Jacek
On 9/21/19 1:08 PM, Jacek Anaszewski wrote:
Dan,
One more remark below.
On 9/20/19 7:41 PM, Dan Murphy wrote:
Introduce a multicolor class that groups colored LEDs
within a LED node.
The framework allows for dynamically setting individual LEDs
or setting brightness levels of LEDs and updating them virtually
simultaneously.
Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
---
drivers/leds/Kconfig | 10 +
drivers/leds/Makefile | 1 +
drivers/leds/led-class-multicolor.c | 316 +++++++++++++++++++++++++++
include/linux/led-class-multicolor.h | 76 +++++++
4 files changed, 403 insertions(+)
create mode 100644 drivers/leds/led-class-multicolor.c
create mode 100644 include/linux/led-class-multicolor.h
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 6e7703fd03d0..cfb1ebb6517f 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -30,6 +30,16 @@ config LEDS_CLASS_FLASH
[...]
+static int led_multicolor_init_color_dir(struct led_classdev_mc_data *data,
+ struct led_classdev_mc *mcled_cdev)
+{
+ struct led_classdev *led_cdev = mcled_cdev->led_cdev;
+ u32 color_id;
+ int ret;
+ int i, j = 0;
+
+ data->mcled_cdev = mcled_cdev;
+
+ ret = sysfs_create_group(&led_cdev->dev->kobj, &led_color_group);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < LED_COLOR_ID_MAX; i++) {
+ color_id = (mcled_cdev->available_colors & (1 << i));
Please use bitops for accessing available_colors.
+ if (color_id) {
Here you need: if (test_bit(i, &mcled_cdev->available_colors))
Then I can get rid of the color_id and just use test_bit.
Then your other request for color_mask is not needed because we can just
test against the incremental 'i'
Dan
+ ret = led_multicolor_init_color(data, mcled_cdev, i, j);
+ if (ret)
+ break;
+
+ j++;
+ }
+ }
+
+ return ret;
+}
