diff options
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/sandbox_pwm.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/pwm/sandbox_pwm.c b/drivers/pwm/sandbox_pwm.c index 4b50b19c61..28988187e0 100644 --- a/drivers/pwm/sandbox_pwm.c +++ b/drivers/pwm/sandbox_pwm.c @@ -14,6 +14,14 @@ enum { NUM_CHANNELS = 3, }; +/** + * struct sandbox_pwm_chan - a sandbox PWM channel + * + * @period_ns: Period of the PWM in nanoseconds + * @duty_ns: Current duty cycle of the PWM in nanoseconds + * @enable: true if the PWM is enabled + * @polarity: true if the PWM polarity is active high + */ struct sandbox_pwm_chan { uint period_ns; uint duty_ns; @@ -25,6 +33,23 @@ struct sandbox_pwm_priv { struct sandbox_pwm_chan chan[NUM_CHANNELS]; }; +int sandbox_pwm_get_config(struct udevice *dev, uint channel, uint *period_nsp, + uint *duty_nsp, bool *enablep, bool *polarityp) +{ + struct sandbox_pwm_priv *priv = dev_get_priv(dev); + struct sandbox_pwm_chan *chan; + + if (channel >= NUM_CHANNELS) + return -ENOSPC; + chan = &priv->chan[channel]; + *period_nsp = chan->period_ns; + *duty_nsp = chan->duty_ns; + *enablep = chan->enable; + *polarityp = chan->polarity; + + return 0; +} + static int sandbox_pwm_set_config(struct udevice *dev, uint channel, uint period_ns, uint duty_ns) { |