Re: [PATCH] hwmon: (oxp-sensors) Add AYANEO AIR and AIR Pro

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On Tue, Dec 13, 2022 at 02:55:11PM -0800, Derek J. Clark wrote:
> Adds support for the AYANEO AIR and AYANEO AIR Pro models of handheld

s/Adds/Add/

> devices. These devices use the same EC registers and logic as the One X
> Player mini AMD. Previous AYANEO models are not supported as they use a
> different EC and do not have the necessary fan speed write enable and
> setting registers. Tested on Aya Neo AIR. AIR Pro model EC functionality
> and DMI data were verified using command line tools by another user.
> 
> The added devices are:
> - AYANEO AIR (AMD 5560U)
> - AYANEO AIR Pro (AMD 5560U)
> - AYANEO AIR Pro (AMD 5825U)
> 
> Signed-off-by: Derek J. Clark <derekjohn.clark@xxxxxxxxx>
> ---
>  Documentation/hwmon/oxp-sensors.rst | 17 +++++----
>  MAINTAINERS                         |  6 ++++
>  drivers/hwmon/oxp-sensors.c         | 54 ++++++++++++++++++++++++-----
>  3 files changed, 63 insertions(+), 14 deletions(-)
> 
> diff --git a/Documentation/hwmon/oxp-sensors.rst b/Documentation/hwmon/oxp-sensors.rst
> index 39c588ec5c50..b93892c892c5 100644
> --- a/Documentation/hwmon/oxp-sensors.rst
> +++ b/Documentation/hwmon/oxp-sensors.rst
> @@ -3,18 +3,21 @@
>  Kernel driver oxp-sensors
>  =========================
>  
> -Author:
> +Authors:
> +    - Derek John Clark <derekjohn.clark@xxxxxxxxx>
>      - Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>
>  
>  Description:
>  ------------
>  
> -One X Player devices from One Netbook provide fan readings and fan control
> -through its Embedded Controller.
> +Handheld devices from One Netbook and Aya Neo provide fan readings and fan
> +control through their Embedded Controllers.
>  
> -Currently only supports AMD boards from the One X Player and AOK ZOE lineup.
> -Intel boards could be supported if we could figure out the EC registers and
> -values to write to since the EC layout and model is different.
> +Currently only supports AMD boards from One X Player, AOK ZOE, and some Aya
> +Neo devices. One X PLayer Intel boards could be supported if we could figure
> +out the EC registers and values to write to since the EC layout and model is
> +different. Aya Neo devices preceding the AIR may not be usable as the EC model
> +is different and do not appear to have manual control capabiltities.
>  
>  Supported devices
>  -----------------
> @@ -22,6 +25,8 @@ Supported devices
>  Currently the driver supports the following handhelds:
>  
>   - AOK ZOE A1
> + - Aya Neo AIR
> + - Aya Neo AIR Pro
>   - OneXPlayer AMD
>   - OneXPlayer mini AMD
>   - OneXPlayer mini AMD PRO
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 90220659206c..ba03a2983045 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -15345,6 +15345,12 @@ S:	Maintained
>  F:	drivers/mtd/nand/onenand/
>  F:	include/linux/mtd/onenand*.h
>  
> +ONEXPLAYER FAN DRIVER
> +M:	Derek John Clark <derekjohn.clark@xxxxxxxxx>
> +L:	linux-hwmon@xxxxxxxxxxxxxxx
> +S:	Maintained
> +F:	drivers/hwmon/oxp-sensors.c
> +
This doesn't make sense. Why add another entry for the same driver ?
Add yourself as second maintianer, no problem with that, but don't
add a second entry for the same driver.

