/* Copyright 2016 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.
 */
/* Sweetberry board configuration */

#include "common.h"
#include "dma.h"
#include "ec_version.h"
#include "gpio.h"
#include "gpio_list.h"
#include "hooks.h"
#include "i2c.h"
#include "registers.h"
#include "stm32-dma.h"
#include "task.h"
#include "update_fw.h"
#include "usb_descriptor.h"
#include "usb_dwc_console.h"
#include "usb_dwc_i2c.h"
#include "usb_dwc_stream.h"
#include "usb_dwc_update.h"
#include "usb_hw.h"
#include "usb_power.h"
#include "util.h"

/******************************************************************************
 * 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("Sweetberry"),
	[USB_STR_SERIALNO]	= USB_STRING_DESC("1234-a"),
	[USB_STR_VERSION]	= USB_STRING_DESC(CROS_EC_VERSION32),
	[USB_STR_I2C_NAME]	= USB_STRING_DESC("I2C"),
	[USB_STR_CONSOLE_NAME]	= USB_STRING_DESC("Sweetberry EC Shell"),
	[USB_STR_UPDATE_NAME]	= USB_STRING_DESC("Firmware update"),
};

BUILD_ASSERT(ARRAY_SIZE(usb_strings) == USB_STR_COUNT);

/* USB power interface. */
USB_POWER_CONFIG(sweetberry_power, USB_IFACE_POWER, USB_EP_POWER);

struct dwc_usb usb_ctl = {
	.ep = {
		&ep0_ctl,
		&ep_console_ctl,
		&usb_update_ep_ctl,
		&sweetberry_power_ep_ctl,
		&i2c_usb__ep_ctl,
	},
	.speed = USB_SPEED_FS,
	.phy_type = USB_PHY_ULPI,
	.dma_en = 1,
	.irq = STM32_IRQ_OTG_HS,
};

/* I2C ports */
const struct i2c_port_t i2c_ports[] = {
	{
		.name = "i2c1",
		.port = I2C_PORT_0,
		.kbps = 400,
		.scl  = GPIO_I2C1_SCL,
		.sda  = GPIO_I2C1_SDA
	},
	{
		.name = "i2c2",
		.port = I2C_PORT_1,
		.kbps = 400,
		.scl  = GPIO_I2C2_SCL,
		.sda  = GPIO_I2C2_SDA
	},
	{
		.name = "i2c3",
		.port = I2C_PORT_2,
		.kbps = 400,
		.scl  = GPIO_I2C3_SCL,
		.sda  = GPIO_I2C3_SDA
	},
	{
		.name = "fmpi2c4",
		.port = FMPI2C_PORT_3,
		.kbps = 900,
		.scl  = GPIO_FMPI2C_SCL,
		.sda  = GPIO_FMPI2C_SDA
	},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);

int usb_i2c_board_is_enabled(void) { return 1; }

#define GPIO_SET_HS(bank, number)	\
	(STM32_GPIO_OSPEEDR(GPIO_##bank) |= (0x3 << ((number) * 2)))

void board_config_post_gpio_init(void)
{
	/* We use MCO2 clock passthrough to provide a clock to USB HS */
	gpio_config_module(MODULE_MCO, 1);
	/* GPIO PC9 to high speed */
	GPIO_SET_HS(C,  9);

	if (usb_ctl.phy_type == USB_PHY_ULPI)
		gpio_set_level(GPIO_USB_MUX_SEL, 0);
	else
		gpio_set_level(GPIO_USB_MUX_SEL, 1);

	/* Set USB GPIO to high speed */
	GPIO_SET_HS(A, 11);
	GPIO_SET_HS(A, 12);

	GPIO_SET_HS(C,  3);
	GPIO_SET_HS(C,  2);
	GPIO_SET_HS(C,  0);
	GPIO_SET_HS(A,  5);

	GPIO_SET_HS(B,  5);
	GPIO_SET_HS(B, 13);
	GPIO_SET_HS(B, 12);
	GPIO_SET_HS(B,  2);
	GPIO_SET_HS(B, 10);
	GPIO_SET_HS(B,  1);
	GPIO_SET_HS(B,  0);
	GPIO_SET_HS(A,  3);

	/* Set I2C GPIO to HS */
	GPIO_SET_HS(B,  6);
	GPIO_SET_HS(B,  7);
	GPIO_SET_HS(F,  1);
	GPIO_SET_HS(F,  0);
	GPIO_SET_HS(A,  8);
	GPIO_SET_HS(B,  4);
	GPIO_SET_HS(C,  6);
	GPIO_SET_HS(C,  7);
}

static void board_init(void)
{
	uint8_t tmp;

	/* i2c 0 has a tendancy to get wedged. TODO(nsanders): why? */
	i2c_xfer(0, 0, NULL, 0, &tmp, 1);
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
