property is mandatory for the LEDs in the non-flash modes
(e.g. torch or indicator).
+- panic-indicator : This property specifies that the LED should be used,
+ if at all possible, as a panic indicator.
+
Required properties for flash LED child nodes:
- flash-max-microamp : Maximum flash LED supply current in microamperes.
- flash-max-timeout-us : Maximum timeout in microseconds after which the flash
property is not present.
- retain-state-suspended: (optional) The suspend state can be retained.Such
as charge-led gpio.
+- panic-indicator : (optional)
+ see Documentation/devicetree/bindings/leds/common.txt
Examples:
tristate "LED driver for Intel NAS SS4200 series"
depends on LEDS_CLASS
depends on PCI && DMI
+ depends on X86
help
This option enables support for the Intel SS4200 series of
- Network Attached Storage servers. You may control the hard
- drive or power LEDs on the front panel. Using this driver
+ Network Attached Storage servers. You may control the hard
+ drive or power LEDs on the front panel. Using this driver
can stop the front LED from blinking after startup.
config LEDS_LT3593
* Nests outside led_cdev->trigger_lock
*/
static DECLARE_RWSEM(triggers_list_lock);
-static LIST_HEAD(trigger_list);
+LIST_HEAD(trigger_list);
/* Used by LED Class */
led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
if (!template->retain_state_suspended)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
+ if (template->panic_indicator)
+ led_dat->cdev.flags |= LED_PANIC_INDICATOR;
ret = gpiod_direction_output(led_dat->gpiod, state);
if (ret < 0)
if (fwnode_property_present(child, "retain-state-suspended"))
led.retain_state_suspended = 1;
+ if (fwnode_property_present(child, "panic-indicator"))
+ led.panic_indicator = 1;
ret = create_gpio_led(&led, &priv->leds[priv->num_leds],
dev, NULL);
DMI_MATCH(DMI_PRODUCT_VERSION, "1.00.00")
}
},
+ {
+ /*
+ * FUJITSU SIEMENS SCALEO Home Server/SS4200-E
+ * BIOS V090L 12/19/2007
+ */
+ .callback = ss4200_led_dmi_callback,
+ .ident = "Fujitsu Siemens SCALEO Home Server",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "SCALEO Home Server"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "1.00.00")
+ }
+ },
{}
};
int result;
result = choose_times(tca->bank[bank].ontime, &c1, &c2);
+ if (result < 0)
+ return;
dev_dbg(&tca->client->dev,
"Chose on times %d(%d) %d(%d) for %dms\n",
c1, time_codes[c1],
extern struct rw_semaphore leds_list_lock;
extern struct list_head leds_list;
+extern struct list_head trigger_list;
#endif /* __LEDS_H_INCLUDED */
This allows LEDs to be controlled by IDE disk activity.
If unsure, say Y.
+config LEDS_TRIGGER_MTD
+ bool "LED MTD (NAND/NOR) Trigger"
+ depends on MTD
+ depends on LEDS_TRIGGERS
+ help
+ This allows LEDs to be controlled by MTD activity.
+ If unsure, say N.
+
config LEDS_TRIGGER_HEARTBEAT
tristate "LED Heartbeat Trigger"
depends on LEDS_TRIGGERS
This enables direct flash/torch on/off by the driver, kernel space.
If unsure, say Y.
+config LEDS_TRIGGER_PANIC
+ bool "LED Panic Trigger"
+ depends on LEDS_TRIGGERS
+ help
+ This allows LEDs to be configured to blink on a kernel panic.
+ Enabling this option will allow to mark certain LEDs as panic indicators,
+ allowing to blink them on a kernel panic, even if they are set to
+ a different trigger.
+ If unsure, say Y.
+
endif # LEDS_TRIGGERS
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
obj-$(CONFIG_LEDS_TRIGGER_ONESHOT) += ledtrig-oneshot.o
obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o
+obj-$(CONFIG_LEDS_TRIGGER_MTD) += ledtrig-mtd.o
obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o
obj-$(CONFIG_LEDS_TRIGGER_GPIO) += ledtrig-gpio.o
obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
obj-$(CONFIG_LEDS_TRIGGER_CAMERA) += ledtrig-camera.o
+obj-$(CONFIG_LEDS_TRIGGER_PANIC) += ledtrig-panic.o
#define BLINK_DELAY 30
DEFINE_LED_TRIGGER(ledtrig_ide);
-static unsigned long ide_blink_delay = BLINK_DELAY;
void ledtrig_ide_activity(void)
{
+ unsigned long ide_blink_delay = BLINK_DELAY;
+
led_trigger_blink_oneshot(ledtrig_ide,
&ide_blink_delay, &ide_blink_delay, 0);
}
--- /dev/null
+/*
+ * LED MTD trigger
+ *
+ * Copyright 2016 Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
+ *
+ * Based on LED IDE-Disk Activity Trigger
+ *
+ * Copyright 2006 Openedhand Ltd.
