diff options
Diffstat (limited to 'board/discovery-stm32f072/board.c')
| -rw-r--r-- | board/discovery-stm32f072/board.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/board/discovery-stm32f072/board.c b/board/discovery-stm32f072/board.c deleted file mode 100644 index c7099f55d1..0000000000 --- a/board/discovery-stm32f072/board.c +++ /dev/null @@ -1,209 +0,0 @@ -/* Copyright 2014 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. - */ -/* STM32F072-discovery board configuration */ - -#include "common.h" -#include "ec_version.h" -#include "gpio.h" -#include "hooks.h" -#include "queue_policies.h" -#include "registers.h" -#include "spi.h" -#include "task.h" -#include "usart-stm32f0.h" -#include "usart_tx_dma.h" -#include "usart_rx_dma.h" -#include "usb_gpio.h" -#include "usb_spi.h" -#include "usb-stream.h" -#include "util.h" - -/****************************************************************************** - * Build GPIO tables and expose a subset of the GPIOs over USB. - */ -void button_event(enum gpio_signal signal); - -#include "gpio_list.h" - -static enum gpio_signal const usb_gpio_list[] = { - GPIO_USER_BUTTON, - GPIO_LED_U, - GPIO_LED_D, - GPIO_LED_L, - GPIO_LED_R, -}; - -/* - * This instantiates struct usb_gpio_config const usb_gpio, plus several other - * variables, all named something beginning with usb_gpio_ - */ -USB_GPIO_CONFIG(usb_gpio, - usb_gpio_list, - USB_IFACE_GPIO, - USB_EP_GPIO); - -/****************************************************************************** - * Setup USART1 as a loopback device, it just echo's back anything sent to it. - */ -static struct usart_config const loopback_usart; - -static struct queue const loopback_queue = - QUEUE_DIRECT(64, uint8_t, - loopback_usart.producer, - loopback_usart.consumer); - -static struct usart_rx_dma const loopback_rx_dma = - USART_RX_DMA(STM32_DMAC_CH3, 8); - -static struct usart_tx_dma const loopback_tx_dma = - USART_TX_DMA(STM32_DMAC_CH2, 16); - -static struct usart_config const loopback_usart = - USART_CONFIG(usart1_hw, - loopback_rx_dma.usart_rx, - loopback_tx_dma.usart_tx, - 115200, - 0, - loopback_queue, - loopback_queue); - -/****************************************************************************** - * Forward USART4 as a simple USB serial interface. - */ -static struct usart_config const forward_usart; -struct usb_stream_config const forward_usb; - -static struct queue const usart_to_usb = QUEUE_DIRECT(64, uint8_t, - forward_usart.producer, - forward_usb.consumer); -static struct queue const usb_to_usart = QUEUE_DIRECT(64, uint8_t, - forward_usb.producer, - forward_usart.consumer); - -static struct usart_tx_dma const forward_tx_dma = - USART_TX_DMA(STM32_DMAC_CH7, 16); - -static struct usart_config const forward_usart = - USART_CONFIG(usart4_hw, - usart_rx_interrupt, - forward_tx_dma.usart_tx, - 115200, - 0, - usart_to_usb, - usb_to_usart); - -#define USB_STREAM_RX_SIZE 16 -#define USB_STREAM_TX_SIZE 16 - -USB_STREAM_CONFIG(forward_usb, - USB_IFACE_STREAM, - USB_STR_STREAM_NAME, - USB_EP_STREAM, - USB_STREAM_RX_SIZE, - USB_STREAM_TX_SIZE, - usb_to_usart, - usart_to_usb) - -/****************************************************************************** - * Handle button presses by cycling the LEDs on the board. Also run a tick - * handler to cycle them when they are not actively under USB control. - */ -void button_event(enum gpio_signal signal) -{ - static int count; - - gpio_set_level(GPIO_LED_U, (count & 0x03) == 0); - gpio_set_level(GPIO_LED_R, (count & 0x03) == 1); - gpio_set_level(GPIO_LED_D, (count & 0x03) == 2); - gpio_set_level(GPIO_LED_L, (count & 0x03) == 3); - - count++; -} - -void usb_gpio_tick(void) -{ - if (usb_gpio.state->set_mask || usb_gpio.state->clear_mask) - return; - - button_event(0); -} -DECLARE_HOOK(HOOK_TICK, usb_gpio_tick, HOOK_PRIO_DEFAULT); - -/****************************************************************************** - * 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("discovery-stm32f072"), - [USB_STR_VERSION] = USB_STRING_DESC(CROS_EC_VERSION32), - [USB_STR_STREAM_NAME] = USB_STRING_DESC("Forward"), - [USB_STR_CONSOLE_NAME] = USB_STRING_DESC("Shell"), -}; - -BUILD_ASSERT(ARRAY_SIZE(usb_strings) == USB_STR_COUNT); - - -/****************************************************************************** - * Support SPI bridging over USB, this requires usb_spi_board_enable and - * usb_spi_board_disable to be defined to enable and disable the SPI bridge. - */ - -/* SPI devices */ -const struct spi_device_t spi_devices[] = { - { CONFIG_SPI_FLASH_PORT, 0, GPIO_SPI_CS}, -}; -const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices); - -void usb_spi_board_enable(struct usb_spi_config const *config) -{ - /* Remap SPI2 to DMA channels 6 and 7 */ - STM32_SYSCFG_CFGR1 |= BIT(24); - - /* Configure SPI GPIOs */ - gpio_config_module(MODULE_SPI_FLASH, 1); - - /* Set all four SPI pins to high speed */ - STM32_GPIO_OSPEEDR(GPIO_B) |= 0xff000000; - - /* Enable clocks to SPI2 module */ - STM32_RCC_APB1ENR |= STM32_RCC_PB1_SPI2; - - /* Reset SPI2 */ - STM32_RCC_APB1RSTR |= STM32_RCC_PB1_SPI2; - STM32_RCC_APB1RSTR &= ~STM32_RCC_PB1_SPI2; - - spi_enable(&spi_devices[0], 1); -} - -void usb_spi_board_disable(struct usb_spi_config const *config) -{ - spi_enable(&spi_devices[0], 0); - - /* Disable clocks to SPI2 module */ - STM32_RCC_APB1ENR &= ~STM32_RCC_PB1_SPI2; - - /* Release SPI GPIOs */ - gpio_config_module(MODULE_SPI_FLASH, 0); -} - -USB_SPI_CONFIG(usb_spi, USB_IFACE_SPI, USB_EP_SPI, 0); - -/****************************************************************************** - * Initialize board. - */ -static void board_init(void) -{ - gpio_enable_interrupt(GPIO_USER_BUTTON); - - queue_init(&loopback_queue); - queue_init(&usart_to_usb); - queue_init(&usb_to_usart); - usart_init(&loopback_usart); - usart_init(&forward_usart); - - usb_spi_enable(&usb_spi, 1); -} -DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT); |