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/* Copyright 2013 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Common functions for blinking LEDs.
*/
#include "console.h"
#include "ec_commands.h"
#include "hooks.h"
#include "host_command.h"
#include "led_common.h"
#include "util.h"
#define LED_AUTO_CONTROL_FLAG(id) (1 << (id))
static uint32_t led_auto_control_flags = ~0x00;
__overridable int led_is_supported(enum ec_led_id led_id)
{
int i;
static int supported_leds = -1;
if (supported_leds == -1) {
supported_leds = 0;
for (i = 0; i < supported_led_ids_count; i++)
supported_leds |= (1 << supported_led_ids[i]);
}
return ((1 << (int)led_id) & supported_leds);
}
void led_auto_control(enum ec_led_id led_id, int enable)
{
if (enable)
led_auto_control_flags |= LED_AUTO_CONTROL_FLAG(led_id);
else
led_auto_control_flags &= ~LED_AUTO_CONTROL_FLAG(led_id);
}
int led_auto_control_is_enabled(enum ec_led_id led_id)
{
if (!led_is_supported(led_id))
return 0;
return (led_auto_control_flags & LED_AUTO_CONTROL_FLAG(led_id)) != 0;
}
__attribute__((weak)) void board_led_auto_control(void)
{
/*
* The projects have only power led won't change the led
* state immediately as the auto command is called for
* they only check the led state while the power state
* is changed.
*/
}
static enum ec_status led_command_control(struct host_cmd_handler_args *args)
{
const struct ec_params_led_control *p = args->params;
struct ec_response_led_control *r = args->response;
int i;
args->response_size = sizeof(*r);
memset(r->brightness_range, 0, sizeof(r->brightness_range));
if (!led_is_supported(p->led_id))
return EC_RES_INVALID_PARAM;
led_get_brightness_range(p->led_id, r->brightness_range);
if (p->flags & EC_LED_FLAGS_QUERY)
return EC_RES_SUCCESS;
for (i = 0; i < EC_LED_COLOR_COUNT; i++)
if (r->brightness_range[i] == 0 && p->brightness[i] != 0)
return EC_RES_INVALID_PARAM;
if (p->flags & EC_LED_FLAGS_AUTO) {
led_auto_control(p->led_id, 1);
if (!IS_ENABLED(CONFIG_LED_ONOFF_STATES))
board_led_auto_control();
} else {
if (led_set_brightness(p->led_id, p->brightness) != EC_SUCCESS)
return EC_RES_INVALID_PARAM;
led_auto_control(p->led_id, 0);
}
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_LED_CONTROL, led_command_control, EC_VER_MASK(1));
__attribute__((weak)) void led_control(enum ec_led_id led_id,
enum ec_led_state state)
{
/*
* Default weak implementation that does not affect the state of
* LED. Boards can provide their own implementation.
*/
}
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