diff options
Diffstat (limited to 'board/fluffy/board.c')
| -rw-r--r-- | board/fluffy/board.c | 405 |
1 files changed, 0 insertions, 405 deletions
diff --git a/board/fluffy/board.c b/board/fluffy/board.c deleted file mode 100644 index a4de29a160..0000000000 --- a/board/fluffy/board.c +++ /dev/null @@ -1,405 +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. - */ - -/* Fluffy configuration */ - -#include "adc.h" -#include "common.h" -#include "console.h" -#include "ec_version.h" -#include "hooks.h" -#include "i2c.h" -#include "usb_descriptor.h" -#include "registers.h" -#include "timer.h" -#include "usb_pd.h" -#include "util.h" - -#include "gpio_list.h" - -#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_SYSTEM, format, ## args) - -/****************************************************************************** - * Define the strings used in our USB descriptors. - */ - -const void *const usb_strings[] = { - [USB_STR_DESC] = usb_string_desc, - [USB_STR_VENDOR] = USB_STRING_DESC("Google Inc."), - [USB_STR_PRODUCT] = USB_STRING_DESC("Fluffy"), - /* This gets filled in at runtime. */ - [USB_STR_SERIALNO] = USB_STRING_DESC(""), - [USB_STR_VERSION] = USB_STRING_DESC(CROS_EC_VERSION32), - [USB_STR_CONSOLE_NAME] = USB_STRING_DESC("Fluffy Shell"), -}; - -BUILD_ASSERT(ARRAY_SIZE(usb_strings) == USB_STR_COUNT); - -/* ADC channels */ -const struct adc_t adc_channels[] = { - /* Sensing the VBUS voltage at the DUT side. Converted to mV. */ - [ADC_PPVAR_VBUS_DUT] = { - .name = "PPVAR_VBUS_DUT", - .factor_mul = 3300, - .factor_div = 4096, - .shift = 0, - .channel = STM32_AIN(0), - }, -}; -BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT); - -/* I2C ports */ -const struct i2c_port_t i2c_ports[] = { - { - .name = "master", - .port = 1, - .kbps = 400, - .scl = GPIO_I2C_SCL, - .sda = GPIO_I2C_SDA, - }, -}; -const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports); - -static enum gpio_signal enabled_port = GPIO_EN_C0; -static uint8_t output_en; - -static void print_port_status(void) -{ - if (!output_en) - CPRINTS("No ports enabled. zZZ"); - else - CPRINTS("Port %d is ON", enabled_port - GPIO_EN_C0); - - CPRINTS("CC Flip: %s", gpio_get_level(GPIO_EN_CC_FLIP) ? "YES" : "NO"); - CPRINTS("USB MUX: %s", gpio_get_level(GPIO_EN_USB_MUX2) ? "ON" : "OFF"); -} - -static int command_cc_flip(int argc, char *argv[]) -{ - int enable; - - if (argc != 2) - return EC_ERROR_PARAM_COUNT; - - if (!parse_bool(argv[1], &enable)) - return EC_ERROR_INVAL; - - if (output_en) { - gpio_set_level(enabled_port, 0); - gpio_set_level(GPIO_EN_USB_MUX2, 0); - /* Wait long enough for CC to discharge. */ - usleep(500 * MSEC); - } - - gpio_set_level(GPIO_EN_CC_FLIP, enable); - /* Allow some time for new CC configuration to settle. */ - usleep(500 * MSEC); - - if (output_en) { - gpio_set_level(enabled_port, 1); - gpio_set_level(GPIO_EN_USB_MUX2, 1); - } - - print_port_status(); - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(ccflip, command_cc_flip, - "<enable/disable>", - "enable or disable flipping CC orientation"); -/* - * Support tca6416 I2C ioexpander. - */ -#define GPIOX_I2C_ADDR_FLAGS 0x20 -#define GPIOX_IN_PORT_A 0x0 -#define