+		return(AE_BAD_PARAMETER);
+		break;
+	}
+
+	return(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	bt_osl_init
+ *
+ * PARAMETERS:	<none>
+ *
+ * RETURN:	0: Success
+ *
+ * DESCRIPTION: Module initialization.
+ *
+ ****************************************************************************/
+
+static int __init 
+bt_osl_init (void)
+{
+	ACPI_STATUS		status = AE_OK;
+
+	bt_proc_root = proc_mkdir(BT_PROC_ROOT, bm_proc_root);
+	if (!bt_proc_root) {
+		status = AE_ERROR;
+	}
+	else {
+		status = bt_initialize();
+		if (ACPI_FAILURE(status)) {
+			remove_proc_entry(BT_PROC_ROOT, bm_proc_root);
+		}
+	}
+
+	return (ACPI_SUCCESS(status)) ? 0 : -ENODEV;
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	bt_osl_cleanup
+ *
+ * PARAMETERS:	<none>
+ *
+ * RETURN:	<none>
+ *
+ * DESCRIPTION: Module cleanup.
+ *
+ ****************************************************************************/
+
+static void __exit 
+bt_osl_cleanup (void)
+{
+	bt_terminate();
+
+	if (bt_proc_root) {
+		remove_proc_entry(BT_PROC_ROOT, bm_proc_root);
+	}
+
+	return;
+}
+
+
+module_init(bt_osl_init);
+module_exit(bt_osl_cleanup);