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| author | Sue Chen <sue.chen@quanta.corp-partner.google.com> | 2021-11-01 15:11:03 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-12-11 02:17:57 +0000 |
| commit | f9977e0929a99edc583109693fd2aa0d404cc8ec (patch) | |
| tree | ede6844f29f2df75869b84edff14b8fa58b410a5 | |
| parent | 4c9dd75d74844ea1ba31c97ef146ec4875826209 (diff) | |
| download | chrome-ec-f9977e0929a99edc583109693fd2aa0d404cc8ec.tar.gz | |
quackingstick: support thermal charge policy
The charging limitation:
While the DUT is enter OS, sample temperature as charger task
Level | low T'C | high T'C | current
| (Tsens > T) | (Tsens < T) | (mA)
------------------------------------------------
0 | 0 | 50 | 3000 (Normal charge)
1 | 48 | 53 | 1500
2 | 51 | 56 | 1000
3 | 54 | 100 | 800
BUG=b:196997371
BRANCH=trogdor
TEST=use console cmd chgstate to check requested_current is as
expected.
Signed-off-by: Sue Chen <sue.chen@quanta.corp-partner.google.com>
Change-Id: I1665f65d952cfd6bd292188b573997100384278f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3255091
Reviewed-by: Wai-Hong Tam <waihong@google.com>
Commit-Queue: Bob Moragues <moragues@chromium.org>
| -rw-r--r-- | board/quackingstick/usbc_config.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/board/quackingstick/usbc_config.c b/board/quackingstick/usbc_config.c index 8f3fb02c30..b41eb2ecf1 100644 --- a/board/quackingstick/usbc_config.c +++ b/board/quackingstick/usbc_config.c @@ -8,7 +8,9 @@ #include "charger.h" #include "charger/isl923x_public.h" #include "charge_state.h" +#include "temp_sensor.h" #include "usb_pd.h" +#include "util.h" #define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args) #define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args) @@ -21,14 +23,50 @@ const struct charger_config_t chg_chips[] = { }, }; +struct temp_chg_step { + int low; /* temp thershold ('C) to lower level*/ + int high; /* temp thershold ('C) to higher level */ + int current; /* charging limitation (mA) */ +}; + +static const struct temp_chg_step temp_chg_table[] = { + {.low = 0, .high = 50, .current = 3000}, /* Lv0: normal charge */ + {.low = 48, .high = 53, .current = 1500}, + {.low = 51, .high = 56, .current = 1000}, + {.low = 54, .high = 100, .current = 800}, +}; +#define NUM_TEMP_CHG_LEVELS ARRAY_SIZE(temp_chg_table) + int charger_profile_override(struct charge_state_data *curr) { + static int current_level; + int charger_temp, charger_temp_c; int usb_mv; int port; if (curr->state != ST_CHARGE) return 0; + /* charge current control depends on temp if the system is on */ + if (chipset_in_state(CHIPSET_STATE_ON)) { + temp_sensor_read(TEMP_SENSOR_SYS2, &charger_temp); + charger_temp_c = K_TO_C(charger_temp); + + if (charger_temp_c <= temp_chg_table[current_level].low) + current_level--; + else if (charger_temp_c >= temp_chg_table[current_level].high) + current_level++; + + if (current_level < 0) + current_level = 0; + + if (current_level >= NUM_TEMP_CHG_LEVELS) + current_level = NUM_TEMP_CHG_LEVELS - 1; + + curr->requested_current = MIN(curr->requested_current, + temp_chg_table[current_level].current); + } + /* Lower the max requested voltage to 5V when battery is full. */ if (chipset_in_state(CHIPSET_STATE_ANY_OFF) && !(curr->batt.flags & BATT_FLAG_BAD_STATUS) && |