GPIOX_IN_PORT_B 0x1 -#define GPIOX_OUT_PORT_A 0x2 -#define GPIOX_OUT_PORT_B 0x3 -#define GPIOX_DIR_PORT_A 0x6 -#define GPIOX_DIR_PORT_B 0x7 -#define I2C_PORT_MASTER 1 - -static void i2c_expander_init(void) -{ - gpio_set_level(GPIO_XP_RESET_L, 1); - - /* - * Setup P00, P02, P04, P10, and P12 on the I/O expander as an output. - */ - i2c_write8(I2C_PORT_MASTER, GPIOX_I2C_ADDR_FLAGS, - GPIOX_DIR_PORT_A, 0xea); - i2c_write8(I2C_PORT_MASTER, GPIOX_I2C_ADDR_FLAGS, - GPIOX_DIR_PORT_B, 0xfa); -} -DECLARE_HOOK(HOOK_INIT, i2c_expander_init, HOOK_PRIO_INIT_I2C+1); - -/* Write to a GPIO register on the tca6416 I2C ioexpander. */ -static void write_ioexpander(int bank, int gpio, int reg, int val) -{ - int tmp; - - /* Read output port register */ - i2c_read8(I2C_PORT_MASTER, GPIOX_I2C_ADDR_FLAGS, - reg + bank, &tmp); - if (val) - tmp |= BIT(gpio); - else - tmp &= ~BIT(gpio); - /* Write back modified output port register */ - i2c_write8(I2C_PORT_MASTER, GPIOX_I2C_ADDR_FLAGS, - reg + bank, tmp); -} - -enum led_ch { - LED_5V = 0, - LED_9V, - LED_12V, - LED_15V, - LED_20V, - LED_COUNT, -}; - -static void set_led(enum led_ch led, int enable) -{ - int bank; - int gpio; - - switch (led) { - case LED_5V: - bank = 0; - gpio = 0; - break; - - case LED_9V: - bank = 0; - gpio = 2; - break; - - case LED_12V: - bank = 0; - gpio = 4; - break; - - case LED_15V: - bank = 1; - gpio = 0; - break; - - case LED_20V: - bank = 1; - gpio = 2; - break; - - default: - return; - } - - /* - * Setup the LED as an output if enabled, otherwise as an input to keep - * the LEDs off. - */ - write_ioexpander(bank, gpio, GPIOX_DIR_PORT_A, !enable); - - /* The LEDs are active low. */ - if (enable) - write_ioexpander(bank, gpio, GPIOX_OUT_PORT_A, 0); -} - -void show_output_voltage_on_leds(void); -DECLARE_DEFERRED(show_output_voltage_on_leds); - -static void board_init(void) -{ - /* Do a sweeping LED dance. */ - for (enum led_ch led = 0; led < LED_COUNT; led++) { - set_led(led, 1); - msleep(100); - } - - msleep(500); - - for (enum led_ch led = 0; led < LED_COUNT; led++) - set_led(led, 0); - - show_output_voltage_on_leds(); -} -DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT); - - -enum usb_mux { - USB_MUX0 = 0, - USB_MUX1, - USB_MUX2, - USB_MUX_COUNT, -}; - -static void set_mux(enum usb_mux mux, uint8_t val) -{ - enum gpio_signal c0; - enum gpio_signal c1; - enum gpio_signal c2; - - switch (mux) { - case USB_MUX0: - c0 = GPIO_USB_MUX0_C0; - c1 = GPIO_USB_MUX0_C1; - c2 = GPIO_USB_MUX0_C2; - break; - - case USB_MUX1: - c0 = GPIO_USB_MUX1_C0; - c1 = GPIO_USB_MUX1_C1; - c2 = GPIO_USB_MUX1_C2; - break; - - case USB_MUX2: - c0 = GPIO_USB_MUX2_C0; - c1 = GPIO_USB_MUX2_C1; - c2 = GPIO_USB_MUX2_C2; - break; - - default: - break; - } - - val &= 0x7; - - gpio_set_level(c0, val & BIT(0)); - gpio_set_level(c1, val & BIT(1)); - gpio_set_level(c2, val & BIT(2)); -} - -/* This function assumes only 1 port works at a time. */ -static int command_portctl(int argc, char **argv) -{ - int port; - int enable; - - if (argc < 2) - return EC_ERROR_PARAM_COUNT; - - port = atoi(argv[1]); - if ((port < 0) || (port > 19) || !parse_bool(argv[2], &enable)) - return EC_ERROR_INVAL; - - gpio_set_level(GPIO_EN_USB_MUX2, 