diff options
Diffstat (limited to 'power/rk3399.c')
| -rw-r--r-- | power/rk3399.c | 610 |
1 files changed, 0 insertions, 610 deletions
diff --git a/power/rk3399.c b/power/rk3399.c deleted file mode 100644 index 9db25f0b28..0000000000 --- a/power/rk3399.c +++ /dev/null @@ -1,610 +0,0 @@ -/* Copyright 2013 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. - */ - -/* rk3399 chipset power control module for Chrome EC */ - -/* - * The description of each CONFIG_CHIPSET_POWER_SEQ_VERSION: - * - * Version 0: Initial/default revision for clamshell / convertible. - * Version 1: Simplified power tree for tablet / detachable. - */ - -#include "charge_state.h" -#include "chipset.h" -#include "common.h" -#include "console.h" -#include "ec_commands.h" -#include "gpio.h" -#include "hooks.h" -#include "lid_switch.h" -#include "power.h" -#include "power_button.h" -#include "system.h" -#include "task.h" -#include "timer.h" -#include "usb_charge.h" -#include "util.h" - -/* Console output macros */ -#define CPUTS(outstr) cputs(CC_CHIPSET, outstr) -#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args) - -/* Input state flags */ -#if CONFIG_CHIPSET_POWER_SEQ_VERSION == 1 - #define IN_PGOOD_PP1250_S3 POWER_SIGNAL_MASK(PP1250_S3_PWR_GOOD) - #define IN_PGOOD_PP900_S0 POWER_SIGNAL_MASK(PP900_S0_PWR_GOOD) -#else - #define IN_PGOOD_PP5000 POWER_SIGNAL_MASK(PP5000_PWR_GOOD) - #define IN_PGOOD_SYS POWER_SIGNAL_MASK(SYS_PWR_GOOD) -#endif - -#define IN_PGOOD_AP POWER_SIGNAL_MASK(AP_PWR_GOOD) -#define IN_SUSPEND_DEASSERTED POWER_SIGNAL_MASK(SUSPEND_DEASSERTED) - -/* Rails requires for S3 and S0 */ -#if CONFIG_CHIPSET_POWER_SEQ_VERSION == 1 - #define IN_PGOOD_S3 (IN_PGOOD_PP1250_S3) - #define IN_PGOOD_S0 (IN_PGOOD_S3 | IN_PGOOD_PP900_S0 | IN_PGOOD_AP) - /* This board can optionally wake-on-USB in S3 */ - #define S3_USB_WAKE - /* This board has non-INT power signal pins */ - #define POWER_SIGNAL_POLLING - /* This board supports CR50 deep sleep mode */ - #define CR50_DEEP_SLEEP - /* - * If AP_PWR_GOOD assertion does not trigger an interrupt, poll the - * signal every 5ms, up to 200 times (~ 1 second timeout). - */ - #define PGOOD_S0_POLL_TIMEOUT (5 * MSEC) - #define PGOOD_S0_POLL_TRIES 200 -#else - #define IN_PGOOD_S3 (IN_PGOOD_PP5000) - #define IN_PGOOD_S0 (IN_PGOOD_S3 | IN_PGOOD_AP | IN_PGOOD_SYS) -#endif - -/* All inputs in the right state for S0 */ -#define IN_ALL_S0 (IN_PGOOD_S0 | IN_SUSPEND_DEASSERTED) - -/* Long power key press to force shutdown in S0 */ -#define FORCED_SHUTDOWN_DELAY (8 * SECOND) - -#define CHARGER_INITIALIZED_DELAY_MS 100 -#define CHARGER_INITIALIZED_TRIES 40 - -/* Data structure for a GPIO operation for power sequencing */ -struct power_seq_op { - /* enum gpio_signal in 8 bits */ - uint8_t signal; - uint8_t level; - /* Number