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From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>
Date: Thu, 4 Apr 2024 12:33:33 +0300 (EEST)
To: "Luke D. Jones" <luke@ljones.dev>, Hans de Goede <hdegoede@redhat.com>
cc: corentin.chary@gmail.com, platform-driver-x86@vger.kernel.org, 
    LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 1/9] platform/x86: asus-wmi: add support for 2024 ROG
 Mini-LED
In-Reply-To: <20240404001652.86207-2-luke@ljones.dev>
Message-ID: <590fea48-ac39-4db4-47c5-366a6814c9b3@linux.intel.com>
References: <20240404001652.86207-1-luke@ljones.dev> <20240404001652.86207-2-luke@ljones.dev>
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On Thu, 4 Apr 2024, Luke D. Jones wrote:

> Support the 2024 mini-led backlight and adjust the related functions
> to select the relevant dev-id. Also add `available_mini_led_mode` to the
> platform sysfs since the available mini-led levels can be different.
>=20
> Reviewed-by: Ilpo J=C3=A4rvinen <ilpo.jarvinen@linux.intel.com>
> signed-off-by: Luke D. Jones <luke@ljones.dev>
> ---
>  .../ABI/testing/sysfs-platform-asus-wmi       |  8 ++
>  drivers/platform/x86/asus-wmi.c               | 96 +++++++++++++++++--
>  include/linux/platform_data/x86/asus-wmi.h    |  1 +
>  3 files changed, 95 insertions(+), 10 deletions(-)
>=20
> diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Document=
ation/ABI/testing/sysfs-platform-asus-wmi
> index 8a7e25bde085..ef1ac1a20a71 100644
> --- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
> +++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
> @@ -126,6 +126,14 @@ Description:
>  =09=09Change the mini-LED mode:
>  =09=09=09* 0 - Single-zone,
>  =09=09=09* 1 - Multi-zone
> +=09=09=09* 2 - Multi-zone strong (available on newer generation mini-led=
)
> +
> +What:=09=09/sys/devices/platform/<platform>/available_mini_led_mode
> +Date:=09=09Apr 2024
> +KernelVersion:=096.10
> +Contact:=09"Luke Jones" <luke@ljones.dev>
> +Description:
> +=09=09List the available mini-led modes.
> =20
>  What:=09=09/sys/devices/platform/<platform>/ppt_pl1_spl
>  Date:=09=09Jun 2023
> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-=
wmi.c
> index 3f07bbf809ef..aa2a3b402e33 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -126,6 +126,17 @@ module_param(fnlock_default, bool, 0444);
>  #define ASUS_SCREENPAD_BRIGHT_MAX 255
>  #define ASUS_SCREENPAD_BRIGHT_DEFAULT 60
> =20
> +#define ASUS_MINI_LED_MODE_MASK=09=090x03
> +/* Standard modes for devices with only on/off */
> +#define ASUS_MINI_LED_OFF=09=090x00
> +#define ASUS_MINI_LED_ON=09=090x01
> +/* New mode on some devices, define here to clarify remapping later */
> +#define ASUS_MINI_LED_STRONG_MODE=090x02
> +/* New modes for devices with 3 mini-led mode types */
> +#define ASUS_MINI_LED_2024_WEAK=09=090x00
> +#define ASUS_MINI_LED_2024_STRONG=090x01
> +#define ASUS_MINI_LED_2024_OFF=09=090x02
> +
>  /* Controls the power state of the USB0 hub on ROG Ally which input is o=
n */
>  #define ASUS_USB0_PWR_EC0_CSEE "\\_SB.PCI0.SBRG.EC0.CSEE"
>  /* 300ms so far seems to produce a reliable result on AC and battery */
> @@ -288,7 +299,7 @@ struct asus_wmi {
>  =09bool battery_rsoc_available;
> =20
>  =09bool panel_overdrive_available;
> -=09bool mini_led_mode_available;
> +=09u32 mini_led_dev_id;
> =20
>  =09struct hotplug_slot hotplug_slot;
>  =09struct mutex hotplug_lock;
> @@ -2108,13 +2119,33 @@ static ssize_t mini_led_mode_show(struct device *=
dev,
>  =09=09=09=09   struct device_attribute *attr, char *buf)
>  {
>  =09struct asus_wmi *asus =3D dev_get_drvdata(dev);
> -=09int result;
> +=09u32 value;
> +=09int err;
> =20
> -=09result =3D asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_MINI_LED=
_MODE);
> -=09if (result < 0)
> -=09=09return result;
> +=09err =3D asus_wmi_get_devstate(asus, asus->mini_led_dev_id, &value);
> +=09if (err < 0)
> +=09=09return err;
> +=09value =3D value & ASUS_MINI_LED_MODE_MASK;
> =20
> -=09return sysfs_emit(buf, "%d\n", result);
> +=09/*
> +=09 * Remap the mode values to match previous generation mini-led. The l=
ast gen
> +=09 * WMI 0 =3D=3D off, while on this version WMI 2 =3D=3Doff (flipped).
> +=09 */
> +=09if (asus->mini_led_dev_id =3D=3D ASUS_WMI_DEVID_MINI_LED_MODE2) {
> +=09=09switch (value) {
> +=09=09case ASUS_MINI_LED_2024_WEAK:
> +=09=09=09value =3D ASUS_MINI_LED_ON;
> +=09=09=09break;
> +=09=09case ASUS_MINI_LED_2024_STRONG:
> +=09=09=09value =3D ASUS_MINI_LED_STRONG_MODE;
> +=09=09=09break;
> +=09=09case ASUS_MINI_LED_2024_OFF:
> +=09=09=09value =3D ASUS_MINI_LED_OFF;
> +=09=09=09break;
> +=09=09}
> +=09}
> +
> +=09return sysfs_emit(buf, "%d\n", value);
>  }
> =20
>  static ssize_t mini_led_mode_store(struct device *dev,
> @@ -2130,11 +2161,32 @@ static ssize_t mini_led_mode_store(struct device =
*dev,
>  =09if (result)
>  =09=09return result;
> =20
> -=09if (mode > 1)
> +=09if (asus->mini_led_dev_id =3D=3D ASUS_WMI_DEVID_MINI_LED_MODE &&
> +=09=09mode > ASUS_MINI_LED_ON)
> +=09=09return -EINVAL;
> +=09if (asus->mini_led_dev_id =3D=3D ASUS_WMI_DEVID_MINI_LED_MODE2 &&
> +=09=09mode > ASUS_MINI_LED_STRONG_MODE)

The if condition continations should not be indented to the same level as=
=20
its statement block because it confuses the reader. Hans might be able to=
=20
fix this while applying though so I'm not sure if it's necessary to send a=
=20
new version just because of this.

--=20
 i.
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