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SubjectRe: [PATCH v3 3/6] asus-wmi: Implement TUF laptop keyboard power states
On Tue, Aug 9, 2022 at 4:51 AM Luke D. Jones <luke@ljones.dev> wrote:
>
> Adds support for setting various power states of TUF keyboards.
> These states are combinations of:
> - boot, set if a boot animation is shown on keyboard
> - awake, set if the keyboard LEDs are visible while laptop is on
> - sleep, set if an animation is displayed while the laptop is suspended
> - keyboard (unknown effect)
>
> Adds two sysfs attributes to asus-nb-wmi:
> - keyboard_rgb_state
> - keyboard_rgb_state_index

...

> until the keyboard_rgb_save attribute is set (write-only):
> * 0 - slow
> * 1 - medium
> - * 2 - fast
> \ No newline at end of file

^^^

> + * 2 - fast
> +
> +What: /sys/devices/platform/<platform>/keyboard_rgb_state
> +Date: Aug 2022
> +KernelVersion: 6.1
> +Contact: "Luke Jones" <luke@ljones.dev>
> +Description:
> + Set some RGB keyboard power states (write-only).
> +
> + The accepted input is "boot awake sleep keyboard", where "n n n n n"
> + options are:
> + * save - 0 or 1, if 0 then settings are not retained on boot
> + * boot - 0 or 1, controls if a boot animation is shown
> + * awake - 0 or 1, controls if the keyboard LED are on during awake
> + * sleep - 0 or 1, controls if a suspended animation is shown.
> + This is only active if the AC is connected.
> + * keyboard - 0 or 1, unknown what effect this really has
> \ No newline at end of file

^^^

Be sure of not repeating the same mistake. I.e. add a newline as suggested.


> + flags = 0;

Seems you ignored my comment here...

> + if (sscanf(buf, "%hhd %hhd %hhd %hhd %hhd", &save, &boot, &awake, &sleep, &keyboard) != 5
> + return -EINVAL;

> + save = save == 0 ? 0x0100 : 0x0000;

...and here...

> + if (boot)
> + flags |= 0x02;
> + if (awake)
> + flags |= 0x08;
> + if (sleep)
> + flags |= 0x20;
> + if (keyboard)
> + flags |= 0x80;

...and here.

...

> + err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS,
> + ASUS_WMI_DEVID_TUF_RGB_STATE, 0xBD | save | (flags << 16), 0, &ret);
> + if (err)
> + return err;

Also see another comment about how ret is supposed to be used.

--
With Best Regards,
Andy Shevchenko

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