of milliseconds to delay after setting signal to level */ - uint8_t delay; -}; -BUILD_ASSERT(GPIO_COUNT < 256); - -/* - * This is the power sequence for POWER_S5S3. - * The entries in the table are handled sequentially from the top - * to the bottom. - */ - -#if CONFIG_CHIPSET_POWER_SEQ_VERSION == 1 -static const struct power_seq_op s5s3_power_seq[] = { - { GPIO_PP900_S3_EN, 1, 2 }, - { GPIO_PP3300_S3_EN, 1, 2 }, - { GPIO_PP1800_S3_EN, 1, 2 }, - { GPIO_PP1250_S3_EN, 1, 2 }, -}; -#else -static const struct power_seq_op s5s3_power_seq[] = { - { GPIO_PPVAR_LOGIC_EN, 1, 0 }, - { GPIO_PP900_AP_EN, 1, 0 }, - { GPIO_PP900_PCIE_EN, 1, 2 }, - { GPIO_PP900_PMU_EN, 1, 0 }, - { GPIO_PP900_PLL_EN, 1, 0 }, - { GPIO_PP900_USB_EN, 1, 2 }, - { GPIO_SYS_RST_L, 0, 0 }, - { GPIO_PP1800_PMU_EN_L, 0, 2 }, - { GPIO_LPDDR_PWR_EN, 1, 2 }, - { GPIO_PP1800_USB_EN_L, 0, 2 }, - { GPIO_PP3300_USB_EN_L, 0, 0 }, - { GPIO_PP5000_EN, 1, 0 }, - { GPIO_PP3300_TRACKPAD_EN_L, 0, 1 }, - { GPIO_PP1800_LID_EN_L, 0, 0 }, - { GPIO_PP1800_SIXAXIS_EN_L, 0, 2 }, - { GPIO_PP1800_SENSOR_EN_L, 0, 0 }, -}; -#endif - -/* The power sequence for POWER_S3S0 */ -#if CONFIG_CHIPSET_POWER_SEQ_VERSION == 1 -static const struct power_seq_op s3s0_power_seq[] = { - { GPIO_AP_CORE_EN, 1, 2 }, - { GPIO_PP1800_S0_EN, 1, 0 }, -}; -#else -static const struct power_seq_op s3s0_power_seq[] = { - { GPIO_PPVAR_CLOGIC_EN, 1, 2 }, - { GPIO_PP900_DDRPLL_EN, 1, 2 }, - { GPIO_PP1800_AP_AVDD_EN_L, 0, 2 }, - { GPIO_AP_CORE_EN, 1, 2 }, - { GPIO_PP1800_S0_EN_L, 0, 2 }, - { GPIO_PP3300_S0_EN_L, 0, 0 }, -}; -#endif - -#ifdef S3_USB_WAKE -/* Sigs that may already be on in S3, if we need to wake-on-USB */ -static const struct power_seq_op s3s0_usb_wake_power_seq[] = { - { GPIO_PP900_S0_EN, 1, 2 }, - { GPIO_PP1800_USB_EN, 1, 2 }, - { GPIO_PP3300_S0_EN, 1, 2 }, -}; -#endif - -/* The power sequence for POWER_S0S3 */ -#if CONFIG_CHIPSET_POWER_SEQ_VERSION == 1 -static const struct power_seq_op s0s3_power_seq[] = { - { GPIO_AP_CORE_EN, 0, 20 }, -}; -#else -static const struct power_seq_op s0s3_power_seq[] = { - { GPIO_PP3300_S0_EN_L, 1, 20 }, - { GPIO_PP1800_S0_EN_L, 1, 1 }, - { GPIO_AP_CORE_EN, 0, 20 }, - { GPIO_PP1800_AP_AVDD_EN_L, 1, 1 }, - { GPIO_PP900_DDRPLL_EN, 0, 1 }, - { GPIO_PPVAR_CLOGIC_EN, 0, 0 }, -}; -#endif - -#ifdef S3_USB_WAKE -/* Sigs that need to be left on in S3, if we need to wake-on-USB */ -static const struct power_seq_op s0s3_usb_wake_power_seq[] = { - { GPIO_PP3300_S0_EN, 0, 20 }, - { GPIO_PP1800_S0_EN, 0, 1 }, - { GPIO_PP1800_USB_EN, 0, 1 }, - { GPIO_PP900_S0_EN, 0, 0 }, -}; -#endif - -/* The power sequence for POWER_S3S5 */ -#if CONFIG_CHIPSET_POWER_SEQ_VERSION == 1 -static const struct power_seq_op s3s5_power_seq[] = { - { GPIO_SYS_RST_L, 0, 0 }, - { GPIO_PP1250_S3_EN, 0, 2 }, - { GPIO_PP1800_S3_EN, 