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提交 78490d82 编写于 作者: A Alexey Starikovskiy 提交者： Len Brown
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ACPI: battery: syntax cleanup 

In response to review comments from Andrew Morton
Signed-off-by: NAlexey Starikovskiy <aystarik@gmail.com>
Signed-off-by: NLen Brown <len.brown@intel.com>
上级 6eedeef7
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Showing with 172 addition and 246 deletion
drivers/acpi/battery.c
浏览文件 @ 78490d82
......@@ -43,9 +43,6 @@
#define ACPI_BATTERY_CLASS "battery"
#define ACPI_BATTERY_HID "PNP0C0A"
#define ACPI_BATTERY_DEVICE_NAME "Battery"
#define ACPI_BATTERY_FILE_INFO "info"
#define ACPI_BATTERY_FILE_STATE "state"
#define ACPI_BATTERY_FILE_ALARM "alarm"
#define ACPI_BATTERY_NOTIFY_STATUS 0x80
#define ACPI_BATTERY_NOTIFY_INFO 0x81
#define ACPI_BATTERY_UNITS_WATTS "mW"
......@@ -111,13 +108,18 @@ struct acpi_battery_info {
acpi_string oem_info;
};
enum acpi_battery_files{
ACPI_BATTERY_INFO = 0,
ACPI_BATTERY_STATE,
ACPI_BATTERY_ALARM,
ACPI_BATTERY_NUMFILES,
};
struct acpi_battery_flags {
u8 battery_present_prev;
u8 alarm_present;
u8 init_update;
u8 info_update;
u8 state_update;
u8 alarm_update;
u8 update[ACPI_BATTERY_NUMFILES];
u8 power_unit;
};
......@@ -128,47 +130,37 @@ struct acpi_battery {
struct acpi_buffer bif_data;
struct acpi_buffer bst_data;
unsigned long alarm;
unsigned long info_update_time;
unsigned long state_update_time;
unsigned long alarm_update_time;
unsigned long update_time[ACPI_BATTERY_NUMFILES];
};
#define acpi_battery_present(battery) battery->device->status.battery_present
#define acpi_battery_present_prev(battery) battery->flags.battery_present_prev
#define acpi_battery_alarm_present(battery) battery->flags.alarm_present
#define acpi_battery_init_update_flag(battery) battery->flags.init_update
#define acpi_battery_info_update_flag(battery) battery->flags.info_update
#define acpi_battery_state_update_flag(battery) battery->flags.state_update
#define acpi_battery_alarm_update_flag(battery) battery->flags.alarm_update
#define acpi_battery_power_units(battery) battery->flags.power_unit ? \
ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS
#define acpi_battery_handle(battery) battery->device->handle
#define acpi_battery_inserted(battery) (!acpi_battery_present_prev(battery) & acpi_battery_present(battery))
#define acpi_battery_removed(battery) (acpi_battery_present_prev(battery) & !acpi_battery_present(battery))
#define acpi_battery_bid(battery) acpi_device_bid(battery->device)
#define acpi_battery_status_str(battery) acpi_battery_present(battery) ? "present" : "absent"
/* --------------------------------------------------------------------------
Battery Management
-------------------------------------------------------------------------- */
static void acpi_battery_mutex_lock(struct acpi_battery *battery)
inline int acpi_battery_present(struct acpi_battery *battery)
{
mutex_lock(&battery->mutex);
return battery->device->status.battery_present;
}
inline char *acpi_battery_power_units(struct acpi_battery *battery)
{
if (battery->flags.power_unit)
return ACPI_BATTERY_UNITS_AMPS;
else
return ACPI_BATTERY_UNITS_WATTS;
}
static void acpi_battery_mutex_unlock(struct acpi_battery *battery)
inline acpi_handle acpi_battery_handle(struct acpi_battery *battery)
{
mutex_unlock(&battery->mutex);
return battery->device->handle;
}
/* --------------------------------------------------------------------------
Battery Management
-------------------------------------------------------------------------- */
static void acpi_battery_check_result(struct acpi_battery *battery, int result)
{
if (!battery)
return;
if (result) {
