/**
* Print status of a PWM channel.
*
* @param ch Channel to print.
*/
static void print_channel(enum pwm_channel ch)
{
if (pwm_get_enabled(ch))
ccprintf(" %d: %d%%\n", ch, pwm_get_duty(ch));
else
ccprintf(" %d: disabled\n", ch);
}
/**
* Get PWM duty cycle.
*
* @param ch operation channel
* @return duty cycle percent
*/
int pwm_get_duty(enum pwm_channel ch)
{
/* Return percent */
if (0 == pwm_get_enabled(ch))
return 0;
else
return (((NPCX_DCR(pwm_channels[ch].channel) + 1) * 100)
/ (NPCX_CTR(pwm_channels[ch].channel) + 1));
}
/**
* Get PWM duty cycle.
*
* @param ch operation channel
* @return duty cycle percent
*/
int pwm_get_duty(enum pwm_channel ch)
{
int mdl = pwm_channels[ch].channel;
/* Return percent */
if ((!pwm_get_enabled(ch)) || (NPCX_DCR(mdl) > NPCX_CTR(mdl)))
return 0;
else
return ((NPCX_DCR(mdl) + 1) * 100) / (NPCX_CTR(mdl) + 1);
}
int pwm_command_get_keyboard_backlight(struct host_cmd_handler_args *args)
{
struct ec_response_pwm_get_keyboard_backlight *r = args->response;
r->percent = pwm_get_duty(PWM_CH_KBLIGHT);
r->enabled = pwm_get_enabled(PWM_CH_KBLIGHT);
args->response_size = sizeof(*r);
return EC_RES_SUCCESS;
}
static void pwm_kblight_preserve_state(void)
{
struct pwm_kbd_state state;
state.kblight_en = pwm_get_enabled(PWM_CH_KBLIGHT);
state.kblight_percent = pwm_get_duty(PWM_CH_KBLIGHT);
system_add_jump_tag(PWMKBD_SYSJUMP_TAG, PWM_HOOK_VERSION,
sizeof(state), &state);
}