diff options
Diffstat (limited to 'board/osiris/fans.c')
| -rw-r--r-- | board/osiris/fans.c | 177 |
1 files changed, 173 insertions, 4 deletions
diff --git a/board/osiris/fans.c b/board/osiris/fans.c index fa5a8dc09a..5878d4c4c5 100644 --- a/board/osiris/fans.c +++ b/board/osiris/fans.c @@ -1,4 +1,4 @@ -/* Copyright 2022 The Chromium OS Authors. All rights reserved. +/* Copyright 2022 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -12,6 +12,7 @@ #include "fan.h" #include "hooks.h" #include "pwm.h" +#include "util.h" /* MFT channels. These are logically separate from pwm_channels. */ const struct mft_t mft_channels[] = { @@ -20,16 +21,28 @@ const struct mft_t mft_channels[] = { .clk_src = TCKC_LFCLK, .pwm_id = PWM_CH_FAN, }, + [MFT_CH_1] = { + .module = NPCX_MFT_MODULE_2, + .clk_src = TCKC_LFCLK, + .pwm_id = PWM_CH_FAN2, + }, }; BUILD_ASSERT(ARRAY_SIZE(mft_channels) == MFT_CH_COUNT); static const struct fan_conf fan_conf_0 = { .flags = FAN_USE_RPM_MODE, - .ch = MFT_CH_0, /* Use MFT id to control fan */ + .ch = MFT_CH_0, /* Use MFT id to control fan */ .pgood_gpio = -1, .enable_gpio = GPIO_EN_PP5000_FAN, }; +static const struct fan_conf fan_conf_1 = { + .flags = FAN_USE_RPM_MODE, + .ch = MFT_CH_1, /* Use MFT id to control fan */ + .pgood_gpio = -1, + .enable_gpio = GPIO_EN_PP5000_FAN2, +}; + /* * TODO(b/234545460): thermistor placement and calibration * @@ -38,8 +51,14 @@ static const struct fan_conf fan_conf_0 = { * boards as well. */ static const struct fan_rpm fan_rpm_0 = { - .rpm_min = 3000, - .rpm_start = 3000, + .rpm_min = 2500, + .rpm_start = 2500, + .rpm_max = 6000, +}; + +static const struct fan_rpm fan_rpm_1 = { + .rpm_min = 2500, + .rpm_start = 2500, .rpm_max = 6000, }; @@ -48,4 +67,154 @@ const struct fan_t fans[FAN_CH_COUNT] = { .conf = &fan_conf_0, .rpm = &fan_rpm_0, }, + [FAN_CH_1] = { + .conf = &fan_conf_1, + .rpm = &fan_rpm_1, + }, +}; + +/* fan control */ + +struct fan_step { + int on; + int off; + int rpm; +}; + +struct fan_table_config { + /* number of control_table */ + uint8_t step; + /* fan control table */ + const struct fan_step *control_table; +}; + +const struct fan_step fan_table0[] = { + { .on = 25, .off = 0, .rpm = 0 }, + { .on = 37, .off = 34, .rpm = 2500 }, + { .on = 42, .off = 39, .rpm = 2800 }, + { .on = 46, .off = 43, .rpm = 3000 }, + { .on = 51, .off = 48, .rpm = 3200 }, + { .on = 55, .off = 52, .rpm = 3600 }, + { .on = 59, .off = 56, .rpm = 4000 }, + { .on = 66, .off = 63, .rpm = 4600 }, + { .on = 72, .off = 69, .rpm = 5000 }, + { .on = 74, .off = 71, .rpm = 5500 }, +}; +const int fan_table0_count = ARRAY_SIZE(fan_table0); + +const struct fan_step fan_table1[] = { + { .on = 25, .off = 0, .rpm = 0 }, + { .on = 51, .off = 48, .rpm = 3200 }, + { .on = 55, .off = 52, .rpm = 3600 }, + { .on = 59, .off = 56, .rpm = 4000 }, + { .on = 66, .off = 63, .rpm = 4600 }, + { .on = 72, .off = 69, .rpm = 5000 }, + { .on = 74, .off = 71, .rpm = 5500 }, +}; +const int fan_table1_count = ARRAY_SIZE(fan_table1); + +/* Fan control configuration */ +static struct fan_table_config fan_tables[] = { + [FAN_CH_0] = { + .step = fan_table0_count, + .control_table = (const struct fan_step *) &fan_table0, + }, + [FAN_CH_1] = { + .step = fan_table1_count, + .control_table = (const struct fan_step *) &fan_table1, + }, }; +BUILD_ASSERT(ARRAY_SIZE(fan_tables) == FAN_CH_COUNT); + +static int current_level[] = { 0, 0 }; +BUILD_ASSERT(ARRAY_SIZE(current_level) == FAN_CH_COUNT); + +static int previous_level[] = { 0, 0 }; +BUILD_ASSERT(ARRAY_SIZE(previous_level) == FAN_CH_COUNT); + +#undef BOARD_FAN_TEST + +#ifdef BOARD_FAN_TEST +static int manual_temp = -1; +#endif + +int fan_percent_to_rpm(int fan, int pct) +{ + static struct fan_table_config *fan_table; + static int previous_pct; + int i; + + fan_table = &fan_tables[fan]; + +#ifdef BOARD_FAN_TEST + if (manual_temp != -1) + pct = manual_temp; +#endif + + /* + * Compare the pct and previous pct, we have the three paths : + * 1. decreasing path. (check the off point) + * 2. increasing path. (check the on point) + * 3. invariant path. (return the current RPM) + */ + if (pct < previous_pct) { + for (i = current_level[fan]; i >= 0; i--) { + if (pct <= fan_table->control_table[i].off) + current_level[fan] = i - 1; + else + break; + } + } else if (pct > previous_pct) { + for (i = current_level[fan] + 1; i < fan_table->step; i++) { + if (pct >= fan_table->control_table[i].on) + current_level[fan] = i; + else + break; + } + } + + if (current_level[fan] < 0) + current_level[fan] = 0; + + if (current_level[fan] != previous_level[fan]) + cprints(CC_THERMAL, "Fan %d: Set fan RPM to %d", fan, + fan_table->control_table[current_level[fan]].rpm); + + if (fan == (FAN_CH_COUNT - 1)) + previous_pct = pct; + +#ifdef BOARD_FAN_TEST + if (manual_temp != -1) + ccprints("Fan%d: temps:%d curr:%d prev:%d rpm:%d", fan, pct, + current_level[fan], previous_level[fan], + fan_table->control_table[current_level[fan]].rpm); +#endif + + previous_level[fan] = current_level[fan]; + + return fan_table->control_table[current_level[fan]].rpm; +} + +#ifdef BOARD_FAN_TEST +static int command_fan_test(int argc, const char **argv) +{ + char *e; + int t; + + if (argc > 1) { + t = strtoi(argv[1], &e, 0); + if (*e) { + ccprints("Invalid test temp"); + return EC_ERROR_INVAL; + } + manual_temp = t; + ccprints("manual temp is %d", manual_temp); + return EC_SUCCESS; + } + manual_temp = -1; + ccprints("manual temp reset"); + return EC_SUCCESS; +} +DECLARE_CONSOLE_COMMAND(fan_test, command_fan_test, "[temperature]", + "set manual temperature for fan test"); +#endif |