text: /* 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[] = {
  	{"i2c1", I2C_PORT_0, 400,
  		GPIO_I2C1_SCL, GPIO_I2C1_SDA},
  	{"i2c2", I2C_PORT_1, 400,
  		GPIO_I2C2_SCL, GPIO_I2C2_SDA},
  	{"i2c3", I2C_PORT_2, 400,
  		GPIO_I2C3_SCL, GPIO_I2C3_SDA},
  	{"fmpi2c4", FMPI2C_PORT_3, 900,
  		GPIO_FMPI2C_SCL, 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);
  