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-rw-r--r--drivers/staging/android/Kconfig30
-rw-r--r--drivers/staging/android/Makefile2
-rw-r--r--drivers/staging/android/alarm-dev.c137
-rw-r--r--drivers/staging/android/alarm.c601
-rw-r--r--drivers/staging/android/android_alarm.h59
-rw-r--r--drivers/staging/android/binder.h10
-rw-r--r--drivers/staging/android/logger.c113
-rw-r--r--drivers/staging/android/persistent_ram.c473
-rw-r--r--drivers/staging/android/persistent_ram.h78
-rw-r--r--drivers/staging/android/ram_console.c2
-rw-r--r--drivers/staging/android/timed_output.c1
11 files changed, 181 insertions, 1325 deletions
diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig
index c706635f3f82..0e16b594460f 100644
--- a/drivers/staging/android/Kconfig
+++ b/drivers/staging/android/Kconfig
@@ -25,17 +25,9 @@ config ANDROID_LOGGER
tristate "Android log driver"
default n
-config ANDROID_PERSISTENT_RAM
- bool
- depends on HAVE_MEMBLOCK
- select REED_SOLOMON
- select REED_SOLOMON_ENC8
- select REED_SOLOMON_DEC8
-
config ANDROID_RAM_CONSOLE
bool "Android RAM buffer console"
- depends on !S390 && !UML && HAVE_MEMBLOCK
- select ANDROID_PERSISTENT_RAM
+ depends on !S390 && !UML && HAVE_MEMBLOCK && PSTORE_RAM=y
default n
config ANDROID_TIMED_OUTPUT
@@ -53,31 +45,15 @@ config ANDROID_LOW_MEMORY_KILLER
---help---
Register processes to be killed when memory is low
-config ANDROID_INTF_ALARM
+config ANDROID_INTF_ALARM_DEV
bool "Android alarm driver"
depends on RTC_CLASS
default n
help
Provides non-wakeup and rtc backed wakeup alarms based on rtc or
elapsed realtime, and a non-wakeup alarm on the monotonic clock.
- Also provides an interface to set the wall time which must be used
- for elapsed realtime to work.
-
-config ANDROID_INTF_ALARM_DEV
- bool "Android alarm device"
- depends on ANDROID_INTF_ALARM
- default y
- help
- Exports the alarm interface to user-space.
+ Also exports the alarm interface to user-space.
-config ANDROID_ALARM_OLDDRV_COMPAT
- bool "Android Alarm compatability with old drivers"
- depends on ANDROID_INTF_ALARM
- default n
- help
- Provides preprocessor alias to aid compatability with
- older out-of-tree drivers that use the Android Alarm
- in-kernel API. This will be removed eventually.
endif # if ANDROID
endmenu
diff --git a/drivers/staging/android/Makefile b/drivers/staging/android/Makefile
index 045d17bde524..98711e2b2afa 100644
--- a/drivers/staging/android/Makefile
+++ b/drivers/staging/android/Makefile
@@ -1,10 +1,8 @@
obj-$(CONFIG_ANDROID_BINDER_IPC) += binder.o
obj-$(CONFIG_ASHMEM) += ashmem.o
obj-$(CONFIG_ANDROID_LOGGER) += logger.o
-obj-$(CONFIG_ANDROID_PERSISTENT_RAM) += persistent_ram.o
obj-$(CONFIG_ANDROID_RAM_CONSOLE) += ram_console.o
obj-$(CONFIG_ANDROID_TIMED_OUTPUT) += timed_output.o
obj-$(CONFIG_ANDROID_TIMED_GPIO) += timed_gpio.o
obj-$(CONFIG_ANDROID_LOW_MEMORY_KILLER) += lowmemorykiller.o
-obj-$(CONFIG_ANDROID_INTF_ALARM) += alarm.o
obj-$(CONFIG_ANDROID_INTF_ALARM_DEV) += alarm-dev.o
diff --git a/drivers/staging/android/alarm-dev.c b/drivers/staging/android/alarm-dev.c
index 03efb34cbe2e..53ce6ecf390a 100644
--- a/drivers/staging/android/alarm-dev.c
+++ b/drivers/staging/android/alarm-dev.c
@@ -22,19 +22,9 @@
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
+#include <linux/alarmtimer.h>
#include "android_alarm.h"
-/* XXX - Hack out wakelocks, while they are out of tree */
-struct wake_lock {
- int i;
-};
-#define wake_lock(x)
-#define wake_lock_timeout(x, y)
-#define wake_unlock(x)
-#define WAKE_LOCK_SUSPEND 0
-#define wake_lock_init(x, y, z) ((x)->i = 1)
-#define wake_lock_destroy(x)
-
#define ANDROID_ALARM_PRINT_INFO (1U << 0)
#define ANDROID_ALARM_PRINT_IO (1U << 1)
#define ANDROID_ALARM_PRINT_INT (1U << 2)
@@ -54,19 +44,65 @@ module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP);
ANDROID_ALARM_RTC_WAKEUP_MASK | \
ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK)
-/* support old usespace code */
+/* support old userspace code */
#define ANDROID_ALARM_SET_OLD _IOW('a', 2, time_t) /* set alarm */
#define ANDROID_ALARM_SET_AND_WAIT_OLD _IOW('a', 3, time_t)
static int alarm_opened;
static DEFINE_SPINLOCK(alarm_slock);
-static struct wake_lock alarm_wake_lock;
+static struct wakeup_source alarm_wake_lock;
static DECLARE_WAIT_QUEUE_HEAD(alarm_wait_queue);
static uint32_t alarm_pending;
static uint32_t alarm_enabled;
static uint32_t wait_pending;
-static struct android_alarm alarms[ANDROID_ALARM_TYPE_COUNT];
+struct devalarm {
+ union {
+ struct hrtimer hrt;
+ struct alarm alrm;
+ } u;
+ enum android_alarm_type type;
+};
+
+static struct devalarm alarms[ANDROID_ALARM_TYPE_COUNT];
+
+
+static int is_wakeup(enum android_alarm_type type)
+{
+ if (type == ANDROID_ALARM_RTC_WAKEUP ||
+ type == ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP)
+ return 1;
+ return 0;
+}
+
+
+static void devalarm_start(struct devalarm *alrm, ktime_t exp)
+{
+ if (is_wakeup(alrm->type))
+ alarm_start(&alrm->u.alrm, exp);
+ else
+ hrtimer_start(&alrm->u.hrt, exp, HRTIMER_MODE_ABS);
+}
+
+
+static int devalarm_try_to_cancel(struct devalarm *alrm)
+{
+ int ret;
+ if (is_wakeup(alrm->type))
+ ret = alarm_try_to_cancel(&alrm->u.alrm);
+ else
+ ret = hrtimer_try_to_cancel(&alrm->u.hrt);
+ return ret;
+}
+
+static void devalarm_cancel(struct devalarm *alrm)
+{
+ if (is_wakeup(alrm->type))
+ alarm_cancel(&alrm->u.alrm);
+ else
+ hrtimer_cancel(&alrm->u.hrt);
+}
+
static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
@@ -75,6 +111,8 @@ static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
struct timespec new_alarm_time;
struct timespec new_rtc_time;
struct timespec tmp_time;
+ struct rtc_time new_rtc_tm;
+ struct rtc_device *rtc_dev;
enum android_alarm_type alarm_type = ANDROID_ALARM_IOCTL_TO_TYPE(cmd);
uint32_t alarm_type_mask = 1U << alarm_type;