>  ONEXPLAYER FAN DRIVER
>  M:	Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>
>  L:	linux-hwmon@xxxxxxxxxxxxxxx
> diff --git a/drivers/hwmon/oxp-sensors.c b/drivers/hwmon/oxp-sensors.c
> index f84ec8f8eda9..7adc0199ea66 100644
> --- a/drivers/hwmon/oxp-sensors.c
> +++ b/drivers/hwmon/oxp-sensors.c
> @@ -1,12 +1,12 @@
>  // SPDX-License-Identifier: GPL-2.0+
>  /*
> - * Platform driver for OXP Handhelds that expose fan reading and control
> - * via hwmon sysfs.
> + * Platform driver for Handhelds that expose fan reading and control via

That is too generic. It is not a driver which supports _all_ handhelds.

> + * hwmon sysfs.
>   *
> - * Old boards have the same DMI strings and they are told appart by the
> - * boot cpu vendor (Intel/AMD). Currently only AMD boards are supported
> - * but the code is made to be simple to add other handheld boards in the
> - * future.
> + * Old OXP boards have the same DMI strings and they are told appart by
> + * the boot cpu vendor (Intel/AMD). Currently only AMD boards are
> + * supported but the code is made to be simple to add other handheld
> + * boards in the future.
>   * Fan control is provided via pwm interface in the range [0-255].
>   * Old AMD boards use [0-100] as range in the EC, the written value is
>   * scaled to accommodate for that. Newer boards like the mini PRO and
> @@ -42,6 +42,8 @@ static bool unlock_global_acpi_lock(void)
>  
>  enum oxp_board {
>  	aok_zoe_a1 = 1,
> +	aya_neo_air,
> +	aya_neo_air_pro,
>  	oxp_mini_amd,
>  	oxp_mini_amd_pro,
>  };
> @@ -60,6 +62,20 @@ static const struct dmi_system_id dmi_table[] = {
>  		},
>  		.driver_data = (void *) &(enum oxp_board) {aok_zoe_a1},
>  	},
> +	{
> +		.matches = {
> +			DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"),
> +			DMI_EXACT_MATCH(DMI_BOARD_NAME, "AIR"),
> +		},
> +		.driver_data = (void *) &(enum oxp_board) {aya_neo_air},
> +	},
> +	{
> +		.matches = {
> +			DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"),
> +			DMI_EXACT_MATCH(DMI_BOARD_NAME, "AIR Pro"),
> +		},
> +		.driver_data = (void *) &(enum oxp_board) {aya_neo_air_pro},
> +	},
>  	{
>  		.matches = {
>  			DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
> @@ -161,8 +177,19 @@ static int oxp_platform_read(struct device *dev, enum hwmon_sensor_types type,
>  			ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val);
>  			if (ret)
>  				return ret;
> -			if (board == oxp_mini_amd)
> +			switch (board) {
> +			case aok_zoe_a1:
> +				break;
> +			case aya_neo_air:
> +			case aya_neo_air_pro:
> +			case oxp_mini_amd:
>  				*val = (*val * 255) / 100;
> +				break;
> +			case oxp_mini_amd_pro:
> +				break;
> +			default:
> +				break;

case statements doing nothing can be bundled.

> +			}
>  			return 0;
>  		case hwmon_pwm_enable:
>  			return read_from_ec(OXP_SENSOR_PWM_ENABLE_REG, 1, val);
> @@ -191,8 +218,19 @@ static int oxp_platform_write(struct device *dev, enum hwmon_sensor_types type,
>  		case hwmon_pwm_input:
>  			if (val < 0 || val > 255)
>  				return -EINVAL;
> -			if (board == oxp_mini_amd)
> +			switch (board) {
> +			case aok_zoe_a1:
> +				break;
> +			case aya_neo_air:
> +			case aya_neo_air_pro:
> +			case oxp_mini_amd:
>  				val = (val * 100) / 255;
> +				break;
> +			case oxp_mini_amd_pro:
> +				break;
> +			default:
> +				break;

Same as above.

> +			}
>  			return write_to_ec(dev, OXP_SENSOR_PWM_REG, val);
>  		default:
>  			break;



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