+ *
+ * Author: Richard Purdie <rpurdie@openedhand.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/leds.h>
+
+#define BLINK_DELAY 30
+
+DEFINE_LED_TRIGGER(ledtrig_mtd);
+DEFINE_LED_TRIGGER(ledtrig_nand);
+
+void ledtrig_mtd_activity(void)
+{
+ unsigned long blink_delay = BLINK_DELAY;
+
+ led_trigger_blink_oneshot(ledtrig_mtd,
+ &blink_delay, &blink_delay, 0);
+ led_trigger_blink_oneshot(ledtrig_nand,
+ &blink_delay, &blink_delay, 0);
+}
+EXPORT_SYMBOL(ledtrig_mtd_activity);
+
+static int __init ledtrig_mtd_init(void)
+{
+ led_trigger_register_simple("mtd", &ledtrig_mtd);
+ led_trigger_register_simple("nand-disk", &ledtrig_nand);
+
+ return 0;
+}
+device_initcall(ledtrig_mtd_init);
--- /dev/null
+/*
+ * Kernel Panic LED Trigger
+ *
+ * Copyright 2016 Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/notifier.h>
+#include <linux/leds.h>
+#include "../leds.h"
+
+static struct led_trigger *trigger;
+
+/*
+ * This is called in a special context by the atomic panic
+ * notifier. This means the trigger can be changed without
+ * worrying about locking.
+ */
+static void led_trigger_set_panic(struct led_classdev *led_cdev)
+{
+ struct led_trigger *trig;
+
+ list_for_each_entry(trig, &trigger_list, next_trig) {
+ if (strcmp("panic", trig->name))
+ continue;
+ if (led_cdev->trigger)
+ list_del(&led_cdev->trig_list);
+ list_add_tail(&led_cdev->trig_list, &trig->led_cdevs);
+
+ /* Avoid the delayed blink path */
+ led_cdev->blink_delay_on = 0;
+ led_cdev->blink_delay_off = 0;
+
+ led_cdev->trigger = trig;
+ if (trig->activate)
+ trig->activate(led_cdev);
+ break;
+ }
+}
+
+static int led_trigger_panic_notifier(struct notifier_block *nb,
+ unsigned long code, void *unused)
+{
+ struct led_classdev *led_cdev;
+
+ list_for_each_entry(led_cdev, &leds_list, node)
+ if (led_cdev->flags & LED_PANIC_INDICATOR)
+ led_trigger_set_panic(led_cdev);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block led_trigger_panic_nb = {
+ .notifier_call = led_trigger_panic_notifier,
+};
+
+static long led_panic_blink(int state)
+{
+ led_trigger_event(trigger, state ? LED_FULL : LED_OFF);
+ return 0;
+}
+
+static int __init ledtrig_panic_init(void)
+{
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &led_trigger_panic_nb);
+
+ led_trigger_register_simple("panic", &trigger);
+ panic_blink = led_panic_blink;
+ return 0;
+}
+device_initcall(ledtrig_panic_init);
#include <linux/slab.h>
#include <linux/reboot.h>
#include <linux/kconfig.h>
+#include <linux/leds.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
mtd_erase_callback(instr);
return 0;
}
+ ledtrig_mtd_activity();
return mtd->_erase(mtd, instr);
}
EXPORT_SYMBOL_GPL(mtd_erase);
if (!len)
return 0;
+ ledtrig_mtd_activity();
/*
* In the absence of an error, drivers return a non-negative integer
* representing the maximum number of bitflips that were corrected on
return -EROFS;
if (!len)
return 0;
+ ledtrig_mtd_activity();
return mtd->_write(mtd, to, len, retlen, buf);
}
EXPORT_SYMBOL_GPL(mtd_write);
ops->retlen = ops->oobretlen = 0;
if (!mtd->_read_oob)
return -EOPNOTSUPP;
+
+ ledtrig_mtd_activity();
/*
* In cases where ops->datbuf != NULL, mtd->_read_oob() has semantics
* similar to mtd->_read(), returning a non-negative integer
}
EXPORT_SYMBOL_GPL(mtd_read_oob);
+int mtd_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
+{
+ ops->retlen = ops->oobretlen = 0;
+ if (!mtd->_write_oob)
+ return -EOPNOTSUPP;
+ if (!(mtd->flags & MTD_WRITEABLE))
+ return -EROFS;
+ ledtrig_mtd_activity();
+ return mtd->_write_oob(mtd, to, ops);
+}
+EXPORT_SYMBOL_GPL(mtd_write_oob);
+
/*
* Method to access the protection register area, present in some flash
* devices. The user data is one time programmable but the factory data is read
#include <linux/mtd/nand_bch.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
-#include <linux/leds.h>
#include <linux/io.h>
#include <linux/mtd/partitions.h>
#include <linux/of_mtd.h>
static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
struct mtd_oob_ops *ops);
-/*
- * For devices which display every fart in the system on a separate LED. Is
- * compiled away when LED support is disabled.
