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fan: Disable fan when duty / RPM is set to zero

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BRANCH=master
BUG=none
TEST=Check GPIO(fan_t.enable_gpio) if it is low when S3 or S0ix or
0% duty or 0 RPM on kunimitsu.

Change-Id: I6aecae269fa8bb41a811e75089757fe714576160
Signed-off-by: Kyoung Kim <kyoung.il.kim@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/310391
Commit-Ready: Kyoung Il Kim <kyoung.il.kim@intel.com>
Tested-by: Kyoung Il Kim <kyoung.il.kim@intel.com>
Reviewed-by: Kyoung Il Kim <kyoung.il.kim@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
This commit is contained in:
Kyoung Kim
2015-10-19 15:55:20 -07:00
committed by chrome-bot
parent ebf92ecc83
commit ea3b0a97c8
1 changed files with 9 additions and 9 deletions
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18
common/fan.c
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@@ -97,8 +97,8 @@ static void set_duty_cycle(int fan, int percent)
/* Move the fan to manual control */
fan_set_rpm_mode(fans[fan].ch, 0);
/* Always enable the fan */
set_enabled(fan, 1);
/* enable the fan when non-zero duty */
set_enabled(fan, (percent > 0) ? 1 : 0);
/* Disable thermal engine automatic fan control. */
set_thermal_control_enabled(fan, 0);
@@ -227,8 +227,8 @@ static int cc_fanset(int argc, char **argv)
/* Move the fan to automatic control */
fan_set_rpm_mode(fans[fan].ch, 1);
/* Always enable the fan */
set_enabled(fan, 1);
/* enable the fan when non-zero rpm */
set_enabled(fan, (rpm > 0) ? 1 : 0);
/* Disable thermal engine automatic fan control. */
set_thermal_control_enabled(fan, 0);
@@ -335,8 +335,8 @@ static int hc_pwm_set_fan_target_rpm(struct host_cmd_handler_args *args)
if (args->version == 0) {
for (fan = 0; fan < CONFIG_FANS; fan++) {
/* Always enable the fan */
set_enabled(fan, 1);
/* enable the fan if rpm is non-zero */
set_enabled(fan, (p_v0->rpm > 0) ? 1 : 0);
set_thermal_control_enabled(fan, 0);
fan_set_rpm_mode(fans[fan].ch, 1);
@@ -350,8 +350,8 @@ static int hc_pwm_set_fan_target_rpm(struct host_cmd_handler_args *args)
if (fan >= CONFIG_FANS)
return EC_RES_ERROR;
/* Always enable the fan */
set_enabled(fan, 1);
/* enable the fan if rpm is non-zero */
set_enabled(fan, (p_v1->rpm > 0) ? 1 :0);
set_thermal_control_enabled(fan, 0);
fan_set_rpm_mode(fans[fan].ch, 1);
@@ -531,7 +531,7 @@ static void pwm_fan_S3_S5(void)
* charging or something.
*/
fan_set_rpm_target(fans[fan].ch, 0);
fan_set_enabled(fans[fan].ch, 0); /* crosbug.com/p/8097 */
set_enabled(fan, 0); /* crosbug.com/p/8097 */
}
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, pwm_fan_S3_S5, HOOK_PRIO_DEFAULT);