patch-2.4.6 linux/drivers/acpi/cmbatt.c

• Lines: 391
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.5/linux/drivers/acpi/cmbatt.c
• Orig date: Fri Feb 9 11:45:58 2001

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/cmbatt.c linux/drivers/acpi/cmbatt.c
@@ -1,390 +0,0 @@
-/*
- *  cmbatt.c - Control Method Battery driver
- *
- *  Copyright (C) 2000 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
- * Pavel Machek <pavel@suse.cz> 2001-1-31
- * - fixed oops on NULLs in return from _BIF
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/proc_fs.h>
-#include "acpi.h"
-#include "driver.h"
-
-#define _COMPONENT	OS_DEPENDENT
-	MODULE_NAME	("cmbatt")
-
-/* ACPI-specific defines */
-#define ACPI_CMBATT_HID		"PNP0C0A"
-#define ACPI_BATT_PRESENT	0x10
-#define ACPI_BATT_UNKNOWN	0xFFFFFFFF
-
-/* driver-specific defines */
-#define MAX_CM_BATTERIES	0x8
-#define MAX_BATT_STRLEN		0x20
-
-#define Xstrncpy(a, b, c) if (b) strncpy(a,b,c); else strncpy(a, "unknown", c)
-
-struct cmbatt_info
-{
-	u32  power_unit;
-	u32  design_capacity;
-	u32  last_full_capacity;
-	u32  battery_technology;
-	u32  design_voltage;
-	u32  design_capacity_warning;
-	u32  design_capacity_low;
-	u32  battery_capacity_granularity_1;
-	u32  battery_capacity_granularity_2;
-
-	char model_number[MAX_BATT_STRLEN];
-	char serial_number[MAX_BATT_STRLEN];
-	char battery_type[MAX_BATT_STRLEN];
-	char oem_info[MAX_BATT_STRLEN];
-};
-
-struct cmbatt_context
-{
-	u32			is_present;
-	ACPI_HANDLE		handle;
-	char			UID[9];
-	char			*power_unit;
-	struct cmbatt_info	info;
-};
-
-struct cmbatt_status
-{
-	u32			state;
-	u32			present_rate;
-	u32			remaining_capacity;
-	u32			present_voltage;
-};
-
-static u32 batt_count = 0;
-
-static struct cmbatt_context batt_list[MAX_CM_BATTERIES];
-
-static ACPI_STATUS
-acpi_get_battery_status(ACPI_HANDLE handle, struct cmbatt_status *result)
-{
-	ACPI_OBJECT       *obj;
-	ACPI_OBJECT       *objs;
-	ACPI_BUFFER       buf;
-
-	buf.length = 0;
-	buf.pointer = NULL;		
-
-	/* determine buffer length needed */
-	if (acpi_evaluate_object(handle, "_BST", NULL, &buf) != AE_BUFFER_OVERFLOW) {
-		printk(KERN_ERR "Cmbatt: Could not get battery status struct length\n");
-		return AE_NOT_FOUND;
-	}
-
-	buf.pointer = kmalloc(buf.length, GFP_KERNEL);
-	if (!buf.pointer)
-		return AE_NO_MEMORY;
-
-	/* get the data */
-	if (!ACPI_SUCCESS(acpi_evaluate_object(handle, "_BST", NULL, &buf))) {
-		printk(KERN_ERR "Cmbatt: Could not get battery status\n");
-		kfree (buf.pointer);
-		return AE_NOT_FOUND;
-	}
-
-	obj = (ACPI_OBJECT *) buf.pointer;
-	objs = obj->package.elements;
-
-	result->state = objs[0].integer.value;
-	result->present_rate = objs[1].integer.value;
-	result->remaining_capacity = objs[2].integer.value;
-	result->present_voltage = objs[3].integer.value;
-
-	kfree(buf.pointer);
-
-	return AE_OK;
-}
-
-static ACPI_STATUS
-acpi_get_battery_info(ACPI_HANDLE handle, struct cmbatt_info *result)
-{
-	ACPI_OBJECT       *obj;
-	ACPI_OBJECT       *objs;
-	ACPI_BUFFER       buf;
-
-	buf.length = 0;
-	buf.pointer = NULL;
-
-	/* determine the length of the data */
-	if (acpi_evaluate_object(handle, "_BIF", NULL, &buf) != AE_BUFFER_OVERFLOW) {
-		printk(KERN_ERR "Cmbatt: Could not get battery info struct length\n");
-		return AE_NOT_FOUND;
-	}
-
