Guido Günther
e47ce8e09e
Camera flashes are also exported via the LED subsystem. We use a separate LED type so they're not picked by default. We don't use them as fallbacks either.
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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* Copyright (C) 2024 The Phosh Developers
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*
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* SPDX-License-Identifier: GPL-3.0+
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* Author: Guido Günther <agx@sigxcpu.org>
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*
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* See Documentation/ABI/testing/sysfs-class-led-trigger-pattern
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*/
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#define G_LOG_DOMAIN "fbd-dev-led-flash"
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#include "fbd-dev-led-priv.h"
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#include "fbd-dev-led-flash.h"
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#include "fbd-enums.h"
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#include "fbd-udev.h"
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#include <gio/gio.h>
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/**
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* fbd-dev-led-flash:
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*
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* The LED of a camera flash
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*/
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typedef struct _FbdDevLedFlash {
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FbdDevLed parent;
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} FbdDevLedFlash;
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G_DEFINE_TYPE (FbdDevLedFlash, fbd_dev_led_flash, FBD_TYPE_DEV_LED)
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static gboolean
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fbd_dev_led_flash_probe (FbdDevLed *led, GError **error)
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{
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GUdevDevice *dev = fbd_dev_led_get_device (led);
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const gchar *name, *path;
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guint max_brightness;
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name = g_udev_device_get_name (dev);
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if (!g_udev_device_get_sysfs_attr (dev, "flash_strobe") ||
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!g_udev_device_get_sysfs_attr (dev, "flash_brightness")) {
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED, "%s is no flash LED", name);
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return FALSE;
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}
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max_brightness = g_udev_device_get_sysfs_attr_as_int (dev, LED_MAX_BRIGHTNESS_ATTR);
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if (!max_brightness) {
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED, "%s has no max_brightness", name);
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return FALSE;
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}
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fbd_dev_led_set_max_brightness (led, max_brightness);
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fbd_dev_led_set_supported_color (led, FBD_FEEDBACK_LED_COLOR_FLASH);
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path = g_udev_device_get_sysfs_path (dev);
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g_debug ("LED at '%s' usable as flash", path);
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return TRUE;
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}
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static void
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fbd_dev_led_flash_class_init (FbdDevLedFlashClass *klass)
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{
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FbdDevLedClass *fbd_dev_led_class = FBD_DEV_LED_CLASS (klass);
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fbd_dev_led_class->probe = fbd_dev_led_flash_probe;
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}
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static void
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fbd_dev_led_flash_init (FbdDevLedFlash *self)
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{
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}
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FbdDevLed *
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fbd_dev_led_flash_new (GUdevDevice *dev, GError **err)
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{
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return g_initable_new (FBD_TYPE_DEV_LED_FLASH, NULL, err, "dev", dev, NULL);
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}
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