diff options
Diffstat (limited to 'chip/stm32/usb_hid.c')
| -rw-r--r-- | chip/stm32/usb_hid.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/chip/stm32/usb_hid.c b/chip/stm32/usb_hid.c deleted file mode 100644 index b8336fa0a0..0000000000 --- a/chip/stm32/usb_hid.c +++ /dev/null @@ -1,156 +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 "clock.h" -#include "common.h" -#include "config.h" -#include "console.h" -#include "gpio.h" -#include "hooks.h" -#include "link_defs.h" -#include "registers.h" -#include "task.h" -#include "timer.h" -#include "util.h" -#include "usb_descriptor.h" -#include "usb_hw.h" -#include "usb_hid.h" -#include "usb_hid_hw.h" - -/* Console output macro */ -#define CPRINTF(format, args...) cprintf(CC_USB, format, ## args) - -void hid_tx(int ep) -{ - /* clear IT */ - STM32_USB_EP(ep) = (STM32_USB_EP(ep) & EP_MASK); -} - -void hid_reset(int ep, usb_uint *hid_ep_tx_buf, int tx_len, - usb_uint *hid_ep_rx_buf, int rx_len) -{ - int i; - uint16_t ep_reg; - - btable_ep[ep].tx_addr = usb_sram_addr(hid_ep_tx_buf); - btable_ep[ep].tx_count = tx_len; - - /* STM32 USB SRAM needs to be accessed one U16 at a time */ - for (i = 0; i < DIV_ROUND_UP(tx_len, 2); i++) - hid_ep_tx_buf[i] = 0; - - ep_reg = (ep << 0) /* Endpoint Address */ | - EP_TX_VALID | - (3 << 9) /* interrupt EP */ | - EP_RX_DISAB; - - /* Enable RX for output reports */ - if (hid_ep_rx_buf && rx_len > 0) { - btable_ep[ep].rx_addr = usb_sram_addr(hid_ep_rx_buf); - btable_ep[ep].rx_count = ((rx_len + 1) / 2) << 10; - - ep_reg |= EP_RX_VALID; /* RX Valid */ - } - - STM32_USB_EP(ep) = ep_reg; -} - -/* - * Keep track of state in case we need to be called multiple times, - * if the report length is bigger than 64 bytes. - */ -static int report_left; -static const uint8_t *report_ptr; - -/* - * Send report through ep0_buf_tx. - * - * If report size is greater than USB packet size (64 bytes), rest of the - * reports will be saved in `report_ptr` and `report_left`, so we can call this - * function again to send the remain parts. - * - * @return 0 if entire report is sent, 1 if there are remaining data. - */ -static int send_report(usb_uint *ep0_buf_tx, - const uint8_t *report, - int report_size) -{ - int packet_size = MIN(report_size, USB_MAX_PACKET_SIZE); - - memcpy_to_usbram((void *) usb_sram_addr(ep0_buf_tx), - report, packet_size); - btable_ep[0].tx_count = packet_size; - /* report_left != 0 if report doesn't fit in 1 packet. */ - report_left = report_size - packet_size; - report_ptr = report + packet_size; - - STM32_TOGGLE_EP(0, EP_TX_RX_MASK, EP_TX_RX_VALID, - report_left ? 0 : EP_STATUS_OUT); - - return report_left ? 1 : 0; -} - -int hid_iface_request(usb_uint *ep0_buf_rx, usb_uint *ep0_buf_tx, - const struct usb_hid_config_t *config) -{ - const uint8_t *report_desc = config->report_desc; - int report_size = config->report_size; - const struct usb_hid_descriptor *hid_desc = config->hid_desc; - - if (!ep0_buf_rx) { - /* - * Continue previous transfer. We ignore report_desc/size here, - * which is fine as only one GET_DESCRIPTOR command comes at a - * time. - */ - if (report_left == 0) - return -1; - report_size = MIN(USB_MAX_PACKET_SIZE, report_left); - memcpy_to_usbram((void *) usb_sram_addr(ep0_buf_tx), - report_ptr, report_size); - btable_ep[0].tx_count = report_size; - report_left -= report_size; - report_ptr += report_size; - STM32_TOGGLE_EP(0, EP_TX_MASK, EP_TX_VALID, - report_left ? 0 : EP_STATUS_OUT); - return report_left ? 1 : 0; - } else if (ep0_buf_rx[0] == (USB_DIR_IN | USB_RECIP_INTERFACE | - (USB_REQ_GET_DESCRIPTOR << 8))) { - if (ep0_buf_rx[1] == (USB_HID_DT_REPORT << 8)) { - /* Setup : HID specific : Get Report descriptor */ - return send_report(ep0_buf_tx, report_desc, - MIN(ep0_buf_rx[3], report_size)); - } else if (ep0_buf_rx[1] == (USB_HID_DT_HID << 8)) { - /* Setup : HID specific : Get HID descriptor */ - memcpy_to_usbram_ep0_patch(hid_desc, sizeof(*hid_desc)); - btable_ep[0].tx_count = sizeof(*hid_desc); - STM32_TOGGLE_EP(0, EP_TX_RX_MASK, EP_TX_RX_VALID, - EP_STATUS_OUT); - return 0; - } - } else if (ep0_buf_rx[0] == (USB_DIR_IN | - USB_RECIP_INTERFACE | - USB_TYPE_CLASS | - (USB_HID_REQ_GET_REPORT << 8))) { - const uint8_t report_type = (ep0_buf_rx[1] >> 8) & 0xFF; - const uint8_t report_id = ep0_buf_rx[1] & 0xFF; - int retval; - - report_left = ep0_buf_rx[3]; - if (!config->get_report) /* not supported */ - return -1; - - retval = config->get_report(report_id, - report_type, - &report_ptr, - &report_left); - if (retval) - return retval; - - return send_report(ep0_buf_tx, report_ptr, report_left); - } - - return -1; -} |