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EC_LPC_COMMAND_PWM_GET_FAN_RPM return target RPM

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Actual RPM is now read from LPC mapped space. Modify this command to
return target RPM so we can verify EC receives target RPM.

Signed-off-by: Vic Yang <victoryang@chromium.org>

BUG=chrome-os-partner:8238
TEST=Get the same value after setting target RPM.

Change-Id: I9bcc9edd327cec1311b51fd0fcbc4a43b353daff
This commit is contained in:
Vic Yang
2012-02-27 14:08:02 -08:00
parent f40df60a9a
commit 44140b3c57
3 changed files with 10 additions and 1 deletions
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6
chip/lm4/pwm.c
View File

@@ -63,6 +63,12 @@ int pwm_get_fan_rpm(void)
}
int pwm_get_fan_target_rpm(void)
{
return (LM4_FAN_FANCMD(FAN_CH_CPU) & MAX_RPM) * CPU_FAN_SCALE;
}
int pwm_set_fan_target_rpm(int rpm)
{
/* Apply fan scaling */

2
common/pwm_commands.c
View File

@@ -18,7 +18,7 @@ enum lpc_status pwm_command_get_fan_rpm(uint8_t *data)
struct lpc_response_pwm_get_fan_rpm *r =
(struct lpc_response_pwm_get_fan_rpm *)data;
r->rpm = pwm_get_fan_rpm();
r->rpm = pwm_get_fan_target_rpm();
return EC_LPC_STATUS_SUCCESS;
}

3
include/pwm.h
View File

@@ -20,6 +20,9 @@ int pwm_enable_fan(int enable);
/* Gets the current fan RPM. */
int pwm_get_fan_rpm(void);
/* Get the target fan RPM. */
int pwm_get_fan_target_rpm(void);
/* Sets the target fan RPM. Pass -1 to set fan to maximum. */
int pwm_set_fan_target_rpm(int rpm);