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-rw-r--r--include/linux/gpio/consumer.h15
-rw-r--r--include/linux/leds.h25
-rw-r--r--include/media/v4l2-flash-led-class.h148
-rw-r--r--include/media/v4l2-subdev.h2
4 files changed, 190 insertions, 0 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index fd098169fe87..adac255aee86 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -407,6 +407,21 @@ static inline int desc_to_gpio(const struct gpio_desc *desc)
return -EINVAL;
}
+/* Child properties interface */
+struct fwnode_handle;
+
+static inline struct gpio_desc *fwnode_get_named_gpiod(
+ struct fwnode_handle *fwnode, const char *propname)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline struct gpio_desc *devm_get_gpiod_from_child(
+ struct device *dev, const char *con_id, struct fwnode_handle *child)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
#endif /* CONFIG_GPIOLIB */
/*
diff --git a/include/linux/leds.h b/include/linux/leds.h
index 9a2b000094cf..b122eeafb5dc 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -12,6 +12,7 @@
#ifndef __LINUX_LEDS_H_INCLUDED
#define __LINUX_LEDS_H_INCLUDED
+#include <linux/device.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/rwsem.h>
@@ -222,6 +223,11 @@ struct led_trigger {
struct list_head next_trig;
};
+ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count);
+ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
+ char *buf);
+
/* Registration functions for complex triggers */
extern int led_trigger_register(struct led_trigger *trigger);
extern void led_trigger_unregister(struct led_trigger *trigger);
@@ -238,6 +244,16 @@ extern void led_trigger_blink_oneshot(struct led_trigger *trigger,
unsigned long *delay_on,
unsigned long *delay_off,
int invert);
+extern void led_trigger_set_default(struct led_classdev *led_cdev);
+extern void led_trigger_set(struct led_classdev *led_cdev,
+ struct led_trigger *trigger);
+extern void led_trigger_remove(struct led_classdev *led_cdev);
+
+static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
+{
+ return led_cdev->trigger_data;
+}
+
/**
* led_trigger_rename_static - rename a trigger
* @name: the new trigger name
@@ -267,6 +283,15 @@ static inline void led_trigger_register_simple(const char *name,
static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {}
static inline void led_trigger_event(struct led_trigger *trigger,
enum led_brightness event) {}
+static inline void led_trigger_set_default(struct led_classdev *led_cdev) {}
+static inline void led_trigger_set(struct led_classdev *led_cdev,
+ struct led_trigger *trigger) {}
+static inline void led_trigger_remove(struct led_classdev *led_cdev) {}
+static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
+{
+ return NULL;
+}
+
#endif /* CONFIG_LEDS_TRIGGERS */
/* Trigger specific functions */
diff --git a/include/media/v4l2-flash-led-class.h b/include/media/v4l2-flash-led-class.h
new file mode 100644
index 000000000000..098236c083b8
--- /dev/null
+++ b/include/media/v4l2-flash-led-class.h
@@ -0,0 +1,148 @@
+/*
+ * V4L2 flash LED sub-device registration helpers.
+ *
+ * Copyright (C) 2015 Samsung Electronics Co., Ltd
+ * Author: Jacek Anaszewski <j.anaszewski@samsung.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.