-	buf.pointer = kmalloc(buf.length, GFP_KERNEL);
-	if (!buf.pointer)
-		return AE_NO_MEMORY;
-
-	/* get the data */
-	if (!ACPI_SUCCESS(acpi_evaluate_object(handle, "_BIF", NULL, &buf))) {
-		printk(KERN_ERR "Cmbatt: Could not get battery info\n");
-		kfree (buf.pointer);
-		return AE_NOT_FOUND;
-	}
-	
-	obj = (ACPI_OBJECT *) buf.pointer;
-	objs = obj->package.elements;
-	
-	result->power_unit=objs[0].integer.value;
-	result->design_capacity=objs[1].integer.value;
-	result->last_full_capacity=objs[2].integer.value;
-	result->battery_technology=objs[3].integer.value;
-	result->design_voltage=objs[4].integer.value;
-	result->design_capacity_warning=objs[5].integer.value;
-	result->design_capacity_low=objs[6].integer.value;
-	result->battery_capacity_granularity_1=objs[7].integer.value;
-	result->battery_capacity_granularity_2=objs[8].integer.value;
-
- 	/* BUG: trailing NULL issue */
-	Xstrncpy(result->model_number, objs[9].string.pointer, MAX_BATT_STRLEN-1);
-	Xstrncpy(result->serial_number, objs[10].string.pointer, MAX_BATT_STRLEN-1);
-	Xstrncpy(result->battery_type, objs[11].string.pointer, MAX_BATT_STRLEN-1);
-	Xstrncpy(result->oem_info, objs[12].string.pointer, MAX_BATT_STRLEN-1);
-	
-	kfree(buf.pointer);
-
-	return AE_OK;
-}
-
-/*
- * We found a device with the correct HID
- */
-static ACPI_STATUS
-acpi_found_cmbatt(ACPI_HANDLE handle, u32 level, void *ctx, void **value)
-{
-	ACPI_DEVICE_INFO	info;
-
-	if (batt_count >= MAX_CM_BATTERIES) {
-		printk(KERN_ERR "Cmbatt: MAX_CM_BATTERIES exceeded\n");
-		return AE_OK;
-	}
-
-	if (!ACPI_SUCCESS(acpi_get_object_info(handle, &info))) {
-		printk(KERN_ERR "Cmbatt: Could not get battery object info\n");
-		return (AE_OK);
-	}
-
-	if (info.valid & ACPI_VALID_UID) {
-		strncpy(batt_list[batt_count].UID, info.unique_id, 9);
-	}
-	else if (batt_count > 1) {
-		printk(KERN_WARNING "Cmbatt: No UID but more than 1 battery\n");
-	}
-	
-	if (!(info.valid & ACPI_VALID_STA)) {
-		printk(KERN_ERR "Cmbatt: Battery _STA invalid\n");
-		return AE_OK;
-	}
-
-	if (!(info.current_status & ACPI_BATT_PRESENT)) {
-		printk(KERN_INFO "Cmbatt: Battery socket %d empty\n", batt_count);
-		batt_list[batt_count].is_present = FALSE;
-	}
-	else {
-		printk(KERN_INFO "Cmbatt: Battery socket %d occupied\n", batt_count);
-		batt_list[batt_count].is_present = TRUE;
-		if (acpi_get_battery_info(handle, &batt_list[batt_count].info) != AE_OK) {
-			printk(KERN_ERR "acpi_get_battery_info failed\n");
-			return AE_OK;
-		}
-
-		batt_list[batt_count].power_unit = (batt_list[batt_count].info.power_unit) ? "mA" : "mW";
-	}
-	
-	batt_list[batt_count].handle = handle;
-
-	batt_count++;
-
-	return AE_OK;
-}
-
-static int
-proc_read_batt_info(char *page, char **start, off_t off,
-			int count, int *eof, void *data)
-{
-	struct cmbatt_info *info;
-	u32 batt_num = (u32) data;
-	char *p = page;
-	int len;
-
-	info = &batt_list[batt_num].info;
-
-	/* don't get info more than once for a single proc read */
-	if (off != 0)
-		goto end;
-
-	if (!batt_list[batt_num].is_present) {
-		p += sprintf(p, "battery %d not present\n", batt_num);
-		goto end;
-	}
-
-	if (info->last_full_capacity != ACPI_BATT_UNKNOWN)
-		p += sprintf(p, "Last Full Capacity: %d %sh\n", 
-		     info->last_full_capacity, batt_list[batt_num].power_unit);
-
-	if (info->design_capacity != ACPI_BATT_UNKNOWN)
