diff options
| -rw-r--r-- | zephyr/Kconfig | 21 | ||||
| -rw-r--r-- | zephyr/dts/bindings/switchcap/switchcap-gpio.yaml | 16 | ||||
| -rw-r--r-- | zephyr/dts/bindings/switchcap/switchcap-ln9310.yaml | 27 | ||||
| -rw-r--r-- | zephyr/shim/src/CMakeLists.txt | 4 | ||||
| -rw-r--r-- | zephyr/shim/src/switchcap_gpio.c | 47 | ||||
| -rw-r--r-- | zephyr/shim/src/switchcap_ln9310.c | 51 |
6 files changed, 165 insertions, 1 deletions
diff --git a/zephyr/Kconfig b/zephyr/Kconfig index 7041fd63ef..05b9d5d055 100644 --- a/zephyr/Kconfig +++ b/zephyr/Kconfig @@ -627,6 +627,22 @@ config PLATFORM_EC_SWITCH This also enables the "mmapinfo" console command to report the current state of all switches. +choice PLATFORM_EC_SWITCHCAP_TYPE + prompt "Enable switchcap support" + optional + help + Enable support for switchcap used to power on the AP. + If enabled, type of switchcap must be selected and node in device + tree must be added that describes the driver and pins used to control + the switchcap. + +config PLATFORM_EC_SWITCHCAP_GPIO + bool "GPIO controlled switchcap" + help + Enable support for the GPIO controlled switchcap. + Pins used for controlling the switchcap must be defined in board's + device tree. + config PLATFORM_EC_SWITCHCAP_LN9310 bool "LN9310 switchcap driver" depends on PLATFORM_EC_I2C @@ -634,7 +650,10 @@ config PLATFORM_EC_SWITCHCAP_LN9310 Enable support for the LION Semiconductor LN9310 switched capacitor converter. This will export definitions for ln9310_init, ln9310_interrupt, and ln9310_power_good, which - project-specific code should call appropriately. + project-specific code should call appropriately if there's + no switchcap node in device tree. + +endchoice config PLATFORM_EC_SYSTEM_UNLOCKED bool "System unlocked: allow dangerous commands while in development" diff --git a/zephyr/dts/bindings/switchcap/switchcap-gpio.yaml b/zephyr/dts/bindings/switchcap/switchcap-gpio.yaml new file mode 100644 index 0000000000..5d1a25bf94 --- /dev/null +++ b/zephyr/dts/bindings/switchcap/switchcap-gpio.yaml @@ -0,0 +1,16 @@ +description: SwitchCap controlled by gpios + +compatible: "switchcap-gpio" + +properties: + enable-pin: + type: phandle + required: true + description: | + GPIO used to enable the switch cap + + power-good-pin: + type: phandle + required: false + description: | + GPIO used to read if power is good diff --git a/zephyr/dts/bindings/switchcap/switchcap-ln9310.yaml b/zephyr/dts/bindings/switchcap/switchcap-ln9310.yaml new file mode 100644 index 0000000000..afd89aacc6 --- /dev/null +++ b/zephyr/dts/bindings/switchcap/switchcap-ln9310.yaml @@ -0,0 +1,27 @@ +description: SwitchCap controlled by LN9310 + +compatible: "switchcap-ln9310" + +properties: + enable-l-pin: + type: phandle + required: true + description: | + GPIO used to enable the switch cap - active low + + port: + type: phandle + required: true + description: | + I2C port used to communicate with controller + + addr-flags: + type: string + default: "LN9310_I2C_ADDR_0_FLAGS" + enum: + - "LN9310_I2C_ADDR_0_FLAGS" + - "LN9310_I2C_ADDR_1_FLAGS" + - "LN9310_I2C_ADDR_2_FLAGS" + - "LN9310_I2C_ADDR_3_FLAGS" + description: | + I2C address of controller diff --git a/zephyr/shim/src/CMakeLists.txt b/zephyr/shim/src/CMakeLists.txt index 7be2e75fb2..5fee14dfbd 