linux-kernel - RE: [RFC PATCH v3 1/2] usb: typec: USB Type-C Port Manager (tcpm)

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Message-ID: <VI1PR0401MB25606B7501E38D64C37E33CE89C10@VI1PR0401MB2560.eurprd04.prod.outlook.com>
Date:   Fri, 30 Sep 2016 06:37:40 +0000
From:   Jun Li <jun.li@....com>
To:     Guenter Roeck <groeck@...omium.org>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
CC:     Chandra Sekhar Anagani <chandra.sekhar.anagani@...el.com>,
        Bruce Ashfield <bruce.ashfield@...driver.com>,
        Bin Gao <bin.gao@...el.com>,
        Pranav Tipnis <pranav.tipnis@...el.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: RE: [RFC PATCH v3 1/2] usb: typec: USB Type-C Port Manager (tcpm)

Hi Guenter,
> -----Original Message-----
> From: linux-usb-owner@...r.kernel.org [mailto:linux-usb-
> owner@...r.kernel.org] On Behalf Of Guenter Roeck
> Sent: Wednesday, August 24, 2016 5:11 AM
> To: Felipe Balbi <felipe.balbi@...ux.intel.com>
> Cc: Chandra Sekhar Anagani <chandra.sekhar.anagani@...el.com>; Bruce
> Ashfield <bruce.ashfield@...driver.com>; Bin Gao <bin.gao@...el.com>;
> Pranav Tipnis <pranav.tipnis@...el.com>; Heikki Krogerus
> <heikki.krogerus@...ux.intel.com>; linux-kernel@...r.kernel.org; linux-
> usb@...r.kernel.org; Guenter Roeck <groeck@...omium.org>
> Subject: [RFC PATCH v3 1/2] usb: typec: USB Type-C Port Manager (tcpm)
> 
...
> diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h
> new file mode 100644
> index 000000000000..6b1679af7a25
> --- /dev/null
> +++ b/include/linux/usb/pd.h

...

> +#define PDO_VAR(min_mv, max_mv, max_ma)					\
> +	((PDO_TYPE_VAR << PDO_TYPE_SHIFT) |				\
> +	 ((((min_mv) / 50) & PDO_VAR_MIN_VOLT_MASK) <<			\
> +	  PDO_VAR_MIN_VOLT_SHIFT) |					\
> +	 ((((max_mv) / 50) & PDO_VAR_MAX_VOLT_MASK) <<			\
> +	  PDO_VAR_MAX_VOLT_SHIFT) |					\
> +	 ((((max_ma) / 50) & PDO_VAR_MAX_CURR_MASK) <<			\

((((max_ma) / 10) & PDO_VAR_MAX_CURR_MASK) <<                  \

Li Jun