lkml.org 
[lkml]   [2023]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2] Add multicolor support to BlinkM LED driver
On Tue, 27 Dec 2022, Joseph Strauss wrote:

> Added multicolor support to the BlinkM driver, making it easier to
> control from userspace. The BlinkM LED is a programmable RGB LED. The
> driver currently supports only the regular LED sysfs class, resulting in
> the creation of three distinct classes, one for red, green, and blue.
> The user then has to input three values into the three seperate
> brightness files within those classes. The multicolor LED framework
> makes the device easier to control with the multi_intensity file: the
> user can input three values at once to form a color, while still
> controlling the lightness with the brightness file.
>
> The main struct blinkm_led has changed slightly. A struct
> led_classdev_mc has been added to represent the multicolor sysfs class,
> and an additional struct led_classdev pointer has been added for
> convenience, which points to the struct led_classdev within struct
> led_classdev_mc. The struct led_classdev for the regular sysfs classes
> remain. Additionally, a field representing the multicolor LED has been
> added to the struct blinkm_data, seperate from the blinkm_leds[3] array.
>
> In the blinkm_probe function, the multicolor LED class is registered
> after the regular LED classes. The blinkm_set_mc_brightness() function
> had to be added to calculate the three color components and then set the
> fields of the blinkm_data structure accordingly.
>
> Signed-off-by: Joseph Strauss <jstrauss@mailbox.org>
> ---
> Changes in v2:
> - Replaced instances of the constant 3 with NUM_LEDS, where applicable
> - Fixed formatting errors
> - Replaced loop inside of blinkm_set_mc_brightness() with equivalent
> statements
> - Changed id of multicolor class from 4 to 3
> - Replaced call to devm_kmalloc_array() with devm_kcalloc()
>
> Documentation/leds/leds-blinkm.rst | 26 +++++-
> drivers/leds/Kconfig | 1 +
> drivers/leds/leds-blinkm.c | 143 +++++++++++++++++++++++------
> 3 files changed, 137 insertions(+), 33 deletions(-)

Another one for Pavel until I can build some knowledge.

--
Lee Jones [李琼斯]

\
 
 \ /
  Last update: 2023-03-26 23:33    [W:0.109 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site