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