forked from mirrors/linux
Bluetooth: btbcm: Add support for Broadcom controller setup
To unify the controller setup of Broadcom devices between USB and UART transport, add the patchram download support into the Broadcom module. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann
parent
3e0ac12a1a
commit
1c8ba6d013
3 changed files with 272 additions and 0 deletions
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@ -4,6 +4,7 @@ menu "Bluetooth device drivers"
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config BT_BCM
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tristate
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select FW_LOADER
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config BT_HCIBTUSB
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tristate "HCI USB driver"
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@ -22,6 +22,8 @@
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*/
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <asm/unaligned.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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@ -93,6 +95,262 @@ int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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}
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EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
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static int btbcm_reset(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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int err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Reading local version info failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != sizeof(struct hci_rp_read_local_version)) {
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BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != 7) {
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BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Read USB product info failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != 5) {
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BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static const struct {
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u16 subver;
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const char *name;
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} bcm_subver_table[] = {
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{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
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{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
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{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
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{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
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{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
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{ 0x230f, "BCM4354A2" }, /* 001.003.015 */
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{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
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{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
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{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
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{ 0x610c, "BCM4354" }, /* 003.001.012 */
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{ }
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};
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int btbcm_setup_patchram(struct hci_dev *hdev)
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{
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const struct hci_command_hdr *cmd;
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const struct firmware *fw;
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const u8 *fw_ptr;
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size_t fw_size;
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char fw_name[64];
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u16 opcode, subver, rev, pid, vid;
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const char *hw_name = NULL;
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struct sk_buff *skb;
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struct hci_rp_read_local_version *ver;
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int i, err;
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/* Reset */
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err = btbcm_reset(hdev);
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if (err)
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return err;
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/* Read Local Version Info */
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skb = btbcm_read_local_version(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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ver = (struct hci_rp_read_local_version *)skb->data;
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rev = le16_to_cpu(ver->hci_rev);
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subver = le16_to_cpu(ver->lmp_subver);
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kfree_skb(skb);
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/* Read Verbose Config Version Info */
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skb = btbcm_read_verbose_config(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
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kfree_skb(skb);
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/* Read USB Product Info */
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skb = btbcm_read_usb_product(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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vid = get_unaligned_le16(skb->data + 1);
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pid = get_unaligned_le16(skb->data + 3);
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kfree_skb(skb);
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for (i = 0; bcm_subver_table[i].name; i++) {
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if (subver == bcm_subver_table[i].subver) {
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hw_name = bcm_subver_table[i].name;
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break;
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}
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}
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BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
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hw_name ? : "BCM", (subver & 0x7000) >> 13,
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(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
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snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
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hw_name ? : "BCM", vid, pid);
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err = request_firmware(&fw, fw_name, &hdev->dev);
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if (err < 0) {
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BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
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return 0;
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}
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/* Start Download */
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skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
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hdev->name, err);
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goto reset;
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}
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kfree_skb(skb);
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/* 50 msec delay after Download Minidrv completes */
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msleep(50);
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fw_ptr = fw->data;
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fw_size = fw->size;
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while (fw_size >= sizeof(*cmd)) {
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const u8 *cmd_param;
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cmd = (struct hci_command_hdr *)fw_ptr;
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fw_ptr += sizeof(*cmd);
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fw_size -= sizeof(*cmd);
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if (fw_size < cmd->plen) {
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BT_ERR("%s: BCM: patch %s is corrupted", hdev->name,
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fw_name);
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err = -EINVAL;
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goto reset;
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}
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cmd_param = fw_ptr;
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fw_ptr += cmd->plen;
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fw_size -= cmd->plen;
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opcode = le16_to_cpu(cmd->opcode);
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skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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BT_ERR("%s: BCM: patch command %04x failed (%d)",
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hdev->name, opcode, err);
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goto reset;
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}
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kfree_skb(skb);
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}
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/* 250 msec delay after Launch Ram completes */
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msleep(250);
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reset:
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/* Reset */
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err = btbcm_reset(hdev);
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if (err)
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goto done;
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/* Read Local Version Info */
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skb = btbcm_read_local_version(hdev);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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goto done;
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}
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ver = (struct hci_rp_read_local_version *)skb->data;
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rev = le16_to_cpu(ver->hci_rev);
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subver = le16_to_cpu(ver->lmp_subver);
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kfree_skb(skb);
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BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
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hw_name ? : "BCM", (subver & 0x7000) >> 13,
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(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
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btbcm_check_bdaddr(hdev);
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done:
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release_firmware(fw);
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return err;
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}
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EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
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int btbcm_setup_apple(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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/* Read Verbose Config Version Info */
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skb = btbcm_read_verbose_config(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
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get_unaligned_le16(skb->data + 5));
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_setup_apple);
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MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
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MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
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MODULE_VERSION(VERSION);
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@ -26,6 +26,9 @@
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int btbcm_check_bdaddr(struct hci_dev *hdev);
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int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
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int btbcm_setup_patchram(struct hci_dev *hdev);
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int btbcm_setup_apple(struct hci_dev *hdev);
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#else
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static inline int btbcm_check_bdaddr(struct hci_dev *hdev)
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@ -38,4 +41,14 @@ static inline int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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return -EOPNOTSUPP;
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}
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static inline int btbcm_setup_patchram(struct hci_dev *hdev)
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{
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return 0;
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}
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static inline int btbcm_setup_apple(struct hci_dev *hdev)
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{
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return 0;
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}
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#endif
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