@@ -101,11 +139,11 @@ static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case ANDROID_ALARM_CLEAR(0):
spin_lock_irqsave(&alarm_slock, flags);
pr_alarm(IO, "alarm %d clear\n", alarm_type);
- android_alarm_try_to_cancel(&alarms[alarm_type]);
+ devalarm_try_to_cancel(&alarms[alarm_type]);
if (alarm_pending) {
alarm_pending &= ~alarm_type_mask;
if (!alarm_pending && !wait_pending)
- wake_unlock(&alarm_wake_lock);
+ __pm_relax(&alarm_wake_lock);
}
alarm_enabled &= ~alarm_type_mask;
spin_unlock_irqrestore(&alarm_slock, flags);
@@ -132,8 +170,7 @@ from_old_alarm_set:
pr_alarm(IO, "alarm %d set %ld.%09ld\n", alarm_type,
new_alarm_time.tv_sec, new_alarm_time.tv_nsec);
alarm_enabled |= alarm_type_mask;
- android_alarm_start_range(&alarms[alarm_type],
- timespec_to_ktime(new_alarm_time),
+ devalarm_start(&alarms[alarm_type],
timespec_to_ktime(new_alarm_time));
spin_unlock_irqrestore(&alarm_slock, flags);
if (ANDROID_ALARM_BASE_CMD(cmd) != ANDROID_ALARM_SET_AND_WAIT(0)
@@ -144,7 +181,7 @@ from_old_alarm_set:
spin_lock_irqsave(&alarm_slock, flags);
pr_alarm(IO, "alarm wait\n");
if (!alarm_pending && wait_pending) {
- wake_unlock(&alarm_wake_lock);
+ __pm_relax(&alarm_wake_lock);
wait_pending = 0;
}
spin_unlock_irqrestore(&alarm_slock, flags);
@@ -163,7 +200,13 @@ from_old_alarm_set:
rv = -EFAULT;
goto err1;
}
- rv = android_alarm_set_rtc(new_rtc_time);
+ rtc_time_to_tm(new_rtc_time.tv_sec, &new_rtc_tm);
+ rtc_dev = alarmtimer_get_rtcdev();
+ rv = do_settimeofday(&new_rtc_time);
+ if (rv < 0)
+ goto err1;
+ if (rtc_dev)
+ rv = rtc_set_time(rtc_dev, &new_rtc_tm);
spin_lock_irqsave(&alarm_slock, flags);
alarm_pending |= ANDROID_ALARM_TIME_CHANGE_MASK;
wake_up(&alarm_wait_queue);
@@ -179,8 +222,7 @@ from_old_alarm_set:
break;
case ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP:
case ANDROID_ALARM_ELAPSED_REALTIME:
- tmp_time =
- ktime_to_timespec(alarm_get_elapsed_realtime());
+ get_monotonic_boottime(&tmp_time);
break;
case ANDROID_ALARM_TYPE_COUNT:
case ANDROID_ALARM_SYSTEMTIME:
@@ -224,14 +266,14 @@ static int alarm_release(struct inode *inode, struct file *file)
alarm_enabled &= ~alarm_type_mask;
}
spin_unlock_irqrestore(&alarm_slock, flags);
- android_alarm_cancel(&alarms[i]);
+ devalarm_cancel(&alarms[i]);
spin_lock_irqsave(&alarm_slock, flags);
}
if (alarm_pending | wait_pending) {
if (alarm_pending)
pr_alarm(INFO, "alarm_release: clear "
"pending alarms %x\n", alarm_pending);
- wake_unlock(&alarm_wake_lock);
+ __pm_relax(&alarm_wake_lock);
wait_pending = 0;
alarm_pending = 0;
}
@@ -241,15 +283,15 @@ static int alarm_release(struct inode *inode, struct file *file)
return 0;
}
-static void alarm_triggered(struct android_alarm *alarm)
+static void devalarm_triggered(struct devalarm *alarm)
{
unsigned long flags;
uint32_t alarm_type_mask = 1U << alarm->type;
- pr_alarm(INT, "alarm_triggered type %d\n", alarm->type);
+ pr_alarm(INT, "devalarm_triggered type %d\n", alarm->type);
spin_lock_irqsave(&alarm_slock, flags);
if (alarm_enabled & alarm_type_mask) {
- wake_lock_timeout(&alarm_wake_lock, 5 * HZ);
+ __pm_wakeup_event(&alarm_wake_lock, 5000); /* 5secs */
alarm_enabled &= ~alarm_type_mask;
alarm_pending |= alarm_type_mask;
wake_up(&alarm_wait_queue);
@@ -257,6 +299,25 @@ static void alarm_triggered(struct android_alarm *alarm)
spin_unlock_irqrestore(&alarm_slock, flags);
}
+
+static enum hrtimer_restart devalarm_hrthandler(struct hrtimer *hrt)
+{
+ struct devalarm *devalrm = container_of(hrt, struct devalarm, u.hrt);
+
+ devalarm_triggered(devalrm);
+ return HRTIMER_NORESTART;
+}
+
+static enum alarmtimer_restart devalarm_alarmhandler(struct alarm *alrm,
+ ktime_t now)
+{
+ struct devalarm *devalrm = container_of(alrm, struct devalarm, u.alrm);
+
+ devalarm_triggered(devalrm);
+ return ALARMTIMER_NORESTART;
+}
+
+
static const struct file_operations alarm_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = alarm_ioctl,
@@ -279,17 +340,31 @@ static int __init alarm_dev_init(void)
if (err)
return err;
- for (i = 0; i < ANDROID_ALARM_TYPE_COUNT; i++)
- android_alarm_init(&alarms[i], i, alarm_triggered);
- wake_lock_init(&alarm_wake_lock, WAKE_LOCK_SUSPEND, "alarm");
+ alarm_init(&alarms[ANDROID_ALARM_RTC_WAKEUP].u.alrm,
+ ALARM_REALTIME, devalarm_alarmhandler);
+ hrtimer_init(&alarms[ANDROID_ALARM_RTC].u.hrt,
+ CLOCK_REALTIME, HRTIMER_MODE_ABS);
+ alarm_init(&alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].u.alrm,
+ ALARM_BOOTTIME, devalarm_alarmhandler);
+ hrtimer_init(&alarms[ANDROID_ALARM_ELAPSED_REALTIME].u.hrt,
+ CLOCK_BOOTTIME, HRTIMER_MODE_ABS);
+ hrtimer_init(&alarms[ANDROID_ALARM_SYSTEMTIME].u.hrt,
+ CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+
+ for (i = 0; i < ANDROID_ALARM_TYPE_COUNT; i++) {
+ alarms[i].type = i;
+ if (!is_wakeup(i))
+ alarms[i].u.hrt.function = devalarm_hrthandler;
+ }
+ wakeup_source_init(&alarm_wake_lock, "alarm");
return 0;
}
static void __exit alarm_dev_exit(void)
{
misc_deregister(&alarm_device);
- wake_lock_destroy(&alarm_wake_lock);
+ wakeup_source_trash(&alarm_wake_lock);
}
module_init(alarm_dev_init);
diff --git a/drivers/staging/android/alarm.c b/drivers/staging/android/alarm.c
deleted file mode 100644
index c68950b9e08f..000000000000
--- a/drivers/staging/android/alarm.c
+++ /dev/null
@@ -1,601 +0,0 @@
-/* drivers/rtc/alarm.c
- *
- * Copyright (C) 2007-2009 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/time.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/miscdevice.h>
-#include <linux/platform_device.h>
-#include <linux/rtc.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include "android_alarm.h"
-
-/* XXX - Hack out wakelocks, while they are out of tree */
-struct wake_lock {
- int i;
-};
-#define wake_lock(x)
-#define wake_lock_timeout(x, y)
-#define wake_unlock(x)
-#define WAKE_LOCK_SUSPEND 0
-#define wake_lock_init(x, y, z) ((x)->i = 1)