acpi_battery_init_update_flag(battery) = 1;
battery->flags.init_update = 1;
}
}
......@@ -189,9 +181,7 @@ static int acpi_battery_extract_package(struct acpi_battery *battery,
}
if (data_null.length != data->length) {
if (data->pointer) {
kfree(data->pointer);
}
data->pointer = kzalloc(data_null.length, GFP_KERNEL);
if (!data->pointer) {
ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "kzalloc()"));
......@@ -234,12 +224,12 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
struct acpi_buffer *data = NULL;
struct acpi_battery_info *bif = NULL;
battery->info_update_time = get_seconds();
battery->update_time[ACPI_BATTERY_INFO] = get_seconds();
if (!acpi_battery_present(battery))
return 0;
/* Evalute _BIF */
/* Evaluate _BIF */
status =
acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL,
......@@ -263,9 +253,7 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
end:
if (buffer.pointer) {
kfree(buffer.pointer);
}
if (!result) {
bif = data->pointer;
......@@ -286,12 +274,12 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
union acpi_object *package = NULL;
struct acpi_buffer *data = NULL;
battery->state_update_time = get_seconds();
battery->update_time[ACPI_BATTERY_STATE] = get_seconds();
if (!acpi_battery_present(battery))
return 0;
/* Evalute _BST */
/* Evaluate _BST */
status =
acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL,
......@@ -314,16 +302,14 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
goto end;
end:
if (buffer.pointer) {
kfree(buffer.pointer);
}
return result;
}
static int acpi_battery_get_alarm(struct acpi_battery *battery)
{
battery->alarm_update_time = get_seconds();
battery->update_time[ACPI_BATTERY_ALARM] = get_seconds();
return 0;
}
......@@ -335,12 +321,12 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery,
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
battery->alarm_update_time = get_seconds();
battery->update_time[ACPI_BATTERY_ALARM] = get_seconds();
if (!acpi_battery_present(battery))
return -ENODEV;
if (!acpi_battery_alarm_present(battery))
if (!battery->flags.alarm_present)
return -ENODEV;
arg0.integer.value = alarm;
......@@ -370,7 +356,7 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
status = acpi_get_handle(acpi_battery_handle(battery), "_BTP", &handle);
if (ACPI_SUCCESS(status)) {
acpi_battery_alarm_present(battery) = 1;
battery->flags.alarm_present = 1;
if (!alarm && bif) {
alarm = bif->design_capacity_warning;
}
......@@ -378,7 +364,7 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
if (result)
goto end;
} else {
acpi_battery_alarm_present(battery) = 0;
battery->flags.alarm_present = 0;
}
end:
......@@ -394,7 +380,7 @@ static int acpi_battery_init_update(struct acpi_battery *battery)
if (result)
return result;
acpi_battery_present_prev(battery) = acpi_battery_present(battery);
battery->flags.battery_present_prev = acpi_battery_present(battery);
if (acpi_battery_present(battery)) {
result = acpi_battery_get_info(battery);
......@@ -420,20 +406,20 @@ static int acpi_battery_update(struct acpi_battery *battery,
update = 1;
}
if (acpi_battery_init_update_flag(battery)) {
if (battery->flags.init_update) {
result = acpi_battery_init_update(battery);
if (result)
goto end;;
goto end;
update_result = ACPI_BATTERY_INIT_UPDATE;
} else if (update) {
result = acpi_battery_get_status(battery);
if (result)
goto end;;
if (acpi_battery_inserted(battery)
|| acpi_battery_removed(battery)) {
goto end;
if ((!battery->flags.battery_present_prev & acpi_battery_present(battery))
|| (battery->flags.battery_present_prev & !acpi_battery_present(battery))) {
result = acpi_battery_init_update(battery);
if (result)
goto end;;
goto end;
update_result = ACPI_BATTERY_INIT_UPDATE;
} else {
