linux-kernel - Re: [PATCH v2 12/17] power: supply: cros: Use cros_ec

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Message-ID: <20200224171347.ghei34x5zn5umewg@earth.universe>
Date:   Mon, 24 Feb 2020 18:13:47 +0100
From:   Sebastian Reichel <sre@...nel.org>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel@...r.kernel.org, Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        "open list:POWER SUPPLY CLASS/SUBSYSTEM and DRIVERS" 
        <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v2 12/17] power: supply: cros: Use cros_ec_cmd()

Hi,

On Wed, Feb 05, 2020 at 11:00:18AM -0800, Prashant Malani wrote:
> Replace cros_usbpd_charger_ec_command() with cros_ec_cmd() which does
> the same thing, but is defined in a common location in platform/chrome
> and exposed for other modules to use. This allows us to remove
> cros_usbpd_charger_ec_command() entirely.
> 
> Signed-off-by: Prashant Malani <pmalani@...omium.org>
> ---

Acked-by: Sebastian Reichel <sre@...nel.org>

-- Sebastian

> Changes in v2:
> - Updated to use new function name and parameter list.
> 
>  drivers/power/supply/cros_usbpd-charger.c | 58 ++++-------------------
>  1 file changed, 10 insertions(+), 48 deletions(-)
> 
> diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
> index 30c3d37511c9e1..4631d96fda2ca1 100644
> --- a/drivers/power/supply/cros_usbpd-charger.c
> +++ b/drivers/power/supply/cros_usbpd-charger.c
> @@ -91,46 +91,13 @@ static bool cros_usbpd_charger_port_is_dedicated(struct port_data *port)
>  	return port->port_number >= port->charger->num_usbpd_ports;
>  }
>  
> -static int cros_usbpd_charger_ec_command(struct charger_data *charger,
> -					 unsigned int version,
> -					 unsigned int command,
> -					 void *outdata,
> -					 unsigned int outsize,
> -					 void *indata,
> -					 unsigned int insize)
> -{
> -	struct cros_ec_dev *ec_dev = charger->ec_dev;
> -	struct cros_ec_command *msg;
> -	int ret;
> -
> -	msg = kzalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL);
> -	if (!msg)
> -		return -ENOMEM;
> -
> -	msg->version = version;
> -	msg->command = ec_dev->cmd_offset + command;
> -	msg->outsize = outsize;
> -	msg->insize = insize;
> -
> -	if (outsize)
> -		memcpy(msg->data, outdata, outsize);
> -
> -	ret = cros_ec_cmd_xfer_status(charger->ec_device, msg);
> -	if (ret >= 0 && insize)
> -		memcpy(indata, msg->data, insize);
> -
> -	kfree(msg);
> -	return ret;
> -}
> -
>  static int cros_usbpd_charger_get_num_ports(struct charger_data *charger)
>  {
>  	struct ec_response_charge_port_count resp;
>  	int ret;
>  
> -	ret = cros_usbpd_charger_ec_command(charger, 0,
> -					    EC_CMD_CHARGE_PORT_COUNT,
> -					    NULL, 0, &resp, sizeof(resp));
> +	ret = cros_ec_cmd(charger->ec_device, 0, EC_CMD_CHARGE_PORT_COUNT, NULL,
> +			  0, &resp, sizeof(resp), NULL);
>  	if (ret < 0)
>  		return ret;
>  
> @@ -142,8 +109,8 @@ static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger)
>  	struct ec_response_usb_pd_ports resp;
>  	int ret;
>  
> -	ret = cros_usbpd_charger_ec_command(charger, 0, EC_CMD_USB_PD_PORTS,
> -					    NULL, 0, &resp, sizeof(resp));
> +	ret = cros_ec_cmd(charger->ec_device, 0, EC_CMD_USB_PD_PORTS, NULL, 0,
> +			  &resp, sizeof(resp), NULL);
>  	if (ret < 0)
>  		return ret;
>  
> @@ -159,10 +126,8 @@ static int cros_usbpd_charger_get_discovery_info(struct port_data *port)
>  
>  	req.port = port->port_number;
>  
> -	ret = cros_usbpd_charger_ec_command(charger, 0,
> -					    EC_CMD_USB_PD_DISCOVERY,
> -					    &req, sizeof(req),
> -					    &resp, sizeof(resp));
> +	ret = cros_ec_cmd(charger->ec_device, 0, EC_CMD_USB_PD_DISCOVERY, &req,
> +			  sizeof(req), &resp, sizeof(resp), NULL);
>  	if (ret < 0) {
>  		dev_err(charger->dev,
>  			"Unable to query discovery info (err:0x%x)\n", ret);
> @@ -189,10 +154,8 @@ static int cros_usbpd_charger_get_power_info(struct port_data *port)
>  	int ret;
>  
>  	req.port = port->port_number;
> -	ret = cros_usbpd_charger_ec_command(charger, 0,
> -					    EC_CMD_USB_PD_POWER_INFO,
> -					    &req, sizeof(req),
> -					    &resp, sizeof(resp));
> +	ret = cros_ec_cmd(charger->ec_device, 0, EC_CMD_USB_PD_POWER_INFO, &req,
> +			  sizeof(req), &resp, sizeof(resp), NULL);
>  	if (ret < 0) {
>  		dev_err(dev, "Unable to query PD power info (err:0x%x)\n", ret);
>  		return ret;
> @@ -334,9 +297,8 @@ static int cros_usbpd_charger_set_ext_power_limit(struct charger_data *charger,
>  	req.current_lim = current_lim;
>  	req.voltage_lim = voltage_lim;
>  
> -	ret = cros_usbpd_charger_ec_command(charger, 0,
> -					    EC_CMD_EXTERNAL_POWER_LIMIT,
> -					    &req, sizeof(req), NULL, 0);
> +	ret = cros_ec_cmd(charger->ec_device, 0, EC_CMD_EXTERNAL_POWER_LIMIT,
> +			  &req, sizeof(req), NULL, 0, NULL);
>  	if (ret < 0)
>  		dev_err(charger->dev,
>  			"Unable to set the 'External Power Limit': %d\n", ret);
> -- 
> 2.25.0.341.g760bfbb309-goog
> 

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