0, 2 }, - { GPIO_PP3300_S3_EN, 0, 2 }, - { GPIO_PP900_S3_EN, 0, 0 }, -}; -#else -static const struct power_seq_op s3s5_power_seq[] = { - { GPIO_PP1800_SENSOR_EN_L, 1, 0}, - { GPIO_PP1800_SIXAXIS_EN_L, 1, 0}, - { GPIO_PP1800_LID_EN_L, 1, 0 }, - { GPIO_PP3300_TRACKPAD_EN_L, 1, 0 }, - { GPIO_PP5000_EN, 0, 0 }, - { GPIO_PP3300_USB_EN_L, 1, 20 }, - { GPIO_PP1800_USB_EN_L, 1, 10 }, - { GPIO_LPDDR_PWR_EN, 0, 20 }, - { GPIO_PP1800_PMU_EN_L, 1, 2 }, - { GPIO_PP900_PLL_EN, 0, 0 }, - { GPIO_PP900_PMU_EN, 0, 0 }, - { GPIO_PP900_USB_EN, 0, 6 }, - { GPIO_PP900_PCIE_EN, 0, 0 }, - { GPIO_PP900_AP_EN, 0, 0 }, - { GPIO_PPVAR_LOGIC_EN, 0, 0 }, -}; -#endif - -static int forcing_shutdown; - -void chipset_force_shutdown(enum chipset_shutdown_reason reason) -{ - CPRINTS("%s(%d)", __func__, reason); - report_ap_reset(reason); - - /* - * Force power off. This condition will reset once the state machine - * transitions to G3. - */ - forcing_shutdown = 1; - task_wake(TASK_ID_CHIPSET); -} - -#define SYS_RST_HOLD_US (1 * MSEC) -void chipset_reset(enum chipset_reset_reason reason) -{ -#ifdef CONFIG_CMD_RTC - /* Print out the RTC to help correlate resets in logs. */ - print_system_rtc(CC_CHIPSET); -#endif - CPRINTS("%s(%d)", __func__, reason); - report_ap_reset(reason); - - /* Pulse SYS_RST */ - gpio_set_level(GPIO_SYS_RST_L, 0); - if (in_interrupt_context()) - udelay(SYS_RST_HOLD_US); - else - usleep(SYS_RST_HOLD_US); - gpio_set_level(GPIO_SYS_RST_L, 1); -} - -enum power_state power_chipset_init(void) -{ - if (system_jumped_to_this_image()) { - if ((power_get_signals() & IN_ALL_S0) == IN_ALL_S0) { - disable_sleep(SLEEP_MASK_AP_RUN); - CPRINTS("already in S0"); - return POWER_S0; - } - } else if (!(system_get_reset_flags() & EC_RESET_FLAG_AP_OFF)) - /* Auto-power on */ - chipset_exit_hard_off(); - - return POWER_G3; -} - -static void force_shutdown(void) -{ - forcing_shutdown = 1; - task_wake(TASK_ID_CHIPSET); -} -DECLARE_DEFERRED(force_shutdown); - -/* - * Debounce PGOOD_AP if we lose it suddenly during S0, since output voltage - * transitions may cause spurious pulses. - */ -#define PGOOD_AP_DEBOUNCE_TIMEOUT (100 * MSEC) - -/* - * The AP informs the EC of its S0 / S3 state through IN_SUSPEND_DEASSERTED / - * AP_EC_S3_S0_L. Latency between deassertion and power rails coming up must - * be minimized, so check for deassertion at various stages of our suspend - * power sequencing, and immediately transition out of suspend if necessary. - */ -#define SLEEP_INTERVAL_MS 5 -#define MSLEEP_CHECK_ABORTED_SUSPEND(msec) \ - do { \ - int sleep_remain = msec; \ - do { \ - msleep(MIN(sleep_remain, SLEEP_INTERVAL_MS)); \ - sleep_remain -= SLEEP_INTERVAL_MS; \ - if (!forcing_shutdown && \ - power_get_signals() & IN_SUSPEND_DEASSERTED) { \ - CPRINTS("suspend aborted"); \ - return POWER_S3S0; \ - } \ - } while (sleep_remain > 0); \ - } while (0) -BUILD_ASSERT(POWER_S3S0 != 0); - -/** - * Step through the power sequence table and do corresponding GPIO operations. - * - * @param power_seq_ops The pointer to the power sequence table. - * @param op_count The number of entries of power_seq_ops. - * @return non-zero if suspend aborted during POWER_S0S3, 0 otherwise. - */ -static int power_seq_run(const struct power_seq_op *power_seq_ops, int op_count) -{ - int i; - - for (i = 0; i < op_count; i++) { - gpio_set_level(power_seq_ops[i].signal, - power_seq_ops[i].level); - if (!power_seq_ops[i].delay) - continue; - if ((power_seq_ops == s0s3_power_seq) -#ifdef S3_USB_WAKE - || (power_seq_ops == s0s3_usb_wake_power_seq) -#endif - ) - MSLEEP_CHECK_ABORTED_SUSPEND(power_seq_ops[i].delay); - else - msleep(power_seq_ops[i].delay); - } - return 0; -} - -enum power_state power_handle_state(enum power_state state) -{ -#ifndef CR50_DEEP_SLEEP - static int sys_reset_asserted; -#endif -#ifdef S3_USB_WAKE - static int usb_wake_enabled; -#endif - int tries = 0; - - switch (state) { - case POWER_G3: - break; - - case POWER_S5: - if (forcing_shutdown) - return POWER_S5G3; - else - return POWER_S5S3; - break; - - case POWER_S3: - if (!power_has_signals(IN_PGOOD_S3) || forcing_shutdown) - return POWER_S3S5; - else if (power_get_signals() & IN_SUSPEND_DEASSERTED) - return POWER_S3S0; - break; - - case POWER_S0: - if (!power_has_signals(IN_PGOOD_S3) || - forcing_shutdown || - !(power_get_signals() & IN_SUSPEND_DEASSERTED)) - return POWER_S0S3; - -#if CONFIG_CHIPSET_POWER_SEQ_VERSION != 1 - /* - * Wait up to PGOOD_AP_DEBOUNCE_TIMEOUT for IN_PGOOD_AP to - * come back before transitioning back to S3. PGOOD_SYS can - * also glitch, with a glitch duration < 1ms, so debounce - * it here as well. - */ - if (power_wait_signals_timeout(IN_PGOOD_AP | IN_PGOOD_SYS, - PGOOD_AP_DEBOUNCE_TIMEOUT) - == EC_ERROR_TIMEOUT) - return POWER_S0S3; - - /* - * power_wait_signals_timeout() can block and consume task - * wake events, so re-verify the state of the world. - */ - if (!power_has_signals(IN_PGOOD_S3) || - forcing_shutdown || - !(power_get_signals() & IN_SUSPEND_DEASSERTED)) - return POWER_S0S3; -#endif - - break; - - case POWER_G3S5: - forcing_shutdown = 0; - - /* - * Allow time for charger to be initialized, in case we're - * trying to boot the AP with no battery. - */ - while (charge_prevent_power_on(0) && - tries++ < CHARGER_INITIALIZED_TRIES) { - msleep(CHARGER_INITIALIZED_DELAY_MS); - } - - /* Return to G3 if battery level is too low. */ - if (charge_want_shutdown() || - tries > CHARGER_INITIALIZED_TRIES) { - CPRINTS("power-up inhibited"); - chipset_force_shutdown( - CHIPSET_SHUTDOWN_BATTERY_INHIBIT); - return POWER_G3; - } - - /* Power