diff options
Diffstat (limited to 'power/cometlake.c')
| -rw-r--r-- | power/cometlake.c | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/power/cometlake.c b/power/cometlake.c deleted file mode 100644 index 1b73bcc296..0000000000 --- a/power/cometlake.c +++ /dev/null @@ -1,211 +0,0 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* Cometlake chipset power control module for Chrome EC */ - -#include "chipset.h" -#include "console.h" -#include "gpio.h" -#include "power.h" -#include "power/intel_x86.h" -#include "power_button.h" -#include "task.h" -#include "timer.h" - -/* Console output macros */ -#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args) - -/* Power signals list. Must match order of enum power_signal. */ -const struct power_signal_info power_signal_list[] = { - [X86_SLP_S0_DEASSERTED] = { - .gpio = GPIO_PCH_SLP_S0_L, - .flags = POWER_SIGNAL_ACTIVE_HIGH | - POWER_SIGNAL_DISABLE_AT_BOOT, - .name = "SLP_S0_DEASSERTED", - }, - [X86_SLP_S3_DEASSERTED] = { - .gpio = SLP_S3_SIGNAL_L, - .flags = POWER_SIGNAL_ACTIVE_HIGH, - .name = "SLP_S3_DEASSERTED", - }, - [X86_SLP_S4_DEASSERTED] = { - .gpio = SLP_S4_SIGNAL_L, - .flags = POWER_SIGNAL_ACTIVE_HIGH, - .name = "SLP_S4_DEASSERTED", - }, - [X86_RSMRST_L_PGOOD] = { - .gpio = GPIO_RSMRST_L_PGOOD, - .flags = POWER_SIGNAL_ACTIVE_HIGH, - .name = "RSMRST_L_PGOOD", - }, - [X86_PP5000_A_PGOOD] = { - .gpio = GPIO_PP5000_A_PG_OD, - .flags = POWER_SIGNAL_ACTIVE_HIGH, - .name = "PP5000_A_PGOOD", - }, - [X86_ALL_SYS_PGOOD] = { - .gpio = GPIO_PG_EC_ALL_SYS_PWRGD, - .flags = POWER_SIGNAL_ACTIVE_HIGH, - .name = "ALL_SYS_PWRGD", - }, -}; -BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT); - -static int forcing_shutdown; /* Forced shutdown in progress? */ - -/* Default no action, overwrite it in board.c if necessary*/ -__overridable void board_chipset_forced_shutdown(void) -{ - return; -} - -void chipset_force_shutdown(enum chipset_shutdown_reason reason) -{ - int timeout_ms = 50; - - CPRINTS("%s(%d)", __func__, reason); - report_ap_reset(reason); - - /* Turn off RSMRST_L to meet tPCH12 */ - gpio_set_level(GPIO_PCH_RSMRST_L, 0); - - /* Turn off A (except PP5000_A) rails*/ - gpio_set_level(GPIO_EN_A_RAILS, 0); - -#ifdef CONFIG_POWER_PP5000_CONTROL - /* Issue a request to turn off the rail. */ - power_5v_enable(task_get_current(), 0); -#else - /* Turn off PP5000_A rail */ - gpio_set_level(GPIO_EN_PP5000_A, 0); -#endif - - /* For b:143440730, stop checking GPIO_ALL_SYS_PGOOD if system is - * already force to G3. - */ - board_chipset_forced_shutdown(); - - /* Need to wait a min of 10 msec before check for power good */ - msleep(10); - - /* Now wait for PP5000_A and RSMRST_L to go low */ - while ((gpio_get_level(GPIO_PP5000_A_PG_OD) || - power_has_signals(IN_PGOOD_ALL_CORE)) && (timeout_ms > 0)) { - msleep(1); - timeout_ms--; - }; - - if (!timeout_ms) - CPRINTS("PP5000_A rail still up! Assuming G3."); -} - -void chipset_handle_espi_reset_assert(void) -{ - /* - * If eSPI_Reset# pin is asserted without SLP_SUS# being asserted, then - * it means that there is an unexpected power loss (global reset - * event). In this case, check if shutdown was being forced by pressing - * power button. If yes, release power button. - */ - if ((power_get_signals() & IN_PGOOD_ALL_CORE) && forcing_shutdown) { - power_button_pch_release(); - forcing_shutdown = 0; - } -} - -enum power_state chipset_force_g3(void) -{ - chipset_force_shutdown(CHIPSET_SHUTDOWN_G3); - - return POWER_G3; -} - -/* Default no action, overwrite it in board.c if necessary*/ -__attribute__((weak)) void all_sys_pgood_check_reboot(void) -{ - return; -} - -/* Called by APL power state machine when transitioning from G3 to S5 */ -void chipset_pre_init_callback(void) -{ - /* Enable 5.0V and 3.3V rails, and wait for Power Good */ -#ifdef CONFIG_POWER_PP5000_CONTROL - power_5v_enable(task_get_current(), 1); -#else - /* Turn on PP5000_A rail */ - gpio_set_level(GPIO_EN_PP5000_A, 1); -#endif - /* Turn on A (except PP5000_A) rails*/ - gpio_set_level(GPIO_EN_A_RAILS, 1); - - /* - * The status of the 5000_A rail is verifed in the calling function via - * power_wait_signals() as PP5000_A_PGOOD is included in the - * CHIPSET_G3S5_POWERUP_SIGNAL macro. - */ - - /* For b:143440730, system might hang-up before enter S0/S3. Check - * GPIO_ALL_SYS_PGOOD here to make sure it will trigger every time. - */ - all_sys_pgood_check_reboot(); -} - -enum power_state power_handle_state(enum power_state state) -{ - - int all_sys_pwrgd_in; - int all_sys_pwrgd_out; - - /* - * Check if RSMRST_L signal state has changed and if so, pass the new - * value along to the PCH. However, if the new transition of RSMRST_L - * from the Sielgo is from low to high, then gate this transition to the - * AP by the PP5000_A rail. If the new transition is from high to low, - * then pass that through regardless of the PP5000_A value. - * - * The PP5000_A power good signal will float high if the - * regulator is not powered, so checking both that the EN and the PG - * signals are high. - */ - if ((gpio_get_level(GPIO_PP5000_A_PG_OD) && - gpio_get_level(GPIO_EN_PP5000_A)) || - gpio_get_level(GPIO_PCH_RSMRST_L)) - common_intel_x86_handle_rsmrst(state); - - switch (state) { - - case POWER_S5: - if (forcing_shutdown) { - power_button_pch_release(); - forcing_shutdown = 0; - } - /* If RSMRST_L is asserted, we're no longer in S5. */ - if (!power_has_signals(IN_PGOOD_ALL_CORE)) - return POWER_S5G3; - break; - - case POWER_S0: - /* - * Check value of PG_EC_ALL_SYS_PWRGD to see if PCH_SYS_PWROK - * needs to be changed. If it's low->high transition, requires a - * 2msec delay. - */ - all_sys_pwrgd_in = gpio_get_level(GPIO_PG_EC_ALL_SYS_PWRGD); - all_sys_pwrgd_out = gpio_get_level(GPIO_PCH_SYS_PWROK); - - if (all_sys_pwrgd_in != all_sys_pwrgd_out) { - if (all_sys_pwrgd_in) - msleep(2); - gpio_set_level(GPIO_PCH_SYS_PWROK, all_sys_pwrgd_in); - } - break; - - default: - break; - } - - return common_intel_x86_power_handle_state(state); -} |