mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-07 16:11:43 +00:00
3060d32ff9
Adds dual USB-PD port support for samus. Both ports are in dual-role and can perform either role. Both ports work fine when only one of the ports is in use. But, still having problems with PD errors on the lower priority port (port 0). If you have a charger plugged into port 0, and a type-C USB dongle plugged into port 1, then port 1 has higher priority, and in the SRC_DISCONNECTED state, every 1.5 seconds when it sends source cap packet, we occasionally drop pings on port 0, which results in a lot of start/stop charging. BUG=chrome-os-partner:28585 BRANCH=none TEST=Tested on samus to make sure both ports work when I plug in a charger and a type-C USB dongle with a pull-down on the CC line. Tested on plankton and zinger to make sure PD works as expected. Change-Id: Ie7bde3e258f5cd23a0b82b626c0993a45b0df074 Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/200750 Reviewed-by: Vic Yang <victoryang@chromium.org> Tested-by: Vic Yang <victoryang@chromium.org>
125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Firefly board configuration */
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#include "adc.h"
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#include "adc_chip.h"
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#include "common.h"
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#include "console.h"
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#include "gpio.h"
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#include "hooks.h"
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#include "i2c.h"
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#include "registers.h"
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#include "task.h"
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#include "timer.h"
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#include "usb_pd.h"
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#include "util.h"
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/* Debounce time for voltage buttons */
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#define BUTTON_DEBOUNCE_US (100 * MSEC)
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static enum gpio_signal button_pressed;
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/* Handle debounced button press */
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static void button_deferred(void)
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{
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int mv;
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/* bounce ? */
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if (gpio_get_level(button_pressed) != 0)
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return;
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switch (button_pressed) {
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case GPIO_SW_PP20000:
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mv = 20000;
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break;
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case GPIO_SW_PP12000:
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mv = 12000;
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break;
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case GPIO_SW_PP5000:
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mv = 5000;
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break;
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default:
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mv = -1;
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}
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pd_request_source_voltage(0, mv);
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ccprintf("Button %d = %d => Vout=%d mV\n",
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button_pressed, gpio_get_level(button_pressed), mv);
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}
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DECLARE_DEFERRED(button_deferred);
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void button_event(enum gpio_signal signal)
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{
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button_pressed = signal;
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/* reset debounce time */
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hook_call_deferred(button_deferred, BUTTON_DEBOUNCE_US);
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}
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void vbus_event(enum gpio_signal signal)
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{
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ccprintf("VBUS! =%d\n", gpio_get_level(signal));
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task_wake(TASK_ID_PD);
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}
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void board_config_pre_init(void)
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{
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/* enable SYSCFG clock */
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STM32_RCC_APB2ENR |= 1 << 0;
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/* Remap USART DMA to match the USART driver */
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/*
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* the DMA mapping is :
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* Chan 2 : TIM1_CH1 (PD RX)
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* Chan 3 : SPI1_TX (PD TX)
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* Chan 4 : USART1_TX
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* Chan 5 : USART1_RX
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*/
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STM32_SYSCFG_CFGR1 |= (1 << 9) | (1 << 10);/* Remap USART1 RX/TX DMA */
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}
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#include "gpio_list.h"
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/* ADC channels */
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const struct adc_t adc_channels[] = {
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/* USB PD CC lines sensing. Converted to mV (3300mV/4096). */
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[ADC_CH_CC1_PD] = {"CC1_PD", 3300, 4096, 0, STM32_AIN(0)},
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[ADC_CH_CC2_PD] = {"CC2_PD", 3300, 4096, 0, STM32_AIN(2)},
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/* VBUS voltage sensing is behind a 10K/100K voltage divider */
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[ADC_CH_VBUS_SENSE] = {"VBUS", 36300, 4096, 0, STM32_AIN(5)},
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};
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BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
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/* I2C ports */
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const struct i2c_port_t i2c_ports[] = {
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};
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const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
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static void board_init(void)
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{
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gpio_enable_interrupt(GPIO_SW_PP20000);
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gpio_enable_interrupt(GPIO_SW_PP12000);
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gpio_enable_interrupt(GPIO_SW_PP5000);
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/* Enable interrupts on VBUS transitions. */
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gpio_enable_interrupt(GPIO_VBUS_WAKE);
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}
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DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
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static int command_volt(int argc, char **argv)
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{
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int millivolt = -1;
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if (argc >= 2) {
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char *e;
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millivolt = strtoi(argv[1], &e, 10) * 1000;
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}
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ccprintf("Request Vout=%d mV\n", millivolt);
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pd_request_source_voltage(0, millivolt);
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(volt, command_volt,
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"[5|12|20]",
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"set voltage through USB PD",
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NULL);
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