-#define wake_lock_destroy(x)
-
-#define ANDROID_ALARM_PRINT_ERROR (1U << 0)
-#define ANDROID_ALARM_PRINT_INIT_STATUS (1U << 1)
-#define ANDROID_ALARM_PRINT_TSET (1U << 2)
-#define ANDROID_ALARM_PRINT_CALL (1U << 3)
-#define ANDROID_ALARM_PRINT_SUSPEND (1U << 4)
-#define ANDROID_ALARM_PRINT_INT (1U << 5)
-#define ANDROID_ALARM_PRINT_FLOW (1U << 6)
-
-static int debug_mask = ANDROID_ALARM_PRINT_ERROR | \
- ANDROID_ALARM_PRINT_INIT_STATUS;
-module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP);
-
-#define pr_alarm(debug_level_mask, args...) \
- do { \
- if (debug_mask & ANDROID_ALARM_PRINT_##debug_level_mask) { \
- pr_info(args); \
- } \
- } while (0)
-
-#define ANDROID_ALARM_WAKEUP_MASK ( \
- ANDROID_ALARM_RTC_WAKEUP_MASK | \
- ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK)
-
-/* support old usespace code */
-#define ANDROID_ALARM_SET_OLD _IOW('a', 2, time_t) /* set alarm */
-#define ANDROID_ALARM_SET_AND_WAIT_OLD _IOW('a', 3, time_t)
-
-struct alarm_queue {
- struct rb_root alarms;
- struct rb_node *first;
- struct hrtimer timer;
- ktime_t delta;
- bool stopped;
- ktime_t stopped_time;
-};
-
-static struct rtc_device *alarm_rtc_dev;
-static DEFINE_SPINLOCK(alarm_slock);
-static DEFINE_MUTEX(alarm_setrtc_mutex);
-static struct wake_lock alarm_rtc_wake_lock;
-static struct platform_device *alarm_platform_dev;
-struct alarm_queue alarms[ANDROID_ALARM_TYPE_COUNT];
-static bool suspended;
-
-static void update_timer_locked(struct alarm_queue *base, bool head_removed)
-{
- struct android_alarm *alarm;
- bool is_wakeup = base == &alarms[ANDROID_ALARM_RTC_WAKEUP] ||
- base == &alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP];
-
- if (base->stopped) {
- pr_alarm(FLOW, "changed alarm while setting the wall time\n");
- return;
- }
-
- if (is_wakeup && !suspended && head_removed)
- wake_unlock(&alarm_rtc_wake_lock);
-
- if (!base->first)
- return;
-
- alarm = container_of(base->first, struct android_alarm, node);
-
- pr_alarm(FLOW, "selected alarm, type %d, func %pF at %lld\n",
- alarm->type, alarm->function, ktime_to_ns(alarm->expires));
-
- if (is_wakeup && suspended) {
- pr_alarm(FLOW, "changed alarm while suspened\n");
- wake_lock_timeout(&alarm_rtc_wake_lock, 1 * HZ);
- return;
- }
-
- hrtimer_try_to_cancel(&base->timer);
- base->timer.node.expires = ktime_add(base->delta, alarm->expires);
- base->timer._softexpires = ktime_add(base->delta, alarm->softexpires);
- hrtimer_start_expires(&base->timer, HRTIMER_MODE_ABS);
-}
-
-static void alarm_enqueue_locked(struct android_alarm *alarm)
-{
- struct alarm_queue *base = &alarms[alarm->type];
- struct rb_node **link = &base->alarms.rb_node;
- struct rb_node *parent = NULL;
- struct android_alarm *entry;
- int leftmost = 1;
- bool was_first = false;
-
- pr_alarm(FLOW, "added alarm, type %d, func %pF at %lld\n",
- alarm->type, alarm->function, ktime_to_ns(alarm->expires));
-
- if (base->first == &alarm->node) {
- base->first = rb_next(&alarm->node);
- was_first = true;
- }
- if (!RB_EMPTY_NODE(&alarm->node)) {
- rb_erase(&alarm->node, &base->alarms);
- RB_CLEAR_NODE(&alarm->node);
- }
-
- while (*link) {
- parent = *link;
- entry = rb_entry(parent, struct android_alarm, node);
- /*
- * We dont care about collisions. Nodes with
- * the same expiry time stay together.
- */
- if (alarm->expires.tv64 < entry->expires.tv64) {
- link = &(*link)->rb_left;
- } else {
- link = &(*link)->rb_right;
- leftmost = 0;
- }
- }
- if (leftmost)
- base->first = &alarm->node;
- if (leftmost || was_first)
- update_timer_locked(base, was_first);
-
- rb_link_node(&alarm->node, parent, link);
- rb_insert_color(&alarm->node, &base->alarms);
-}
-
-/**
- * android_alarm_init - initialize an alarm
- * @alarm: the alarm to be initialized
- * @type: the alarm type to be used
- * @function: alarm callback function
- */
-void android_alarm_init(struct android_alarm *alarm,
- enum android_alarm_type type, void (*function)(struct android_alarm *))
-{
- RB_CLEAR_NODE(&alarm->node);
- alarm->type = type;
- alarm->function = function;
-
- pr_alarm(FLOW, "created alarm, type %d, func %pF\n", type, function);
-}
-
-
-/**
- * android_alarm_start_range - (re)start an alarm
- * @alarm: the alarm to be added
- * @start: earliest expiry time
- * @end: expiry time
- */
-void android_alarm_start_range(struct android_alarm *alarm, ktime_t start,
- ktime_t end)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&alarm_slock, flags);
- alarm->softexpires = start;
- alarm->expires = end;
- alarm_enqueue_locked(alarm);
- spin_unlock_irqrestore(&alarm_slock, flags);
-}
-
-/**
- * android_alarm_try_to_cancel - try to deactivate an alarm
- * @alarm: alarm to stop
- *
- * Returns:
- * 0 when the alarm was not active
- * 1 when the alarm was active
- * -1 when the alarm may currently be excuting the callback function and
- * cannot be stopped (it may also be inactive)
- */
-int android_alarm_try_to_cancel(struct android_alarm *alarm)
-{
- struct alarm_queue *base = &alarms[alarm->type];
- unsigned long flags;
- bool first = false;
- int ret = 0;
-
- spin_lock_irqsave(&alarm_slock, flags);
- if (!RB_EMPTY_NODE(&alarm->node)) {
- pr_alarm(FLOW, "canceled alarm, type %d, func %pF at %lld\n",
- alarm->type, alarm->function,
- ktime_to_ns(alarm->expires));
- ret = 1;
- if (base->first == &alarm->node) {
- base->first = rb_next(&alarm->node);
- first = true;
- }
- rb_erase(&alarm->node, &base->alarms);
- RB_CLEAR_NODE(&alarm->node);
- if (first)
- update_timer_locked(base, true);
- } else
- pr_alarm(FLOW, "tried to cancel alarm, type %d, func %pF\n",
- alarm->type, alarm->function);
- spin_unlock_irqrestore(&alarm_slock, flags);
- if (!ret && hrtimer_callback_running(&base->timer))
- ret = -1;
- return ret;
-}
-
-/**
- * android_alarm_cancel - cancel an alarm and wait for the handler to finish.
