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91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
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* Copyright (C) 2020 Cypress Semiconductor Corporation.
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* Copyright (C) 2020 Richard Hughes <richard@hughsie.com>
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*
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* SPDX-License-Identifier: LGPL-2.1+
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*/
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#include "config.h"
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#include "fu-ccgx-hid-device.h"
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struct _FuCcgxHidDevice
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{
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FuHidDevice parent_instance;
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};
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G_DEFINE_TYPE (FuCcgxHidDevice, fu_ccgx_hid_device, FU_TYPE_HID_DEVICE)
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#define FU_CCGX_HID_DEVICE_TIMEOUT 5000 /* ms */
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#define FU_CCGX_HID_DEVICE_RETRY_DELAY 30 /* ms */
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#define FU_CCGX_HID_DEVICE_RETRY_CNT 5
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static gboolean
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fu_ccgx_hid_device_enable_hpi_mode_cb (FuDevice *device,
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gpointer user_data,
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GError **error)
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{
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guint8 buf[5] = {0xEE, 0xBC, 0xA6, 0xB9, 0xA8};
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fu_device_set_status (device, FWUPD_STATUS_DEVICE_RESTART);
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if (!fu_hid_device_set_report (FU_HID_DEVICE (device), buf[0],
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buf, sizeof(buf),
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FU_CCGX_HID_DEVICE_TIMEOUT,
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FU_HID_DEVICE_FLAG_NONE,
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error)) {
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g_prefix_error (error, "switch to HPI mode error: ");
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return FALSE;
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}
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return TRUE;
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}
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static gboolean
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fu_ccgx_hid_device_detach (FuDevice *device, GError **error)
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{
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if (!fu_device_retry (device,
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fu_ccgx_hid_device_enable_hpi_mode_cb,
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FU_CCGX_HID_DEVICE_RETRY_CNT,
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NULL, error))
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return FALSE;
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fu_device_add_flag (device, FWUPD_DEVICE_FLAG_WAIT_FOR_REPLUG);
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return TRUE;
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}
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static gboolean
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fu_ccgx_hid_device_setup (FuDevice *device, GError **error)
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{
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/* This seems insane... but we need to switch the device from HID
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* mode to HPI mode at startup. The device continues to function
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* exactly as before and no user-visible effects are noted */
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if (!fu_device_retry (device,
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fu_ccgx_hid_device_enable_hpi_mode_cb,
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FU_CCGX_HID_DEVICE_RETRY_CNT,
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NULL, error))
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return FALSE;
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/* never add this device, the daemon does not expect the device to
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* disconnect before it is added */
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g_set_error_literal (error,
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FWUPD_ERROR,
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FWUPD_ERROR_NOT_SUPPORTED,
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"device is replugging into HPI mode");
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return FALSE;
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}
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static void
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fu_ccgx_hid_device_init (FuCcgxHidDevice *self)
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{
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fu_device_set_protocol (FU_DEVICE (self), "com.cypress.ccgx");
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fu_device_add_flag (FU_DEVICE (self), FWUPD_DEVICE_FLAG_REQUIRE_AC);
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fu_device_add_flag (FU_DEVICE (self), FWUPD_DEVICE_FLAG_WILL_DISAPPEAR);
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fu_device_retry_set_delay (FU_DEVICE (self), FU_CCGX_HID_DEVICE_RETRY_DELAY);
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}
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static void
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fu_ccgx_hid_device_class_init (FuCcgxHidDeviceClass *klass)
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{
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FuDeviceClass *klass_device = FU_DEVICE_CLASS (klass);
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klass_device->detach = fu_ccgx_hid_device_detach;
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klass_device->setup = fu_ccgx_hid_device_setup;
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}
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