diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2018-03-05 09:49:40 -0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2018-03-07 22:26:17 +0000 |
| commit | 6d66a9cc7651a7ff6387f574c1d684ca05d7398a (patch) | |
| tree | cf8542ac7aac61530afecbc5161a660ccf335ccf /include | |
| parent | ce08db589ad87d10794cb7d93ed4decc5c01c8cf (diff) | |
| download | chrome-ec-6d66a9cc7651a7ff6387f574c1d684ca05d7398a.tar.gz | |
fan: Allow board to configure fans at run time
This patch splits struct fan_t into two parts: base configuration
and RPM configuration. RPMs are expected to be different from
model to model while a base configuration is most likely shared.
BUG=b:73720175
BRANCH=none
TEST=make buildall
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/949382
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
(cherry picked from commit 7f4018c41f875c7fbdff03ee4a489753d541b0a9)
Change-Id: Iff17573f110e07e88d097dd848cf91ee98b83176
Reviewed-on: https://chromium-review.googlesource.com/953791
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/fan.h | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/include/fan.h b/include/fan.h index bd94ba8bd1..86c2822f80 100644 --- a/include/fan.h +++ b/include/fan.h @@ -8,13 +8,8 @@ #ifndef __CROS_EC_FAN_H #define __CROS_EC_FAN_H -/* Characteristic of each physical fan */ -struct fan_t { +struct fan_conf { unsigned int flags; - /* rpm_min is to keep turning. rpm_start is to begin turning */ - int rpm_min; - int rpm_start; - int rpm_max; /* Hardware channel number (the meaning is chip-specific) */ int ch; /* Active-high power_good input GPIO, or -1 if none */ @@ -23,6 +18,19 @@ struct fan_t { int enable_gpio; }; +struct fan_rpm { + /* rpm_min is to keep turning. rpm_start is to begin turning */ + int rpm_min; + int rpm_start; + int rpm_max; +}; + +/* Characteristic of each physical fan */ +struct fan_t { + const struct fan_conf *conf; + const struct fan_rpm *rpm; +}; + /* Values for .flags field */ /* Enable automatic RPM control using tach input */ #define FAN_USE_RPM_MODE (1 << 0) @@ -30,8 +38,10 @@ struct fan_t { #define FAN_USE_FAST_START (1 << 1) /* The list of fans is instantiated in board.c. */ -extern const struct fan_t fans[]; +extern struct fan_t fans[]; +/* For convenience */ +#define FAN_CH(fan) fans[fan].conf->ch /** * Set the amount of active cooling needed. The thermal control task will call |