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authorFrederic Danis <frederic.danis@linux.intel.com>2015-05-28 12:25:04 +0300
committerMarcel Holtmann <marcel@holtmann.org>2015-06-06 08:33:25 +0300
commit75e167e6f0ddcf65567c0a604e4827f0a914a4c1 (patch)
treeebae5dfc21095ce5a39d1ed63236e340ed7db63f /drivers/bluetooth/btbcm.c
parent7721383f4199bb704c664f009423bc228bbac52e (diff)
downloadlinux-75e167e6f0ddcf65567c0a604e4827f0a914a4c1.tar.xz
Bluetooth: btbcm: Add helper functions for UART setup
Firmware loading may reset the controller UART speed and needs to set host UART speed back to init speed. UART drivers setup is split in 3 parts: - btbcm_initialize() resets the controller and returns the firmware name based on controller revision and sub_version. - btbtcm_patchram() (already existing and public), which takes the firmware name as parameter, requests the firmware and loads it to the controller. - btbcm_finalize() which resets the controller, reads local version and checks if the controller address is a default one or not. Remove firmware name retrieval for UART controllers from btbcm_setup_patchram(). Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btbcm.c')
-rw-r--r--drivers/bluetooth/btbcm.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index 14e4647686bd..8e2f6b6251c4 100644
--- a/drivers/bluetooth/btbcm.c
+++ b/drivers/bluetooth/btbcm.c
@@ -246,6 +246,95 @@ static const struct {
{ }
};
+int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
+{
+ u16 subver, rev;
+ const char *hw_name = NULL;
+ struct sk_buff *skb;
+ struct hci_rp_read_local_version *ver;
+ int i, err;
+
+ /* Reset */
+ err = btbcm_reset(hdev);
+ if (err)
+ return err;
+
+ /* Read Local Version Info */
+ skb = btbcm_read_local_version(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ ver = (struct hci_rp_read_local_version *)skb->data;
+ rev = le16_to_cpu(ver->hci_rev);
+ subver = le16_to_cpu(ver->lmp_subver);
+ kfree_skb(skb);
+
+ /* Read Verbose Config Version Info */
+ skb = btbcm_read_verbose_config(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
+ kfree_skb(skb);
+
+ switch ((rev & 0xf000) >> 12) {
+ case 0:
+ case 3:
+ for (i = 0; bcm_uart_subver_table[i].name; i++) {
+ if (subver == bcm_uart_subver_table[i].subver) {
+ hw_name = bcm_uart_subver_table[i].name;
+ break;
+ }
+ }
+
+ snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
+ break;
+ default:
+ return 0;
+ }
+
+ BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
+ hw_name ? : "BCM", (subver & 0x7000) >> 13,
+ (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_initialize);
+
+int btbcm_finalize(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct hci_rp_read_local_version *ver;
+ u16 subver, rev;
+ int err;
+
+ /* Reset */
+ err = btbcm_reset(hdev);
+ if (err)
+ return err;
+
+ /* Read Local Version Info */
+ skb = btbcm_read_local_version(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ ver = (struct hci_rp_read_local_version *)skb->data;
+ rev = le16_to_cpu(ver->hci_rev);
+ subver = le16_to_cpu(ver->lmp_subver);
+ kfree_skb(skb);
+
+ BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
+ (subver & 0x7000) >> 13, (subver & 0x1f00) >> 8,
+ (subver & 0x00ff), rev & 0x0fff);
+
+ btbcm_check_bdaddr(hdev);
+
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_finalize);
+
static const struct {
u16 subver;
const char *name;