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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /board/fluffy/board.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-stabilize-14682.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'board/fluffy/board.c')
-rw-r--r--board/fluffy/board.c405
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);
-}