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Diffstat (limited to 'chip/stm32/usb_gpio.h')
| -rw-r--r-- | chip/stm32/usb_gpio.h | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/chip/stm32/usb_gpio.h b/chip/stm32/usb_gpio.h deleted file mode 100644 index b27c7f9485..0000000000 --- a/chip/stm32/usb_gpio.h +++ /dev/null @@ -1,130 +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. - */ -#ifndef __CROS_EC_USB_GPIO_H -#define __CROS_EC_USB_GPIO_H - -/* STM32 USB GPIO driver for Chrome EC */ - -#include "compile_time_macros.h" -#include "usb_descriptor.h" -#include "usb_hw.h" - -struct usb_gpio_state { - uint32_t set_mask; - uint32_t clear_mask; -}; - -/* - * Compile time Per-USB gpio configuration stored in flash. Instances of this - * structure are provided by the user of the USB gpio. This structure binds - * together all information required to operate a USB gpio. - */ -struct usb_gpio_config { - struct usb_gpio_state *state; - - /* - * Endpoint index, and pointers to the USB packet RAM buffers. - */ - int endpoint; - - usb_uint *rx_ram; - usb_uint *tx_ram; - - /* - * GPIO list - */ - enum gpio_signal const *gpios; - size_t num_gpios; -}; - -#define USB_GPIO_RX_PACKET_SIZE 8 -#define USB_GPIO_TX_PACKET_SIZE 4 - -/* - * Convenience macro for defining a USB GPIO driver and its associated state. - * - * NAME is used to construct the names of the trampoline functions, - * usb_gpio_state struct, and usb_gpio_config struct, the latter is just - * called NAME. - * - * INTERFACE is the index of the USB interface to associate with this - * GPIO driver. - * - * ENDPOINT is the index of the USB bulk endpoint used for receiving and - * transmitting bytes. - */ -#define USB_GPIO_CONFIG(NAME, \ - GPIO_LIST, \ - INTERFACE, \ - ENDPOINT) \ - BUILD_ASSERT(ARRAY_SIZE(GPIO_LIST) <= 32); \ - static usb_uint CONCAT2(NAME, _ep_rx_buffer)[USB_GPIO_RX_PACKET_SIZE / 2] __usb_ram; \ - static usb_uint CONCAT2(NAME, _ep_tx_buffer)[USB_GPIO_TX_PACKET_SIZE / 2] __usb_ram; \ - struct usb_gpio_config const NAME = { \ - .state = &((struct usb_gpio_state){}), \ - .endpoint = ENDPOINT, \ - .rx_ram = CONCAT2(NAME, _ep_rx_buffer), \ - .tx_ram = CONCAT2(NAME, _ep_tx_buffer), \ - .gpios = GPIO_LIST, \ - .num_gpios = ARRAY_SIZE(GPIO_LIST), \ - }; \ - const struct usb_interface_descriptor \ - USB_IFACE_DESC(INTERFACE) = { \ - .bLength = USB_DT_INTERFACE_SIZE, \ - .bDescriptorType = USB_DT_INTERFACE, \ - .bInterfaceNumber = INTERFACE, \ - .bAlternateSetting = 0, \ - .bNumEndpoints = 2, \ - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, \ - .bInterfaceSubClass = 0, \ - .bInterfaceProtocol = 0, \ - .iInterface = 0, \ - }; \ - const struct usb_endpoint_descriptor \ - USB_EP_DESC(INTERFACE, 0) = { \ - .bLength = USB_DT_ENDPOINT_SIZE, \ - .bDescriptorType = USB_DT_ENDPOINT, \ - .bEndpointAddress = 0x80 | ENDPOINT, \ - .bmAttributes = 0x02 /* Bulk IN */, \ - .wMaxPacketSize = USB_GPIO_TX_PACKET_SIZE, \ - .bInterval = 10, \ - }; \ - const struct usb_endpoint_descriptor \ - USB_EP_DESC(INTERFACE, 1) = { \ - .bLength = USB_DT_ENDPOINT_SIZE, \ - .bDescriptorType = USB_DT_ENDPOINT, \ - .bEndpointAddress = ENDPOINT, \ - .bmAttributes = 0x02 /* Bulk OUT */, \ - .wMaxPacketSize = USB_GPIO_RX_PACKET_SIZE, \ - .bInterval = 0, \ - }; \ - static void CONCAT2(NAME, _ep_tx)(void) \ - { \ - usb_gpio_tx(&NAME); \ - } \ - static void CONCAT2(NAME, _ep_rx)(void) \ - { \ - usb_gpio_rx(&NAME); \ - } \ - static void CONCAT2(NAME, _ep_event)(enum usb_ep_event evt) \ - { \ - usb_gpio_event(&NAME, evt); \ - } \ - USB_DECLARE_EP(ENDPOINT, \ - CONCAT2(NAME, _ep_tx), \ - CONCAT2(NAME, _ep_rx), \ - CONCAT2(NAME, _ep_event)) - - -/* - * These functions are used by the trampoline functions defined above to - * connect USB endpoint events with the generic USB GPIO driver. - */ -void usb_gpio_tx(struct usb_gpio_config const *config); -void usb_gpio_rx(struct usb_gpio_config const *config); -void usb_gpio_event(struct usb_gpio_config const *config, - enum usb_ep_event evt); - -#endif /* __CROS_EC_USB_GPIO_H */ |