- * @alarm: the alarm to be cancelled
- *
- * Returns:
- * 0 when the alarm was not active
- * 1 when the alarm was active
- */
-int android_alarm_cancel(struct android_alarm *alarm)
-{
- for (;;) {
- int ret = android_alarm_try_to_cancel(alarm);
- if (ret >= 0)
- return ret;
- cpu_relax();
- }
-}
-
-/**
- * alarm_set_rtc - set the kernel and rtc walltime
- * @new_time: timespec value containing the new time
- */
-int android_alarm_set_rtc(struct timespec new_time)
-{
- int i;
- int ret;
- unsigned long flags;
- struct rtc_time rtc_new_rtc_time;
- struct timespec tmp_time;
-
- rtc_time_to_tm(new_time.tv_sec, &rtc_new_rtc_time);
-
- pr_alarm(TSET, "set rtc %ld %ld - rtc %02d:%02d:%02d %02d/%02d/%04d\n",
- new_time.tv_sec, new_time.tv_nsec,
- rtc_new_rtc_time.tm_hour, rtc_new_rtc_time.tm_min,
- rtc_new_rtc_time.tm_sec, rtc_new_rtc_time.tm_mon + 1,
- rtc_new_rtc_time.tm_mday,
- rtc_new_rtc_time.tm_year + 1900);
-
- mutex_lock(&alarm_setrtc_mutex);
- spin_lock_irqsave(&alarm_slock, flags);
- wake_lock(&alarm_rtc_wake_lock);
- getnstimeofday(&tmp_time);
- for (i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) {
- hrtimer_try_to_cancel(&alarms[i].timer);
- alarms[i].stopped = true;
- alarms[i].stopped_time = timespec_to_ktime(tmp_time);
- }
- alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].delta =
- alarms[ANDROID_ALARM_ELAPSED_REALTIME].delta =
- ktime_sub(alarms[ANDROID_ALARM_ELAPSED_REALTIME].delta,
- timespec_to_ktime(timespec_sub(tmp_time, new_time)));
- spin_unlock_irqrestore(&alarm_slock, flags);
- ret = do_settimeofday(&new_time);
- spin_lock_irqsave(&alarm_slock, flags);
- for (i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) {
- alarms[i].stopped = false;
- update_timer_locked(&alarms[i], false);
- }
- spin_unlock_irqrestore(&alarm_slock, flags);
- if (ret < 0) {
- pr_alarm(ERROR, "alarm_set_rtc: Failed to set time\n");
- goto err;
- }
- if (!alarm_rtc_dev) {
- pr_alarm(ERROR,
- "alarm_set_rtc: no RTC, time will be lost on reboot\n");
- goto err;
- }
- ret = rtc_set_time(alarm_rtc_dev, &rtc_new_rtc_time);
- if (ret < 0)
- pr_alarm(ERROR, "alarm_set_rtc: "
- "Failed to set RTC, time will be lost on reboot\n");
-err:
- wake_unlock(&alarm_rtc_wake_lock);
- mutex_unlock(&alarm_setrtc_mutex);
- return ret;
-}
-
-/**
- * alarm_get_elapsed_realtime - get the elapsed real time in ktime_t format
- *
- * returns the time in ktime_t format
- */
-ktime_t alarm_get_elapsed_realtime(void)
-{
- ktime_t now;
- unsigned long flags;
- struct alarm_queue *base = &alarms[ANDROID_ALARM_ELAPSED_REALTIME];
-
- spin_lock_irqsave(&alarm_slock, flags);
- now = base->stopped ? base->stopped_time : ktime_get_real();
- now = ktime_sub(now, base->delta);
- spin_unlock_irqrestore(&alarm_slock, flags);
- return now;
-}
-
-static enum hrtimer_restart alarm_timer_triggered(struct hrtimer *timer)
-{
- struct alarm_queue *base;
- struct android_alarm *alarm;
- unsigned long flags;
- ktime_t now;
-
- spin_lock_irqsave(&alarm_slock, flags);
-
- base = container_of(timer, struct alarm_queue, timer);
- now = base->stopped ? base->stopped_time : hrtimer_cb_get_time(timer);
- now = ktime_sub(now, base->delta);
-
- pr_alarm(INT, "alarm_timer_triggered type %ld at %lld\n",
- base - alarms, ktime_to_ns(now));
-
- while (base->first) {
- alarm = container_of(base->first, struct android_alarm, node);
- if (alarm->softexpires.tv64 > now.tv64) {
- pr_alarm(FLOW, "don't call alarm, %pF, %lld (s %lld)\n",
- alarm->function, ktime_to_ns(alarm->expires),
- ktime_to_ns(alarm->softexpires));
- break;
- }
- base->first = rb_next(&alarm->node);
- rb_erase(&alarm->node, &base->alarms);
- RB_CLEAR_NODE(&alarm->node);
- pr_alarm(CALL, "call alarm, type %d, func %pF, %lld (s %lld)\n",
- alarm->type, alarm->function,
- ktime_to_ns(alarm->expires),
- ktime_to_ns(alarm->softexpires));
- spin_unlock_irqrestore(&alarm_slock, flags);
- alarm->function(alarm);
- spin_lock_irqsave(&alarm_slock, flags);
- }
- if (!base->first)
- pr_alarm(FLOW, "no more alarms of type %ld\n", base - alarms);
- update_timer_locked(base, true);
- spin_unlock_irqrestore(&alarm_slock, flags);
- return HRTIMER_NORESTART;
-}
-
-static void alarm_triggered_func(void *p)
-{
- struct rtc_device *rtc = alarm_rtc_dev;
- if (!(rtc->irq_data & RTC_AF))
- return;
- pr_alarm(INT, "rtc alarm triggered\n");
- wake_lock_timeout(&alarm_rtc_wake_lock, 1 * HZ);
-}
-
-static int alarm_suspend(struct platform_device *pdev, pm_message_t state)
-{
- int err = 0;
- unsigned long flags;
- struct rtc_wkalrm rtc_alarm;
- struct rtc_time rtc_current_rtc_time;
- unsigned long rtc_current_time;
- unsigned long rtc_alarm_time;
- struct timespec rtc_delta;
- struct timespec wall_time;
- struct alarm_queue *wakeup_queue = NULL;
- struct alarm_queue *tmp_queue = NULL;
-
- pr_alarm(SUSPEND, "alarm_suspend(%p, %d)\n", pdev, state.event);
-
- spin_lock_irqsave(&alarm_slock, flags);
- suspended = true;
- spin_unlock_irqrestore(&alarm_slock, flags);
-
- hrtimer_cancel(&alarms[ANDROID_ALARM_RTC_WAKEUP].timer);
- hrtimer_cancel(&alarms[
- ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].timer);
-
- tmp_queue = &alarms[ANDROID_ALARM_RTC_WAKEUP];
- if (tmp_queue->first)
- wakeup_queue = tmp_queue;
- tmp_queue = &alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP];
- if (tmp_queue->first && (!wakeup_queue ||
- hrtimer_get_expires(&tmp_queue->timer).tv64 <
- hrtimer_get_expires(&wakeup_queue->timer).tv64))
- wakeup_queue = tmp_queue;
- if (wakeup_queue) {
- rtc_read_time(alarm_rtc_dev, &rtc_current_rtc_time);
- getnstimeofday(&wall_time);
- rtc_tm_to_time(&rtc_current_rtc_time, &rtc_current_time);
- set_normalized_timespec(&rtc_delta,
- wall_time.tv_sec - rtc_current_time,
- wall_time.tv_nsec);
-
- rtc_alarm_time = timespec_sub(ktime_to_timespec(
- hrtimer_get_expires(&wakeup_queue->timer)),
- rtc_delta).tv_sec;
-
- rtc_time_to_tm(rtc_alarm_time, &rtc_alarm.time);
- rtc_alarm.enabled = 1;
- rtc_set_alarm(alarm_rtc_dev, &rtc_alarm);
- rtc_read_time(alarm_rtc_dev, &rtc_current_rtc_time);
- rtc_tm_to_time(&rtc_current_rtc_time, &rtc_current_time);
- pr_alarm(SUSPEND,
- "rtc alarm set at %ld, now %ld, rtc delta %ld.%09ld\n",
- rtc_alarm_time, rtc_current_time,
- rtc_delta.tv_sec, rtc_delta.tv_nsec);
- if (rtc_current_time + 1 >= rtc_alarm_time) {
- pr_alarm(SUSPEND, "alarm about to go off\n");
- memset(&rtc_alarm, 0, sizeof(rtc_alarm));
- rtc_alarm.enabled = 0;
- rtc_set_alarm(alarm_rtc_dev, &rtc_alarm);
-
- spin_lock_irqsave(&alarm_slock, flags);
- suspended = false;
- wake_lock_timeout(&alarm_rtc_wake_lock, 2 * HZ);
- update_timer_locked(&alarms[ANDROID_ALARM_RTC_WAKEUP],
- false);
- update_timer_locked(&alarms[
- ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP], false);
- err = -EBUSY;
- spin_unlock_irqrestore(&alarm_slock, flags);
- }
- }
- return err;
-}
-
-static int alarm_resume(struct platform_device *pdev)
-{
