Re: [PATCH v4 13/24] hwmon: pwm-fan: use pwm_get/set_default_xxx() helpers where appropriate

Guenter Roeck
2015-11-16T16:00:54Z

On 11/16/2015 12:56 AM, Boris Brezillon wrote:
> pwm_set/get_default_xxx() helpers have been introduced to differentiate
> the default PWM states (those retrieved through DT, PWM lookup table or
> statically assigned by the driver) and the current ones.
> Make use of those helpers where appropriate.
>
> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
> ---
> drivers/hwmon/pwm-fan.c | 15 +++++++++------
> 1 file changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
> index 105b964..989d7b4 100644
> --- a/drivers/hwmon/pwm-fan.c
> +++ b/drivers/hwmon/pwm-fan.c
> @@ -47,8 +47,9 @@ static int __set_pwm(struct pwm_fan_ctx *ctx, unsigned long pwm)
> if (ctx->pwm_value == pwm)
> goto exit_set_pwm_err;
>
> - duty = DIV_ROUND_UP(pwm * (pwm_get_period((ctx->pwm)) - 1), MAX_PWM);
> - ret = pwm_config(ctx->pwm, duty, pwm_get_period((ctx->pwm)));
> + duty = DIV_ROUND_UP(pwm * (pwm_get_default_period((ctx->pwm)) - 1),
> + MAX_PWM);
> + ret = pwm_config(ctx->pwm, duty, pwm_get_default_period((ctx->pwm)));

Same here - please no unnecessary ( ) [ which were first introduced by
the other patch ].

Guenter

> if (ret)
> goto exit_set_pwm_err;
>
> @@ -234,10 +235,11 @@ static int pwm_fan_probe(struct platform_device *pdev)
> platform_set_drvdata(pdev, ctx);
>
> /* Set duty cycle to maximum allowed */
> - duty_cycle = pwm_get_period((ctx->pwm)) - 1;
> + duty_cycle = pwm_get_default_period((ctx->pwm)) - 1;
> ctx->pwm_value = MAX_PWM;
>
> - ret = pwm_config(ctx->pwm, duty_cycle, pwm_get_period((ctx->pwm)));
> + ret = pwm_config(ctx->pwm, duty_cycle,
> + pwm_get_default_period((ctx->pwm)));
> if (ret) {
> dev_err(&pdev->dev, "Failed to configure PWM\n");
> return ret;
> @@ -309,9 +311,10 @@ static int pwm_fan_resume(struct device *dev)
> if (ctx->pwm_value == 0)
> return 0;
>
> - duty = DIV_ROUND_UP(ctx->pwm_value * (pwm_get_period((ctx->pwm)) - 1),
> + duty = DIV_ROUND_UP(ctx->pwm_value *
> + (pwm_get_default_period((ctx->pwm)) - 1),
> MAX_PWM);
> - ret = pwm_config(ctx->pwm, duty, pwm_get_period((ctx->pwm)));
> + ret = pwm_config(ctx->pwm, duty, pwm_get_default_period((ctx->pwm)));
> if (ret)
> return ret;
> return pwm_enable(ctx->pwm);
>