diff options
Diffstat (limited to 'chip/stm32/usb_gpio.c')
-rw-r--r-- | chip/stm32/usb_gpio.c | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/chip/stm32/usb_gpio.c b/chip/stm32/usb_gpio.c deleted file mode 100644 index 64d46875b5..0000000000 --- a/chip/stm32/usb_gpio.c +++ /dev/null @@ -1,89 +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. - */ - -#include "common.h" -#include "gpio.h" -#include "link_defs.h" -#include "registers.h" -#include "usb_gpio.h" - -void usb_gpio_tx(struct usb_gpio_config const *config) -{ - size_t i; - uint32_t mask = 1; - uint32_t value = 0; - - for (i = 0; i < config->num_gpios; ++i, mask <<= 1) - value |= (gpio_get_level(config->gpios[i])) ? mask : 0; - - config->tx_ram[0] = value; - config->tx_ram[1] = value >> 16; - - btable_ep[config->endpoint].tx_count = USB_GPIO_TX_PACKET_SIZE; - - /* - * TX packet updated, mark the packet as VALID. - */ - STM32_TOGGLE_EP(config->endpoint, EP_TX_MASK, EP_TX_VALID, 0); -} - -void usb_gpio_rx(struct usb_gpio_config const *config) -{ - size_t i; - uint32_t mask = 1; - uint32_t set_mask = ((uint32_t)(config->rx_ram[0]) | - (uint32_t)(config->rx_ram[1]) << 16); - uint32_t clear_mask = ((uint32_t)(config->rx_ram[2]) | - (uint32_t)(config->rx_ram[3]) << 16); - uint32_t ignore_mask = set_mask & clear_mask; - - config->state->set_mask = set_mask; - config->state->clear_mask = clear_mask; - - if ((btable_ep[config->endpoint].rx_count & RX_COUNT_MASK) == - USB_GPIO_RX_PACKET_SIZE) { - for (i = 0; i < config->num_gpios; ++i, mask <<= 1) { - if (ignore_mask & mask) - ; - else if (set_mask & mask) - gpio_set_level(config->gpios[i], 1); - else if (clear_mask & mask) - gpio_set_level(config->gpios[i], 0); - } - } - - /* - * RX packet consumed, mark the packet as VALID. - */ - STM32_TOGGLE_EP(config->endpoint, EP_RX_MASK, EP_RX_VALID, 0); -} - -void usb_gpio_event(struct usb_gpio_config const *config, enum usb_ep_event evt) -{ - int i; - - if (evt != USB_EVENT_RESET) - return; - - i = config->endpoint; - - btable_ep[i].tx_addr = usb_sram_addr(config->tx_ram); - btable_ep[i].tx_count = USB_GPIO_TX_PACKET_SIZE; - - btable_ep[i].rx_addr = usb_sram_addr(config->rx_ram); - btable_ep[i].rx_count = ((USB_GPIO_RX_PACKET_SIZE / 2) << 10); - - /* - * Initialize TX buffer with zero, the first IN transaction will fill - * this in with a valid value. - */ - config->tx_ram[0] = 0; - config->tx_ram[1] = 0; - - STM32_USB_EP(i) = ((i << 0) | /* Endpoint Addr*/ - (3 << 4) | /* TX Valid */ - (0 << 9) | /* Bulk EP */ - (3 << 12)); /* RX Valid */ -} |