diff options
author | Simon Glass <sjg@chromium.org> | 2016-01-21 19:44:54 -0700 |
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committer | Simon Glass <sjg@chromium.org> | 2016-01-21 20:42:36 -0700 |
commit | fc760cb8c4cc16061079fb45e2e0bad11e5acedc (patch) | |
tree | d796c4f0ae64c7d5d32b26f4fdcd9a145be5f52f /drivers/pwm/pwm-uclass.c | |
parent | d4bf91ada110aeb26f844cbe95cdb9b1ddb87f19 (diff) |
dm: pwm: Add a PWM uclass
Add a uclass that supports Pulse Width Modulation (PWM) devices. It
provides methods to enable/disable and configure the device.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/pwm/pwm-uclass.c')
-rw-r--r-- | drivers/pwm/pwm-uclass.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-uclass.c b/drivers/pwm/pwm-uclass.c new file mode 100644 index 00000000000..c2200af8a55 --- /dev/null +++ b/drivers/pwm/pwm-uclass.c @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2016 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <pwm.h> + +int pwm_set_config(struct udevice *dev, uint channel, uint period_ns, + uint duty_ns) +{ + struct pwm_ops *ops = pwm_get_ops(dev); + + if (!ops->set_config) + return -ENOSYS; + + return ops->set_config(dev, channel, period_ns, duty_ns); +} + +int pwm_set_enable(struct udevice *dev, uint channel, bool enable) +{ + struct pwm_ops *ops = pwm_get_ops(dev); + + if (!ops->set_enable) + return -ENOSYS; + + return ops->set_enable(dev, channel, enable); +} + +UCLASS_DRIVER(pwm) = { + .id = UCLASS_PWM, + .name = "pwm", +}; |