up to next state */ - return POWER_S5; - - case POWER_S5S3: - power_seq_run(s5s3_power_seq, ARRAY_SIZE(s5s3_power_seq)); - -#ifndef CR50_DEEP_SLEEP - /* - * Assert SYS_RST now, to be released in S3S0, to avoid - * resetting the TPM soon after power-on. - */ - sys_reset_asserted = 1; -#endif - - if (power_wait_signals(IN_PGOOD_S3)) { - chipset_force_shutdown(CHIPSET_SHUTDOWN_WAIT); - return POWER_S3S5; - } - - /* Call hooks now that rails are up */ - hook_notify(HOOK_CHIPSET_STARTUP); - - /* Power up to next state */ - return POWER_S3; - - case POWER_S3S0: -#ifdef S3_USB_WAKE - /* Bring up S3 USB wake rails, if they are down */ - if (!usb_wake_enabled) - power_seq_run(s3s0_usb_wake_power_seq, - ARRAY_SIZE(s3s0_usb_wake_power_seq)); - usb_wake_enabled = 0; -#endif - power_seq_run(s3s0_power_seq, ARRAY_SIZE(s3s0_power_seq)); - -#ifndef CR50_DEEP_SLEEP - /* Release SYS_RST if we came from S5 */ - if (sys_reset_asserted) { -#endif - msleep(10); - gpio_set_level(GPIO_SYS_RST_L, 1); - -#ifndef CR50_DEEP_SLEEP - sys_reset_asserted = 0; - } -#endif - -#ifdef POWER_SIGNAL_POLLING - /* - * Poll power signals every PGOOD_S0_POLL_TIMEOUT us, since - * AP_PWR_GOOD assertion doesn't trigger a power signal - * interrupt. - */ - while (power_wait_signals_timeout(IN_PGOOD_S0, - PGOOD_S0_POLL_TIMEOUT) == EC_ERROR_TIMEOUT && - ++tries < PGOOD_S0_POLL_TRIES) - ; - - if (tries >= PGOOD_S0_POLL_TRIES) { - CPRINTS("power timeout on input; " - "wanted 0x%04x, got 0x%04x", - IN_PGOOD_S0, power_get_signals() & IN_PGOOD_S0); -#else - if (power_wait_signals(IN_PGOOD_S0)) { -#endif /* POWER_SIGNAL_POLLING */ - chipset_force_shutdown(CHIPSET_SHUTDOWN_WAIT); - return POWER_S0S3; - } - - /* Call hooks now that rails are up */ - hook_notify(HOOK_CHIPSET_RESUME); - - /* - * Disable idle task deep sleep. This means that the low - * power idle task will not go into deep sleep while in S0. - */ - disable_sleep(SLEEP_MASK_AP_RUN); - - /* Power up to next state */ - return POWER_S0; - - case POWER_S0S3: - /* Call hooks before we remove power rails */ - hook_notify(HOOK_CHIPSET_SUSPEND); - MSLEEP_CHECK_ABORTED_SUSPEND(20); - - if (power_seq_run(s0s3_power_seq, ARRAY_SIZE(s0s3_power_seq))) - return POWER_S3S0; - -#ifdef S3_USB_WAKE - /* Leave up rails needed for S3 USB wake, if requested */ - usb_wake_enabled = (power_get_host_sleep_state() == - HOST_SLEEP_EVENT_S3_WAKEABLE_SUSPEND); - if (!usb_wake_enabled && - power_seq_run(s0s3_usb_wake_power_seq, - ARRAY_SIZE(s0s3_usb_wake_power_seq))) - return POWER_S3S0; -#endif - - /* - * Enable idle task deep sleep. Allow the low power idle task - * to go into deep sleep in S3 or lower. - */ - enable_sleep(SLEEP_MASK_AP_RUN); - - /* - * In case the power button is held awaiting power-off timeout, - * power off immediately