100644 --- a/zephyr/shim/src/CMakeLists.txt +++ b/zephyr/shim/src/CMakeLists.txt @@ -33,6 +33,10 @@ zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_MOTIONSENSE zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_PANIC panic.c) zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_PWM pwm.c) zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_RTC rtc.c) +zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_SWITCHCAP_GPIO + switchcap_gpio.c) +zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_SWITCHCAP_LN9310 + switchcap_ln9310.c) zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_TEMP_SENSOR temp_sensors.c thermal.c) zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_TIMER hwtimer.c) diff --git a/zephyr/shim/src/switchcap_gpio.c b/zephyr/shim/src/switchcap_gpio.c new file mode 100644 index 0000000000..c635978b8b --- /dev/null +++ b/zephyr/shim/src/switchcap_gpio.c @@ -0,0 +1,47 @@ +/* Copyright 2021 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 <devicetree.h> +#include "common.h" +#include "gpio.h" + +#if DT_NODE_EXISTS(DT_PATH(switchcap)) + +#if !DT_NODE_HAS_COMPAT(DT_PATH(switchcap), switchcap_gpio) +#error "Invalid /switchcap node in device tree" +#endif + +#define SC_PIN_ENABLE_PHANDLE \ + DT_PHANDLE_BY_IDX(DT_PATH(switchcap), enable_pin, 0) +#define SC_PIN_ENABLE \ + GPIO_SIGNAL(SC_PIN_ENABLE_PHANDLE) + +#define SC_PIN_POWER_GOOD_PHANDLE \ + DT_PHANDLE_BY_IDX(DT_PATH(switchcap), power_good_pin, 0) +#define SC_PIN_POWER_GOOD_EXISTS \ + DT_NODE_EXISTS(SC_PIN_POWER_GOOD_PHANDLE) +#define SC_PIN_POWER_GOOD \ + GPIO_SIGNAL(SC_PIN_POWER_GOOD_PHANDLE) + +void board_set_switchcap_power(int enable) +{ + gpio_set_level(SC_PIN_ENABLE, enable); +} + +int board_is_switchcap_enabled(void) +{ + return gpio_get_level(SC_PIN_ENABLE); +} + +int board_is_switchcap_power_good(void) +{ +#if SC_PIN_POWER_GOOD_EXISTS + return gpio_get_level(SC_PIN_POWER_GOOD); +#else + return 1; +#endif +} + +#endif diff --git a/zephyr/shim/src/switchcap_ln9310.c b/zephyr/shim/src/switchcap_ln9310.c new file mode 100644 index 0000000000..997ed8d15f --- /dev/null +++ b/zephyr/shim/src/switchcap_ln9310.c @@ -0,0 +1,51 @@ +/* Copyright 2021 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 <devicetree.h> +#include "common.h" +#include "gpio.h" +#include "ln9310.h" + +#if DT_NODE_EXISTS(DT_PATH(switchcap)) + +#if !DT_NODE_HAS_COMPAT(DT_PATH(switchcap), switchcap_ln9310) +#error "Invalid /switchcap node in device tree" +#endif + +#define SC_PIN_ENABLE_L_PHANDLE \ + DT_PHANDLE_BY_IDX(DT_PATH(switchcap), enable_l_pin, 0) +#define SC_PIN_ENABLE_L \ + GPIO_SIGNAL(SC_PIN_ENABLE_L_PHANDLE) + +#define SC_PORT_PHANDLE \ + DT_PHANDLE(DT_PATH(switchcap), port) +#define SC_PORT \ + DT_ENUM_UPPER_TOKEN(SC_PORT_PHANDLE, enum_name) + +#define SC_ADDR_FLAGS \ + DT_ENUM_UPPER_TOKEN(DT_PATH(switchcap), addr_flags) + +void board_set_switchcap_power(int enable) +{ + gpio_set_level(SC_PIN_ENABLE_L, !enable); + ln9310_software_enable(enable); +} + +int board_is_switchcap_enabled(void) +{ + return !gpio_get_level(SC_PIN_ENABLE_L); +} + +int board_is_switchcap_power_good(void) +{ + return ln9310_power_good(); +} + +const struct ln9310_config_t ln9310_config = { + .i2c_port = SC_PORT, + .i2c_addr_flags = SC_ADDR_FLAGS, +}; + +#endif |