update_result = ACPI_BATTERY_EASY_UPDATE;
......@@ -442,7 +428,7 @@ static int acpi_battery_update(struct acpi_battery *battery,
end:
acpi_battery_init_update_flag(battery) = (result != 0);
battery->flags.init_update = (result != 0);
*update_result_ptr = update_result;
......@@ -453,16 +439,19 @@ static void acpi_battery_notify_update(struct acpi_battery *battery)
{
acpi_battery_get_status(battery);
if (acpi_battery_init_update_flag(battery)) {
if (battery->flags.init_update) {
return;
}
if (acpi_battery_inserted(battery) || acpi_battery_removed(battery)) {
acpi_battery_init_update_flag(battery) = 1;
if ((!battery->flags.battery_present_prev &
acpi_battery_present(battery)) ||
(battery->flags.battery_present_prev &
!acpi_battery_present(battery))) {
battery->flags.init_update = 1;
} else {
acpi_battery_info_update_flag(battery) = 1;
acpi_battery_state_update_flag(battery) = 1;
acpi_battery_alarm_update_flag(battery) = 1;
battery->flags.update[ACPI_BATTERY_INFO] = 1;
battery->flags.update[ACPI_BATTERY_STATE] = 1;
battery->flags.update[ACPI_BATTERY_ALARM] = 1;
}
}
......@@ -472,7 +461,7 @@ static void acpi_battery_notify_update(struct acpi_battery *battery)
static struct proc_dir_entry *acpi_battery_dir;
static int acpi_battery_read_info_print(struct seq_file *seq, int result)
static int acpi_battery_print_info(struct seq_file *seq, int result)
{
struct acpi_battery *battery = seq->private;
struct acpi_battery_info *bif = NULL;
......@@ -549,49 +538,7 @@ static int acpi_battery_read_info_print(struct seq_file *seq, int result)
return result;
}
static int acpi_battery_read_info(struct seq_file *seq, void *offset)
{
struct acpi_battery *battery = seq->private;
int result = 0;
int update_result = ACPI_BATTERY_NONE_UPDATE;
int update = 0;
acpi_battery_mutex_lock(battery);
update = (get_seconds() - battery->info_update_time >= update_time);
update = (update | acpi_battery_info_update_flag(battery));
result = acpi_battery_update(battery, update, &update_result);
if (result)
goto end;
/* Battery Info (_BIF) */
if (update_result == ACPI_BATTERY_EASY_UPDATE) {
result = acpi_battery_get_info(battery);
if (result)
goto end;
}
end:
result = acpi_battery_read_info_print(seq, result);
acpi_battery_check_result(battery, result);
acpi_battery_info_update_flag(battery) = result;
acpi_battery_mutex_unlock(battery);
return result;
}
static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_battery_read_info, PDE(inode)->data);
}
static int acpi_battery_read_state_print(struct seq_file *seq, int result)
static int acpi_battery_print_state(struct seq_file *seq, int result)
{
struct acpi_battery *battery = seq->private;
struct acpi_battery_state *bst = NULL;
......@@ -661,49 +608,7 @@ static int acpi_battery_read_state_print(struct seq_file *seq, int result)
return result;
}
static int acpi_battery_read_state(struct seq_file *seq, void *offset)
{
struct acpi_battery *battery = seq->private;
int result = 0;
int update_result = ACPI_BATTERY_NONE_UPDATE;
int update = 0;
acpi_battery_mutex_lock(battery);
update = (get_seconds() - battery->state_update_time >= update_time);
update = (update | acpi_battery_state_update_flag(battery));
result = acpi_battery_update(battery, update, &update_result);
if (result)
goto end;
/* Battery State (_BST) */
if (update_result == ACPI_BATTERY_EASY_UPDATE) {
result = acpi_battery_get_state(battery);
if (result)
goto end;
}
end:
result = acpi_battery_read_state_print(seq, result);
acpi_battery_check_result(battery, result);
acpi_battery_state_update_flag(battery) = result;
acpi_battery_mutex_unlock(battery);
return result;
}
static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_battery_read_state, PDE(inode)->data);
}
