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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <common.h>
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#include <cros_ec.h>
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#include <dm.h>
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#include <errno.h>
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#include <log.h>
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#include <pwm.h>
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struct cros_ec_pwm_priv {
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bool enabled;
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uint duty;
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};
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static int cros_ec_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 cros_ec_pwm_priv *priv = dev_get_priv(dev);
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uint duty;
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int ret;
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debug("%s: period_ns=%u, duty_ns=%u asked\n", __func__,
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period_ns, duty_ns);
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/* No way to set the period, only a relative duty cycle */
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duty = EC_PWM_MAX_DUTY * duty_ns / period_ns;
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if (duty > EC_PWM_MAX_DUTY)
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duty = EC_PWM_MAX_DUTY;
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if (!priv->enabled) {
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priv->duty = duty;
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debug("%s: duty=%#x to-be-set\n", __func__, duty);
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return 0;
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}
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ret = cros_ec_set_pwm_duty(dev->parent, channel, duty);
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if (ret) {
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debug("%s: duty=%#x failed\n", __func__, duty);
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return ret;
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}
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priv->duty = duty;
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debug("%s: duty=%#x set\n", __func__, duty);
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return 0;
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}
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static int cros_ec_pwm_set_enable(struct udevice *dev, uint channel,
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bool enable)
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{
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struct cros_ec_pwm_priv *priv = dev_get_priv(dev);
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int ret;
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ret = cros_ec_set_pwm_duty(dev->parent, channel,
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enable ? priv->duty : 0);
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if (ret) {
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debug("%s: enable=%d failed\n", __func__, enable);
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return ret;
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}
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priv->enabled = enable;
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debug("%s: enable=%d (duty=%#x) set\n", __func__,
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enable, priv->duty);
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return 0;
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}
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static const struct pwm_ops cros_ec_pwm_ops = {
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.set_config = cros_ec_pwm_set_config,
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.set_enable = cros_ec_pwm_set_enable,
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};
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static const struct udevice_id cros_ec_pwm_ids[] = {
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{ .compatible = "google,cros-ec-pwm" },
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{ }
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};
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U_BOOT_DRIVER(cros_ec_pwm) = {
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.name = "cros_ec_pwm",
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.id = UCLASS_PWM,
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.of_match = cros_ec_pwm_ids,
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.ops = &cros_ec_pwm_ops,
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.priv_auto = sizeof(struct cros_ec_pwm_priv),
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};
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