/* Copyright 2016 The ChromiumOS Authors
 * 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 "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"

/* Must come after other header files and interrupt handler declarations */
#include "gpio_list.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 LLC"),
	[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);