linux-kernel - Re: [PATCH 1/3] regulator: cros-ec: Use common cros_ec

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Date:   Tue, 7 Jun 2022 07:37:34 -0700
From:   Guenter Roeck <groeck@...gle.com>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Benson Leung <bleung@...omium.org>,
        Stephen Boyd <swboyd@...omium.org>,
        "open list:CHROME HARDWARE PLATFORM SUPPORT" 
        <chrome-platform@...ts.linux.dev>,
        Daisuke Nojiri <dnojiri@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        Lee Jones <lee.jones@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Tzung-Bi Shih <tzungbi@...nel.org>
Subject: Re: [PATCH 1/3] regulator: cros-ec: Use common cros_ec_command()

On Mon, Jun 6, 2022 at 1:19 PM Prashant Malani <pmalani@...omium.org> wrote:
>
> Reduce code duplication by using the common cros_ec_command() function
> instead of the locally defined variant.
>
> Cc: Stephen Boyd <swboyd@...omium.org>
> Signed-off-by: Prashant Malani <pmalani@...omium.org>

Reviewed-by: Guenter Roeck <groeck@...omium.org>

> ---
>  drivers/regulator/cros-ec-regulator.c | 54 ++++++---------------------
>  1 file changed, 12 insertions(+), 42 deletions(-)
>
> diff --git a/drivers/regulator/cros-ec-regulator.c b/drivers/regulator/cros-ec-regulator.c
> index c4754f3cf233..1c5fc74a4776 100644
> --- a/drivers/regulator/cros-ec-regulator.c
> +++ b/drivers/regulator/cros-ec-regulator.c
> @@ -22,36 +22,6 @@ struct cros_ec_regulator_data {
>         u16 num_voltages;
>  };
>
> -static int cros_ec_cmd(struct cros_ec_device *ec, u32 version, u32 command,
> -                      void *outdata, u32 outsize, void *indata, u32 insize)
> -{
> -       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 = command;
> -       msg->outsize = outsize;
> -       msg->insize = insize;
> -
> -       if (outdata && outsize > 0)
> -               memcpy(msg->data, outdata, outsize);
> -
> -       ret = cros_ec_cmd_xfer_status(ec, msg);
> -       if (ret < 0)
> -               goto cleanup;
> -
> -       if (insize)
> -               memcpy(indata, msg->data, insize);
> -
> -cleanup:
> -       kfree(msg);
> -       return ret;
> -}
> -
>  static int cros_ec_regulator_enable(struct regulator_dev *dev)
>  {
>         struct cros_ec_regulator_data *data = rdev_get_drvdata(dev);
> @@ -60,8 +30,8 @@ static int cros_ec_regulator_enable(struct regulator_dev *dev)
>                 .enable = 1,
>         };
>
> -       return cros_ec_cmd(data->ec_dev, 0, EC_CMD_REGULATOR_ENABLE, &cmd,
> -                         sizeof(cmd), NULL, 0);
> +       return cros_ec_command(data->ec_dev, 0, EC_CMD_REGULATOR_ENABLE, &cmd,
> +                              sizeof(cmd), NULL, 0);
>  }
>
>  static int cros_ec_regulator_disable(struct regulator_dev *dev)
> @@ -72,8 +42,8 @@ static int cros_ec_regulator_disable(struct regulator_dev *dev)
>                 .enable = 0,
>         };
>
> -       return cros_ec_cmd(data->ec_dev, 0, EC_CMD_REGULATOR_ENABLE, &cmd,
> -                         sizeof(cmd), NULL, 0);
> +       return cros_ec_command(data->ec_dev, 0, EC_CMD_REGULATOR_ENABLE, &cmd,
> +                              sizeof(cmd), NULL, 0);
>  }
>
>  static int cros_ec_regulator_is_enabled(struct regulator_dev *dev)
> @@ -85,8 +55,8 @@ static int cros_ec_regulator_is_enabled(struct regulator_dev *dev)
>         struct ec_response_regulator_is_enabled resp;
>         int ret;
>
> -       ret = cros_ec_cmd(data->ec_dev, 0, EC_CMD_REGULATOR_IS_ENABLED, &cmd,
> -                         sizeof(cmd), &resp, sizeof(resp));
> +       ret = cros_ec_command(data->ec_dev, 0, EC_CMD_REGULATOR_IS_ENABLED, &cmd,
> +                             sizeof(cmd), &resp, sizeof(resp));
>         if (ret < 0)
>                 return ret;
>         return resp.enabled;
> @@ -112,8 +82,8 @@ static int cros_ec_regulator_get_voltage(struct regulator_dev *dev)
>         struct ec_response_regulator_get_voltage resp;
>         int ret;
>
> -       ret = cros_ec_cmd(data->ec_dev, 0, EC_CMD_REGULATOR_GET_VOLTAGE, &cmd,
> -                         sizeof(cmd), &resp, sizeof(resp));
> +       ret = cros_ec_command(data->ec_dev, 0, EC_CMD_REGULATOR_GET_VOLTAGE, &cmd,
> +                             sizeof(cmd), &resp, sizeof(resp));
>         if (ret < 0)
>                 return ret;
>         return resp.voltage_mv * 1000;
> @@ -138,8 +108,8 @@ static int cros_ec_regulator_set_voltage(struct regulator_dev *dev, int min_uV,
>         if (min_mV > max_mV)
>                 return -EINVAL;
>
> -       return cros_ec_cmd(data->ec_dev, 0, EC_CMD_REGULATOR_SET_VOLTAGE, &cmd,
> -                          sizeof(cmd), NULL, 0);
> +       return cros_ec_command(data->ec_dev, 0, EC_CMD_REGULATOR_SET_VOLTAGE, &cmd,
> +                              sizeof(cmd), NULL, 0);
>  }
>
>  static const struct regulator_ops cros_ec_regulator_voltage_ops = {
> @@ -160,8 +130,8 @@ static int cros_ec_regulator_init_info(struct device *dev,
>         struct ec_response_regulator_get_info resp;
>         int ret;
>
> -       ret = cros_ec_cmd(data->ec_dev, 0, EC_CMD_REGULATOR_GET_INFO, &cmd,
> -                          sizeof(cmd), &resp, sizeof(resp));
> +       ret = cros_ec_command(data->ec_dev, 0, EC_CMD_REGULATOR_GET_INFO, &cmd,
> +                             sizeof(cmd), &resp, sizeof(resp));
>         if (ret < 0)
>                 return ret;
>
> --
> 2.36.1.255.ge46751e96f-goog
>