- struct rtc_wkalrm alarm;
- unsigned long flags;
-
- pr_alarm(SUSPEND, "alarm_resume(%p)\n", pdev);
-
- memset(&alarm, 0, sizeof(alarm));
- alarm.enabled = 0;
- rtc_set_alarm(alarm_rtc_dev, &alarm);
-
- spin_lock_irqsave(&alarm_slock, flags);
- suspended = false;
- update_timer_locked(&alarms[ANDROID_ALARM_RTC_WAKEUP], false);
- update_timer_locked(&alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP],
- false);
- spin_unlock_irqrestore(&alarm_slock, flags);
-
- return 0;
-}
-
-static struct rtc_task alarm_rtc_task = {
- .func = alarm_triggered_func
-};
-
-static int rtc_alarm_add_device(struct device *dev,
- struct class_interface *class_intf)
-{
- int err;
- struct rtc_device *rtc = to_rtc_device(dev);
-
- mutex_lock(&alarm_setrtc_mutex);
-
- if (alarm_rtc_dev) {
- err = -EBUSY;
- goto err1;
- }
-
- alarm_platform_dev =
- platform_device_register_simple("alarm", -1, NULL, 0);
- if (IS_ERR(alarm_platform_dev)) {
- err = PTR_ERR(alarm_platform_dev);
- goto err2;
- }
- err = rtc_irq_register(rtc, &alarm_rtc_task);
- if (err)
- goto err3;
- alarm_rtc_dev = rtc;
- pr_alarm(INIT_STATUS, "using rtc device, %s, for alarms", rtc->name);
- mutex_unlock(&alarm_setrtc_mutex);
-
- return 0;
-
-err3:
- platform_device_unregister(alarm_platform_dev);
-err2:
-err1:
- mutex_unlock(&alarm_setrtc_mutex);
- return err;
-}
-
-static void rtc_alarm_remove_device(struct device *dev,
- struct class_interface *class_intf)
-{
- if (dev == &alarm_rtc_dev->dev) {
- pr_alarm(INIT_STATUS, "lost rtc device for alarms");
- rtc_irq_unregister(alarm_rtc_dev, &alarm_rtc_task);
- platform_device_unregister(alarm_platform_dev);
- alarm_rtc_dev = NULL;
- }
-}
-
-static struct class_interface rtc_alarm_interface = {
- .add_dev = &rtc_alarm_add_device,
- .remove_dev = &rtc_alarm_remove_device,
-};
-
-static struct platform_driver alarm_driver = {
- .suspend = alarm_suspend,
- .resume = alarm_resume,
- .driver = {
- .name = "alarm"
- }
-};
-
-static int __init alarm_late_init(void)
-{
- unsigned long flags;
- struct timespec tmp_time, system_time;
-
- /* this needs to run after the rtc is read at boot */
- spin_lock_irqsave(&alarm_slock, flags);
- /* We read the current rtc and system time so we can later calulate
- * elasped realtime to be (boot_systemtime + rtc - boot_rtc) ==
- * (rtc - (boot_rtc - boot_systemtime))
- */
- getnstimeofday(&tmp_time);
- ktime_get_ts(&system_time);
- alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].delta =
- alarms[ANDROID_ALARM_ELAPSED_REALTIME].delta =
- timespec_to_ktime(timespec_sub(tmp_time, system_time));
-
- spin_unlock_irqrestore(&alarm_slock, flags);
- return 0;
-}
-
-static int __init alarm_driver_init(void)
-{
- int err;
- int i;
-
- for (i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) {
- hrtimer_init(&alarms[i].timer,
- CLOCK_REALTIME, HRTIMER_MODE_ABS);
- alarms[i].timer.function = alarm_timer_triggered;
- }
- hrtimer_init(&alarms[ANDROID_ALARM_SYSTEMTIME].timer,
- CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- alarms[ANDROID_ALARM_SYSTEMTIME].timer.function = alarm_timer_triggered;
- err = platform_driver_register(&alarm_driver);
- if (err < 0)
- goto err1;
- wake_lock_init(&alarm_rtc_wake_lock, WAKE_LOCK_SUSPEND, "alarm_rtc");
- rtc_alarm_interface.class = rtc_class;
- err = class_interface_register(&rtc_alarm_interface);
- if (err < 0)
- goto err2;
-
- return 0;
-
-err2:
- wake_lock_destroy(&alarm_rtc_wake_lock);
- platform_driver_unregister(&alarm_driver);
-err1:
- return err;
-}
-
-static void __exit alarm_exit(void)
-{
- class_interface_unregister(&rtc_alarm_interface);
- wake_lock_destroy(&alarm_rtc_wake_lock);
- platform_driver_unregister(&alarm_driver);
-}
-
-late_initcall(alarm_late_init);
-module_init(alarm_driver_init);
-module_exit(alarm_exit);
-
diff --git a/drivers/staging/android/android_alarm.h b/drivers/staging/android/android_alarm.h
index 6eecbde2ef6f..d0cafd637199 100644
--- a/drivers/staging/android/android_alarm.h
+++ b/drivers/staging/android/android_alarm.h
@@ -33,65 +33,6 @@ enum android_alarm_type {
/* ANDROID_ALARM_TIME_CHANGE = 16 */
};
-#ifdef __KERNEL__
-
-#include <linux/ktime.h>
-#include <linux/rbtree.h>
-
-/*
- * The alarm interface is similar to the hrtimer interface but adds support
- * for wakeup from suspend. It also adds an elapsed realtime clock that can
- * be used for periodic timers that need to keep runing while the system is
- * suspended and not be disrupted when the wall time is set.
- */
-
-/**
- * struct alarm - the basic alarm structure
- * @node: red black tree node for time ordered insertion
- * @type: alarm type. rtc/elapsed-realtime/systemtime, wakeup/non-wakeup.
- * @softexpires: the absolute earliest expiry time of the alarm.
- * @expires: the absolute expiry time.
- * @function: alarm expiry callback function
- *
- * The alarm structure must be initialized by alarm_init()
- *
- */
-
-struct android_alarm {
- struct rb_node node;
- enum android_alarm_type type;
- ktime_t softexpires;
- ktime_t expires;
- void (*function)(struct android_alarm *);
-};
-
-void android_alarm_init(struct android_alarm *alarm,
- enum android_alarm_type type, void (*function)(struct android_alarm *));
-void android_alarm_start_range(struct android_alarm *alarm, ktime_t start,
- ktime_t end);
-int android_alarm_try_to_cancel(struct android_alarm *alarm);
-int android_alarm_cancel(struct android_alarm *alarm);
-ktime_t alarm_get_elapsed_realtime(void);
-
-/* set rtc while preserving elapsed realtime */
-int android_alarm_set_rtc(const struct timespec ts);
-
-#ifdef CONFIG_ANDROID_ALARM_OLDDRV_COMPAT
-/*
- * Some older drivers depend on the old API,
- * so provide compatability macros for now.
- */
-#define alarm android_alarm
-#define alarm_init(x, y, z) android_alarm_init(x, y, z)
-#define alarm_start_range(x, y, z) android_alarm_start_range(x, y, z)
-#define alarm_try_to_cancel(x) android_alarm_try_to_cancel(x)
-#define alarm_cancel(x) android_alarm_cancel(x)
-#define alarm_set_rtc(x) android_alarm_set_rtc(x)
-#endif
-
-
-#endif
-
enum android_alarm_return_flags {
ANDROID_ALARM_RTC_WAKEUP_MASK = 1U << ANDROID_ALARM_RTC_WAKEUP,
ANDROID_ALARM_RTC_MASK = 1U << ANDROID_ALARM_RTC,
diff --git a/drivers/staging/android/binder.h b/drivers/staging/android/binder.h
index 25ab6f2759e9..2f7d195d8b15 100644
--- a/drivers/staging/android/binder.h
+++ b/drivers/staging/android/binder.h
@@ -53,17 +53,17 @@ struct flat_binder_object {
/* 8 bytes of data. */
union {
- void *binder; /* local object */
+ void __user *binder; /* local object */
signed long handle; /* remote object */
};
/* extra data associated with local object */
- void *cookie;
+ void __user *cookie;
};
/*
* On 64-bit platforms where user code may run in 32-bits the driver must
- * translate the buffer (and local binder) addresses apropriately.
+ * translate the buffer (and local binder) addresses appropriately.
