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743a9ea7cd
Rather than having various PWM module groups initialized from various HOOK_INIT functions, group them all into a single module and initialize them all from a common function in pwm.c. BUG=chromium:563708 TEST=Manual on samus / samus_pd (with CONFIG_ADC enabled). Verify that samus fan + KB backlight control is functional and samus_pd correctly sets PWM output. BRANCH=None Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Change-Id: I9f9b09bfa544cd9bc6b7a867e77757dff0505941 Reviewed-on: https://chromium-review.googlesource.com/314882 Commit-Ready: Shawn N <shawnn@chromium.org> Tested-by: Shawn N <shawnn@chromium.org> Reviewed-by: Alec Berg <alecaberg@chromium.org>
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "common.h"
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#include "console.h"
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#include "gpio.h"
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#include "hooks.h"
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#include "pwm.h"
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#include "util.h"
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#ifdef CONFIG_PWM
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/**
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* Print status of a PWM channel.
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*
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* @param ch Channel to print.
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*/
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static void print_channel(enum pwm_channel ch)
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{
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if (pwm_get_enabled(ch))
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ccprintf(" %d: %d%%\n", ch, pwm_get_duty(ch));
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else
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ccprintf(" %d: disabled\n", ch);
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}
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static int cc_pwm_duty(int argc, char **argv)
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{
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int percent = 0;
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int ch;
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char *e;
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if (argc < 2) {
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ccprintf("PWM channels:\n");
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for (ch = 0; ch < PWM_CH_COUNT; ch++)
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print_channel(ch);
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return EC_SUCCESS;
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}
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ch = strtoi(argv[1], &e, 0);
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if (*e || ch < 0 || ch >= PWM_CH_COUNT)
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return EC_ERROR_PARAM1;
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if (argc > 2) {
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percent = strtoi(argv[2], &e, 0);
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if (*e || percent > 100) {
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/* Bad param */
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return EC_ERROR_PARAM1;
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} else if (percent < 0) {
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/* Negative = disable */
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pwm_enable(ch, 0);
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} else {
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ccprintf("Setting channel %d to %d%%\n", ch, percent);
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pwm_enable(ch, 1);
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pwm_set_duty(ch, percent);
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}
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}
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print_channel(ch);
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(pwmduty, cc_pwm_duty,
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"[channel [<percent> | -1=disable]]",
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"Get/set PWM duty cycles ",
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NULL);
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#endif /* CONFIG_PWM */
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/* Initialize all PWM pins as functional */
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static void pwm_pin_init(void)
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{
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gpio_config_module(MODULE_PWM, 1);
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}
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/* HOOK_PRIO_INIT_PWM may be used for chip PWM unit init, so use PRIO + 1 */
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DECLARE_HOOK(HOOK_INIT, pwm_pin_init, HOOK_PRIO_INIT_PWM + 1);
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