linux-kernel - Re: [PATCH v2 1/3] mfd: cros_ec: Add USBPD charger commands and struct definitions.

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Date:   Tue, 1 May 2018 09:29:05 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     Sebastian Reichel <sre@...nel.org>,
        Gwendal Grignou <gwendal@...omium.org>,
        Sameer Nanda <snanda@...omium.org>, linux-pm@...r.kernel.org,
        Guenter Roeck <groeck@...omium.org>,
        linux-kernel@...r.kernel.org, Benson Leung <bleung@...omium.org>,
        miguel.ojeda.sandonis@...il.com
Subject: Re: [PATCH v2 1/3] mfd: cros_ec: Add USBPD charger commands and
 struct definitions.

On Mon, 30 Apr 2018, Enric Balletbo i Serra wrote:

> From: Sameer Nanda <snanda@...omium.org>
> 
> The USBPD charger driver gets information from the ChromeOS EC, this
> patch adds the USBPD charger definitions needed by this driver.
> 
> Signed-off-by: Sameer Nanda <snanda@...omium.org>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> ---
> 
> Changes in v2: None
> 
>  include/linux/mfd/cros_ec_commands.h | 132 ++++++++++++++++++++++++++-
>  1 file changed, 128 insertions(+), 4 deletions(-)
> 
> diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
> index f2edd9969b40..94dcf331796c 100644
> --- a/include/linux/mfd/cros_ec_commands.h
> +++ b/include/linux/mfd/cros_ec_commands.h

[...]

> +struct ec_response_pd_log {
> +	uint32_t timestamp; /* relative timestamp in milliseconds */
> +	uint8_t type;       /* event type : see PD_EVENT_xx below */
> +	uint8_t size_port;  /* [7:5] port number [4:0] payload size in bytes */
> +	uint16_t data;      /* type-defined data payload */
> +	uint8_t payload[0]; /* optional additional data payload: 0..16 bytes */
> +} __packed;

I think this whole file should be converted to Kerneldoc format.

[...]

> +/*
> + * PD_EVENT_MCU_CHARGE event definition :
> + * the payload is "struct usb_chg_measures"
> + * the data field contains the port state flags as defined below :
> + */
> +/* Port partner is a dual role device */
> +#define CHARGE_FLAGS_DUAL_ROLE         (1 << 15)

BIT()?

> +/* Port is the pending override port */
> +#define CHARGE_FLAGS_DELAYED_OVERRIDE  (1 << 14)
> +/* Port is the override port */
> +#define CHARGE_FLAGS_OVERRIDE          (1 << 13)

[...]

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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