- */
-DEFINE_LED_TRIGGER(nand_led_trigger);
-
static int check_offs_len(struct mtd_info *mtd,
loff_t ofs, uint64_t len)
{
if (in_interrupt() || oops_in_progress)
return panic_nand_wait_ready(mtd, timeo);
- led_trigger_event(nand_led_trigger, LED_FULL);
/* Wait until command is processed or timeout occurs */
timeo = jiffies + msecs_to_jiffies(timeo);
do {
if (chip->dev_ready(mtd))
- goto out;
+ return;
cond_resched();
} while (time_before(jiffies, timeo));
if (!chip->dev_ready(mtd))
pr_warn_ratelimited("timeout while waiting for chip to become ready\n");
-out:
- led_trigger_event(nand_led_trigger, LED_OFF);
}
EXPORT_SYMBOL_GPL(nand_wait_ready);
int status;
unsigned long timeo = 400;
- led_trigger_event(nand_led_trigger, LED_FULL);
-
/*
* Apply this short delay always to ensure that we do wait tWB in any
* case on any machine.
cond_resched();
} while (time_before(jiffies, timeo));
}
- led_trigger_event(nand_led_trigger, LED_OFF);
status = (int)chip->read_byte(mtd);
/* This can happen if in case of timeout or buggy dev_ready */
}
EXPORT_SYMBOL_GPL(nand_release);
-static int __init nand_base_init(void)
-{
- led_trigger_register_simple("nand-disk", &nand_led_trigger);
- return 0;
-}
-
-static void __exit nand_base_exit(void)
-{
- led_trigger_unregister_simple(nand_led_trigger);
-}
-
-module_init(nand_base_init);
-module_exit(nand_base_exit);
-
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com>");
MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
#define LED_SYSFS_DISABLE (1 << 22)
#define LED_DEV_CAP_FLASH (1 << 23)
#define LED_HW_PLUGGABLE (1 << 24)
+#define LED_PANIC_INDICATOR (1 << 25)
/* Set LED brightness level
* Must not sleep. Use brightness_set_blocking for drivers
static inline void ledtrig_ide_activity(void) {}
#endif
+#ifdef CONFIG_LEDS_TRIGGER_MTD
+extern void ledtrig_mtd_activity(void);
+#else
+static inline void ledtrig_mtd_activity(void) {}
+#endif
+
#if defined(CONFIG_LEDS_TRIGGER_CAMERA) || defined(CONFIG_LEDS_TRIGGER_CAMERA_MODULE)
extern void ledtrig_flash_ctrl(bool on);
extern void ledtrig_torch_ctrl(bool on);
unsigned gpio;
unsigned active_low : 1;
unsigned retain_state_suspended : 1;
+ unsigned panic_indicator : 1;
unsigned default_state : 2;
/* default_state should be one of LEDS_GPIO_DEFSTATE_(ON|OFF|KEEP) */
struct gpio_desc *gpiod;
const u_char *buf);
int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops);
-
-static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
- struct mtd_oob_ops *ops)
-{
- ops->retlen = ops->oobretlen = 0;
- if (!mtd->_write_oob)
- return -EOPNOTSUPP;
- if (!(mtd->flags & MTD_WRITEABLE))
- return -EROFS;
- return mtd->_write_oob(mtd, to, ops);
-}
+int mtd_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops);
int mtd_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,
struct otp_info *buf);
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