static int acpi_battery_read_alarm_print(struct seq_file *seq, int result)
static int acpi_battery_print_alarm(struct seq_file *seq, int result)
{
struct acpi_battery *battery = seq->private;
char *units = "?";
......@@ -734,43 +639,6 @@ static int acpi_battery_read_alarm_print(struct seq_file *seq, int result)
return result;
}
static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
{
struct acpi_battery *battery = seq->private;
int result = 0;
int update_result = ACPI_BATTERY_NONE_UPDATE;
int update = 0;
acpi_battery_mutex_lock(battery);
update = (get_seconds() - battery->alarm_update_time >= update_time);
update = (update | acpi_battery_alarm_update_flag(battery));
result = acpi_battery_update(battery, update, &update_result);
if (result)
goto end;
/* Battery Alarm */
if (update_result == ACPI_BATTERY_EASY_UPDATE) {
result = acpi_battery_get_alarm(battery);
if (result)
goto end;
}
end:
result = acpi_battery_read_alarm_print(seq, result);
acpi_battery_check_result(battery, result);
acpi_battery_alarm_update_flag(battery) = result;
acpi_battery_mutex_unlock(battery);
return result;
}
static ssize_t
acpi_battery_write_alarm(struct file *file,
const char __user * buffer,
......@@ -785,7 +653,7 @@ acpi_battery_write_alarm(struct file *file,
if (!battery || (count > sizeof(alarm_string) - 1))
return -EINVAL;
acpi_battery_mutex_lock(battery);
mutex_lock(&battery->mutex);
result = acpi_battery_update(battery, 1, &update_result);
if (result) {
......@@ -817,44 +685,128 @@ acpi_battery_write_alarm(struct file *file,
if (!result)
result = count;
acpi_battery_mutex_unlock(battery);
mutex_unlock(&battery->mutex);
return result;
}
typedef int(*print_func)(struct seq_file *seq, int result);
typedef int(*get_func)(struct acpi_battery *battery);
static struct acpi_read_mux {
print_func print;
get_func get;
} acpi_read_funcs[ACPI_BATTERY_NUMFILES] = {
{.get = acpi_battery_get_info, .print = acpi_battery_print_info},
{.get = acpi_battery_get_state, .print = acpi_battery_print_state},
{.get = acpi_battery_get_alarm, .print = acpi_battery_print_alarm},
};
static int acpi_battery_read(int fid, struct seq_file *seq)
{
struct acpi_battery *battery = seq->private;
int result = 0;
int update_result = ACPI_BATTERY_NONE_UPDATE;
int update = 0;
mutex_lock(&battery->mutex);
update = (get_seconds() - battery->update_time[fid] >= update_time);
update = (update | battery->flags.update[fid]);
result = acpi_battery_update(battery, update, &update_result);
if (result)
goto end;
if (update_result == ACPI_BATTERY_EASY_UPDATE) {
result = acpi_read_funcs[fid].get(battery);
if (result)
goto end;
}
end:
result = acpi_read_funcs[fid].print(seq, result);
acpi_battery_check_result(battery, result);
battery->flags.update[fid] = result;
mutex_unlock(&battery->mutex);
return result;
}
static int acpi_battery_read_info(struct seq_file *seq, void *offset)
{
return acpi_battery_read(ACPI_BATTERY_INFO, seq);
}
static int acpi_battery_read_state(struct seq_file *seq, void *offset)
{
return acpi_battery_read(ACPI_BATTERY_STATE, seq);
}
static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
{
return acpi_battery_read(ACPI_BATTERY_ALARM, seq);
}
static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_battery_read_info, PDE(inode)->data);
}
static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_battery_read_state, PDE(inode)->data);
}
static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
}
static const struct file_operations acpi_battery_info_ops = {
static struct battery_file {
struct file_operations ops;
mode_t mode;
char *name;
} acpi_battery_file[] = {
{
.name = "info",
.mode = S_IRUGO,
.ops = {