*/
struct binder_write_read {
@@ -139,9 +139,9 @@ struct binder_transaction_data {
union {
struct {
/* transaction data */
- const void *buffer;
+ const void __user *buffer;
/* offsets from buffer to flat_binder_object structs */
- const void *offsets;
+ const void __user *offsets;
} ptr;
uint8_t buf[8];
} data;
diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c
index ea69b6a77dac..b2e71c6fd175 100644
--- a/drivers/staging/android/logger.c
+++ b/drivers/staging/android/logger.c
@@ -25,6 +25,7 @@
#include <linux/poll.h>
#include <linux/slab.h>
#include <linux/time.h>
+#include <linux/vmalloc.h>
#include "logger.h"
#include <asm/ioctls.h>
@@ -45,8 +46,12 @@ struct logger_log {
size_t w_off; /* current write head offset */
size_t head; /* new readers start here */
size_t size; /* size of the log */
+ struct list_head logs; /* list of log channels (myself)*/
};
+static LIST_HEAD(log_list);
+
+
/*
* struct logger_reader - a logging device open for reading
*
@@ -60,9 +65,9 @@ struct logger_reader {
};
/* logger_offset - returns index 'n' into the log via (optimized) modulus */
-size_t logger_offset(struct logger_log *log, size_t n)
+static size_t logger_offset(struct logger_log *log, size_t n)
{
- return n & (log->size-1);
+ return n & (log->size - 1);
}
@@ -348,7 +353,7 @@ static ssize_t do_write_log_from_user(struct logger_log *log,
* writev(), and aio_write(). Writes are our fast path, and we try to optimize
* them above all else.
*/
-ssize_t logger_aio_write(struct kiocb *iocb, const struct iovec *iov,
+static ssize_t logger_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t ppos)
{
struct logger_log *log = file_get_log(iocb->ki_filp);
@@ -408,7 +413,15 @@ ssize_t logger_aio_write(struct kiocb *iocb, const struct iovec *iov,
return ret;
}
-static struct logger_log *get_log_from_minor(int);
+static struct logger_log *get_log_from_minor(int minor)
+{
+ struct logger_log *log;
+
+ list_for_each_entry(log, &log_list, logs)
+ if (log->misc.minor == minor)
+ return log;
+ return NULL;
+}
/*
* logger_open - the log's open() file operation
@@ -565,80 +578,84 @@ static const struct file_operations logger_fops = {
};
/*
- * Defines a log structure with name 'NAME' and a size of 'SIZE' bytes, which
- * must be a power of two, greater than LOGGER_ENTRY_MAX_LEN, and less than
- * LONG_MAX minus LOGGER_ENTRY_MAX_LEN.
+ * Log size must be a power of two, greater than LOGGER_ENTRY_MAX_LEN,
+ * and less than LONG_MAX minus LOGGER_ENTRY_MAX_LEN.
*/
-#define DEFINE_LOGGER_DEVICE(VAR, NAME, SIZE) \
-static unsigned char _buf_ ## VAR[SIZE]; \
-static struct logger_log VAR = { \
- .buffer = _buf_ ## VAR, \
- .misc = { \
- .minor = MISC_DYNAMIC_MINOR, \
- .name = NAME, \
- .fops = &logger_fops, \
- .parent = NULL, \
- }, \
- .wq = __WAIT_QUEUE_HEAD_INITIALIZER(VAR .wq), \
- .readers = LIST_HEAD_INIT(VAR .readers), \
- .mutex = __MUTEX_INITIALIZER(VAR .mutex), \
- .w_off = 0, \
- .head = 0, \
- .size = SIZE, \
-};
+static int __init create_log(char *log_name, int size)
+{
+ int ret = 0;
+ struct logger_log *log;
+ unsigned char *buffer;
-DEFINE_LOGGER_DEVICE(log_main, LOGGER_LOG_MAIN, 256*1024)
-DEFINE_LOGGER_DEVICE(log_events, LOGGER_LOG_EVENTS, 256*1024)
-DEFINE_LOGGER_DEVICE(log_radio, LOGGER_LOG_RADIO, 256*1024)
-DEFINE_LOGGER_DEVICE(log_system, LOGGER_LOG_SYSTEM, 256*1024)
+ buffer = vmalloc(size);
+ if (buffer == NULL)
+ return -ENOMEM;
-static struct logger_log *get_log_from_minor(int minor)
-{
- if (log_main.misc.minor == minor)
- return &log_main;
- if (log_events.misc.minor == minor)
- return &log_events;
- if (log_radio.misc.minor == minor)
- return &log_radio;
- if (log_system.misc.minor == minor)
- return &log_system;
- return NULL;
-}
+ log = kzalloc(sizeof(struct logger_log), GFP_KERNEL);
+ if (log == NULL) {
+ ret = -ENOMEM;
+ goto out_free_buffer;
+ }
+ log->buffer = buffer;
-static int __init init_log(struct logger_log *log)
-{
- int ret;
+ log->misc.minor = MISC_DYNAMIC_MINOR;
+ log->misc.name = kstrdup(log_name, GFP_KERNEL);
+ if (log->misc.name == NULL) {
+ ret = -ENOMEM;
+ goto out_free_log;
+ }
+
+ log->misc.fops = &logger_fops;
+ log->misc.parent = NULL;
+ init_waitqueue_head(&log->wq);
+ INIT_LIST_HEAD(&log->readers);
+ mutex_init(&log->mutex);
+ log->w_off = 0;
+ log->head = 0;
+ log->size = size;
+
+ INIT_LIST_HEAD(&log->logs);
+ list_add_tail(&log->logs, &log_list);
+
+ /* finally, initialize the misc device for this log */
ret = misc_register(&log->misc);
if (unlikely(ret)) {
printk(KERN_ERR "logger: failed to register misc "
"device for log '%s'!\n", log->misc.name);
- return ret;
+ goto out_free_log;
}
printk(KERN_INFO "logger: created %luK log '%s'\n",
(unsigned long) log->size >> 10, log->misc.name);
return 0;
+
+out_free_log:
+ kfree(log);
+
+out_free_buffer:
+ vfree(buffer);
+ return ret;
}
static int __init logger_init(void)
{
int ret;
- ret = init_log(&log_main);
+ ret = create_log(LOGGER_LOG_MAIN, 256*1024);
if (unlikely(ret))
goto out;
- ret = init_log(&log_events);
+ ret = create_log(LOGGER_LOG_EVENTS, 256*1024);
if (unlikely(ret))
goto out;
- ret = init_log(&log_radio);
+ ret = create_log(LOGGER_LOG_RADIO, 256*1024);
if (unlikely(ret))
goto out;
- ret = init_log(&log_system);
+ ret = create_log(LOGGER_LOG_SYSTEM, 256*1024);
if (unlikely(ret))
goto out;
diff --git a/drivers/staging/android/persistent_ram.c b/drivers/staging/android/persistent_ram.c
deleted file mode 100644
index 8d8c1e33e0ff..000000000000
--- a/drivers/staging/android/persistent_ram.c
+++ /dev/null
@@ -1,473 +0,0 @@
-/*
- * Copyright (C) 2012 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/list.h>
-#include <linux/memblock.h>
-#include <linux/rslib.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include "persistent_ram.h"
-
-struct persistent_ram_buffer {
- uint32_t sig;
- atomic_t start;
- atomic_t size;
- uint8_t data[0];
-};
-
-#define PERSISTENT_RAM_SIG (0x43474244) /* DBGC */
-
-static __initdata LIST_HEAD(persistent_ram_list);
-
-static inline size_t buffer_size(struct persistent_ram_zone *prz)
-{
- return atomic_read(&prz->buffer->size);
-}
-
-static inline size_t buffer_start(struct persistent_ram_zone *prz)
-{
- return atomic_read(&prz->buffer->start);
-}
-
-/* increase and wrap the start pointer, returning the old value */
-static inline size_t buffer_start_add(struct persistent_ram_zone *prz, size_t a)
-{
- int old;
- int new;
-
- do {
- old = atomic_read(&prz->buffer->start);
- new = old + a;
- while (unlikely(new > prz->buffer_size))
- new -= prz->buffer_size;