0); - - /* - * For each port, we must configure the USB 2.0 muxes and make sure that - * the power enables are configured as desired. - */ - - gpio_set_level(enabled_port, 0); - if (enabled_port != GPIO_EN_C0 + port) - CPRINTS("Port %d: disabled", enabled_port-GPIO_EN_C0); - - /* Allow time for an "unplug" to allow VBUS and CC to fall. */ - usleep(1 * SECOND); - - /* - * The USB 2.0 lines are arranged using 3x 8:1 muxes. Ports 0-7 are - * handled by the first mux, ports 8-15 are handled by the 2nd mux, then - * the outputs of those muxes are fed into the third mux along with - * ports 16-19. The schematic contains the truth table. - */ - if (enable) { - enabled_port = GPIO_EN_C0 + port; - gpio_set_level(enabled_port, 1); - - if (port < 8) { - set_mux(USB_MUX0, 7-port); - set_mux(USB_MUX2, 3); - } else if (port < 16) { - if (port < 14) - set_mux(USB_MUX1, 5-(port-8)); - else - set_mux(USB_MUX1, 7-(port-14)); - - set_mux(USB_MUX2, 1); - } else { - set_mux(USB_MUX2, 7-(port-16)); - } - - gpio_set_level(GPIO_EN_USB_MUX2, 1); - output_en = 1; - } else { - gpio_set_level(enabled_port, 0); - output_en = 0; - } - - print_port_status(); - return EC_SUCCESS; -} - -DECLARE_CONSOLE_COMMAND(portctl, command_portctl, - "<port# 0-19> <enable/disable>", - "enable or disable a port"); - -static int command_status(int argc, char **argv) -{ - int vbus_mv = adc_read_channel(ADC_PPVAR_VBUS_DUT); - - CPRINTS("PPVAR_VBUS_DUT: %dmV (raw: %d)", vbus_mv*7692/1000, - vbus_mv); - print_port_status(); - - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(status, command_status, NULL, "show current status"); - -/* - * According to the USB PD Spec, the minimum voltage for a fixed source is 95% - * of the new source voltage with an additional 500mV drop. - * - * vSrcNew | min | vSrcNew(min) + vSrcValid - * 5V | 4.75V | 4.25V | 553mV - * 9V | 8.55V | 8.05V | 1047mV - * 12V | 11.4V | 10.9V | 1417mV - * 15V | 14.25V | 13.75V | 1788mV - * 20V | 19V | 18.5V | 2405mV - * - * With the resistor divider that fluffy has, the ADC is only seeing 0.13 of the - * actual voltage. - */ -void show_output_voltage_on_leds(void) -{ - int read = adc_read_channel(ADC_PPVAR_VBUS_DUT); - uint32_t vbus_mv = (uint32_t)read; - static int prev_vbus_mv; - int i; - int act; - enum led_ch max_on_exclusive = LED_5V; - - if (read != ADC_READ_ERROR) { - if (vbus_mv >= 2405) - max_on_exclusive = LED_COUNT; - else if (vbus_mv >= 1788) - max_on_exclusive = LED_20V; - else if (vbus_mv >= 1417) - max_on_exclusive = LED_15V; - else if (vbus_mv >= 1047) - max_on_exclusive = LED_12V; - else if (vbus_mv >= 553) - max_on_exclusive = LED_9V; - - for (i = 0; i < LED_COUNT; i++) - set_led(i, i < max_on_exclusive); - - act = (vbus_mv * 76667) / 10000; - if ((vbus_mv > prev_vbus_mv+2) || (vbus_mv < prev_vbus_mv-2)) { - CPRINTS("PPVAR_VBUS_DUT: %d mV (raw: %d)", act, - vbus_mv); - prev_vbus_mv = vbus_mv; - } - } - - /* - * The reason we reschedule this ourselves as opposed to declaring it as - * a hook with a HOOK_TICK period is to allow the LED sweep sequence - * when the board boots up. - */ - hook_call_deferred(&show_output_voltage_on_leds_data, - 500 * MSEC); -} |