diff options
Diffstat (limited to 'common/pwm.c')
| -rw-r--r-- | common/pwm.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/common/pwm.c b/common/pwm.c deleted file mode 100644 index 41989a94e0..0000000000 --- a/common/pwm.c +++ /dev/null @@ -1,180 +0,0 @@ -/* Copyright 2013 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. - */ - -#include "common.h" -#include "console.h" -#include "gpio.h" -#include "hooks.h" -#include "host_command.h" -#include "pwm.h" -#include "util.h" - -#ifdef CONFIG_ZEPHYR -#include "pwm/pwm.h" -#endif - -#ifdef CONFIG_PWM - -/* - * Get target channel based on type / index host command parameters. - * Returns 0 if a valid channel is selected, -1 on error. - */ -static int get_target_channel(enum pwm_channel *channel, int type, int index) -{ - switch (type) { - case EC_PWM_TYPE_GENERIC: - *channel = index; - break; -#ifdef CONFIG_PWM_KBLIGHT - case EC_PWM_TYPE_KB_LIGHT: - *channel = PWM_CH_KBLIGHT; - break; -#endif -#ifdef CONFIG_PWM_DISPLIGHT - case EC_PWM_TYPE_DISPLAY_LIGHT: - *channel = PWM_CH_DISPLIGHT; - break; -#endif - default: - return -1; - } - - return *channel >= PWM_CH_COUNT; -} - -__attribute__((weak)) void pwm_set_raw_duty(enum pwm_channel ch, uint16_t duty) -{ - int percent; - - /* Convert 16 bit duty to percent on [0, 100] */ - percent = DIV_ROUND_NEAREST((uint32_t)duty * 100, 65535); - pwm_set_duty(ch, percent); -} - -__attribute__((weak)) uint16_t pwm_get_raw_duty(enum pwm_channel ch) -{ - return (pwm_get_duty(ch) * 65535) / 100; -} - -static enum ec_status -host_command_pwm_set_duty(struct host_cmd_handler_args *args) -{ - const struct ec_params_pwm_set_duty *p = args->params; - enum pwm_channel channel; - - if (get_target_channel(&channel, p->pwm_type, p->index)) - return EC_RES_INVALID_PARAM; - - pwm_set_raw_duty(channel, p->duty); - pwm_enable(channel, p->duty > 0); - - return EC_RES_SUCCESS; -} -DECLARE_HOST_COMMAND(EC_CMD_PWM_SET_DUTY, - host_command_pwm_set_duty, - EC_VER_MASK(0)); - -static enum ec_status -host_command_pwm_get_duty(struct host_cmd_handler_args *args) -{ - const struct ec_params_pwm_get_duty *p = args->params; - struct ec_response_pwm_get_duty *r = args->response; - - enum pwm_channel channel; - - if (get_target_channel(&channel, p->pwm_type, p->index)) - return EC_RES_INVALID_PARAM; - - r->duty = pwm_get_raw_duty(channel); - args->response_size = sizeof(*r); - - return EC_RES_SUCCESS; -} -DECLARE_HOST_COMMAND(EC_CMD_PWM_GET_DUTY, - host_command_pwm_get_duty, - EC_VER_MASK(0)); - -/** - * Print status of a PWM channel. - * - * @param ch Channel to print. - */ -static void print_channel(enum pwm_channel ch, int max_duty) -{ - if (pwm_get_enabled(ch)) - if (max_duty == 100) - ccprintf(" %d: %d%%\n", ch, pwm_get_duty(ch)); - else - ccprintf(" %d: %d\n", ch, pwm_get_raw_duty(ch)); - else - ccprintf(" %d: disabled\n", ch); -} - -static int cc_pwm_duty(int argc, char **argv) -{ - int value = 0; - int max_duty = 100; - int ch; - char *e; - char *raw; - - if (argc < 2) { - ccprintf("PWM channels:\n"); - for (ch = 0; ch < PWM_CH_COUNT; ch++) - print_channel(ch, max_duty); - return EC_SUCCESS; - } - - ch = strtoi(argv[1], &e, 0); - if (*e || ch < 0 || ch >= PWM_CH_COUNT) - return EC_ERROR_PARAM1; - - if (argc > 2) { - raw = argv[2]; - if (!strcasecmp(raw, "raw")) { - /* use raw duty */ - value = strtoi(argv[3], &e, 0); - max_duty = EC_PWM_MAX_DUTY; - } else { - /* use percent duty */ - value = strtoi(argv[2], &e, 0); - max_duty = 100; - } - - if (*e || value > max_duty) { - /* Bad param */ - return EC_ERROR_PARAM2; - } else if (value < 0) { - /* Negative = disable */ - pwm_enable(ch, 0); - } else { - ccprintf("Setting channel %d to %d\n", ch, value); - pwm_enable(ch, 1); - (max_duty == 100) ? pwm_set_duty(ch, value) : - pwm_set_raw_duty(ch, value); - } - } - - print_channel(ch, max_duty); - - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(pwmduty, cc_pwm_duty, - "[channel [<percent> | -1=disable] | [raw <value>]]", - "Get/set PWM duty cycles "); -#endif /* CONFIG_PWM */ - -#ifndef CONFIG_ZEPHYR -/* - * Initialize all PWM pins as functional. This is not required under - * Zephyr as pin configuration is automatically performed by chip driver - */ -static void pwm_pin_init(void) -{ - gpio_config_module(MODULE_PWM, 1); -} -/* HOOK_PRIO_INIT_PWM may be used for chip PWM unit init, so use PRIO + 1 */ -DECLARE_HOOK(HOOK_INIT, pwm_pin_init, HOOK_PRIO_INIT_PWM + 1); -#endif /* CONFIG_ZEPHYR */ |