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88 lines
1.8 KiB
88 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (c) 2015 Google, Inc |
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* Written by Simon Glass <[email protected]> |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <errno.h> |
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#include <pwm.h> |
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#include <asm/test.h> |
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enum { |
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NUM_CHANNELS = 3, |
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}; |
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struct sandbox_pwm_chan { |
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uint period_ns; |
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uint duty_ns; |
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bool enable; |
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bool polarity; |
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}; |
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struct sandbox_pwm_priv { |
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struct sandbox_pwm_chan chan[NUM_CHANNELS]; |
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}; |
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static int sandbox_pwm_set_config(struct udevice *dev, uint channel, |
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uint period_ns, uint duty_ns) |
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{ |
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struct sandbox_pwm_priv *priv = dev_get_priv(dev); |
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struct sandbox_pwm_chan *chan; |
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if (channel >= NUM_CHANNELS) |
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return -ENOSPC; |
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chan = &priv->chan[channel]; |
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chan->period_ns = period_ns; |
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chan->duty_ns = duty_ns; |
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return 0; |
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} |
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static int sandbox_pwm_set_enable(struct udevice *dev, uint channel, |
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bool enable) |
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{ |
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struct sandbox_pwm_priv *priv = dev_get_priv(dev); |
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struct sandbox_pwm_chan *chan; |
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if (channel >= NUM_CHANNELS) |
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return -ENOSPC; |
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chan = &priv->chan[channel]; |
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chan->enable = enable; |
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return 0; |
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} |
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static int sandbox_pwm_set_invert(struct udevice *dev, uint channel, |
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bool polarity) |
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{ |
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struct sandbox_pwm_priv *priv = dev_get_priv(dev); |
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struct sandbox_pwm_chan *chan; |
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if (channel >= NUM_CHANNELS) |
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return -ENOSPC; |
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chan = &priv->chan[channel]; |
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chan->polarity = polarity; |
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return 0; |
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} |
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static const struct pwm_ops sandbox_pwm_ops = { |
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.set_config = sandbox_pwm_set_config, |
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.set_enable = sandbox_pwm_set_enable, |
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.set_invert = sandbox_pwm_set_invert, |
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}; |
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static const struct udevice_id sandbox_pwm_ids[] = { |
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{ .compatible = "sandbox,pwm" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(warm_pwm_sandbox) = { |
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.name = "pwm_sandbox", |
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.id = UCLASS_PWM, |
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.of_match = sandbox_pwm_ids, |
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.ops = &sandbox_pwm_ops, |
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.priv_auto_alloc_size = sizeof(struct sandbox_pwm_priv), |
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};
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