diff options
Diffstat (limited to 'zephyr/program/nissa/src/sub_board.c')
| -rw-r--r-- | zephyr/program/nissa/src/sub_board.c | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/zephyr/program/nissa/src/sub_board.c b/zephyr/program/nissa/src/sub_board.c deleted file mode 100644 index e8e9648ba6..0000000000 --- a/zephyr/program/nissa/src/sub_board.c +++ /dev/null @@ -1,288 +0,0 @@ -/* 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. - */ - -/* Nissa sub-board hardware configuration */ - -#include "cros_board_info.h" -#include "driver/tcpm/tcpci.h" -#include "gpio/gpio_int.h" -#include "hooks.h" -#include "nissa_common.h" -#include "nissa_hdmi.h" -#include "task.h" -#include "usb_charge.h" -#include "usb_pd.h" -#include "usbc/usb_muxes.h" - -#include <zephyr/drivers/gpio.h> -#include <zephyr/drivers/pinctrl.h> -#include <zephyr/init.h> -#include <zephyr/kernel.h> -#include <zephyr/sys/printk.h> - -#include <ap_power/ap_power.h> - -LOG_MODULE_DECLARE(nissa, CONFIG_NISSA_LOG_LEVEL); - -#if NISSA_BOARD_HAS_HDMI_SUPPORT -static void hdmi_power_handler(struct ap_power_ev_callback *cb, - struct ap_power_ev_data data) -{ - /* Enable VCC on the HDMI port. */ - const struct gpio_dt_spec *s3_rail = - GPIO_DT_FROM_ALIAS(gpio_hdmi_en_odl); - /* Connect AP's DDC to sub-board (default is USB-C aux) */ - const struct gpio_dt_spec *ddc_select = - GPIO_DT_FROM_NODELABEL(gpio_hdmi_sel); - - switch (data.event) { - case AP_POWER_PRE_INIT: - LOG_DBG("Connecting HDMI DDC to sub-board"); - gpio_pin_set_dt(ddc_select, 1); - break; - case AP_POWER_STARTUP: - LOG_DBG("Enabling HDMI VCC"); - gpio_pin_set_dt(s3_rail, 1); - break; - case AP_POWER_SHUTDOWN: - LOG_DBG("Disabling HDMI VCC"); - gpio_pin_set_dt(s3_rail, 0); - break; - case AP_POWER_HARD_OFF: - LOG_DBG("Disconnecting HDMI sub-board DDC"); - gpio_pin_set_dt(ddc_select, 0); - break; - default: - LOG_ERR("Unhandled HDMI power event %d", data.event); - break; - } -} - -static void hdmi_hpd_interrupt(const struct device *device, - struct gpio_callback *callback, - gpio_port_pins_t pins) -{ - int state = gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_hpd_odl)); - - gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(gpio_ec_soc_hdmi_hpd), state); - LOG_DBG("HDMI HPD changed state to %d", state); -} - -void nissa_configure_hdmi_rails(void) -{ -#if DT_NODE_EXISTS(GPIO_DT_FROM_ALIAS(gpio_en_rails_odl)) - gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_en_rails_odl), - GPIO_OUTPUT_INACTIVE | GPIO_OPEN_DRAIN | - GPIO_PULL_UP | GPIO_ACTIVE_LOW); -#endif -} - -void nissa_configure_hdmi_vcc(void) -{ - gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_hdmi_en_odl), - GPIO_OUTPUT_INACTIVE | GPIO_OPEN_DRAIN | - GPIO_ACTIVE_LOW); -} - -__overridable void nissa_configure_hdmi_power_gpios(void) -{ - nissa_configure_hdmi_rails(); -} - -#ifdef CONFIG_SOC_IT8XXX2 -/* - * On it8xxx2, the below condition will break the EC to enter deep doze mode - * (b:237717730): - * Enhance i2c (GPE0/E7, GPH1/GPH2 or GPA4/GPA5) is enabled and its clock and - * data pins aren't both at high level. - * - * Since HDMI+type A SKU doesn't use i2c4, disable it for better power number. - */ -#define I2C4_NODE DT_NODELABEL(i2c4) -#if DT_NODE_EXISTS(I2C4_NODE) -PINCTRL_DT_DEFINE(I2C4_NODE); - -/* disable i2c4 alternate function */ -static void soc_it8xxx2_disable_i2c4_alt(void) -{ - const struct pinctrl_dev_config *pcfg = - PINCTRL_DT_DEV_CONFIG_GET(I2C4_NODE); - - pinctrl_apply_state(pcfg, PINCTRL_STATE_SLEEP); -} -#endif /* DT_NODE_EXISTS(I2C4_NODE) */ -#endif /* CONFIG_SOC_IT8XXX2 */ -#endif /* NISSA_BOARD_HAS_HDMI_SUPPORT */ - -static void lte_power_handler(struct ap_power_ev_callback *cb, - struct ap_power_ev_data data) -{ - /* Enable rails for S5 */ - const struct gpio_dt_spec *s5_rail = - GPIO_DT_FROM_ALIAS(gpio_en_sub_s5_rails); - switch (data.event) { - case AP_POWER_PRE_INIT: - LOG_DBG("Enabling LTE sub-board power rails"); - gpio_pin_set_dt(s5_rail, 1); - break; - case AP_POWER_HARD_OFF: - LOG_DBG("Disabling LTE sub-board power rails"); - gpio_pin_set_dt(s5_rail, 0); - break; - default: - LOG_ERR("Unhandled LTE power event %d", data.event); - break; - } -} - -/** - * Configure GPIOs (and other pin functions) that vary with present sub-board. - * - * The functions of some pins vary according to which sub-board is present - * (indicated by CBI fw_config); this function configures them according to the - * needs of the