diff options
Diffstat (limited to 'baseboard/kukui/base_detect_kukui.c')
| -rw-r--r-- | baseboard/kukui/base_detect_kukui.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/baseboard/kukui/base_detect_kukui.c b/baseboard/kukui/base_detect_kukui.c deleted file mode 100644 index 68542b4fb6..0000000000 --- a/baseboard/kukui/base_detect_kukui.c +++ /dev/null @@ -1,231 +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. - */ - -#include "adc.h" -#include "base_state.h" -#include "board.h" -#include "charge_manager.h" -#include "console.h" -#include "gpio.h" -#include "hooks.h" -#include "timer.h" -#include "usb_pd.h" -#include "util.h" - -#define CPRINTS(format, args...) cprints(CC_USB, format, ## args) - -/* Krane base detection code */ - -/* Base detection and debouncing */ -#define BASE_DETECT_DEBOUNCE_US (20 * MSEC) - -/* - * If the base status is unclear (i.e. not within expected ranges, read - * the ADC value again every 500ms. - */ -#define BASE_DETECT_RETRY_US (500 * MSEC) - -enum kukui_pogo_device_type { - DEVICE_TYPE_ERROR = -2, - DEVICE_TYPE_UNKNOWN = -1, - DEVICE_TYPE_DETACHED = 0, -#ifdef VARIANT_KUKUI_POGO_DOCK - DEVICE_TYPE_DOCK, -#endif - DEVICE_TYPE_KEYBOARD, - DEVICE_TYPE_COUNT, -}; - -struct { - int mv_low, mv_high; -} static const pogo_detect_table[] = { - [DEVICE_TYPE_DETACHED] = {2700, 3500}, /* 10K, NC, around 3.3V */ -#ifdef VARIANT_KUKUI_POGO_DOCK - [DEVICE_TYPE_DOCK] = {141, 173}, /* 10K, 0.5K ohm */ -#endif - [DEVICE_TYPE_KEYBOARD] = {270, 400}, /* 10K, 1K ohm */ -}; -BUILD_ASSERT(ARRAY_SIZE(pogo_detect_table) == DEVICE_TYPE_COUNT); - -static uint64_t base_detect_debounce_time; -static enum kukui_pogo_device_type pogo_type; - -int kukui_pogo_extpower_present(void) -{ -#ifdef VARIANT_KUKUI_POGO_DOCK - return pogo_type == DEVICE_TYPE_DOCK && - gpio_get_level(GPIO_POGO_VBUS_PRESENT); -#else - return 0; -#endif -} - -static enum kukui_pogo_device_type get_device_type(int mv) -{ - int i; - - if (mv == ADC_READ_ERROR) - return DEVICE_TYPE_ERROR; - - for (i = 0; i < DEVICE_TYPE_COUNT; i++) { - if (pogo_detect_table[i].mv_low <= mv && - mv <= pogo_detect_table[i].mv_high) - return i; - } - - return DEVICE_TYPE_UNKNOWN; -} - -static void enable_charge(int enable) -{ -#ifdef VARIANT_KUKUI_POGO_DOCK - if (enable) { - struct charge_port_info info = { - .voltage = 5000, .current = 1500}; - /* - * Set supplier type to PD to have same priority as type c - * port. - */ - charge_manager_update_charge( - CHARGE_SUPPLIER_DEDICATED, CHARGE_PORT_POGO, &info); - } else { - charge_manager_update_charge( - CHARGE_SUPPLIER_DEDICATED, CHARGE_PORT_POGO, NULL); - } - pd_send_host_event(PD_EVENT_POWER_CHANGE); -#endif -} - -static void enable_power_supply(int enable) -{ - gpio_set_level(GPIO_EN_PP3300_POGO, enable); -} - -static void base_detect_deferred(void); -DECLARE_DEFERRED(base_detect_deferred); - -static void base_set_device_type(enum kukui_pogo_device_type device_type) -{ - switch (device_type) { - case