-		p += sprintf(p, "Design Capacity:    %d %sh\n", 
-		     info->design_capacity, batt_list[batt_num].power_unit);
-	
-	if (info->battery_technology)
-		p += sprintf(p, "Battery Technology: Secondary\n");
-	else
-		p += sprintf(p, "Battery Technology: Primary\n");
-	
-	if (info->design_voltage != ACPI_BATT_UNKNOWN)
-		p += sprintf(p, "Design Voltage:     %d mV\n", 
-		     info->design_voltage);
-	
-	p += sprintf(p, "Design Capacity Warning:    %d %sh\n",
-		info->design_capacity_warning, batt_list[batt_num].power_unit);
-	p += sprintf(p, "Design Capacity Low:        %d %sh\n",
-		info->design_capacity_low, batt_list[batt_num].power_unit);
-	p += sprintf(p, "Battery Capacity Granularity 1: %d\n",
-		info->battery_capacity_granularity_1);
-	p += sprintf(p, "Battery Capacity Granularity 2: %d\n",
-		info->battery_capacity_granularity_2);
-	p += sprintf(p, "Model number; %s\nSerial number: %s\nBattery type: %s\nOEM info: %s\n",
-		info->model_number,info->serial_number,
-		info->battery_type,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;
-	return len;
-}
-
-static int
-proc_read_batt_status(char *page, char **start, off_t off,
-			int count, int *eof, void *data)
-{
-	struct cmbatt_status status;
-	u32 batt_num = (u32) data;
-	char *p = page;
-	int len;
-
-	/* don't get status more than once for a single proc read */
-	if (off != 0)
-		goto end;
-
-	if (!batt_list[batt_num].is_present) {
-		p += sprintf(p, "battery %d not present\n", batt_num);
-		goto end;
-	}
-
-	if (acpi_get_battery_status(batt_list[batt_num].handle, &status) != AE_OK) {
-		printk(KERN_ERR "Cmbatt: acpi_get_battery_status failed\n");
-		goto end;
-	}
-
-	p += sprintf(p, "Battery discharging:        %s\n",
-		     (status.state & 0x1)?"yes":"no");
-	p += sprintf(p, "Battery charging:           %s\n",
-		     (status.state & 0x2)?"yes":"no");
-	p += sprintf(p, "Battery critically low:     %s\n",
-		     (status.state & 0x4)?"yes":"no");
-
-	if (status.present_rate != ACPI_BATT_UNKNOWN)
-		p += sprintf(p, "Battery rate:               %d %s\n",
-			status.present_rate, batt_list[batt_num].power_unit);
-
-	if (status.remaining_capacity != ACPI_BATT_UNKNOWN)
-		p += sprintf(p, "Battery capacity:           %d %sh\n",
-			status.remaining_capacity, batt_list[batt_num].power_unit);
-
-	if (status.present_voltage != ACPI_BATT_UNKNOWN)
-		p += sprintf(p, "Battery voltage:            %d mV\n",
-			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;
-	return len;
-}
-
-
-
-int
-acpi_cmbatt_init(void)
-{
-	int i;
-
-	acpi_get_devices(ACPI_CMBATT_HID, 
-			acpi_found_cmbatt,
-			NULL,
-			NULL);
-
-	for (i = 0; i < batt_count; i++) {
-
-		char batt_name[20];
-
-		sprintf(batt_name, "power/batt%d_info", i);
-		create_proc_read_entry(batt_name, 0, NULL,
-			proc_read_batt_info, (void *) i);
-
-		sprintf(batt_name, "power/batt%d_status", i);
-		create_proc_read_entry(batt_name, 0, NULL,
-			proc_read_batt_status, (void *) i);
-
-	}
-
-	return 0;
-}
-
-int
-acpi_cmbatt_terminate(void)
-{
-	int i;
-
-	for (i = 0; i < batt_count; i++) {
-
-		char batt_name[20];
-
-		sprintf(batt_name, "power/batt%d_info", i);
-		remove_proc_entry(batt_name, NULL);
-
-		sprintf(batt_name, "power/batt%d_status", i);
-		remove_proc_entry(batt_name, NULL);
-	}
-
-	return 0;
-}