.open = acpi_battery_info_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static const struct file_operations acpi_battery_state_ops = {
},
},
{
.name = "state",
.mode = S_IRUGO,
.ops = {
.open = acpi_battery_state_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static const struct file_operations acpi_battery_alarm_ops = {
},
},
{
.name = "alarm",
.mode = S_IFREG | S_IRUGO | S_IWUSR,
.ops = {
.open = acpi_battery_alarm_open_fs,
.read = seq_read,
.write = acpi_battery_write_alarm,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
},
},
};
static int acpi_battery_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
int i;
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
......@@ -864,38 +816,16 @@ static int acpi_battery_add_fs(struct acpi_device *device)
acpi_device_dir(device)->owner = THIS_MODULE;
}
/* 'info' [R] */
entry = create_proc_entry(ACPI_BATTERY_FILE_INFO,
S_IRUGO, acpi_device_dir(device));
for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) {
entry = create_proc_entry(acpi_battery_file[i].name,
acpi_battery_file[i].mode, acpi_device_dir(device));
if (!entry)
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_info_ops;
entry->proc_fops = &acpi_battery_file[i].ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
/* 'status' [R] */
entry = create_proc_entry(ACPI_BATTERY_FILE_STATE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_state_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
/* 'alarm' [R/W] */
entry = create_proc_entry(ACPI_BATTERY_FILE_ALARM,
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_alarm_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return 0;
......@@ -903,14 +833,12 @@ static int acpi_battery_add_fs(struct acpi_device *device)
static int acpi_battery_remove_fs(struct acpi_device *device)
{
int i;
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_BATTERY_FILE_ALARM,
acpi_device_dir(device));
remove_proc_entry(ACPI_BATTERY_FILE_STATE,
acpi_device_dir(device));
remove_proc_entry(ACPI_BATTERY_FILE_INFO,
for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) {
remove_proc_entry(acpi_battery_file[i].name,
acpi_device_dir(device));
}
remove_proc_entry(acpi_device_bid(device), acpi_battery_dir);
acpi_device_dir(device) = NULL;
}
......@@ -966,7 +894,7 @@ static int acpi_battery_add(struct acpi_device *device)
mutex_init(&battery->mutex);
acpi_battery_mutex_lock(battery);
mutex_lock(&battery->mutex);
battery->device = device;
strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
......@@ -977,7 +905,7 @@ static int acpi_battery_add(struct acpi_device *device)
if (result)
goto end;
acpi_battery_init_update_flag(battery) = 1;
battery->flags.init_update = 1;
result = acpi_battery_add_fs(device);
if (result)
......@@ -1003,7 +931,7 @@ static int acpi_battery_add(struct acpi_device *device)
kfree(battery);
}
acpi_battery_mutex_unlock(battery);
mutex_unlock(&battery->mutex);
return result;
}
......@@ -1018,7 +946,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
battery = acpi_driver_data(device);
acpi_battery_mutex_lock(battery);
mutex_lock(&battery->mutex);
status = acpi_remove_notify_handler(device->handle,
ACPI_ALL_NOTIFY,
......@@ -1026,13 +954,11 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
acpi_battery_remove_fs(device);
if (battery->bif_data.pointer)
kfree(battery->bif_data.pointer);
if (battery->bst_data.pointer)
kfree(battery->bst_data.pointer);
acpi_battery_mutex_unlock(battery);
mutex_unlock(&battery->mutex);
mutex_destroy(&battery->mutex);
......@@ -1051,7 +977,7 @@ static int acpi_battery_resume(struct acpi_device *device)
battery = device->driver_data;
acpi_battery_init_update_flag(battery) = 1;
battery->flags.init_update = 1;
return 0;
}
......
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