present sub-board. - */ -static void nereid_subboard_config(void) -{ - enum nissa_sub_board_type sb = nissa_get_sb_type(); - static struct ap_power_ev_callback power_cb; - - /* - * USB-A port: current limit output is configured by default and unused - * if this port is not present. VBUS enable must be configured if - * needed and is controlled by the usba-port-enable-pins driver. - */ - if (sb == NISSA_SB_C_A || sb == NISSA_SB_HDMI_A || - sb == NISSA_SB_NONE) { - /* - * Configure VBUS enable, retaining current value. - * SB_NONE indicates missing fw_config; it's safe to enable VBUS - * control in this case since all that will happen is we turn - * off power to LTE, and it's useful to allow USB-A to work in - * such a configuration. - */ - gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_en_usb_a1_vbus), - GPIO_OUTPUT); - } else { - /* Turn off unused pins */ - gpio_pin_configure_dt( - GPIO_DT_FROM_NODELABEL(gpio_sub_usb_a1_ilimit_sdp), - GPIO_DISCONNECTED); - gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_en_usb_a1_vbus), - GPIO_DISCONNECTED); - /* Disable second USB-A port enable GPIO */ - __ASSERT(USB_PORT_ENABLE_COUNT == 2, - "USB A port count != 2 (%d)", USB_PORT_ENABLE_COUNT); - usb_port_enable[1] = -1; - } - /* - * USB-C port: the default configuration has I2C on the I2C pins, - * but the interrupt line needs to be configured. - */ -#if CONFIG_USB_PD_PORT_MAX_COUNT > 1 - if (sb == NISSA_SB_C_A || sb == NISSA_SB_C_LTE) { - /* Configure interrupt input */ - gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_usb_c1_int_odl), - GPIO_INPUT | GPIO_PULL_UP); - } else { - /* Port doesn't exist, doesn't need muxing */ - USB_MUX_ENABLE_ALTERNATIVE(usb_mux_chain_1_no_mux); - } -#endif - - switch (sb) { -#if NISSA_BOARD_HAS_HDMI_SUPPORT - case NISSA_SB_HDMI_A: { - /* - * HDMI: two outputs control power which must be configured to - * non-default settings, and HPD must be forwarded to the AP - * on another output pin. - */ - const struct gpio_dt_spec *hpd_gpio = - GPIO_DT_FROM_ALIAS(gpio_hpd_odl); - static struct gpio_callback hdmi_hpd_cb; - int rv, irq_key; - - nissa_configure_hdmi_power_gpios(); - -#if CONFIG_SOC_IT8XXX2 && DT_NODE_EXISTS(I2C4_NODE) - /* disable i2c4 alternate function for better power number */ - soc_it8xxx2_disable_i2c4_alt(); -#endif - - /* - * Control HDMI power according to AP power state. Some events - * won't do anything if the corresponding pin isn't configured, - * but that's okay. - */ - ap_power_ev_init_callback( - &power_cb, hdmi_power_handler, - AP_POWER_PRE_INIT | AP_POWER_HARD_OFF | - AP_POWER_STARTUP | AP_POWER_SHUTDOWN); - ap_power_ev_add_callback(&power_cb); - - /* - * Configure HPD input from sub-board; it's inverted by a buffer - * on the sub-board. - */ - gpio_pin_configure_dt(hpd_gpio, GPIO_INPUT | GPIO_ACTIVE_LOW); - /* Register interrupt handler for HPD changes */ - gpio_init_callback(&hdmi_hpd_cb, hdmi_hpd_interrupt, - BIT(hpd_gpio->pin)); - gpio_add_callback(hpd_gpio->port, &hdmi_hpd_cb); - rv = gpio_pin_interrupt_configure_dt(hpd_gpio, - GPIO_INT_EDGE_BOTH); - __ASSERT(rv == 0, - "HPD interrupt configuration returned error %d", rv); - /* - * Run the HPD handler once to ensure output is in sync. - * Lock interrupts to ensure that we don't cause desync if an - * HPD interrupt comes in between the internal read of the input - * and write to the output. - */ - irq_key = irq_lock(); - hdmi_hpd_interrupt(hpd_gpio->port, &hdmi_hpd_cb, - BIT(hpd_gpio->pin)); - irq_unlock(irq_key); - break; - } -#endif - case NISSA_SB_C_LTE: - /* - * LTE: Set up callbacks for enabling/disabling - * sub-board power on S5 state. - */ - gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_en_sub_s5_rails), - GPIO_OUTPUT_INACTIVE); - /* Control LTE power when CPU entering or - * exiting S5 state. - */ - ap_power_ev_init_callback(&power_cb, lte_power_handler, - AP_POWER_HARD_OFF | - AP_POWER_PRE_INIT); - ap_power_ev_add_callback(&power_cb); - break; - - default: - break; - } -} -DECLARE_HOOK(HOOK_INIT, nereid_subboard_config, HOOK_PRIO_POST_FIRST); - -/* - * Enable interrupts - */ -static void board_init(void) -{ - /* - * Enable USB-C interrupts. - */ - gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c0)); -#if CONFIG_USB_PD_PORT_MAX_COUNT > 1 - if (board_get_usb_pd_port_count() == 2) - gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c1)); -#endif -} -DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT); |