- } while (atomic_cmpxchg(&prz->buffer->start, old, new) != old);
-
- return old;
-}
-
-/* increase the size counter until it hits the max size */
-static inline void buffer_size_add(struct persistent_ram_zone *prz, size_t a)
-{
- size_t old;
- size_t new;
-
- if (atomic_read(&prz->buffer->size) == prz->buffer_size)
- return;
-
- do {
- old = atomic_read(&prz->buffer->size);
- new = old + a;
- if (new > prz->buffer_size)
- new = prz->buffer_size;
- } while (atomic_cmpxchg(&prz->buffer->size, old, new) != old);
-}
-
-/* increase the size counter, retuning an error if it hits the max size */
-static inline ssize_t buffer_size_add_clamp(struct persistent_ram_zone *prz,
- size_t a)
-{
- size_t old;
- size_t new;
-
- do {
- old = atomic_read(&prz->buffer->size);
- new = old + a;
- if (new > prz->buffer_size)
- return -ENOMEM;
- } while (atomic_cmpxchg(&prz->buffer->size, old, new) != old);
-
- return 0;
-}
-
-static void notrace persistent_ram_encode_rs8(struct persistent_ram_zone *prz,
- uint8_t *data, size_t len, uint8_t *ecc)
-{
- int i;
- uint16_t par[prz->ecc_size];
-
- /* Initialize the parity buffer */
- memset(par, 0, sizeof(par));
- encode_rs8(prz->rs_decoder, data, len, par, 0);
- for (i = 0; i < prz->ecc_size; i++)
- ecc[i] = par[i];
-}
-
-static int persistent_ram_decode_rs8(struct persistent_ram_zone *prz,
- void *data, size_t len, uint8_t *ecc)
-{
- int i;
- uint16_t par[prz->ecc_size];
-
- for (i = 0; i < prz->ecc_size; i++)
- par[i] = ecc[i];
- return decode_rs8(prz->rs_decoder, data, par, len,
- NULL, 0, NULL, 0, NULL);
-}
-
-static void notrace persistent_ram_update_ecc(struct persistent_ram_zone *prz,
- unsigned int start, unsigned int count)
-{
- struct persistent_ram_buffer *buffer = prz->buffer;
- uint8_t *buffer_end = buffer->data + prz->buffer_size;
- uint8_t *block;
- uint8_t *par;
- int ecc_block_size = prz->ecc_block_size;
- int ecc_size = prz->ecc_size;
- int size = prz->ecc_block_size;
-
- if (!prz->ecc)
- return;
-
- block = buffer->data + (start & ~(ecc_block_size - 1));
- par = prz->par_buffer + (start / ecc_block_size) * prz->ecc_size;
-
- do {
- if (block + ecc_block_size > buffer_end)
- size = buffer_end - block;
- persistent_ram_encode_rs8(prz, block, size, par);
- block += ecc_block_size;
- par += ecc_size;
- } while (block < buffer->data + start + count);
-}
-
-static void persistent_ram_update_header_ecc(struct persistent_ram_zone *prz)
-{
- struct persistent_ram_buffer *buffer = prz->buffer;
-
- if (!prz->ecc)
- return;
-
- persistent_ram_encode_rs8(prz, (uint8_t *)buffer, sizeof(*buffer),
- prz->par_header);
-}
-
-static void persistent_ram_ecc_old(struct persistent_ram_zone *prz)
-{
- struct persistent_ram_buffer *buffer = prz->buffer;
- uint8_t *block;
- uint8_t *par;
-
- if (!prz->ecc)
- return;
-
- block = buffer->data;
- par = prz->par_buffer;
- while (block < buffer->data + buffer_size(prz)) {
- int numerr;
- int size = prz->ecc_block_size;
- if (block + size > buffer->data + prz->buffer_size)
- size = buffer->data + prz->buffer_size - block;
- numerr = persistent_ram_decode_rs8(prz, block, size, par);
- if (numerr > 0) {
- pr_devel("persistent_ram: error in block %p, %d\n",
- block, numerr);
- prz->corrected_bytes += numerr;
- } else if (numerr < 0) {
- pr_devel("persistent_ram: uncorrectable error in block %p\n",
- block);
- prz->bad_blocks++;
- }
- block += prz->ecc_block_size;
- par += prz->ecc_size;
- }
-}
-
-static int persistent_ram_init_ecc(struct persistent_ram_zone *prz,
- size_t buffer_size)
-{
- int numerr;
- struct persistent_ram_buffer *buffer = prz->buffer;
- int ecc_blocks;
-
- if (!prz->ecc)
- return 0;
-
- prz->ecc_block_size = 128;
- prz->ecc_size = 16;
- prz->ecc_symsize = 8;
- prz->ecc_poly = 0x11d;
-
- ecc_blocks = DIV_ROUND_UP(prz->buffer_size, prz->ecc_block_size);
- prz->buffer_size -= (ecc_blocks + 1) * prz->ecc_size;
-
- if (prz->buffer_size > buffer_size) {
- pr_err("persistent_ram: invalid size %zu, non-ecc datasize %zu\n",
- buffer_size, prz->buffer_size);
- return -EINVAL;
- }
-
- prz->par_buffer = buffer->data + prz->buffer_size;
- prz->par_header = prz->par_buffer + ecc_blocks * prz->ecc_size;
-
- /*
- * first consecutive root is 0
- * primitive element to generate roots = 1
- */
- prz->rs_decoder = init_rs(prz->ecc_symsize, prz->ecc_poly, 0, 1,
- prz->ecc_size);
- if (prz->rs_decoder == NULL) {
- pr_info("persistent_ram: init_rs failed\n");
- return -EINVAL;
- }
-
- prz->corrected_bytes = 0;
- prz->bad_blocks = 0;
-
- numerr = persistent_ram_decode_rs8(prz, buffer, sizeof(*buffer),
- prz->par_header);
- if (numerr > 0) {
- pr_info("persistent_ram: error in header, %d\n", numerr);
- prz->corrected_bytes += numerr;
- } else if (numerr < 0) {
- pr_info("persistent_ram: uncorrectable error in header\n");
- prz->bad_blocks++;
- }
-
- return 0;
-}
-
-ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
- char *str, size_t len)
-{
- ssize_t ret;
-
- if (prz->corrected_bytes || prz->bad_blocks)
- ret = snprintf(str, len, ""
- "\n%d Corrected bytes, %d unrecoverable blocks\n",
- prz->corrected_bytes, prz->bad_blocks);
- else
- ret = snprintf(str, len, "\nNo errors detected\n");
-
- return ret;
-}
-
-static void notrace persistent_ram_update(struct persistent_ram_zone *prz,
- const void *s, unsigned int start, unsigned int count)
-{
- struct persistent_ram_buffer *buffer = prz->buffer;
- memcpy(buffer->data + start, s, count);
- persistent_ram_update_ecc(prz, start, count);
-}
-
-static void __init
-persistent_ram_save_old(struct persistent_ram_zone *prz)
-{
- struct persistent_ram_buffer *buffer = prz->buffer;
- size_t size = buffer_size(prz);
- size_t start = buffer_start(prz);
- char *dest;
-
- persistent_ram_ecc_old(prz);
-
- dest = kmalloc(size, GFP_KERNEL);
- if (dest == NULL) {
- pr_err("persistent_ram: failed to allocate buffer\n");
- return;
- }
-
- prz->old_log = dest;
- prz->old_log_size = size;
- memcpy(prz->old_log, &buffer->data[start], size - start);
- memcpy(prz->old_log + size - start, &buffer->data[0], start);
-}
-
-int notrace persistent_ram_write(struct persistent_ram_zone *prz,
- const void *s, unsigned int count)
-{
- int rem;
- int c = count;
- size_t start;
-
- if (unlikely(c > prz->buffer_size)) {
- s += c - prz->buffer_size;
- c = prz->buffer_size;
- }
-
- buffer_size_add_clamp(prz, c);
-
- start = buffer_start_add(prz, c);
-
- rem = prz->buffer_size - start;
- if (unlikely(rem < c)) {
- persistent_ram_update(prz, s, start, rem);
- s += rem;
- c -= rem;
- start = 0;
- }
- persistent_ram_update(prz, s, start, c);