now that we're entering S3. - */ - if (power_button_is_pressed()) { - forcing_shutdown = 1; - hook_call_deferred(&force_shutdown_data, -1); - } - - return POWER_S3; - - case POWER_S3S5: -#ifdef S3_USB_WAKE - /* Make sure all S3 rails are off */ - if (usb_wake_enabled) { - power_seq_run(s0s3_usb_wake_power_seq, - ARRAY_SIZE(s0s3_usb_wake_power_seq)); - usb_wake_enabled = 0; - } -#endif - - /* Call hooks before we remove power rails */ - hook_notify(HOOK_CHIPSET_SHUTDOWN); - - power_seq_run(s3s5_power_seq, ARRAY_SIZE(s3s5_power_seq)); - - /* Call hooks after we remove power rails */ - hook_notify(HOOK_CHIPSET_SHUTDOWN_COMPLETE); - - /* Start shutting down */ - return POWER_S5; - - case POWER_S5G3: - return POWER_G3; - } - - return state; -} - -static void power_button_changed(void) -{ - static uint8_t tablet_boot_on_button_release; - - if (power_button_is_pressed()) { - if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) { -#if CONFIG_CHIPSET_POWER_SEQ_VERSION != 1 - /* Power up from off */ - chipset_exit_hard_off(); -#else - tablet_boot_on_button_release = 1; -#endif - } - /* Delayed power down from S0/S3, cancel on PB release */ - hook_call_deferred(&force_shutdown_data, - FORCED_SHUTDOWN_DELAY); - } else { -#if CONFIG_CHIPSET_POWER_SEQ_VERSION == 1 - if (tablet_boot_on_button_release) { - /* Power up from off */ - chipset_exit_hard_off(); - tablet_boot_on_button_release = 0; - } -#endif - /* Power button released, cancel deferred shutdown */ - hook_call_deferred(&force_shutdown_data, -1); - } -} -DECLARE_HOOK(HOOK_POWER_BUTTON_CHANGE, power_button_changed, HOOK_PRIO_DEFAULT); - -#ifdef CONFIG_LID_SWITCH -static void lid_changed(void) -{ - /* Power-up from off on lid open */ - if (lid_is_open() && chipset_in_state(CHIPSET_STATE_ANY_OFF)) - chipset_exit_hard_off(); -} -DECLARE_HOOK(HOOK_LID_CHANGE, lid_changed, HOOK_PRIO_DEFAULT); -#endif - -#ifdef POWER_SIGNAL_POLLING -/* - * Polling for non-INT power signal pins. - * Call power_signal_interrupt() when the GPIO status of those pins changes. - */ -static void power_signal_changed(void) -{ - static uint8_t in_signals; /* Current power signal status */ - uint8_t inew = 0; - const struct power_signal_info *s = power_signal_list; - int i; - - BUILD_ASSERT(POWER_SIGNAL_COUNT <= 8); - - for (i = 0; i < POWER_SIGNAL_COUNT; i++, s++) { - /* Skip if this is an INT pin. */ - if (s->gpio < GPIO_IH_COUNT) - continue; - - if (power_signal_is_asserted(s)) - inew |= 1 << i; - } - - if (inew != in_signals) { - /* - * Pass a fake power gpio_signal to power_signal_interrupt(). - * Note that here we make power_signal_interrupt() reentrant. - */ - power_signal_interrupt(POWER_SIGNAL_COUNT); - in_signals = inew; - } -} -DECLARE_HOOK(HOOK_TICK, power_signal_changed, HOOK_PRIO_DEFAULT); -#endif |