mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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2a9f80d2d9
More modules can be disabled individually through CONFIG_ defines. Reordered early module pre-init and init, and added comments to explain why things are ordered in main() the way they are. Fixed a few assorted init-related bugs along the way, like st32m keyboard scan double-initializing. BUG=none TEST=build link, bds, daisy Signed-off-by: Randall Spangler <rspangler@chromium.org> Change-Id: I04a7fa51d743adfab4be4bdddaeef68943b96dec
130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
/* Copyright (c) 2012 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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/* USB charging control module for Chrome EC */
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#include "usb_charge.h"
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#include "board.h"
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#include "gpio.h"
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#include "uart.h"
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#include "console.h"
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#include "util.h"
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static void usb_charge_set_control_mode(int port_id, int mode)
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{
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if (port_id == 0) {
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gpio_set_level(GPIO_USB1_CTL1, (mode & 0x4) >> 2);
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gpio_set_level(GPIO_USB1_CTL2, (mode & 0x2) >> 1);
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gpio_set_level(GPIO_USB1_CTL3, mode & 0x1);
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}
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else if (port_id == 1) {
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gpio_set_level(GPIO_USB2_CTL1, (mode & 0x4) >> 2);
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gpio_set_level(GPIO_USB2_CTL2, (mode & 0x2) >> 1);
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gpio_set_level(GPIO_USB2_CTL3, mode & 0x1);
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}
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}
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static void usb_charge_set_enabled(int port_id, int en)
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{
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if (port_id == 0)
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gpio_set_level(GPIO_USB1_ENABLE, en);
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else
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gpio_set_level(GPIO_USB2_ENABLE, en);
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}
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static void usb_charge_set_ilim(int port_id, int sel)
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{
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if (port_id == 0)
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gpio_set_level(GPIO_USB1_ILIM_SEL, sel);
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else
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gpio_set_level(GPIO_USB2_ILIM_SEL, sel);
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}
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int usb_charge_set_mode(int port_id, enum usb_charge_mode mode)
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{
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if (port_id >= USB_CHARGE_PORT_COUNT)
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return EC_ERROR_INVAL;
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if (mode == USB_CHARGE_MODE_DISABLED) {
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usb_charge_set_enabled(port_id, 0);
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return EC_SUCCESS;
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}
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else
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usb_charge_set_enabled(port_id, 1);
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switch (mode) {
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case USB_CHARGE_MODE_CHARGE_AUTO:
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usb_charge_set_control_mode(port_id, 1);
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usb_charge_set_ilim(port_id, 1);
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break;
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case USB_CHARGE_MODE_CHARGE_BC12:
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usb_charge_set_control_mode(port_id, 4);
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break;
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case USB_CHARGE_MODE_DOWNSTREAM_500MA:
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usb_charge_set_control_mode(port_id, 2);
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usb_charge_set_ilim(port_id, 0);
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break;
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case USB_CHARGE_MODE_DOWNSTREAM_1500MA:
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usb_charge_set_control_mode(port_id, 2);
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usb_charge_set_ilim(port_id, 1);
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break;
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default:
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return EC_ERROR_UNKNOWN;
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}
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return EC_SUCCESS;
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}
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/*****************************************************************************/
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/* Console commands */
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static int command_set_mode(int argc, char **argv)
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{
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int port_id = -1;
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int mode = -1;
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char* endptr;
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if (argc != 3) {
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uart_puts("Usage: usbchargemode <port_id> <mode>\n");
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uart_puts("Modes: 0=Disabled.\n"
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" 1=Dedicated charging. Auto select.\n"
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" 2=Dedicated charging. BC 1.2.\n"
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" 3=Downstream. Max 500mA.\n"
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" 4=Downstream. Max 1.5A.\n");
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return EC_ERROR_UNKNOWN;
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}
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port_id = strtoi(argv[1], &endptr, 0);
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if (*endptr || port_id < 0 || port_id >= USB_CHARGE_PORT_COUNT) {
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uart_puts("Invalid port ID.\n");
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return EC_ERROR_UNKNOWN;
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}
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mode = strtoi(argv[2], &endptr, 0);
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if (*endptr || mode < 0 || mode >= USB_CHARGE_MODE_COUNT) {
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uart_puts("Invalid mode.\n");
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return EC_ERROR_UNKNOWN;
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}
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uart_printf("Setting USB mode...\n");
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return usb_charge_set_mode(port_id, mode);
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}
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DECLARE_CONSOLE_COMMAND(usbchargemode, command_set_mode);
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/*****************************************************************************/
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/* Initialization */
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int usb_charge_init(void)
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{
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int i;
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for (i = 0; i < USB_CHARGE_PORT_COUNT; ++i)
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usb_charge_set_mode(i, USB_CHARGE_MODE_DOWNSTREAM_500MA);
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return EC_SUCCESS;
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}
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