Extra omap code in linux-omap tree

[linux-2.6-omap-h63xx.git] / drivers / bluetooth / hci_h4p / fw.c

diff --git a/drivers/bluetooth/hci_h4p/fw.c b/drivers/bluetooth/hci_h4p/fw.c
new file mode 100644 (file)
index 0000000..792b6b7
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/fw.c
@@ -0,0 +1,152 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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 St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/skbuff.h>
+#include <linux/firmware.h>
+#include <linux/clk.h>
+
+#include <net/bluetooth/bluetooth.h>
+
+#include "hci_h4p.h"
+
+static int fw_pos;
+
+/* Firmware handling */
+static int hci_h4p_open_firmware(struct hci_h4p_info *info,
+                                const struct firmware **fw_entry)
+{
+       int err;
+
+       fw_pos = 0;
+       NBT_DBG_FW("Opening %d firmware\n", info->chip_type);
+       switch (info->chip_type) {
+       case BT_CHIP_TI:
+               err = request_firmware(fw_entry, "brf6150fw.bin", info->dev);
+               break;
+       case BT_CHIP_CSR:
+               err = request_firmware(fw_entry, "bc4fw.bin", info->dev);
+               break;
+       default:
+               dev_err(info->dev, "Invalid chip type\n");
+               *fw_entry = NULL;
+               err = -EINVAL;
+       }
+
+       return err;
+}
+
+static void hci_h4p_close_firmware(const struct firmware *fw_entry)
+{
+       release_firmware(fw_entry);
+}
+
+/* Read fw. Return length of the command. If no more commands in
+ * fw 0 is returned. In error case return value is negative.
+ */
+static int hci_h4p_read_fw_cmd(struct hci_h4p_info *info, struct sk_buff **skb,
+                              const struct firmware *fw_entry, int how)
+{
+       unsigned int cmd_len;
+
+       if (fw_pos >= fw_entry->size) {
+               return 0;
+       }
+
+       cmd_len = fw_entry->data[fw_pos++];
+       if (!cmd_len)
+               return 0;
+
+       if (fw_pos + cmd_len > fw_entry->size) {
+               dev_err(info->dev, "Corrupted firmware image\n");
+               return -EMSGSIZE;
+       }
+
+       *skb = bt_skb_alloc(cmd_len, how);
+       if (!*skb) {
+               dev_err(info->dev, "Cannot reserve memory for buffer\n");
+               return -ENOMEM;
+       }
+       memcpy(skb_put(*skb, cmd_len), &fw_entry->data[fw_pos], cmd_len);
+
+       fw_pos += cmd_len;
+
+       return (*skb)->len;
+}
+
+int hci_h4p_read_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue)
+{
+       const struct firmware *fw_entry = NULL;
+       struct sk_buff *skb = NULL;
+       int err;
+
+       err = hci_h4p_open_firmware(info, &fw_entry);
+       if (err < 0 || !fw_entry)
+               goto err_clean;
+
+       while ((err = hci_h4p_read_fw_cmd(info, &skb, fw_entry, GFP_KERNEL))) {
+               if (err < 0 || !skb)
+                       goto err_clean;
+
+               skb_queue_tail(fw_queue, skb);
+       }
+
+err_clean:
+       hci_h4p_close_firmware(fw_entry);
+       return err;
+}
+
+int hci_h4p_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue)
+{
+       int err;
+
+       switch(info->chip_type) {
+       case BT_CHIP_CSR:
+               err = hci_h4p_bc4_send_fw(info, fw_queue);
+               break;
+       case BT_CHIP_TI:
+               err = hci_h4p_brf6150_send_fw(info, fw_queue);
+               break;
+       default:
+               dev_err(info->dev, "Don't know how to send firmware\n");
+               err = -EINVAL;
+       }
+
+       return err;
+}
+
+void hci_h4p_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
+{
+       switch (info->chip_type) {
+       case BT_CHIP_CSR:
+               hci_h4p_bc4_parse_fw_event(info, skb);
+               break;
+       case BT_CHIP_TI:
+               hci_h4p_brf6150_parse_fw_event(info, skb);
+               break;
+       default:
+               dev_err(info->dev, "Don't know how to parse fw event\n");
+               info->fw_error = -EINVAL;
+       }
+
+       return;
+}