69 lines
2.4 KiB
Diff
69 lines
2.4 KiB
Diff
|
From d6a4ef0853770f70b7930a2b4cb63cc3219c05a9 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Niklas Cathor <niklas.cathor@gmx.de>
|
||
|
|
Date: Sun, 12 Apr 2020 16:01:13 +0200
|
||
|
|
Subject: [PATCH 2/2] drivers/leds/flashlight: add support for setting mode via
|
||
|
|
sysfs
|
||
|
|
|
||
|
|
The mode can be set by writing one of these strings:
|
||
|
|
- "Off"
|
||
|
|
- "Torch"
|
||
|
|
- "Flash"
|
||
|
|
- "Mixed"
|
||
|
|
to /sys/class/flashlight/<device>/mode.
|
||
|
|
---
|
||
|
|
drivers/leds/flashlight.c | 31 ++++++++++++++++++++++++++++++-
|
||
|
|
1 file changed, 30 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
diff --git a/drivers/leds/flashlight.c b/drivers/leds/flashlight.c
|
||
|
|
index f8fbfb84ca1..5f3510b4aee 100644
|
||
|
|
--- a/drivers/leds/flashlight.c
|
||
|
|
+++ b/drivers/leds/flashlight.c
|
||
|
|
@@ -56,6 +56,35 @@ static ssize_t flashlight_show_mode(struct device *dev,
|
||
|
|
flashlight_mode_string[flashlight_dev->props.mode]);
|
||
|
|
}
|
||
|
|
|
||
|
|
+static ssize_t flashlight_store_mode(struct device *dev,
|
||
|
|
+ struct device_attribute *attr, const char *buf, size_t count)
|
||
|
|
+{
|
||
|
|
+ int mode;
|
||
|
|
+ int n = buf[count - 1] == '\n' ? count - 1 : count;
|
||
|
|
+ struct flashlight_device *flashlight_dev = to_flashlight_device(dev);
|
||
|
|
+
|
||
|
|
+ if (!strncmp(buf, flashlight_mode_string[FLASHLIGHT_MODE_OFF], n)) {
|
||
|
|
+ mode = FLASHLIGHT_MODE_OFF;
|
||
|
|
+ } else if (!strncmp(buf, flashlight_mode_string[FLASHLIGHT_MODE_TORCH], n)) {
|
||
|
|
+ mode = FLASHLIGHT_MODE_TORCH;
|
||
|
|
+ } else if (!strncmp(buf, flashlight_mode_string[FLASHLIGHT_MODE_FLASH], n)) {
|
||
|
|
+ mode = FLASHLIGHT_MODE_FLASH;
|
||
|
|
+ } else if (!strncmp(buf, flashlight_mode_string[FLASHLIGHT_MODE_MIXED], n)) {
|
||
|
|
+ mode = FLASHLIGHT_MODE_MIXED;
|
||
|
|
+ } else {
|
||
|
|
+ pr_err("%s: invalid mode for flashlight.\n", __func__);
|
||
|
|
+ return -1;
|
||
|
|
+ }
|
||
|
|
+ if (flashlight_set_mode(flashlight_dev, mode) != 0) {
|
||
|
|
+ pr_err("%s: failed to set flashlight mode\n", __func__);
|
||
|
|
+ return -1;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ pr_info("%s: set flashlight mode: %s\n",
|
||
|
|
+ __func__, flashlight_mode_string[mode]);
|
||
|
|
+ return count;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
static ssize_t flashlight_show_torch_max_brightness(struct device *dev,
|
||
|
|
struct device_attribute *attr, char *buf)
|
||
|
|
{
|
||
|
|
@@ -229,7 +258,7 @@ static void flashlight_device_release(struct device *dev)
|
||
|
|
static struct device_attribute flashlight_device_attributes[] = {
|
||
|
|
__ATTR(name, 0444, flashlight_show_name, NULL),
|
||
|
|
__ATTR(type, 0444, flashlight_show_type, NULL),
|
||
|
|
- __ATTR(mode, 0444, flashlight_show_mode, NULL),
|
||
|
|
+ __ATTR(mode, 0644, flashlight_show_mode, flashlight_store_mode),
|
||
|
|
__ATTR(torch_max_brightness, 0444,
|
||
|
|
flashlight_show_torch_max_brightness, NULL),
|
||
|
|
__ATTR(strobe_max_brightness, 0444,
|
||
|
|
--
|
||
|
|
2.20.1
|
||
|
|
|