-
- persistent_ram_update_header_ecc(prz);
-
- return count;
-}
-
-size_t persistent_ram_old_size(struct persistent_ram_zone *prz)
-{
- return prz->old_log_size;
-}
-
-void *persistent_ram_old(struct persistent_ram_zone *prz)
-{
- return prz->old_log;
-}
-
-void persistent_ram_free_old(struct persistent_ram_zone *prz)
-{
- kfree(prz->old_log);
- prz->old_log = NULL;
- prz->old_log_size = 0;
-}
-
-static int persistent_ram_buffer_map(phys_addr_t start, phys_addr_t size,
- struct persistent_ram_zone *prz)
-{
- struct page **pages;
- phys_addr_t page_start;
- unsigned int page_count;
- pgprot_t prot;
- unsigned int i;
-
- page_start = start - offset_in_page(start);
- page_count = DIV_ROUND_UP(size + offset_in_page(start), PAGE_SIZE);
-
- prot = pgprot_noncached(PAGE_KERNEL);
-
- pages = kmalloc(sizeof(struct page *) * page_count, GFP_KERNEL);
- if (!pages) {
- pr_err("%s: Failed to allocate array for %u pages\n", __func__,
- page_count);
- return -ENOMEM;
- }
-
- for (i = 0; i < page_count; i++) {
- phys_addr_t addr = page_start + i * PAGE_SIZE;
- pages[i] = pfn_to_page(addr >> PAGE_SHIFT);
- }
- prz->vaddr = vmap(pages, page_count, VM_MAP, prot);
- kfree(pages);
- if (!prz->vaddr) {
- pr_err("%s: Failed to map %u pages\n", __func__, page_count);
- return -ENOMEM;
- }
-
- prz->buffer = prz->vaddr + offset_in_page(start);
- prz->buffer_size = size - sizeof(struct persistent_ram_buffer);
-
- return 0;
-}
-
-static int __init persistent_ram_buffer_init(const char *name,
- struct persistent_ram_zone *prz)
-{
- int i;
- struct persistent_ram *ram;
- struct persistent_ram_descriptor *desc;
- phys_addr_t start;
-
- list_for_each_entry(ram, &persistent_ram_list, node) {
- start = ram->start;
- for (i = 0; i < ram->num_descs; i++) {
- desc = &ram->descs[i];
- if (!strcmp(desc->name, name))
- return persistent_ram_buffer_map(start,
- desc->size, prz);
- start += desc->size;
- }
- }
-
- return -EINVAL;
-}
-
-static __init
-struct persistent_ram_zone *__persistent_ram_init(struct device *dev, bool ecc)
-{
- struct persistent_ram_zone *prz;
- int ret = -ENOMEM;
-
- prz = kzalloc(sizeof(struct persistent_ram_zone), GFP_KERNEL);
- if (!prz) {
- pr_err("persistent_ram: failed to allocate persistent ram zone\n");
- goto err;
- }
-
- INIT_LIST_HEAD(&prz->node);
-
- ret = persistent_ram_buffer_init(dev_name(dev), prz);
- if (ret) {
- pr_err("persistent_ram: failed to initialize buffer\n");
- goto err;
- }
-
- prz->ecc = ecc;
- ret = persistent_ram_init_ecc(prz, prz->buffer_size);
- if (ret)
- goto err;
-
- if (prz->buffer->sig == PERSISTENT_RAM_SIG) {
- if (buffer_size(prz) > prz->buffer_size ||
- buffer_start(prz) > buffer_size(prz))
- pr_info("persistent_ram: found existing invalid buffer,"
- " size %ld, start %ld\n",
- buffer_size(prz), buffer_start(prz));
- else {
- pr_info("persistent_ram: found existing buffer,"
- " size %ld, start %ld\n",
- buffer_size(prz), buffer_start(prz));
- persistent_ram_save_old(prz);
- }
- } else {
- pr_info("persistent_ram: no valid data in buffer"
- " (sig = 0x%08x)\n", prz->buffer->sig);
- }
-
- prz->buffer->sig = PERSISTENT_RAM_SIG;
- atomic_set(&prz->buffer->start, 0);
- atomic_set(&prz->buffer->size, 0);
-
- return prz;
-err:
- kfree(prz);
- return ERR_PTR(ret);
-}
-
-struct persistent_ram_zone * __init
-persistent_ram_init_ringbuffer(struct device *dev, bool ecc)
-{
- return __persistent_ram_init(dev, ecc);
-}
-
-int __init persistent_ram_early_init(struct persistent_ram *ram)
-{
- int ret;
-
- ret = memblock_reserve(ram->start, ram->size);
- if (ret) {
- pr_err("Failed to reserve persistent memory from %08lx-%08lx\n",
- (long)ram->start, (long)(ram->start + ram->size - 1));
- return ret;
- }
-
- list_add_tail(&ram->node, &persistent_ram_list);
-
- pr_info("Initialized persistent memory from %08lx-%08lx\n",
- (long)ram->start, (long)(ram->start + ram->size - 1));
-
- return 0;
-}
diff --git a/drivers/staging/android/persistent_ram.h b/drivers/staging/android/persistent_ram.h
deleted file mode 100644
index f41e2086c645..000000000000
--- a/drivers/staging/android/persistent_ram.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#ifndef __LINUX_PERSISTENT_RAM_H__
-#define __LINUX_PERSISTENT_RAM_H__
-
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/types.h>
-
-struct persistent_ram_buffer;
-
-struct persistent_ram_descriptor {
- const char *name;
- phys_addr_t size;
-};
-
-struct persistent_ram {
- phys_addr_t start;
- phys_addr_t size;
-
- int num_descs;
- struct persistent_ram_descriptor *descs;
-
- struct list_head node;
-};
-
-struct persistent_ram_zone {
- struct list_head node;
- void *vaddr;
- struct persistent_ram_buffer *buffer;
- size_t buffer_size;
-
- /* ECC correction */
- bool ecc;
- char *par_buffer;
- char *par_header;
- struct rs_control *rs_decoder;
- int corrected_bytes;
- int bad_blocks;
- int ecc_block_size;
- int ecc_size;
- int ecc_symsize;
- int ecc_poly;
-
- char *old_log;
- size_t old_log_size;
- size_t old_log_footer_size;
- bool early;
-};
-
-int persistent_ram_early_init(struct persistent_ram *ram);
-
-struct persistent_ram_zone *persistent_ram_init_ringbuffer(struct device *dev,
- bool ecc);
-
-int persistent_ram_write(struct persistent_ram_zone *prz, const void *s,
- unsigned int count);
-
-size_t persistent_ram_old_size(struct persistent_ram_zone *prz);
-void *persistent_ram_old(struct persistent_ram_zone *prz);
-void persistent_ram_free_old(struct persistent_ram_zone *prz);
-ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
- char *str, size_t len);
-
-#endif
diff --git a/drivers/staging/android/ram_console.c b/drivers/staging/android/ram_console.c
index ce140ffc54ea..82323bb1d1a3 100644
--- a/drivers/staging/android/ram_console.c
+++ b/drivers/staging/android/ram_console.c
@@ -21,7 +21,7 @@
#include <linux/string.h>
#include <linux/uaccess.h>
#include <linux/io.h>
-#include "persistent_ram.h"
+#include <linux/pstore_ram.h>
#include "ram_console.h"
static struct persistent_ram_zone *ram_console_zone;
diff --git a/drivers/staging/android/timed_output.c b/drivers/staging/android/timed_output.c
index f373422308e0..38d930cadad3 100644
--- a/drivers/staging/android/timed_output.c
+++ b/drivers/staging/android/timed_output.c
@@ -99,6 +99,7 @@ EXPORT_SYMBOL_GPL(timed_output_dev_register);
void timed_output_dev_unregister(struct timed_output_dev *tdev)
{
+ tdev->enable(tdev, 0);
device_remove_file(tdev->dev, &dev_attr_enable);
device_destroy(timed_output_class, MKDEV(0, tdev->index));
dev_set_drvdata(tdev->dev, NULL);