+ */
+
+#ifndef _V4L2_FLASH_H
+#define _V4L2_FLASH_H
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
+
+struct led_classdev_flash;
+struct led_classdev;
+struct v4l2_flash;
+enum led_brightness;
+
+/*
+ * struct v4l2_flash_ctrl_data - flash control initialization data, filled
+ * basing on the features declared by the LED flash
+ * class driver in the v4l2_flash_config
+ * @config: initialization data for a control
+ * @cid: contains v4l2 flash control id if the config
+ * field was initialized, 0 otherwise
+ */
+struct v4l2_flash_ctrl_data {
+ struct v4l2_ctrl_config config;
+ u32 cid;
+};
+
+struct v4l2_flash_ops {
+ /* setup strobing the flash by hardware pin state assertion */
+ int (*external_strobe_set)(struct v4l2_flash *v4l2_flash,
+ bool enable);
+ /* convert intensity to brightness in a device specific manner */
+ enum led_brightness (*intensity_to_led_brightness)
+ (struct v4l2_flash *v4l2_flash, s32 intensity);
+ /* convert brightness to intensity in a device specific manner */
+ s32 (*led_brightness_to_intensity)
+ (struct v4l2_flash *v4l2_flash, enum led_brightness);
+};
+
+/**
+ * struct v4l2_flash_config - V4L2 Flash sub-device initialization data
+ * @dev_name: the name of the media entity,
+ unique in the system
+ * @torch_intensity: constraints for the LED in torch mode
+ * @indicator_intensity: constraints for the indicator LED
+ * @flash_faults: bitmask of flash faults that the LED flash class
+ device can report; corresponding LED_FAULT* bit
+ definitions are available in the header file
+ <linux/led-class-flash.h>
+ * @has_external_strobe: external strobe capability
+ */
+struct v4l2_flash_config {
+ char dev_name[32];
+ struct led_flash_setting torch_intensity;
+ struct led_flash_setting indicator_intensity;
+ u32 flash_faults;
+ unsigned int has_external_strobe:1;
+};
+
+/**
+ * struct v4l2_flash - Flash sub-device context
+ * @fled_cdev: LED flash class device controlled by this sub-device
+ * @iled_cdev: LED class device representing indicator LED associated
+ * with the LED flash class device
+ * @ops: V4L2 specific flash ops
+ * @sd: V4L2 sub-device
+ * @hdl: flash controls handler
+ * @ctrls: array of pointers to controls, whose values define
+ * the sub-device state
+ */
+struct v4l2_flash {
+ struct led_classdev_flash *fled_cdev;
+ struct led_classdev_flash *iled_cdev;
+ const struct v4l2_flash_ops *ops;
+
+ struct v4l2_subdev sd;
+ struct v4l2_ctrl_handler hdl;
+ struct v4l2_ctrl **ctrls;
+};
+
+static inline struct v4l2_flash *v4l2_subdev_to_v4l2_flash(
+ struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct v4l2_flash, sd);
+}
+
+static inline struct v4l2_flash *v4l2_ctrl_to_v4l2_flash(struct v4l2_ctrl *c)
+{
+ return container_of(c->handler, struct v4l2_flash, hdl);
+}
+
+#if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
+/**
+ * v4l2_flash_init - initialize V4L2 flash led sub-device
+ * @dev: flash device, e.g. an I2C device
+ * @of_node: of_node of the LED, may be NULL if the same as device's
+ * @fled_cdev: LED flash class device to wrap
+ * @iled_cdev: LED flash class device representing indicator LED associated
+ * with fled_cdev, may be NULL
+ * @flash_ops: V4L2 Flash device ops
+ * @config: initialization data for V4L2 Flash sub-device
+ *
+ * Create V4L2 Flash sub-device wrapping given LED subsystem device.
+ *
+ * Returns: A valid pointer, or, when an error occurs, the return
+ * value is encoded using ERR_PTR(). Use IS_ERR() to check and
+ * PTR_ERR() to obtain the numeric return value.
+ */
+struct v4l2_flash *v4l2_flash_init(
+ struct device *dev, struct device_node *of_node,
+ struct led_classdev_flash *fled_cdev,
+ struct led_classdev_flash *iled_cdev,
+ const struct v4l2_flash_ops *ops,
+ struct v4l2_flash_config *config);
+
+/**
+ * v4l2_flash_release - release V4L2 Flash sub-device
+ * @flash: the V4L2 Flash sub-device to release
+ *
+ * Release V4L2 Flash sub-device.
+ */
+void v4l2_flash_release(struct v4l2_flash *v4l2_flash);
+
+#else
+static inline struct v4l2_flash *v4l2_flash_init(
+ struct device *dev, struct device_node *of_node,
+ struct led_classdev_flash *fled_cdev,
+ struct led_classdev_flash *iled_cdev,
+ const struct v4l2_flash_ops *ops,
+ struct v4l2_flash_config *config)
+{
+ return NULL;
+}
+
+static inline void v4l2_flash_release(struct v4l2_flash *v4l2_flash)
+{
+}
+#endif /* CONFIG_V4L2_FLASH_LED_CLASS */
+
+#endif /* _V4L2_FLASH_H */
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index dc20102ff600..4e18318eb425 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -605,6 +605,8 @@ struct v4l2_subdev {
struct video_device *devnode;
/* pointer to the physical device, if any */
struct device *dev;
+ /* The device_node of the subdev, usually the same as dev->of_node. */
+ struct device_node *of_node;
/* Links this subdev to a global subdev_list or @notifier->done list. */
struct list_head async_list;
/* Pointer to respective struct v4l2_async_subdev. */