linux-kernel - Re: [PATCH v8 08/14] platform/x86: oxpec: Move pwm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <c3b89444-bc78-4e1d-573e-b2f9af9892c2@linux.intel.com>
Date: Fri, 11 Apr 2025 18:16:58 +0300 (EEST)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Antheas Kapenekakis <lkml@...heas.dev>
cc: platform-driver-x86@...r.kernel.org, linux-hwmon@...r.kernel.org, 
    linux-doc@...r.kernel.org, linux-pm@...r.kernel.org, 
    Guenter Roeck <linux@...ck-us.net>, Jean Delvare <jdelvare@...e.com>, 
    Jonathan Corbet <corbet@....net>, 
    Joaquin Ignacio Aramendia <samsagax@...il.com>, 
    Derek J Clark <derekjohn.clark@...il.com>, 
    Kevin Greenberg <kdgreenberg234@...tonmail.com>, 
    Joshua Tam <csinaction@...me>, Parth Menon <parthasarathymenon@...il.com>, 
    Eileen <eileen@...-netbook.com>, LKML <linux-kernel@...r.kernel.org>, 
    sre@...nel.org, linux@...ssschuh.net, Hans de Goede <hdegoede@...hat.com>, 
    mario.limonciello@....com
Subject: Re: [PATCH v8 08/14] platform/x86: oxpec: Move pwm_enable read to
 its own function

On Sat, 22 Mar 2025, Antheas Kapenekakis wrote:

> Currently, this driver breaks ABI by using auto as 0 and manual as 1.
> However, for pwm_enable, 0 is full speed, 1 is manual, and 2 is auto.
> For the correction to be possible, this means that the pwm_enable
> endpoint will need access to both pwm enable and value (as for
> the 0th value, the fan needs to be set to full power).
> 
> Therefore, begin by moving the current pwm_enable read to its own
> function, oxp_pwm_enable.
> 
> Reviewed-by: Derek J. Clark <derekjohn.clark@...il.com>
> Reviewed-by: Thomas Weißschuh <linux@...ssschuh.net>
> Signed-off-by: Antheas Kapenekakis <lkml@...heas.dev>
> ---
>  drivers/platform/x86/oxpec.c | 50 +++++++++++++++++++-----------------
>  1 file changed, 27 insertions(+), 23 deletions(-)
> 
> diff --git a/drivers/platform/x86/oxpec.c b/drivers/platform/x86/oxpec.c
> index 384d525402def..2f31490fde64c 100644
> --- a/drivers/platform/x86/oxpec.c
> +++ b/drivers/platform/x86/oxpec.c
> @@ -559,6 +559,32 @@ static int oxp_pwm_disable(void)
>  	}
>  }
>  
> +static int oxp_pwm_read(long *val)
> +{
> +	switch (board) {
> +	case orange_pi_neo:
> +		return read_from_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, 1, val);
> +	case aok_zoe_a1:
> +	case aya_neo_2:
> +	case aya_neo_air:
> +	case aya_neo_air_1s:
> +	case aya_neo_air_plus_mendo:
> +	case aya_neo_air_pro:
> +	case aya_neo_flip:
> +	case aya_neo_geek:
> +	case aya_neo_kun:
> +	case oxp_2:
> +	case oxp_fly:
> +	case oxp_mini_amd:
> +	case oxp_mini_amd_a07:
> +	case oxp_mini_amd_pro:
> +	case oxp_x1:
> +		return read_from_ec(OXP_SENSOR_PWM_ENABLE_REG, 1, val);
> +	default:
> +		return -EOPNOTSUPP;
> +	}
> +}
> +
>  /* Callbacks for hwmon interface */
>  static umode_t oxp_ec_hwmon_is_visible(const void *drvdata,
>  				       enum hwmon_sensor_types type, u32 attr, int channel)
> @@ -656,29 +682,7 @@ static int oxp_platform_read(struct device *dev, enum hwmon_sensor_types type,
>  			}
>  			return 0;
>  		case hwmon_pwm_enable:
> -			switch (board) {
> -			case orange_pi_neo:
> -				return read_from_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, 1, val);
> -			case aok_zoe_a1:
> -			case aya_neo_2:
> -			case aya_neo_air:
> -			case aya_neo_air_1s:
> -			case aya_neo_air_plus_mendo:
> -			case aya_neo_air_pro:
> -			case aya_neo_flip:
> -			case aya_neo_geek:
> -			case aya_neo_kun:
> -			case oxp_2:
> -			case oxp_fly:
> -			case oxp_mini_amd:
> -			case oxp_mini_amd_a07:
> -			case oxp_mini_amd_pro:
> -			case oxp_x1:
> -				return read_from_ec(OXP_SENSOR_PWM_ENABLE_REG, 1, val);
> -			default:
> -				break;
> -			}
> -			break;
> +			return oxp_pwm_read(val);
>  		default:
>  			break;
>  		}
> 

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

-- 
 i.