Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / vt6656 / firmware.c

diff --git a/kernel/drivers/staging/vt6656/firmware.c b/kernel/drivers/staging/vt6656/firmware.c
new file mode 100644 (file)
index 0000000..d440f28
--- /dev/null
+++ b/kernel/drivers/staging/vt6656/firmware.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *
+ * File: baseband.c
+ *
+ * Purpose: Implement functions to access baseband
+ *
+ * Author: Yiching Chen
+ *
+ * Date: May 20, 2004
+ *
+ * Functions:
+ *
+ * Revision History:
+ *
+ */
+
+#include <linux/compiler.h>
+#include "firmware.h"
+#include "usbpipe.h"
+
+#define FIRMWARE_VERSION       0x133           /* version 1.51 */
+#define FIRMWARE_NAME          "vntwusb.fw"
+
+#define FIRMWARE_CHUNK_SIZE    0x400
+
+int vnt_download_firmware(struct vnt_private *priv)
+{
+       struct device *dev = &priv->usb->dev;
+       const struct firmware *fw;
+       int status;
+       void *buffer = NULL;
+       bool result = false;
+       u16 length;
+       int ii, rc;
+
+       dev_dbg(dev, "---->Download firmware\n");
+
+       rc = request_firmware(&fw, FIRMWARE_NAME, dev);
+       if (rc) {
+               dev_err(dev, "firmware file %s request failed (%d)\n",
+                       FIRMWARE_NAME, rc);
+                       goto out;
+       }
+
+       buffer = kmalloc(FIRMWARE_CHUNK_SIZE, GFP_KERNEL);
+       if (!buffer)
+               goto free_fw;
+
+       for (ii = 0; ii < fw->size; ii += FIRMWARE_CHUNK_SIZE) {
+               length = min_t(int, fw->size - ii, FIRMWARE_CHUNK_SIZE);
+               memcpy(buffer, fw->data + ii, length);
+
+               status = vnt_control_out(priv,
+                                               0,
+                                               0x1200+ii,
+                                               0x0000,
+                                               length,
+                                               buffer);
+
+               dev_dbg(dev, "Download firmware...%d %zu\n", ii, fw->size);
+
+               if (status != STATUS_SUCCESS)
+                       goto free_fw;
+       }
+
+       result = true;
+free_fw:
+       release_firmware(fw);
+
+out:
+       kfree(buffer);
+
+       return result;
+}
+MODULE_FIRMWARE(FIRMWARE_NAME);
+
+int vnt_firmware_branch_to_sram(struct vnt_private *priv)
+{
+       int status;
+
+       dev_dbg(&priv->usb->dev, "---->Branch to Sram\n");
+
+       status = vnt_control_out(priv,
+                                       1,
+                                       0x1200,
+                                       0x0000,
+                                       0,
+                                       NULL);
+       return status == STATUS_SUCCESS;
+}
+
+int vnt_check_firmware_version(struct vnt_private *priv)
+{
+       int status;
+
+       status = vnt_control_in(priv,
+                                       MESSAGE_TYPE_READ,
+                                       0,
+                                       MESSAGE_REQUEST_VERSION,
+                                       2,
+                                       (u8 *)&priv->firmware_version);
+
+       dev_dbg(&priv->usb->dev, "Firmware Version [%04x]\n",
+                                               priv->firmware_version);
+
+       if (status != STATUS_SUCCESS) {
+               dev_dbg(&priv->usb->dev, "Firmware Invalid.\n");
+               return false;
+       }
+       if (priv->firmware_version == 0xFFFF) {
+               dev_dbg(&priv->usb->dev, "In Loader.\n");
+               return false;
+       }
+
+       dev_dbg(&priv->usb->dev, "Firmware Version [%04x]\n",
+                                               priv->firmware_version);
+
+       if (priv->firmware_version < FIRMWARE_VERSION) {
+               /* branch to loader for download new firmware */
+               vnt_firmware_branch_to_sram(priv);
+               return false;
+       }
+       return true;
+}