DEVICE_TYPE_ERROR: - case DEVICE_TYPE_UNKNOWN: - hook_call_deferred(&base_detect_deferred_data, - BASE_DETECT_RETRY_US); - break; - - case DEVICE_TYPE_DETACHED: - enable_power_supply(0); - enable_charge(0); - base_set_state(0); - break; - -#ifdef VARIANT_KUKUI_POGO_DOCK - case DEVICE_TYPE_DOCK: - enable_power_supply(0); - enable_charge(1); - base_set_state(1); - break; -#endif - - case DEVICE_TYPE_KEYBOARD: - enable_charge(0); - enable_power_supply(1); - base_set_state(1); - break; - - case DEVICE_TYPE_COUNT: - /* should not happen */ - break; - } -} - -static void base_detect_deferred(void) -{ - uint64_t time_now = get_time().val; - int mv; - - if (base_detect_debounce_time > time_now) { - hook_call_deferred(&base_detect_deferred_data, - base_detect_debounce_time - time_now); - return; - } - - /* - * Disable interrupt first to prevent it triggered by value - * changed from 1 to disabled state(=0). - */ - gpio_disable_interrupt(GPIO_POGO_ADC_INT_L); - gpio_set_flags(GPIO_POGO_ADC_INT_L, GPIO_ANALOG); - mv = adc_read_channel(ADC_POGO_ADC_INT_L); - /* restore the pin function */ - gpio_set_flags(GPIO_POGO_ADC_INT_L, GPIO_INT_BOTH); - gpio_enable_interrupt(GPIO_POGO_ADC_INT_L); - - pogo_type = get_device_type(mv); - CPRINTS("POGO: adc=%d, type=%d", mv, pogo_type); - - base_set_device_type(pogo_type); -} - -void pogo_adc_interrupt(enum gpio_signal signal) -{ - uint64_t time_now = get_time().val; - - if (base_detect_debounce_time <= time_now) { - hook_call_deferred(&base_detect_deferred_data, - BASE_DETECT_DEBOUNCE_US); - } - - base_detect_debounce_time = time_now + BASE_DETECT_DEBOUNCE_US; -} - -static void pogo_chipset_init(void) -{ - /* Enable pogo interrupt */ - gpio_enable_interrupt(GPIO_POGO_ADC_INT_L); - - hook_call_deferred(&base_detect_deferred_data, 0); -} -DECLARE_HOOK(HOOK_INIT, pogo_chipset_init, HOOK_PRIO_DEFAULT); - -/* Called on AP S3 -> S5 transition */ -static void pogo_chipset_shutdown(void) -{ - /* Disable pogo interrupt */ - gpio_disable_interrupt(GPIO_POGO_ADC_INT_L); - - enable_power_supply(0); -} -DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, pogo_chipset_shutdown, HOOK_PRIO_DEFAULT); - -void base_force_state(enum ec_set_base_state_cmd state) -{ - if (state >= EC_SET_BASE_STATE_RESET) { - CPRINTS("BD forced reset"); - pogo_chipset_init(); - return; - } - - gpio_disable_interrupt(GPIO_POGO_ADC_INT_L); - pogo_type = (state == 1 ? DEVICE_TYPE_KEYBOARD : DEVICE_TYPE_DETACHED); - base_set_device_type(state == EC_SET_BASE_STATE_ATTACH - ? DEVICE_TYPE_KEYBOARD - : DEVICE_TYPE_DETACHED); - CPRINTS("BD forced %sconnected", state == EC_SET_BASE_STATE_ATTACH ? - "" : "dis"); -} - -#ifdef VARIANT_KUKUI_POGO_DOCK -static void board_pogo_charge_init(void) -{ - int i; - - /* Initialize all charge suppliers to 0 */ - for (i = 0; i < CHARGE_SUPPLIER_COUNT; i++) - charge_manager_update_charge(i, CHARGE_PORT_POGO, NULL); -} -DECLARE_HOOK(HOOK_INIT, board_pogo_charge_init, - HOOK_PRIO_CHARGE_MANAGER_INIT + 1); -#endif |