diff options
Diffstat (limited to 'zephyr/shim/src/pwm_led.c')
| -rw-r--r-- | zephyr/shim/src/pwm_led.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/zephyr/shim/src/pwm_led.c b/zephyr/shim/src/pwm_led.c new file mode 100644 index 0000000000..2f3dbc6857 --- /dev/null +++ b/zephyr/shim/src/pwm_led.c @@ -0,0 +1,37 @@ +/* Copyright 2021 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#define DT_DRV_COMPAT cros_ec_pwm_leds + +#include <devicetree.h> + +#if DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT) + +#include "led_pwm.h" +#include "pwm.h" + +BUILD_ASSERT(DT_NUM_INST_STATUS_OKAY(cros_ec_pwm_leds) <= 1, + "Multiple CrOS EC PWM LED instances defined"); +BUILD_ASSERT(DT_INST_PROP_LEN(0, leds) <= 2, + "Unsupported number of LEDs defined"); + +#define PWM_CHANNEL_BY_IDX(node_id, prop, idx, led_ch) \ + PWM_CHANNEL(DT_PWMS_CTLR_BY_IDX( \ + DT_PHANDLE_BY_IDX(node_id, prop, idx), led_ch)) + +#define PWM_LED_INIT(node_id, prop, idx) \ + [PWM_LED##idx] = { \ + .ch0 = PWM_CHANNEL_BY_IDX(node_id, prop, idx, 0), \ + .ch1 = PWM_CHANNEL_BY_IDX(node_id, prop, idx, 1), \ + .ch2 = PWM_CHANNEL_BY_IDX(node_id, prop, idx, 2), \ + .enable = &pwm_enable, \ + .set_duty = &pwm_set_duty, \ + }, + +struct pwm_led pwm_leds[] = { + DT_INST_FOREACH_PROP_ELEM(0, leds, PWM_LED_INIT) +}; + +#endif /* DT_HAS_COMPAT_STATUS_OKAY */ |